JPS599933Y2 - Backhoe exhaust structure - Google Patents

Description

[Detailed description of the invention] This invention relates to an exhaust structure for a backhoe.

Conventionally, in the exhaust structure of a power working machine, an exhaust guide tube is connected to the muffler connected to the engine part of the power working machine, and the tip of the exhaust guide tube is opened on the bonnet to perform noise reduction and exhaust. Because the exhaust guide tube protruded from the muffler and opened vertically onto the bonnet, it had poor sound deadening and heat dissipation effects.

This invention aims to provide an exhaust structure for a backhoe that can efficiently achieve sound muffling and heat dissipation effects by freely distributing the exhaust guide tube for the required length in a rudder pattern without opening it vertically from the muffler onto the bonnet. It is.

A detailed explanation of the embodiment of this invention based on the drawings shows that A is a power working machine, and a crawler track is provided on the traveling machine body 1, and a swivel base 2 is mounted on the traveling machine body 1 so as to be able to rotate freely. A backhoe main body 3, a control cabin 4, and an engine section 5 are sequentially provided on the swivel table from the front.

The engine section 5 is covered by a bonnet 6, and a muffler 7 connected to the engine section 5 is provided within the bonnet 6, and is configured to pass the exhaust gas from the engine section 5 and muffle the noise.

The positional relationship between the muffler 7 and the engine section 5 is such that the engine section 5 is located on the side of the aircraft, and the muffler 7 is arranged horizontally side by side with the engine section 5. A muffler communication pipe 8 protrudes laterally, and the muffler 7
It is connected to the rear end of the.

An exhaust guide tube 9 is connected to the front end of the muffler 7, and the exhaust guide tube 9 protrudes forward from the front end of the muffler 7.
It turns 0 degrees and extends rearward, facing rearward above the muffler 7, rises vertically above the bonnet 6 at the rear of the muffler 7, and opens to the outside of the bonnet.

The tip of the exhaust guide tube 9 opens onto the bonnet 6 as described above, and the opening 10 communicates with the cap 11 attached to the bonnet 6-1.

The cap 11 has its upper end opened toward the rear of the fuselage, and is configured to prevent exhaust from the exhaust guide tube 9 from being discharged toward the cabin 4.

According to this invention, since the exhaust guide tube is loosely arranged from the muffler to the required length in the rudder pattern, the exhaust from the engine reaches the muffler and is routed to the muffler in the rear rudder pattern, where it is partially muffled. In this case, the exhaust passage caused by the muffler's steering is long, and the noise is silenced that much more efficiently, and additional heat is radiated from the muffler's peripheral wall while the muffler is being routed through the steering, so the conventional exhaust guide pipe is not used. Compared to the exhaust gas that is passed through the air, it has excellent noise reduction and heat dissipation effects.

Furthermore, the muffler is arranged horizontally in parallel with the engine section, making it possible to make direct use of the space inside the engine. is bent and extended as far back as possible from the cabin to release noise to a rear position as far as possible from the cabin, and
Since the top opening of the exhaust guide tube is located at the base end of the cap, the cap part does not interfere with the exhaust guide tube when the bonnet is opened or closed, and the cabin and bonnet, which are unique to the Batshoe, are This has the effect of preventing noise and making work easier by considering the positional relationship between the two.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the proposed structure of the backhoe, Fig. 2 is a partially cutaway plan view of the main parts, and Fig. 3 is Fig. 2 I-I.
A cross-sectional side view of the line. A: Backhoe, 1: Running body, 2: Swivel base, 3: Backhoe body, 4: Cabin, 5: Engine section, 6: Bonnet, 7: Muffler 8: Muffler communication pipe, 9:
Exhaust guide tube, 10: opening, 11: cap.

Claims (1)

[Scope of utility model registration request] In the exhaust structure of the Batsukuho, a muffler is connected to the engine section located at the rear of the cabin, and the tip of the exhaust guide tube connected to the muffler is opened on the bonnet.
The muffler is placed on the side of the engine, and the exhaust guide tube does not open vertically from the muffler onto the bonnet, but instead protrudes forward from the front end of the muffler and is bent directly upward into a U-shape. Then, extend the area just above the muffler to the rear, and install it vertically on the bonnet upward from the rear of the muffler, and bend and extend the exhaust guide tube as far back as possible from the cabin to the outside of the bonnet. Furthermore, at the bonnet position of the opening, a cap with a bent shape diagonally upward facing toward the rear of the cabin is installed in communication with the opening, and an exhaust guide tube is installed at the base end of the cap. A backhoe exhaust structure characterized by having an upper end opening positioned.