JPH0514736Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is an engine-side exhaust pipe portion in which one end protrudes from the middle of the fuselage pipe frame to the outside thereof, and the other end is located inside the fuselage pipe frame. , and an engine exhaust pipe is provided with an exhaust port-side exhaust pipe portion that is entirely or mostly located inside the airframe pipe frame, and the engine-side exhaust pipe portion and the exhaust port-side exhaust pipe portion are fitted together. a first connecting member that connects and connects a portion of the engine-side exhaust pipe portion penetrating the airframe pipe frame with the airframe pipe frame; and an exhaust port-side end portion of the exhaust port-side exhaust pipe portion. The present invention relates to an exhaust structure for an engine of a combine harvester, which is provided with a second connecting member that connects to the fuselage pipe frame.

PRIOR ART

The above-mentioned combine harvester is designed to effectively utilize the fuselage pipe frame as a cover that covers the engine exhaust pipe in order to prevent straw debris from getting entangled in the engine exhaust pipe or accumulating and causing a fire due to exhaust heat. It is something. In addition, insert the engine-side exhaust pipe section through the exhaust pipe through-hole provided in the middle of the fuselage pipe frame, and insert the exhaust port-side exhaust pipe section through the opening at one end of the fuselage pipe frame. The structure is such that an exhaust pipe assembly method can be adopted in which the side exhaust pipe portion and the exhaust port side exhaust pipe portion are fitted and connected.

Conventionally, in this type of combine harvester, as shown in FIG. 8, even if the engine exhaust pipe 10 is made thinner than the fuselage pipe frame 12, the engine side exhaust pipe portion 13 does not penetrate through the fuselage pipe frame 12. a first connecting member 17 that connects the airframe pipe frame 12 to a portion where the exhaust port side is located, and a second connecting member 18 that connects the end of the exhaust port side exhaust pipe portion 14 on the exhaust port 8 side to the airframe pipe frame 12. support the exhaust pipe portion 13 or 14 while ensuring a gap at a set interval between the exhaust pipe portion 13 or 14 and the engine side exhaust pipe portion 13.
By supporting each other at the connection portion, the exhaust port side portion 14 and the exhaust port side portion 14 form a space between the portion of the engine exhaust pipe 10 located within the frame and the fuselage pipe frame 12.
A heat insulating gap 19 for suppressing transfer of exhaust heat to the fuselage pipe frame 12 is ensured over a wide range inside the exhaust pipe frame. This caused the following inconveniences.

[Problem that the invention attempts to solve]

In other words, when assembling the engine exhaust pipe into the airframe pipe frame, both the exhaust port side end of the engine side exhaust pipe portion and the engine side end of the exhaust port side exhaust pipe portion must be attached to the airframe pipe frame. It was difficult to determine the radial position of the exhaust pipe, and it took time and effort to align the ends in order to fit the two exhaust pipe parts together, resulting in poor assembly efficiency in terms of the connection operation between the two exhaust pipe parts.

The purpose of the present invention is to employ the above exhaust pipe assembly method and to modify the exhaust pipe parts so that they can be easily and quickly connected while making it possible to secure the above-mentioned insulation gap over a wide range inside the exhaust pipe frame. There is a particular thing.

[Means for solving problems]

The characteristic configuration of the present invention is that, in the above-mentioned exhaust structure for an engine of a combine harvester, the engine side end of the exhaust port side exhaust pipe portion is positioned at an assembly position in the radial direction of the fuselage pipe frame with respect to the fuselage pipe frame. The member is attached to the engine side end of the exhaust port side exhaust pipe portion in a state where the member is formed so as to contact and act on the inner surface of the aircraft body pipe frame, and its functions and effects are as follows. be.

[Effect]

Due to its shape, the exhaust port side exhaust pipe portion can be inserted into the fuselage pipe frame through its one end opening and assembled, even with the positioning member attached. Therefore, the engine exhaust pipe is compared to the fuselage pipe frame so that there is a gap between the part of the engine exhaust pipe located inside the fuselage pipe frame and the fuselage pipe frame over the entire length of the internal part of the exhaust pipe frame. Even if the exhaust pipe part on the exhaust port side is made thin, if the exhaust pipe part on the exhaust port side is assembled into the fuselage pipe frame and the second connecting member is activated, then the two exhaust pipe parts can be connected. The side end portion is supported by a positioning member and a second connecting member at a set position relative to the frame where it should be assembled and fixed to the fuselage pipe frame, and only the engine side exhaust pipe portion is attached to the fuselage pipe frame. The exhaust port side end of the engine side exhaust pipe portion and the engine side end of the exhaust port side exhaust pipe portion can be adjusted to a matching state for fitting by simply performing an adjustment operation of moving the exhaust pipe portion.

[Effect of idea]

Regardless of the attachment of the positioning member, the exhaust pipe part on the exhaust port side can be inserted into the fuselage pipe frame through the opening at one end, making it possible to adopt the method described above for assembling the engine exhaust pipe into the fuselage pipe frame, which is advantageous for assembling the exhaust pipe. Moreover, by making the engine exhaust pipe smaller than the fuselage pipe frame, the insulation gap between the exhaust pipe and the fuselage pipe frame can be extended over a wide area inside the exhaust chamber frame. This made it possible to effectively prevent the temperature rise of the aircraft's pipe frame. However, the end alignment for connecting the engine-side exhaust pipe section and the exhaust port-side exhaust pipe section is an adjustment operation that moves only the engine-side exhaust pipe section by the action of the positioning member and the second connecting member. This makes it easy and quick to assemble the engine exhaust pipe, making it more efficient in terms of connecting the exhaust pipe part.
Now you can improve your productivity.

〔Example〕

As shown in FIG. 7, a pre-processing section 2 is connected to the threshing section 1, the threshed grain bagging section 3, which raises and reaps planted grain culms as the machine travels, and supplies the reaped grain culms to the threshing section 1. A combine harvester is constructed by installing the engine bonnet 5, which serves as an attachment member for the driver's seat 4, in the front part of a crawler-type traveling aircraft having a driving part and the like.

As shown in FIG. 6, the exhaust structure of the engine 6 is configured such that an exhaust port 8 is located near the rear end of the body frame 7 of the traveling body, and a muffler portion 9 is provided in the middle. An exhaust pipe 10 is connected to an exhaust manifold 11 of the engine 6.
Then, the muffler portion 9 of the engine exhaust pipe 10
As shown in FIGS. 1 and 2, the part located on the more downstream side extends from the middle of the square pipe main frame 12 in the longitudinal direction of the fuselage that constitutes the fuselage frame 7 toward the outer right side of the fuselage. An engine-side exhaust pipe portion 13 that protrudes and is disposed such that the other end thereof is located inside the main frame 12; An exhaust port side exhaust pipe portion 14 is directly connected to the side exhaust pipe portion 13 and is provided with the exhaust port 8, and an exhaust pipe 9a of the muffler portion 9 and the engine side exhaust pipe portion 13 are communicated with each other. The connecting pipe portions 15 are configured to guide and discharge the combustion exhaust gas of the engine 6 to the vicinity of the rear end of the fuselage frame 7, and the exhaust port side portion of the engine exhaust pipe 10 is separated from the wall. It is covered by the main frame 12 to prevent debris from getting entangled or accumulating.

As shown in FIGS. 1 and 3, the engine side exhaust pipe portion 13 and the main A first connecting member 17 made of iron plate welded to each of the frames 12 connects the main frame 12 to a portion of the engine side exhaust pipe portion 13 that penetrates the main frame 12. As shown in the figure, the exhaust port side exhaust pipe portion 14 and the main frame 12 are formed so as to fit onto the rear ends of the fuselage, respectively, and welded to the exhaust port side exhaust pipe portion 14 and the main frame 12, respectively. The exhaust port side end of the exhaust port side exhaust pipe portion 14 and the main frame 12 are connected by a second connecting member 18 made of a bent sheet metal. Then, the end of the exhaust port side exhaust pipe portion 14 is provided with an enlarged diameter connecting portion 14a into which the end of the engine side exhaust pipe portion 13 is fitted, and both exhaust pipe portions 13 and 14 are fitted and connected. The first connecting member 17 and the second connecting member 18
By supporting the exhaust pipe portion 13 or 14 while ensuring a set gap between the exhaust pipe portion 13 or 14 and the main frame 12, each of the portions of the engine exhaust pipe 10 located inside the main frame 12 and the main frame 12 A heat insulating gap 19 for suppressing transfer of exhaust heat to the main frame 12 is provided between the main frame 12 and the main frame 12 over almost the entire area inside the exhaust pipe frame.

A positioning member 20 made of sheet metal is attached to the engine side end of the exhaust port side exhaust pipe portion 14. As shown in FIG. 4, this positioning member 20 is in contact with each of the upwardly facing inner surface and the laterally facing inner surface of the main frame 12 to position the engine side end of the exhaust port side exhaust pipe portion 14 in the main frame radial direction with respect to the main frame 12. It is formed in a shape that follows the inner surface of the main frame so that the engine exhaust pipe 10 is installed in the main frame 12, and the exhaust port side exhaust pipe portion 14 and engine side exhaust pipe portion 13 are This allows easy connection. That is, the exhaust port side exhaust pipe portion 14 is inserted into the main frame 12 from the rear end opening, and the second
After applying the connecting member 18, both exhaust pipe sections 1
By performing the connection operations 3 and 14, the positioning member 20
The engine side end of the exhaust port side exhaust pipe section 14 is supported at a predetermined assembly position with respect to the main frame 12 due to the second connecting member 18, and movement adjustment of only the engine side exhaust pipe section 13 is possible. By simply doing this, the ends of both exhaust pipe sections 13 and 14 can be aligned for connection.

[Another example]

In order to enable the fitting connection of both the exhaust pipe parts 13 and 14, a configuration may be adopted in which the engine side exhaust pipe part 13 is fitted onto the outside.

The present invention can also be applied when the pipe frame used for the exhaust pipe cover is round or horizontally oriented.

The exhaust port side exhaust pipe section 14 may be constructed and implemented so that the entire exhaust pipe portion 14 is located inside the pipe frame 12.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the exhaust structure for a combine engine according to the present invention, and FIG. 1 is a partially cutaway plan view of the interior of the main frame exhaust pipe, and FIG. 2 is a partially cutaway plan view of the interior of the main frame exhaust pipe. 3 is a cross-sectional view taken along the - line in FIG. 1, FIG. 4 is a cross-sectional view taken along the - line in FIG. 1, and FIG. 5 is a view taken along the - line in FIG. The figure is a partially cutaway plan view of the fuselage frame, and FIG. 7 is a side view of the entire combine. FIG. 8 is a partially cutaway plan view of the interior of a conventional exhaust pipe. 10... Engine exhaust pipe, 12... Airframe pipe frame, 13... Engine side exhaust pipe part, 1
4... Exhaust port side exhaust pipe portion, 17... First connecting member, 18... Second connecting member, 20... Positioning member.

Claims (1)

[Scope of utility model registration request] An engine side exhaust pipe portion 13 having one end protruding from the middle of the fuselage pipe frame 12 to the outside and the other end located inside the fuselage pipe frame 12, and an engine side exhaust pipe portion 13 that is entirely or mostly inside the fuselage pipe frame 12. The engine exhaust pipe 10 is provided with an exhaust port side exhaust pipe portion 14 located at
The engine-side exhaust pipe portion 13 and the exhaust port-side exhaust pipe portion 14 are fitted and connected, and the portion of the engine-side exhaust pipe portion 13 penetrating the fuselage pipe frame 12 is connected to the fuselage pipe frame 12. The exhaust structure for a combine engine includes a first connecting member 17 for connecting, and a second connecting member 18 for connecting the exhaust port side end of the exhaust port side exhaust pipe portion 14 and the fuselage pipe frame 12. Then, a positioning member 20 is brought into contact with the inner surface of the fuselage pipe frame 12 for setting the engine side end of the exhaust port side exhaust pipe portion 14 at an assembly position in the fuselage pipe frame radial direction with respect to the fuselage pipe frame 12. An exhaust structure for an engine of a combine harvester, which is attached to the engine side end of the exhaust port side exhaust pipe portion 14 in such a state that it functions as an exhaust pipe.