JP2011051453A - Travelling truck - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a travelling truck having improved workability and safety while maintaining the performance of an engine by efficiently exhausting high-temperature air heated by the engine from an engine room to the outside of the body. <P>SOLUTION: The travelling truck includes right and left travelling devices 7 provided under a body frame 6, a transmission case 8 arranged at the front part of the body between the travelling devices 7, the engine 9 equipped with a muffler 21 and mounted in an engine room frame 24 provided on the body frame 6 above the transmission case 8, a steering part 13 protruded on one side of the engine 9, and a working machine 3 placed on the body frame 6 over the longitudinal direction of the body. Above the engine 9 at the downstream side of a radiator fan 20, the muffler 21 is linked to a tail pipe 23 for exhausting exhaust gas from the engine 9 via the muffler 21 to a position apart from the steering part 13. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention includes a left and right traveling device below the fuselage frame, and a transmission case is disposed between the traveling devices at the front of the fuselage, and in an engine room frame provided on the upper surface of the fuselage frame above the mission case. A self-propelled traveling carriage equipped with an engine equipped with a muffler and having a control unit projecting on one side of the engine and a work machine mounted on the machine frame over the longitudinal direction of the machine. More specifically, the muffler relates to a traveling carriage that is linked to a tail pipe that exhausts exhaust gas of the engine to a position away from the control unit via the muffler above the engine and downstream of the radiator fan.

  Conventionally, a self-propelled traveling cart on which a working machine composed of the harvesting device and the sorting device, which is harvested with a harvesting device and sorted with a sorting device, is harvested with a traveling device. A control unit is projected from one side of the engine installed in the front of the aircraft, and a harvesting device and a sorting device with the same width as the aircraft are placed on the aircraft frame from the front to the rear of the engine. By placing the engine in the center of the left and right width direction of the fuselage and arranging the mission case for driving the traveling device on the front side of the engine, the two weights of the engine and the mission case An object is arranged in the center of the body to improve the left-right balance of the body and improve work safety (for example, Patent Document 1) or a cut leaf stem cut by a leaf stem cutting device Transport to It stems conveyor provided, that reduces the time and labor of the discharge working (Patent Document 2) also.

JP 2001-45820 A JP 2001-78528 A

However, in such a traveling vehicle, a tail pipe for discharging exhaust gas in the engine at a position away from the control unit is simply connected to the muffler of the engine installed in the engine room. A small amount of the air in the engine room heated by the engine is discharged to the outside of the aircraft along the outer periphery of the tailpipe, and along the gaps between installed objects such as pipes around the engine room. Since it was discharged to the outside of the airframe, the high-temperature air in the engine room was not efficiently discharged, the engine cooling efficiency was poor, and the engine performance could be degraded.
Accordingly, an object of the present invention is to provide a traveling carriage that efficiently discharges high-temperature air heated by an engine in an engine room to the outside of the machine, maintains engine performance, and improves workability and safety. Is.

  Therefore, the invention according to claim 1 is provided with a left and right traveling device below the fuselage frame, a transmission case is disposed between the traveling devices and at the front of the fuselage, and the aircraft above the transmission case. An engine equipped with a muffler is mounted in an engine room frame provided on the frame, and a control unit is projected from one side of the engine, and a work machine is mounted on the machine frame over the longitudinal direction of the machine body. In the mounted self-propelled traveling carriage, the muffler discharges the exhaust gas of the engine to a position away from the control unit via the muffler above the engine and downstream of the radiator fan. It is characterized by being linked to a tail pipe.

  According to a second aspect of the present invention, in the traveling vehicle according to the first aspect, the tail pipe is supported by the engine room frame.

  According to a third aspect of the present invention, in the traveling vehicle according to the first aspect, one end of the tail pipe located at the exhaust port of the muffler is formed in an expanded shape.

  According to a fourth aspect of the present invention, in the traveling carriage according to the first aspect, a guide blade for rectifying the sucked air is provided in the tail pipe from the one end portion toward the middle portion. And

  According to the first aspect of the present invention, the left and right traveling devices are provided below the fuselage frame, the transmission case is disposed between the traveling devices at the front of the fuselage, and provided on the fuselage frame above the transmission case. An engine with a muffler is installed in the engine room frame, and a control unit is provided on one side of the engine, and a working machine is mounted on the aircraft frame in the longitudinal direction of the aircraft. In a traveling vehicle, the muffler is linked to a tail pipe that exhausts engine exhaust gas away from the control unit via the muffler above the engine and downstream of the radiator fan. The high-temperature air heated by the engine is guided by a radiator fan to the link with the exhaust pipe of the muffler. Since is removed by suction into the tail pipe by the exhaust pressure of the exhaust gas from Luo muffler, it is possible to cool the engine efficiently. Therefore, it is possible to provide a traveling cart with improved workability and safety.

  According to the invention described in claim 2, since the tail pipe is supported by the engine room frame, the tail pipe can prevent damage due to vibration of the engine. Therefore, it is possible to provide a traveling carriage with improved maintainability.

  According to the invention of claim 3, since the one end portion of the tail pipe located at the exhaust port of the muffler is formed in an expanded shape, the amount of air taken in from the tail pipe end portion can be increased, High-temperature air in the engine room can be sucked and removed quickly and in large quantities, and the engine can be cooled more efficiently. Therefore, it is possible to provide a traveling cart with improved workability and safety.

  According to the fourth aspect of the present invention, the guide pipe for rectifying the sucked air is provided in the tail pipe from one end portion toward the middle portion. The rectified and sucked air is sucked into the tail pipe, and the sucked air can be smoothly discharged out of the machine, so that the engine can be cooled more efficiently. Therefore, it is possible to provide a traveling cart with improved workability and safety.

It is a side view of an onion harvester as an example including the traveling cart of the present invention. It is a left view of the traveling trolley | bogie of this invention. It is a perspective view of a traveling cart. It is a top view of a traveling cart. It is a perspective view of the tail pipe vicinity linked to a muffler. It is a cross-sectional schematic diagram in the vicinity of the tail pipe linked to the muffler, showing the flow of airflow in the engine room. It is a cross-sectional schematic diagram in the vicinity of the tail pipe that is linked to the muffler and that has one end portion expanded, showing the flow of airflow in the engine room. It is a perspective view of the tail pipe one end part which shows the guide blade attached in the tail pipe.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
FIG. 1: shows the right view of the onion harvester as an example containing the traveling trolley | bogie of this invention. The onion harvester 1 in this example is a riding-type work vehicle in which a digging device 3a, a transport device 3b, a sorting device 3c, and the like are placed on a traveling carriage 2 as a work machine 3.

  The traveling carriage 2 at the lower part of the machine body includes a crawler-type left and right traveling device 7 below the body frame 6, and a transmission case 8 is disposed in the front part of the aircraft between the left and right traveling devices 7. An engine 9 is mounted on the upper surface of the body frame 6. On one side of the engine 9, a steering unit 13 including a steering handle 10, a driver's seat 11, an elevating step 12, and the like is provided to protrude sideways.

  Further, a digging device 3a that is substantially equal to the body width is disposed on the traveling carriage 2 from the front to the top of the engine 9, and the crops such as onions that have been dug by the digging device 3a are directed upward. The lifting and lowering conveying device 3b is connected to the rear of the digging device 3a, and the size and quality of the rear side of the conveying device 3b are transferred to the rear of the machine body after being transferred by the conveying device 3b. A sorting device 3c that sorts and the like is installed.

  In addition, the code | symbol 3d is a scraping apparatus interposed between the digging apparatus 3a and the conveying apparatus 3b. Reference numerals 15, 16, and 17 are receiving boxes for loading onions selected according to size or product type.

  Next, the engine of the traveling carriage, which is a feature of the present invention, will be described in detail. 2 is a left side view of the traveling carriage of the present invention, FIG. 3 is a perspective view of the traveling carriage, FIG. 4 is a plan view of the traveling carriage, FIG. 5 is a perspective view of the vicinity of the tail pipe linked to the muffler, and FIG. It is a cross-sectional schematic diagram of the tail pipe vicinity linked with a muffler which shows the flow of an internal airflow.

  First, as shown in FIGS. 2 to 4, the engine 9 is placed on the body frame 6 above the mission case 8 at the front center of the traveling carriage 2 at the approximate center in the left-right width direction of the body. The engine room 18 is installed in the engine room frame 24.

  A radiator 19 is disposed between the engine 9 and the control unit 13, and a radiator fan 20 is installed on the side of the radiator 19 on the engine 9 side. The engine 9 is cooled by introducing the outside air sucked through the radiator 19 into the engine room 18.

  A muffler 21 is fixedly installed on the engine room frame 24 above the engine 9, and one end 23 a of a tail pipe 23 is linked to an exhaust port 22 protruding from an appropriate position of the muffler 21. At the same time, the tail pipe 23 is extended until the other end 23b of the tail pipe 23 is positioned on the side surface opposite to the control unit 13. Therefore, the exhaust gas of the engine 9 is discharged into the atmosphere from the muffler 21 via the tail pipe 23 at a position away from the operator of the control unit 13.

  The present invention is characterized by the tail pipe 23. That is, as shown in FIG. 5, one end 23 a of the tail pipe 23 is installed in an open state so as to cover the periphery of the exhaust port 22 of the muffler 21. That is, the linkage portion C is provided so as to cover the exhaust port 22 of the muffler 21 without joining the one end portion 23a of the tail pipe 23.

  Further, the middle portion of the tail pipe 23 in the vicinity of the one end portion 23a of the tail pipe 23 is fixed to the engine room frame 24 with a fixture or the like. The other midway part of the tail pipe 23 is appropriately fixed to a machine frame 25 provided on the traveling carriage 2.

  As shown in FIG. 6, the exhaust gas generated in the engine 9 is introduced from the muffler 21 through the exhaust port 22 into the one end portion 23 a of the tail pipe 23 through the exhaust port 22, and passes through the tail pipe 23. Discharged outside.

  On the other hand, the high-temperature air around the engine 9 heated by the drive of the engine 9 in the engine room 18 is linked to the one end portion 23a of the tail pipe 23 by the suction pressure of the exhaust gas discharged from the muffler 21 to the tail pipe 23. The air is sucked into the tail pipe 23 from the part C, passes through the tail pipe 23, and is discharged from the other end 23b of the tail pipe 23 together with the exhaust gas.

  With such a configuration, the high-temperature air around the engine 9 in the engine room 18 and heated by the driving of the engine 9 is guided to the linkage C with the tail pipe 23 of the muffler 21 by the radiator fan 20. Since the exhaust gas is sucked into and removed from the tail pipe 23 by the exhaust pressure of the exhaust gas, the engine 9 can be efficiently cooled.

  Further, since the tail pipe 23 is supported by the engine room frame 24, the tail pipe 23 is not directly subjected to the vibration of the engine 9, so that the tail pipe 23 can be prevented from being damaged.

  The shape of the one end portion 23a of the tail pipe 23 can further promote the discharge of high-temperature air in the engine room 18. FIG. 7 is a schematic cross-sectional view of the vicinity of the tail pipe, which is linked to the muffler and has one end portion expanded, showing the flow of airflow in the engine room.

  As shown in FIG. 7, the peripheral shape of the one end portion 23a of the tail pipe 23 is an expanded shape E directed outward. Accordingly, since the opening area A between the one end portion 23a of the tail pipe 23, which is the linkage portion C, and the exhaust port 22 of the muffler 21, is widened, high-temperature air in the engine room 18 can be quickly and aspirated and removed. The engine 9 can be cooled more efficiently.

  Further, the hot air sucked into the tail pipe 23 can be rectified and discharged smoothly. FIG. 8 is a perspective view of one end portion of the tail pipe showing guide vanes attached in the tail pipe.

  As shown in FIG. 8, a plurality of guide blades 26 having an appropriate length along the inner peripheral edge in the vicinity of the suction port, which are linked portions C of the one end portion 23a of the tail pipe 23, are attached at appropriate intervals. It is done. In the present embodiment, the four guide blades 26 are provided at intervals of 90 degrees along the inner peripheral edge of the one end portion 23a, but may be three or less or five or more.

  In addition, each guide blade 26 may have a structure in which the vertical height is gradually increased toward the middle part of the tail pipe 23 in order to secure an opening area that is an inlet port of the one end portion 23a of the tail pipe 23. preferable. The installation of the guide blade 26 is applied regardless of whether or not the one end portion 23a of the tail pipe 23 is expanded.

  Accordingly, the high-temperature air from the engine room 18 sucked into the tail pipe 23 from the linkage portion C is secured to the suction direction and the suction passage by the guide blades 26, so that the suction port of the one end portion 23a of the tail pipe 23 is secured. , The collision and turbulent flow of the hot air can be reduced, the hot air can be rectified and taken into the tail pipe 23, and the hot air in the engine room 18 can be sucked and removed smoothly and quickly.

  With such a configuration, the hot air in the engine room 18 is rectified and sucked into the tail pipe 23 by the guide blades 26, and the sucked air can be smoothly discharged to the outside of the machine to cool the engine 9 more efficiently. Can do.

  As described above in detail, the traveling carriage 2 of this example includes the left and right traveling devices 7 below the body frame 6, and the transmission case 7 is disposed between the traveling devices 7 and in the front of the body. 8 An engine 9 having a muffler 21 is mounted in an engine room frame 24 provided on the upper body frame 6, and a control unit 13 is provided on one side of the engine 9 so as to extend in the front-rear direction of the body. The working machine 3 is placed on the machine body frame 6, and the muffler 21 is located above the engine 9 and on the downstream side of the radiator fan 20 so that the exhaust gas of the engine 9 is separated from the control unit 13 via the muffler 21. It is linked to the tail pipe 23 to be discharged.

  In addition, the tail pipe 23 is supported by the engine room frame 24, and one end 23 a of the tail pipe 23 located at the exhaust port 22 of the muffler 21 is formed in an expanded shape E. A guide blade 26 that rectifies the sucked air is provided from the one end portion 23a toward the midway portion.

  In the above description, an onion harvesting machine has been described as an example of a traveling cart. However, the present invention is not limited to this, and a harvesting machine for vegetables such as bulbous vegetables and fruits and a fruit harvesting machine can be placed. The present invention can be applied to any riding type traveling cart that can run.

2 traveling carriage 6 machine frame 9 engine 18 engine room 20 radiator fan 21 muffler 22 exhaust port 23 tail pipe 23a one end 24 engine room frame 26 guide vane A opening area C linkage part E widened shape

Claims (4)

With left and right traveling devices below the fuselage frame,
Between the traveling devices, a mission case is disposed at the front of the aircraft,
In the engine room frame provided on the fuselage frame above the mission case, an engine equipped with a muffler is mounted,
In the riding self-propelled traveling carriage in which a control unit is protruded on one side of the engine, and a work machine is placed on the body frame over the longitudinal direction of the body,
The muffler is linked to a tail pipe that exhausts exhaust gas of the engine to a position away from the control unit via the muffler above the engine and downstream of a radiator fan. .   The traveling chassis according to claim 1, wherein the tail pipe is supported by the engine room frame.   2. The traveling chassis according to claim 1, wherein one end of the tail pipe located at an exhaust port of the muffler is formed in an expanded shape.   4. The traveling chassis according to claim 1, wherein guide tails for rectifying the sucked air are provided inside the tail pipe from the one end portion toward the middle portion. 5.

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