JPS6229620Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dust removal device for an agricultural engine such as a self-propelled threshing machine and a dust prevention device.

Conventionally, dust, straw, etc. adhering to the air intake net attached to the radiator intake port of a self-propelled threshing machine were removed with a brush, etc., and two air intake ports with dustproof mesh were formed in the ventilation duct. Some devices are equipped with a mechanism for switching the air intake path so that it is possible to select whether the air is inhaled through the air intake port or not. (Utility Model Application No. 50-122530) However, even if one tries to remove dust, straw, etc. with a brush or the like while the cooling fan is still operating, it is difficult to remove the dust and straw. In addition, negative pressure detectors must be used in dusty areas, which can cause problems such as not responding accurately due to dust adhesion, and the cooling function of the engine may be impaired, resulting in overheating and engine damage or destruction. was causing

The present invention was made in consideration of the above-mentioned situation, and aims to improve and innovate the engine cooling system to eliminate clogging of the intake network and prevent the engine from overheating.

The present invention will be explained below based on the illustrated embodiments. Fig. 1 is a schematic side sectional view of a self-propelled threshing machine;
3 and 3 are plan sectional explanatory views of the main part showing a conventional example, and FIGS. 4 and 5 are partially cutaway side sectional views of the main part showing an embodiment of the present invention.

In the figure, reference numeral 1 denotes a self-propelled threshing machine, which consists of a threshing section 2, a running section 3, an engine section 4, etc. A radiator 6 and a cooling fan 7 for cooling the engine are installed in the engine section 4. The radiator 6 communicates with an intake port 9 through an intake air passage 8, and an intake network 5 is stretched over the intake port 9. Therefore, a partition plate 10 is provided to equally divide the intake port 9 and the intake network 5 into two parts of different sizes. The partition plate 10 is extended to the intake air passage 8, and a large-area portion of the intake network 5 is connected to the divided route between the engine cooling intake port 9 and the intake air passage 8, which are divided into two by the partition plate. A shutter 11 is provided on the route, and the shutter 11 and the traveling clutch lever 12 are connected to each other.
The shutter 11 closes the air passage against the spring 13 when the travel clutch lever 12 is engaged, and the shutter 11 opens the air passage when the travel clutch lever 12 is disengaged. . Further, a shutter 11' is provided on a path leading to the small area portion of the air intake network 5, which can be opened and closed at any time by manual operation.

Since the present invention is constructed as described above, the engine section 4
When the threshing section 2 is operated at the start of the threshing operation, dust, straw, etc. discharged during the threshing operation adhere to the air intake net 5 and cause clogging. However, self-propelled threshing machines do not work while moving, and because the machine is stopped to perform threshing work, we focused on the fact that the load on the engine is small while moving. The intake air passage 8 is divided into two as shown in the embodiment in FIG. 5 by tilting the traveling clutch lever 12 toward the traveling side during load.
When the shutter 11 is operated to close one side of the air intake system, the flow of air as shown by the arrow in FIG. Suction from the part is stopped. Therefore, dust, straw, etc. adhering to the divided large-area portions of the intake net 5 naturally fall due to their own weight on the side where suction is stopped. At this time, since the engine section 4 is in operation, various parts are subjected to vibrations. This vibration serves to shake off dust and the like adhering to the intake net 5 from the intake net. As a result, the shutter 11 as shown in FIG.
Dust, straw, etc. adhering to the intake net on the suction stop side are removed. When the aircraft has finished moving and the traveling clutch lever 12 is returned to the OFF state, the shutter 11 is interlocked and the divided large area portion of the air intake network 5 is opened again. Threshing work can now begin.

Further, the shutter 11' is open when the vehicle is running, but there is no dust while the vehicle is running, so it may be open all the time. However, if it is left open during work, dust may adhere to the small divided area of the intake screen 5. Therefore, if it is closed during the threshing operation, the dust can fall off, and the work equipment can be moved immediately when the threshing operation is finished.
Furthermore, in the present invention, the shutter 11' that communicates with the small divided area of the intake net 5 can be opened and closed at any time by manual operation, so that in the unlikely event that the large divided area of the intake net 5 becomes clogged during the threshing operation. sometimes shutter 1
By opening 1', a small area can be used as an auxiliary air intake network, and work can be continued without interruption.

According to the present invention, a partition plate is provided to evenly divide the intake port into unequal sizes of the intake network, and a shutter is installed in the divided path such as the intake air path divided by the partition plate. The closing action of the shutter reduces the suction force to zero, allowing straw, etc. to fall naturally, and the engine vibration shakes off dust, straw, etc. adhering to the intake screen, eliminating clogging of the intake screen. In such a machine, the shutter that opens and closes the path leading to the divided large-area part of the intake network is linked to the operation of the travel clutch lever of the self-propelled threshing machine, so that the shutter is closed when the machine is running and opened when it is stopped. In addition to this structure, a shutter that can be switched open and closed at any time by manual operation is installed in the path of the divided small area part of the intake network, so it exhibits the above-mentioned effect and is very convenient because it allows for efficient engine cooling. . Furthermore, the present invention can be applied to engines used in places where dust is generated, so it can be expected to have a wide range of applications. Also, here we have explained using a water-cooled engine as an example.
Of course, the same effects can be obtained with an air-cooled engine.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and Fig. 1 is a schematic side sectional view of a self-propelled threshing machine, Figs. 2 and 3 are plan sectional explanatory views of main parts showing a conventional example, and Figs. 4 and 5. 1 is a partially cutaway side sectional view of an embodiment of the present invention; FIG. In the figure, 1... self-propelled threshing machine, 2... threshing section, 3
...Traveling part, 4...Engine part, 5...Intake network,
6...Radiator, 7...Cooling fan, 8...
Intake air path, 9... Intake port, 10... Partition plate, 1
1, 11'...Shutter, 12...Travel clutch lever, 13...Spring, 14...Shutter operating rod, 15...Shutter connection wire.

Claims (1)

[Scope of utility model registration request] In the engine section of a self-propelled threshing machine equipped with an engine cooling system in which an air intake network is stretched over the air intake port for cooling the engine, and the air intake port is connected to a cooling fan through an intake air path, the air intake port is evenly spaced. A partition plate is provided to divide the intake network into two unequal sizes, and a shutter is provided in the dividing path between the intake port and the intake air path, which is divided by the partition plate, and the shutter, which leads to the large area of the divided intake network, can be opened and closed. A dust-proofing device for a self-propelled threshing machine characterized in that a shutter connected to a travel clutch lever and connected to a divided small-area portion of an intake network is manually operated.