JPS5819299Y2 - Dust prevention device for radiator in engine - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a dust prevention device for a radiator in an engine.

For example, in the engine mounted on an agricultural tractor, a dustproof net is attached to the front of the radiator to prevent the core from clogging.

This dustproof net can be attached to and removed from the radiator by inserting and removing it to facilitate cleaning.

However, in this case, since the dustproof net in the inserted state is not fixed to the fixed frame or the like in any way, the net becomes loose, causing the following problems.

That is, when dust adheres to the dustproof net, the surface of the net bends in an arcuate shape due to the suction pressure of the radiator fan.

On the other hand, the shape-retaining frame that holds the net causes the net to vibrate back and forth with vibrations from the engine and the aircraft body.

・As a result, the attachment base of the net to the shape-retaining frame was subjected to repeated impacts, causing problems such as early fatigue failure.

In addition, when removing a dusty net, the net hits the bonnet or engine exterior parts, etc., and the dust on the net surface scatters and falls on the engine exterior and air cleaner, etc., which requires extra effort to remove. There was something I needed to do.

In order to solve the above-mentioned drawbacks, this invention makes it possible to fix the dustproof net to the fixed frame by friction, and also provides a rotating dust removal brush in the insertion/extraction opening of the net, so that dust can be removed by inserting and removing the dustproof net. It is characterized by the following points.

Examples of this invention will be described below with reference to the drawings.

FIG. 1 is a partially cutaway front view of an agricultural tractor. This tractor 1 has an engine 3 and a front wheel bracket 4 fixed in this order to the front of a transmission case 2, and a radiator 5 and a battery 6 mounted on the front wheel bracket 4. At the same time, an air cleaner 7 is arranged in front of the air intake surface of the radiator 5, and the outer surfaces of these are covered with a bonnet 8.

Reference numeral 9 denotes a dustproof device attached to the air suction surface side of the radiator 5, which consists of a fixed frame 10, a dustproof net 11, and a dust removal brush 12, as shown in FIGS. 2 and 3.

The fixed frame 10 includes an opening 13 provided to surround a portion of the core C of the radiator 5, a frame portion 14 having a U-shaped cross section provided on both left and right sides of this opening 13, and an upper plate surface of the opening 13 extending. It consists of a hot air source closing part 15 provided at

This fixed frame 10 is fixed to the side surface of the radiator 5 with screws.

The frame portion 14 is formed in an inclined shape so that its horizontal width becomes narrower toward the bottom.

The dustproof net 11 is constructed by stretching a net 17 over a rectangular shape-retaining frame 16, and the left and right frame portions of the shape-retaining frame 16 are formed with an inclination that coincides with the frame portion 14 described above.

This dustproof net 11 is inserted into the frame part 14 of the fixed frame 10 from above, and in the inserted state, the outer surface of the shape-retaining frame 16 and the frame part 1
By bringing the net 11 into close contact with the inner surface of the net 4, the net 11 is fixed by friction.

The dust removal brush 12 has a cylindrical shape as a whole, and its both ends are pivoted to the fixed frame 10, and a driven rubber roller 22 is fixed to one of the pivot shafts 21. An intermediate rubber roller 23 is provided, and when the dustproof net 11 is pulled upward, the dust removal brush 12 rotates in the opposite direction to the net removal direction, and the dust attached to the net 17 is actively brushed off.

In the figure, 18 is a radiator fan, 19 is a dustproof net 1
This is a handle for insertion/extraction operation that is fixed to the top of 1.

If the dustproof net 11 becomes clogged, pull up the bonnet 8 to open the top surface of the radiator 5 as shown by the imaginary line in Figure 1, and then fix the dustproof net 11 as shown by the imaginary line in the figure. This dustproof net 11 is removed from the frame 10 and dust attached to the net 17 is removed by washing with water or the like.
During the removal operation, most of the coarse dust adhering to the net 17 is brushed off by the dust removing brush 12, so the above cleaning work is facilitated, and the adhering dust does not scatter to the engine 3, air cleaner 7, etc. during removal. is resolved.

After cleaning, the dustproof net 11 is attached to the frame portion 14 of the fixed frame 10 again.
will be installed on the

At this time, since the shape-retaining frame 16 is inserted into the frame portion 14 in a wedge-like manner, the frictional force due to the close contact between the two members 14 and 16 and the shape-retaining frame 16
Due to the slight elastic deformation, the dustproof net 11 is reliably fixed to the fixed frame 10 without wobbling.

Figures 4A and 4B show modified embodiments, respectively.
In the configuration shown in FIG. A, leaf springs 20 are attached to four locations on the front side of the shape-retaining frame 16 of the dustproof net 11, and the inserted dustproof net 11 is pressed and held against the frame 14 by the elastic force of the leaf springs 20. ,
This prevents rattling, and the one shown in FIG. The elasticity of the frame 16 itself prevents rattling.

As described above, in this invention, the dustproof net 11 that covers the air intake surface of the radiator 5 and is inserted into the fixed frame 10,
Since it is frictionally fixed to the fixed frame 10 by pressure welding, the dustproof net 11 can be easily attached and removed by simply inserting and removing it, preventing the dustproof net 11 from rattling during use, and eliminating the occurrence of abnormal noise. Problems such as fatigue failure of the attachment base of the net 17 to the shape-retaining frame 16 can be eliminated.

In addition, since the dust removal brush 12 attached to the fixed frame 10 comes into sliding contact with the net 17 surface of the dustproof net 11 during insertion and removal, most of the dust attached to the net 17 is removed by the dustproof net 11.
It can be removed by inserting and removing it, making cleaning work after removal simple or unnecessary.

Furthermore, in this case, the dust removal brush 12 is rotated in the opposite direction to the direction of insertion and removal of the dust protection net 11 when the dust protection net 11 is inserted and removed, so that the wiping force of the dust removal brush 12 is large and the cleaning effect can be enhanced.

Furthermore, when the dustproof net 11 is removed from the fixed frame 10, the large amount of dust has already been removed, so that the attached dust will not be scattered to the engine 2, the air cleaner 7, etc. while carrying it outside the engine 3. Most of it disappears.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of a tractor showing an embodiment of this invention, Fig. 2 is a sectional view taken along line II-II in Fig. 1, Fig. 3 is an enlarged front view of the main parts, and Fig. 4 A and B are FIG. 7 is a perspective view showing a modified example of the seat protection device. 3... Engine, 5... Radiator,
9... Dustproof device, 10... Fixed frame, 1
1... Dustproof net, 12... Dust removal brush, 14... Frame, 16... Shape retaining frame,
17...Net.

Claims (1)

[Scope of utility model registration request] A fixed frame 10 for holding a dustproof net 11 is provided on the air intake surface side of the radiator 5.
1 in a freely insertable and removable manner, and in this inserted state, the dustproof net 11
is frictionally fixed to the fixed frame 10 by pressure welding, and the fixed frame 1
A rotary dust removal brush 12 that slides into contact with the dust protection net 11 during insertion/extraction is attached to the part near the insertion/extraction opening for the dust protection net 11 of No. A dustproof device for a radiator in an engine, characterized in that the dust removal brush 12 is connected in an interlocking manner so that when a dustproof net 11 is inserted or removed, a dust removal brush 12 is rotated in a direction opposite to the direction in which the net is inserted or removed.