JPH0241500Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention effectively prevents radiators from being clogged with dust, leaves, dirt, and other foreign matter during operation of bulldozers and other tractors. This invention relates to a radiator for a tractor.

<Prior art> In order to improve the cooling efficiency of the radiator, between the lower wall of the oblong upper tank and the upper wall of the lower tank,
A tractor radiator having a plurality of pairs of cores arranged in a V-shape is known from Japanese Patent Laid-Open No. 52-47150.

This increases the number of cores that can be arranged between the upper and lower tanks than when the cores are arranged parallel to the longitudinal direction of the upper and lower tanks, improving cooling efficiency.

<Problems to be solved by the invention> In general, bulldozers and other tractors often work in adverse environments with a lot of garbage and other foreign matter.

Therefore, in order to cool the engine cooling water in the radiator, a large amount of these impurities are mixed into the air taken in when the fan rotates, and although large particles are separated by the radiator grill, they still pass through the grill and enter the radiator. A large amount of fine contaminants fly in with the air, and these collect at the bottom of the V in the V-shaped core of the radiator and gradually become clogged, obstructing the flow of air between the fins and reducing cooling efficiency. There is a risk of lowering the engine speed and overheating the engine.

<Means for Solving the Problem> Therefore, the present invention maintains a distance between the ends forming the bottom of the V-shape of all the pairs of cores, and at least one of the cores of all the pairs has the same diagonal direction. The cores are pivotably connected to the upper tank and the lower tank, respectively, and are connected to a series of movably adjustable connecting members, so that the width of the gap can be adjusted.

<Function> By operating the above-mentioned connecting member, the diagonal angle of one of the cores of all the pairs changes simultaneously, and the distance between the ends forming the V-shaped bottom of the pair of cores is adjusted to allow dust, etc. to blow through. It can be adjusted according to the garbage generation situation in the work environment.

<Embodiment> In the illustrated embodiment, 1 and 2 are an oblong upper tank and a lower tank, and as is well known, the upper tank 1 has an inlet pipe 1' for cooling water heated by cooling the engine; The lower tank 2 has an outlet pipe 2' for supplying cooling water to the engine for cooling the engine.

Between both tanks 1 and 2, a large number of pairs of cores 3a and 3b arranged in a V-shape are provided in the lateral direction. Each one of the cores has elongated upper and lower headers 4 and 5, and upper and lower ends of the headers are inserted into the upper and lower headers 4 and 5 and fixed in parallel with each other at a distance in the longitudinal direction of the headers. It is equipped with a large number of 6 groups of thin tubes and 7 groups of fins installed around the 6 groups of thin tubes with a slight gap in the vertical direction. It has a cylindrical conduit 8 that is coaxial in the direction. Each of the upward and downward conduits 8 enters rotatably through a seal 10 into holes 9 provided in the lower wall of the upper tank and the upper wall of the lower tank in the same arrangement with a predetermined distance maintained. and open into each tank.

Therefore, the coolant that has been heated by cooling the engine enters the upper tank 1 from the inlet pipe 1', and from there it is divided into the header 4 above each pair of cores, and then from the upper header 4 to one group. As it flows down through the thin tube 6..., the fan 11 exchanges heat with the air being discharged or taken in, and while being cooled, it passes through the lower header 5, merges into the lower tank 2, and exits to cool the engine. It is supplied and circulated through the engine jacket through pipe 2'. Note that the fan 11 is connected to each pair of cores 3.
They may be provided oppositely on the obliquely opposing ends 3', 3' of a, 3b to exhaust or suck air, or conversely, the ends 3'', 3'' that open outward may be provided oppositely. It may also be provided opposite to the windshield to exhaust or suck in air.

The arrangement of each pair of cores in a V-shape rather than in rows increases the number of cores to which the fan 11 blows or sucks air, thereby increasing the number of cores exposed to the airflow by the same fan 1.
This is to increase the amount of cooling water that can be cooled by 1, thereby increasing the cooling efficiency of the engine. To this end, the obliquely opposing ends 3', 3' of each pair of cores 3a, 3b are brought close to each other. At the same time, in terms of cooling efficiency, it is most preferable to arrange the outwardly open ends 3', 3' of adjacent pairs of cores close to each other, so as to form an arrangement similar to that of an expanded folding screen. However, as mentioned above, when this is done, contaminants such as dust mixed in the air gather in the V-shaped part of the core and cause clogging, impeding air flow and reducing cooling efficiency. I will let you do it.

Therefore, the present invention maintains a gap between the ends 3' and 3' forming the bottom of the V-shape of all pairs of cores as shown in Figure 2, and when working in an environment where a lot of dust is generated, the width of the gap is At the same time, the space between the ends 3'' and 3'' of the adjacent pair of cores is also widened, so that a large amount of foreign matter mixed in the air can be blown through this space, and the generation of dust is also prevented. When working in a small environment, the spacing was narrowed to increase cooling efficiency, and the spacing between all pairs of cores could be adjusted at the same time by operating a series of connecting members.

For this reason, in the embodiment of FIGS. 1-3, all left-hand cores 3a of all pairs of cores are connected to a series of rods 1.
2, and all of the right-hand core 3b is connected to another series of rods 13, both rods 12, 1
The ends of the rods 3 are passed through the side wall 14 of the engine compartment and protrude outside, and each rod is fixed inside and outside the side wall by tightening nuts 15 and 16, respectively.

Therefore, to rotate the entire core on the left or right side by pulling the rod 12 or 13 outward, loosen the inner nut 15, pull it outward, and then tighten both nuts again. Also, to push it in and rotate it, loosen the nut on the outside 16, and then tighten both nuts.

As a result, the ends 3' of each pair of cores 3a, 3b,
3' and the distance between the ends 3'', 3'' of the adjacent pair of cores can be adjusted depending on the dust generation situation in the working environment, so that foreign matter that causes clogging can be blown through.

In addition, in the embodiment shown in FIG. 4, each pair of left and right cores 3
An extension piece 17 is provided at the end 3' of the upper or lower head of a, 3b, and a rotatable short shaft 18 is placed in the upper or lower end of the extension piece 17, so that the left and right cores of each pair are fixed. A series of turnbuckles 19 are threadedly connected to the short axis of the .

Therefore, by rotating the turnbuckle 19 in one direction, all pairs of left and right cores 3a, 3
b in opposite directions, and the pair of cores 3a, 3b
The distance between the ends 3', 3' of the core and the distance between the ends 3'', 3'' of the adjacent pair of cores can be optimally adjusted according to the working environment.

The present invention has been described above with reference to an embodiment in which two cores forming a pair are rotatably connected, but in this invention, one of the cores forming a pair is fixed and only the other core can be rotated. can also be implemented.

<Effects of the invention> According to this invention, the distance between the ends of all pairs of cores arranged in a V-shape is adjusted simultaneously according to the working environment, and foreign matter such as dirt is blown through, thereby preventing engine overheating. can be easily prevented.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view of one embodiment of the radiator of the present invention, Fig. 2 is a plan view of the core in Fig. 1 in its normal state, and Fig. 3 is a plan view of the core shown in Fig. 2 in its normal state. An explanatory diagram of the formed state, FIG. 4 is an explanatory diagram similar to FIG. 3 of another embodiment, and in the diagram, 1 indicates an upper tank;
2 is a lower tank, 3a and 3b are a pair of cores, 12 and 13 are rods as connecting members, and 19 is a turnbuckle as a connecting member.

Claims (1)

[Scope of Claim for Utility Model Registration] A radiator for a tractor in which a plurality of pairs of cores arranged in a V-shape are provided between the lower wall of a horizontally elongated upper tank and the upper wall of a lower tank, forming a pair of cores. A space is maintained between the ends forming the V-shaped bottoms of all pairs of cores, and at least one core having the same diagonal direction of all pairs of cores can be rotated into an upper tank and a lower tank, respectively. A radiator for a tractor, characterized in that it is pivotally mounted and connected to a series of movably adjustable connecting members, so that the width of the interval can be adjusted.