JPS602015Y2 - Oil filter mounting device for agricultural tractors - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an oil filter mounting device for an agricultural tractor.

Conventionally, oil used in hydraulic systems such as agricultural tractors has a property that the viscosity increases as the temperature decreases, and conversely, the viscosity decreases as the temperature increases.

Further, it is desirable that the oil used in the hydraulic system has an appropriate viscosity; if the viscosity is too high or too low, it will be difficult to obtain smooth operation of the hydraulic system.

On the other hand, if the same lubricating oil is used throughout the year, the viscosity of the oil increases when the winter temperature drops, making it difficult for the oil to flow into the oil filter, oil pump, etc., resulting in poor operation of the hydraulic system.

Therefore, in the winter, the oil has to be replaced with a lower viscosity oil, and in some cases, the oil tank or the like must be heated with a heater, which is a hassle.

The object of this invention is to provide an oil filter mounting device for an agricultural tractor that can eliminate the above-mentioned drawbacks.

This idea provides an oil filter in the middle of an oil passage that circulates oil in a hydraulic system, and this oil filter is fixedly installed close to a high-temperature part near the engine, and there is a barrier between the oil filter and the high-temperature part. It is characterized by a removable hot plate.

Therefore, since the oil filter is installed close to the high-temperature parts near the engine, the oil filter is constantly heated during engine startup due to the radiant heat from the high-temperature parts near the engine, and the oil passing through the oil filter is also heated. As the temperature of the oil increases and its viscosity decreases, the hydraulic system can operate smoothly even at low temperatures without installing a new heater to warm the oil. By inserting a heat shield plate between them, it is possible to insulate heat and prevent the temperature of the oil from rising.

An embodiment of this invention will be described based on the drawings.

1 is a body of a tractor, and this body 1 is provided with an oil passage 2 for a hydraulic system.

An engine 3 is provided at the front of the fuselage 1, and an exhaust manifold 5, which is a high-temperature part, is connected to the cylinder head 4 of the engine 3, and a muffler 6, which is a high-temperature part, is connected to the exhaust manifold 5. It is connected.

7 is an oil filter in which a filter medium 11 is housed inside a case 10 having passages 8 and 9 communicating with the oil passage 2;
The oil filter 7 is connected midway through the oil passage 2 and is fixed below the exhaust manifold 5 and muffler 6.

Further, a removable heat shield plate 12 is provided between the exhaust manifold 5 and the muffler 6 and the oil filter 7.
is screwed to the case 10 of this oil filter 7.

With such a configuration, oil is circulated within the oil passage 2 by various hydraulic operations to operate the hydraulic system, and the oil filter 7 provided in the middle of the oil passage 2 filters oil through the filter medium 11 inside. The garbage inside is removed.

In winter, by removing the heat shield plate 12,
When the engine 3 starts, the exhaust manifold 5 and the muffler 6 are heated by the exhaust heat of the engine 3, and the oil filter 7 provided close to them is heated by the radiant heat from these.

Therefore, the oil is heated and its viscosity decreases.

In the summer, a heat shield plate 12 is installed between the exhaust manifold 5 and muffler 6 and the oil filter 7 to prevent the oil temperature from rising too high due to radiant heat from the exhaust manifold 5 and muffler 6. I can do it.

In this way, the exhaust heat from the engine 3 raises the temperature of the oil and reduces its viscosity, thereby maintaining the viscosity of the oil at an appropriate level even when the temperature is low, promoting flow to the oil filter 7, and smoothing the hydraulic system. Therefore, it is not necessary to replace the oil with oil having a different viscosity depending on the season or to install a new heater or the like to raise the temperature of the oil.

As shown in FIG. 4, a muffler 6 is directly connected to the cylinder head 4, and an oil filter 7 is installed below the muffler 6.
Even if it is fixedly provided, the same functions and effects as in the above-mentioned embodiment can be obtained.

Since this idea is constructed as described above, it is possible to use radiant heat from the high temperature parts near the engine to warm the oil and allow the hydraulic system to operate smoothly even at low temperatures. By eliminating the need for a heat shield plate and inserting a heat shield plate, it is possible to block radiant heat from high temperature parts near the engine and prevent the oil temperature from rising too much.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention. Fig. 1 is a side view, Fig. 2 is a partially enlarged side view of the oil filter in cross section, and Fig. 3 is a partially enlarged cross-sectional view of the oil filter. FIG. 4 shows a modified example, and is a partially enlarged front view of the oil filter in cross section. 2... Oil passage, 3... Engine, 5...
...Exhaust manifold (high temperature part), 6.・
...Muffler (high temperature part), 7 ...Oil filter, 12 ... Heat shield plate.

Claims (1)

[Scope of utility model registration request] An oil filter is provided in the middle of an oil passage that circulates oil in the hydraulic system, and this oil filter is fixedly provided in close proximity to a high temperature part near the engine, and a heat shield plate is provided between the oil filter and the high temperature part. An oil filter mounting device for an agricultural tractor characterized by being provided in a detachable manner.