JP5016318B2 - Cooling device for work vehicle - Google Patents

Description

  The present invention relates to a cooling device for a work vehicle.

In order to simplify the cooling structure, an object to be cooled by passing air is provided on the cooling air introduction side of the radiator of the engine, and the cooling device for a work vehicle shown in Patent Document 1 that cools the radiator and the object to be cooled together. Is known.
JP 2003-104070 A

  However, in the cooling device for a work vehicle described in the above document, cooling air is directly introduced into the radiator through a gap formed between the radiator provided on the cooling air introduction side and the cooling object, and the cooling object is not sufficiently cooled. Have the disadvantage of

In order to solve the above-described problem, the work vehicle cooling device according to the present invention is a work vehicle cooling device in which a cooling object 8 to be cooled by first passing air is provided on the cooling air introduction side of the radiator 7 of the engine. A duct that covers a gap S formed between the object to be cooled 8 and the radiator 7 by providing a cooling object 8 having a smaller front and back area than the radiator 7 on the front side of the radiator 7 on the cooling air introduction side. 32 is brought into contact with or in proximity to the cooling air introduction side of the radiator 7 and only setting, it is characterized by the formation of the duct 32 with the elastic member.

Second, the duct 32 is formed of a translucent member having translucency.

  According to the cooling device for a work vehicle of the present invention configured as described above, the cooling air is directly introduced into the radiator through a gap formed between the radiator and the cooling object without passing through the cooling object. Therefore, both the object to be cooled and the radiator can be reliably cooled by the cooling air.

  Further, by forming the duct with an elastic member, it is possible to prevent the duct from coming into contact with the radiator and damaging the radiator, and it is also possible to positively bring the duct into contact with the radiator. And if the duct which has elasticity is made to contact a radiator, the clearance gap formed between a cooling target object and a radiator can be closed more reliably.

  Furthermore, by forming the duct with a transparent member having translucency, dust accumulated in the gap formed between the radiator and the object to be cooled can be seen through the duct. Good sex.

  FIG. 1 is an overall side view of a combine to which a work vehicle cooling device of the present invention is applied. A pre-processing unit 3 that cuts grain husks is connected to the front of the traveling machine body 2 including the crawler-type traveling unit 1 so as to be movable up and down, and a driver's seat 4 is provided on the front right side of the traveling machine body 2. The cereals harvested by the preprocessing unit 3 are conveyed to a threshing unit (not shown) on the left rear side of the preprocessing unit 3. After the cereals conveyed to the threshing section are threshed, the grains are accommodated in the glen tank 6 and the waste straw is discharged out of the machine.

  An engine (not shown) is installed below the driver's seat 4 inside the traveling machine body 2, and a radiator 7 that cools the engine and an oil cooler 8 that cools the lubricating oil of the transmission and the like (an object to be cooled) are placed on the right side of the engine. ) And are provided. The radiator 7 and the oil cooler 8 are fixed inside the traveling machine body 2 with the front surface on the cooling air introduction side facing rightward and the engine positioned on the back surface. The engine can be accessed by opening an engine cover 11 provided below the side panel 9 on the right side of the driver's seat 4.

  The engine cover 11 is a substantially rectangular plate-like member that extends in the vertical direction, covers the entire front surface of the radiator 7, a frame portion (not shown) that forms an outer frame, and has excellent ventilation and exhaustion. The dust net 12 prevents the dust from entering the interior of the traveling machine body 2 so that cooling air (air) can be sucked into the interior of the traveling machine body 2 from the outside. In addition, air inlets (not shown) are also provided on the driver seat side surface and the glen tank side surface of the side panel 9 so that the cooling air can be sucked into the traveling machine body 2 from these air inlets. It has become.

  2 and 3 are a perspective view and a side view of the radiator and the oil cooler. The radiator 7 is a member having a substantially rectangular parallelepiped shape in the vertical direction, and an input pipe 13 for feeding a coolant such as cooling water whose temperature has been increased by cooling the inside of the engine into the radiator 7 and a coolant from the input pipe 13 are injected. The upper tank 14 in the horizontal direction (the front-rear direction of the traveling machine body 2), the refrigerant in the upper tank 14 is fed, the radiator core 16 occupying most of the radiator 7, and the refrigerant cooled by the radiator core 16 are injected. The horizontal lower tank 17 and the output pipe 18 for transferring the refrigerant in the lower tank 17 into the engine again.

  The radiator core 16 has a plurality of vertical cooling pipes (not shown) for transferring the refrigerant in the upper tank 14 to the lower tank 17 and a number of cooling fins that are brought into contact with the cooling pipes to increase the cooling surface and improve the cooling efficiency. (Not shown), and the cooling air can be blown from the front side through the radiator core 16 to the back side. The cooling air receives heat from the surfaces of the cooling pipes and the cooling fins, and cools the refrigerant in the cooling pipes.

  The radiator 7 is firmly fixed inside the traveling machine body 2 via a support frame 19. The support frame 19 abuts the vertical support frames 21 and 21 that respectively support the entire sides of the radiator 7, the upper frame 22 that abuts the back surface of the upper tank 14, and the back surface of the lower tank 17. The lower frame 23 is configured to support and fix the radiator 7 in the traveling body 2 in the same posture.

  Note that a cooling fan (not shown) is installed on the back side of the radiator 7, and by rotating the cooling fan, the dust screen 12 of the engine cover 11 and the driver seat 4 described above are externally connected to the traveling machine body 2. Cooling air can be blown into the radiator 7 and the oil cooler 8 through the two air inlets of the side panel 9. A reserve tank 24 is attached to the back side of the support frame 19 to keep the internal pressure in the radiator 7 constant at a predetermined value.

  On the front surface of the radiator core 16, the aforementioned oil cooler 8 having a smaller front and rear area than the radiator 7 is provided. The oil cooler 8 is a substantially rectangular parallelepiped member disposed substantially parallel to the radiator 7, and input / output pipes 26 and 26 are connected to both ends of the lateral upper surface, respectively. The oil injected from the input / output pipe 26 passes through the oil cooler 8 and is returned from the other input / output pipe 26 to the mission or the like. The oil that passes through the oil cooler 8 is cooled by cooling air that passes from the front side through the oil cooler 8 to the back side.

  A lateral and plate-shaped mounting seat 27 projects upward on the upper surface of the oil cooler 8, and a lateral fixing plate 28 projects downward on the lower surface. The bracket 31 is attached and fixed to one of the two supports 21 and 21 that form both sides of the support frame 19 via the bracket 31. A gap S is formed between the back surface of the oil cooler 8 in a fixed state and the front surface of the radiator core 16, and the gap S is covered with a duct 32 described later.

  The duct 32 is formed of a transparent resin elastic member, covers the lower surface and both side portions of the oil cooler 8, and is a channel-shaped member extending from the oil cooler 8 toward the radiator 7. The oil cooler 8 is fixed to the lower surface. A lateral fixing hole 33 (see FIG. 5) for inserting and fixing the plate 28 is formed. Further, upper end portions of both side surfaces of the duct 32 are bent outward in the lateral direction, and mounting surfaces 34 and 34 facing upward are formed.

  The attachment 29 is a plate-like member having a substantially rectangular shape in plan view that extends from the front side of the radiator 7 toward the back side of the oil cooler 8, and both end portions thereof are bent upward. Of these ends, the end on the front side of the radiator 7 is bolted to the front side of the support frame 21 of the support frame 19, and the bracket 31 is fixed to the end on the back side of the oil cooler 8.

  The bracket 31 is an angle-shaped member along the lower surface of the fixture 29 and the end of the fixture 29 on the back side of the oil cooler 8, and extends in the lateral direction toward the installation position of the oil cooler 8. Yes.

  FIG. 4 is a perspective view showing the process of attaching the oil cooler to the bracket. The oil cooler 8 is attached and fixed to the bracket 31 by bringing the mounting seat 27 of the oil cooler 8 into contact with the front side of the bracket 31 and tightening the bolt.

  FIG. 5 is a perspective view showing a process of attaching the duct to the bracket. After the oil cooler 8 is attached and fixed to the bracket 31 as described above, the left and right attachment surfaces 34 of the duct 32 are respectively attached to the lower surface of the bracket 31 so that the fixing plate 28 of the oil cooler 8 is inserted into the fixing hole 33. The duct 32 is fixed to the bracket 31 by abutting and fixing with bolts. As described above, the bracket 31 to which the oil cooler 8 and the duct 32 are fixed is bolted to the support frame 21 via the fixture 29 as described above, so that the oil cooler 8 introduces cooling air to the radiator 7. Secured to the side.

  6A and 6B are a front perspective view and a rear perspective view of the duct and the oil cooler attached to the bracket. In the duct 32, each mounting surface 34 on the side is bolted to the bracket 31, and the fixing hole 33 is inserted into the fixing plate 28 of the oil cooler 8, so that the duct 32 is securely fixed in the same posture and position. Is done.

  In the duct 32 fixed to the oil cooler 8, the inner surfaces of the lower part and both side parts are close to or in contact with the lower surface and both side faces of the oil cooler 8, and the rear side end part is close to the front surface of the radiator core 16. Thru | or contact | abut (refer FIG. 3).

  According to the cooling device for a work vehicle having the above configuration, the gap S is covered with the bracket 31 and the duct 32, so that the cooling air that passes through the inside from the front side of the oil cooler 8 and reaches the back side is caused by the duct 32. Guided to the front side of the radiator core 16, both the refrigerant in the radiator 7 and the oil in the oil cooler 8 are efficiently cooled.

  In addition, since the duct 32 is made of a transparent elastic member, dust or the like accumulated in the duct 32 can be visually recognized, and dust or the like in the visually recognized duct 32 is removed from the duct 32 made of an elastic member. Can be removed by turning. For this reason, the maintainability of the cooling device is improved.

  Note that the object to be cooled disposed on the front side of the radiator 7 is not limited to the oil cooler 8, but is cooled by passing cooling air inside, such as a condenser for an Akon or an intercooler. I just need it. Further, the duct 32 is not limited to a transparent one, and may be a semi-transparent material as long as dust inside can be visually recognized. Furthermore, even if the end portion on the back side of the duct 32 is brought close to the front surface of the radiator 7 without being brought into contact with the front surface of the radiator 7, the introduction of the cooling air directly from the gap S to the front surface side of the radiator 7 is suppressed. Both the refrigerant and the oil cooler 8 can be efficiently cooled.

It is the whole combine side view to which the cooling device of the work vehicle of the present invention is applied. It is a perspective view of a radiator and an oil cooler. It is a side view of a radiator and an oil cooler. It is a perspective view which shows the attachment process of the oil cooler to a bracket. It is a perspective view which shows the attachment process of the duct to a bracket. (A), (B) is the front side perspective view and rear side perspective view of the duct and oil cooler which were attached to the bracket.

7 Radiator 8 Oil cooler (object to be cooled)
32 Duct S Clearance

Claims (2)

In a cooling device for a work vehicle in which a cooling object (8) to be cooled by passing air is provided on the cooling air introduction side of the radiator (7) of the engine, the cooling object has a smaller front and rear area than the radiator (7). The object (8) is provided on the front side of the radiator (7) on the cooling air introduction side, and the duct (32) covers the gap (S) formed between the object to be cooled (8) and the radiator (7). the radiator (7) of the cooling air introduction side in contact with or proximity to with only setting, a cooling device for a working vehicle to form a duct (32) by an elastic member. The work vehicle cooling device according to claim 1 , wherein the duct (32) is formed of a transparent member having translucency.

Images