JP4346353B2 - Working vehicle radiator grill - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a radiator grill for a work vehicle provided with a plurality of horizontal rails arranged in the vertical direction of a vehicle body and a vent hole positioned between the horizontal rails.
[0002]
[Prior art]
The radiator grill has been conventionally configured as shown in FIG.
That is, the cross-sectional shape of the horizontal rail 30 is changed from the horizontal rail main body 31 along the inside and outside of the radiator grille, from the radiator grill outer end 31a of the horizontal rail main body 31 to the lower side of the horizontal rail main body 31 and to the inside of the radiator grille. The bent shape is provided with the extended reinforcing portion 32, and the cross-sectional shape of the reinforcing portion 32 is set to the bent shape.
[0003]
[Problems to be solved by the invention]
In this type of radiator grille, in order to provide the horizontal rail 30 with the necessary strength against bending, the size H of the horizontal rail 30 in the vertical direction of the radiator grill and the size D in the inside and outside of the radiator grille are set to it. It must be matched. For this reason, in the case of the conventional radiator grille, if the size W of the ventilating holes 24 between the horizontal rails 30 in the vertical direction of the radiator grilles is increased as much as possible while providing the horizontal bars 30 with the required strength, If the cross-sectional view of the crosspiece 31 is almost horizontal, and if cut straw or cut grass is placed on the top of the crosspiece, the running or engine will be stopped and there will be no air flow or intake It was easy to remain.
[0004]
An object of the present invention is to provide a radiator grill for a work vehicle that makes it easy to avoid troubles such as dust accumulation while making the crosspieces light and strong and making the vent holes large.
[0005]
[Means for Solving the Problems]
The configuration, operation, and effect of the first invention are as follows.
[0006]
〔Constitution〕
A radiator grille for a work vehicle having a plurality of horizontal rails arranged in the vertical direction of the vehicle body, and a vent hole located between the horizontal rails,
The cross-sectional shape of each of the plurality of horizontal rails extends from the lateral rail main body along the inside and outside of the radiator grille, from the outer end of the horizontal grill to the lower side of the horizontal rail main body, and toward the inside of the radiator grille. A bent shape with a reinforced part,
The horizontal cross-sectional view of the horizontal rail body is set to an outwardly lowered posture that is positioned at a lower level toward the outside of the radiator grille from the inner end to the outer end of the radiator grille,
Set the cross-sectional shape of the reinforcing portion to a linear shape,
A label mounting base that is connected to a part of the plurality of horizontal rails at a central portion of the radiator grille in the horizontal direction of the vehicle body is more vehicle-mounted than the horizontal rail that the front end of the label mounting base is connected to the label mounting base. It is located on the front side, and the rear end of the vehicle body of the label mounting base is integrally formed with the horizontal rail in an arrangement located on the rear side of the vehicle body from the front end of the horizontal rail connected to the label mounting base .
A connecting body in the vertical direction of the vehicle body, in which a pair of adjacent horizontal beams are connected to each other at a portion located on both lateral outer sides in the horizontal direction of the vehicle body with respect to the label mounting base of the radiator grill, is integrally formed with the horizontal beam.
[0007]
[Action]
The cross-sectional shape of each horizontal rail is made up of a horizontal beam main body extending in and out of the radiator grille, and a reinforcing portion extending from the outer end of the horizontal grill to the lower side of the horizontal beam main body and toward the inside of the radiator grille. Because it has a bent shape, each crosspiece is lightweight for its overall size.
[0008]
The horizontal cross-sectional view of the crosspiece body is set to an outwardly lowered posture that is positioned at a lower level from the radiator grille inner end to the outer end, and the reinforcement cross-sectional shape is set to a linear shape. Therefore, the size of the horizontal rail in the vertical direction of the radiator grill and the size of the radiator grill in the inside and outside of the radiator grille should be commensurate with the strength of the horizontal rail, and the radiator grille in the vent hole Even if the size in the direction is such that ventilation is easy, the posture of the horizontal beam main body in the cross-sectional view, and the inclination of the outer side is inclined, for the size of the horizontal beam and the vent hole Can take a steep posture. Thereby, even if garbage such as straw scraps is placed on the upper surface of the horizontal rail, it becomes easy to fall.
[0009]
〔effect〕
Therefore, the size of each ventilation hole in the vertical direction of the radiator grille is large, so that cooling air can be easily supplied, and the weight and strength of each horizontal rail are light and strong. Moreover, even if garbage such as straw scraps is placed on the horizontal rail, it is easy to fall and not easily accumulate.
[0010]
The configuration, operation, and effect of the second invention are as follows.
[0011]
〔Constitution〕
In the configuration of the first aspect of the invention, the posture of the reinforcing portion in a cross sectional view is set to a horizontal or substantially horizontal linear posture.
[0012]
[Action]
Because the posture of the reinforcement section in the cross-sectional view is set to a horizontal or almost horizontal linear posture, it extends downward from the outer end of the radiator grille of the horizontal rail body, and becomes a lower level toward the extended end side. Compared to the position of the inwardly descending position, the air vent between the horizontal beams is larger in the vertical direction of the radiator grille, while facing upward from the radiator grille outer edge of the horizontal beam body Compared to setting the posture to be inwardly rising and located at a higher level toward the extended end side, the thickness of the horizontal rail formed by the horizontal beam main body and the reinforcing portion in the vertical direction of the radiator grill is larger While doing so, the horizontal beam can be bent into the horizontal beam body and the reinforcing portion.
[0013]
〔effect〕
Accordingly, the size of the vent hole in the vertical direction of the radiator grill can be made as large as possible so that the cooling air can easily pass through, and the thickness of the cross beam can be made as large as possible to improve the cross beam strength.
[0014]
The configuration, operation, and effect of the third invention are as follows.
[0015]
〔Constitution〕
In the configuration of the first or second aspect of the invention, the posture of the horizontal rail body in a cross-sectional view is set to a bent posture bent between the inner end and the outer end of the radiator grille.
[0016]
[Action]
Since the horizontal cross-sectional view of the crosspiece body is set to a bent posture between the inner end and the outer end of the radiator grille, it is possible to make a straight flat posture from the inner end of the radiator grille to the outer end. In comparison, the strength of the horizontal beam body against bending is increased.
[0017]
〔effect〕
Therefore, the horizontal beam exhibits excellent strength due to the bent shape composed of the horizontal beam main body and the reinforcing portion, and also exhibits excellent strength depending on the bending posture of the horizontal beam main body, even if scattered stones collide. It becomes strong, such as being hard to break.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIGS. 1 and 2, the pair of left and right front wheels 1 and the rear wheel 2 are driven by the power transmitted from the engine 3 located in the driving portion, and the pair of left and right front wheels 1 rotate the steering handle 4. A link mechanism 6 that is configured to travel by being steered by the vehicle and that includes a pair of left and right lower links 6a at the rear of the self-propelled vehicle body that includes the fall protection frame 10 that is located behind the driver seat 5. And a tractor as an example of a work vehicle is configured.
[0019]
This tractor connects the rotary tiller to the rear part of the vehicle body via the link mechanism 6 and transmits the driving force of the engine 3 from a power take-off shaft (not shown) located at the rear part of the vehicle body to the rotary tiller device. It is configured to drive the rotary, and is configured to swing the link mechanism 6 up and down by a lift cylinder (not shown) located at the rear of the vehicle body to move the rotary tiller up and down. For example, a tiller is configured, and various working devices are connected to the rear part of the vehicle body so as to be lifted and driven freely to form various riding-type working machines.
[0020]
A headlamp device 8 and radiator grills 9 and 20 disposed on both upper and lower sides of the headlamp device 8 are provided at the front end portion of the engine bonnet 7 located in the driving portion. The engine bonnet 7 can be pivoted up and down by a fixed bonnet portion 7a fixed to the vehicle body and a rocking fulcrum located above the fixed bonnet portion 7a and at an end portion on the rear side of the vehicle body. The opening / closing bonnet part 7b comprised is comprised. The headlamp device 8 and the lower radiator grill 9 located on the lower side of the headlamp device 8 are attached to the front end portion of the fixed bonnet portion 7a, and are located on the upper side of the headlamp device 8. The upper radiator grill 20 is attached to the front end portion of the open / close bonnet portion 7b.
[0021]
As shown in FIGS. 4 and 5, the upper radiator grille 20 includes a plurality of horizontal rails 30 and horizontal rails 30 that are arranged in the vertical direction of the vehicle between an upper frame 21 and a lower frame 22 that are lateral to the vehicle. Between the horizontal rail 30 and the upper end frame 21, between the horizontal rail 30 and the lower end frame 22, a radiator grill body 20a provided with a vent hole 24, and one side surface on the inner surface side of the radiator grill main body 20a. The upper end frame 21, the lower end frame 22 and the horizontal grill 30 are provided with a dust removal net 40 provided so as to come into contact with the inner end of the radiator grill, and the upper end frame 21 and the lowermost horizontal rail 30 on the radiator grille inner surface side The mounting screws 25 provided at two locations in the vehicle body lateral direction are attached to the support portion of the open / close bonnet portion 7b to be fixed to the open / close bonnet 7b. Then, by the suction action that the engine cooling fan 3 a shown in FIG. 1 is driven by the engine 3, air outside the engine bonnet flows into the engine bonnet through the vent holes 24 and the dust removal net 40 to generate cooling air. The cooling air is supplied to the engine cooling radiator 3b.
[0022]
The center portion of the dust net 40 is fixed to the radiator grill body 20a by means of net mounting screws 26 provided at two locations on the inner side of the center portion of the radiator grill body 20a in the lateral direction of the vehicle body, and dust removal is performed as shown in FIG. The dust removal net 40 is fixed by sandwiching the peripheral edge 41 of the net 40 between the peripheral edge of the radiator grill body 20a and the end of the open / close bonnet 7b.
[0023]
As shown in FIGS. 4 and 5, the radiator grill body 20a includes a lateral frame upper end frame 21 located at the upper end of the radiator grill body 20a and a lateral frame lower end frame 22 located at the lower end of the radiator grill body 20a. The horizontal end frame 27 vertically facing the vehicle body located at both lateral ends of the radiator grill body 20a, the plurality of lateral bars 30, the upper end frame 21 connected to both the lateral end frames 27, and the adjacent horizontal bars. 30, intermediate members of a pair of adjacent horizontal rails 30, or a connecting body 28 that connects the lower end frame 22 and intermediate portions of adjacent horizontal rails 30, and a radiator of some horizontal rails 30. Each of the label mounting bases 29 connected over the outer surface of the grill is provided as a resin-made integral part simultaneously formed by resin molding.
[0024]
As shown in FIGS. 5 and 6, the cross-sectional shape of each of the plurality of horizontal rails 30 is a plate-like horizontal rail main body 31 along the inside / outside direction of the radiator grille, and a radiator grill outer end 31a of the horizontal rail main body 31. A bent shape having a plate-like reinforcing portion 32 extending from the side of the crosspiece main body 31 to the lower side of the horizontal rail body 31 and toward the inside of the radiator grille. The horizontal cross-section body 31 is viewed in a transverse cross-sectional view, and is inclined outwardly from the radiator grille inner end 31b to the outer end 31a so that the outer side of the radiator grille is located at a lower level, and the inner end 31b and the outer end. The bending posture is set as follows, bent at the upper bulge at bending points 33a and 33b located at two locations between 31a. The inclination angle at the portion located outside the radiator grille from the bending point 33a located on the inner side of the radiator grill is steeper than the inclination angle at the portion located inside the radiator grille from the bending point 33a. Further, the inclination angle at the portion located outside the radiator grille from the bending point 33b located on the outside of the radiator grille is steeper than the inclination angle at the portion located inside the radiator grille from the bending point 33b. In addition, the posture is bent at two bending points 33a and 33b. The shape of the reinforcing portion 32 in a cross-sectional view is set to a linear shape extending linearly or substantially horizontally from the radiator grill outer end 31a of the cross rail main body 31.
Thereby, each horizontal beam 30 is reduced in weight due to the bent shape formed by the horizontal beam main body 31 and the reinforcing portion 32 and the bent posture of the horizontal beam main body 31 for the size of the entire horizontal beam, and Exhibits excellent strength against bending, etc.
The size H of the horizontal rail 30 in the vertical direction of the radiator grille and the size D of the radiator grille in and out of the radiator grille correspond to the strength provided to the horizontal rail 30 and the vertical direction of the radiator grille of the air holes 24 Although the size W at the top is of a size that facilitates ventilation, the downward slope of the outer side of the horizontal beam main body 31 becomes steep, and dust such as straw scraps on the upper surface of the horizontal beam 30 Even if it is placed, it is easy to fall and difficult to deposit.
[0025]
As shown in FIG. 3 and the like, the overturn protection frame 10 includes a lower frame 11 that is fixed to both lateral sides of the vehicle body and that is vertically oriented with respect to the vehicle body. The upper frame 12 is supported by being swingably supported by switching to the retracted posture. A rear lamp device 13 having a direction indicator lamp and a stop lamp is attached to each of the left and right legs 12 a of the upper frame 12.
[0026]
The attachment structure of each of the left and right rear lamp devices 13 is configured as shown in FIG.
That is, a lamp mounting base 14 is provided on the side of the upper frame 12 facing inward of the vehicle body of the leg portion 12a, and the rear lamp device 13 is fastened and fixed to the lamp mounting base 14 by a pair of mounting screws 15. An electric wire wired along the inward surface of the leg 12a and welded to the leg 12a and a presser 17 configured to be screwed to the pedestal 16 and fixed to the leg 12a The end portion of the 18 lamp mounting base 14 from the wiring hole 14 a is connected to the electric wire of the rear lamp device 13 by a connector 19.
[Brief description of the drawings]
[Fig. 1] Side view of the entire tractor [Fig. 2] Plan view of the entire tractor [Fig. 3] Rear view of the tractor [Fig. 4] Front view of the radiator grill [Fig. 5] Cross-sectional view of the radiator grill [Fig. [Fig. 7] Cross-sectional view of the dust screen fixing part [Fig. 8] Rear-lamp device mounting structure [Fig. 9] Cross-sectional view of a conventional radiator grill [Explanation of symbols]
20 radiator grill 24 vent hole
28 linked body
29 Label mounting base 30 Horizontal beam 31 Horizontal beam body 31a Radiator grille outer end 31b Horizontal beam body radiator grille inner end 32 Reinforcement part

Claims (3)

A radiator grille for a work vehicle having a plurality of horizontal rails arranged in the vertical direction of the vehicle body, and a vent hole located between the horizontal rails,
The cross-sectional shape of each of the plurality of horizontal rails extends from the horizontal rail main body along the inside and outside of the radiator grille, from the outer end of the radiator grille of the horizontal rail main body to the lower side of the horizontal rail main body, and toward the inside of the radiator grille. A bent shape with a reinforced part,
The horizontal cross-sectional view of the horizontal rail body is set to an outwardly lowered posture that is positioned at a lower level as the outside of the radiator grille reaches from the inner end to the outer end of the radiator grille,
Set the cross-sectional shape of the reinforcing portion to a linear shape,
A label mounting base that is connected to a part of the plurality of horizontal rails at a central portion of the radiator grille in the horizontal direction of the vehicle body is more vehicle-mounted than the horizontal rail in which the front end of the label mounting base is connected to the label mounting base. It is located on the front side, and the rear end of the vehicle body of the label mounting base is integrally formed with the horizontal rail in an arrangement located on the rear side of the vehicle body from the front end of the horizontal rail connected to the label mounting base .
An operation in which a vehicle body vertical connection body in which a pair of adjacent horizontal beams are connected to each other at a portion located on both lateral sides in the vehicle lateral direction with respect to the label mounting base of the radiator grill is integrally formed with the horizontal beam. Car radiator grill. 2. The radiator grille for a work vehicle according to claim 1, wherein the posture of the reinforcing portion in a cross sectional view is set to a horizontal or substantially horizontal linear posture. The radiator grille for a work vehicle according to claim 1 or 2, wherein a posture of the horizontal rail main body in a cross sectional view is set to a bent posture between the inner end and the outer end of the radiator grill.

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