JP4638922B2 - Radiator dustproof device for work equipment - Google Patents

Description

  The present invention relates to a radiator dustproof device for a working machine, which includes a radiator for cooling an engine standing on a support portion on a vehicle body via a cushioning material, and a radiator support that supports an upper end portion of the radiator.

As a technique for detachably providing a dustproof tool that acts on a radiator for cooling an engine, there has conventionally been one described in Patent Document 1, for example.
In the technique described in Patent Document 1, dust-proofing equipment mounting rails are provided on both sides of the radiator so as to be provided with dustproofing equipment mounting grooves, and dustproofing is achieved by inserting the dustproofing equipment into the dustproofing equipment mounting groove from above the radiator. The dustproof tool is removed by attaching the tool, guiding the dustproof tool to the dustproof tool mounting rail, and lifting it out of the dustproof tool mounting groove.

JP 9-328018 A (paragraph [0021], FIGS. 2 and 3)

In the working machine described above, when the lower end of the radiator is supported by the lower end of the radiator, and the upper end of the radiator is supported by the connecting portion provided to be connected to the radiator support at the upper end of the radiator, Can be brought close to each other as much as possible. Moreover, the connection part of a radiator can be utilized for a dustproof tool support means.
In this case, when the above-described conventional technique is adopted, the buffering effect of the radiator may be reduced.
In other words, when the conventional technique is adopted, the dustproof tool is slidably attached to and removed from the radiator in the vertical direction, so that the radiator vertical support rail is connected across the connecting portion and the lower end portion of the radiator. Then, the connecting portion located at the upper end portion of the radiator is connected to the lower end portion of the radiator by the support rail and is not easily elastically deformed, and vibrations caused by running and engine driving are easily transmitted to the radiator.

  An object of the present invention is to provide a dustproof slidable attachment / detachment device in a state where the connecting portion of the radiator is used as a support means of the support rail, and further to prevent a reduction in the buffering effect of the radiator. To provide an apparatus.

The first aspect of the present invention is a radiator dustproof device for a working machine, comprising a radiator for cooling an engine standing on a support portion on a vehicle body via a cushioning material, and a radiator support for supporting an upper end portion of the radiator.
The radiator support is positioned on the front side of a pair of left and right support columns, which are fixed to the vehicle body frame at the lower end, and are erected on the front side of each end in the left-right direction of the radiator, and the upper end of the radiator, It is composed of a bent portion that is bent in a portal shape when viewed from the front and rear of the vehicle body, with a sideways portion that continues to the upper ends of the pair of left and right support columns.
A connecting portion provided to be connected to the radiator support at the upper end portion of the radiator is configured by a plate-like tongue piece extending from the upper end portion of the radiator in a state in which the plate surface faces in the vertical direction,
A lower support rail is provided laterally to the radiator at the lower end of the radiator,
The connecting portion is supported by an upper support rail facing the radiator,
A dustproof device acting on the radiator is supported by the lower support rail and the upper support rail so as to be slidable and removable in the lateral direction of the radiator.

According to the configuration of the first aspect of the invention, the upper support rail is supported by the connecting portion of the radiator, and the support rail means is configured by the upper support rail and the lower support rail provided at the lower end portion of the radiator. Since the dustproof tool is slidably supported in the lateral direction of the radiator, use the radiator connecting part as the support means for the upper support rail, and the radiator connecting part is not connected to the lower end of the radiator by the support rail. The dustproof tool can be slidably supported.
Moreover, the buffer part by elastic deformation can be exhibited satisfactorily by the connecting part.

Therefore, while the dustproof tool can be easily detached and attached by the slide operation, the structure can be easily obtained by using the connecting portion of the radiator as the support means of the upper support rail. In addition, the coupling portion of the radiator is not coupled to the lower end portion of the radiator, and the elastic function of the coupling portion can be utilized well, and the buffering of the radiator by the cushioning material can be effectively exhibited.
Further, in addition to the cushioning action of the cushion material, the cushioning action by the connecting portion can be exhibited well, and the cushioning can be satisfactorily buffered so as to suppress the vibration of the radiator due to the vehicle body vibration caused by running and engine driving.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an overall side view of a working machine according to an embodiment of the present invention. FIG. 2 is an overall plan view of the working machine according to the embodiment of the present invention. As shown in these drawings, a working machine according to an embodiment of the present invention includes a pair of left and right steering operations and driveable front wheels 1 and 1, a pair of left and right driveable rear wheels 2 and 2, and a vehicle body. A driving part A having an engine 3 provided at the front part and a driving part B having a driving seat 5 provided between the left and right rear wheel fenders 4 and 4 at the rear part of the vehicle body; A self-propelled vehicle is configured, and a link mechanism 10 having a pair of left and right lift arms 11 and 11 and a power take-out shaft 7 are provided at the rear part of the body frame 6 of the self-propelled vehicle.

  This working machine is configured to connect a rotary tiller (not shown) to the rear part of the vehicle body via the link mechanism 10 and to transmit the output of the engine 3 from the power take-out shaft 7 to the rotary tiller. A riding-type field cultivator is constructed. Thus, this working machine constitutes various riding-type working machines by drivingly connecting various working devices to the rear part of the vehicle body.

  FIG. 3 is a side view of the driving section A. As shown in FIG. 1 and FIG. 1, the driving section A includes the engine 3, a radiator 20 provided on the front side of the vehicle body with respect to the engine 3, and a space between the radiator 20 and the engine 3. The rotary fan 21 is provided, and the rotary fan 21 and the radiator 20 cool the engine 3.

  That is, the rotary fan 21 is driven to rotate by the output shaft 3a of the engine 3, and the air outside the engine bonnet 22 is sucked into the engine bonnet from the intake port 23 by the air blowing action of the rotary fan 21 to generate cooling air. The cooling air is circulated from the front side of the vehicle body to the rear side of the vehicle body through the heat exchanging portion 20a (see FIG. 4) of the radiator 20, and the engine coolant that circulates between the engine 3 and the radiator 20 is cooled by the radiator 20.

FIG. 3 shows a structure of the radiator support structure in a side view. FIG. 4 is a front view of the radiator support structure. As shown in these drawings, the radiator 20 includes a support portion 24 provided on a front wheel support frame 6a constituting a front portion of the vehicle body frame 6 and a radiator lateral direction of a lower tank portion 20b as a lower end portion of the radiator 20 ( It is erected on the support 24 via a cushioning material 25 provided between both ends in the lateral direction of the vehicle body. A radiator support 28 is provided with connecting portions 26 provided at both ends of the upper tank 20c as the upper end of the radiator 20 in the lateral direction of the radiator, and standing on the front wheel support frame 6a near the vehicle front side of the support 24. The upper end portion 20c of the radiator 20 is supported by the radiator support 28 by being connected to the support piece portion 29 located at the upper end portion of the radiator 20 via a connecting screw 30. The radiator support 28 is erected on the front wheel support frame 6 a via the battery mounting table 27.

  FIG. 6 is a perspective view of the radiator support 28. As shown in FIG. 4 and FIG. 4, the radiator support 28 includes a support body 28 a formed of a bending rod that is bent so as to have a gate shape when viewed from the front-rear direction of the vehicle body, and a pair of left and right of the support body 28 a. And a connecting member 28b for connecting the support columns. The radiator support 28 facilitates the supply of the engine cooling air to the radiator 20 by allowing the engine cooling air to flow between the left and right struts of the support body 28a.

  FIG. 3 shows the structure of the cushioning material 25 in a longitudinal section. As shown in this figure, each buffer material 25 includes a fastening portion 25a provided on the lower end side of the buffer material 25, a main buffer portion 25b provided on the upper end side of the buffer material 25, and the buffer material 25 in the vertical direction. And a support hole 25c penetrating therethrough. The pair of left and right cushioning materials 25, 25 are made of a rubber material.

  That is, each cushioning material 25 is formed by fitting the fastening portion 25a into the mounting hole 24a of the support portion 24 and fitting the mounting projection 20d provided on the lower tank portion 20b of the radiator 20 into the support hole 25c. In a predetermined mounting state, the fastening portion 25a and the main buffer portion 25b perform a buffering action so as to suppress the vibration of the radiator 20 due to the vibration of the vehicle body caused by running and engine driving.

  As shown in FIGS. 3, 4, and 5, the pair of left and right connecting portions 26 and 26 of the radiator 20 are formed by metal plate tongues extending from the upper tank portion 20 c toward the front of the vehicle body. Further, it is elastically deformed by the vibration of the radiator support 28 caused by the engine drive, and thereby acts as a buffer so as to suppress the vibration of the radiator 20 due to the vibration of the radiator support 28.

  As shown in FIG. 3, the driving section A includes a radiator dustproof device 35 having a dustproof device 36 provided on the vehicle body front surface side (cooling air suction surface side) of the radiator 20. The sucked dust is received by the dustproof tool 36 to prevent the dust from flowing into the radiator 20.

  FIG. 5 is a plan view of the radiator dust-proof device 35. As shown in this figure and FIGS. 3 and 4, the radiator dustproof device 35 includes the dustproof device 36, and a radiator horizontal lower support rail 37 provided in a lower tank portion 20 b as a lower end portion of the radiator 20, An upper support rail 38 that faces the radiator and is supported by a support piece 26a provided in the pair of left and right connecting portions 26, 26 is provided.

  FIG. 6 is a perspective view of the lower support rail 37 and the upper support rail 38. As shown in the figure, the lower support rail 37 and the upper support rail 38 are composed of a guide groove 39 provided from one end side to the other end side of the lower support rail 37 and the upper support rail 38, a lower support rail 37, An attachment / detachment opening 40 that opens the guide groove 39 laterally outward of the radiator on one end side of the upper support rail 38, and a stopper that closes the guide groove 39 on the other end side of the lower support rail 37 and the upper support rail 38. 41. The lower support rail 37 includes a pair of connecting pieces 37 a that are connected to the lower tank portion 20 b of the radiator 20.

  FIG. 7 shows the structure of the dustproof device 36 at the front. As shown in the figure, the dustproof tool 36 includes a dustproof net 36a and a shape retaining frame 36b connected to the periphery of the dustproof net 36a.

  FIG. 7 is a front view showing a procedure for attaching and detaching the dustproof tool 36. FIG. 8 is a front view of the radiator dust-proof device 35 in a state in which a dust-proof device is mounted. As shown in these drawings, the dustproof tool 36 is inserted into the guide groove 39 through the attachment / detachment port 40 between the lower support rail 37 and the upper support rail 38, and contacts the stopper 41 in the lateral direction of the radiator along the guide groove 39. Slide until Then, the dustproof tool 36 can be mounted in a predetermined assembled state, and the entire cooling air suction surface of the radiator 20 can be covered with the dustproof tool 36.

  The dustproof tool 36 is slid in the radiator laterally along the guide groove 39 between the lower support rail 37 and the upper support rail 38 to the side where the attachment / detachment port 40 is located, and the lower support rail 37 and the upper support rail 38 are attached / detached. The dustproof tool 36 can be removed by extracting from the mouth 40.

Overall side view of work equipment Overall plan view of work equipment Side view of the prime mover Front view of radiator support structure Top view of radiator dustproof device Perspective view of radiator support, lower support rail and upper support rail Front view of the dustproof attachment / detachment procedure Front view of the radiator dustproof device with the dustproof device attached

20 Radiator 24 Supporting portion 25 Buffer material 26 Connecting portion 28 Radiator support body 36 Dustproof device 37 Lower support rail 38 Upper support rail

Claims (1)

A radiator dustproof device for a work machine comprising a radiator for cooling an engine standing on a support portion on a vehicle body via a cushioning material, and a radiator support for supporting an upper end portion of the radiator,
The radiator support is positioned on the front side of a pair of left and right support columns, which are fixed to the vehicle body frame at the lower end, and are erected on the front side of each end in the left-right direction of the radiator, and the upper end of the radiator, It is composed of a bent portion that is bent in a portal shape when viewed from the front and rear of the vehicle body, with a sideways portion that continues to the upper ends of the pair of left and right support columns.
A connecting portion provided to be connected to the radiator support at the upper end portion of the radiator is configured by a plate-like tongue piece extending from the upper end portion of the radiator in a state in which the plate surface faces in the vertical direction,
A lower support rail is provided laterally to the radiator at the lower end of the radiator,
The connecting portion is supported by an upper support rail facing the radiator,
A radiator dustproof device for a work machine, wherein a dustproof tool acting on the radiator is supported by the lower support rail and the upper support rail so as to be slidable and detachable in a lateral direction of the radiator.

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