JP5604377B2 - Wheel loader - Google Patents

Description

  The present invention relates to a wheel loader.

  In the wheel loader, a machine room and a cooler room are provided in the rear vehicle body. And in order to prevent noise from the engine provided in the machine room, the machine room and the cooler room are partitioned by a partition wall (see Patent Document 1).

JP 2004-142597 A

  However, in the wheel loader described in the above-mentioned patent document, when removing the partition wall for engine inspection or the like, it is difficult to pull the partition wall out of the vehicle after releasing the fixed partition wall. Moreover, it is difficult to insert the partition wall once pulled out of the vehicle into the vehicle again.

(1) A wheel loader according to the invention of claim 1 includes a machine room provided in a rear body of the wheel loader, a cooler room provided in the rear body of the wheel loader behind the machine room, a machine room, and a cooler. It is a partition with a chamber, Comprising: At least one part is equipped with the plate-shaped partition wall which can be inserted or extracted in the left-right direction of a wheel loader, and the guide which guides the partition wall inserted in the left-right direction of a wheel loader.
(2) according to claim 2 invention, there is provided a wheel loader according to claim 1, the guide, characterized in that the guide rails for supporting the partition wall from below as well as guide the barrier ribs insertion in the horizontal direction ho Iruroda And
(3) The invention according to claim 3 is the wheel loader according to claim 2, wherein the lower end of the partition wall is folded upward, and the guide rail contacts the lower end of the partition wall when guiding the partition wall. A water drain hole is provided below the contact position.
(4) The invention of claim 4 is the wheel loader according to any one of claims 1 to 3, the partition wall is divided into two or more in the vertical direction, characterized in Rukoto.

  According to the present invention, the partition between the machine room and the cooler room, at least a part of which is inserted into and removed from the left and right direction of the wheel loader, and the partition wall that is inserted and removed in the left and right direction of the wheel loader are guided. Since the structure is provided with a guide to perform, the partition wall can be easily attached and detached.

It is a side view of a wheel loader. It is a side view which shows typically the inside of the building cover provided in the rear part vehicle body. It is a perspective view which shows typically the inside of the building cover provided in the rear part vehicle body. It is a perspective view of a partition and a guide rail. It is a VV arrow sectional view of Drawing 4.

  With reference to FIGS. 1-5, one Embodiment of the wheel loader by this invention is described. FIG. 1 is a side view of the wheel loader according to the present embodiment. FIG. 2 is a side view schematically showing the interior of a later-described building cover 130 of the rear body 120 of the wheel loader 100. FIG. 3 is a perspective view schematically showing the inside of the building cover 130 of the rear vehicle body 120.

  The wheel loader 100 includes a front vehicle body 110 having an arm 111, a bucket 112, a tire 113, and the like, and a rear vehicle body 120 having an operation room 121, a machine room (engine room) 122, a cooler room 126, a tire 123, and the like. Is done. The engine chamber 122 is covered with an engine hood 140 at the top and a building cover 130 that can be opened and closed on the side. As will be described later, the building cover 130 is configured to open outward with the upper hinge as a center, and is configured to be held open by a gas spring (not shown).

  The engine hood 140 is provided with an intake pipe (not shown) for taking in air necessary for driving the engine 301 from the outside and a tail pipe 171 for exhausting exhaust gas. The cooler chamber 126 is provided behind the engine chamber 122, and is partitioned from the engine chamber 122 by partition walls 360 and 370. The side surface of the cooler chamber 126 is covered with a part of the building cover 130 and the cooler building cover 132, and the upper surface of the cooler chamber 126 is covered with the cooler building cover 132. The cooler chamber 126 is provided with a plurality of coolers (heat exchangers) and the like. The cooler building cover 132 opens rearward. The opening portion is covered with a grill 200 attached to be openable and closable.

  In the engine chamber 122, an air cleaner (not shown) and an exhaust gas purification device 320 are provided above the engine 301 (FIG. 2). The exhaust gas purification device 320 is provided with an oxidation catalyst, a particulate matter removal filter, and a silencer.

  A counterweight 124 is attached to the rear of the rear vehicle body 120. A hydraulic oil tank 125 is provided in front of the engine chamber 122.

  The arm 111 is turned up and down (up and down) by driving an arm cylinder (not shown), and the bucket 112 is turned up and down (dumped or clouded) by driving the bucket cylinder 115. The front vehicle body 110 and the rear vehicle body 120 are pivotally connected to each other by a center pin 101, and the front vehicle body 110 is refracted left and right with respect to the rear vehicle body 120 by expansion and contraction of the steering cylinder 116. For convenience of explanation, the present embodiment defines the front-rear and left-right directions and the up-down direction as described in the respective drawings.

  In the cooler chamber 126, a radiator frame 135 and an air cooling fan unit 297 are disposed. The radiator frame 135 includes a radiator 291 that cools the cooling water of the engine 301, an oil cooler (not shown) for cooling the hydraulic oil, and an intercooler (not shown) that cools the air pressurized by the supercharger of the engine 301. Etc. are attached. Depending on the model of the wheel loader 100, various radiators such as a transmission oil cooler and a condenser of an air conditioner for air conditioning in the cab 121 are attached to the radiator frame. The radiator frame is fixed to the rear vehicle body 120.

  The air cooling fan unit 297 includes an air cooling fan 297 b driven by a fan motor 297 a and a fan shroud 297 c, and is disposed in front of the radiator frame 135.

--- About partition walls 360 and 370 ---
As described above, the partition walls 360 and 370 are members that partition the engine chamber 122 and the cooler chamber 126, and suppress noise generated in the engine 301. That is, the side of the cooler chamber 126 of the building cover 130 and the grill 200 are provided with openings through which cooling air enters and exits, so that noise generated by the engine 301 from these openings is exposed to the outside. Partitions 360 and 370 are provided to prevent transmission. The partition walls 360 and 370 are fixed to the rear surface of the substantially gate-shaped building cover support member 160 erected on the rear vehicle body 120 by, for example, bolting. The partition wall 360 is attached to the upper part of the building cover support member 160, and the partition wall 370 is attached to the building cover support member 160 and a front guide plate 381 of a guide rail 380, which will be described later, by bolts and nuts, for example. Yes.

  For example, the lower partition wall 370 becomes an obstacle during operations such as inspection, adjustment, and replacement of belts (not shown) of the engine 301, and replacement of hoses that send hydraulic oil from a hydraulic oil pump (not shown) to the fan motor 297a. . Therefore, when performing these operations, the lower partition 370 is removed, and the partition 370 is attached again after the operation is completed.

  Therefore, as shown in FIGS. 3 and 4, in the wheel loader of the present embodiment, a guide rail 380 is provided below the partition wall 370 so that the lower partition wall 370 can be easily attached and detached. FIG. 4 is a perspective view of the partition wall 370 and the guide rail 380. The guide rail 380 is disposed so as to extend in the left-right direction between the left and right leg portions of the building cover support member 160 having a substantially portal shape. The guide rail 380 supports the partition 370 from below when moving the partition 370 in the left-right direction, and guides the movement of the partition 370 in the left-right direction. The partition wall 370 can be removed by being pulled out to the right side or the left side of the wheel loader 100.

  The partition 370 is configured as follows so that it can be easily supported and guided by a guide rail 380 described in detail later. That is, the partition wall 370 reduces the surface pressure at the contact portion with the guide rail 380 so that the sliding property on the guide rail 380 when inserting and removing in the left-right direction is good, and the plate-shaped partition wall 370. In order to improve the strength, the lower end 371 and the upper end 372 are folded by hemming bending. In addition, the partition wall 370 has a projecting portion 373 that extends in the vertical direction and is processed to protrude rearward in order to improve the strength of the plate-shaped partition wall 370.

  As described above, the partition wall 370 is fixed to the building cover support member 160 and the front guide plate 381 of the guide rail 380 below the partition wall 360 with bolts and nuts. In the present embodiment, in order to facilitate the attachment and detachment of the partition wall 370 for the above-described inspection work or the like, the fixing portion of the partition wall 370 is in the vicinity of the building cover 130, that is, the partition wall so that the operator can easily reach it. It is provided near the left and right ends of 370. In FIG. 4, reference numeral 391 denotes a bolt for fixing the partition wall 370 to the building cover support member 160 and the front guide plate 381 of the guide rail 380.

  In this way, the partition wall 370 is fixed only in the vicinity of the four corners of the plate-shaped partition wall 370 having a substantially rectangular shape, and is not fixed in the vicinity of the center of the rectangle. Therefore, the partition wall 370 easily vibrates due to vibration of the engine 301 or the like. turn into. Therefore, in the present embodiment, as described above, the partition wall 370 is reinforced by providing the folded portions and the protruding portions 373 of the lower end 371 and the upper end 372. Thereby, vibration of the partition 370 during operation of the wheel loader 100 can be suppressed.

  A handle hole 374 is provided in the vicinity of the left and right ends of the partition wall 370 as a place where a worker on the machine side of the wheel loader 100 places a hand when inserting and removing in the left and right direction. The handle hole 374 is an opening provided in the plate-like partition wall 370. In order to prevent sound leakage from the engine 301 through the handle hole 374 and unintentional air flow between the engine chamber 122 and the cooler chamber 126, it is desirable to close the handle hole 374 when not in use. .

  Therefore, in this embodiment, a swing cover 375 for closing the handle hole 374 is provided. The swing cover 375 is a plate-like member that is pivotally supported by a shaft provided above the handle hole 374 so as to be swingable and is suspended by its own weight. When the handle hole 374 is used, the handle hole 374 may be exposed by swinging the swing cover 375. By providing the handle hole 374 and the swing cover 375 in this manner, the partition wall 370 can be easily inserted and removed with a simple configuration, and noise from the handle hole 374 can be prevented.

  As shown in FIG. 4, the lower right corner and the lower left corner 376 of the partition wall 370 are rounded. In the present embodiment, R chamfering is performed with a somewhat large radius so as not to hinder the insertion and removal of the partition wall 370 in the left-right direction. That is, for example, when the partition wall 370 is inserted from left to right, even if the partition wall 370 is slightly lowered to the right, the right corner 376 is less likely to be caught in a drain hole 383 (described later) of the guide rail 380. The corner 376 has an R chamfer. The same applies to the left corner 376.

  In the partition wall 370, the lower end 371 and the upper end 372 are folded back on the rear surface of the partition wall 370. The protruding portion 373 protrudes toward the rear of the partition wall 370. The swing cover 375 is provided on the rear surface of the partition wall 370. That is, there is no portion protruding forward on the front surface of the partition wall 370. By doing in this way, when the partition wall 370 attached to the rear surface of the building cover support member 160 is guided by the guide rail 380 and inserted / removed in the left / right direction, there is no portion that interferes with the rear surface of the building cover support member 160. Thereby, the partition 370 becomes easy to insert / extract.

  The guide rail 380 is provided on the rear surface of the front guide plate 381 and the front guide plate 381 erected so as to extend in a substantially vertical direction in front of the partition wall 370, and extends rearward and obliquely upward. And a rear guide plate 382. As shown in FIGS. 4 and 5, the rear guide plate 382 is provided with a drain hole 383 for discharging rainwater, dust, or the like that has entered the cooler chamber 126. 5 is a cross-sectional view taken along line VV in FIG. As shown in FIG. 5, the guide rail 380 is configured such that the rear surface of the front guide plate 381 comes into contact with the front surface in the vicinity of the lower end 371 of the partition wall 370, and the rear guide plate 382 from the lower rear side of the lower end 371 of the partition wall 370 is folded. Abut.

  That is, in the guide rail 380, the front guide plate 381 and the rear guide plate 382 form a receiving portion that supports the partition wall 370 from below, and the guide portion when the partition wall 370 is inserted and removed in the left-right direction. It is configured. When the partition 370 is attached or detached for inspection of the engine 301 or the like, the partition 370 is supported from below by the guide rail 380 and guided in the left-right direction while being restricted from moving in the front-rear direction. Becomes easy.

  When the partition wall 370 is removed, the building cover 130 is opened outward with the upper hinge as a center and is held open by a gas spring (not shown). Then, the bolt 391 that fixes the partition wall 370 is removed, and the partition wall 370 is pulled out to the right side or the left side while being supported and guided by the guide rail 380. When the partition 370 is attached, it may be attached by a procedure reverse to the procedure of removing the partition 370 described above.

  As shown in FIG. 5, the drain hole 383 is provided below the lower end 371 of the partition 370 supported from below by the front guide plate 381 and the rear guide plate 382. Thus, the lower end 371 of the partition wall 370 is not caught in the drain hole 383 when the partition wall 370 is inserted and removed in the left-right direction, so that the partition wall 370 can be easily inserted and removed. Further, due to the presence of the drain hole 383, dust, earth and sand, water, etc. accumulated between the front guide plate 381 and the rear guide plate 382 can be dropped downward from the drain hole 383. Accordingly, it is possible to suppress the resistance from being increased due to dust or earth and sand accumulated between the front guide plate 381 and the rear guide plate 382 when the partition wall 370 is inserted and removed in the left-right direction, which is difficult to insert and remove.

---- Modified example ---
(1) In the above description, the upper partition wall 360 and the lower partition wall 370 are provided, and the lower partition wall 370 is configured to be guided and supported by the guide rail 380. It is not limited to. For example, a guide rail similar to the guide rail 380 may be provided for the upper partition wall 360 in the same manner. The upper partition 360 may have the same configuration as the lower partition 370.

(2) In the above description, the partition is vertically divided into two, but the present invention is not limited to this. For example, one partition may be used. In this case, this single partition may be configured similarly to the lower partition 370 described above. The single partition may be configured to be guided and supported by a guide rail similar to the guide rail 380 described above. Further, for example, the partition may be divided into three or more in the vertical direction.

(3) In the above description, the lower end 371 and the upper end 372 of the partition wall 370 are configured to be folded, but the present invention is not limited to this. For example, if the strength of the partition wall 370 against vibration is sufficient, the folding may be provided only at the lower end 371.

(4) In the above description, the partition wall 370 is provided with, for example, three protrusions 373 extending in the vertical direction, but the present invention is not limited to this. For example, depending on the strength of the partition wall 370 against vibration, the protrusion 373 may not be provided, and may be provided at one place, at two places, or at four places or more. Further, the projecting portion 373 may extend in a direction other than the vertical direction, for example, in the left-right direction, or may extend in an oblique direction.

(5) In the above description, the guide rail 380 is provided on the rear surface of the front guide plate 381 that is erected so as to extend in the substantially vertical direction in front of the partition wall 370 and the rear surface of the front guide plate 381. The rear guide plate 382 extends obliquely upward, but the present invention is not limited to this. For example, the front guide plate 381 may be configured to extend obliquely upward in the front direction, and the rear guide plate 382 is erected so as to extend in a substantially vertical direction behind the partition wall 370. Also good. Further, the front guide plate 381 may extend obliquely upward in the front direction, and the rear guide plate 382 may extend upward in the diagonal direction. In addition, the rear guide plate 381 is erected so as to extend in a substantially vertical direction in front of the partition wall 370, and the lower guide is horizontally bent toward the front so as to have a substantially L-shaped cross section. The plate 382 may be attached to the rear surface of the front guide plate 381, and may be configured to receive the lower end of the partition wall 370 on the upper surface of the horizontal portion of the rear guide plate 382.
(6) The above-described embodiments and modifications may be combined.

  The present invention is not limited to the above-described embodiment, and a machine room provided in the rear body of the wheel loader, a cooler room provided in the rear body of the wheel loader behind the machine room, and And a partition between the machine room and the cooler room, at least a part of which includes a plate-like partition wall that can be inserted and removed in the left-right direction of the wheel loader, and a guide that guides the partition wall inserted and removed in the left-right direction of the wheel loader The wheel loader of various structures characterized by this is included.

DESCRIPTION OF SYMBOLS 100 Wheel loader 120 Rear vehicle body 122 Machine room (engine room) 124 Counterweight 126 Cooler room 130 Building cover 132 Building cover for cooler 160 Building cover support member 291 Radiator 297 Air cooling fan unit 360, 370 Partition 371 Lower end 373 Projection 374 Handle hole 375 Swing cover 380 Guide rail 381 Front guide plate 382 Rear guide plate 383 Drain hole

Claims (4)

A machine room provided in the rear body of the wheel loader;
A cooler chamber provided in a rear body of the wheel loader behind the machine chamber;
A partition between the machine room and the cooler room, at least a part of which is a plate-like partition wall that can be inserted and removed in the left-right direction of the wheel loader;
A wheel loader comprising: a guide for guiding a partition wall inserted and removed in the left-right direction of the wheel loader. The wheel loader according to claim 1,
The guide is before SL wheel loader, characterized in that the guide rails for supporting the partition wall from below as well as guiding the barrier ribs insertion in the lateral direction of the wheel loader. The wheel loader according to claim 2,
The lower end of the partition wall is folded upward,
The wheel loader, wherein the guide rail is provided with a water drain hole below a position where the guide rail contacts the lower end of the partition when the partition is guided. In the wheel loader according to any one of claims 1 to 3,
The partition wall, wheel loader, characterized in Rukoto is divided into two or more in the vertical direction.

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