JP2023104789A - work vehicle - Google Patents

Abstract

To provide a work vehicle provided with an oil pan allowing space-saving as well as attachment/detachment to be repeatedly and easily carried out.SOLUTION: A work vehicle 1 according to the present invention is provided with a vehicle body 10, a work device 16 driven through hydraulic oil pressure, a hydraulic pump, and an engine 18 driving the hydraulic pump. The engine 18 has a mount 44 attaching the same on the vehicle body 10 and a filter attachment part 42 on which a detachable oil filter 40 is attached, and an oil pan 50 is detachably attached on the mount 44 at a position directly below the oil filter 40 attached on the filter attachment part 42.SELECTED DRAWING: Figure 3

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a working vehicle equipped with hydraulically operated working equipment.

As examples of working vehicles, excavators, loaders, carriers, etc., which are provided with a traveling device having crawlers or tires, a vehicle body provided on the traveling device, and a working device provided on the vehicle body and operated by hydraulic pressure, are conventionally known. ing.

A hydraulic pump that generates hydraulic pressure and a drive source that drives the hydraulic pump are mounted on the work vehicle. For example, when an engine (such as a diesel engine) is used as the drive source, maintenance work is required to periodically replace oil, an oil filter, and the like.

JP-A-2002-054177 JP 2019-007255 A

In general oil filter replacement work, when the oil filter is rotated and loosened from the filter mounting portion, there is a problem that a small amount of oil drips due to its structure. To address this problem, for example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2002-054177) discloses that a tray that simultaneously accommodates the dripping oil and the removed oil filter is installed on the undercover of the vehicle body, and the oil and the oil are A configuration is disclosed in which the filter is collected together with the tray. However, in the case of this configuration, a large tray is installed on the undercover so that the oil filter can be accommodated together with the oil. . Furthermore, there is a problem that the operator must enter the lower part of the vehicle body and remove the inspection lid of the undercover to perform the work, which is dangerous and takes time and effort.

In response to the above problem, Patent Document 2 (Japanese Patent Application Laid-Open No. 2019-007255) discloses a configuration in which an oil receiver is installed at a position above a mount that fixes the engine to the vehicle body in order to save space. It is However, in the case of this configuration, the oil receiver is fixed by also using the fastening member for fixing the mount to the vehicle body, and the structure is not designed to be repeatedly attached and detached. Therefore, as the vehicle is used for a longer period of time, dirt such as earth and sand accumulates in the oil receiver, and as the number of times the oil filter is replaced increases, dripped oil accumulates. was there.

In other words, if the oil receiver is in such a state, even if the oil filter is not properly attached to the filter mounting portion, or if the oil filter is loosened from the filter mounting portion, the oil Even if a large amount of oil leaks from between the filter and the filter mounting portion and adheres to the oil pan, it is extremely difficult to find it. As a result, the vehicle continues to operate with a smaller amount of oil than specified, which may eventually lead to major troubles such as engine blow.

The present invention has been made in view of the above circumstances, and is equipped with an oil receiver that can be repeatedly and easily attached and detached, can reliably collect oil that drips when the oil filter is replaced, and realizes space saving. The purpose is to provide a working vehicle.

The present invention solves the above problems by means of solutions as described below.

A work vehicle according to the present invention is a work vehicle that includes a vehicle body, a hydraulically operated work device, a hydraulic pump, and an engine that drives the hydraulic pump, wherein the engine is fixed to the vehicle body. and a filter mounting portion for mounting a detachable oil filter. An oil receiver is detachably attached to the mount at a position immediately below the oil filter mounted on the filter mounting portion. Required to be installed.

According to the present invention, it is possible to realize a work vehicle provided with an oil pan that can be repeatedly and easily detachably mounted on a mount. As a result, the space around the engine can be saved, and the oil that drips when the oil filter is replaced can be reliably collected without leaking or scattering. In addition, the oil receiver can be removed for cleaning or replacement depending on the dirtiness. Therefore, even in the unlikely event that oil leaks from the filter mounting part where the oil filter is mounted, the state of oil adhering to the oil receiver can be quickly detected, preventing serious engine trouble. can be prevented.

1 is a perspective view showing an example of a working vehicle according to an embodiment of the present invention; FIG. FIG. 2 is a perspective view showing an example of an engine room in the work vehicle of FIG. 1; FIG. 3 is an enlarged view of part III of FIG. 2; FIG. 2 is a plan view showing an example of a filter mounting portion, an oil filter, an oil receiver, and a mount in the work vehicle of FIG. 1; FIG. 2 is a perspective view showing an example of an oil receiver in the work vehicle of FIG. 1; FIG. 5 is a sectional view taken along the line VI-VI of FIG. 4; 2 is a perspective view showing another example of an oil receiver in the work vehicle of FIG. 1; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram (perspective view from above the left rear portion) showing an example of a work vehicle 1 according to the present embodiment. For convenience of explanation, arrows in the drawings may indicate up-down, left-right, and front-rear directions. Further, in all the drawings for explaining the embodiments, members having the same functions are denoted by the same reference numerals, and repeated description thereof may be omitted.

First, the overall configuration of the working vehicle 1 will be described. Here, as the work vehicle 1, an excavator that travels with tires will be described as an example, but the work vehicle 1 is not limited to this.

As shown in FIG. 1, the working vehicle 1 includes a traveling device 12 having left and right tires 30, a vehicle body 10 rotatably provided on the traveling device 12, and a working device ( As an example, a shovel device) 16 is provided. Further, the vehicle body 10 is provided with a control room (cabin or canopy) 14 in which an operator (operator) rides in the central portion to operate the traveling device 12, the working device 16, etc., and an engine serving as a driving source is provided in the rear portion. An engine room 20 in which 18 is accommodated is provided. However, the traveling device 12 may be configured to include crawlers instead of the tires 30 (not shown). In addition, it may be configured to include an electric motor driven by a battery together with the engine 18 as a drive source (not shown).

Next, the shovel device 16, which is an example of a working device, has a boom 22 and an arm 24 which are pivotally connected to the front portion of the vehicle body 10 through a boom bracket (not shown) so as to be capable of swinging vertically. It may be configured without the boom bracket). Further, an attachment (for example, a bucket, etc.) 26 is pivotally connected to the tip of the arm 24 so as to be able to swing up and down. These boom 22, arm 24 and attachment 26 are driven by hydraulic cylinders 32, 34 and 36, respectively. Devices such as hydraulic pumps (not shown) that generate hydraulic pressure and control valves used in the work equipment and the like are appropriately arranged in an engine room 20 (described later) of the vehicle body 10, under the floor, and the like.

Next, the engine room 20 is provided in the rear portion of the vehicle body 10 (at the rear position of the cockpit 14), and an engine 18 as a drive source and peripheral devices are arranged therein. As an example, the engine 18 is a liquid-cooled diesel engine, but is not limited to this. The traveling device 12 and the work device 16 described above are configured to operate by receiving pressure oil delivered from a hydraulic pump driven by the engine 18 .

Note that other mechanisms (driving mechanism, control mechanism, etc.) for traveling and working in the working vehicle 1 according to the present embodiment are the same as those of a known working vehicle (here, an excavator). is omitted.

Next, the engine 18 and its peripheral configuration, which are characteristic of this embodiment, will be described in detail. FIG. 2 is a schematic view (perspective view from above the left rear portion) of the work vehicle 1 with the cover 28 of the engine room 20 opened. Moreover, FIG. 3 is an enlarged view of the III section in FIG.

First, the engine 18 has a mount 44 for fixing to the vehicle body 10 with the anti-vibration rubber 70 interposed therebetween, and a filter mounting portion 42 for mounting the detachable oil filter 40 thereon. Here, the mount 44 is disposed with its plate surface horizontal at the center when viewed from a direction perpendicular to the crankshaft (not shown) of the engine 18 (in this embodiment, a direction parallel to the longitudinal direction of the vehicle body 10). and wall portions 48 erected on both sides (both ends in the left-right direction) of the flat plate portion 46, and are formed in a U-shape opening upward (see FIG. 3). . The direction in which the oil filter 40 is attached to and detached from the filter mounting portion 42 (the direction along the axis C of the oil filter 40) is parallel to the crankshaft (in this embodiment, the direction parallel to the lateral direction of the vehicle body 10). is configured to be

An oil receiver 50 is detachably attached to the mount 44 . The oil receiver 50 is a member that receives and collects oil dripping from the oil filter 40 and the filter mounting portion 42 when the oil filter 40 is removed from the filter mounting portion 42 .

In this embodiment, the oil receiver 50 must include a position directly below the oil filter 40 attached to the filter mounting portion 42 (at least a position directly below the boundary portion between the filter mounting portion 42 and the oil filter 40). ) is mounted on the mount 44 so that the receiving plate portion 52 (described later) is disposed thereon. That is, as shown in the plan view of FIG. 4, the pan portion 52 of the oil pan 50 and the flat plate portion 46 of the mount 44 are arranged at the same position in plan view. According to this, the oil receiver 50 can be installed at a position above the mount 44 to effectively utilize the area, and space saving can be realized in the arrangement of equipment around the engine 18 .

As an example of the configuration of the oil receiver 50, as shown in the perspective view of FIG. and a peripheral wall portion 60 (comprised of a front wall portion 62, a rear wall portion 64, and a side wall portion 66) surrounding the saucer portion 52. As shown in FIG. A fixing member (for example, a bolt or the like) 68 for fixing the oil receiver 50 to the mount 44 is attached to a center portion 62a of the front wall portion 62 and an end portion 66a formed by extending and bending one end of the side wall portion 66. Penetration holes 62b and 66b are provided. The oil receiver 50 is used by connecting a drain hose 56 made of a resin material (for example, vinyl chloride resin) to the lower end of the drain pipe 54 while being fixed to the mount 44 . As an example, the oil receiver 50 is formed using a metal material (for example, a rolled steel plate or the like), but is not limited to this.

Here, as shown in the cross-sectional view of FIG. 6 (cross-sectional view taken along the line VI-VI in FIG. 4), the drain pipe 54 of the oil receiver 50 is inserted through the mount 44 (specifically, the flat plate portion 46). A hole 46a is provided (instead of the hole 46a, a notch (not shown) may be provided at the end of the flat plate portion 46). According to this configuration, the oil receiver 50 can be positioned at a predetermined mounting position on the mount 44 by inserting the drain pipe 54 through the hole 46a. Since the oil receiver 50 according to the present embodiment has a structure that allows repeated attachment and detachment, it is possible to realize a structure that can be easily positioned at a predetermined mounting position, especially when mounting. , the mounting work can be performed easily and in a short time.

At this time, the receiving plate portion 52 is located at a position spaced upward by a predetermined distance from the flat plate portion 46 of the mount 44. It is arranged at a position several mm to several cm above the upper end of the fixing member (bolt in this case) 58 . Moreover, the receiving plate portion 52 is formed in a size that partially or entirely covers the upper end portion of the fixing member 58 in plan view. According to this, it is possible to form the pan 52 in a wider and deeper shape. (to the outside of the rear side, where it is easy to do)), it is possible to collect it reliably so as not to leak and scatter.

As described above, the oil pan of the conventional work vehicle disclosed in Patent Document 1, for example, has a configuration in which the oil pan itself cannot be visually checked unless the inspection lid of the undercover of the vehicle body is removed. On the other hand, the oil receiver of the conventional work vehicle disclosed in Patent Document 2 has a structure that allows easy visual confirmation. However, as long as it is a mechanical part that is not a welded structure, it is natural to have a structure that can be attached to a vehicle body or the like using bolts or the like, but it is not a structure that is premised on being repeatedly attached and detached depending on the situation. Therefore, as the vehicle is used for a longer period of time, dirt such as earth and sand adheres to it, and as the number of times the oil filter of the engine is replaced increases, it is normal for a considerable amount of dripping oil to adhere to the oil filter. there were. Therefore, if the oil filter is not properly attached to the filter mounting portion, or if the oil filter is loosened from the filter mounting portion, the oil will not leak from between the oil filter and the filter mounting portion. Even if the oil leaks out and adheres to the oil receiver in large amounts, there is a problem that it is extremely difficult to find it.

In order to solve such a problem, according to the above-described configuration according to the present embodiment, while the mount 44 is fixed to the vehicle body 10, the oil receiver 50 can be adjusted according to the dirtiness of the oil receiver 50 and the like. can be easily attached and detached repeatedly. That is, since the oil pan 50 can be removed and cleaned or replaced easily, even if oil leaks from between the oil filter 40 and the filter mounting portion 42, the oil will not flow into the oil pan 50. It is possible to quickly discover the adhered state. Therefore, it is possible to prevent serious troubles such as engine blow.

From the viewpoint of obtaining the above effects, at least the upper surface 52a of the oil receiver 50 is formed on the metal surface of the forming material, the plated surface, or the surface coated with light-colored paint such as white or yellow. It is more preferable to set it as the structure. According to this configuration, even in the unlikely event that oil leaks from the filter mounting portion 42 for mounting the oil filter 40, the state in which the oil adheres to the oil receiver 50 (here, the receiving pan portion 52) is further prevented. This is because the effect of facilitating discovery is obtained.

Next, another embodiment of the oil receiver 50 will be described. First, regarding the oil receiver 50, the configuration in which the side wall portions 66 are arranged at positions spaced inward from the inner surfaces of the left and right wall portions 48 of the mount 44 by a predetermined distance is the same as in the above-described embodiment. On the other hand, as a different configuration, as shown in FIG. 7, a flange portion 66c extending toward the wall portion 48 of the adjacent mount 44 is provided at the upper end portion of one side wall portion 66 (both sides are provided with a flange portion 66c). A configuration (not shown) in which a collar portion is arranged at the upper end portion of the side wall portion 66 may be employed).

The flange portion 66c is configured to cover the gap portion 72 between the wall portion 48 of the mount 44 and the side wall portion 66 of the oil receiver 50 so as not to be exposed in plan view. As an example, the length of the flange portion 66c in the front-rear direction is substantially the same as or slightly shorter than the length of the gap portion 72 in the front-rear direction, but the present invention is not limited to this. At least the position where the axis (extension) C of the oil filter 40 attached to the filter attachment portion 42 intersects the wall portion 48 of the mount 44 and the surrounding area are preferably covered with the flange portion 66c. be. The reason for this is that if the gap 72 between the wall portion 48 of the mount 44 and the side wall portion 66 of the oil receiver 50 is covered with the flange portion 66c, when the oil filter 40 is removed from the filter mounting portion 42, This is because it is possible to prevent the oil dripping from the oil filter 40 from entering the gap 72 on the axis C, which is the flow line of the oil filter 40 (that is, the attachment/detachment direction). If oil enters the gap 72 , the oil flows down the flat plate portion 46 of the mount 44 and hangs on (adheres to) the anti-vibration rubber 70 , causing deterioration of the anti-vibration rubber 70 . becomes. However, according to the above configuration, it is possible to prevent the oil from entering the gap portion 72 and avoid the adhesion of the oil, which causes deterioration of the rubber vibration isolator 70 .

As described above, in the work vehicle according to the present invention, it is possible to realize a configuration including an oil receiver that can be repeatedly and easily attached to and detached from the mount. As a result, the area above the mount can be effectively used, and the space around the engine can be reduced. At the same time, it is possible to reliably collect the oil that drips when replacing the oil filter without leaking or scattering. Become. In addition, the oil receiver can be frequently removed for cleaning or replacement depending on the degree of contamination, etc., without removing the mount and the fixing member of the mount. Therefore, even in the unlikely event that oil leaks from the filter mounting portion where the oil filter is mounted, it is possible to quickly discover the state of oil adhering to the oil receiver, which can lead to serious problems such as engine blow. can be prevented from occurring.

It should be noted that the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the present invention. In particular, an excavator has been described as an example of a working vehicle, but the present invention is not limited to this, and it goes without saying that the present invention can be similarly applied to other working vehicles such as loaders and carriers, for example. .

1 work vehicle 10 vehicle body 12 travel device 16 work device 18 engine 20 engine room 40 oil filter 42 filter mounting portion 44 mount 50 oil receiver 52 saucer portion 54 drain pipe 66 side wall portion 70 anti-vibration rubber

Claims (4)

A working vehicle comprising a vehicle body, a hydraulically operated working device, a hydraulic pump, and an engine for driving the hydraulic pump,
The engine has a mount for fixing to the vehicle body and a filter mounting portion for mounting a removable oil filter,
A work vehicle, wherein an oil receiver is detachably attached to the mount at a position immediately below the oil filter attached to the filter attachment portion. The oil receiver has a drain pipe that extends downward from the bottom surface and communicates with the saucer,
The mount has a hole or a notch through which the drain pipe of the oil receiver is inserted,
2. The work vehicle according to claim 1, wherein the drain pipe is inserted through the hole or the notch so that the oil receiver is positioned at a predetermined mounting position of the mount. . The mount has a flat plate portion in the center and wall portions erected on both sides thereof when viewed from a direction perpendicular to the crankshaft of the engine,
The oil receptacle has a side wall forming a part of a peripheral wall surrounding the receptacle at a position separated by a predetermined distance from the inner surface of the wall of each of the mounts, and the mount is provided at the upper end of the side wall. has a collar extending toward the wall of
3. A portion between the wall portion of the mount and the side wall portion of the oil receiver is covered with the flange portion so as not to be exposed in plan view. work vehicle. 4. The oil receiver according to claim 2, wherein at least the upper surface of the saucer portion is formed on a metal surface of a forming material, a plated surface, or a light-colored paint surface. work vehicle.

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