JP2018135702A - Work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work vehicle capable of collectively arranging electrical components and batteries close to each other.SOLUTION: A partition plate 70 for partitioning an internal space of a right arm post 8R vertically is provided, and an electrical component arrangement space 75 is formed inside the right arm post 8R. A fuse relay box 93, controllers 96 and 97, a resistor 112, a relay 113 and the like are disposed in an upper portion within the electrical component arrangement space 75, and a battery 80 is disposed thereunder. On an inner wall portion of the right arm post 8R, an inner wall opening portion facing an electrical component in the frame inner space 75 is provided. An outer wall opening portion 66 facing the battery 80 in the frame inner space 75 is provided in an outer wall portion 52 of the right arm post 8R.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a work vehicle equipped with electrical components such as a controller, a fuse, and a relay.

  As an example of a working vehicle, there is known a skid steer loader in which traveling devices made of tires or crawlers are provided on the left and right sides of a vehicle body, and the traveling direction is changed by changing the operating speeds of the left and right traveling devices. Such a skid steer loader is provided with an arm that can swing up and down in the vehicle body, and by swinging the arm up and down, an attachment (working device) that is detachably attached to the tip of the arm is moved up and down. It is configured to do work. Such a working vehicle is known to have a storage space for electrical components under the driver's seat and to store electrical components such as a controller and a fuse box in the storage space ( For example, see Patent Document 1 below).

Japanese Patent No. 4606975

  In recent years, computerization of work vehicles has progressed, and along with this, the number of electrical components equipped on the vehicles has also increased. For this reason, it has become difficult to arrange electrical components together under a driver's seat where space is limited, and the electrical components are also distributed and arranged in various places. As the number of electrical component placement locations increases, workability when maintaining each electrical component is degraded. In addition, the battery for supplying electricity to the electrical component and the electrical component are installed apart from each other, and there is a problem that the harness connecting the battery and the electrical component becomes thick and long, resulting in an increase in cost.

  This invention is made | formed in view of such a situation, and it aims at providing the working vehicle which can arrange | position collectively an electrical component and a battery in the position close | similar to each other.

  In order to achieve the above object, a working vehicle according to the present invention has an arm pivot having a working arm member (for example, the arm 21 in the embodiment) connected to a base end portion so as to be swingable and having an inner space in the frame. A tie frame (for example, the right arm post 8R in the embodiment), a partition plate provided in the frame inner space and partitioning the frame inner space up and down, and electrical components disposed below the partition plate in the frame inner space (For example, the controllers 96 and 97 and the fuse / relay box 93 in the embodiment), a battery disposed below the electrical component in the space in the frame and electrically connected to the electrical component, and the arm pivot An inner wall opening facing the electrical component in the inner space of the frame, formed on the inner wall of the binding frame, and a small number of the inner wall opening. A cover plate covering the electrical component facing the portion of Kutomo said frame space (e.g., opening the cover 63 in the embodiment) and, characterized in that it is configured with.

  In the working vehicle having the above-described configuration, an outer wall opening formed in an outer wall portion of the arm pivot frame and facing the battery in the space in the frame, and a cover member that covers the outer wall opening (for example, implementation) A lid plate 68) in the form.

  In the work vehicle having the above-described configuration, an annular inner wall opening reinforcing plate fixed to the inner wall along the peripheral edge of the inner wall opening, and a peripheral edge of the outer wall opening. And an annular outer wall opening reinforcing plate fixed in an overlapping manner on the outer wall portion.

  According to the working vehicle according to the present invention configured as described above, a partition plate that vertically partitions the space in the frame of the arm pivoting frame, and an electrical component disposed below the partition plate in the space in the frame, A battery electrically connected to the electrical component disposed below the electrical component in the frame inner space, and an inner wall opening facing the electrical component in the frame inner space formed on the inner wall portion of the arm pivot frame. And a cover plate that covers at least a portion of the inner wall opening facing the electrical component in the frame inner space. Therefore, it is possible to arrange electrical components in the space in the frame, and it is possible to perform the mounting and maintenance of the electrical components from the inner side wall opening, thereby improving the workability. .

  In addition, since the electrical component and the battery can be arranged close to each other vertically in the space in the frame, the harness connecting the battery and the electrical component can be configured to be thin and short, and the cost of the harness can be reduced. It becomes possible. In addition, the space in the frame is divided up and down by the partition plate, and the electrical components are placed below the partition plate, so water (rain water, water during car wash, etc.) and mud (earth and sand) that have fallen on the partition plate It is possible to prevent the air from entering the space in the frame and adhering to the electrical component. For this reason, it is not necessary to cover and protect each electrical component with a waterproof case or the like. In addition, by installing a cover plate in the inner wall opening, it is possible to prevent water and mud from entering the space in the frame from the portion facing the electrical component in the inner wall opening. Further, the arm pivot frame can be reinforced by the partition plate.

  The work vehicle according to the present invention includes an outer wall opening formed on the outer wall portion of the arm pivot frame and facing the battery in the frame inner space, and a cover member that covers the outer wall opening. A configuration is preferable. With such a configuration, battery replacement, maintenance, and the like can be performed from the outer wall opening, so that these workability can be improved. In addition, by providing a cover member that covers the outer wall opening, it is possible to prevent water and mud from entering the space in the frame from the outer wall opening.

  Further, in the work vehicle according to the present invention described above, the annular inner wall opening reinforcing plate fixed to the inner wall along the peripheral edge of the inner wall opening, and the peripheral edge of the outer wall opening. And an annular outer wall opening reinforcing plate fixed to the outer wall portion in a stacked manner. With such a configuration, the inner wall opening and the outer wall opening can be reinforced, so that the strength of the arm pivoting frame can be sufficiently secured even if such an opening is provided. Become.

It is the side view which looked at the crawler type skid steer loader to which the present invention is applied from the vehicle right side. It is a front view of the said skid steer loader. It is a top view of the said skid steer loader. It is a rear view of the skid steer loader. It is the perspective view which looked at the frame unit which constitutes the above-mentioned skid steer loader from the vehicles left back. It is the perspective view which looked at the said frame unit from the vehicle right back. It is a top view of the said frame unit. It is a rear view of the said frame unit. It is a cross-sectional schematic diagram which simplifies and shows a part of cross section along the AA line of FIG. 8 of the said frame unit. It is a cross-sectional schematic diagram which simplifies and shows a part of cross section along the BB line of FIG. 8 of the said frame unit. It is a cross-sectional schematic diagram which shows the state which attached the opening part cover to the inner wall opening part shown in FIG. It is a perspective view which shows the positional relationship of the electrical equipment arrange | positioned in the right arm post which comprises the said frame unit, and a battery.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, an example in which the present invention is applied to a crawler skid steer loader (hereinafter referred to as a crawler loader) in which a bucket is attached to the tip of an arm will be described. First, the overall configuration of the crawler loader 1 will be described with reference to FIGS.

  The crawler loader 1 includes, as shown in FIGS. 1 to 4, a pair of left and right traveling devices 5 each having an endless crawler belt 3, a vehicle body frame 9 on which these traveling devices 5 are attached to the left and right, A loader device 20 attached to the vehicle body frame 9 and an operator cabin 11 provided at the upper center of the vehicle body frame 9 are configured. Arm posts 8 (arm attachment portions) for attaching arms 21 (to be described later) of the loader device 20 are provided on the left and right sides of the rear portion of the vehicle body frame 9, respectively. The left and right traveling devices 5 and the vehicle body frame 9 are collectively referred to as “vehicle 10”, and the left and right arm posts 8 and the vehicle body frame 9 are collectively referred to as “frame unit 12”. When the left and right arm posts 8 are distinguished, they are referred to as “left arm post 8L” and “right arm post 8R”.

  The operator cabin 11 is formed in a substantially rectangular box shape that forms an operation room in which an operator (operator) can board, and a front door 11a (glass door) that can be opened and closed is provided on the front side. In the operator cabin 11, an operator seat on which the operator is seated facing forward, an operation lever (not shown) for operating the left and right traveling devices 5 and the loader device 20, and the like are disposed. .

  The loader device 20 includes an arm 21 disposed so as to surround the left and right and the front of the operator cabin 11, a left and right arm post 8 (vehicle body frame 9), and a pair of left and right arm cylinders 23 attached across the arm 21. And a bucket 29 attached to the front end portion of the arm 21 via a bracket 29a. The left and right arm posts 8 are provided with a plurality of pivot points for attaching the arms 21 and the left and right arm cylinders 23.

  The bracket 29a is connected to the tip of the arm 21 so as to be swingable up and down, and the bucket 29 is detachably attached to the bracket 29a. A pair of left and right bucket cylinders 28 are attached across the bucket 29 (bracket 29 a) and the arm 21. The bucket 29 is configured to swing up and down with respect to the arm 21 by expanding and contracting the left and right bucket cylinders 28.

When the operator sits on the operator seat and operates the operation lever, the crawler loader 1 drives the left and right traveling devices 5 to move the vehicle 10 or moves the left and right arm cylinders according to the operation of the operation lever. 23 is expanded and contracted to swing the arm 21 up and down with respect to the vehicle body frame 9, and the left and right bucket cylinders 28 are expanded and contracted to operate the bucket 2.
9 is configured to swing up and down with respect to the arm 21.

  A diesel engine EG (hereinafter referred to as engine EG) is provided at the rear of the vehicle body frame 9 (the rear position of the operator cabin 11). The left and right traveling devices 5, the left and right arm cylinders 23, and the left and right bucket cylinders 28 are configured to receive hydraulic oil from a hydraulic pump driven by the engine EG. The engine EG is provided such that the left and right sides are covered by the side frames (arm posts 8) of the body frame 9, and the upper and rear sides are covered by the engine cover 15 and the rear door 16, respectively.

  The engine cover 15 is provided so as to be able to open and close by swinging up and down with respect to the vehicle body frame 9 using a pair of left and right hinge mechanisms (not shown) provided at the front end. The engine cover 15 is normally held in a closed state with respect to the vehicle body frame 9 by a cover lock mechanism 31. The rear door 16 is provided so that it can be opened and closed laterally with respect to the vehicle body frame 9 using a pair of upper and lower hinge mechanisms (not shown) provided at the left end. The rear door 16 is normally held in a closed state with respect to the vehicle body frame 9 by a door lock mechanism (not shown).

  The crawler loader 1 is equipped with various electrical components. Below, the electrical equipment with which the crawler loader 1 is equipped is divided into the specific placement electrical equipment and the arbitrarily placed electrical equipment for convenience. The specific arrangement electrical component refers to an electrical component that needs to be arranged at a specific location, such as an illumination lamp, a display panel, or a wiper device. The arbitrarily arranged electrical components are electrical components (controllers 96 and 97, relays 92, fuses 91, which will be described later) for controlling electricity (current, voltage) supplied from the power supply device (battery 80, which will be described later) to the specified electrical components. , Etc.) means an electrical component that can be placed at any place on the wiring (the harnesses 101 and 102 described later) for connecting the power supply device and the specific electrical component.

  In the crawler loader 1, most of the arbitrarily arranged electrical components are arranged in the right arm post 8R. Hereinafter, the detailed configuration of the right arm post 8R and the layout of the arbitrarily arranged electrical component will be described with reference to FIGS. The right arm post 8R is disposed on the vehicle inner side (the side facing the left arm post 8L), the outer wall 52 disposed on the vehicle right outer side, and the vehicle rear side. A rear wall 53 (formed by bending the rear end of the outer wall 52) and a bottom wall 54 (see FIG. 9) disposed at the bottom of the right arm post 8R. It is configured.

  The lower end portions of the inner wall portion 51 and the outer wall portion 52 are fixed to the right edge portion 9a of the vehicle body frame 9 (a portion extending toward the vehicle front side while curving from the vehicle rear side) by welding or the like. The rear end portion 51 is fixed to the back wall portion 53 by welding or the like. Further, the peripheral edge portion of the bottom wall portion 54 is fixed to the inner wall portion 51, the outer wall portion 52, the rear wall portion 53, and the right edge portion 9a of the vehicle body frame 9 by welding or the like. An arm bearing portion 55 to which a base end portion of the arm 21 (see FIG. 1) is pivotally attached is attached to the upper end portion of the right arm post 8R, and a base end portion of the arm cylinder 23 is provided below the arm bearing portion 55. A cylinder bearing portion 56 is attached to which is pivoted. Further, a reinforcing member 57 for increasing the strength of the right arm post 8R is attached in the vicinity of the arm bearing portion 55 and the cylinder bearing portion 56.

As shown in FIGS. 5 and 10, the inner wall portion 51 is formed with an inner wall opening 61 that faces an arbitrarily arranged electrical component (details will be described later) disposed in the right arm post 8R. An annular reinforcing plate (doubling plate) 62 is fixed to the inner wall opening 51 from the right arm post 8R so as to overlap the peripheral edge of the inner wall opening 61 (in FIG. 10, the outer edge shape of the reinforcing plate 62 is the same). This is shown in broken lines). The inner wall 51 is provided with an opening cover 63 that covers the upper portion of the inner wall opening 61 (the portion facing the arbitrarily arranged electrical component disposed in the right arm post 8R) via a plurality of thumb screws 64. And can be attached detachably. Further, a punch hole 58 for reducing the weight is formed in the lower portion of the inner wall opening 61 (if earth or sand or dust accumulates in the lower portion of the right arm post 8R, it can be discharged from here). Has been. On the other hand, as shown in FIGS. 6 and 9, an outer wall opening 66 is formed in the outer wall 52 so as to face the battery 80 disposed in the right arm post 8 </ b> R. An annular reinforcing plate (doubling plate) 67 is fixed to the outer peripheral portion 52 from the inside of the right arm post 8R so as to overlap the peripheral edge portion. A lid plate 68 (see FIG. 1) covering the entire outer wall opening 66 is detachably attached to the outer wall 52 via a plurality of bolts 69.

  Inside the right arm post 8R, as shown in FIG. 9, a partition plate 70 that partitions the internal space of the right arm post 8R up and down is provided. The partition plate 70 includes a top plate portion 71 arranged substantially horizontally, and a front plate portion 72 that extends downward from the front end portion of the top plate portion 71 and further extends forward while being curved. Yes. In the example shown in FIG. 9, the partition plate 70 is configured by a single plate material, but the partition plate 70 may be configured by a plurality of plate materials joined to each other. The peripheral edge portion of the partition plate 70 is fixed to the inner wall portion 51, the outer wall portion 52, the rear wall portion 53, and the right edge portion 9a of the vehicle body frame 9 without any gap by fillet welding or the like. A battery mounting plate 81 on which the battery 80 is mounted is fixed at a position between the partition plate 70 and the bottom wall portion 54 in the right arm post 8R. As shown in FIG. 8, one end of the battery mounting plate 81 extends from the right arm post 8R toward the vehicle inward side, and the battery 80 has one end (the side on which the positive electrode 82 is disposed). ) Is projected from the right arm post 8R toward the vehicle inward side.

  By providing the partition plate 70 as described above, in the right arm post 8R, a space separated from the space above the partition plate 70 by the partition plate 70 (hereinafter referred to as “electrical component arrangement space 75”). ) Is formed. In the crawler loader 1, most of the electrical components (arranged electrical components) are collectively arranged in the electrical component arrangement space 75 (particularly, in the space above the battery 80). Specifically, as shown in FIGS. 9 and 12, a plurality of fuses 91 and a plurality of relays 92 are respectively provided in the center of the upper part of the electrical component arrangement space 75 (only part of them are shown in FIG. 12). A fuse / relay box 93 is attached via a bracket member 94. In addition, two controllers 96 and 97 are attached via bracket members 98 (shown in FIG. 12) to the front side of the vehicle where the fuse / relay box 93 is attached.

  As shown in FIG. 12, the fuse / relay box 93 and the controllers 96 and 97 are appropriately connected to the positive electrode 82 of the battery 80 via the harness 101 and are mounted on the crawler loader 1 via the harness 102. It is connected to various specific arrangement electrical components (not shown). Further, as shown in FIG. 9, a body ground 111 is provided on the rear wall 53 in the electrical component arrangement space 75, and this body ground 111 is connected to the negative electrode 83 of the battery 80 via the harness 103. It is connected. As shown in FIG. 12, a harness 104 is connected to the body ground 111, and this harness 104 is appropriately connected to the fuse / relay box 93 and the controllers 96 and 97. In addition, a plurality of resistors 112 and a plurality of relays 113 are connected to the harness 104.

As described above, in the crawler loader 1, the electrical component placement space 75 is formed inside the right arm post 8 </ b> R, and the arbitrarily placed electrical component (the fuse / relay box 93 and the controller is disposed above the electrical component placement space 75. 96, 97, etc.), and a battery 80 is arranged below it. Therefore, the arbitrarily arranged electrical component and the battery 80 can be arranged close to each other, so that the harness 101 that connects the battery 80 and the arbitrarily arranged electrical component can be configured to be thin and short. In addition, attachment and maintenance of the arbitrarily arranged electrical components can be performed by putting a hand through the inner wall opening 61, and when replacing the battery 80, the battery 80 can be taken in and out from the outer wall opening 66. Since it is possible, these workability is also good.

  Furthermore, since the electrical component placement space 75 is partitioned from the space above the partition plate 70 by the partition plate 70, water, mud, etc. that have fallen on the partition play 70 are contained in the electrical component placement space 75. Therefore, it is possible to prevent adhesion to the fuse / relay box 93 and the controllers 96 and 97. The partition plate 70 also functions as a reinforcing member for the right arm post 8R, and compensates for a decrease in strength of the right arm post 8R due to the formation of the inner wall opening 61 and the outer wall opening 66.

  A water drain hole (not shown) is formed at a position on the right side edge 9 a (see FIG. 9) of the vehicle body frame 9 at the front side of the vehicle with respect to the partition play 70, and is accumulated on the partition play 70. Water or the like is discharged from the drain hole to the outside of the vehicle. Further, as shown in FIGS. 5 and 10, a similar drain hole 59 is also formed in the upper rear portion of the inner wall portion 51. The drain hole 59 is provided at a position where the lower end of the drain hole 59 is substantially level with the upper surface of the partition play 70, and water or the like accumulated on the partition play 70 passes through the drain hole 59 to the inside of the vehicle. And is further discharged to the outside of the vehicle through a bowl-shaped support plate 17 (inclined downward toward the rear of the vehicle) attached to the inner wall portion 51 to support the engine cover 15. The

  Since the outer side wall opening 66 is formed in the outer wall 52, if it is left open, rainwater, mud, etc. can easily enter the right arm post 8R from there. The lid plate 68 covers the entire outer wall opening 66 to prevent intrusion of rainwater or the like from the outer wall opening 66. In addition, in order to improve waterproofness, you may attach a packing member to the back surface side peripheral part of the cover plate 68. FIG. On the other hand, the inner wall opening 61 is formed in the inner wall 51. The space (engine room) on the vehicle inner side where the inner wall opening 61 faces is covered by the engine cover 15 and the rear door 16, so that rainwater or the like can enter the right arm post 8R from the inner wall opening 61. The nature is low. However, when the engine cover 15 or the like is opened, rainwater or the like may enter from the inner side wall opening 61. The opening cover 63 covers the upper portion of the inner wall opening 61 to prevent rainwater or the like from entering the right arm post 8R from being attached to the fuse / relay box 93 or the controllers 96, 97. . Further, by attaching the opening cover 63, it is difficult to see the inside of the right arm post 8R that is cluttered because many electrical components are stored, so that the appearance is also improved. In addition, since the opening part cover 63 is attached to the inner wall part 51 with the thumbscrew 64, it can be attached or detached without using a tool, and the workability | operativity at the time of attachment / detachment of the opening part cover 63 is good.

  As mentioned above, although embodiment of this invention was described, the scope of the present invention is not limited to the above-mentioned embodiment. For example, in the above-described embodiment, the electrical component placement space 75 is formed in the right arm post 8R, but the electrical component placement space is formed in the left arm post 8L, and the fuse / relay box 93 is provided there. Alternatively, controllers 96 and 97, a battery 80, and the like may be disposed. Further, in the above-described embodiment, a part of the battery 80 protrudes from the right arm post 8R, but it may be configured such that the entire battery is accommodated in the right arm post 8R using a small battery. Good. In that case, you may attach the opening part cover of the magnitude | size which covers the whole inner side wall opening part 61. FIG. Moreover, although the case where this invention was applied to the crawler loader 1 was demonstrated in the above-mentioned embodiment, this invention is similarly applied to work vehicles other than the crawler loader, for example, other work vehicles such as a power shovel. It is possible to apply and obtain the same effect.

1 Crawler loader (work vehicle)
8R Right arm post 8L Left arm post 9 Body frame 12 Frame unit 21 Arm 23 Arm cylinder 51 Inner side wall 52 Outer side wall 61 Inner side wall opening 62, 67 Reinforcement plate 63 Opening cover 64 Thumb screw 66 Outer side wall opening 68 Lid plate 70 Partition plate 75 Electrical component arrangement space 80 Battery 91 Fuse 92, 113 Relay 93 Fuse / relay box 96, 97 Controller 101-103 Harness 111 Body ground 112 Resistance

Claims (3)

An arm pivoting frame in which the base end of the working arm member is slidably coupled and has an internal space inside the frame;
A partition plate provided in the space in the frame and partitioning the space in the frame vertically;
Electrical components arranged below the partition plate in the space in the frame;
A battery disposed below the electrical component in the space in the frame and electrically connected to the electrical component;
An inner wall opening formed on an inner wall portion of the arm pivoting frame and facing the electrical component in the space in the frame;
A work vehicle comprising: a cover plate that covers at least a portion of the inner wall opening that faces the electrical component in the space in the frame. An outer wall opening formed on an outer wall portion of the arm pivoting frame and facing the battery in the space in the frame;
The work vehicle according to claim 1, further comprising a cover member that covers the outer wall opening. An annular inner wall opening reinforcing plate fixed over and over the inner wall along the peripheral edge of the inner wall opening,
The work vehicle according to claim 2, further comprising: an annular outer wall opening reinforcing plate that is fixed to the outer wall portion so as to overlap along the peripheral edge portion of the outer wall opening portion.

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