JP2012140096A - Working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working vehicle in which right and left side covers and front grills to cover a prime mover are mounted and fixed to a fixing member side installed at a vehicle body side capable of reducing labor and time in the installation of the side covers and front grills, and easily preventing the number of parts from being reduced.SOLUTION: In the working vehicle, the prime mover 11 having an engine 8 and a radiator 9 is covered with an upper side bonnet hood 6, the right and left side covers 4 and the front grills 3, and the right and left side covers 4 and front grills 3 are mounted and fixed to the fixing member 17 side mounted at the vehicle body side. An attaching portion 33 of each of the right and left side covers 4 and an attaching portion 38 of each of the front grills 3 are tightened together with the fixing member 17 side by a fixing tool 18.

Description

  The present invention relates to a work vehicle in which a prime mover having an engine and a radiator is covered with an upper bonnet hood, left and right side covers, and a front front grill.

  The driving part having the engine and the radiator is covered with an upper bonnet hood, left and right side covers, and a front front grille, and the left and right side covers and the front grille are attached to the fixed member side installed on the vehicle body side. A fixed work vehicle disclosed in Patent Document 1 is known.

JP 2007-253741 A (FIG. 4-8)

  However, in the work vehicle described in the above document, the side cover mounting portion and the front grill mounting portion are separately fixed to the fixing member side by the fixtures. In addition to the need for fine adjustment and positioning, a fixing tool is required for each of the parts, and the number of parts increases, making it difficult to keep costs low.

  In the work vehicle in which the left and right side covers and the front grille covering the driving part are attached and fixed to the fixing member side installed on the vehicle body side, the labor for installing the side covers and the front grille is reduced. It is an object to provide a work vehicle that can easily suppress an increase in the number of parts.

  In order to solve the above-mentioned problems, first, the driving unit 11 having the engine 8 and the radiator 9 is covered with the upper hood hood 6, the left and right side covers 4, 4, and the front front grill 3, and the left and right The side cover 4, 4 and the front grille 3 are mounted on and fixed to the fixing member 17 side mounted on the vehicle body side, and the fixing part 18 is used to attach the mounting portion 33 of the side cover 4 and the front grille 3. The portion 38 is fastened together with the fixing member 17 side.

  Second, the mounting portion 33 is formed with a notch 33a that is open at the rear so that the fixing member 18 can be loosened and the mounting portion 33 of the front grill 3 can be detached from the fixing member 17 side. It is a feature.

  According to the above configuration, both the front grille and the side cover are positioned and fixed together by tightening, so that it is possible to save the trouble of adjusting the positioning of each other, and the mounting part of the front grill and the mounting part of the side cover are reduced. Since it is not necessary to separately prepare fixtures that are fixed to the fixing member, the number of parts can be reduced and the cost can be kept low.

  In addition, if the notch-shaped part with the rear opened is formed in the mounting part so that the mounting part of the front grille can be detached from the fixing member side by loosening the fixing tool, only by loosening the fixing tool, Since the front grill can be removed from the fixing member side, it is highly convenient.

It is a perspective view which shows the structure of the front part side of the agricultural tractor to which the work vehicle of this invention is applied, (A) shows the state which closed the bonnet hood, (B) shows the state which opened the bonnet hood. Yes. It is a disassembled perspective view of the tractor front part. It is a disassembled side view of the tractor front part. FIG. 4 is a side view showing a state where a front grill and a side cover are omitted from FIG. 3. (A) is a side view of a front grill and a side cover, (B) is a principal part side view of (A). (A), (B) is the principal part perspective view and principal part top view of FIG.1 (B).

  FIG. 1 is a perspective view showing the configuration of the front side of an agricultural tractor to which a work vehicle of the present invention is applied, in which (A) shows a state where the hood is closed, and (B) shows that the hood is opened. Indicates the state. The illustrated tractor includes a traveling machine body 1 having four wheels (not shown), and a work machine (not shown) such as a rotary tiller that is connected to a rear portion of the traveling machine body 1 so as to be movable up and down. While moving 1 forward, various work such as tillage work is performed by the work implement.

  The traveling machine body 1 includes a metal chassis 2 extending in the front-rear direction, a metal front grille 3 on the front side, metal side covers 4 and 4 on the left and right sides, and a metal bonnet hood (bonnet) 6 on the upper side. Is formed in the front half of the chassis 2, and the engine 11 including the engine 8 and the radiator 9 is accommodated in the engine compartment 7. A control unit 12 on which an operator gets in is installed. The bonnet hood 6 is mounted and supported on the traveling machine body 1 so as to be swingable up and down with the rear end portion as a fulcrum, and the upper side of the engine room 7 is opened and closed by the vertical swing of the bonnet hood 6.

  2 and 3 are an exploded perspective view and an exploded side view of the front portion of the tractor, and FIG. 4 is a side view showing a state in which the front grill and the side cover are omitted from FIG. The chassis 2 includes a pair of left and right vertical frames 13, 13 formed in the front-rear direction, a single left-right bumper 14 that is fixedly attached to the front ends of the left and right vertical frames 13, 13 by welding or the like, and a bumper 14. There is provided a horizontal plate-like support base (support member) 16 which is positioned rearward and is installed and fixed between the front portions of the left and right vertical frames 13 and 13.

  The engine 8 is disposed behind the support 14 in a plan view, and a rectangular parallelepiped radiator 9 having a front view shape and a short front-rear length is located near the front side of the engine 8. A fixing member 17 extending upward from the rear end portion of the support base 16 is disposed in the vicinity of the front side. The side cover 4 and the front grille 3 are fastened together and fixed to the fixing member 17 via a bolt 18 with a knob in the left and right direction (fixing tool), and the radiator 9 is connected and fixed. The lower surface side of the closed hood hood 6 is received on the upper surface side, which will be described in detail later.

  While the traveling machine body 1 travels forward, the air introduced into the engine room 7 through the front grille 3 having air permeability in the front-rear direction is sent to the radiator 9 by a cooling fan (not shown) driven by engine power. After being sucked into the core portion (not shown) and cooling water flowing through the radiator 9 is cooled, the cooling water is exhausted out of the engine room 7 through a large number of vent holes 4 a formed in the side cover 4. Incidentally, the cooling water cooled on the side of the radiator 9 is returned to the engine 8, and after cooling the engine 8, it is sent again to the side of the radiator 9 and this cycle is repeated.

First, the configuration of the fixing member 17 will be described with reference to FIGS.
The fixing member 17 includes a pair of left and right vertical plates 19 and 19 extending in the vertical direction, and a horizontal plate 21 in the left and right direction that is fixed between the upper ends of the left and right vertical plates 19 and 19. The entire shape of 17 is formed in a gate shape when viewed from the front.

  The posture of each vertical plate 19 is determined so that the thickness direction faces the left-right direction, and the posture of the horizontal plate 21 is determined so that the thickness direction faces the vertical direction. It is bent so as to incline to the left and right inward, and further bent outward in the left and right directions so that the lower end portion on the lower side faces the vertical direction. For this reason, the distance between the left and right vertical plates 19 is set so that the upper part and the middle part are longer than the lower part. In addition, the lower end of the vertical plate 19 on one of the left and right sides (right side in the illustrated example) is welded and fixed to the upper surface of the support base 16 by welding or the like, and the lower end portion of the other vertical plate 19 penetrates the support base 16. Then, it faces the vertical frame 13 side, and the lower end of the vertical frame 19 on the other side is bolted to the vertical frame 13.

  In this manner, a lock that receives and locks the hood hood 6 on the upper surface side (specifically, the upper surface side of the lateral plate 21) of the standing fixing member 17 that is attached and fixed with high strength to the vehicle body side. A mechanism 22 and a pair of left and right attached portions 23 and 23 having a plate shape in a side view so that the left and right side covers 4 and 4 and the front grill 3 are attached are provided. The left and right attached portions 23, 23 may be configured by inserting upper ends of the left and right vertical plates 19, 19 into the horizontal plate 21 and projecting upward, or separate from the vertical plate 19. Thus, although a pair of left and right plate-like members may be formed by welding or the like to the upper surface side of the horizontal frame 21, in the example shown in the drawing, each attached portion 23 is formed by the former means.

  The lock mechanism 22 fixed between the left and right attached portions 23, 23 is an L-shaped lock side bracket 24 that is bolted to the fixing member 17, and a left-right turn to the front side of the lock side bracket 24. And a lock member 26 having a hook-like shape when viewed from the front. The lock member 26 is elastically biased by an elastic member 27 such as a tension spring so that the hook-shaped portion approaches the lock-side bracket.

  When the opened hood hood 6 is swung downward, a striker (not shown) provided on the lower surface side of the hood hood 6 comes into contact with the inclined portion 26a formed on the upper end side of the lock member 26, and the elastic member 27 The lock member 26 is rotated to the side where the hook-shaped part moves away from the lock-side bracket 24 against the elastic force.

  Subsequently, when the hood hood 6 is further swung to the lower position, the striker falls into a space between the lock side bracket 24 and the lock member 26 in a front view, whereby the inclined portion 26a and the striker are moved. The abutment is released, and the lock member 26 is rotated by the elastic force of the elastic member 27 so that the hook-like portion of the lock member 26 approaches the lock-side bracket 24, whereby the striker is moved to the lock member 26. The hood hood 6 is locked in the closed state.

  On the other hand, when the hood hood 6 is locked in the closed state, the lock member 26 is rotated by the linkage mechanism 28 such as a wire so that the hook-shaped portion of the lock member 26 moves away from the lock-side bracket 24. The lock is released and the hood hood 6 can be swung upward, whereby the hood hood 6 can be opened.

  The left and right side portions of the radiator 9 are fixedly mounted on the left and right side surfaces of the fixing member 17 by plate-shaped mounting brackets 29 extending in the front-rear direction. The left and right mounting brackets 29 respectively disposed on the left and right ends of the radiator 9 and the fixing member 17 correspond to the fixing member 17 having a narrower left and right width than the radiator 9, and the front and rear intermediate portions thereof are bent inwardly on the left and right sides. Is done. The rear end portion of the mounting bracket 29 is bolted to the side surface of the frame body 9a of the radiator 9, while the front end portion is bolted to the outer surface of the vertical plate 19 of the fixing member 17 so that the side portion of the radiator 9 is And fixedly connected to the side of the fixing member 17.

  In a gap formed between the front surface of the radiator 9 and the rear end of the fixing member 17, a plate-shaped dustproof net 31 that is positioned between the left and right mounting brackets and has a front view shape is inserted. In this way, the dustproof net 31 is positioned and fixed in the vicinity of the front side of the radiator 9, and prevents dust and the like from entering the core portion of the radiator 9.

Next, the configuration of the front grill 3 and the left and right side covers 4, 4 will be described with reference to FIGS.
5A is a side view of the front grille and the side cover, FIG. 5B is a side view of the main part of FIG. 6A, and FIGS. 6A and 6B are the main parts of FIG. It is a fragmentary perspective view and a principal part top view. The front grille 3 and the side cover 4 are placed and supported in a locked state on the support base 16 on the vehicle body side, and are attached and fixed to the fixing member 17 side.

  Each of the left and right side covers 4 is a plate-like member that has a long rectangular shape in the front-rear direction as viewed from the side, and has a shape that bulges in an arc shape toward the outer side in the front view. The entire upper edge portion of the side cover 4 extending in the front-rear direction and the entire front edge portion extending in the up-down direction are stepped portions 4b and 4c that are located on the left and right inner sides as compared with the other portions.

  On the lower end side of the inner side surface of the front edge portion constituting the stepped portion 4c of the side cover 4, a metal locking piece (locking portion) 32 that is long in the vertical direction when viewed from the side is projected downward. On the other hand, a metal fitting (mounting portion) 33 protruding forward from the side cover 4 is integrally attached and fixed to the upper end portion of the inner surface of the side cover 4. . In addition, a pair of upper and lower metal locking tools 34 are installed at the rear end of the inner surface of the side cover 4.

  The locking piece 32 is inclined inwardly on the left and right inward, and its lower end extends in the vertical direction. The fixture 33 is formed by bending a plurality of midway portions so that the distal end portion is positioned forward and left and right inside the base end portion fixed to the inner surface of the side cover 4. The tip part of is formed in a side view shape. The locking tool 34 is formed in an L shape in plan view by bending the rear part of the rectangular plate that is long in the front-rear direction as viewed from the side, to the left and right, and the bent part of the locking tool 34 is covered with the bent part. A locking hole 34a is formed.

  Each of the locking piece 32, the mounting tool 33, and the locking tool 34 has a concave shape or a hole formed in the side cover 4 with one or a plurality of convex portions P1 formed by locally indenting itself. It is positioned and attached to the side cover 4 by spot-welding the part by inserting or passing through the insertion part P2 in the shape.

  Then, a plurality of locking rods 36 integrally protruding forward from the rear wall of the engine room 7 are inserted into the locked holes 34a of the corresponding locking tools 34 so that the right and left The lower end portion of the locking piece 32 of each side cover 4 is inserted or inserted into side cover side locking holes (locking portions) 16a, 16a formed on the left and right sides of the rear end portion of the support base 16, respectively. When each side cover 4 is positioned and placed on the support base 16, the distal end portion of each fixture 33 of each of the left and right side covers 4 is positioned on the side surface (more specifically, the outer side surface) of the attached portion 23 on the near side. ) It will be in the state of being in the vicinity.

  The front grill 3 is curved and formed into a U shape with the rear in plan view open, and a mesh-like portion 3a (see FIG. 1) is formed on the front side of the front grill 3 so as to provide air permeability in the front-rear direction. Is secured, and work lights 37 (see FIG. 1) for illuminating the front are respectively installed on the left and right sides of the front grill 3. A pair of left and right metal fittings (mounting portions) 38 are fixed to the upper end portion of the front grill 3, and the lower end surface of the front grill 3 is a flat supported side surface 3 b along the upper surface of the support base 16. Thus, the supported side surface 3b is formed in a U-shape with the rear in the bottom view open so as to follow the plan view shape of the front grill 3.

  Each of the left and right fixtures 38 has a rear portion that is bent downward with respect to a front portion and a midway portion that extend obliquely upward and rearward, and extends in a rearward direction. An open notch 38a is formed.

  In addition, a plurality of vertical projecting portions 39 are formed integrally and projecting downward on the supported side surface 3b. Specifically, a pair of left and right projections 39 are provided at the center in the left-right direction, which is the front position of the supported side surface 3b, and the projections are also provided at the left and right rear ends of the supported side surface 3b. 39 is provided.

  The plurality of protrusions 39 are inserted or inserted (inserted in the illustrated example) into a plurality of front grille side locking holes (locking portions) 16b formed in the support base 16, respectively. When positioned and placed in the locked state, the rear end portion of each fixture 38 of the front grille 3 is positioned in the vicinity of the side surface (more specifically, the outer surface) of the attached portion 23 on the near side.

  At this time, the left and right mounting tools 38 of the front grill 3 are positioned between the mounting tool 33 of the near side cover 4 and the mounted portion 23 of the near side, Then, the fixture 33 of the side cover 4 is fastened and fixed together with the nut 41 and the bolt 18 with the knob in the left-right direction as described above in a co-tightened state.

  As described above, since the front edge portions of the left and right side covers 4 and 4 are inserted into the inner surfaces of the left and right rear ends of the front grill 3 in the state of being fastened together with the fixing member 17, The front edge outer surface side of each side cover 4 including 32 is covered and protected by the rear end portion of the front grill 3. Further, by this, the left and right side surfaces of the front grille 3 and the outer side surfaces of the left and right side covers 4 and 4 are integrally connected.

  In addition, when the hood hood 6 is closed, the upper edge portions of the left and right side covers 4, 4 are located on the inner surface side of the lower end portion of the bonnet hood 6, thereby the upper edge portions of the side covers 4 The outer surface of the hood is protected by a hood hood 6. In addition, by this, the left and right side portions of the hood hood 6 and the outer side surfaces of the left and right side covers 4 and 4 are integrally connected.

  On the other hand, when the front grille 3 and the side cover 4 are fastened together, the bolts 18 with the knobs are inserted into the notch-shaped portions 38a opened at the rear on the front grille 3 side. If the front grill 3 is moved or inclined forward by loosening, the left and right attachments 38, 38 of the front grill 3 are moved to the fixing member 17 side (further, without removing the bolt 18 with the knob from the attached portion 23. Specifically, since it is possible to remove (remove) from the left and right attached portions 23 and 23 and the bolts 18 and 18 with knobs, the labor of attaching and detaching is reduced.

3 Front grill 4 Side cover 6 Bonnet hood (bonnet)
8 Engine 9 Radiator 11 Driving part 17 Fixing member 18 Bolt with knob (fixing tool, bolt)
33 Fitting (Mounting part)
33a Notch-shaped part 38 Attachment (attachment part)

Claims (2)

  The driving portion (11) having the engine (8) and the radiator (9) is covered with an upper hood hood (6), left and right side covers (4), (4), and a front front grill (3). The left and right side covers (4), (4) and the front grille (3) are work vehicles in which the fixing member (17) installed on the vehicle body side is attached and fixed, A work vehicle in which the mounting portion (33) of the side cover (4) and the mounting portion (38) of the front grille (3) are fastened together on the fixing member (17) side.   A notch-like portion open to the rear of the attachment portion (33) so that the attachment portion (33) of the front grille (3) can be detached from the fixing member (17) side by loosening the fixture (18). The work vehicle according to claim 1, wherein (33a) is formed.

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