JP2017065402A - Passenger service car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve convenience and riding performance as a loading table for left and right rear fenders.SOLUTION: A passenger service car comprises left and right rear fenders 7 which are positioned at left and right of a driving seat 29 and of which a top plate 47 is used as also a loading table, and left and right guard members 48 which prevent falling of a loaded object. Each top plate 47 has a horizontal plane part 47A, a front side extension part 47B which extends front downwards from a front end of the plane part 47A, and a posterior extension part 47C which extends rear downwards from a rear end of the plane part 47A. Each guard member 48 has a first leg 48A which extends upwards from the front side extension part 47B, a second leg 48B which extends upwards from the posterior extension part 47C, and a guide part 48C of a U-shape in a plan view which is bridged over the first leg 48A and the second leg 48B. A horizontal front end guide portion 48a of the guard part 48C is positioned on the front side of a vehicle body with respect to a front end of the plane part 47A, and a horizontal rear end guard portion 48b of the guard part 48C is positioned on the rear side of the vehicle body with respect to a rear end of the plane part 47A.SELECTED DRAWING: Figure 1

Description

  The present invention includes a driving unit having a driver seat, left and right rear fenders that are located on lateral sides of the driver seat, and the top plate is also used as a mounting table, and the left and right top plates placed outward. The present invention relates to a passenger work vehicle including left and right guard members that prevent the vehicle from falling.

  As a passenger work vehicle as described above, from the upright wall portion extending in the vertical direction, from the upper end portion of the upright wall portion, the first extending portion extending in a forwardly inclined posture toward the vehicle body outer side, from the upper end portion of the upright wall portion Left and right fenders having a second extending portion extending in a horizontal posture on the lateral side of the vehicle body and a third extending portion extending in a rearwardly inclined posture from the upper end portion of the standing wall portion to the lateral side of the vehicle body; The left and right first guard bodies extending in the front-rear orientation between the intermediate portion and the front end portion of the second extension portion, and the left and right first guards in a U shape in plan view across the front end portion and the rear end portion of the second extension portion By providing two guard bodies, each second extending portion is also used as a mounting table, each first guard body functions as a handrail for getting on and off, and each second guard body is separated from the second extending portion. There is one configured to function as a guard member that prevents the dropped object from falling outward (for example, Patent Documents) Reference).

Japanese Patent Laying-Open No. 2014-205368 (paragraph numbers 0037 to 0038, FIG. 1)

  In said structure, since each 2nd guard body is planar view U shape covering the front-end part and rear-end part of a 2nd extension part, in each rear fender, from the front-back length of a 2nd extension part, Even long objects can no longer be placed. Therefore, there is room for improvement in terms of convenience in using each rear fender as a mounting table.

  In addition, since the first guard body is in a left-right orientation with respect to the driver that is difficult for the driver to get on and off from the boarding / alighting part located immediately before the rear fender, it is difficult to use the first guard body as a handrail for getting on and off. It has become. Therefore, there is room for improvement in terms of getting on and off.

  That is, in the above-described passenger work vehicle, it is desired to improve convenience in using each rear fender as a mounting table and to improve boarding / exiting performance.

As means for solving the above problems, a passenger work vehicle according to the present invention includes:
A driving unit having a driver's seat, left and right rear fenders that are located on lateral sides of the driver's seat, and the top plate is also used as a mounting table, and prevents the object from falling from the left and right top plates to the outside. And left and right guard members
The left and right top plates are respectively a horizontal plane part, a front extension part extending forward and downward from the front end of the plane part, and a rear extension extending rearward and downward from the rear end of the plane part. And
The left and right guard members respectively include a front first leg portion extending upward from the front extension portion, a rear second leg portion extending upward from the rear extension portion, A guard portion having a U-shape in plan view that spans between the first leg portion and the second leg portion, and a front end guard portion facing left and right in the guard portion is located on the front side of the vehicle body with respect to the front end of the plane portion. And the rear-end-side rear-end guard part in the said guard part is located in the vehicle body rear side rather than the rear end of the said plane part.

  According to this means, it becomes possible to place an object to be placed on the top plate that is longer than the length of the flat portion of the top plate. As a result, the convenience as a mounting table for each top plate can be enhanced.

  In addition, when the driver gets on and off from the boarding / exiting part located immediately before each rear fender, the front end guard part of each guard member is in a front-and-back posture with respect to the driver that is easy for the driver to get on and off from the boarding / exiting part. Since it is located near the boarding / exiting part rather than the front end of the part, the front end guard part can be used as a handrail for boarding / exiting. As a result, it is possible to improve boarding / exiting characteristics while simplifying the configuration.

As one of the means for making the present invention more suitable,
The first leg portion is connected to an end portion on the driver seat side in the front end guard portion.

  According to this means, for example, the front end guard portion can be easily gripped as compared to the case where the first leg portion is connected to the left and right intermediate portions of the front end guard portion. As a result, the front end guard part can be easily used as a handrail for getting on and off.

It is a perspective view of a tractor. It is a left view of a tractor. It is a top view of a tractor. It is a rear view of the principal part of a tractor. It is a perspective view of the principal part which shows the shape of a windbreak board, etc. It is a front view of the principal part which shows the shape of a windbreak board. It is a vertical left side view of the main part showing the fixing structure of the steering cylinder. It is a vertical left side view of the principal part showing the support structure of the support shaft that supports the left and right front wheels in a rollable manner. It is a vertical front view of the principal part which shows the structure of the support arm which supports an external exhaust part. It is a disassembled perspective view of the principal part which shows the structure of the support arm which supports an external exhaust part. It is a vertical left view of the principal part which shows the structure of a rear fender. It is a disassembled perspective view which shows the structure of the left rear fender. It is XIII-XIII sectional drawing of FIG. It is XIV-XIV sectional drawing of FIG. It is XV-XV sectional drawing of FIG.

  Hereinafter, as an example of an embodiment for carrying out the present invention, an embodiment in which the present invention is applied to a tractor that is an example of a passenger work vehicle will be described with reference to the drawings.

  The direction indicated by the arrow F shown in FIG. 1 is the front side of the tractor, the direction indicated by the arrow L is the left side of the tractor, and the direction indicated by the arrow U is the upper side of the tractor.

  As shown in FIGS. 1 to 4, the tractor exemplified in the present embodiment includes a driving unit 1 located in the front half of the vehicle body, a front frame 2 that supports the driving unit 1, a housing unit 3 that also serves as a rear frame, The riding type driving unit 4 located in the rear half, the left and right front wheels 5 located on the left and right of the driving unit 1, the left and right rear wheels 6 located on the left and right of the driving unit 4, and the left and right rear wheels 6 covering the left and right rear wheels 6 A rear fender 7 is provided.

  As shown in FIGS. 1 to 3, the prime mover 1 includes an engine 8 located at the rear of the prime mover 1, a cooling fan 9 located in front of the engine 8, a radiator 10 located in front of the cooling fan 9, and the engine 8. A muffler 11 as an exhaust treatment device located on the upper left side, a resin fuel tank 12, and a swingable bonnet 13 covering them are provided. By operating, the cooling fan 9 takes outside air into the bonnet from the intake portion 13A provided at the front end of the bonnet 13, and supplies the taken outside air as cooling air to the radiator 10 and the engine 8 at the rear.

  As shown in FIGS. 2, 5, and 6, the fuel tank 12 has an L shape in a plan view extending from a space between the operating unit 4 and the engine 8 above the housing unit 3 to a space above the right side of the engine 8. Is formed. A heat shield 14 is disposed between the engine 8 and the fuel tank 12.

The heat shield plate 14 includes a flat surface portion 14A that also serves as a mounting table for the fuel tank 12, a vertical wall portion 14B that also serves as a windbreak plate, and the like. The vertical wall portion 14 </ b> B is formed such that a lower end edge 14 a is recessed upward along the outer surface of the opposing housing unit 3.
Thereby, the clearance gap formed between the lower end edge 14a of the vertical wall part 14B and the outer surface of the housing unit 3 can be made small.
That is, while the vertical wall portion 14B of the heat shield plate 14 is also used as a windshield plate to reduce the number of components, the heated cooling air after engine cooling is generated from the gap between the vertical wall portion 14B and the housing unit 3. It is possible to make it difficult for the inconvenience to flow out to the operation unit side.

  As shown in FIGS. 1, 2, 7, and 8, the front frame 2 is provided with front and rear holders 16 that rotatably support a front and rear support shaft 15 at the bottom thereof. The support shaft 15 is fixed to the left and right center portion of the front wheel support member 17 facing left and right. The front wheel support member 17 supports the left and right front wheels 5 at the left and right ends thereof so as to be steerable. As a result, the front frame 2 supports the left and right front wheels 5 in a state where rolling is possible with the support shaft 15 facing forward and backward.

As shown in FIG. 8, the longitudinally supporting shaft 15 is equipped with a protective sleeve 18 at both ends thereof. The front and rear holders 16 are provided with bushes 19 that are fitted onto the sleeve 18 so as to be relatively rotatable.
As a result, when muddy water enters the holders, wear due to the intrusion occurs between the sleeve 18 and the bushing 19 to prevent wear of the support shaft 15 due to muddy water intrusion. can do.
As a result, maintenance against wear caused by the intrusion of muddy water into each holder can be dealt with by replacing the sleeve 18 or the bush 19 which is cheaper than the support shaft 15.

  As shown in FIGS. 2 to 4, the housing unit 3 includes a working device (not shown) via a left and right rear axle case 20 extending to the left and right, a working device connecting link mechanism 21, and a link mechanism 21 at a rear portion thereof. And the like, and an electrohydraulic control type lifting unit 22 that lifts and lowers, and a PTO shaft 23 that makes it possible to take out working power to the working device.

  As shown in FIGS. 1 to 4, the driving unit 4 is disposed between the steering wheel 24 for steering the front wheels, the main transmission lever 25, the auxiliary transmission lever 26, the PTO clutch lever 27, the clutch pedal 28, and the left and right rear fenders 7. A driver's seat 29 is provided.

  As shown in FIGS. 1, 2, and 7, the steering wheel 24 is operatively linked to the left and right front wheels 5 via a fully hydraulic power steering unit (hereinafter referred to as a PS unit) 30. The PS unit 30 includes a double-acting steering cylinder 31 that steers the left and right front wheels 5, a control unit (not shown) that controls the flow of oil to the steering cylinder 31 according to the operation of the steering wheel 24, and the like. I have.

The steering cylinder 31 is fixed by left and right U-bolts 32 and four detent nuts 33 in a state where the cylinder tube 31A is placed on the left and right support portions 17A provided at the rear portion of the front wheel support member 17. Has been.
In this way, by employing the rotation nut 33 for fixing the cylinder tube 31A, the number of work steps required for fixing the cylinder tube 31A can be reduced compared to the case where a double nut is used instead of the rotation nut 33. be able to. In addition, it is easy to manage torque when tightening the nut.
As a result, workability when the cylinder tube 31A of the steering cylinder 31 is fixed to the left and right support portions 17A is improved. Further, it is possible to avoid a possibility that a sufficient locking effect by the double nut cannot be obtained due to a difference in tightening of the nut depending on an operator who fixes the cylinder tube 31A, which occurs when the double nut is employed. be able to.

  As shown in FIGS. 1 to 3, 9, and 10, the muffler 11 includes an exhaust pipe 34 that extends from the exhaust part. The exhaust pipe 34 has an external exhaust part 34 </ b> A that extends long upward at the left outer portion of the bonnet 13. A lower end portion of the external exhaust portion 34A is supported by a support arm 35 extending from the left end portion of the front frame 2 toward the upper left.

  As shown in FIGS. 9 and 10, the support arm 35 includes a first strip steel plate 36 connected to the front frame 2 and a second strip steel plate 37 connected to the external exhaust part 34 </ b> A. The first strip steel plate 36 includes a vertically connecting portion 36A along the left side surface of the front frame 2 and an extending portion 36B extending straight from the upper end of the connecting portion 36A toward the upper left. . The first strip steel plate 36 is connected to the front frame 2 in a front-back orientation in which the band width direction is along the front-rear direction of the vehicle body. The second strip steel plate 37 is connected to the rear end of the first strip steel plate 36 such that the width direction of the second strip steel plate 37 is in the lateral orientation along the lateral direction of the vehicle body. The second strip steel plate 37 has an upper end portion 37A connected to the external exhaust portion 34A.

In the first strip steel plate 36, the rear end edge 36a of the connecting portion 36A is welded to the right end edge 37a of the second strip steel plate 37. In the first strip steel plate 36, the lower end of the extension portion 36B is positioned at the upper end of the right end edge 37a of the second strip steel plate 37, and the upper end of the extension portion 36B is the upper end portion 37A of the second strip steel plate 37. The rear end edge 36b of the extending portion 36B is welded to the front surface 37b of the second strip-shaped steel plate 37 in a state of being located on the left side of the center of the second strip-shaped steel plate 37 in the vicinity.
Thereby, for example, compared with the case where the rear end edge 36b of the extending portion 36B is welded to the upper right edge 37c of the second strip-shaped steel plate 37, the support arm 35 and the external exhaust portion 34A are shared in the vehicle longitudinal direction. Shake easily occurs.
As a result, it is possible to suppress stress concentration at the upper end portion 37A of the second strip steel plate 37, which is a connecting portion of the support arm 35 to the external exhaust portion 34A, and at the upper end portion 37A due to the stress concentration. Generation of cracks can be prevented.

  As shown in FIGS. 1 to 4 and 11 to 15, the left and right rear axle cases 20 have a connecting portion 20 </ b> A for a rear fender. The left and right rear fenders 7 are L-shaped connecting members 40 connected to the connecting portions 20A, front and rear reinforcing members 41 extending between the flat surface portion 40A and the vertical wall portions 40B of the connecting members 40, and connecting by the reinforcing members 41 Front first column member 42 and rear second column member 43 extending upward from the reinforcing portion of member 40, first extension member 44 extending first and upward from first column member 42, and first column A second extending member 45 extending rearward and upward from the member 42, a side plate 46 that covers the rear wheel 6 from the inside of the vehicle body, a top plate 47 that covers the rear wheel 6 from above, and the like are provided.

  Each reinforcing member 41 is formed in a hem-spread shape in which the left and right widths and the front and rear widths are wider toward the lower side. The column members 42 and 43 and the extending members 44 and 45 are longitudinal side plate support portions 42A to 45A to which the side plate 46 is welded and left and right top plate support portions 42B to 42B to which the top plate 47 is welded. 45B.

As shown in FIGS. 1 to 4, 11, and 12, the left and right top plates 47 are respectively a horizontal plane portion 47 </ b> A, a front side extension portion 47 </ b> B that extends forward and downward from the front end of the plane portion 47 </ b> A, and A rear side extending portion 47C extending downward and rearward from the rear end of the flat surface portion 47A is provided.
As a result, the left and right rear fenders 7 can also use the top plate 47 having the flat portion 47A as a mounting table on which a bag or the like storing fertilizers or drugs consumed during work is placed.

The left and right rear fenders 7 include guard members 48 that prevent the placed object from dropping outward from the left and right top plates 47. The left and right guard members 48 are respectively a front first leg portion 48A extending upward from the front extension portion 47B, a rear second leg portion 48B extending upward from the rear extension portion 47C, and In addition, the first leg 48A and the second leg 48B are bent so as to have a U-shaped guard part 48C in plan view. The left and right front end guard portions 48a in each guard portion 48C are located on the front side of the vehicle body with respect to the front end of the flat surface portion 47A. Further, the left and right rear end guard portions 48b in the respective guard portions 48C are located on the rear side of the vehicle body with respect to the rear end of the flat portion 47A.
As a result, it is possible to place a placement object that is longer than the front and back length of the flat portion 47 </ b> A of the top plate 47 on each top plate 47. As a result, the convenience as a mounting table for each top plate 47 can be enhanced.
Further, when the driver gets on and off from the boarding / alighting portion 49 located immediately before each rear fender 7, the front end guard portion 48a of each guard member 48 is in front of and behind the driver that is easily gripped by the driver getting on and off from the boarding / alighting portion 49. Since it is positioned closer to the boarding / exiting portion 49 than the front end of the flat surface portion 47A in the orientation posture (left-right orientation with respect to the vehicle body), the front end guard portion 48a can be used as a handrail for getting on and off. As a result, it is possible to improve boarding / exiting characteristics while simplifying the configuration.

  The left and right guard members 48 are respectively connected to the front and rear side end guard portions 48c of the guard portion 48C, the front third leg portion 48D and the rear side fourth leg portion 48E extending from the side end guard portion 48c to the flat surface portion 47A. Are connected. Thereby, the intensity | strength as the guard member 48 can be raised.

  As shown in FIGS. 1, 3 and 12, the first leg portion 48A is fixed to the end portion on the driver seat side in the front extension portion 47B. Thereby, the length of the front end guard part 48a can be lengthened, and it becomes easy to use the front end guard part 48a as a handrail for getting on and off.

  48 A of 1st leg parts are connected with the edge part by the side of the driver's seat in the front end guard part 48a. This makes it easier to grip the front end guard portion 48a than when the first leg portion 48A is connected to the left and right intermediate portion of the front end guard portion 48a, for example. As a result, the front end guard portion 48a can be easily used as a handrail for getting on and off.

As shown in FIGS. 2, 4, and 11 to 13, the left and right rear fenders 7 have a first reinforcing plate 50 welded across the front reinforcing member 41 and the first support member 42 on the outside of the vehicle body, A second reinforcing plate 51 welded over the rear reinforcing member 41 and the second support column member 43 is provided.
Thereby, the lower side of each rear fender 7 can be reinforced without providing a reinforcing member inside the vehicle body of each rear fender 7.
As a result, the auxiliary transmission lever 26 and the PTO clutch lever 27 are disposed between the left rear fender 7 and the driver seat 29, and the main transmission lever 25 is disposed between the right rear fender 7 and the driver seat 29. The lower side of each rear fender 7 can be reinforced to a high strength suitable for using each top plate 47 as a mounting table.

  As shown in FIGS. 3, 4, 11, and 12, the left and right side plates 46 are substantially triangular side walls 46 </ b> A surrounded by a second column member 43, a second extending member 45, and a top plate 47. Is provided with a connecting portion 46B to which a cross bar 52 extending between the left and right side plates 46 is connected.

  As shown in FIGS. 11 to 14, the left and right side plates 46 are formed with a plurality of reinforcing beads 46 </ b> C. Thereby, it is possible to reinforce each side plate 46 to a high strength suitable for using each top plate 47 as a mounting table while preventing an increase in the number of parts.

As shown in FIGS. 11 and 12, among the plurality of beads 46C, the reinforcing bead 46Ca located on the side wall portion 46A of each side plate 46 includes the second support member 43, the second extending member 45, and the connecting portion 46B. And is formed in a substantially triangular shape close to.
As a result, when a placement object is placed on the top plate 47, the stress applied to the second support member 43 and the second extension member 45 can be distributed to the connecting portion 46B with the cross bar 52. The load on the member 43 and the second extending member 45 can be reduced.
As a result, the durability of each rear fender 7 can be improved while the top plate 47 of each rear fender 7 is also used as a mounting table.

[Another embodiment]
The present invention is not limited to the configuration exemplified in the above embodiment, and a typical alternative embodiment of the present invention will be exemplified below.

[1] The front extension 47B of the left and right rear fenders 7 may have an arc shape that extends from the front end of the flat portion 47A so as to curve downward and forward.

[2] The rear side extending portions 47C of the left and right rear fenders 7 may have an arc shape that curves and extends downward from the rear end of the flat surface portion 47A.

[3] The first leg portion 48A may be connected to the left and right intermediate portion of the front end guard portion 48a.

[4] The second leg portion 48B may be connected to the left and right intermediate portion of the rear end guard portion 48b.

  The present invention includes a driving unit having a driver seat, left and right rear fenders that are located on lateral sides of the driver seat, and the top plate is also used as a mounting table, and the left and right top plates placed outward. The present invention can be applied to a passenger work vehicle such as a tractor, a riding mower, a riding rice transplanter, and the like that includes left and right guard members that prevent the fall of the vehicle.

DESCRIPTION OF SYMBOLS 4 Driving | operation part 7 Rear fender 29 Driver's seat 47 Top plate 47A Plane part 47B Front side extension part 47C Rear side extension part 48 Guard member 48A 1st leg part 48B 2nd leg part 48C Guard part 48a Front end guard part 48b Rear end guard part

Claims (2)

A driving unit having a driver's seat, left and right rear fenders that are located on lateral sides of the driver's seat, and the top plate is also used as a mounting table, and prevents the object from falling from the left and right top plates to the outside. And left and right guard members
The left and right top plates are respectively a horizontal plane part, a front extension part extending forward and downward from the front end of the plane part, and a rear extension extending rearward and downward from the rear end of the plane part. And
The left and right guard members respectively include a front first leg portion extending upward from the front extension portion, a rear second leg portion extending upward from the rear extension portion, A guard portion having a U-shape in plan view that spans between the first leg portion and the second leg portion, and a front end guard portion facing left and right in the guard portion is located on the front side of the vehicle body with respect to the front end of the plane portion. And the passenger work vehicle in which the rear end guard portion in the left-right direction in the guard portion is located on the rear side of the vehicle body with respect to the rear end of the flat portion.   The passenger work vehicle according to claim 1, wherein the first leg portion is connected to an end portion on a driver seat side in the front end guard portion.

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