JP2007076558A - Tractor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve assembling work efficiency by greatly reducing assembling man-hour on an assembling line of a tractor. <P>SOLUTION: A dash board supporting member supporting a dash board is provided at the rear of an engine, and a pedal supporting member and a steering column supporting member are attached to the dash board supporting member. Therefore, to a large-sized member which is the engine, the dash board, a pedal, a steering shaft, and furthermore a steering wheel are integrally attached, thereby materializing a large-sized unit such as an engine unit. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tractor.

Conventionally, as a form of a tractor, there is a type in which a partition wall that partitions a prime mover unit and a driving unit is provided on a traveling machine body, and a dashboard support member, a pedal support member, and a steering column support member are provided on the partition wall ( For example, see Patent Document 1).
Japanese Patent Publication No. 7-57596

  However, in the above-described tractor, the dashboard support member, the pedal support member, and the steering column support member are provided on the partition walls, respectively. From the assembly procedure, until the partition walls are erected on the traveling machine body. Has a problem that the support member and the support member cannot be provided.

  As a result, when viewed from the whole assembly operation of the tractor, the number of assembly steps is still large and the assembly operation is complicated.

  Therefore, the present invention provides a tractor characterized in that a dashboard support member for supporting a dashboard is provided behind the engine, and a pedal support member and a steering column support member are attached to the dashboard support member. is there.

  The present invention is also characterized in that a dashboard support member is provided with a bonnet support member that supports the bonnet.

  (1) In the first aspect of the present invention, a dashboard support member for supporting the dashboard is provided behind the engine, and a pedal support member and a steering column support member are attached to the dashboard support member.

  Since the pedal support member and the steering column support member are attached to the dashboard support member provided in the engine in this way, the dashboard, the pedal, and the steering are attached to the large-sized member called the engine via the support member and the support member. A shaft and further a steering wheel can be integrally attached to achieve a large unit called an engine unit.

  Therefore, by assembling the engine unit in advance and assembling the engine unit with other units, the assembly man-hours on the assembly line of the tractor can be greatly reduced, and the assembly work efficiency is further improved. Can do.

  (2) In the present invention described in claim 2, the dashboard support member is provided with a bonnet support member for supporting the bonnet.

  In this way, since the bonnet support member is provided on the dashboard support member provided on the engine, the bonnet can be easily attached to the engine unit via the bonnet support member, and the assembly work efficiency of the tractor can be further improved. This can be further improved.

  1 and 2 is a tractor according to the present invention. As shown in FIG. 3, the tractor A includes a first unit U1 in which a clutch unit 1 and a transmission unit 2 are connected, and a motor unit. 3 includes a second unit U2 in which members such as a handle, pedals, a dashboard, and a fuel tank are assembled via a support member, a front support 5 and a battery, a radiator, and the like supported by the front support 5. The assembled third unit U3, the fourth unit U4 assembled with a step / fender and the like, and the fifth unit U5 which is a bonnet are assembled.

  An assembly line is composed of a main line and a sub-line, and the first to fifth units U1 to U5 are individually assembled on the sub-line in advance, and then the first to fifth units on the main line. U1 to U5 are assembled.

  In this way, the assembly line is divided into a main line and a subline, and members to be assembled are assembled in parallel as first to fifth units U1 to U5 in advance on the subline, respectively. Since the units U1 to U5 are assembled and assembled on the main line, the main line can be shortened as an assembly line, and a large number of workers and various kinds of assembly members can be arranged along the main line. There is no need to arrange them, and the assembly work in the main line can be simplified.

  Moreover, since the main line only assembles the first to fifth units U1 to U5 assembled on the sub line in advance, the number of times the main line is stopped due to a trouble can be reduced compared to the conventional case. As a whole assembly work, work efficiency can be greatly improved.

  Hereinafter, each unit will be described with reference to the drawings.

[Description of first unit U1]
As shown in FIGS. 1 to 3, the first unit U <b> 1 interlocks and connects the front end edge of the mission unit 2 to the rear end edge of the clutch unit 1, and provides an elevating operation unit 6 at the top of the mission unit 2. At the same time, left and right brake parts 7 and 7 and left and right rear axle housings 8 and 8 are attached to the rear part of the left and right side walls of the transmission part 2, respectively. 9 is a lift arm, 10 is a lift cylinder, 11 is a main transmission lever, 12 is an auxiliary transmission lever, and 13 is a rear wheel.

[Description of second unit U2]
As shown in FIGS. 1 to 9, the second unit U <b> 2 is configured by assembling members such as a handle, pedals, a dashboard, a fuel tank, etc. via a support member to the prime mover unit 3. 6 to 9, a dashboard support member 22 for supporting a dashboard 21 is provided on the rear wall of the engine 20, and a pedal support member 23, a steering column support member 24, and the like are provided on the dashboard support member 22. The dashboard support member 22 is provided with a bonnet support member 26 that supports the bonnet 25 via a support member body 55 described later.

  A fuel tank support machine frame 28 that supports the fuel tank 27 is disposed immediately above the engine 20.

  As shown in FIGS. 6 to 9, the dashboard support member 22 has a front surface of a plate-like attachment body 29 that extends in the left-right direction on the upper rear wall of the engine 20. The front end surfaces of a pair of left and right support pieces 30, 30 extending in the front-rear direction are fixed, and a support plate piece 31 is stretched between the front end surfaces of both support pieces 30, 30 in an erected state. The dashboard 21 is supported by the dashboard support member 22.

  The pedal support member 23 fixes a cylindrical shaft support 32 extending in the left-right direction on the support plate piece 31 of the dashboard support member 22, and a pedal support shaft extending in the left-right direction in the coaxial support 32 33 is inserted.

  A clutch pedal boss portion 34 is rotatably fitted to the left end portion of the pedal support shaft 33 projecting leftward from the shaft support 32, and the clutch pedal extends vertically to the clutch pedal boss portion 34. A clutch pedal 36 is attached via an arm 35, and the clutch pedal boss portion 34 is linked to a clutch mechanism (not shown) built in the clutch portion 1 via a clutch operating arm 37.

  Also, a left brake pedal boss portion 38 is fitted to the right end portion of the pedal support shaft 33 projecting rightward from the shaft support 32, and the left brake pedal arm extends vertically to the left brake pedal boss portion 38. The left brake pedal 40 is attached via 39, the left brake pedal boss portion 38 is interlocked with the pedal support shaft 33, and the left brake operation arm 41 is attached to the left end portion of the pedal support shaft 33, The left brake part 7 is interlocked and connected to the left brake arm 41 via a left brake interlocking mechanism 42 (see FIG. 2).

  On the other hand, a right brake pedal boss portion 43 is rotatably fitted to the right end portion of the pedal support shaft 33 protruding rightward from the shaft support 32, and extends vertically to the right brake pedal boss portion 43. A right brake pedal 45 is attached via a right brake pedal arm 44, a right brake operating arm (not shown) is attached to the right brake boss portion 43, and a right brake interlocking mechanism 46 is attached to the right brake operating arm. The right brake part 7 is interlocked and connected through the gap (see FIG. 2).

  The steering column support member 24 has a power steering valve 50 attached between the rear portions of the support pieces 30 and 30 of the dashboard support member 22, and a lower end portion of the steering column 51 that extends vertically on the ceiling of the power steering valve portion 50. A steering shaft 52 is inserted into the steering column 51, and the steering shaft 52 has a lower end portion linked to a power steering valve portion 50 and a steering wheel 53 at the upper end portion. It is attached.

  The bonnet support member 26 is provided with a pair of left and right projecting supports 54, 54 projecting outward from the left and right front portions of the support plate piece 31 of the dashboard support member 22, and the upper surfaces of both projecting supports 54, 54. A support member main body 55 formed in a rear gait type is straddled between the sections.

  The support member main body 55 is formed in a rear view portal type by horizontally extending a horizontal support member forming piece 57 extending in the left and right lateral direction between a pair of left and right vertical support member forming pieces 56 extending in the vertical and vertical directions. The hot air shield 58 of the rear view type is stretched outwardly along the front end edges of the vertical support member forming pieces 56 and 56 and the horizontal support member forming pieces 57, and the hot air The shield 58 prevents hot air on the bonnet 25 side from flowing in from the dashboard 21 side.

  In addition, a plate-shaped bonnet mounting body 59 extending in the left-right direction is provided on the upper part of the hot air shield 58 so as to protrude forward, and the bonnet 25 is attached to the bonnet mounting body 59 via a pivotal support 64 described later. It is adapted to be freely opened and closed (see FIGS. 4, 13 and 14).

  Here, a fuel tank 27 formed in a rectangular box shape extending in the front-rear direction is formed in the support member main body 55 so as to be inserted in the front-rear direction.

  The fuel tank support machine frame 28 is formed as a frame from a pair of left and right front and rear extension pieces 60 and 61 extending in the front and rear direction and a pair of front and rear left and right extension pieces 62 and 63 extending in the left and right direction. Placed in position.

  That is, the fuel tank support machine frame 28 supports the left front / rear extension piece 60 on the exhaust manifold 20a provided on the upper left side of the engine 20 via a left support bracket (not shown), while the right front / rear extension piece 60 is supported. 61 is supported by an intake manifold 20b provided on the upper right side of the engine 20 via a right support bracket (not shown), and the left and right extension pieces 63 are disposed between a pair of left and right projecting supports 54 and 54. It is installed at a position directly above the engine 20.

  The fuel tank 27 is placed on the above-described fuel tank support machine frame 28, and the fuel tank 27 is fastened and supported and fastened by a fastening member such as a belt. Thus, the fuel tank support machine frame 28 is supported and fixed in a state of being inserted into the support member main body 55.

  The second unit U2 is configured as described above. In the second unit U2, a pedal support member 23 and a steering column support member 24 are attached to a dashboard support member 22 provided in the engine 20. Therefore, a large member called the engine 20 is connected to the dashboard 21, the clutch pedal 36, the left and right brake pedals 40, 45, the steering shaft 52 and the steering wheel 53 via the support member 22 and the support members 23, 24. Can be integrated into a large unit called an engine unit.

  Therefore, by assembling the engine unit in advance and assembling the engine unit to another unit, the assembly man-hours on the assembly line of the tractor A can be reduced as compared with the conventional one, and the assembly work efficiency is further improved. Can be improved.

  Moreover, since the fuel tank 27 can be attached to the large member of the engine 20 via the fuel tank support machine frame 28, a larger unit such as an engine unit including the fuel tank 27 can be achieved.

  Furthermore, since the dashboard support member 22 is provided with the bonnet support member 26, the bonnet 25 can be easily attached to the engine unit including the fuel tank 27 via the bonnet support member 26. The assembly work efficiency can be further improved.

  A dashboard support member 22 that supports the dashboard 21 is provided behind the engine 20, a bonnet support member 26 is provided on the dashboard support member 22, and a fuel that supports the fuel tank 27 directly above the engine 20 Since the tank support machine frame 28 is disposed, the dashboard 21, the bonnet 25, and the fuel tank 27 can be reliably supported by the support members 22, 26 and the fuel tank support machine frame 28. The support members 22 and 26 and the fuel tank support machine frame 28 can be formed compactly.

  At this time, the hot air shield 58 can be easily provided on the support member main body 55 of the bonnet support member 26 that supports the bonnet 25, and the hood 25 side and the dashboard 21 side can be reliably secured by the hot air shield 58. It can be shielded and hot air can be prevented from flowing from the bonnet 25 side to the dashboard 21 side.

  As a result, it is possible to satisfactorily ensure the comfortability of the operator who sits on the driving unit and performs the driving operation.

  Further, since the fuel tank 27 is formed to extend in the front-rear direction, the internal capacity of the fuel tank 27 can be secured as large as possible.

  In addition, since it is inserted through the rear-view portal-type support member body 55 and supported by the fuel tank support machine frame 28, when performing maintenance work on the fuel tank 27, the rear end portion is used as a fulcrum. The fuel tank 27 can be easily slid out through the open space of the hood 25 by sliding the fuel tank 27 to the front side of the fuselage by releasing the fixing to the fuel tank support machine frame 28.

  Accordingly, since the bonnet 25 and the dashboard 21 need not be removed, the maintenance workability of the fuel tank 27 can be improved.

[Description of third unit U3]
As shown in FIGS. 1 to 5, the third unit U <b> 3 has a radiator 71 disposed on the front support 5 via a support frame 70, and a position just before the radiator 71 via the support frame 70. An air cleaner 72 is disposed, a pre-cleaner 73 is disposed immediately above the air cleaner 72, and a battery 74 is disposed immediately below the air cleaner 72. 75 is a muffler, and 76 is an air supply pipe.

  10 to 12, the front support 5 is integrally formed by extending in the left-right direction a support body 77 formed into a thick plate shape by casting and a front edge of the support body 77. The front weight 78 is molded and the front weight 78 can be detachably attached, and the battery 74 is fitted by integrally forming a rectangular stepped recess extending in the left-right direction at the front upper surface of the support body 77. The battery mounting concave portion 80 that can be disposed in the upper and lower portions of the support body 77, and the cylinder mounting concave portion 82 that can be disposed in the concave shape upward by extending in the left-right direction at the rear lower surface of the support body 77. And front axle mounting seats 84 and 85 that are integrally formed on the front and rear sides of the cylinder disposing recess 82 so that the front axle 83 can be mounted.

  Here, as shown in FIGS. 1 to 5, the front weight attaching portion 79 extends downward from the front end edge of the support body 77 to form an attachment base piece 79 a having a certain left and right width. And an engagement piece 79b protruding upward and downward from the front end edge of the mounting base piece 79a, and the engagement piece 79b is positioned in front of the bonnet 25 at the foremost part of the fuselage. It is arranged.

  Then, by engaging the engaging recess 79a formed on the front weight 78 with the engaging piece 79b from the left and right sides, the front weight 78 can be detachably attached to the front weight attaching portion 79. .

  Further, left and right front connecting seats 86, 86 are formed on the left and right walls of the front axle mounting seats 84, 85 as shown in FIG. The left-right width W1 of the engine 20 is formed to be substantially the same width as the left-right width W2 of the left / right rear connecting seats 87, 87 formed at the lower part of the left / right side wall of the engine 20, and the left / right rear connecting seats 87, The left and right front connection seats 86, 86 of the front support 5 are connected to 87 through a pair of left and right connection members 88, 88 extending in a straight belt shape in the front-rear direction. 1 and 4, 89 is a fastening bolt. In FIG. 12, 90 is a power steering mechanism, and 91 is a front wheel.

  Since the battery support recess 80 is provided in the front support 5 in this manner, the battery 74 can be positioned and stably fixed only by placing the battery 74 in the battery support recess 80. This can be easily performed, and the workability of arranging the battery 74 can be improved.

  In addition, since the battery 74 is disposed in the battery placement recess 80, the battery 74 can be disposed as low as possible in front of the engine 20. As a result, as compared with the case where it is placed on the upper surface of the front support 5, the cooling air taken from the front into the hood 25 is less disturbed by the battery 74, and the cooling effect of the engine 20 is reduced. Can be improved.

  Furthermore, since the front axle mounting seats 84 and 85 are provided on the front support body 5, the front axle 83 can be easily and securely attached via the front axle mounting seats 84 and 85. 83 mounting workability can be improved.

  A front weight attaching portion 79 extending in the left-right direction is provided at the front end portion of the front support body 5 and the front weight attaching portion 79 is disposed at the foremost portion of the airframe. In the state where the weight 78 is removed (the front weight is not attached), the front weight attaching portion 79 also functions as a bumper, and damage to the bonnet 25 and other airframes can be prevented.

  Further, when the front support 5 is connected to the lower left and right side walls of the engine 20 via a pair of left and right connecting members 88 and 88 extending in the front-rear direction, the left and right side walls of the front axle mounting seats 84 and 85 are connected. The left and right front connection seats 86, 86 formed in the left and right width W1 of the left and right rear connection seats 87, 87 formed at the bottom of the left and right walls of the engine 20 are formed to have substantially the same width. Therefore, by connecting the rear parts of the connecting bodies 88, 88 to the left and right rear connecting seats 87, 87 of the engine 20 in a superposed state and fastening them with the fastening bolts 89, the connecting bodies 88, 88 Good adhesion to the left and right side wall lower portions of the engine 20 can be ensured.

  As a result, since the load of the engine 20 can be received by the coupling bodies 88 and 88 via the fastening bolt 89, the shearing force acting on the fastening bolt 89 can be reduced and the fastening bolt 89 is damaged. Can be prevented.

  Moreover, the assembling work for assembling the front support 5 to the engine 20 becomes easy, and the assembling workability can be improved.

[Description of 4th unit U4]
As shown in FIGS. 1 to 3, the fourth unit U4 includes left and right step pieces 95 and 95 that are arranged to protrude outward at the left and right side positions of the front part of the mission unit 2. The left and right side fender pieces 97 and 97 are arranged so as to cover the front and upper sides of the right rear wheels 96 and 96. The grip pieces 99, 99 are attached to the right fender pieces 97, 97.

  As shown in FIG. 2, the left and right step openings 95 and 95 are provided with left and right maintenance openings 100 and 100, respectively, and the left and right maintenance openings 100 and 100 can be freely opened and closed by opening and closing lids 101 and 101, respectively. The lid is closed.

  As shown in FIGS. 1 and 2, the left and right step pieces 95 and 95 are left and right step piece support frames projecting outwardly from the left and right wall front portions of the mission section 2. It is attached to and supported by 102,102.

  Here, in the present embodiment, the hydraulic oil tank 103 is attached to the left step piece support frame 102 and disposed below the left step piece 95, and the oil inlet 104 provided at the upper portion of the hydraulic oil tank 103 is disposed. In addition, oil supply can be performed from above the left step piece 95 through the left maintenance opening 100 with the opening / closing lid 101 opened.

  The left and right fender pieces 97, 97 are attached to and supported by the rear part of the mission unit 2.

  A driver's seat 105 is arranged between the left and right fender pieces 97, 97 at the rear upper position of the mission unit 2, and the driver's seat 105, the steering wheel 53 and the pedals 36, 40, 45 described above. The operation unit 106 is configured by levers 11 and 12 for various operations provided at the rear of the mission unit 2.

[Explanation of the fifth unit U5]
As shown in FIGS. 1 to 3, the fifth unit U5 is composed of a bonnet 25. The bonnet 25 is attached to the bonnet support member 26 as described above, so that the motor unit 3 and the front support 5 are connected to each other. The upper part is covered so that it can be opened and closed.

  Here, as shown in FIG. 1, the bonnet 25 is bent in a quarter arc shape from a ceiling portion 25 a formed by being bent slightly downwardly in a downwardly inclined manner and a front end edge portion of the ceiling portion 25 a. The front upper part 25b formed by extending the lower end edge of the front upper part 25b, the left and right side edges of the front wall part 25c and the left and right side edges of the ceiling part 25a. It is formed from left and right side wall portions 25d and 25d that are smoothly curved and continuously provided.

  Further, as shown in FIG. 1, the left and right side wall portions 25d and 25d are formed of front half side wall forming bodies 25e and 25e and rear half side wall forming bodies 25f and 25f. 25e is formed by integrally forming the front half of each side wall 25d, 25d and the upper half edge of each side wall 25d, 25d, and is connected to each side edge of the ceiling 25a, front top 25b, and front wall 25c. On the other hand, the rear side wall forming bodies 25f, 25f are detachably attached to the front support body 5 and the engine 20 while being integrally formed in this state.

  Further, as shown in FIGS. 13 and 14, the pivotal support body 64 pivotally supporting the bonnet 25 to the bonnet mounting body 59 is provided with a mounting body side pivot support piece 65 attached to the bonnet mounting body 59. A mounting body side boss 65a is provided on the body pivot piece 65 with the axis line directed in the left-right direction. On the other hand, a bonnet side pivot piece 66 is attached to the rear of the inner surface of the ceiling 25a of the bonnet 25. A bonnet-side boss 66a with the axis directed in the direction is provided, and the pivot 67 extending in the left-right direction is inserted into the bosses 65a, 66a in a state where the bosses 65a, 66a are aligned on the same axis. Configured. 27a is an oil filling port portion of the fuel tank 27, 68 is an interference avoidance notch formed to avoid interference with the oil filling port 27a, and 69 is a mounting bracket.

  As described above, in the present embodiment, the tractor A assembles the first to fifth units U1 to U5 individually in advance on the sub-line, and these first to fifth units U1 to U5 on the main line. Further, the driver's seat 105 and the hydraulic oil pipe 107 shown in FIG. 1 are provided.

The side view of the tractor concerning the present invention. The top view of the tractor. The perspective explanatory view of the 1st-5th unit of the tractor. Side surface explanatory drawing of the front half part of the tractor. Plane explanatory drawing of the front half part of the tractor. The perspective view of the 2nd unit. The side view of the 2nd unit. The top view of the 2nd unit. The rear view of the 2nd unit. The top view of a 3rd unit. Sectional side view of the third unit. The bottom view of the 3rd unit. Side surface explanatory drawing of a pivot. Plane explanatory drawing of a pivot.

Explanation of symbols

A Tractor U1 1st unit U2 2nd unit U3 3rd unit U4 4th unit U5 5th unit
1 Clutch part 2 Mission part 3 Motor part 5 Front support body,
6 Lifting operation part 7 Left / Right brake part 8 Left / Right rear axle housing

Claims (2)

  A tractor comprising a dashboard support member for supporting a dashboard behind the engine, and a pedal support member and a steering column support member attached to the dashboard support member.   The tractor according to claim 1, wherein a bonnet support member that supports the bonnet is provided on the dashboard support member.

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