JPH0810067Y2 - Structure of the operating unit of the traveling aircraft - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a structure of an operating portion of a traveling machine body such as an agricultural tractor.

[Problems to be Solved by Prior Art and Invention] Generally, in this type of traveling machine body, a steering wheel angle adjusting mechanism (tilt steering wheel) capable of adjusting the vertical angle of the steering wheel (steering handle) according to the physique and preference of the driver. ) Are provided. However, in the past,
In the case where the handle angle adjustment mechanism is provided, the number of parts is increased because it is necessary to add a support shaft that supports the handle to swing up and down and a bracket for mounting the support shaft to the machine body operation unit. As a result, the structure becomes complicated, and the assembly work becomes complicated, causing a problem.

[Means for Solving the Problems] The present invention was devised with the object of providing a steering body structure for a traveling vehicle body capable of eliminating these drawbacks in view of the above-mentioned circumstances, and a steering wheel In a traveling machine body, a steering wheel angle adjusting mechanism that supports a handle to swing up and down, and a foot-operated operating pedal such as a brake pedal whose base end is supported to swing up and down are provided in an operating portion in front of a driver's seat. The operating portion is provided with a support member that supports the swinging support shafts of the steering handle and the operation pedal so that the axes of both shafts coincide with each other.

With this configuration, the present invention makes it possible to reduce the number of parts and simplify the structure, and to significantly facilitate the assembling work.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings.
In the drawings, 1 is a traveling vehicle of an agricultural tractor,
An engine compartment 4 covered with left and right fans 2 and a bonnet 3 is formed in the front half of the traveling machine body 1, and an engine 5 and a radiator 6 are installed in the engine compartment 4, but the engine 5 has an output shaft. The structure for outputting the engine power to the drive wheels 9 and the PTO shaft 10 via the transmission 7 and the transmission 8 is the same as the conventional one.

The radiator 6 is arranged in a space behind the engine 5 in the engine compartment 4, and a fan 11 that is cooled by the engine power transmitted by a belt is provided in front of the radiator 6. Airframe frame at the lower end
Reversed letter shaped radiator tab 12 fixed to 1a side
It is attached to the. On the other hand, 13 is the engine room 4
A panel 15 which is a rear part and a front part of the driver's seat 14 and which forms left and right side surfaces of the control part 13 is a mounting plate.
The mounting plate 16 is fixed to the radiator bracket 12 via 16 and has the same vertical dimension as the radiator tab 12 and the panel 15 to separate the engine compartment 4 from the operating portion 13. It is designed to function as a partition board. That is, in order to prevent the hot engine air from flowing out to the operating portion 13, it is necessary to partition the engine room 4 and the operating portion 13, and conventionally, a partition material such as a cushion material or a plate material is provided in the peripheral gap of the radiator 6. Although the material is provided, in the embodiment, the mounting plate 16 of the panel 15 can also be used as the partition material on both the left and right sides of the radiator 6.

Further, 17 is an operation unit unit attached to the operation unit 13, and the operation unit unit 17 includes a pair of left and right unit frames 18 extending upward from the machine body frame 1a, a steering handle 19, and left and right brake pedals 20, 21. The clutch pedal 22 and the like are assembled, and the battery 24 is installed on the bottom plate 23 that is integrally installed between the left and right unit frames 18.

The steering handle 19 includes a steering bracket 25, which is integrally provided at the base end, in a unit frame.
The steering bracket 25 is also supported by the unit 18 so as to be swingable up and down, and the steering bracket 25 is also supported by the unit frame 18 so as to be swingable up and down. It is designed to be supported by the same axis. That is, the fixed boss 18a and the support shaft 18b, which are oriented in the left-right direction and have the same axis, are fixed to the upper ends of the left and right unit frames 18, and the fixed boss 18a has a base end of the clutch pedal 22. A pivot shaft 22a of which is pivotally fitted from the outside, and at the outer end of the support shaft 18b, bosses 20a and 21a at the base ends of the brake pedals 20 and 21.
Is rotatably fitted to the outside, but bosses 25a, 25b projectingly provided on the left and right outer side surfaces of the steering bracket 25 having a substantially U-shape are
The steering handle 19 is swingably supported by externally and rotatably fitted to the tip end of the pivot 22a penetrating the fixed boss 18a and the inner end of the support shaft 18b. still,
26 is an orbital roll integrally attached to the steering bracket 25, 27 is a locking mechanism for fixing the steering handle 19 at a desired vertical angle, and 28 is a parking for locking the left and right brake pedals 20 and 21 at the stepped position. It is a brake mechanism.

In the embodiment of the present invention constructed as described above, the steering handle 19, the brake pedals 20 and 21 and the clutch pedal 22 have the same shaft by the fixing boss 18a and the support shaft 18b of the unit bracket 18 which also serves as a mounting portion for these members. Since it is supported on the core, it is not necessary to add an attachment member for swingably supporting the steering handle 19 as in the conventional case. Therefore, in the traveling machine body that constitutes a so-called tilt handle, the number of parts can be reduced and the structure can be simplified, and the assembling work can be significantly simplified.

Moreover, since the steering handle 19, the left and right brake pedals 20, 21, the clutch pedal 22, the battery 24, etc. can be configured as the operation unit unit 17 before the assembly of the machine body, the assembly is remarkably simplified and the assembling workability is improved. Can be greatly improved.

Further, in the embodiment, the mounting plate 16 of the panel 15 is
Can also be used as a partition plate for preventing the hot engine air from flowing out to the operation portion 13, so that the number of parts can be further reduced.

The present invention is not limited to the above-described embodiment, and in particular, except for the main part, a power transmission path from the engine 5 to the fan 11 is provided as in the second embodiment shown in FIG. 7, for example. The universal joint 29 is installed in the power transmission path from the engine 5 to the fan 11 as in the third embodiment shown in FIG.
Also, the radiator 6 may be attached to the front so as to secure a space for projecting the output shaft 7 of the engine 5, and the like.

[Advantages] In short, since the present invention is configured as described above, the steering wheel can be vertically swung while the steering wheel angle adjustment mechanism for adjusting the vertical angle of the steering wheel is provided. Since the supporting shaft supporting the steering pedal is supported by the supporting member supporting the operating pedal such that the operating pedal supporting shaft and the shaft center are aligned with each other, the swing supporting shaft for the steering wheel is supported as in the conventional case. It is possible to eliminate the need for an additional bracket or the like. Therefore, the number of parts can be reduced and the structure can be simplified in the traveling machine body including the steering wheel angle adjusting mechanism, and the assembling work can be remarkably simplified.

[Brief description of drawings]

1 is a side view of a tractor, and FIG. 2 is a side view of a tractor according to the present invention.
The figure is a side view of the same main part as above, FIG. 3 is a front view of the same main part as above, FIG. 4 is an enlarged plan view of the main part, FIG. 5 is a side view of the operating part, FIG. 6 is a front view of the same, and FIG. FIG. 8 is a side view of a main part of a tractor showing another example, and FIG. In the drawing, 1 is a traveling body, 13 is an operating unit, 17 is an operating unit, 18 is a unit frame, 18a is a fixed boss, 18b is a support shaft, 19 is a steering wheel, 20 and 21 are brake pedals, 22 is a clutch pedal. , 24 is a battery, and 25 is a steering bracket.

Claims (1)

[Scope of utility model registration request] 1. A steering wheel angle adjusting mechanism for swingably supporting a steering handle and a foot-operated operating pedal such as a brake pedal whose base end is swingably supported on an operating portion in front of a driver's seat. In the traveling machine body provided, a supporting member for supporting the swinging support shafts of the steering handle and the operation pedal so that both axes of the steering shaft and the operation support shaft are aligned with each other is provided.