JPH05246354A - Step device in operator's seat for agricultural working machine - Google Patents

Abstract

PURPOSE:To allow work to be performed in a comfortable position and facilitate getting-on/off by forming a step seat, provided downward in front of a seat, into double structure of an outer frame part and an inner frame part, and forming the inner frame part in such a way as to be adjustable in its vertical movement in relation to the other frame part fixed to an under carriage. CONSTITUTION:A step seat 7 is formed of an outer frame part 8 and an inner frame part 9, and the inner frame part 9 can be adjusted in its vertical movement in relation to the outer frame part 8. The inner frame part 9 is provided with a pair of cross rods 15a, 15b on each lateral side between the inner and outer frame parts 9, 8, and one end sides of these cross rods 15a, 15b are pivotally fixed to the inner and outer frame parts 9, 8. At the time of moving the step seat 7 vertically, a motor 20 is driven by an operating switch 212. Then a rotating spiral shaft 19 rolls from the driven motor 20 through gears 21a, 21b so as to open/close a clearance between the intersection part 17 of the cross rods 15a, 15b and the inner frame part 9 with the rotating spiral shaft 19 fitted thereto, and the inner frame part 9 is moved vertically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stepping device in a cockpit of an agricultural working machine, which can be used for a combine or the like.

[0002]

2. Description of the Related Art A conventional step device for this type of agricultural working machine has a structure in which it can be simply moved and adjusted in the vertical direction. However, this conventional type is extremely inconvenient for the operator to get on and off, and cannot be put to practical use. That is, the step device in the cockpit has a problem in safety when it is attempted to descend from the cockpit in a raised state because the ground height becomes high and it is difficult to descend and there is a danger. On the other hand, when getting in the vehicle, it was inconvenient that you had to make a lot of trouble if you stopped while raising the step.

[0003]

[Problems to be Solved by the Invention]
It is common to move the seat up and down to ensure forward visibility. When the seat is adjusted up and down in this way, it is difficult to maintain a desired work posture unless the step device on which the operator puts his / her feet also moves up and down accordingly. Further, it is less tired for an operator to adjust the step device up and down according to his / her body shape and continue the work in a comfortable posture without adjusting the seat up and down.

The present invention has a structure in which the steps can be adjusted up and down in order to meet such a demand, but in particular, it is a great problem to make it easier for an operator to get on and off.

[0005]

The present invention takes the following technical means in order to achieve the above object. That is, in the cockpit 5 of the agricultural working machine 4 in which the working machine 3 is mounted on the chassis 2 having the traveling device 1, the step seat 7 on the lower front side of the seat 6 on which the worker rests his / her foot is an outer frame. The step seat 7 has a double structure including the portion 8 and the inner frame portion 9.
The step device in the cockpit of the agricultural working machine in which the inner frame portion 9 is vertically adjustable with respect to the outer frame portion 8 fixed to the chassis 2.

[0006]

EXAMPLE First, the structure will be described. Chassis 2
It has a traveling device 1 including a crawler, is configured to be able to travel, and is equipped with a thresher that is a working machine 3. The mowing and conveying device 10 is composed of a mowing device 11 for mowing the grain culms in the field and a conveying device 12 for conveying the mowing culms, and is provided in the front part of the chassis 2 so as to be adjustable up and down, and supplies the mowing culms to the threshing machine. It is designed to be possible.

The cockpit 5 is constructed such that a seat 6 is provided on the rear side of the harvesting and conveying device 10 in the front part of the chassis 2 and an operation box 13 is arranged on the front side. The step seat 7 on which the operator places his / her foot is composed of two outer frame parts 8 and an inner frame part 9 located inside thereof. Therefore, first, the outer frame portion 8 is a portion located on the outside of the floor portion of the cockpit 5, and is attached and fixed to the fixed frame 14 provided on the chassis 2. The outer frame portion 8 is configured such that the outer portion of the chassis 2, that is, the boarding / alighting side is made wider than the opposite inner side so that the operator can easily get in and out.

The inner frame portion 9 is located inside the outer frame portion 8 and constitutes a main portion of the step seat 7, and is configured to be vertically movable relative to the outer frame portion 8. That is, the inner frame portion 9 is provided with a pair of intersecting cross rods 15a and 15b on both left and right sides between the inner frame portion 9 and the outer frame portion 8 and one end side of the intersecting cross rods 15a and 15b. 8 and the other end of the slot 16
It is configured to be slidable by fitting into a and 16b respectively.

The intersecting cross rods 15a and 15b are connected to the connecting member 18 connecting the left and right intersecting portions 17, and the rotary spiral shaft 1
9 is screwed in, and the upper part of the rotary spiral shaft 19 is attached to the inner frame 9
It is pivotally attached to the lower surface of. The motor 20 is configured to be pivotally attached to the lower surface of the inner frame portion 9 in the same manner as the rotary spiral shaft 19 and can drive the rotary spiral shaft 19 via gears 21a and 21b which are suspension transmission mechanisms.

The operation switch 22 of the motor 20 is provided on the operation box 13. The break petal 23 is attached to the inner frame portion 9 via the arm 24, and is configured to be vertically movable integrally with the inner frame portion 9. Therefore, since the break petal 23 does not change its relative position with the inner frame portion 9, the break petal 23 can always perform an easy break operation without imposing an operational burden on the operator.

The arm 24 is arranged further outside than the outer frame portion 8. Power steering device 25
Attaches the valve device 26 to the inner frame portion 9, and
7 are connected and configured. Therefore, the power steering device 25 can be operated with the same feeling because the power steering device 25 moves up and down integrally as the inner frame 9 moves up and down.

The safety cover 28 is provided so as to be hung on the operator's entry / exit side of the inner frame portion 9, and even if the inner frame portion 9 is raised to the highest position, the foot is inserted between the inner frame portion 9 and the fixed outer frame 8. It is configured not to. Reference numeral 29 indicates an auxiliary step. Next, the operation will be described.

First, in order to raise the step seat 7, the operation switch 22 provided in the operation box 13 is operated to drive the motor 20 in the forward direction. Then, the rotary spiral shaft 19 moves from the driven motor 20 to the gear 21.
The connecting member 1 which is transmitted via a and 21b and is screwed together.
The action of moving 8 downward by a screw works.

That is, since the rotating spiral shaft 19 acts in a direction to open a space between the intersecting portion 17 of the intersecting cross rods 15a and 15b and the inner frame portion 9 to which the rotating spiral shaft 19 is attached, the intersecting cross shaft 15 is formed. The other ends of the rods 15a and 15b move in the elongated holes 16a and 16b in the direction of arrow a. As a result, the inner member 9 moves upward and stops, as shown in FIG.

The height of the inner member 9 can be determined by operating the operation switch 22. In this way, the step seat 7 can raise the inner member 9 in accordance with the physique of the operator or the rising height of the seat 6 to operate the cockpit 5 in a comfortable posture.

[0016]

As described above, according to the present invention, in the cockpit of an agricultural work machine in which the work machine is mounted on the chassis having the traveling device, the operator places the work machine below the front side of the seat. Since the step seat to be placed has a double structure of an outer frame part and an inner frame part, the inner frame part of the step seat can be vertically moved and adjusted with respect to the outer frame part fixed to the chassis, It has a feature that the step seat can be adjusted up and down according to the physique of the worker and the height of the seat so that the operator can drive in a comfortable posture.

Particularly, in the case of the present invention, since the step seat is composed of the inner frame portion and the outer frame portion, the outer frame portion is fixed in the fixed position even when the inner frame portion is raised, It has the effect of being convenient for getting on and off the worker.

[Brief description of drawings]

FIG. 1 is a side view showing an operation of a main part of the present invention.

FIG. 2 is a side view showing an embodiment of the present invention.

FIG. 3 is a plan view showing a part of the embodiment of the present invention in a cutaway manner.

FIG. 4 is an overall side view of the present invention.

FIG. 5 is a side view showing an embodiment of the present invention.

[Explanation of symbols]

1 traveling device 2 chassis 3 working machine 4 agricultural working machine 5 pilot's seat 6 series
7 Step seat 8 Outer frame 9 Inner frame

Claims (1)

[Claims] 1. In an operator's seat of an agricultural work machine in which a work machine is mounted on a chassis having a traveling device, a step seat, which is arranged below a front side of a seat and on which a worker places a foot, is located on an outer frame portion and an inner frame. Step device in the cockpit of an agricultural work machine, which is configured in a double structure with the upper and lower parts and is configured such that the inner frame part of the step seat can be vertically moved and adjusted with respect to the outer frame part fixed to a chassis.