JPH1159190A - Operating part structure of agricultural machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To operate even if an operator is in the standing postine by covering the specified height of the upper part of an operating part by a ceiling member when a seat of an operating part is in the seating state, by retreating the ceiling member to the specified height on the upper part, and making the ceiling member to be freely displaced in relation to the presence or absence of the seat. SOLUTION: A ceiling member 8B of an operating part is supported on right and left strut members 12, 12 provided on the rear part of a seat 11 of the operating part so as to be freely raised, lowered and oscillated around a lateral shaft core Pi. Moreover, a gas spring 13 is provided between the left strut member 2 and the left side part of the ceiling member 8B. When the operator performs the operation in a state where he stands on a step part S on the front side of the seat 11, since the ceiling member 8B is raised backward from the normal closing position, the operator does not contact the ceiling member 8B. While, when the operator seats on the seat 11, the ceiling member 8B is lowered against energizing force of the gas spring 13 and made into the normal closing state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating unit structure of an agricultural working machine such as a combine or agricultural tractor.

[0002]

2. Description of the Related Art Conventionally, as a driving unit structure of an agricultural working machine,
It is well-known that an operation cabin is provided so as to cover the left, right, front, rear and upper parts of the operation unit. The ceiling of the operation cabin is fixed to front, rear, left, and right side walls.

[0003]

However, in the above-mentioned conventional operating unit structure of the agricultural working machine, the worker stands, particularly in a small agricultural working machine, because the ceiling is fixed. Even if the operator wants to work while looking into a location far away from the aircraft in front of the vehicle, the ceiling must be obstructed, and the operator must operate the vehicle while sitting on a seat in the driving cabin.

[0004] The present invention has been made in view of the above-mentioned circumstances, and even in a relatively small-sized agricultural work machine, an operation section structure of the farm work machine that allows a worker to operate in a standing posture. For the purpose of providing.

[0005]

[Means for Solving the Problems]

(Configuration) The operation unit structure of the agricultural working machine according to claim 1 of the present invention includes a front wall that covers a front side of the operation unit,
When the seat of the operating unit is in a seated state, the upper part of the operating unit is covered with a ceiling member at a predetermined height, and when the seat is not seated, the ceiling member is positioned at a predetermined height above a step in the operating unit. To retreat from the position
The ceiling member is configured to be displaceable in association with the presence or absence of seating on the seat.

(Operation) According to the structure of the first aspect of the present invention, a front wall is provided to cover the front side of the driving unit, and when the seat of the driving unit is seated, the upper part of the driving unit is raised to a predetermined height. When the seat is not seated, the ceiling member is retracted from the predetermined height position above a step portion in the operation section, in conjunction with the presence or absence of seating on the seat. Since the ceiling member is configured to be displaceable, when the worker is sitting on the seat, the ceiling member automatically covers the upper part of the operation unit, and the ceiling member is protected from sunshading and rain. When the operator stands and works, the ceiling member retreats from the normal ceiling position so that the operator cannot hold the ceiling member.

(Effects) Therefore, according to the structure of the first aspect of the present invention, when the operator operates the vehicle in a standing posture, the ceiling can be kept out of the way, so that the operation can be easily performed. . In addition, since the ceiling member is switched to an appropriate posture according to the seating state of the seat, it is not necessary to manually change the posture of the ceiling member.

(Structure) According to a second aspect of the present invention, in the operation unit structure of the agricultural working machine according to the first aspect, the ceiling member is interlocked with a vertical displacement of the seat depending on whether or not the seat is seated. The seat and the ceiling member are linked by a mechanical link mechanism so as to change to the retracted position and the use position.

(Operation) According to the configuration of the second aspect of the present invention, the ceiling member is changed to the retracted position and the use position in conjunction with the vertical displacement of the seat depending on the presence or absence of the seat. Since the seat and the ceiling member are linked by a mechanical linking mechanism, the displacement of the seat according to the presence or absence of the seat is mechanically detected, and when the seat is not seated, the load due to the seating is reduced. The ceiling member is raised by the mechanical linkage mechanism in conjunction with the displacement of the seat due to the absence.

(Effects) Therefore, according to the configuration of the second aspect of the present invention, the ceiling member covers the upper part of the seat as a normal ceiling and operates in conjunction with the vertical displacement of the seat by the mechanical linkage mechanism. If the person stands from the seat,
The ceiling is retracted from the normal ceiling position by the mechanical linkage mechanism in conjunction with the displacement of the seat due to the reduction of the load due to the standing, so that the ceiling can not be disturbed by the worker in the standing posture, Workability can be improved by a relatively inexpensive and simple structure.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a small combine as an example of an agricultural work machine. This combine is equipped with a machine body frame 2 supported by a pair of left and right crawler traveling devices 1, 1 on which a pre-cutting device 3, a threshing device 4, a boarding operation unit 5, a driving unit 6, a Glen tank 7, and the like are mounted. Make up.

As shown in FIG. 1 to FIG.
Are covered with a cabin 8. Specifically, cabin 8
Is composed of a front wall portion 8A, a ceiling member 8B, and a horizontal wall portion 8C facing the cutting pretreatment device 3 side,
The front wall portion 8A is provided with a front window 9 for securing a front view. The side wall portion 8C is provided with a side window 10 for securing a view to the cutting pretreatment device 3 side. On the other hand, the side opposite to the side where the pre-cutting device 3 is located is in an open state, and this open part is used as a place where the operator gets on and off.

The ceiling member 8B is a pair of right and left support members 1 provided at a position behind the seat 11 in the driving section 4.
2 and 12 are supported so as to be able to undulate and swing around the horizontal axis P1, and the left support member 12 and the ceiling member 8
A gas spring 13 is laid across the left side of B. The seat 11 is supported by the cover member 14 so as to be swingable around a horizontal axis P2 at the front end. And
A connecting rod 15 as an example of a mechanical link mechanism is pivotally connected between the upper end of the backrest portion 11B of the seat 11 and a position on the front side of the horizontal axis P1 of the ceiling member 8B. The pivot point P3 side of the connecting rod 15 with the backrest 11B is made of a pipe material 15A.
5 is constituted by a shaft 15B on the pivot point P4 side with respect to the ceiling member 8B. The shaft 15B is partially inserted into the pipe 15A, and the shaft 15B is connected to the pipe 15A.
Is provided with a lock bolt 17 for integrally fastening and fixing.

With the above configuration, as shown in FIG. 2, the lock bolt 17 is fastened to the pipe member 15A and the shaft member 15B.
By setting the relative position with
When the worker is not seated on the seat 11, the seat 11 is also moved along the horizontal axis P <b> 2 as the gas spring 13 changes the posture of the ceiling member 8 </ b> B to open and swing in a substantially upright state.
Around it, it leans slightly forward. That is, when the operator operates while standing in the step S on the front side of the seat 11, as shown in FIG. 4, the posture in which the ceiling member 8B rises rearward from the position where the ceiling member 8B normally closes at the predetermined height position. Therefore, the worker standing in the step S does not hit the ceiling member 8B. On the other hand, when the worker sits on the seat 11 in that state,
As shown in FIG. 3, the seat 11 is lowered to a position regulated by the cover member 14 due to the seating load of the worker, and accordingly, the ceiling member 8 </ b> B also receives the urging force of the gas spring 13 via the connecting rod 15. It descends in opposition to its normal closed position. Further, when the fastening of the lock bolt 17 is released and the pipe member 15A and the shaft member 15B are relatively fitted to be freely retractable, the ceiling member 8B is always opened by the urging force of the gas spring 13. You will be in a state to do.
As means for elastically urging the ceiling member 8B and the seat 11 to the open side, not only the gas spring 13 but also a separate spring may be provided. Further, a lock means L1 for keeping the ceiling member 8B in a closed state at all times is provided.

[Brief description of the drawings]

FIG. 1 is an overall side view showing a combine.

FIG. 2 is a longitudinal rear view showing the driving cabin.

FIG. 3 is a longitudinal sectional side view showing the driving cabin in a state where a ceiling is lowered.

FIG. 4 is a longitudinal sectional side view showing the driving cabin in a state where a ceiling is raised.

FIG. 5 is a perspective view showing a driving cabin.

[Explanation of symbols]

 5 Operation part 8A Front wall 8B Ceiling member 11 Seat 15 Mechanical link mechanism S Step part

Claims (2)

[Claims] A front wall for covering a front side of the driving unit; a seat of the driving unit in a seated state; a cover above a top of the driving unit at a predetermined height; and a seat in a non-seated state. An agricultural work machine in which the ceiling member is configured to be displaceable in association with the presence or absence of seating on the seat so as to retract the ceiling member from the predetermined height position above a step portion in the operation unit. Driving unit structure. 2. The seat and the ceiling member are mechanically linked so that the ceiling member is changed to a retracted position and a use position in accordance with the vertical displacement of the seat depending on whether or not the seat is seated. The operation part structure of the agricultural working machine according to claim 1, wherein