JPH0637092Y2 - Working section of work vehicle - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention provides an armrest capable of swinging up and down near the left and right of a driver's seat, and an operating lever of a working device is provided at a front end portion of the armrest in an operating position. On the other hand, the present invention relates to a driving part of a work vehicle that is mounted so as to project to the front side.

[Conventional technology]

As shown in FIG. 5, in the conventional driving section, an armrest (13) is attached so as to be slidable forward and backward, and the armrest (13) is slid rearward to get on and off the operating lever (14) when getting on and off the driving section. Compared with the structure in which the armrest (13) is not contacted, the rear space (S) for retracting the armrest (13) is not provided at the rear of the armrest (13), so that safety can be achieved when getting on and off even in a narrow driving space. As shown in FIG. 6, the armrest (1
A pivot shaft (12) that pivots 3) vertically is arranged at the rear part of the armrest (13) so that the operating lever (12) moves from the operating position of the armrest (13) to the operating part. The front portion of the armrest (13) was raised upward so that it would not come into contact with the armrest (13), and the position was freely changeable.

[Problems to be solved by the device]

However, when the driver descends from the driving part, the armrest (13) must be swung to the non-acting position in which the front part of the armrest (13) is raised upward, and therefore, the operation lever (14) is moved. There is a drawback in that the working device cannot be operated from the position where the driver has descended from the driving part due to the higher position.

An object of the present invention is to allow a driver to operate the operation lever even from a position where he / she descends from the driving part while not getting in the way of the operation lever when getting on / off the vehicle.

[Means for Solving the Problems]

According to the characteristic construction of the operating portion of the work vehicle in the present invention, a pivot shaft for pivotally supporting the armrest in a vertically swingable manner is arranged at the front portion of the armrest, and the armrest swings downward from its operating position. By setting the swing angle of the armrest so as to swing to the non-acting position where the operating lever is retracted rearward from the front end portion of the armrest, the action and effect are as follows.

[Action]

In other words, when the driver gets out of the driving part, the rear part of the armrest is pushed down around the pivot axis and rocked to the non-acting position, so that the operation lever is retracted rearward from the front end part of the armrest. Therefore, it is easy to get down without touching the operating lever, and the pivotal shaft is arranged in the front part of the armrest, so even if the rear part of the armrest is swung to the non-acting position, the height of the operating lever is increased. Does not change much.

[Effect of device]

Therefore, the driver can prevent a dangerous situation where he / she accidentally comes into contact with the operating lever to operate the work device when getting on / off the driving part, and while getting on / off safely, the height of the operating lever is not so high. Since it does not change, it is possible to operate the work device by operating the operation lever even from the position where the operator gets off the driving section, and in the end, it is possible to maintain high operability of the work vehicle while improving safety.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 3, a swivel base (2) is attached to a machine base equipped with a crawler type traveling device (1) so as to be swivelable around a longitudinal axis (P), and the swivel base (2) is attached to the swivel base (2). , An operation cabin (3) and a driving part (4) are provided, and a rocking operation excavating bucket (5) is attached to a tip end of the excavation work (6) that can be vertically swung and flexed. Revolving base (2) via swing bracket (7) that can be rocked
A dozer device (8) that can be freely moved up and down is provided at the front end of the machine and at the front end of the machine base, thereby constructing an excavation work vehicle capable of earth unloading work.

As shown in FIGS. 1, 2 and 4, a driver's seat (10) is arranged behind a pair of left and right traveling operation levers (9) in the structure of the driver section in the cabin (3). The supporting frames (11) are provided near the left and right sides of the driver's seat (10), respectively.
An armrest (13) for armrests that can swing up and down around a pivot shaft (12) provided in the arm is provided, and pilot operation is performed on a working device such as an arm (6), an excavation bucket (5), and a swivel base (2). The operation levers (14) are attached to the front ends of the armrests (13) in their respective operating positions so as to be capable of oscillating in a cross shape while projecting diagonally upward and forward, and the pivot shaft (12) is attached to the armrests (13). Placed on the front of the armrest (13)
Swings downward from its operating position (Fig. 1) to a non-operating position (Fig. 2) that retracts the operating lever (14) rearward of the front end of the armrest (13). ,
The swing angle of the armrest (13) is set.

That is, the armrest (13) and the support frame (11)
An unstable switching device (15) is provided to extend over the armrest (13) to switch the urging direction of the armrest (13) between the operating position side and the non-operating position side over the dead point (D).

In the figure, (16) and (16) are the unstable switching device (15), respectively.
It is a stopper that comes into contact with the armrest (13) to regulate the swing range of the armrest (13).

As shown in FIG. 1, the armrest (13) has a console box (17) for accommodating small articles therein, and an armrest portion (13a) at the upper part of the armrest (13) is vertically moved around a pivot (Q). It is also configured as a lid for a swingable console box (17).

[Another embodiment]

The armrest (13) is held at the working position and the non-working position by the unstable switching device (15) and the stoppers (16) and (16), and the armrest (13) is held at the working position and the non-working position. A holding member such as a catch member that engages and holds may be provided.

The operation lever (14) may be of a mechanical interlocking type that interlocks with the operating device operating valve via a release wire, in addition to the pilot operating type.

The present invention can be applied to work vehicles such as crane vehicles other than excavation work vehicles.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of the operating part of the work vehicle according to the present invention,
1 and 2 are side views of a main part with a part cut away, respectively.
FIG. 4 is an overall side view of an excavation work vehicle, FIG. 4 is a plan view of a driving unit, and FIGS. 5 and 6 are main part side views showing a conventional example. (10) …… Operating seat, (12) …… Pivot shaft, (13) …… Arm rest, (14) …… Operating lever.

Claims (1)

[Scope of utility model registration request] 1. A vertically movable armrest (13) is provided near the left and right sides of a driver's seat (10), and an operating lever (14) of a working device is provided with respect to a front end portion of the armrest (13) in a working position. A driving section of a work vehicle mounted so as to project to the front side, wherein a pivot shaft (12) pivotally supporting the armrest (13) in a vertically swingable manner is provided at a front portion of the armrest (13). So that the armrest (13) swings downward from its operating position to a non-operating position that retracts the operating lever (14) rearward of the front end of the armrest (13). The operating part of the work vehicle in which the swing angle of the armrest (13) is set.