JPH06219200A - Cab of construction machinery - Google Patents

Abstract

(57) [Summary] [Purpose] To easily stabilize the legs of the operator who sits down on the driver's seat device in the operator's cab of a construction machine and operates. [Structure] Brackets 17 provided with screw holes 17a are fixed to both outer side portions of an upper metal fitting 7a of a support leg 7 constituting a driver's seat device S, respectively. The bracket 17 has
An arm member 18 having strength and rigidity that is not deformed by human leg force is fixed by a screw 19. The screw 19 is fitted into the screw hole 17a of the bracket 17 through a long groove 18a provided in the arm member 18 in the front-rear direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cab for hydraulic excavators and other construction machines.

[0002]

2. Description of the Related Art FIG. 5 shows an example of a hydraulic excavator. A revolving unit 2 is rotatably mounted on a tracked traveling unit 1. A boom 4 that constitutes the work implement F is mounted on the front part of the revolving structure 2 so as to be capable of undulating, and a driver's cab 3 is installed on the side of the front part. An arm 5 is rotatably connected to the tip of the boom 4, and a bucket 6 is rotatably attached to the tip of the arm 5.

As shown in FIG. 6, a driver's seat device S is installed on the floor plate 3a of the cab 3. A seat 8 on which a driver M sits is attached to the support legs 7 that constitute the driver's seat device S, a backrest 9 is attached to a rear end portion of the seat 8, and an armrest 10 is attached to an intermediate portion of the backrest 9. Has been. Floor board 3a in front of driver's seat S
The operation levers 11 and 12 and the footrest 13 are installed in the section.

The operator M sits on the seat 9 and operates the operating levers 11 and 12 to perform excavation work by the bucket 6, turning of the swinging body 2, and traveling operation of the traveling body 1.
The operator M receives various vibrations transmitted from the vehicle body during the work, and the stability of the operator M against the vibrations is provided by the seat 8, the backrest 9, the armrests 10, the footrests 13 and the floor plate 3a. In addition, the support leg 7, the seat 8,
The backrest 9 and the armrest 10 are provided with an adjusting mechanism so as to match the physique of the operator M.

[0005]

In the cab 3 described above, the legs of the operator M can rotate about the straight line 16 connecting the point 14 on the seat 8 side and the point 15 on the footrest 13 side as an axis. It is unstable. Therefore, the operator M needs extra force to stabilize the legs, and fatigue is accelerated. In addition, the upper body cannot be stabilized due to the instability of the legs, which adversely affects the operation of the operation levers 11 and 12 and reduces work efficiency. The present invention has been made in view of this, and an object of the present invention is to provide a driver's cab provided with a leg stabilizing device that can very easily stabilize the legs of a driver.

[0006]

The driver's cab of the present invention is characterized in that a leg stabilizing device having arm members for pressing the knees of a driver or the vicinity thereof is installed. The arm member is configured so that its position can be changed according to the physique of the operator and can be stored so as not to hinder the operator from getting on and off.

[0007]

The operator who sits down on the seat of the driver's seat device stabilizes the knee part or its vicinity by pressing it against the arm member.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described. In these drawings, the same members as those in FIG. 6 are designated by the same reference numerals. In this embodiment, a leg stabilizing device is attached to the driver's seat device S.

On both outer sides of the upper metal fitting 7a of the support leg 7,
A bracket 17 provided with a screw hole 17a is fixed to the bracket 17, and an arm member 18 having strength and rigidity not to be deformed by human leg force is attached to the bracket 17.
It is fixed by. The screw 19 is fitted into the screw hole 17a of the bracket 17 through a long groove 18a provided in the arm member 18 in the front-rear direction. A cushion 20 made of a non-slip material is attached to the inner side surface of the arm member 18.

With the above-described structure, the arm member 18 can be arbitrarily moved in the front-rear direction and can be tilted up and down. Therefore, the arm member 18 can be adjusted to a desired position of the operator M, and For example, it can be stored on the side of the seat 8 so as not to interfere with getting on and off. Further, the cushion 20 causes friction between the leg portion of the operator M and the arm member 18, so that the operator's forward and backward movement can be restricted. The same effect can be obtained even if a ball joint or the like is adopted as the adjusting mechanism of the arm member 18.

[0011]

According to the present invention described above, the legs of the operator can be stabilized very easily and the fatigue of the operator can be reduced.
And work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a sectional side view taken along the line AA of FIG. 2 showing an embodiment of the present invention,

FIG. 2 is a plan view seen from the ceiling side in FIG.

FIG. 3 is an enlarged view showing an arm member of FIG. 1 and its vicinity.

FIG. 4 is a plan view of FIG.

FIG. 5 is a side view showing an example of a hydraulic excavator,

FIG. 6 is a sectional side view showing a cab of a conventional hydraulic excavator.

[Explanation of Codes] 3 Driver's cab 3a Floor plate 7 Support legs 7a Upper bracket 8 Seat 17 Bracket 17a Screw hole 18 Arm member 18a Long groove 19 Screw 20 Cushion

Claims (3)

[Claims] 1. A construction machine in which a driver's cab is installed on a machine body, and a leg stabilizer having an arm member for pressing an operator's knee or its vicinity is installed. 2. The cab according to claim 1, wherein the position of the arm member can be changed according to the physique of the operator. 3. The driver's cab according to claim 1, wherein the arm member can be stored so as not to interfere with getting on and off the operator.