JPH10121520A - Floor of construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operation efficiency at a maintenance work, by dividing a floor plate into the side floor plate of the operating section and a floor plate of the entrance and a seat section and detachably laying them in the front and rear direction of the machine base. SOLUTION: When hydraulic machine are required to separately maintain for repair or inspection, the front plate 8a, the intermediate plate 8b, and the rear plate 8c divided and laid at the upper part corresponding to the instruments are separately removed by loosing the fitting screws 80 to simply and easily carry out the maintenance works of the required positions. Since the floor plate is divided into three or more parts in the front and rear direction of the operating section, the structures of the front operating section, the seat section 5a, etc., for instance installed on respective floors can be separately arranged against the divided floor plates, and also the operating section can be easily produced and assembled. And since the intermediate plate 8b can be miniaturized, the mold can be minimized and the plastic molding is simplified and the cost is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a control section floor of a working machine such as a power shovel.

[0002]

2. Description of the Related Art Conventionally, a control section of a power shovel is provided with a front floor plate forming a steering section and a boarding / alighting space section in front of a flat framed machine base, and further connected to the front floor plate. It is constructed by laying a rear floor panel on which a seat section is installed behind. Also, inside the machine base, a hydraulic switching valve, a hydraulic motor, a piping device, a harness, and the like, which operate various working units by using the framework structure, are disposed.
The maintenance work such as repair and inspection is configured to be performed from the opening holes provided with the cover plates provided on the front floor plate and the rear floor plate.

[0003]

However, in the control section floor having the above-mentioned conventional structure, the lid provided in the opening hole must be removed especially when maintenance work of the hydraulic switching valve portion is performed. Since the opening cannot be so large in the front floor plate, there is a drawback that the maintenance work is restricted and the work is difficult to perform.

Further, in addition to the opening holes, various holes for inserting a steering lever, a pedal, and the like must be formed in the wide front floor plate. There is a problem that the assembling work is heavy and complicated.

[0005]

A steering floor of a working machine according to the present invention for solving the above-mentioned problems of the prior art comprises a steering section 5 on a floor plate 8 laid on the machine base 2 from the front.
d, the boarding / alighting space section 5K and the seat section 5a, the floor plate 8 is divided into a steering section side floor board 8a, a boarding / alighting section floor board 8b and a seat section floor board 8c, and is formed in the front-back direction of the machine base 2. Removably laid and fixed.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a power shovel shown as an example of a working machine, and a shovel 4a and the like via a mounting bracket (swing post) 3 in front of a machine base 2 rotatably provided on a base 1b of a crawler type traveling device 1a. The working unit 4 is provided, and a control unit 5 and a tank unit 6 are provided on the left and right sides of the machine width, and a prime mover 7 is sequentially arranged.

The control section 5 is provided with a seat portion (seat) 5a in the center of the rear of a floor plate (floor) 8 which is detachably laid on the upper part of the machine base 2, and the control supports provided on the machine base 2 on both sides thereof. Operation levers 5L and 5R for operating the working unit 3 and the gantry 2 are installed on the frames 5b and 5c, and the body is steered to the front end of the gantry 2 in front of the seat 5a and across the boarding space 5K. A running lever 5S for operation is erected upward, and a front steering unit 5d provided with a foot pedal 5F for operating an attachment working machine (not shown) and the like is provided beside the base.

As shown in FIGS. 3 and 4, the floor plate 8 is
A frame 2F framed on a square of the machine base 2 is divided into three parts in the front-rear direction: a front plate (steering unit side floor plate) 8a, a middle plate (board / disc unit side plate) 8b, and a rear plate (seat unit side plate) 8c. Each is detachably fixed by a mounting screw 80. Further, in the framework of the frame 2F covered by the floor plate 8 of the machine base 2, a hydraulic switching valve 9 for operating the working unit 4 and the like is mounted on the left side by the same arrangement as the conventional one, and The rotary joint 9a and the machine base 2 from the front,
Swing motor 9b that rotates right and left around b
And these hydraulic piping and electric harness are installed.

If it is desired to perform maintenance work such as repair or inspection of these hydraulic devices or the like individually,
A front plate 8a divided and laid on the upper portion facing the
Maintenance work at desired locations can be performed simply and easily by removing the middle plate 8b and the rear plate 8c separately by loosening the mounting screws 80. For example, when performing maintenance work on the hydraulic switching valve 9, the front plate 8a or the middle plate 8b is detached separately or simultaneously, and the upper part thereof is widely opened. By removing only the middle plate 8b, the maintenance work of the rotary joint 9a can be performed with its upper part wide open, and the maintenance work of the swing motor 9b can be performed by removing only the rear plate 8c. It can be opened to facilitate work.

As described above, according to the present invention, any of the front plate 8a, the middle plate 8b, and the rear plate 8c facing each part to be subjected to the maintenance work can be freely removed by the above configuration. Therefore, unlike the conventional apparatus, an opening hole with a cover plate is not formed in the floor plate 8 and a desired internal portion of the machine base 2 can be opened widely in the width direction. Can be performed simply and easily.

The floor panel 8 is divided into three or more in the front-rear direction of the steering section 5 as described above, and is formed on each floor panel 8 so as to be installed on each floor panel 8, for example, a front steering section 5d,
Since the mechanisms such as the seat portion 5a can be individually arranged on the subdivided floorboard 8, the control section 5 can be easily manufactured and assembled. That is, when the foot cover 82 and the pedal cover 83 are assembled in advance as shown in FIGS. 5 and 4, the front plate 8a is connected to the hydraulic switching valve 9 via the link mechanism 93, and is connected to the machine base 2. It can be mounted as a single unit with the mounting screw 80.

The middle plate 8b may be formed of the same steel plate as the front plate 8a. However, since the middle plate 8b is used as a foot floor, an uneven pattern for preventing slippage is formed on the surface, or a predetermined rigidity is obtained. It is preferable to provide a rib or the like to the thickness of the metal plate and integrally form the rib with a plastic material. Since the intermediate plate 8b alone can be downsized, the mold can be downsized and the plastic can be formed easily and at low cost.

The rear plate 6 has a single seat portion 5a in the configuration shown in FIGS. This seat part 5
a, a seat frame 50 having an inverted U-shape in front view is fixed to the center of the rear plate 8c, and a slide table 52 is mounted on the upper portion of the seat frame 50 via two slide fixing rails 51, 51.
And the slide portion 52 is provided with a sheet portion 5a.
The seat seat 56 having the elongated hole 55 opened is attached to the mounting screw 57
At 7 it is mounted so that it can be moved back and forth. The control units 5b and 5c are mounted on the slide table 52 on both sides of the seat 5a.

With the above configuration, the driver adjusts the distance to the operation levers 5L and 5R through the long holes 55 according to the height and the body shape, and adjusts the distance to the front steering section 5d through the slide fixed rail 51. It can be adjusted and can be easily operated with good operability.

[0015]

According to the present invention, the floorboard to be laid on the control section is formed into at least three sections: the steering section side floorboard, the boarding section floorboard, and the seat section floorboard, and is detachably attached to the machine base in the front-rear direction.
The maintenance work can be performed efficiently and easily because the large maintenance work opening can be easily opened by removing each floor plate at each place where maintenance work is required, such as a hydraulic switching valve in the machine base. In addition, there is an advantage that processing and assembly of each floorboard can be easily performed.

[Brief description of the drawings]

FIG. 1 is a side view of a power shovel.

FIG. 2 is a plan view of a main part of FIG.

FIG. 3 is a plan view showing a floor panel configuration of a control unit.

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a side view of a machine base and a floor plate.

FIG. 6A is a plan view of a seat portion, and FIG. 6B is a front view of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Power shovel (working machine) 2 Machine stand 5 Steering part 5a Seat part 5d Steering part 5K Boarding space part

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Kento Hayashi 667, Iya-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane 1 Mitsubishi Aki Machinery Co., Ltd.

Claims (1)

[Claims] 1. A working machine comprising a steering section 5d, a boarding / alighting space section 5K and a seat section 5a from the front on a floor panel 8 laid on a machine base 2, wherein the floor panel 8 is connected to a steering section side floor panel 8a.
And a control floor of the working machine, which is formed separately from the floor board 8b and the floor board 8c and the seat floor board 8c, and is detachably fixed in the front-rear direction of the machine base 2.