JP2001063464A - Construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction machine capable of confirming visually a front lower part of a turning body positioned in a side opposed to a cab in a condition seated on an operation seat, and capable of enhancing safety at the time of traveling and working. SOLUTION: A mirror 18 is attached to an outer front side of a cab 4, and an operator 6 seated on an operation seat 5 confirms visually a front lower part of a turning body 3 positioned in a side opposed to the cab 4, in this construction machinery in which the turning body 3 is provided in upper parts of crawler belts 1, 2, in which a working equipment is arranged in the turning body 3, in which the cab 4 is arranged in one side of the working equipment, and in which the operator 6 seated on the operation seat 5 inside the cab 4 controls the crawler belts 1, 2, the turning body 3 and the working equipment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction machine such as a power shovel and the like.
The present invention relates to a construction machine provided with a viewing mirror for confirming the safety of the surroundings when traveling or the like.

[0002]

2. Description of the Related Art A construction machine is a kind of traveling vehicle.
There are mirrors provided with a rear view mirror (side mirror) for confirming safety behind the vehicle when traveling (see, for example, JP-A-8-310300).

[0003]

Since the construction machine moves on the work site, it is necessary to run the construction machine while checking the course so that the construction machine does not fall into a depression or a groove. However, construction machines are different in structure from general vehicles such as automobiles, and therefore there are places where the operator cannot easily see from the driver's seat even on the front side.

A general construction machine is configured such that a revolving body is provided on an upper part of a traveling body, a work machine is arranged on the revolving body, and a cab is arranged on one side of the work machine. And controls the traveling body, the revolving superstructure, and the working machine. In such a construction machine, a part of the working machine (boom, etc.) is placed next to the cab, that is, next to the driver's seat.
Is present, there is a problem that when the operator is seated in the driver's seat, he cannot see the lower front part of the revolving superstructure located on the opposite side to the cab. In other words, it is not possible to see the surroundings located at the lower front part of the running body when traveling, and at the lower front part of the revolving body during work. In this case, it is possible to see if the operator leans out of the driver's seat and looks into the driver's seat.However, in this state, it is impossible for the operator to operate the vehicle or operate the work equipment, which may cause a driving error or an operation error. Therefore, the security is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and an object of the present invention is to visually recognize a lower front portion of a revolving structure located on the opposite side of a cab while sitting in a driver's seat. An object of the present invention is to provide a construction machine capable of improving safety during traveling and work.

[0006]

Means and Effects for Solving the Problems Claim 1
Is provided with a revolving superstructure 3 above the traveling bodies 1 and 2,
A work machine is arranged on the revolving superstructure 3, and a cab 4 is arranged on one side of the work machine.
The operator 6 who is seated on the vehicle 1
And a construction machine for controlling a working machine,
A mirror 18 is attached to the outside front of the cab 4 so that an operator 6 seated in the driver's seat 5 can visually recognize the lower front part of the revolving unit 3 located on the opposite side to the cab 4 using the mirror 18. It is characterized by.

According to the construction machine of the first aspect, the operator 6 operates the mirror 1 mounted on the outside front of the cab 4.
Even when the driver 8 is used to sit on the driver's seat 5, the lower part of the front surface of the revolving structure 3 located on the opposite side to the cab 4 can be visually recognized. Therefore, the operator 6 can confirm the course of the traveling body located at the lower front part of the revolving superstructure 3 when traveling, while maintaining the posture during normal driving, and at the lower front of the revolving superstructure 3 during work. Since the surrounding situation located in the part can be checked, no driving error or operation error occurs, and the safety of the construction machine when traveling and working is improved.

[0008] In the construction machine according to claim 2, the mirror 1 is provided.
Numeral 8 is rotatably mounted and its posture is adjustable, so that the operator 6 can also be used as a rear view mirror for viewing the rear of the construction machine.

According to the construction machine of the second aspect, the mirror 18 for visually recognizing the front can be used also as a mirror for visually recognizing the rear, so that the operator 6 can easily check the rear, and can be used for traveling and working. Safety is improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a specific embodiment of a construction machine according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a top view of a construction machine according to an embodiment of the present invention, and FIG. 2 is a side view of the construction machine.

The construction machine includes a pair of crawler tracks 1, which are running bodies,
A revolving unit 3 is provided on the upper part of the work 2, and a working machine (not shown) is arranged on the revolving body 3, and a cab 4 is arranged on one side of the working machine. A driver's seat 5 is formed in the cab 4, and an operator 6 sits on the driver's seat 5, and operates an operation lever 7 and an operation pedal 8 disposed on the front side of the driver's seat 5, and the crawler 1 2, revolving superstructure 3
And control the operation of the working machine.

The cab 4 has windows 9 and 10 formed on the front side and left side of the operator seated on the driver's seat 5. Transparent tempered glass or the like is fitted into the windows 9 and 10, and the operator 6 can directly see the front and left sides through the windows 9 and 10 while sitting in the driver's seat 5. In the following description, the terms “front, rear, left and right” refer to the direction as viewed from the operator 6 seated on the driver's seat 5. Also, cab 4
A mirror device 11 is mounted on the outside front and on the left side. This mirror device 11 is used by the operator 6
Is for observing a direction that cannot be directly viewed when the driver is seated in the driver's seat 5.

FIG. 3 is a perspective view of the mirror device 11,
FIG. 4 is a top view of the mirror device 11, and FIG. 5 is a side view of the mirror device 11. The mirror device 11 is attached using an attachment portion 13 of a handle 12 attached to the front outside of the cab 4 and on the left side. That is, the handle 12 is arranged to extend in a substantially vertical direction, and the flat mounting portion 13 connected to the upper end thereof is fixed to the left portion of the cab 4 by tightening two upper and lower portions with bolts. I have. The handle 12 is gripped by the operator 6 when getting on and off the cab 4. Therefore, the mirror mounting bracket 14 is disposed so as to overlap the mounting portion 13, and the upper and lower portions together with the mounting portion 13 are fixed together by bolts. Note that the mirror mounting bracket 14 has a flat stay mounting portion 15 on its upper portion, and the stay mounting portion 15 is fixed so as to be horizontal.

On the other hand, the elongated rod-like stay 16 generally comprises a horizontal portion 16a, an inclined portion 16b, and a vertical portion 16c. A mounting plate 17 is attached to the horizontal portion 16a, and a tip of the vertical portion 16c is provided. Is mounted with a mirror 18, and the horizontal portion 16a and the vertical portion 16c are
b. The mounting plate 17 is disposed so as to overlap the stay mounting portion 15, and is bolted so as to be rotatable about a vertical rotation axis. As a result, the stay 16 can be rotated together with the mirror 18, and the mirror 18 is moved to the cab 4.
Can be arranged on the front side or the left side.

The mirror 18 is provided with a vertical portion 16c of the stay 16.
Attached so that it can rotate around. The reflection surface of the mirror 18 is substantially rectangular and has a convex shape with a central portion protruding. Further, the normal direction of the central portion of the reflecting surface is inclined slightly downward from the horizontal direction.

In the mirror device 11 configured as described above, the mirror 18 is disposed in front of the cab 4 and
By appropriately adjusting the attitude of 8 (the direction of the reflecting surface), the lower part of the front surface of the revolving unit 3 opposite to the cab 4 is projected on the reflecting surface of the mirror 18 over the range W1. Therefore, the operator 6 turns the line of sight to the mirror 18 while sitting in the driver's seat 5 to
In FIG. 1, the lower part of the front surface of the revolving structure 3 can be visually recognized. By setting the position of the mirror 18 on the front side within the turning radius R of the turning body 3, the construction machine can be operated or transported without worrying about the mirror 18. That is, the position on the front side of the mirror 18 corresponds to the storage position.

The mirror 18 is disposed on the left side of the cab 4 and the posture of the mirror 18 (the direction of the reflecting surface) is appropriately adjusted so that the rear of the operator 6 can be placed on the reflecting surface of the mirror 18 over a range W2. It is projected. Therefore, the operator 6 can visually recognize the rear in the visual field S2 by turning his or her line of sight to the mirror 18 while sitting in the driver's seat 5.

As described above, according to the present embodiment, the operator 6 is located on the opposite side to the cab 4 even while sitting in the driver's seat 5 using the mirror 18 attached to the front outside of the cab 4. The lower part of the front surface of the revolving unit 3 can be visually recognized. Therefore, the operator 6 can confirm the course of the crawler belt 1 located at the lower front part of the revolving unit 3 when traveling, while maintaining the posture during normal driving, and lower the front surface of the revolving unit 3 during work. Because you can check the surrounding situation located in the part, there is no driving mistake or operation mistake,
The safety at the time of traveling and working of the construction machine is improved.

Further, since the mirror 18 can also be used as a rear view mirror, the operator 6 can easily check the rear, and the safety of the construction machine when traveling, particularly when traveling backward, is improved.

Further, since the mirror device 11 is mounted using the mounting portion 13 of the handle 12, it can be retrofitted without changing the specifications of the construction machine. Also, 2
If the mirror devices 11 are attached, the movement and adjustment of the mirror 18 become unnecessary, and the convenience is improved.

The mounting structure of the mirror device 11 is as follows.
Various configuration examples are conceivable. For example, in the configuration example shown in FIG. 6, the mounting portion 19 of the handle 12 is a member having a substantially L-shaped vertical cross section including a horizontal portion 19a and an upright portion 19b extending upward, and the lower surface of the handle 12 is provided on the lower surface of the horizontal portion 19a. The upper end is joined, and the standing portion 19b is fixed to the side of the cab 4. And
The upper surface of the horizontal portion 19a is the stay mounting portion 15, and the mounting plate 17 of the stay 16 is mounted on the stay mounting portion 15.

In the configuration example shown in FIG. 7, a mirror mounting bracket 20 is provided above the mounting portion 13 of the handle 12. The mirror mounting bracket 20 includes a vertical portion 20a.
And a horizontal portion 20b connected to the upper end thereof. The vertical portion 20a is joined to a side portion of the cab 4 by welding or the like, and the upper surface of the horizontal portion 20b serves as a stay mounting portion 15. The mounting plate 17 of the stay 16 is mounted on the stay mounting portion 15.

However, in the mounting structure shown in FIGS. 6 and 7,
Since the appearance without the mirror device 11 attached is not good, the attachment structure shown in FIG. 3 is more desirable.

[Brief description of the drawings]

FIG. 1 is a top view of a construction machine according to an embodiment of the present invention.

FIG. 2 is a side view of the construction machine.

FIG. 3 is a perspective view of a mirror device.

FIG. 4 is a top view of the mirror device.

FIG. 5 is a side view of the mirror device.

FIG. 6 is a perspective view showing a mounting structure of the mirror device.

FIG. 7 is a perspective view showing a mounting structure of the mirror device.

[Explanation of symbols]

 Reference Signs List 1 track 2 track 3 revolving superstructure 4 cab 5 driver's seat 6 operator 11 mirror device 18 mirror

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tsuji Kadodo 3-1-1 Ueno, Hirakata-shi, Osaka Prefecture F-term in the Komatsu Manufacturing Osaka Plant (reference) 2D015 EA02 3D053 FF12 FF14 GG04 GG14 HH52 JJ27

Claims (2)

[Claims] 1. A revolving unit (3) is provided above a traveling unit (1) (2), a working machine is arranged on the revolving unit (3), and a cab (4) is provided on one side of the working unit. An operator (6) arranged and seated on a driver's seat (5) in the cab (4) controls the traveling units (1) and (2), the revolving unit (3), and a working machine. A mirror (18) is attached to the outside front of (4), and this mirror (1) is mounted.
8) the operator (6) seated in the driver's seat (5) can visually recognize the lower front part of the revolving superstructure (3) located on the opposite side to the cab (4). And construction machinery. 2. The mirror (18) is rotatably mounted and its posture is adjustable, and the operator (6) can be used as a rear view mirror for viewing the back of the construction machine. Claim 1 characterized by the following:
Construction machinery.