JP2000154560A - Step-cum-tool box device for construction machinery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a step-cum-tool box device appropriate to middle- and small-sized construction machinery. SOLUTION: An opening 6 is formed at part of the peripheral wall of the box-shaped section part of a main frame 3 forming an upper swivel body and, to the opening part 6, an opening/closing lid 8 is attached so as to oscillate at an open position in a roughly horizontal condition from a closing condition. Inside the opening/closing lid 8, a step 13 is mounted rotatable to a storage position and a using position protruded from the open end of the opening/closing lid 8. The opening/closing lid 8 is formed with a fixing member for holding it at a closing condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a step and tool box device suitable for a construction machine such as a hydraulic shovel.

[0002]

2. Description of the Related Art FIGS. 13 and 14 show an example of a conventional hydraulic excavator. An upper revolving unit 2 having a main frame 3 is mounted on a lower traveling unit 1 so as to be pivotable. In such a hydraulic excavator, generally, FIG.
As shown in FIG. 4, the tool box 4 is installed on the left main frame 3 when viewed from the front.

[0003]

In the above-mentioned prior art, the capacity of the tool box is insufficient, and there is no scaffold for cleaning the front window of the cab 5, which is inconvenient. Small and medium-sized hydraulic excavators can be wiped from the ground, but those with a class of about 30 tons or more are difficult to reach. In addition, if a step is provided below the front window, visibility may be impaired when digging deeply, and in a narrow place, there is a risk of hitting an obstacle and breaking it. An apparatus for fixing the step to the use position by projecting the step outward from the storage position in the vehicle body is disclosed in Japanese Utility Model Laid-Open No. 7-20344.

[0004] It is an object of the present invention to provide a step and tool box device which can solve the above-mentioned problems.

[0005]

According to the present invention, there is provided a step and tool box device for a construction machine, wherein an opening is provided in a part of a peripheral wall of a box-shaped cross section of a main frame constituting an upper revolving unit, and the opening is provided in the opening. A step for attaching an opening / closing lid so as to be able to swing from a closed state to an opening position in a substantially horizontal state, and rotating the inside of the opening / closing lid between a storage position and a use position where the opening / closing lid protrudes from the open end. Attach,
The opening / closing lid is provided with fixing means for holding the lid in a closed state.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In these figures, the same reference numerals as those in FIGS. 13 and 14 indicate the same parts.

An opening 6 is provided in a part of the main frame 3 below the front window of the cab 5, and brackets are provided on left and right portions of the main frame 3 on the lower edge side of the opening 6. 7 is fixed by welding. Bracket 7
An opening / closing lid 8 is attached to the main body by a bolt 9 so as to be swingable. The key cylinder 1 is located above the opening / closing lid 8
A lock plate 11 is provided on the inner side of the opening / closing lid 8 so as to rotate via a key cylinder 10. Hook plate 1 on main frame 3 on the upper edge side of opening 6
The opening / closing lid 8 is held in a closed state by hooking 1.

[0008] Brackets 12 are fixed to the left and right upper portions inside the opening / closing lid 8 by welding, and the brackets 13 are attached to the brackets 12 via bolts 14 so that the steps 13 can be rotated. To the lower part of the main frame 3 on the lower edge side of the opening 6, a stop plate 15 for fixing the opening / closing lid 8 by hooking the lower end edge of the opening / closing lid 8 when the opening / closing lid 8 is open is attached.

The box-shaped cross section of the main frame 3 inside the opening / closing lid 8 forms a tool box, in which tools, wiping tools and the like are stored.

When the cover 8 is opened from the closed state shown in FIGS. 3 to 5, a key is inserted into the key cylinder 10, and the key is turned to rotate the latch plate 11 to a position shown by a chain line in FIG. As a result, the opening / closing lid 8 can be unlocked and swing. FIG. 11 shows a state where the opening and closing lid 8 is started to swing in the opening direction with the bolt 9 as a fulcrum. FIG. 12 shows that the opening and closing lid 8 is further swung so that the lower end edge of the opening and closing lid 8 is hooked on the stop plate 15. FIG. 9 shows a state immediately before, and FIG. 9 shows a state in which the lower end edge of the opening / closing lid 8 is hooked and held by the restraining plate 15 and the step 13 is pivoted about the bolt 14 to the projecting side. In this state, open / close lid 8 and step 13
Is held substantially horizontal, and a scaffold is formed.

[0011] In the small swing type hydraulic excavator, the upper swing body 2
The above-mentioned step-and-use tool box device can be provided on the side opposite to the operator's cab side.

[0012]

According to the present invention described above, it is possible to easily eliminate the insufficiency due to the lack of the capacity of the tool box and the lack of a scaffold when wiping the front window of the cab. Even if it is provided, it is possible to prevent obstruction of the field of view during deep digging work and to obtain a good appearance.
Further, in the small turning construction machine, the tool box can be provided at an easy-to-use position.

[Brief description of the drawings]

FIG. 1 is a side view of a hydraulic shovel provided with a step-and-use tool box device according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a front view showing an embodiment of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a rear view taken along the line BB of FIG. 4;

FIG. 6 is a sectional view taken along the line CC of FIG. 5;

FIG. 7 is a sectional view taken along line DD of FIG. 5;

FIG. 8 is a front view showing a state in which an opening / closing lid is opened, and a step is turned to protrude to a use state.

FIG. 9 is a sectional view taken along the line EE of FIG. 8;

FIG. 10 is a plan view of FIG. 8;

FIG. 11 is a cross-sectional side view showing a state where the opening / closing lid starts to open.

FIG. 12 is a cross-sectional side view showing a state immediately before the opening of the opening / closing lid is completed.

FIG. 13 is a side view showing an example of a conventional hydraulic excavator.

FIG. 14 is a front view of FIG.

[Explanation of symbols]

 2 Upper revolving structure 3 Main frame 6 Opening 7 Bracket 8 Opening / closing lid 9 Bolt 10 Key cylinder 11 Hook plate 12 Bracket 13 Step 14 Bolt 15 Stop plate

Claims (4)

[Claims] An upper revolving structure is provided on a lower traveling structure so as to be revolvable, and an opening is provided in a part of a peripheral wall of a box-shaped cross section of a main frame constituting the upper revolving structure. The opening and closing lid is attached to the part so that it can swing from the closed state to the opening position in a substantially horizontal state, and the inside of the opening and closing lid can be rotated between a storage position and a use position where it protrudes from the open end of the opening and closing lid. A step box tool for a construction machine, wherein a step capable of being attached is provided, and a fixing means for holding the open / close lid in a closed state is provided. 2. The tool box device for a step machine of a construction machine according to claim 1, wherein a stop plate for stopping the opening / closing lid at an open position is provided on the rotating body. 3. The construction according to claim 1, wherein the opening and closing lid is provided with a locking plate for locking the opening and closing lid to the revolving structure and a key cylinder for locking and releasing the locking plate. Tool box device for step and machine. 4. A tool box device for a step machine of a construction machine, wherein the opening is formed in a peripheral wall of a box-shaped cross section of a main frame located below a cab installed on an upper revolving superstructure.