JPH08284195A - Structure of multipurpose-type front structural frame - Google Patents

Abstract

PURPOSE: To sufficiently secure a space for storing small articles and a space for arranging a horn, and to facilitate the work of repairing partitions in a working part-supporting member of a front structural frame, by a method wherein part of a specified surface of a box-shaped member of the front structural frame is cut out, and an openable cover is attached thereto. CONSTITUTION: Cutout parts to be used as opening parts are formed in the vicinity of a partition 13a being to the foot side of a lower plate of a boom 10, in the vicinity of a partition 13b being to the side of an arm 11, and in the vicinity of the arm 11, and plate-like covers 12a, 12b, 12c each are fastened to the cutout parts with bolts 15. Handles 16 are provided on the covers 12a, 12b and a plurality of slits are formed on the plate-like cover 12c. A box 18 is formed at the inside of the vicinity of the cutout part on the foot side out of a thin plate and its inside is used as a storing space for small articles 9. Furthermore, at the inside of the vicinity of the cutout part near the arm 11, a horn 7 is provided so that a speaker part is directed toward the slits on the plate-like cover 12c through a bracket 70.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved structure of a front structure in a construction machine having a front structure represented by a hydraulic excavator.

[0002]

2. Description of the Related Art A construction machine generally has a structure including a traveling section including a traveling vehicle and a front structure including a working section, and a typical example thereof is a hydraulic excavator.

FIG. 4 is a rear perspective view showing the outline of the entire hydraulic excavator, and as shown in the drawing, the lower traveling body 3 is used.
The upper revolving superstructure 2 that swivels is provided above the front revolving superstructure 2, and the front structure 1 including the bucket 4 is located in front of the upper revolving superstructure 2.

[0004]

By the way, in a construction machine equipped with a front structure 1 such as a hydraulic excavator, it is convenient if the vehicle body is provided with a storage space for storing small items such as grease packs and tools. Therefore, in the hydraulic excavator, the storage part 6 may be provided in a part of the upper swing body 2. In the example shown in FIG. 4, it is provided at the end of the upper swing body 2 opposite to the cab 5,
As shown in FIG. 5, a box structure with an opening / closing upper lid (in the figure, 60 is an upper lid) and a drawer type box structure are adopted.

However, when providing such a storage unit 6 in the vehicle body, as is clear from the size of the storage unit 6 shown in FIG. It was difficult for me to have.

Next, in the construction machine equipped with the front structure 1, the horn used for warnings and cues is attached so as to be hidden. For example, in the case of a hydraulic excavator, as shown in FIG. 6, the horn 7 is attached to the upper revolving structure 2 below the foot (root) of the boom 10 forming the front structure 1 so that only the speaker is exposed (here, the notch is provided). Is attached to the divider plate 20 having a portion via a bracket, and the speaker portion has a structure in which the face is exposed from the cutout portion).

However, as is clear from the example of the hydraulic excavator shown in FIG. 6, although the horn 7 is an important constituent member in the construction machine, it must be mounted so as to be hidden in consideration of the appearance of the vehicle. For this reason, it is difficult to find an appropriate mounting position, and this problem is particularly noticeable in small construction machines.

Next, the members constituting the front structure 1 of the construction machine are generally a working part such as a bucket 4 and a boom.
It consists of a working unit support such as 10 and arm 11. And
The boom 10, the arm 11, etc., which are the working portion supporting portions, are formed in a box-like shape composed of upper and lower plates and side plates (generally a BOX).
A structure is used). However, since a torsional load is applied to these work supporting parts, in order to secure the strength, partition walls (shown in FIG. 1) are provided between the upper and lower plates and the side plates inside the housing.
13) is welded and attached for reinforcement.

However, such a partition wall is often provided at a critical position in terms of strength, and therefore it is necessary to check whether or not a crack has occurred therein. After a manhole-type hole was opened in the side plate near the partition wall for welding and repairing, it was necessary to weld the plate member to close the hole by closing the hole, which was very complicated work.

The present invention was devised in view of the above problems of the prior art, and can sufficiently secure a storage space for small items or a space for arranging horns, and a partition wall in the working portion support member of the front structure. The purpose of the present invention is to provide a structure of a multi-purpose front structure that can be easily repaired.

[0011]

Therefore, in the multipurpose front structure structure according to the present invention, a part of the predetermined surface of the housing-shaped member is cut out, and the openable and closable lid is attached thereto. Characterize.

Here, the box-shaped member refers to a member having an internal space formed by upper and lower plates, side plates and the like, and examples thereof include a boom and an arm. Further, as the structure of the lid, as long as it is opened and closed by some means, such as a hinged door as shown in FIG. 5 or a bolted one as shown in FIG. 1 described later. Various aspects are included.

Further, in the above construction, if the notch where the lid is attached is located near the partition wall in the housing-shaped member, the convenience of the partition repair work is further improved.

[0014]

To form the structure according to the present invention, it is sufficient to cut out one or both of the upper and lower plates and side plates of the housing-shaped member, or to cut two or more surfaces and attach a lid that can be opened and closed.

Therefore, the cost and labor required for the formation are extremely small, and it can be easily applied to the construction machine used conventionally.

When the structure according to the present invention is used as a storage space, when the lid is opened, the notch becomes an opening, and the inside of the case-shaped member becomes a space,
It is only necessary to insert a small article or the like from the cutout portion and place it in the inside.

Further, since the horn can also be easily inserted from the notch, it can be mounted and fixed in the internal space, and can also be used as a mounting location for the horn. However, in that case, it is preferable to form a slit or the like through which a sound can pass on a predetermined surface.

Furthermore, since it is possible to open the lid and see the inside of the housing-shaped member from the notch, it is possible to easily inspect the partition to be attached as a reinforcement and even if a crack is generated there. The welding repair work can be performed as it is.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the structure according to the present invention will be described with reference to the drawings. The present invention is not limited to the following examples.

1 to 3 show a boom 10 of a hydraulic excavator.
FIG. 1 shows a side view of the front structure 1 around the boom 10, FIG. 2 is a view taken along the line AA in FIG. 1, and FIG. 3 is a view showing an example in which the structure according to the present invention is applied. It is a BB arrow line view.
In the figure, 7 is a horn, 8 is a cylinder, 11 is an arm, 12a, 12
b and 12c are lids, and 13a and 13b are partition walls. It goes without saying that the boom 10 in the present embodiment has a box-like shape including upper and lower plates and side plates.

In this embodiment, in the lower plate of the boom 10, the partition wall 13a near the foot (root) side and the partition wall 1 on the arm side are provided.
Notches that become openings at 3 locations near 3b and near arm 11
14a, 14b, 14c are provided. Then, the cutout portions 14a, 14
Plate-shaped lids 12a, 12b, 12c, which are slightly larger than the b and 14c, are fixed by bolts 15. Of the lids 12, the lids 12a and 12b are planar and have handles 16 at both ends, and the lid 12c has no handles but has a plurality of slits 17 formed therein.

Inside the vicinity of the cutout 14a, a housing 18 is formed of a thin plate on the side opposite to the partition wall 13a, and the inside thereof serves as a storage space for small articles 9 such as a grease replenishing cartridge and a tool. In FIG. 1, the small article 9 housed in the housing 18 has both ends thereof held down by the bands 19 fixed to the upper surface of the lower plate. When taking out this accessory 9, of course the bolt
15 may be removed, the lid 12a may be opened, and the band 19 may be removed and taken out.

Inside the vicinity of the cutout portion 14c, a horn 7 is installed via a bracket 70 so that the speaker portion faces the slit 17 of the lid 12c. The entire body of the horn 7 is inside the boom 10 and cannot be seen from the outside at all, but its sound can be heard outside through the slit 17 of the lid 12c.

Inside the vicinity of the cutouts 14a, 14b, there are partition walls 13a, 13b for reinforcing the boom 10. For checking for cracks and repair work, the bolts 15 are removed and the lids 12a, 12b are opened. , You can lean inside from there.

As described above, the front structure 1 of this embodiment serves as a storage space for small items 9 and an installation space for the horn 7, and also checks the presence of cracks in the partition walls 13a and 13b for reinforcing the boom 10. It has a structure that is convenient for repair work.

In this embodiment, the boom 10 of the hydraulic excavator is used.
However, it goes without saying that such a structure can also be applied to the case-shaped arm 11 and the front structure of another construction machine.

[0027]

As described above, according to the structure of the front structure of the present invention, it is possible to secure a sufficient space for accommodating small articles and the installation space for the horn, which cannot be easily secured by the construction machine. In addition, it is possible to obtain an extremely remarkable effect that it is possible to perform inspection and repair work for cracks in the partition wall for boom reinforcement and repair work easily. Furthermore, since the internal space of the housing-shaped member, which has not been used conventionally, can be used, various other applications can be considered, and there is an advantage that it can be used as a versatile front structure.

Further, in forming the structure according to the present invention, it is sufficient to cut out a predetermined surface of the housing-shaped member and attach the lid which can be opened and closed, so that the cost and labor required for the formation are extremely small. In addition, it is possible to obtain an effect that it can be easily applied to a conventional construction machine.

[Brief description of drawings]

1 is a side view of a hydraulic excavator around a boom according to an embodiment of the present invention.

FIG. 2 is a view on arrow AA in FIG.

FIG. 3 is a view taken along the line BB in FIG.

FIG. 4 is a rear perspective view showing the outline of the entire hydraulic excavator.

5A and 5B are views for explaining the storage section in FIG. 4, in which FIG. 5A is a plan view, FIG. 5B is a view taken along the line AA of FIG. 5A, and FIG. It is a perspective view.

FIG. 6 is a front view of an upper revolving structure showing a mounting position of a horn in a conventional hydraulic excavator.

[Explanation of symbols]

 1 Front structure 2 Upper revolving structure 3 Lower traveling structure 4 Bucket 5 Cab 6 Storage part 7 Horn 10 Boom 11 Arm 13 Bulkhead 14 Notch

Claims (2)

[Claims] 1. A multipurpose front structure structure comprising a front structure, a housing-shaped member having a part of a predetermined surface cut out, and an openable / closable lid attached thereto. 2. The multipurpose front structure structure according to claim 1, wherein a notch portion to which the lid is attached is
The multi-purpose front structure structure according to claim 1, wherein it is provided in the vicinity of a partition wall in the housing-shaped member.