JP2567185Y2 - Work vehicle with boom - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention has a long boom that can be freely extended and bent, and is used for feeding a fluid such as concrete or washing water to a required place in a space with a pressure feeding tube along the boom. Related to a working vehicle with a boom, such as a concrete pump truck and a washing working vehicle.

[0002]

2. Description of the Related Art Conventionally, a concrete pump truck, a washing work vehicle or the like with a boom-type work vehicle has been used to pump concrete at the time of construction of a building or wash water pressure at the time of washing a building wall surface during construction. Sending was taking place. However, as buildings become more and more high-rise due to the effective use of land, etc., the places where concrete etc. are pumped are gradually becoming higher,
A work vehicle with a boom equipped with a longer boom was needed.

[0003] However, since the vehicle is defined with an overhang rearward from the rear wheel axle, there is a problem that if the boom is easily extended, the specified value will be exceeded when the boom is stored. In addition, the conventional work vehicle with a boom is shown in FIG.
As shown in the plan view, the boom 14 is installed on the vehicle body center axis o on the loading platform 13. If the boom 14 is lengthened while keeping the overhang below a specified value, the number of refractions of the boom 14 increases, and As a result, the load applied to the work vehicle 11 becomes unbalanced, and there is a possibility that stability during running or the like may be lost.

[0004]

The problem to be solved by the present invention is that while providing a longer boom than before, the overhang behind the rear wheel axle when the boom is retracted can be kept below a specified value and the body of the vehicle can be maintained. An object of the present invention is to provide a work vehicle with a boom that does not lose stability.

[0005]

Means for Solving the Problems] Such problems gist of the present invention which solves the can, the turning self extensibility and refraction freely boom in the carrier
With the required Kyusuru pump feeding the fluid concrete and washing water or the like into the pumping tube having a discharge opening in the boom tip is attached to the standing, the boom with work vehicle concrete pump truck and cleaning work vehicle, etc., the Boom on bed
The center of the post, which can be mounted up and down, is installed at a platform position eccentric to the side of the vehicle body center axis by a predetermined distance , and the boom is bent.
Multiple arm parts connected in the direction of the central axis.
In the boom with a working vehicle, characterized in that clause.

[0006]

In the present invention, the center of the boom post is set at a position eccentric to the side from the center axis of the vehicle body by a predetermined distance, so that the entire surface of the carrier is utilized and the weight of the boom acting on the vehicle body is distributed in a well-balanced manner. The boom can be mounted. Therefore, when the boom is folded, the boom is folded with a length that makes the overhang to the rear of the vehicle body less than the specified value, thereby providing a longer boom than before and losing stability of the vehicle body. Not even.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described with reference to the following drawings. FIG. 1 is a plan view showing an embodiment, and FIG. 2 is a side view of the embodiment. In this embodiment, an example of a concrete pump truck 1 is shown. FIG. 3 is a plan view showing a conventional example.

In the drawing, reference numeral 2 denotes an operator's cab, 3 denotes a loading platform, 4 denotes a boom, and 5 denotes a post for supporting a root end of the boom 4 and is attached to the loading platform 3 so as to be pivotable. In this embodiment, the boom 4 is longer than the boom 14 of the conventional work vehicle 11 with a boom shown in FIG. 3, and the load distribution on the carrier 3 when the boom 4 is stored is not unbalanced. The post 5 supporting the root end of the boom 4 from the center axis o of the vehicle body to e.
It is provided at an eccentric position. Accordingly, the boom 4 having the total width L at the time of storage can be installed by effectively using the full width W of the loading platform 3,
The boom 4 longer than the conventional maximum width S of the boom 14 at the time of storage can be obtained. 6 is a concrete pump,
Reference numeral 7 denotes a pressure feeding tube, and reference numeral 8 denotes a distal end outlet of the pressure feeding tube 7.

The present invention can be widely applied not only to concrete pump vehicles but also to work vehicles having a boom such as a washing work vehicle.

[0010]

[Effects of the Invention] In the present invention, as described above, the boom can be installed by effectively utilizing the space on the carrier, so that the overhang to the rear of the vehicle does not exceed the specified value and the stability is lost. Thus, a working vehicle with a boom having a longer boom than before can be provided.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment.

FIG. 2 is a side view showing the embodiment.

FIG. 3 is a plan view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete pump truck 2 Operator's cab 3 Carrier 4 Boom 5 Post 6 Concrete pump 7 Pumping tube 8 Discharge port 11 Work vehicle with boom 12 Operator's cab 13 Carrier 14 Boom

Claims (1)

(57) [Scope of request for utility model registration] An extendable / bendable boom is pivoted on a carrier.
With the required Kyusuru pump feeding the fluid concrete and washing water or the like into the pumping tube having a discharge opening in the boom tip is attached to the standing, the boom with work vehicle concrete pump truck and cleaning work vehicle, etc., the Boom on bed
The center of the post, which can be mounted up and down, is installed at a platform position eccentric to the side of the vehicle body center axis by a predetermined distance , and the boom is bent.
Multiple arm parts connected in the direction of the central axis.
Ku boom with a working vehicle, characterized in that.