JPH0561193U - Work vehicle with boom - Google Patents

Abstract

(57) [Abstract] [Purpose] To maintain the overhang of the rear axle of the vehicle body when the boom is retracted to below the specified value and to lose the stability of the vehicle body, even though the boom is longer than before. Providing a work vehicle with a boom. [Composition] A pressure-feeding tube 7 having a boom 4 that can be freely extended and bent and a discharge port 8 at the end of the boom 4.
In a work vehicle with a boom such as a concrete pump truck 1 having a pump 6 for feeding concrete or the like, the boom 4 is installed at a position eccentric to a side of a center axis o of the vehicle body by a predetermined distance e. [Effect] By utilizing the vehicle body width W to the maximum extent, it is possible to provide a boom (width L when stored) longer than before.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention has a long boom that can be freely extended and bent, and a concrete pump car used for the work of sending a fluid such as concrete and cleaning water to a required place in the space by a pressure feeding tube along the boom. A work vehicle with a boom such as a cleaning work vehicle.

[0002]

[Prior Art]

 Conventionally, work vehicles with booms such as concrete pump trucks and washing work vehicles have been used to pump concrete during construction of buildings and the like, or to wash water during washing of building walls during construction. It was However, as the height of buildings increased due to effective use of land, the locations where concrete was pumped gradually became higher, and a work vehicle with a boom equipped with a longer boom was needed.

However, since the vehicle has an overhang to the rear of the rear wheel axle, there is a problem that if the boom is easily lengthened, the specified value will be exceeded when the boom is retracted. Moreover, in the conventional work vehicle with a boom, as shown in the plan view of FIG. 3, the boom 14 is installed on the center axis o of the vehicle body on the loading platform 13, and the boom 14 is maintained while maintaining the overhang below the specified value. If the length is increased, the number of times the boom 14 is bent increases, which causes an increase in the lateral width S of the entire boom 14 at the time of storage, so that the load applied to the work vehicle 11 becomes unbalanced, and there is a risk that stability will be lost during traveling.

[0004]

[Problems to be solved by the device]

 The object of the present invention is to provide a boom longer than the conventional one, but to maintain the overhang to the rear of the rear wheel axle of the vehicle when the boom is retracted below a specified value and without losing the stability of the vehicle. To provide a work vehicle with a boom.

[0005]

[Means for Solving the Problems]

 The gist of the present invention, which has solved such a problem, is a pump for supplying a required fluid such as concrete or washing water to a pressure-feeding tube having a boom that can be freely extended and bent and that has a discharge port at the end of the boom. In a work vehicle with a boom, such as a concrete pump vehicle and a cleaning work vehicle, the boom is equipped with the boom at a position eccentric to the side from the center axis of the vehicle body by a predetermined distance.

[0006]

[Action]

 In the present invention, by mounting the boom at a position eccentric to the lateral side from the center axis of the vehicle body, the boom can be mounted by utilizing the entire surface of the loading platform and balancing the weight of the boom acting on the vehicle body with good balance. It is possible. Therefore, by folding the boom with a length that keeps the overhang to the rear of the vehicle body below the specified value when the boom is retracted, a longer boom than in the past can be equipped, and the stability of the vehicle body is lost. There is nothing to do.

[0007]

【Example】

 Examples will be described with reference to the following drawings. 1 is a plan view showing an embodiment, and FIG. 2 is a side view showing the same. In this embodiment, an example of a concrete pump car 1 is shown. FIG. 3 is a plan view showing a conventional example.

In the figure, 2 is a driver's cab, 3 is a loading platform, 4 is a boom, and 5 is a post for supporting the root end of the boom 4, which is attached to the loading platform 3 so as to be rotatable. In this embodiment, a boom 4 longer than the boom 14 of the conventional boom-equipped work vehicle 11 shown in FIG. 3 is provided, and the load distribution on the platform 3 when the boom 4 is stored does not become unbalanced. Thus, the post 5 that supports the root end of the boom 4 is provided at a position eccentric from the center axis o of the vehicle body. Therefore, it is possible to effectively utilize the full width W of the cargo bed 3 to install the boom 4 having the total width L when stored, and the boom 4 can be made longer than the maximum width S of the conventional boom 14 when stored. 6 is a concrete pump, 7 is a pressure feeding tube, and 8 is a tip discharge port of the pressure feeding tube 7.

INDUSTRIAL APPLICABILITY The present invention can be widely applied not only to concrete pump cars but also to work vehicles including booms such as washing work vehicles.

[0010]

[Effect of the device]

 As described above, the present invention can effectively utilize the space on the loading platform for the boom device, so that it does not exceed the specified value of the overhang to the rear of the vehicle body and does not lose stability, In comparison, we were able to provide a work vehicle with a boom that had a longer boom.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment.

FIG. 2 is a side view showing an example.

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

[Explanation of symbols] 1 concrete pump truck 2 cab 3 cargo bed 4 boom 5 post 6 concrete pump 7 pump tube 8 discharge port 11 work vehicle with boom 12 cab 13 cargo bed 14 boom

Claims (1)

[Scope of utility model registration request] 1. A concrete pump car / washing work, comprising a boom capable of extending and bending, and a pump for feeding a required fluid such as concrete or washing water to a pressure feeding tube having a discharge port at the end of the boom. A boom-equipped work vehicle such as a car, wherein the boom is installed at a position eccentric to a side of a center axis of the vehicle body by a predetermined distance.