JPS5932683Y2 - Storage and support device for boom device in vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a storage and support device for a boom device in a vehicle.

In general, a concrete pump vehicle or the like is equipped with a boom device having a concrete transfer pipe installed along the vehicle frame, and the desired work is performed by operating the boom device.

By the way, in the concrete pump vehicle described above, since the boom device is mounted so as to be retractable above the concrete pump, there is a problem in that the height of the retracted boom from the ground is high and running stability is poor.

Therefore, it is a matter of great importance to lower the height of the retracted boom above the ground as much as possible, and it is required to reduce the weight of the boom device and its auxiliary devices as much as possible.

In view of the above-mentioned problems, the present invention particularly reduces the weight of the storage and support device of the boom device.Examples of the present invention will be described below with reference to the drawings.

Reference numeral 1 indicates a boom device mounted on the front part of the vehicle body frame 2, and this boom device 1 includes a base boom 5 that is pivoted to the upper end of a support column 3 and can be raised and lowered by a hydraulic cylinder 4, and a tip boom 5.
The front boom 7 is pivotally supported at the front end of the boom 7 and can be bent up and down by a hydraulic cylinder 6.

A pump device 8 and a hopper 9 are mounted on the rear part of the vehicle body frame 1, and a feed pipe 1 is connected to the discharge port of the pump device 8.
0 is connected to a concrete transfer pipe 11 supported along the boom device 1, thereby making it possible to feed the fresh concrete discharged from the pump device 8 to high and distant locations.

A boom support device 13 for supporting the boom device 1 is provided on the pump case 12 of the pump device 8.

This support device 13 will be explained below. A pair of left and right brackets 15, 15, on which one end of a hydraulic cylinder 6 for vertically bending the tip boom 7 is pivoted, is attached to the base boom 5 constituting the boom device 1. A seat plate 17 is fixed to the lower end of the pair of brackets, which protrude downward from the lower surface.

On the other hand, the pump case 12 is provided with the support frame 16,
This support frame 16 is formed with a roughly shaped cross section by vertical frames 19 and 19 that are erected opposite each other on both sides of a horizontal base frame 18, and the tip boom 7 is mounted in the center of the support frame 16. A recess 20 is formed in which it can be accommodated.

Support surfaces 21.21 corresponding to the seat plates 17 are formed on the upper surfaces of the pair of vertical frames 19.19, respectively, and cushioning materials 22.22 are provided on the support surfaces 21.21.

Further, between the pair of vertical frames 19 and 19, a support surface 23 corresponding to the lower surface of the tip boom 7 is formed on the upper surface of the base frame 18, and a cushioning material 24 is also provided on this support surface 23.

In addition, 25 is a support frame 16 for the base boom 5 and the tip boom 7.
The seat plate 17 and the tip boom 7 when supported respectively on the
It is a buffer material interposed in between.

Next, the operation of the embodiment of the present invention will be explained. In order to store the boom device 1 on the vehicle body frame 2 in order to complete the feeding work of fresh concrete and drive the vehicle, the hydraulic cylinder 6 is contracted. The tip boom 7 is bent downward to the lower surface of the base boom 5.

Next, when the hydraulic cylinder 4 is contracted and the base boom 5 is laid down, the seat plate 17 on the base boom 5 side is placed on the support surfaces 21 and 21 of the pair of vertical frames 19 and 19 of the support frame 16 with the cushioning material 22.2.
2, and the tip boom 7 enters the recess 20 of the support frame 16 and is supported on the support surface 23 of the base frame 18 via the cushioning material 24, and the central part of the base boom 5 is It is supported on the tip boom 7 via a cushioning material 25.

As described above, the bracket that pivotally supports one end of the hydraulic cylinder that bends the tip is provided to protrude downward from the bottom surface of the base boom, and a seat plate is provided at the bottom end of the bracket, and this seat plate is supported on the vehicle body frame. Since it is connected to the frame and the base boom is supported by the support frame, there is no need to provide a separate support bracket to support the base boom, so the weight of the boom side that makes up the boom support device can be further reduced. Stability during driving can be improved.

[Brief explanation of drawings]

Figure 1 is an overall side view of the vehicle equipped with the boom device, Figure 2
The figure is a partially enlarged side view showing the boom support device, and FIG. 3 is a sectional view taken along the line AA in FIG. 2. 1 is a boom device, 2 is a vehicle body frame, 5 is a base boom, 6 is a hydraulic cylinder, 7 is a tip boom, 14 is a shaft support, 15 is a bracket, 16 is a support frame, and 17 is a seat plate.

Claims (1)

[Scope of utility model registration request] At least a base boom pivotably supported on the vehicle body frame and a tip boom connected to the tip of the base boom so as to be bendable up and down, so that the tip boom can be bent and stored below the base boom. In the boom device, a seat plate is fixed to the lower end of a bracket that pivotally supports one end of a hydraulic cylinder that protrudes downward from the lower surface of the base boom and bends the tip boom vertically, and A storage and support device for a boom device in a vehicle, comprising a support frame joined to a plate and supporting at least a base boom.