JPH07309589A - Counterweight device for crane car - Google Patents

Abstract

PURPOSE:To miniaturize, simplify and lighten the counterweight device for preventing the rear part of the car body from being lifted up when a load is suspended. CONSTITUTION:Concerning a crane car equipped with outriggers 7a and 7b on the front and rear both end side surfaces of a car body 4, a counterweight 10 is installed by using a pin, on the outrigger 7b on the rear part since of the car body 4 on which no load is suspended. Accordingly, the counterweight can be suspended by using the outrigger, and the counterweight device can be miniaturized and simplified and the weight reducing effect can be exhibited.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steerable vehicle that travels on a track and lifts heavy objects.

[0002]

2. Description of the Related Art In a conventional counterweight device for a heavy-duty vehicle, when a load is suspended, the counterweight moves backward when the boom moves forward, and usually a mechanism is provided in the center of the body to maintain balance. (Japanese Patent Laid-Open No. 58-30878).

Further, in the truck crane, a weight attaching / detaching mechanism is provided at the rear part of the revolving structure, and when a load is suspended, the weight is suspended by using a hydraulic cylinder.

[0004]

In the past, another device was required to move or remove the counterweight. Therefore, the structure is large and complicated.

An object of the present invention is to downsize the counterweight device, simplify the device, and reduce the weight.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a bogie, a vehicle body mounted on the bogie, and the vehicle body installed on the vehicle body and selectively projecting from an end portion in the traveling direction of the vehicle body. This can be achieved by comprising a boom, outriggers arranged on both sides in the width direction at both ends in the traveling direction of the vehicle body, a counterweight, and a coupling means for coupling the outrigger and the counterweight.

[0007]

Before operation of the cargo handling work by the operating vehicle, the counterweights are placed at predetermined positions on both sides of the rail by using a crane truck in the vicinity of the cargo handling work position. The steered vehicle is moved to the position of the counterweight, the outrigger on the rear side (the side where the boom is not projected) is projected, and the counterweight and the outrigger are coupled by the coupling means. Then raise the outrigger and suspend the counterweight.

[0008]

EXAMPLE An example of the present invention will be described with reference to FIGS.
In FIG. 1, a steerable vehicle includes a bogie 3 and 3 traveling on rails 1 by wheels 2, a car body 4 mounted on the bogie 3, swivel bases 5a and 5b installed at both longitudinal ends of the car body 4, It comprises booms 6 which are mounted on the bases 5a and 5b so as to be able to extend and contract in the horizontal direction, outriggers 7a and 7b which are installed on both sides in the width direction at both longitudinal ends of the vehicle body 4, and a counterweight 10. The boom 6 is provided with a hoisting device, and raises and lowers a hanging tool at the tip of the boom 6.

A rack (not shown) is provided along the longitudinal direction of the boom 6, and gears (not shown) meshing with the rack are installed on the swivel bases 5a and 5b. The boom 6 expands and contracts by rotating the gear with a motor.

In FIG. 1, the boom 5 is a swivel base 5 on the left side.
Although it is in a, to set it on the right swivel base 5b, the boom 6 is retracted, the swivel base 5a is horizontally swiveled, and the tip of the boom 6 is directed to the boom insertion hole of the right swivel base 5b. . The lifting device for the boom 6 is raised. Then, the boom 6 is projected and inserted into the insertion hole of the swivel base 5b. Further, the motor of the swivel base 5b is driven to drive the boom 6
Is moved to the swivel base 5b. As a result, the boom 6 is moved to the vehicle body 4
It can be made to selectively project at both ends in the longitudinal direction of the. Lifting of the load is mainly performed in a state where it is projected to one side in the longitudinal direction of the vehicle body. The insertion hole may be open at the upper side as long as the boom 6 can be pointed up, down, left and right.

1 and 2, the outrigger 7a on the side (left side) from which the boom 6 is projected is projected in the width direction and is projected downward to support the vehicle body 4, as is well known. The counterweight 10 is suspended by the outriggers 7b on the side opposite to the boom 6 (rear side, right side). The counterweight 10 is removable from the outriggers 7a and 7b.

3 to 5, the outriggers 7a,
7b, the counterweight 10, and the coupling means 20 are demonstrated. The outrigger 7b will be described.

Through holes are provided at two locations on the lower side surface of the outrigger 7b and at two locations on the upper side surface of the counterweight 10. The coupling means 20 includes four pins 21a and 21b that can penetrate the through holes, coupling fittings 22 and 22 that couple the pins 21a and 21b, and pins 21a and 21b.
And retaining means (not shown). As is well known, the outriggers 7a and 7b have a protruding means (not shown) in the width direction, a vertical stacking means (not shown), and a rotating means 9.

In this structure, the preparatory work for the cargo handling work will be described. Before starting the cargo handling work with the
Counterweights 10 are placed at predetermined positions on both sides of the rail 1 using a mobile crane (not shown) near the cargo handling work position. The hauling vehicle is moved to the position of the counter weight 10, the rear side (the side where the boom is not projected) of the outrigger 7b is projected in the width direction, the pin 21a is attached to the through hole of the outrigger 7b, and the connecting metal fitting 22 is attached. . Next, the counterweight 10 and the connecting fitting 22 are joined by the pin 21b. next,
The outrigger 7b is raised and rotated by the rotating means 9 to the rear. Since the suspending work of the counterweight 10 is completed as described above, next, the vehicle is moved to the loading position, the front outrigger 7a is projected in the width direction, and the outrigger 7a is projected downward, so that the vehicle body 4 is To raise.

According to this, since the counterweight is hung from the outrigger located on the side opposite to the boom side, the projecting means and the up-and-down means of the outrigger can be used as the hanging means of the counterweight. The structure can be simplified and the weight can be reduced.

Although the boom 6 has a structure capable of operating at both ends of the vehicle body 4 in the above-described embodiment, the boom 6 can be applied to only one side. That is, the rear outriggers are practically used only for hanging the counterweight.

[0017]

According to the present invention, since the counterweight is hung from the outrigger located on the side opposite to the boom, the apparatus can be downsized, the structure can be simplified, and the weight can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle according to the present invention.

FIG. 2 is a side view of the operating state of the vehicle according to the present invention.

FIG. 3 is a plan view of a portion of the outrigger of the present invention.

FIG. 4 is a view from 4-4 in FIG.

5 is a view taken along line 5-5 of FIG.

FIG. 6 is a diagram showing a procedure for suspending a counterweight.

[Explanation of symbols]

3 ... Bogie, 4 ... Car body, 5a, 5b ... Revolving base, 6 ... Boom, 7a, 7b ... Outrigger, 10 ... Counterweight, 20 ... Coupling metal fitting, 21a, 21b ... Pin, 22 ...
Connecting fitting.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ichiro Nakajima 794 Azuma HigashiToyoi, Shimomatsu City, Yamaguchi Prefecture Inside the Kasado Plant, Hitachi, Ltd. Company Hitachi Ltd. Kasado Plant (72) Inventor Tsutomu Yoshimoto 2-2-6 Yoyogi, Shibuya-ku, Tokyo Inside Tohnichi Railway Company Tokyo Construction Office (72) Inventor Tetsuo Omori 1-chome Marunouchi, Chiyoda-ku, Tokyo No. 8 No. 2 Japan Railway Car Industry Association

Claims (2)

[Claims] 1. A bogie, a vehicle body mounted thereon, a boom installed on the vehicle body and selectively protruding from an end portion of the vehicle body in the traveling direction, and both ends of the vehicle body in the traveling direction. 2. A heavy duty vehicle, comprising: outriggers arranged on both sides in the width direction, a counterweight, and a coupling means for coupling the outrigger and the counterweight. 2. The hanging means according to claim 1,
A heavy duty vehicle characterized in that an outrigger and a counterweight are joined with a pin.