JPH09278394A - Cargo handling vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cargo handling vehicle that can lift a transported body vertically while the cargo handling vehicle is as it is stopped. SOLUTION: At the time of lifting to transport a transported body 30 regulated in longitudinal and lateral movement, a locking part 20A is engaged with a locked part 31, and an outrigger 8 is landed to rotate a base side boom 11 upward by a boom rotating device 14. A rotational locus of a lock point of the locking part 20A and locked part 31 is of circular arc shape and moved forward, but a tilt rotating device 24 is actuated to rotate a tip side boom 20. The lock point can thereby be moved backward to offset forward movement, and the lock point can ascend with a vertical locus. The transported body 30 can be lifted without being caught by a supporting device 36 while a cargo handling vehicle is as it is stopped and the outrigger 8 is as it is landed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cargo handling vehicle used, for example, to lift and transport a slag pan on a steel mill or a wagon.

[0002]

2. Description of the Related Art Conventionally, for example, when a slag pot carried by a freight car is lifted and transferred, a cargo handling vehicle shown in FIGS. That is, the cargo handling vehicle 1 is composed of a truck head 2 and a trailer 5, where the truck head 2 is composed of wheels 3 and a driving unit 4, and the trailer 5 has an outrigger 8 at the rear of a cargo bed 7 having wheels 6. Is provided. Then, at the rear of the track head 2, a trailer 5 is provided via a vertical shaft 9 or the like.
The front part of is connected.

The cargo handling device 40 provided on the cargo bed 7 is
It has a pair of booms 41 in the left-right direction (vehicle width direction), and these booms 41 are a pair of support members erected at the rear end of the platform 7.
With respect to 42, the base end thereof is separately connected by the left-right shaft 43, so that it is rotatable in the vertical direction and the front-back direction. The free ends of both booms 41 are integrated by a left and right connecting member 44.

Further, it is an up-and-down surface extending from the base end to the middle of both booms 41, that is, an upper surface when rotated in the cargo bed 7, and a lower surface when rotated backward with respect to the cargo bed 7. On the surface, when rotated in the loading platform 7 (solid line in FIG. 5)
An engaging portion 41A extending upward is integrally provided at the engaging portion 41A, and an engaging surface 45 that is opened at the front is formed in the engaging portion 41A. The locking surface 45 is formed in a C shape by a first locking surface 45A that is an upper level, a second locking surface 45B that is a lower level, and a guide surface 45C that connects both locking surfaces 45A and 45B. It

A pair of left and right cylinder devices 46 for rotating the boom 41 are provided.
The main body 47 is connected to a pair of brackets 49, which are erected on the front end of the loading platform 7, through pins 50. The piston rod 48, which extends rearward, also has a pair of links via a pin 51.
52 and 53 are connected, and one of the links 52 is connected to the support member 42 via a pin 54, and the other link 53 is connected to the boom 41 via a pin 55.

According to such a conventional structure, for example, when the slag pan 30 mounted on the wagon 35 is fitted into the pan receiver 36 provided on the wagon 35 and is carried,
First, as shown in phantom lines (g) in FIGS. 5 and 6, each pair of first locking surfaces 45A of both booms 41 is engaged with a pair of suspension pins 31 provided in the slag pot 30. At this time, both booms 41
By the extension of the cylinder device 46, the cylinder device 46 is pivoted rearward about the left-right direction axis 43.

By contracting the cylinder device 46 in this state, the freight car 35 is first passed through the boom 41 which is rotated upward.
The slag pot 30 mounted on the slag pot 30 is lifted as shown by the phantom line (f) in FIG. 5, and the boom 41 is rotated forward and then downward, whereby the slag pot 30 is moved downwards as shown in FIG. 5 and FIG. It may be located on the carrier 7 as shown in solid lines. At that time, boom 41
With the rotation of, the hanging pin 31 locked to the first locking surface 45A is moved to the second locking surface 45B via the guide surface 45C.

[0008]

However, according to the above-mentioned conventional configuration, the slag pot 30 mounted on the freight car 35 is the pot receiver.
It is fitted into 36 from above, and this pan receiver 36 prevents movement in the front and back and left and right. When lifting the slag pot 30 as described above, the rotation locus of the boom 41, that is, the rotation locus of the suspension pin 31 that is locked to the first locking surface 45A (re).
Is to be moved forward in an arc shape centered on the left-right axis 43. Therefore, when the slag pot 30 is lifted while the cargo handling vehicle 1 is stopped, the slag pot 30 is caught by the pot receiver 36. I can't do it.

Therefore, in order to lift vertically,
Although the cargo handling vehicle 1 is moved backward (backward) in response to lifting, since the amount of backward movement is delicate, work efficiency becomes poor. Moreover, the rearward movement of the cargo handling vehicle 1 is performed by floating the outriggers 8, and thus lifting is an unstable operation.

Therefore, an object of the present invention is to provide a cargo handling vehicle capable of vertically lifting an object to be transported while the cargo handling vehicle is stopped.

[0011]

In order to achieve the above-mentioned object, a cargo handling vehicle according to a first aspect of the present invention is a cargo handling vehicle for lifting and transporting an object having a locked portion. The cargo handling device provided on the cargo bed includes a base side boom provided on the cargo bed side so as to be rotatable back and forth, a boom rotation device provided between the base side boom and the cargo bed side, and the base side boom. A front boom part connected to the free end side of the boom so as to be relatively rotatable in the front-rear direction, and a tilt rotation device provided between the boom parts. On the other hand, it is characterized in that a locking portion that can be engaged and disengaged is provided.

Therefore, according to the first aspect of the invention, when the object to be conveyed whose front and rear or left and right movement is restricted by the supporting device is to be conveyed, first, the front side of the engaged portion of the object to be conveyed. With the boom engaging device engaged and then the outrigger landed, the boom rotating device rotates the base side boom upward.

At this time, the rotation locus of the locking point by the locking portion and the locked portion becomes an arc shape. At this time, the tilt rotation device is operated by a set amount to rotate the front boom. By doing so, the position of the locking point can be moved backward, and thus the forward movement due to the arc-shaped rotation locus can be offset, and the locking point can be raised along the vertical locus. Thus, the object to be transported can be easily, quickly and stably lifted without being caught by the supporting device or the like while the cargo handling vehicle is stopped and the outrigger is still on the ground.

Such a vertical ascent is carried out in such a size that it is not affected (restricted) by the supporting device, and both booms are turned forward by the boom turning device while the tilt turning device is locked. By subsequently rotating downward, the transported object can be positioned on the platform. After that, by floating the outrigger, the cargo-carrying vehicle can travel to carry the desired material. In addition, for the work such as wholesale work of the transported object to other places,
This can be performed by the reverse operation to the above.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.
The state adopted for carrying the slag pot will be described with reference to FIGS. In the following, the same components or substantially the same components as those of the above-described conventional configuration are denoted by the same reference numerals, and detailed description thereof will be omitted.

That is, 1 is a cargo handling vehicle, 2 is a truck head, 3 is a wheel, 4 is a driving section, 5 is a trailer, 6 is a wheel, 7 is a bed, 8 is an outrigger, 9 is a longitudinal axis, and 30 is a transported object. A slag pot which is an example of a thing, 31 is a hanging pin which is an example of a locked portion, 35 is a freight car, and 36 is a pot receiver.

The cargo handling device 10 provided on the cargo bed 7 is
Having a pair of base side booms 11 in the left-right direction (vehicle width direction),
These base-side booms 11 are vertically and longitudinally connected to a pair of support members 12 erected at the rear end of the loading platform 7 by connecting the base ends of the booms 11 to each other by a horizontal shaft 13. It is configured to be rotatable.

A pair of left and right cylinder devices (an example of a boom rotating device) 14 for rotating the base side boom 11 back and forth are provided. The body 15 of these cylinder devices 14
Is connected to a pair of brackets 17 which are erected on the front end of the loading platform 7 via pins 18, and a piston rod 16 extending rearward is connected to the free end of the base side boom 11 via pins 19. .

To the free end side of the base side boom 11, the base side of the front side boom 20 is connected via a pin 21, respectively.
Thus, the base side boom 11 and the front side boom 20 are connected so as to be relatively rotatable in the front-rear direction. The free ends of the booms 20 on both front end sides are integrated by a connecting member 22 in the left-right direction.

In addition, a vertical surface extending from the base end to the middle of the front and rear booms 20, that is, an upper surface when rotated in the loading platform 7 and a rearward direction with respect to the loading platform 7. The lower surface (see FIG. 1) is integrally provided with a locking portion 20A that extends downward when it is rotated rearward with respect to the loading platform 7. The locking portion 20A is opened rearward. Locking surface 23 is formed. The locking surface 23 includes a lower first locking surface 23A, an upper second locking surface 23B, and both locking surfaces 23A.
It is formed in a C shape by a guide surface 23C connecting A and 23B.

A pair of left and right cylinder devices (an example of a tilt rotation device) 24 for relatively rotating the base side boom 11 and the front side boom 20 are provided, and a main body 25 of these cylinder devices 24 has a base portion. It is connected to the base end side of the side boom 11 via a pin 27, and the piston rod 26 is connected to the front side boom.
It is connected to the middle of 20 through a pin 28.

The operation of the above embodiment will be described below. For example, a pan receiver 36 provided in a freight car 35 is fitted from above to prevent movement in the front-rear and left-right directions.
When lifting and transporting the slag pot 30 placed on the 35, first, as shown by the solid line in FIG. 1 and FIG.
The first locking surface 23A of the front boom 20 is engaged with the pair of suspension pins 31 provided on the.

At this time, the base side boom 11 is pivoted rearward about the left-right axis 13 by the extension of the cylinder device 14 and is positioned diagonally upward, and further the front side boom 11 is rotated.
The cylinder 20 is relatively rotated around the pin 21 by the extension of the cylinder device 24, and is linearly positioned behind the base side boom 11. The engagement is performed by moving the cargo-handling vehicle 1 rearward (reverse) while the front boom 20 is rotated a little further downward to position the first locking surface 23A below the hanging pin 31. Next, the outrigger 8 is landed and then the front boom 20 is rotated upward.

By contracting the cylinder device 14 in this state, the base side boom 11 is first rotated upward about the left-right direction shaft 13. And the front side boom 20 is the base side boom 11
If it is integral with, the rotation locus of the front side boom 20, that is, the rotation locus of the suspension point where the suspension pin 31 is locked to the first locking surface 23A is as shown in FIG. At this time, it becomes an arc shape centered on the left-right direction axis 13, but at this time, by extending the cylinder device 24 by a set amount, the position of the suspension point can be moved backward, so that the arc-shaped rotation locus (i.e. ), The position of this suspension point can be raised in the vertical locus shown in (b) of FIG. 1.

As a result, with the cargo handling vehicle 1 stopped and the outrigger 8 landed, the slag pot 30 on the freight car 35 is pulled to the pot receiver 36 as shown by the phantom line (c) in FIG. It can be lifted easily, quickly and stably without hanging.

Such a vertical rise is performed in such a size that the pan receiver 36 is not affected (withdrawn) by the pan receiver 36, and when the cylinder device 24 is locked, the cylinder device 14 is contracted so that both booms 11 and 20 are retracted. Is rotated forward and then downward, so that the slag pot 30 can be positioned on the loading platform 7 as shown by the phantom line (d) in FIG. 1 and the phantom line in FIG. At that time,
The position of the suspending pin 31 passes through an arc-shaped rotation locus (e), and as the booms 11 and 20 rotate, the suspending pin 31 locked to the first locking surface 23A moves to the guide surface 23C. It is moved to the second locking surface 23B through.

After positioning the slag pot 30 on the loading platform 7,
By floating the outrigger 8 as shown in FIG. 2, the slag pot 30 can be transported as desired by the traveling of the cargo handling vehicle 1. In addition, wholesale work of slag pot 30 to other places and freight car 35
The loading operation can be performed by the reverse action to the above.

In the above-described embodiment, the slag pot 30 having the hanging pins 31 is shown as the transported object having the locked portion, but this can handle various transported objects.

In the above-described embodiment, the cylinder devices 14 and 24 are shown as the boom rotating device and the tilt rotating device, but other types such as a ball screw type may be adopted.

In the above-described embodiment, the type having the C-shaped locking surface 23 as the locking portion 20A is shown, but other types such as a U-shaped locking surface may be adopted. .

[0031]

According to the first aspect of the present invention described above, when the base side boom is rotated upward by the boom rotating device, the rotation locus of the locking point by the locking portion and the locked portion is It moves in an arc shape and moves forward, but at this time, by operating the tilt rotation device at a set amount and rotating the front boom,
The position of the locking point can be moved backward to offset the forward movement, so that the locking point can be raised in a vertical locus. This will stop the cargo handling vehicle and leave the outrigger on the ground,
The transported object can be easily, quickly and stably lifted without being caught by the supporting device or the like.

[Brief description of drawings]

FIG. 1 is a side view of a cargo handling device portion of a cargo handling vehicle, showing an example of an embodiment of the present invention.

FIG. 2 is a side view of the cargo handling vehicle.

FIG. 3 is a plan view of the cargo handling vehicle.

FIG. 4 is a plan view of a cargo handling device portion of the cargo handling vehicle.

FIG. 5 is a side view of a cargo handling vehicle, showing a conventional example.

FIG. 6 is a plan view of the same cargo handling vehicle.

[Explanation of symbols]

 1 cargo handling vehicle 2 truck head 5 trailer 7 loading platform 8 outrigger 10 cargo handling device 11 base side boom 13 horizontal axis 14 cylinder device (boom pivoting device) 20 front side boom 20A locking part 23 locking surface 24 cylinder device (tilt Rotating device) 30 Slag pan (transported object) 31 Lifting pin (locked part) 35 Freight car 36 Pan receiver

Claims (1)

[Claims] 1. A cargo handling vehicle for lifting and transporting a transported object having a locked portion, wherein a cargo handling device provided on a cargo bed comprises a base side boom rotatably mounted on the cargo bed side, and a base side boom. A boom rotating device provided between the base side boom and the cargo bed side, a front side boom connected to the free end side of the base side boom so as to be relatively rotatable in the front-rear direction, and provided between both booms. And a tilt rotation device provided with the tilt rotation device, wherein the front boom is provided with a locking portion that is engageable with and disengageable from the locked portion.