JPH09278395A - Cargo handling vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust a width between mutually opposing surfaces of a locking part by providing a locking part capable of being freely locked/released in the longitudinal direction on/from a locking object part, and constituting at least one locking part of a pair of left and right locking parts so that a position can be freely adjusted in the laterial direction. SOLUTION: When a slag pan 38 is raised and transported, a boom 11 is rotated backward by a cylinder device 14, and a locking part 21 is relatively separated in the lateral direction. A cargo handling vehicle 1 is advanced and retreated, and a locking part 21 is opposed to a suspending pin 39. Next, the locking part 21 is is relatively approached in the lateral direction, and is engaged with the suspending pin 39, and the boom 11 is rotated upward and is rotated forward by a cylinder device 14, and is also rotated downward after it is rotated forward, and a slag pan 38 is positioned on a load carrying platform 7. Unloading work of the slag pan 38 to the other place is performed by the inverse action of these. A suspending device is made to act on a lower suspending pin, and the slag pan 38 is reversed.

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 transporting a slag pot or inverting a slag pot, for example, in an ironworks.

[0002]

2. Description of the Related Art Conventionally, when carrying a slag pot, for example, the cargo handling vehicle shown in FIGS. 5 and 6 has been used. 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. The front portion of the trailer 5 is connected to the rear portion of the track head 2 via a vertical shaft 9 or the like.

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 respectively connected at their base ends to a support member 42 provided at the rear end of the loading platform 7 by a left-right axis 43. By doing so, it is configured to be rotatable in the vertical direction and the front-back direction. And between the free ends of both booms 41, a connecting member in the left-right direction
44 united.

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. The surface is integrally provided with a locking portion 41A that extends upward when it is rotated in the loading platform 7 (solid line in FIG. 5), and a locking surface 45 that is opened at the front is provided on the locking portion 41A. It is formed.
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 bracket 49 provided at the front end of the loading platform 7 via a pin 50. The piston rod 48 extending rearward is connected to the connecting portion 41B on the boom 41 side via a pin 51.

According to such a conventional structure, when the slag pot 38 installed on the floor of a steel mill is lifted and transported, first, as shown by the phantom line (c) in FIG. 5 and FIG. A pair of left and right hanging pins 39 provided on the pan 38
The first locking surfaces 45A of the booms 41 are engaged with each other. At this time, both booms 41 are rotated rearward around the left-right axis 43 by the extension of the cylinder device 46.

By contracting the cylinder device 46 in this state, the boom is rotated forward while being rotated first.
The slag pot 38 is lifted through the line 41 as shown by the phantom line (d) in FIG. 5, and the boom 41 is rotated forward and then downward, so that the slag pot 38 is moved to the position shown in FIG. It may be located on the carrier 7 as shown by the solid line of 6. At that time, as the boom 41 rotates, the suspension pin 39 that has been locked to the first locking surface 45A is moved to the second locking surface 45B via the guide surface 45C.

[0008]

According to the above-mentioned conventional structure, the slag pot 38 having the shape of which the upper portion is widened deforms the distance between the hanging pins 39 due to thermal deformation (thermal expansion). When is large, the distance between the hanging pins 39 is deformed by a maximum of 200 mm (100 mm on one side). On the other hand, since both booms 41 are integrally fixed and the width (left-right interval) between the facing surfaces of both locking portions 41A is constant, the slag pot 38
When the amount of deformation is large, the locking portion 41A becomes clogged below the hanging pins 39, and there is a problem that these hanging portions 39A are not caught by these hanging pins 39.

Further, the engagement of the locking portion 41A with the suspension pin 39 is performed in a state where the cargo handling vehicle 1 is moved backward with respect to the slag pan 38 and both booms 41 are aligned with the suspension pin 39. In this case, since the clearance is small due to the above-described thermal deformation, the driver (operator) needs a high driving skill, and sometimes the vehicle is turned back to move backward, which causes a problem of poor work efficiency.

Therefore, the first aspect of the present invention is to provide a cargo handling vehicle capable of adjusting the width between the facing surfaces of the engaging portion.

[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 pair of left and right booms provided on the cargo bed side so as to be rotatable back and forth, a boom rotation device provided between the boom and the cargo bed side, and both booms. And a locking portion that can be engaged with and disengaged from the locked portion in the front-rear direction, and at least one of the pair of left and right locking portions is positionally adjustable in the left-right direction. It is characterized by.

Therefore, according to the first aspect of the present invention, when a transported object having a locked portion and thermally deformed, such as a slag pot, is lifted and transported, first, the boom is rotated backward by the boom rotation device. At the same time, the locking portions are relatively separated in the left-right direction. Then, the cargo handling vehicle is moved backwards so that the locking portion faces the locked portion, but at that time, even if the distance between the locked portions is largely deformed due to thermal deformation of the transported object, the locking portions face each other. Since the width between the surfaces is adjusted to secure sufficient clearance, even if the driver (operator) who does not have very high driving skill moves backward, the locking part is hooked on the locked part. Can be done without

Next, the locking portions are made relatively close to each other in the left-right direction to engage the locking portions with the locked portions. In this state, the boom can be rotated upward and forward by the boom rotating device, further forwardly rotated, and then downwardly rotated, whereby the transported object can be positioned on the platform. Then, the cargo-carrying vehicle can travel to carry the desired material. It is to be noted that the work of unloading the transported object to another place can be performed by the reverse action. Further, by causing the locking portion to act on the locked portion provided at another location of the transported object, the transported object can be inverted when lifting.

[0014]

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 wheels, 4 is a driving section, 5 is a trailer, 6 is wheels,
7 is a luggage carrier, 8 is an outrigger, 9 is a longitudinal axis, 38 is a slag pot which is an example of a transported object, and 39 is a hanging pin which is an example of a locked portion.

The cargo handling device 10 provided on the cargo bed 7 is
It has a pair of booms 11 in the left-right direction (vehicle width direction), and these base-side booms 11 are support members provided at the rear end of the platform 7.
A base end of the shaft 12 is connected to the shaft 12 by a horizontal shaft 13, so that the base 12 can be rotated in the vertical direction and the front-back direction.

A pair of left and right cylinder devices (an example of a boom rotating device) 14 for rotating the boom 11 are provided. The main body 15 of these cylinder devices 14 is the loading platform 7
The piston rod 16 connected to the bracket 17 provided at the front end of the
It is connected to the side connecting portion 11A via a pin 19. The free ends of both booms 11 are integrated by a left and right connecting member 20.

The upper and lower surfaces of the booms 11 extend from the base end to the middle, that is, the upper surface when rotated in the loading platform 7 and the lower surface when rotated rearward with respect to the loading platform 7. A locking portion 21 that can be engaged with and disengaged from the suspension pin 39 in the front-rear direction is provided on the surface of which the position is adjustable in the left-right direction. That is, the two locking portions 21 are swingably connected to the respective booms 11 in the left-right direction via the pivotal support pins 22 that are in the vertical direction when the booms 11 are rotated rearward with respect to the platform 7. Has been done. Then, a pair of right and left swinging devices 23 for swinging the locking portion 21 are provided.

Each of the rocking devices 23 has a cylinder device 24, and a main body 25 of the cylinder device 24 is connected to the intermediate outer surface of the boom 11 via a pin 27. Then, a V-shaped link is attached to the outer surface of the boom 11 via a support shaft 28.
29 is attached, and the piston rod 26 of the cylinder device 24 is connected to one end of the link 29 via a pin 30. A rod 32 is connected to the other end of the link 29 via a pin 31, and a free end of the rod 32 is connected to an outer surface of the locking portion 21 via a pin 33.

The engaging portion 21 is formed with an engaging surface 34 which is opened rearward when the boom 11 is rotated rearward with respect to the luggage carrier 7 (see the solid line in FIG. 1). This locking surface 34 is
The lower first locking surface 34A and the upper second locking surface 34A
B and a guide surface 34C connecting between the two locking surfaces 34A and 34B are formed in a C shape.

The outer surfaces of both booms 11 have a heat-insulating cover 35 for protecting the cylinder device 24 and the link 29.
Is provided. Also, on the inner side surface of both booms 11, the locking part 21
A stopper 36 is provided for preventing the lateral shake of the cylinder, and a check valve (not shown) for the cylinder circuit is provided.

The operation of the above embodiment will be described below. For example, when lifting and transporting a slag pot 38 placed on the floor of an iron mill, as shown by the solid lines in FIG. 1 and FIG.
Then, the first locking surface 34A of the locking portion 21 is engaged.

That is, in order to perform the engagement, first, the boom 11 is
As the cylinder device 14 is extended, the cylinder device 14 is rotated rearward about the left-right axis 13, and further, the locking portion 21 is contracted by the cylinder device 24, and the link portion 29 and the rod 32 are interposed.
As shown in the phantom line, the pivot pin 22 is swung outward, and the level of the first engaging surface 34A of the pivot pin 22 is raised.
It is located slightly below 39.

In this state, the cargo handling vehicle 1 is moved backward to position the first locking surface 34A below the hanging pin 39. At that time, for example, the slag pot 38 thermally deforms (thermally expands) and the hanging pin 39
Even if the distance between the two is greatly deformed, since the locking portion 21 is swung outward, sufficient clearance is secured and it serves as a guide, the reverse drive is a driver who does not have very high driving skill. Even an (operator) can easily and quickly perform the operation without hooking the locking portion 21 on the hanging pin 39.

Then, by extending the cylinder device 24,
The locking portion 21 is swung inward around the pivot pin 22 via the link 29 and the rod 32, so that both locking portions 21 are on the outer surface of the slag pot 38 as shown by the solid line in FIG. The first locking surface 34A is located directly below the suspension pin 39. Before and after this, the outrigger 8 lands.

In this state, the cylinder device 14 is contracted,
By rotating the boom 11 upward about the left-right axis 13, the hanging pin 39 is first engaged with the first locking surface 34A. Further, by rotating the boom 11 upward and forward, the slag pot 38 can be lifted and moved as shown by the phantom line (a) in FIG. 1, and then rotated forward and then downward. As a result, the slag pot 38 can be positioned on the loading platform 7 as shown by the phantom line (b) in FIGS. 1 and 4. At that time,
As the boom 11 rotates, the suspension pin 39 that has been locked to the first locking surface 34A moves through the guide surface 34C to the second locking surface 34A.
Moved to B.

After positioning the slag pot 38 on the loading platform 7,
By floating the outrigger 8 as shown in FIG. 2, the slag ladle 38 can be transported as desired by the traveling of the cargo handling vehicle 1. Note that the slag pan 38 can be wholesaled to another place by the action opposite to that described above. Further, by operating the suspension device 37 on the lower suspension pins 39A provided on the slag pot 38, the slag pot 38 can be inverted.

In the above-described embodiment, the slag pot 30 having the hanging pin 31 is shown as the transported object having the locked portion, but it is deformed by thermal expansion and has the locked portion. It can handle various objects to be transported.

In the above-described embodiment, the cylinder device 14 is shown as the boom rotating device, but this may be another type such as a ball screw type. In the above-described embodiment, the form having the C-shaped engagement surface 34 as the engagement portion 21 is shown, but other forms such as a U-shaped engagement surface may be adopted.

In the above-described embodiment, the pair of left and right engaging portions 21 are pivotally moved around the pivot pin 22 by the cylinder device 24 so that the position can be adjusted in the left and right directions. May be of a type in which the position can be adjusted in the left-right direction by sliding. Further, only one side of the both locking portions 21 may be configured to be positionally adjustable in the left-right direction.

[0031]

According to claim 1 of the present invention described above, when the cargo handling vehicle is moved backward and the locking portion is engaged with the locked portion,
Even if the distance between the locked parts is greatly deformed due to the thermal deformation of the transported object, it is possible to secure sufficient clearance by adjusting the width between the facing surfaces of the locking parts. Even an unskilled driver (operator) can easily, accurately and quickly perform the operation efficiently without hooking the locking portion on the locked portion.

[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 partially cutaway 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 Trackhead 5 Trailer 7 Loading Platform 10 Cargo Handling Equipment 11 Boom 13 Horizontal Axis 14 Cylinder Device (Boom Rotating Device) 21 Locking Part 22 Pivoting Pin 23 Swinging Device 34 Locking Surface 35 Heat proof Cover 36 Stopper 38 Slag pan (transported object) 39 Hanging pin (locked part) 39A Lower hanging pin

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 includes a pair of left and right booms provided on the cargo bed side so as to be rotatable forward and backward, The boom rotating device is provided between the boom and the cargo bed side, and the engaging portion is provided on both booms and is engageable and disengageable with respect to the engaged portion in the front-rear direction. A cargo handling vehicle, wherein at least one of the locking portions is configured to be positionally adjustable in the left-right direction.