JP3359473B2 - Transport vehicle and its cover structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled transport vehicle applied to transport large-sized articles, particularly in a premises of a factory or the like, and particularly to a transport vehicle suitable for transport in rainy weather. And its cover structure.

[0002]

2. Description of the Related Art In general, a carrier pallet system is used as a transportation system for improving the efficiency of transportation within a premises such as a factory. In this system, the number of pallets owned by a large-scale steel mill is several hundreds, and enormous investment is required to convert this large amount of pallets into hooded pallets that can be used even in rainy weather.

[0003] In addition, the cost can be reduced if a part of the number of pallets is covered with hoods. However, there is a problem that other products are loaded when used for transportation in rainy weather and cannot be used unless the products are reloaded. appear. Conventionally, in order to solve this problem, a method of protecting a product from being wet by placing a cover on a pallet when transporting the product in rainy weather has been adopted.

As a method of connecting the covers, Japanese Patent Publication No. 2-4
No. 0527 and Japanese Patent Publication No. 2-40528 have already been disclosed. The former (Japanese Patent Publication No. 2-40527)
The above-mentioned vehicle has a structure in which the front and rear ends of a cover of a cargo cover lid movably loaded on the pallet are connected to the carrier body which can enter the space below the pallet so that the front and rear ends thereof can be disengaged. And cover operation.

[0005] In Fig. 8, when carrying the goods B on the pallet frame main body 2, first, the hydraulic cylinder accommodated in the outer cylinder 12A is extended to move the cover 10 upward and to hold it at the upper moving end. Next, when the carrier body 1 is run and the vicinity of the tip of the cover 10 is placed on the pallet frame body 2, the hydraulic cylinder on the front side in the traveling direction is reduced and moved,
The connection between the inner cylinder 12B and the cover bracket 16 is released.

Subsequently, after the carrier main body 1 is advanced to the entry end in the pallet frame main body 2, a jack-up mechanism attached to each traveling wheel 3 is operated to move the floor surface of the carrier main body 1 upward, and the pallet frame is moved. The main body 2 is lifted and mounted on the main body 1. After that, the carrier body 1 is caused to travel to carry. On the other hand, the latter (Tokuhei 2-4052)
No. 8) allows the cover and the carrier to be detachable via a pair of front and rear connecting rods of the vehicle.

[0007]

The above two types of vehicles are:
In any case, when changing from a carrier to a pallet or from a pallet to a carrier, highly accurate positioning of the cover is required, which requires skill and time for the operation of the carrier, resulting in poor workability. In addition, it is necessary to equip all the carriers owned with an elevating device and a linking device for raising and lowering and linking the cover, and it is necessary to install a cover moving rail on all the pallets held, thereby increasing costs. . SUMMARY OF THE INVENTION An object of the present invention is to provide a transport vehicle which is inexpensive and excellent in operability by solving the above-mentioned problems, and a cover structure thereof.

[0008]

The gist of the present invention is as follows. (1) The pallet for transporting the goods (B) on the pallet (D) having a substantially portal shape (an inverted U-shape, hereinafter referred to as a portal shape ) together with the pallet (D).
(D) On the carrier body (1) formed so as to be able to penetrate into the pallet (D) , the carrier body (1) is moved downward onto the pallet (D) to cover the conveyed goods (B ). And lower ends and / or legs (6) on both sides of the cover (C ).
A plurality of pivotable arms (7) ,
By rotating the arm (7), the carrier (A)
Performs centering in the width direction with the cover (C), and
A protrusion (16) is provided at the tip of the arm (7), and the carrier (16) is provided.
At a position corresponding to the projection (16) on the frame (1d).
A recess (17) is provided to raise the carrier frame (1d).
With the projection (16) and the recess (17)
Holds carrier (A) and cover (C) with a fixed gap
Transportation vehicles and, through a vertically movable joint between the arm (7), characterized by being detachably cooperate with carrier body (1). (2) The transport vehicle according to (1), wherein a drive device is provided on the carrier body (1) , and the device has a function of controlling the turning of the arm (7) and the elevation of the joint.

[0009] (3) the front shape of the substantially gate-shaped pallet (D) on the transported article to (B), to be transported with the pallet (D), penetration can be formed into the pallet (D) in On the carrier body (1)
(1) is transferred onto the pallet (D) and the goods (B) are transferred.
A lower opening of the cover for covering the (C) transport vehicle cover provided with (C), both side lower portions and / or the legs (6) pivotally to a plurality of arms of the cover (C) (7 ) , And by rotating the plurality of arms (7)
Centering in the width direction between the carrier (A) and the cover (C)
And a projection (16) on the tip of the arm (7).
And the projection (16) of the carrier frame (1d) is provided.
A recess (17) is provided at a position corresponding to
Protrusion (16) and recess (17) with the rise of the room (1d)
And the carrier (A) and cover (C)
It is held at a certain gap, and can be moved up and down freely with the arm (7).
Via the engaging portion, detachably cooperate with the carrier body (1)
A cover structure for a transport vehicle.

[0010]

The present invention will be described below. For example, in the case of rainy weather, when transporting goods on a pallet whose front shape is almost gate-shaped inside the warehouse to the outside together with the pallet, the carrier is allowed to run in the cover opened downward and the center of the carrier and the cover in the carrier traveling direction. Stop at a position where the positions almost match. At this time, it is preferable to provide wheels that can be easily moved in the width direction below the legs of the cover in order to prevent displacement of the carrier and the cover (particularly, displacement in the longitudinal direction).

By pivoting a pivotable arm provided at the lower end and / or the leg of the cover, the cover moves in the width direction, and when the arm pivots at an appropriate angle (for example, 90 °), the carrier and the cover are automatically rotated. Are aligned in the longitudinal direction.

Next, when the lifting mechanism (eg, jack-up mechanism) attached to the carrier is operated to lift up the frame of the carrier body, the joint between the arm and the carrier body is lifted to lift the cover, and the cover is lifted by the carrier. Ready to transport. The joint may be formed by, for example, fitting a convex portion at the tip of the arm with a concave portion of the carrier body.

[0013] The carrier continues to run, stops immediately in front of the pallet on which the load is mounted, jacks down the carrier frame, then turns the arm in the opposite direction to disengage the connection between the carrier and the cover. Next, the carrier dives under the pallet in front of it, lifts up the carrier frame, loads the pallet, retreats into the cover, and jacks down the carrier frame.

Next, as described above, the arm of the cover is turned by an appropriate angle, and the carrier and the cover are simultaneously centered, and then the carrier frame is jacked up.
Since the pallet having the goods loaded on the carrier and the cover covering the entirety are loaded, the goods can be transported without getting wet even in rainy weather, for example.

[0015]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 3, in a self-propelled carrier A installed for transporting large-sized articles such as steel pipes, the front is mounted on a pallet D having a portal-shaped pallet frame 2b. The carrier body 1 having a horizontal floor surface 1a is provided with an appropriate number of traveling wheels 1c, and the height and width of the carrier body 1 are formed in a horizontally long shape for carrying the transported goods B loaded and transported together with the pallet D. D is set so as to be able to enter into D, and a driver's cab 1b for forward traveling and reverse traveling is provided at both ends.

When carrying the goods B, the floor 1a of the carrier body 1 is displaced upward, the goods B are loaded on the carrier body 1 together with the pallet D, and before and after carrying the goods B, A jack-up mechanism (not shown) is provided on each of the traveling wheels 1c to displace the floor surface 1a downward to release the goods B together with the pallet D from above the carrier body 1. Floor 1a
Can be moved up and down.

In order to protect the transported goods B from the rain and protect the entire pallet D from the pallet D, a cover C, which has a substantially gate-shaped front section and is formed so as to be free standing on the ground, is composed of a pallet and a pallet. Shutter 4 for opening and closing the opening before and after that size to ensure an appropriate gap between
Are installed so as to be wound and stretchable, respectively. Although not shown in the figure, the side and upper surfaces of the cover C are covered with a sheet made of canvas or an iron plate to protect the goods B on the pallet D from rain.

Next, a description will be given of a plurality of connecting mechanisms E provided on both side surfaces of the cover C in order to releasably connect the carrier main body 1 and the cover C with reference to FIGS. A bearing 12 fixed to a cross beam 10 (FIG. 5) for connecting a plurality of legs 6 provided on both side surfaces of the cover C,
A pivot arm 7 is provided on a pivotably provided shaft 11, and a cross beam 1 is provided.
The pivot driving device 8 is provided on a bracket 13 fixed to the pivot driving device 8 and connected to the shaft 11 by a shaft coupling 14.
To rotate the arm 7 by 90 °.

FIGS. 4 and 6 show a state in which the arm 7 has turned 90 ° from the standby position toward the carrier frame 1d. Here, a rotatable roller 15 is provided on a shaft 18 attached to the arm 7, and when the roller 15 comes into contact with a guide member 1 e provided on the end surface of the carrier frame 1 d during the turning of the arm 7, it is extremely compared with the carrier A. When the lightweight cover C is displaced, the arm 7 pivots up to 90 °.

FIG. 7 is a plan view showing the relative positional relationship between the carrier frame 1d and the cover C when the carrier A enters the cover C and stops at a predetermined position in the traveling direction. 7, even if the longitudinal axis of the carrier frame 1d is deviated from the longitudinal axis (X-axis) of the cover C by a small angle θ when the carrier A is stopped, as shown in FIG. When the arms 7b and 7e provided on the legs 6 on both sides of the cover C are turned by approximately 90 degrees, the distance between the outer surfaces of the two rollers 15 is configured to match the outer surface width of the carrier frame 1d. Therefore, when all the arms 7a to 7f complete the turning of about 90 °, the carrier A and the cover C are automatically centered in the width direction.

In order to make the centering easier, wheels 9 (FIG. 4) are provided below each leg 6 of the cover C,
It is desirable to reduce the movement resistance in the width direction (Y-axis direction in FIG. 7). Further, in order to prevent the rain cover from moving due to an external force such as a strong wind acting at the time other than the centering operation, it is desirable to provide a brake device not shown in the drawing below the legs of the cover.

As shown in FIG. 4, the swivel arm 7 of the cover C is provided in such a positional relationship that the swivel operation can be performed without interfering with the legs 2a of the pallet D. A protrusion (convex portion) 16 is provided at the tip of the revolving arm 7, and the concave portion 1 is provided at a position corresponding to the convex portion 16 of the carrier frame 1d.
After the centering of the cover C and the carrier A in the width direction is completed, the carrier frame 1d is raised by the jack-up mechanism of the carrier A.
The rain cover C is also lifted while the recess 17 matches.

As the ascent continues, the gap H between the carrier frame 1d and the pallet frame 2b disappears in FIG.
Finally, the pallet D has the carrier frame 1d and the cover C
Then, the pallet D loaded with the goods B and the cover C can be carried by the carrier A.

The width dimension of the cover C is preferably as small as possible in order to reduce obstacles during transportation. For this reason, the clearance between the pallet D and the cover C is set to about 100 mm on one side, and the width of the leg 6 of the cover C is set to the minimum necessary. In this embodiment, the width is set to 150 mm to 200 mm.
Also, the mechanism and the dimensions can be stored within the width of the leg 6.

The turning drive unit 8 and the shutter 4 of the cover C can be operated manually, but it is preferable to use a remote control since the cover is used mainly in rainy weather. As these power sources, a diesel generator 20 and a hydraulic device 19 (FIG. 1) were mounted on the upper part of the cover C. 1 and 2, reference numeral 21 denotes a valve stand, 22 denotes a shutter drive motor, 24 denotes a ladder for maintenance, 23 denotes a door of a power source installation portion, and 25 denotes a load pallet provided on a pallet for preventing collapse of a load. Indicates a stanchion.

Next, the operation and effect of the embodiment having the above configuration will be described. When transporting the goods B on the pallet D in the warehouse 5 by the carrier A in rainy weather, the carrier A is first placed at a predetermined position, and enters the cover C in which the shutter 4 at the end is opened. Stop after centering.

Next, when the turning arm 7 is turned by 90 ° by the linking mechanism E provided on the leg 6 of the cover C, the rain cover C
And the width direction of the carrier A is automatically centered.
Subsequently, the jack-up mechanism of carrier A is operated,
When the carrier frame is raised, the carrier frame 1
And the cover are connected via the arm 7 so as to be able to travel as a unit. In this state, the cover C is positioned directly in front of the pallet D on which the goods B are loaded.

Next, after the carrier frame 1d and the cover C are lowered by the jack-up mechanism of the carrier A, the linking mechanism E is operated to return the turning arm 7 to 90 °, so that the link between the carrier frame and the cover is released. , The cover is free standing on the ground. Subsequently, the carrier A is driven to enter the lower part of the pallet D in front of the vehicle, and the pallet is retracted while the pallet is lifted by the jack-up mechanism.
Stop at the center of the inside.

Next, the shutters 4 at both ends of the cover are closed to protect the load B from rain. Next, after lowering the carrier frame and the pallet by the jack-up mechanism of the carrier A, the linking mechanism E of the cover C is operated to center the cover and the carrier.
When the carrier frame is lifted by the jack-up mechanism, the cover C and the pallet D are loaded on the carrier A and can be transported without getting wet in the rain.

In this way, the operation of covering the transported object B with the cover C, the operation of retreating the cover C from the pallet D, and the like are properly performed, and the operation of transporting the transported object B in rainy weather is safe and quick. And can improve work efficiency and workability.

Further, since the cover C is installed on the carrier A so as to cover the pallet D and to be removable from the pallet D, the same number of covers as the number of pallets is provided when each pallet is provided with a cover. Is required,
In addition, it is possible to eliminate the problem that the work of loading / unloading the goods on the pallet is hindered by the cover, and to significantly reduce the number of covers to be installed. There is an effect that the work of loading and unloading can be simplified.

In particular, the equipment for setting or removing the cover on the pallet or the carrier is installed on the cover, and it is not necessary to add a new function to the carrier, so that the cost is greatly reduced as compared with the prior art. Can be saved.

[0033]

According to the present invention, it is possible to carry out the work of loading a conveyed object on the carrier body and the operation of covering the conveyed object with a proper cover, thereby saving labor and safety of the conveyed work.
This has the effect of reducing the number of covers to be installed and reducing costs without modifying the carrier.

[Brief description of the drawings]

FIG. 1 is a plan view of a cover according to the present invention.

FIG. 2 is a front view of a cover.

FIG. 3 is a side view of a cover.

FIG. 4 is a side view of the connection mechanism of the present invention.

FIG. 5 is a front view of the linkage mechanism.

FIG. 6 is a plan view of the operation of the swing arm of the linkage mechanism.

FIG. 7 is a plan view of a cover.

FIG. 8 is a schematic front view of a conventional technique.

[Explanation of symbols]

1: Carrier body 1a: Floor surface 1b:
Operator's cab 1c: running wheels 1d: carrier frame 2: pallet frame body 2a: pallet legs 2b: pallet frame 3: wheels (FIG. 8)
4: Shutter 5: Warehouse 6: Leg (of cover C) 7, 7a-7f:
Revolving arm 8: Revolving drive device 9: Wheel 10: Transverse beam 11: Shaft 12: Bearing 13: Bracket 14: Shaft coupling 15: Roller 16: Protrusion (convex portion) 17: Recess 18: Shaft 19: Hydraulic device 20: Power generation Machine 21: Hydraulic valve stand 22: Shutter drive motor 23: Door of power source installation part 24: Ladder for maintenance 25: Stanchion A: Carrier B: Carrying object C: Cover D: Pallet E: Linking mechanism

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuhiro Mase 5-3 Tokaicho, Tokai City Nippon Steel Logistics Co., Ltd. Tokai Branch (72) Inventor Katsuo Sakamoto 5-3 Tokaicho Tokai City Nippon Steel Logistics Co., Ltd. Tokai In branch (56) References JP-A-58-152621 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60P 7/02 B60P 1/02 B60P 1/64

Claims (3)

(57) [Claims] 1. A pallet having a substantially gate-shaped front face.
In order to transport the goods (B) on (D) together with the pallet (D) , the carrier body (1) is placed on the carrier body (1) formed so as to be able to enter the pallet (D ).
More but freely pivoted cargoes shifts on the pallet (D) (B) below the opening of the cover for covering the the (C) provided, on both sides the lower end and / or the legs of the cover (C) (6) It has a number of a <br/> over arm (7), pivots the plurality several arms (7)
The width of the carrier (A) and cover (C)
Centering and projecting from the tip of the arm (7).
A starting material (16) is provided, and the protrusion of the carrier frame (1d) is provided.
A recess (17) is provided at a position corresponding to the origin (16), and
With the rise of the carrier frame (1d),
By matching the recess (17), the carrier (A) and
A transport vehicle characterized in that a bar (C) is held at a fixed gap, and the bar (C) is detachably linked to the carrier body (1) via a vertically movable joint with the arm (7) . 2. A driving device is provided on the carrier body (1) ,
Transportation vehicle according to claim 1, characterized in that it comprises a lifting control function of turning and joints of the arm (7) to the device. 3. A pallet having a substantially gate-shaped front face.
In order to transport the goods (B) on (D) together with the pallet (D) , the carrier body (1) is placed on the carrier body (1) formed so as to be able to enter the pallet (D ).
Is provided on the pallet (D) , and is provided with a cover (C) which is open downward and covers the object (B).
(C) , having a plurality of pivotable arms (7) at both lower ends and / or legs (6) of the cover (C) ;
Carrying by rotating the arms (7)
Centering in the width direction between the gear (A) and the cover (C).
And a projection (16) is provided at the tip of the arm (7).
To the projection (16) of the carrier frame (1d).
A recess (17) is provided at a corresponding position, and the carrier frame
With the rise of (1d), the protrusion (16) and the recess (17)
By matching, the carrier (A) and cover (C)
It is held at a fixed gap and can be moved up and down with the arm (7).
A cover structure for a transport vehicle, which is detachably linked to the carrier body (1) via a portion .