JPH072368A - Motor truck loader - Google Patents

Abstract

PURPOSE:To provide a motor truck loader capable of efficiently performing the loading work of cargoes without using a manual means or a pallet regardless of the type of the load carrying platform of a truck. CONSTITUTION:This motor truck loader is provided with a conveyor 2 expandable from the rear to the depth of a motor truck load carrying platform 50 and a loading device 3 fitted at the tip of the conveyor 2 and moved between the rear and the depth of the load carrying platform 50 in conjunction with the expanding/shrinking actions of the conveyor 2. The loading device 3 is provided with an aligning device 10 aligning the cargoes conveyed into the load carrying platform 50 by the conveyor 2 in sequence in the width direction of the load carrying platform 50 and a thrusting device 20 capable of thrusting multiple cargoes aligned by the aligning device 10 from behind and simultaneously loading them onto the load carrying platform 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a truck loader used for loading luggage on a bed such as a large truck.

[0002]

2. Description of the Related Art Conventionally, when a luggage is loaded on a large truck of a box-type rear door type in which the luggage carrier is covered with a panel or a hood and the luggage is taken in and out from the rear, for example, the following various methods are used. . First, for example, after raising a load to the height of the loading platform by using a lift device, an operator who has boarded the loading platform pushes the loads to the back of the loading platform and sequentially stacks them. Secondly, holding the luggage up and down,
Luggage was sequentially stacked from the back of the cargo bed using a truck loader that is a combination of a gate-type transfer device having a gripping device that can be moved in the left-right direction and the front-rear direction and a conveyor with a carriage that is used by being loaded on the cargo bed. Thirdly, for a so-called wing body type truck in which a panel for covering the cargo bed or the side of the hood is opened to the roof, the luggage is placed on a pallet, and the pallet is used to load the luggage. They were loading and unloading all at once on the horizontal line of the loading platform.

[0003]

However, according to the first method, there are drawbacks that the work in the truck is not efficient because it is performed manually, and the work load is too heavy. According to the second method, since the device becomes large in size, a considerable space is required. Therefore, conversely, in a distribution center or the like where it is necessary to secure a parking space for a truck or a space for storing luggage as much as possible. It was often an obstacle. Further, according to the third method, there is a problem that a wing body type truck cannot be used for loading and unloading, and the pallet must be collected from the delivery destination because the pallet is loaded together.

The present invention has been made in view of these conventional problems, and is compact and requires a small installation space, and is efficient in a short time for loading luggage onto a box-type rear door type loading platform without human labor. The purpose is to provide a truck loader that can be carried out well.

[0005]

For this reason, according to the present invention, a conveyor which can be expanded and contracted from the rear of the truck bed to the inner part and a tip of this conveyor are attached to the rear of the bed along with the expansion and contraction operation of the conveyor. And a loading device that moves between the inner part and the inner part, and the loading device is arranged by the aligning device that sequentially aligns the loads conveyed inside the loading platform by the conveyor in the width direction of the loading platform, and the aligning device. The present invention has created a truck loader characterized in that it has a pushing device capable of pushing a plurality of loads in a state from the rear and loading them onto a loading platform at once.

[0006]

According to the above construction, the telescopic conveyor and the loading device are operated so that the loading operation of the luggage can be performed from the state where the telescopic conveyor is extended and the loading device enters from the rear entrance of the loading platform of the truck to reach the back. Be started. An appropriate number of pieces of luggage sequentially conveyed into the cargo bed by the conveyor are aligned by the aligning device in the width direction of the cargo bed, and in this aligned state, the pushing device pushes the cargo from the rear side to load it on the cargo bed at once. The second, third, and so on luggages are pushed onto the loaded first-stage luggage in a state that they are aligned in the width direction and stacked one by one, and are stacked up to the uppermost stage where the space of the cargo bed allows. . As described above, the first row at the innermost portion of the loading platform is loaded, and the loading device is retracted by a predetermined distance and repeated, so that the luggage is loaded in a full space in the width direction, the height direction, and the depth direction of the loading platform.

[0007]

Embodiments of the present invention will now be described with reference to FIGS. As shown in FIG. 1, a truck loader 1 of the present example is equipped with a telescopic conveyor 2 that can extend from the rear of a truck carrier 50 to the inner part, and a tip end of the conveyor 2. It is provided with a loading device 3 which moves between a rear part and a rear part of the loading platform 50.

The conveyor 2 is a belt conveyor which can be expanded and contracted in four stages, and has a drive source for actively expanding and contracting. The conveyor 2 can be vertically swung about a fulcrum 2a on the lower side at the entrance side (right end side in the drawing) by a swing device 4 provided at the lower end of the tip end (right end in the drawing). The tip of the conveyor 2 can be adjusted to any height. In the swing device 4, the drive cylinder 4a is extended / contracted to rotate the arm 4b in the vertical direction about the fulcrum 4c, so that the swing device 4 is integrally connected to the arm 4b and the tip end thereof is applied to the lower surface of the conveyor 2. Arm 4d
Is configured to be swung in the up-down direction by rotating the up-down direction.

A dolly 6 on which the loading device 3 is placed is connected to the tip of the thus constructed conveyor 2 via a pin joint portion 5. The pin joint section 5 connects the carriage 6 to the tip of the conveyor 2 so as to be vertically displaceable with each other, and the upper and lower limits of the displacement are detected by a sensor (not shown) attached to the carriage 6 side. It has become so. Then, when the conveyor 2 expands and contracts, the swing device 4 is based on this sensor.
Is operated to gradually change the inclination angle of the conveyor 2 so that the pin joint portion 5 (the tip of the conveyor 2) is always positioned at a certain height.
As a result, the carriage 6 can be smoothly moved, and the conveyor 2 can be smoothly expanded and contracted.

The carriage 6 is provided with wheels 6a at its four corners, but is not provided with a drive source for self-propelling, and moves along with the expansion and contraction of the conveyor 2. That is, when the conveyor 2 is extended, the carriage 6 is pushed by the conveyor 2 and moves toward the inner part of the luggage carrier 50, while when the conveyor 2 is contracted, the carriage 6 is pulled by the conveyor 2 and is transported to the luggage carrier 50. Move to the rear luggage loading area.

Further, as shown in FIGS. 2 and 4, a long detection rod 41 for detecting the distance between the carriage 6 and, for example, the front wall of the luggage carrier 50 is attached to the lower surface of the carriage 6. Has been. The detection rod 41 is projected to the front of the truck by a rodless type cylinder 40 attached to the lower surface of the truck 6. The protruding size of the detection rod 41 is detected by an encoder (not shown), and is controlled by operating the cylinder 40 based on this. In a state where the detection rod 41 is projected to a predetermined size, for example, the loading platform 50
By moving the truck 6 forward until it hits the front wall of the truck, the truck 6 can be stopped at the loading start position.

As shown in the figure, when the conveyor 2 is in the most contracted state, the carriage 6 (and the loading device 3,
The same applies hereinafter) exits from the inside of the loading platform 50 and is positioned on the lift device 7. The lift device 7 is of a pantograph type using a hydraulic cylinder, and a slide table 7a that slides along the expansion and contraction direction of the conveyor 2 is provided on the upper surface of the table. This slide table 7
The dolly 6 is placed on a. When the lift device 7 is operated to adjust the slide table 7a to the height of the loading platform 50 and the hydraulic cylinder for sliding is activated, the slide table 7a is hung on the loading platform 50, whereby the carriage 6 is loaded. You will be able to transfer to within 50.

An open center type switching valve is used as a switching valve for operating the hydraulic cylinder of the lift device 7. Here, this slide table 7a
Is kept in a state of being suspended on the luggage carrier 50 (sliding to the luggage carrier 50 side) during the loading operation of the luggage W. On the other hand, for example, depending on the loading amount of the luggage W, the loading platform 50
Since the height of the slide table 7a changes, it is necessary to change the height of the slide table 7a according to the height of the bed 50. In this regard, by using an open center type switching valve for the lift cylinder, the slide table 7a is adapted to be displaced up and down in accordance with changes in the height of the loading platform 50.

At the rear portion of the slide table 7a, there is provided a stopper 8 which is applied to the rear side of the rear wheel 6a in order to regulate the backward movement of the carriage 6. When the slide table 7a is slid to the loading platform 50 side by the stopper 8, the cart 6 is carried into the loading platform 50 while being placed on the slide table 7a, and in this case, the conveyor 2 follows the movement of the cart 6. Be withdrawn. On the contrary, when the conveyor 2 is retracted, the carriage 6 is transferred from the loading platform 50 onto the slide table 7a, and the rear wheel 6a is stopped by the stopper 8.
When the conveyor 2 is further pulled in from the state of being in contact with, the slide table 7a together with the carriage 6 slides from the inside of the loading platform 50 to the outside. Here, an open center type valve is also used as a switching valve for operating the hydraulic cylinder for sliding, and the switching valve is switched to the center position when the slide table 7a moves to the outside of the bed 50. Therefore, the slide table 7
The a does not positively slide when leaving, but slides following the retracting operation of the conveyor 2.

The loading device 3 mounted on the carriage 6 is provided with an aligning device 10 for aligning an appropriate number of the loads W conveyed by the conveyor 2 in the width direction of the load carrier 50, and the aligning device 10 in this aligned state. The push-out device 14 for moving the load W onto the vertical slide table 26 and the pushing device 20 for pushing the load W on the vertical slide table 26 from the rear side to push the load W into the bed 50 are provided.

First, the aligning device 10 is assembled to the roller conveyor 30 placed on the first frame 11. The first frame 11 includes linear guides 12, 12
It is mounted on the carriage 6 in such a manner that it can move in the width direction of the cargo bed 50 via the carriage 6, and the centering device 13 allows the carriage 6
The position in the width direction is adjusted so that it is always located at the center of the bed 50 in the width direction regardless of the position.

The centering device 13 is arranged in the gap between the first frame 11 and the carriage 6 as shown in FIG. As shown in FIG. 3, the centering device 13 is provided with arms 13a and 13a which are projected to the left and right sides, and the both arms 13a and 13a are interlocked by a rack and pinion mechanism to move in the same direction. Stroke the same distance. Rollers 13b are rotatably attached to the ends of both arms 13a. Both rollers 13b have a rotating shaft in the up-down direction, and are rolled on the tilt of the bed 50 along the traveling direction of the carriage 6. Centering device 13 configured in this way
According to the above, both arms 13a, 13a are projected and the loading platform 50 is
However, since both arms 13a are interlocked with each other and protruded by the same distance, the first frame 11 is displaced laterally with respect to the carriage 6 as a result.
Located at the center of 0. The loading device 3 (the trolley 6) moves with both arms 13a abutting against the tilt.

Next, an auxiliary stand 31 is attached to the tip of the roller conveyor 30 attached to the upper surface of the first frame 11.
a and 31a are attached so as to project to the left and right,
The two auxiliary bases 31a, 31a and the tip of the roller conveyor 30 between them serve as an alignment base 31 for aligning an appropriate number of loads W in a row in the width direction of the load carrier 50. A pusher plate 37 is arranged on the alignment table 31,
As shown in FIGS. 5 and 6, the pusher plate 37 is translated in the left-right direction by a constant stroke by a rodless type cylinder 37a arranged under the roller conveyor 30. By appropriately moving the pusher plate 37 in the left-right direction, the loaded luggage W is sent.
Are sequentially moved in the left-right direction, so that the alignment table 31
Above, a plurality of loads W to W are arranged in a line in the width direction of the loading platform 50.

Further, as well shown in FIG. 6, centering plates 31b are arranged at the tips of both auxiliary bases 31a. Both centering plates 3
The cylinders 1b can be moved in parallel in the same direction substantially at the same time in the same direction by the cylinders 31c attached to the lower surface of the auxiliary table 31a, respectively. By these both Senling plates 31b, the plurality of loads W aligned on the alignment table 31 are centered without any gap therebetween.

A centering portion is provided in front of the aligning device 10 thus constructed in the carrying direction. The centering section includes centering plates 33, 33 provided on the left and right sides of the roller conveyor 30 in front of the alignment table 31. As shown in FIGS. 5 and 7, the centering plates 33 move in parallel in the directions toward and away from each other by the cylinders 33a and 33a that operate in conjunction with each other. By moving the centering plates 33, 33 in conjunction with each other left and right, the loads W sent to the front of the alignment table 31 are positioned one by one in the center of the loading device 3.

A stopper 3 is provided at the tip of the roller conveyor 30.
4 are provided. The stopper 34 is provided with a bar having a length substantially corresponding to the left-right width of the alignment table 31.
It is supported so as to be retractable in the vertical direction by 4a and is operated by a cylinder 34b. By projecting the stopper 34 above the transport surface of the roller conveyor 30, the load W on the alignment table 31 can be stopped on the spot, while the cylinder 34b is operated in the retracting direction to be supported. When the arm 34a is rotated downward, the stopper 34 is released, whereby the alignment table 31 is released.
The upper load W can be moved forward, that is, on the vertical slide table 26 described later. Further, as shown in FIGS. 5 and 9, a stopper plate 38 is also provided between the aligning device 10 and the centering portion so that the stopper plate 38 can be retracted and retracted by the cylinder 38a, thereby stopping the conveyance of the load W during the centering. As a result, a state of waiting for loading to the alignment table 31 is realized.

Next, a second frame 21 is attached to the upper surface of the first frame 11 in addition to the aligning device 10 and the like, and the pushing device 14 is attached to the second frame 21.
Is assembled. The push-out device 14 is provided to push out an appropriate number of loads W aligned on the alignment table 31 onto the front vertical slide table 26 at a time, and a rodless slide cylinder 17a. The horizontal slide mechanism 17 (see FIG. 8) including the pusher bar 15 and the like that are reciprocated between the rear and front of the luggage W on the alignment table 31 by the horizontal slide mechanism 17 are provided. The push-out bar 15 is an elongated bar having a length substantially equal to the left-right width of the alignment table 31, and is vertically moved by the support arms 16 and 16 which are rotatably supported by the horizontal slide mechanism 17 in the vertical direction. Supported as possible.
The rotation operation of the push-out bar 15 is obtained by operating the cylinder 18. The horizontal slide mechanism 17 is additionally equipped with another slide mechanism including a cylinder 19 so that the push-out bar 15 can be moved independently of the horizontal slide mechanism 17 with a constant stroke. Has become.

Next, the above-mentioned vertical slide table 26 is mounted on the tip of the first frame 11 via the vertical slide mechanism 22. The vertical slide mechanism 22 is configured to support the base 22a so as to be vertically movable independently in two stages via a drive motor, a chain transmission mechanism, and the like (not shown). The vertical slide table 26 is attached to the base 22a. ing. By thus configuring the vertical slide mechanism 22 in two stages, the vertical slide table 26 and the pushing device 20 described below can be moved up and down over a sufficiently wide range in the height direction of the load carrier 50. .

Next, the vertical slide table 26 has substantially the same horizontal width as the alignment table 31, and is supported by the base 22a in a state in which it can be tilted downward in a certain range from the horizontal state about the fulcrum 26a. ing. This tilting motion is obtained by operating the cylinder 23.

A stopper 25 is provided at the tip of the upper and lower slide table 26 so as to be vertically retracted by the cylinder 24. The stopper 25 is also constructed in substantially the same manner as the stopper 34, and is mainly constructed of a long bar having substantially the same length. The stopper 25 prevents the load W pushed from the alignment table 31 onto the vertical slide table 26 from falling forward. On the other hand, when the cylinder 24 is operated and the stopper 25 is released, the load W on the vertical slide table 26 can be moved forward.

The pushing device 20 described above is arranged on the upper base side of the vertical slide table 26. The pushing device 20 is also provided with a long pushing bar 27 and a pantograph mechanism 28 including a cylinder 29, and by operating the cylinder 29, the pushing bar 27 is moved in parallel in the depth direction of the loading platform 50. The load W pushed onto the slide table 26 is pushed further forward and loaded on the loading platform 50. The push-in bar 27 and the pantograph mechanism 28 are covered with covers 27a and 28a, respectively, so as not to hinder the movement of the luggage W.

Next, an actual loading operation by the truck loader 1 of the present embodiment configured as described above will be described step by step. First, the truck moves backward and is stopped at a predetermined position. Whether or not the truck is stopped within a certain range in the width direction with respect to the loading device 3 is confirmed by appropriate means. In other words, the truck is stopped within a range in which the centering device 13 equipped in the loading device 3 can sufficiently exert its function. After that, the lift device 7 is operated to raise the carriage 6 and the loading device 3. Here, the lift device 7 is the truck carrier 5
Regardless of the height of 0, it is once raised to its rising end.
Along with this, the swing device 4 is operated to raise the tip of the conveyor 2 following the rise of the lift device 7.

After the lift device 7 is raised to the rising end, the slide table 7a is slid forward. Then, the stopper 8 provided at the rear portion of the slide table 7a and applied to the rear side of the rear wheel 6a of the carriage 6 allows the carriage 6 to remain inside the luggage carrier 50 while being placed on the slide table 7a. Moving. Further, following this, the conveyor 2 is pulled out. At this time, the conveyor 2 is pulled out following the movement of the slide table 7a. Therefore, the brake of the expansion / contraction motor of the conveyor 2 is kept open.

After the slide table 7a is slid to the moving end, the lift device 7 is operated to the descending side, and the slide table 7a is placed on the bed 50. After that, the switching valve for operating the lifting cylinder of the lift device 7 is switched to the open position of the center so that the slide table 7a moves up and down following the vertical movement of the bed 50.

By the above operation, the trolley 6 can be moved forward. Next, the conveyor 2 is extended and the trolley 6 is moved.
(And the loading device 3, the same applies below) is moved toward the back of the loading platform 50. The dolly 6 is pushed by the conveyor 2 to move. When the carriage 6 advances by a predetermined distance, the extension of the conveyor 2 is stopped and the carriage 6 is stopped. Then, the centering device 13 is actuated at this place to project both arms 13a to the left and right, and the respective rollers 13b are abutted against the tilt of the bed 50. As a result, the loading device 3 on the carriage 6 is positioned at the center of the loading platform 50.

Along with this, the detection rod 41 for detecting the loading start position is projected forward by a predetermined size. This protruding dimension is set to a distance of L + α from the tip of the carriage 6. The distance L is the distance from the front wall of the luggage carrier 50 and the loading start position of the first row of the luggage W. Distance α
Is a distance at which the detection rod 41 hits the front wall and is pushed back, and the conveyor 2 moves while the carriage 6 moves forward by this distance α.
Is stopped, and the carriage 6 is accurately stopped at the loading start position. That is, the distance α is a distance set to absorb the time difference from the detection rod 41 hitting the front wall to the stop of the carriage 6. In this way, the centering device 13 and the detection rod 41 are activated, and then the conveyor 2 is extended again to move the carriage 6 and the loading device 3 forward toward the back of the loading platform 50. During this movement, the loading device 3 is always positioned at the center of the bed 50 by the centering device 13.

The cart 6 advances to the back of the loading platform 50,
When the detection rod 41 is abutted against the front wall of the loading platform 50, this is detected by the encoder, and based on this, the extension of the conveyor 2 is stopped, so that the carriage 6 and the loading device 3 are stopped at the loading start position. While the centering device 13 is still operating, the displacement of the loading device 3 in the width direction is always detected while the carriage 6 is moving forward, and when the displacement exceeds a certain distance, this is detected by the truck. The operation of the truck loader 1 is stopped because the stop position is abnormal. Then, in this case, the carriage 6 is returned to the slide table 7a, the slide table 7a is returned to the retracted position, the stop position of the truck is corrected, and the above operation is performed again.

Here, since the tip of the conveyor 2 is connected to the carriage 6 via the pin joint portion 5 so as to be movable in the vertical direction, when it is extended in an inclined state, the height of the tip of the conveyor 2 is accordingly increased. Changes. Therefore, in the process of expansion and contraction of the conveyor 2, the sensor detects that the height reaches the upper limit or the lower limit, and the swing device 4 is operated based on this. According to this operation, the height of the tip portion of the conveyor 2 can be constantly kept within a certain range regardless of the expansion / contraction operation. By repeatedly expanding and contracting the position, the carriage 6 can be moved smoothly, and the conveyor 2 itself can be expanded and contracted smoothly.

When the carriage 6 reaches the loading start position and the conveyor 2 is stopped, the swing device 4 is operated to adjust the inclination angle of the conveyor 2, whereby the transport surface of the conveyor 2 and the loading device 3 are adjusted. The conveyance surface of the roller conveyor 30 is made flush with each other.

As described above, the truck loader 1
Is installed on the loading platform 50 of the truck, and after that, the transportation motor of the conveyor 2 is activated to start loading the packages W. The parcel W conveyed on the conveyor 2 is further conveyed on the roller conveyor 30 and reaches the centering section in front of the alignment apparatus 10. In this centering section, the load W is repositioned in the center of the roller conveyor 30 by the centering plates 33, 33, and then,
It is loaded onto the alignment table 31.

Alignment of the luggage W is performed as follows. 10 to 18 show the operations of the aligning device 10 and the centering plate 33 in the case where four loads W are sequentially aligned in a row in the width direction of the loading platform 50. As shown in FIG. 10, four loads W1 to W4 are conveyed by the conveyor 2 and the roller conveyor 30 to the back of the loading platform 50, and the center of the first load W1 is corrected by the centering plate 33 to the center of the roller conveyor 30. To be done. During this time, the transportation of the luggage W on the roller conveyor 30 is stopped.

Next, as shown in FIG. 11, luggage W1 to W4.
Are transported, and first the first load W1 is loaded on the alignment table 31. Then, as shown in FIG. 12, the pusher plate 37 moves upward in the figure by the width of one piece of luggage, and pushes the first luggage W1 from the center of the alignment table 31 upward in the figure. That is, the center of the arranging table 31 is opened so that the next second baggage can be carried in. At the same time, the second load W2 is placed on the centering plate 33.
Centered by. Thereafter, the centered second load W2 is carried into the center of the alignment table 31 (FIG. 13), and is pushed downward from the center by the pusher plate 37 (FIG. 14). At the same time, the third luggage W3 is centered. The third centered luggage W3 is carried on the alignment table 31 (FIG. 15) and pushed upward by the pusher plate 37 (FIG. 1).
6). Here, as shown in the drawing, the first load W1 is also moved upward in the drawing together with the third load W3. At this time, similarly, the fourth load W4 is located between the centering plates 33, 33.

Next, as shown in FIG. 17, the second load W2 is moved by the pusher plate 37 to the end portion of the auxiliary base 31a on the lower side of the alignment table 31 in the drawing, and the second load W2 and the third load W2. A space for one bag is opened between the second bag W3. The fourth load W4 is pushed by the centering plate 33 and moved to a position where it can be carried into this gap. Then, as shown in FIG. 18, the fourth load W4 is carried in between the second load W2 and the third load W3, and the four loads W1 to W4 are thus arranged.
They are arranged in a line in the width direction of the loading platform 50 above.

In this way, the four packages W1 to W4 are aligned on the alignment table 3
When they are aligned on 1, the cylinders 31c are simultaneously actuated and the centering plates 31b are moved in parallel to each other, whereby the four loads W1 to W4 are moved.
Are centered on the alignment table 31 without any gap.

As described above, the alignment of the four loads W1 to W4 is completed, and then the pushing bar 15 waiting at the rear (right side in the drawing) is moved downward on the spot. At this point in time, the luggage W has not been carried in between the centering plates 33, 33 and is stopped in front of it, so the push-out bar 15 descends to a predetermined position. From this state, the horizontal slide mechanism 17 is operated and the push-out bar 15 is moved forward. Then, the above-mentioned aligned luggage W1 to W
Four are pushed forward at once. When the pushing bar 15 is moved to the tip position, the loads W1 to W4 are pushed out onto the vertical slide table 26. At this time, since the stopper 25 is in a state of projecting upward, the pushed loads W1 to W4 do not fall forward as they are.

In this way, after the loads W1 to W4 in the aligned state are pushed out onto the vertical slide table 26, the horizontal slide mechanism 17 is stopped and the cylinder 19 is operated to activate another slide mechanism. As a result, the push-out bar 15 is retracted by a predetermined distance so that it can be moved upward without interfering with the pushed loads W1 to W4. By operating the cylinder 18 and swinging the support arm 16 upward, the pushing bar 15
Is moved upward, and then the horizontal slide mechanism 17 is operated in the reverse direction to return the push-out bar 15 to the rear standby position. In the meantime, in the aligning apparatus 10, the loads W to be pushed out next are sequentially loaded onto the alignment table 31, and the four loads W are aligned on the alignment table 31.

When the loads W1 to W4 aligned on the vertical slide table 26 are pushed out, the vertical slide mechanism 2
2 operates to move the loads W1 to W4 to the height to be loaded next. Since it is initially loaded on the floor of the loading platform 50, the vertical slide table 26 is moved to the lowest position. Even at this lowest position, there is still a relatively large gap between the vertical slide table 26 in the horizontal state and the bed floor surface. Therefore, if the loads W1 to W4 are pushed out in this state, the loads W1 to W4 may be damaged. Therefore, when the loads W1 to W4 are loaded at the lowest position, that is, at the first stage, the cylinder 23 is operated and the vertical slide table 26 is tilted downward. As a result, the luggage W1 to W4
Will be pushed down while sliding down on the vertically slidable upper and lower slide table 26, and the shock received can be softened and damage can be prevented.

In this way, the vertical slide table 26
Are slanted when loading the first stage, and after moving to the predetermined height while keeping the horizontal state for the second stage and thereafter, the cylinder 24 is operated in the retracting direction to release the stopper 25. Then, after that, cylinder 2
9 is operated to operate the pantograph mechanism 28 to move the pushing bar 27 forward. Then, the luggage W1 to W4
Are pushed forward by the pushing bar 27 and finally loaded on the loading platform 50. When the loading is completed, the stopper 25 is returned upward, and then the vertical slide mechanism 22 is actuated to move the vertical slide table 26 to a fixed position, that is, a position at which the height is almost the same as that of the roller conveyor 30 (position indicated by a solid line in the figure). Returned to. By repeating this operation and sequentially stacking the loads W1 to W4, the loads W are loaded from the first stage to the uppermost stage in the innermost portion of the loading platform 50. Here, since the luggage W is pushed from the rear by the pushing bar 27 and loaded on the luggage carrier 50, there is almost no gap between the luggage W and the ceiling of the luggage carrier 50 when loading the luggage W on the uppermost stage. It is possible to carry out loading, and therefore the space of the loading platform 50 can be fully utilized to carry out loading work efficiently.

When the loading of the first row from the first stage to the uppermost stage is completed at the innermost portion of the loading platform 50 in this manner, the detection rod 41 is ejected again and abutted against the loaded cargo W. Then, the carriage 6 moves backward by the distance L based on the protruding distance of the detection rod 41, and moves to the position for loading the second row. Then, at this position, the above-described loading operation is repeated again to stack the first row from the second row to the top row. Note that, as described above, the position of the loading device 3 is corrected by the centering device 13 so that the loading device 3 is always located at the center of the loading platform 50 even when the cart 6 moves backward.

In the same manner, the carts 6 are sequentially retracted by a predetermined distance to load the luggage W on the third row, the fourth row, ... And finally when the carts 6 are retracted to the lift device 7, the loading platform 50 is loaded.
Luggage W is loaded in the full space. When loading the last row, when the carriage 6 transferred onto the slide table 7a is retracted, the lift device 7 is previously set.
The slide table 7a to the loading platform 50
Is lifted, and the switching valve for operating the sliding cylinder of the slide table 7a is switched to the center open position. As a result, when the conveyor 2 is contracted and the carriage 6 is retracted, the slide table 7a is also retracted as a unit, and the carriage 6 and the slide table 7a exit from the loading platform 5 and the last row can be loaded.

When the loading of the loads W is completed as described above, the lift device 7 is lowered while swinging the conveyor 2 downward to return the carriage and the loading device 3 to the original position. As described above, the automatic loading operation of the luggage W by the truck loader 1 of this example is completed.

In the loading operation described above, a case has been exemplified in which four loads W are aligned in one row in the width direction of the loading platform 50, but the present invention is not limited to this, and, for example, five loads W are loaded in each row width direction. It is also possible. In this case, five loads W1 to W5 are aligned at once by the aligning device 10 as described below.

19 to 21 show the operation of the aligning device 10 in the case of stacking five in each row. First, as shown in FIGS. 19 (a) to 19 (d), the first luggage W1 is sequentially centered by the centering plates 33, 33 at the center of the roller conveyor 30 (FIG. 19 (a)), and the rear aligning device 10
It is loaded into the area (Fig. (B)). And the first baggage W1
Is moved to the upper side in the figure by the pusher plate 37 ((c) in the same figure), and then the second load W2 is carried in ((d) in the same figure).

Next, as shown in FIGS. 20 (e) to 20 (h), this second load W2 is moved to the lower side in the figure ((e) in the figure).
After that, the third baggage W3 is carried into the gap between the second baggage W2 and the first baggage W1 (see the same figure).
(f)), the third load W3 and the first load W1 are moved upward in the drawing by the pusher plate 37 ((g) in the same figure). Then, the third bag W3 and the second bag W3
Since there is a gap between 2 and 4, the fourth baggage W4 is loaded into this gap (Fig. 2 (h)). After that, FIG. 21 (i),
As shown in (j), the fourth load W4 and the second load W2 are moved together by the pusher plate 37 to the lower side in the figure ((i) in the figure). Then, finally, the fifth load W5 is carried into the gap between the third load W3 and the fourth load W4 ((j) in the same figure). In this way, when the five loads W1 to W5 are loaded onto the alignment table 31, the centering plates 31b and 31b on both sides are moved to the cylinders 31c and 31c.
By the operation of 31c, they move parallel to each other,
As a result, the five loads W1 to W5 are centered so that there is no gap between them.

With the above, the alignment of the five packages W1 to W5 is completed. After that, in the same manner as in the case of stacking four in a row, the five loads W1 to W5 may be adsorbed and held by the adsorbing device 20 at a time, and the full load of the rear loading platform 50 may be loaded. In this way, it is possible to align the devices in the width direction of the loading platform 50 in the aligning device 10 and load them all at once regardless of how many columns are stacked.

According to the truck loader 1 of the present embodiment described above, the luggage W can be loaded in the loading space of the loading platform 50 in a short time without any manual labor.
Since the luggage W is pushed by the pushing bar 27 from the rear side to be loaded, the luggage W can be easily loaded on the uppermost stage of each row, and the space in the height direction of the loading platform 50 can be fully utilized.

Further, since the loading device 3 is provided with the centering device 13, the loading device 3 can always be positioned at the center of the loading platform 50 even if the stop position of the truck is a little bad, which is efficient. You can carry out loading work.

Further, since the lift device 7 is provided,
Even if there is a step between the floor and the loading platform 50, the carriage 6 and the loading device 3 can be easily placed on the loading platform 50 of the truck, and a switching valve for activating the slide cylinder of the slide table 7a is provided at the center. Since the slide table 7a can be brought into a state of following the height change of the luggage carrier 50 by keeping it in the open position, for example, even if the height of the luggage carrier 50 is changed depending on the loading amount of the cargo W, the lift device is operated. It is not necessary to operate 7 to adjust the height of the slide table 7a.

[0054]

According to the present invention, for a box-type rear door type cargo bed, the loading space is maximized in the width direction, the height direction and the depth direction, so that it can be performed in a short time without human labor. You can efficiently load your luggage. In addition, since it is smaller than the conventional gate type truck loader, its installation space is small.

[Brief description of drawings]

FIG. 1 is an overall side view of a truck loader and a truck bed according to an embodiment of the present invention.

FIG. 2 is a side view of the loading device.

FIG. 3 is a plan view of the loading device.

FIG. 4 is a rear view of the loading device.

FIG. 5 is a plan view of an alignment device and a centering unit.

FIG. 6 is a front view of an alignment table.

FIG. 7 is a front view of a centering unit.

FIG. 8 is a plan view of a horizontal slide mechanism.

FIG. 9 is a side view of an alignment device and a centering unit.

FIG. 10 is a plan view showing a procedure for arranging loads in the case of stacking four in a row, and is a view when the first load is centered.

FIG. 11 is a plan view showing a procedure for arranging loads in the case of stacking four in a row, in which the first load is loaded into the aligning device,
It is a figure when the second luggage is centered.

FIG. 12 is a plan view showing a procedure for arranging luggage in the case of stacking four in a row, and is a diagram when the first luggage is moved by the pusher plate.

FIG. 13 is a plan view showing a procedure for arranging loads in the case of stacking four pieces in a row, in which the second load is loaded into the alignment device,
It is a figure when the 3rd baggage is centered.

FIG. 14 is a plan view showing a procedure for arranging loads in the case of stacking four pieces in a row, and is a view when the second load is moved by the pusher plate.

FIG. 15 is a plan view showing a procedure for arranging loads in the case of stacking four pieces in a row, in which a third load is loaded into the alignment device,
It is a figure when the 4th load is centered.

FIG. 16 is a plan view showing a procedure for arranging loads in the case of stacking four pieces in a row, and is a view when the first and third loads are moved by the pusher plate.

FIG. 17 is a plan view showing a procedure for arranging loads in the case of stacking four in a row, and is a view when the fourth load is moved by the centering plate.

FIG. 18 is a plan view showing the procedure for arranging the packages in the case of stacking four in a row, and is a diagram when the fourth package is loaded into the alignment device.

FIG. 19 is a plan view showing a procedure for arranging loads in the case of stacking five pieces in a row, showing from the time when the first load is centered to the time when the second load is loaded on the alignment table.

FIG. 20 is a plan view showing a procedure for arranging loads in the case of stacking five pieces in a row, showing from the time when the third load is centered to the time when the fourth load is loaded on the alignment table.

FIG. 21 is a plan view showing a procedure for arranging loads in the case of stacking five pieces in a row, up to the time when the fifth piece of goods is centered and carried on the alignment table.

[Explanation of symbols]

 1 ... Track loader 2 ... Telescopic belt conveyor 3 ... Loading device 4 ... Swing device 5 ... Pin joint part 6 ... Bogie 7 ... Lifting device, 7a ... Slide table 10 ... Aligning device 11 ... First frame 13 ... Centering device 14 ... Extrusion Device, 15 ... Extrusion bar 17 ... Horizontal slide mechanism 20 ... Pushing device 21 ... Second frame 22 ... Vertical slide mechanism 25 ... Stopper 26 ... Vertical slide table 27 ... Pushing bar 30 ... Roller conveyor 31 ... Alignment stand 33 ... Centering plate 34 ... Stopper 37 ... Pusher plate 41 ... Detection rod 50 ... Package W ... Luggage

Claims (1)

[Claims] 1. A conveyor that is capable of expanding and contracting from the rear of the truck bed to the inner part, and is attached to the tip of this conveyor,
A loading device that moves between the rear and the inner part of the loading platform along with the expansion and contraction of the conveyor, and the loading device sequentially aligns the loads conveyed inside the loading platform by the conveyor in the width direction of the loading platform. And a pushing device capable of pushing a plurality of loads that are aligned by the aligning device from the rear side and loading the loads onto the loading platform at one time.