JPH0692470A - Truck loader - Google Patents

Abstract

PURPOSE:To load a deck sufficiently to the innermost part of the load carrying plaform of a large-sized truck in spite of the small installation space, by installing a loading device for successively loading the loaded deck transported to the top edge position into the loading space of the load carrying platform of the truck, at the top edge position of an expandable conveyor. CONSTITUTION:A four-stage expandable belt conveyor 7 driven by a motor is installed on a platform 4 for loading a load 2 from the rear part onto deck 2 of a truck 1, and a dolly 9 equipped with a load loading robot 8 for successively loading the load3 sent by the four-stage expandable belt conveyor 7 into the loading space on the load carrying platform 2 of the truck 1 is installed at the top edge position of the four-stage expandable belt conveyor 7. A truck loader 44 can advantageously carry out the easy loading of the load up to the max. limit of the load carrying platform ranging to the innermost part of the capacity of the deck of the large-sized truck, in spite of the fact that the outer shape in case of the contraction of the conveyor in the min. stroke can do with a small-size and the installation space can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a heavy-duty truck bed, and more particularly to a truck loader for loading luggage onto a truck bed in which the luggage bed is covered with panels, hollows and the like to load and unload luggage from the rear.

[0002]

2. Description of the Related Art Conventionally, in the case of a large truck with a box-shaped rear door in which the luggage carrier is covered with panels, hollows, and the like, the luggage is generally lifted up to the height of the luggage carrier by a lift and then manually loaded. Push the luggage to the back of the luggage and stack them side by side, or move the luggage gripper up and down while holding the luggage,
A truck loader that uses a gate-type luggage transport device that moves left and right and front and back to stack loads from the back on a truck bed together with a conveyor with a trolley, or a wing body that opens the truck to the roof in addition to the rear As
There is a truck loader that uses a pallet to load and unload luggage on a truck all at once in a row.

[0003]

However, in the case of loading a load by using a lift, there are drawbacks that the efficiency is poor because the inside of the truck is manually operated and the operator is burdened too much. In the case of a truck loader that uses a type of baggage transporter, the equipment including the conveyor with trolley is too large and requires a considerable space for installation. However, in the case of a truck loader that uses a pallet on a wing body truck to load and unload cargo, a wing body truck cannot be used for loading and unloading, and a pallet is used. However, there was a drawback that the sender had to collect the pallet from the destination.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a truck loader which is small and requires a small installation space, but which can easily load luggage to the back of a large truck.

[0005]

SUMMARY OF THE INVENTION That is, the present invention is capable of extending substantially the length of the truck bed and positively transporting the cargo onto a frame that forms a platform for loading luggage with the back of the truck bed. In the truck loader, a telescopic conveyor is attached, and a loading device is attached to the tip position of the telescopic conveyor to sequentially load the cargo conveyed to the tip position into the loading space of the truck bed.

[0006]

In the truck loader constructed as described above, when the conveyor is in the contracted state of the minimum stroke, the truck is operated to move the rear of the loading platform so as to be aligned with the tip of the conveyor. If the conveyor is extended when the truck is in line with the conveyor, the conveyor will extend straight in the truck bed, and the loading device at the conveyor tip will reach the deepest point of the bed at about the maximum stroke of the conveyor. The conveyor stretching operation is stopped and the cargo is transported to the back of the loading platform through the stretched conveyor. When the cargo reaches the conveyor tip position in this way, the loading device operates to stack the cargo that reaches the conveyor tip position side by side vertically and horizontally in the back of the truck bed, and when the cargo is completely lined up, the conveyor is The cargo carried on the conveyor is reduced in size by one row, and the cargo conveyed on the conveyor is sequentially piled up from the back to the second row position, and by repeating the above-mentioned operations in sequence, the cargo bed has the maximum cargo bed capacity. Is loaded.

[0007]

As a result, according to the truck loader of the present invention, when the conveyor having the smallest stroke is reduced in size, the outer shape is small and the installation space is small. There is an effect that can be done easily.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the structure of one embodiment of the present invention will be described with reference to the drawings. A four-stage telescopic belt conveyor 7 driven by motors 5 and 6 is attached to a platform 4 for loading luggage 3 from the back of the truck 1 on the truck 1, and
At the tip of the 4-stage telescopic belt conveyor 7, a loading device for sequentially loading the loads 3 sent by the 4-stage telescopic belt conveyor 7 into the loading space of the loading platform 2 of the truck 1, in this case, a load-loading robot 8 is provided. A dolly 9 is attached.

That is, at the position of the platform 4 where the truck 1 comes close to the back with its bed 2 behind and stops,
The base frame 10 of the 4-stage telescopic belt conveyor 7 is adjusted to a specific height according to the position of the loading platform 2 of the truck 1 via the supporting legs 11 and 12, the shaft 13 on the supporting leg 11, and the hydraulic cylinder 14 on the supporting leg 12. The first intermediate frame 15, the second intermediate frame 16, and the front end frame 17 of the 4-stage telescopic belt conveyor 7 are fitted to each other with the width gradually reduced to the base frame 10 and are appropriately fitted to each other. It is assembled so as to be able to smoothly reciprocate in the longitudinal direction via a roller 18, and these frames 10, 15 to 17 are assembled.
Is attached to each driven sprocket 20 and a drive sprocket 21 for driving the motor 5, which are rotatably attached to the frames 10, 15 and 16 by attaching a chain 19 whose both ends are fixed to the rear end of the tip frame 17 to the motor 5 in this state. By rotating the left or right, the base frame 10
The first intermediate frame 15, the second intermediate frame 16, and the tip frame 17 can be freely expanded and contracted on the basis of the above, and the driven roller 22 and the base rotatably attached to each of the frames 10, 15-17. On the drive roller 23 of the motor 6 which is attached to the frame 10, the belt 24 for conveying the luggage 3 is attached to each frame 1 by the chain 19.
It is stretched so that it can extend and contract in synchronization with the extension and contraction of 5 to 17.

At the tip position of the four-stage telescopic belt conveyor 7, that is, at the tip position of the tip frame 17, the cart 9 with the loading robot 8 is provided, and in this case, the left and right outrigger frames 25 are provided with guide rails 26 and guide grooves 27. And a motor 30 for supporting the ball screw 28 through a ball nut 28 and a fixing nut 29.
The baggage loading robot 8 is attached to the bogie frame 31 that is vertically adjustable by positive rotation by the, and the outriggers 33 for preventing falling of the left and right outrigger frames 25 are vertically driven by the hydraulic cylinders 32.
And a truck 9 with a luggage loading robot 8 to which a hydraulic cylinder 34 actuated wheel 35 with a brake 35 is attached.
7, distance sensors 39 to 43 for detecting the intervals between the back plate 38 and the luggage carrier 2 are appropriately attached.

Next, the operation of this embodiment will be described.
In the truck loader 44 configured as described above, 4
When the stage stretchable belt conveyor 7 is in the contracted state of the minimum stroke, the truck 1 is operated so that the rear of the loading platform 2 is aligned with the tip of the four stage stretchable belt conveyor 7 in a straight line. When the truck 1 is aligned with the conveyor 7, the motor 5 is driven to extend the conveyor 7 and
When the truck 9 comes to the loading platform 2 of the truck 1, the hydraulic cylinder 14 operates in accordance with the output from the distance sensor 39 for detecting the floor distance, and the tip of the conveyor 7 is slightly lifted according to a preset distance. The conveyor 7 extends in a straight line in the carrier 2 without contacting the carrier 9 with the floor of the carrier 2 of the truck 1 or with the wheels 36 of the carrier 9 lightly contacting the floor of the carrier 2 of the truck 1. At the time of the maximum stroke of the conveyor 7 when the carriage 9 with the luggage loading robot 8 at the tip reaches the innermost part of the loading platform 2, the output from the distance sensor 40 for detecting distance to the back plate 38 leaves a preset loading space. When the output corresponding to the distance is reached, the motor 5 is stopped, the stretching operation of the conveyor 7 is stopped, and the hydraulic cylinder 14 is operated to activate the weight of the entire conveyor 7 and the balun. In this state, the wheels 36 of the carriage 9 are brought into contact with the luggage carrier 2, and the hydraulic cylinders 32 are operated to bring the outriggers 33 into contact with the luggage carrier 2 so that the carriage 9 is stable even when the luggage loading robot 8 is activated. In a state where the posture can be maintained, the motor 6 is driven to rotate the belt 24 of the conveyor 7, and the load 3 is conveyed to the back of the loading platform 2 through the extended conveyor 7.

When the load 3 reaches the tip position of the conveyor 7 in this way, the vacuum type work gripping tool 46 at the tip of the arm 45 of the robot 8 holds the load 3 reaching the tip position of the conveyor, and at the same time, the loading platform of the truck 1. (2) Stacked vertically and horizontally in the inner part, and in the state where the pusher 47 attached to the tip of the arm 45 is also actuated to complete the in-sequentially completed operation, the hydraulic cylinder 32 is actuated to pull up the outrigger 33 and then the motor 5 is driven Then, the conveyor 7 is reduced by one line of the parcels 3 and the outriggers 33 are ejected again, the motor 6 is driven again, and the parcels 3 conveyed on the conveyor 7 are moved to the second line position from the back. Then, the cargo 3 having the maximum cargo bed volume is loaded on the cargo bed 2 of the truck 1 by sequentially arranging and stacking them and repeating the same operation. In addition, when the 4-stage telescopic belt conveyor 7 extends from the minimum length state on the loading platform 2 of the truck 1, when the conveyor 7 and the stop position of the truck 1 are displaced as shown in FIG. Cart 9 at the tip
Interferes with the tilt 37 of the conveyor 7, so the distance sensors 41 to 43 monitor the forward movement.

That is, when the measured value by the distance sensor 42 is a and the measured value by the distance sensor 41 is c, the left and right shifts are monitored by advancing the conveyor 7 when a-c is larger than a set value. Stop it. Further, if the measured value by the distance sensor 42 is a and the measured value by the distance sensor 43 is b, the stop angle θ of the truck 1 is monitored by the distance between the distance sensor 42 and the distance sensor 43 by d. If so, number 1 When the calculated angle is larger than the set value, the advance of the conveyor 7 is stopped.

Further, when the loading platform 2 of the truck 1 is tilted in the left-right direction, the cart 9 at the tip also leans along the loading platform 2 of the truck 1, and when the cart 9 leans, the tip frame 17 and the intermediate frame. 16 also inclines, and therefore, when the load 3 is conveyed, the belt 24 of the conveyor 7 is likely to meander. Also, if the trolley 9 is greatly tilted, the robot 8
Also tilts, making it difficult to load luggage 3
Is required to be held horizontally, and as a method for holding it horizontally, the tilt sensor 48 is attached to the carriage 9 and the tilt sensor 4
When 8 is not detecting the horizontal, one of the corresponding left and right ball screws 28 is rotated by the motor 30 so that the carriage frame 31 is parallel to the floor surface of the loading platform 2 of the truck 1, and in reality, a four-stage telescopic belt conveyor. The whole 7 is aligned with the floor of the loading platform 2 of the truck 1 and thereby the mounting surface of the loading robot 8 is leveled.

Further, as shown by the solid line in FIG. 9, the robot 8 is moved back to the ideal position and stopped.
Teaches, for example, teaches by loading luggage 3 at the corner A of the loading platform 2 of the truck 1, but in the actual case, the truck 1 stops in the state shown by the chain double-dashed line in FIG. However, in this case, the luggage 3 needs to be loaded at the point A ', and at the points A and A', the length from the turning center of the robot 8 to the tip of the loading arm 45 is different, so the luggage loading data is corrected. Therefore, the position of the center of rotation of the robot 8 on the bed 2 of the truck 1 is measured using the distance sensors 40 to 43.

In other words, the solid line in FIG. 9 indicates that the truck 1 is back stopped in an ideal state, and the turning center of the robot 8 is located at the center of the width of the loading platform 2 of the truck 1 (the turning center of the robot 8 is a four-stage telescopic belt conveyor 7). The center line of the conveyor 7 coincides with the width center of the bed 2 of the truck 1). In this state, the length measured by the distance sensors 41, 42, 43, a shown in FIG. Teaching is carried out so that the loads 3 are loaded at the corner A point of the loading platform 2 of the truck 1 in the same ideal condition for b and c. However, in actual use, the track 1 is rarely at the ideal position and usually stops in the state shown by the chain double-dashed line in FIG. It is necessary to load the luggage 3 at the point A ′ shown in FIG. 9 on the loading platform 2 of No. 1 (if the loading operation is performed while teaching in the ideal state, the luggage 3 interferes with the back plate 38 of the truck 1). Then, the distance sensors 40, 41, 42, 43 measure a, b, c, g shown in FIG. 9 to calculate the amount of deviation between the ideal position of the truck 1 and the current position, and the robot 8 The positions of the loading point of the luggage 3 and the point A shown in FIG. 9 are calculated.

First, the teaching point A of the robot 8 becomes (X: Y) when teaching is performed with rectangular coordinates with the turning center of the robot 8 as (0: 0), and A '
Is (X + ΔX: Y + ΔY), and ΔX and ΔY which give a command to the robot 8 to load the luggage 3 on this A ′ are calculated from the measurement lengths of the distance sensors 40, 41, 42 and 43, and the A ′ point is calculated. When calculated, it becomes as follows.

Lengths measured by the distance sensors 40, 41, 42, 43: a, b, c, g Dimensions from the turning center of the robot 8 to the distance sensors 40 to 43: f, h, j Distance sensors 42, 43: Mounting dimension with 43: d The angle between the ideal stop state of the track 1 and the actual stop state is θ: Where number 3 Let K be K, the X coordinate (X + ΔX) of point A is The Y coordinate (Y + ΔY) of point A'is Therefore, the taught data is corrected according to the coordinates (X + ΔX) · (Y + ΔY) of the point A ′, the arm 45 of the robot 8 is operated, and even if there is a displacement between the track 1 and the conveyor 7, the load 3 is loaded. The truck 1 can be loaded accurately on the loading platform 2 in the ideal position where teaching is performed. In addition, the baggage loading robot 8 moves the luggage 3 that has been conveyed to the tip position of the 4-stage telescopic belt conveyor 7.
Can be a loading device of any type, such as a gate type, for sequentially loading cargo into the loading space of the loading platform 2 of the truck 1,
Further, the four-stage telescopic belt conveyor 7 can be slid to the left or right or can be slightly turned to facilitate alignment with the track 1, and the four-stage telescopic belt conveyor 7 can be used for chains, rollers, etc. Can be used as a telescopic conveyor of any type, and the supporting legs 11 and 12 as a frame for supporting the four-stage telescopic belt conveyor 7 can be replaced with a table lifting device, and the table lifting device can slide left and right, An orientation adjustment mechanism can be provided.

[Brief description of drawings]

FIG. 1 is an overall explanatory diagram showing a usage state of a truck loader 44.

FIG. 2 is a detailed view of the track 1 side in FIG.

FIG. 3 is a detailed view of a truck loader 44 side in FIG.

FIG. 4 is an explanatory diagram of a 4-stage telescopic belt conveyor 7 in the truck loader 44.

FIG. 5 is an external view of a carriage 9 with a loading robot 8.

FIG. 6 is an external view of the loading robot 8 and a dolly 9 in a state where a cover is removed.

FIG. 7 is a plan view of FIG.

8 is an explanatory diagram showing a positional relationship between the truck loader 44 and the truck 1. FIG.

9 is an explanatory diagram showing a positional relationship between the loading robot 8 and the truck 1. FIG.

[Explanation of symbols]

 5 motors 6 motors 7 4-stage telescopic belt conveyors 8 loading robots 9 carts 10 base frames 11 support legs 12 support legs 13 shafts 14 hydraulic cylinders 15 first intermediate frames 16 second intermediate frames 17 tip frames 18 rollers 19 chains 20 driven sprockets 21 Drive Sprocket 22 Driven Roller 23 Drive Roller 24 Belt 44 Track Loader 46 Work Grasping Tool

Claims (1)

[Claims] 1. A telescopic conveyor capable of extending to almost the length of the bed of the truck and capable of positively transporting the load is mounted on a frame forming a platform for loading luggage with the back of the bed of the truck. A truck loader, characterized in that a loading device is attached to a tip position of a conveyor for sequentially loading a load conveyed to a tip position into a loading space of a truck bed.