JP2010083668A - Article transfer system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an article transfer system capable of carrying a cargo from a truck even if an in-vehicle battery is weakened in electricity. <P>SOLUTION: Since a sensor 29 for detecting speeds of in-vehicle conveyors 25 and 26 is arranged at the aboveground conveyor 30 side, even if the in-vehicle conveyors 25 and 26 cannot be driven by in-vehicle driving sources 27 and 28 when the in-vehicle battery 85 being a power source of the in-vehicle conveyors 25 and 26 is weakened in electricity, the in-vehicle conveyors 25 and 26 are moved manually or forcibly by a vehicle outside (aboveground side) power source, and a speed of an aboveground conveyor 30 can be synchronized with a speed of the forcibly driven in-vehicle conveyor 25 or 26. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a system for transferring a load such as an engine from a truck to a conveyance line.

When the engine factory and the vehicle assembly factory are separated, the engine may be transported by truck.
Various techniques have been proposed for transferring packages loaded by trucks onto a conveyor on the receiving factory side (see, for example, Patent Documents 1 and 2).
JP-A-5-254669 (FIG. 1) Japanese Patent No. 3024358 (FIG. 2)

As shown in FIG. 1 of Patent Document 1, a conveyor belt (9) is provided on the loading platform (2) of the vehicle body (1) (the reference numerals in parentheses refer to those described in Patent Document 1, the same applies hereinafter). An endless conveyor belt (18) is provided outside 1).
The conveyor belt (9) on the loading platform (2) side is driven by an on-vehicle hydraulic pump (13).

However, if there is a problem with the in-vehicle hydraulic pump (13) or the engine (19) that drives the hydraulic pump (13), the conveyor belt (9) cannot be driven, and the cargo (P) is transferred to the endless conveyor belt (18). ) Cannot be moved to.
Even if trouble occurs in the on-board hydraulic pump (13) and engine (19), it is more preferable if the cargo (P) can be transferred to the endless conveyor belt (18).

  Moreover, as FIG. 2 of patent document 2 shows, the on-vehicle conveyor (18) is provided in the track (20), and the ground conveyor (16) is provided outside the track (20). The engine (13) can be transported from the on-vehicle conveyor (18) to the ground conveyor (16) or from the ground conveyor (16) to the on-vehicle conveyor (18).

By the way, although the position of the drive source of the on-vehicle conveyor (18) is not described, it is considered that it is placed on the truck (20). That is, it is considered that the drive source is a motor, and this motor is supplied with power from an in-vehicle battery.
By the way, the in-vehicle battery may be weakened depending on the usage time. Then, the on-vehicle conveyor (18) cannot be driven, and the engine (13) cannot be transferred from the truck (20) to the ground conveyor (16).
However, it is more preferable if the engine (13) can be moved from the truck (20) to the ground conveyor (16) even if the vehicle battery is weakened.

  An object of the present invention is to provide an article transfer system capable of transporting a load from a truck even if the in-vehicle battery becomes weak.

According to the first aspect of the present invention, a load is placed on a pallet, a plurality of pallets are loaded on a truck, transferred, and the pallet is transferred to a transfer line at a transfer destination, or the pallet is transferred from a transfer line to a truck In the article transfer system to be transferred,
The conveyor line is provided with a ground conveyor that horizontally transports the pallet, and a controller is provided in the vicinity of the ground conveyor,
The control unit is provided with a sensor for detecting the speed of the in-vehicle conveyor on the ground conveyor side, controls the speed of the ground conveyor so as to coincide with the speed of the in-vehicle conveyor, and transports between the in-vehicle conveyor and the ground conveyor. It is characterized by synchronizing speed.

  The invention according to claim 2 is characterized in that the truck is provided with a plurality of stages of on-vehicle conveyors, and the ground conveyor is provided with an elevating mechanism so as to match the ground height of these on-vehicle conveyors.

  In the invention which concerns on Claim 3, it has a ground side control part which drive-controls the said multi-stage vehicle-mounted conveyor from the ground side, It is characterized by the above-mentioned.

  In the invention according to claim 1, since the sensor for detecting the speed of the in-vehicle conveyor is provided on the ground conveyor side, the battery as the power source of the in-vehicle conveyor is weakened, and the in-vehicle conveyor cannot be driven by the in-vehicle driving source. Alternatively, the on-vehicle conveyor can be forcibly moved manually or by a power source outside the vehicle (on the ground side), and the speed of the on-vehicle conveyor can be synchronized with the speed of the on-vehicle conveyor that is forcibly driven.

  In the invention which concerns on Claim 2, since the operation | movement of each conveyor of a multistage in-vehicle conveyor can be controlled by the control part provided in the ground side, the loading efficiency of a truck can be improved.

  In the invention which concerns on Claim 3, the ground side control part can drive-control a multi-stage vehicle-mounted conveyor from the ground side.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a view showing a form of a load and a pallet, and the pallet 11 is a flat plate having a pair of fork insertion holes 12 and 12. Since such a pallet 11 is a general-purpose product (or a general-purpose product), a support member 14 having support portions 13 and 13 is attached to the upper surface. Then, a load 15 such as an engine with an AT transmission is placed on the pallet 11 via the support member 14.

FIG. 2 is a plan view of an article transfer system according to the present invention. The article transfer system 20 receives a pallet 11 from the truck 21 and receives the pallet 11 from the truck 21 or the pallet 11 to the truck 21. And a conveyance line 23 for returning.
The transport line 23 includes, for example, a first ground conveyor 30, a second ground conveyor 40 adjacent to the first ground conveyor 30, and third to fifth ground conveyors 50, 60, 70 adjacent to the second ground conveyor 40. It consists of. For later explanation, the longitudinal axis of the track 21 is the x axis, and the axis orthogonal to the x axis is the y axis.

The structure of the track 21 and the conveyors 30 to 70 described above will be described in detail.
FIG. 3 is a cross-sectional view of a truck according to the present invention. The truck 21 includes a loading platform 24 having a first on-vehicle conveyor 25 and a second on-vehicle conveyor 26. That is, the 2nd vehicle-mounted conveyor 26 comprises a 2nd floor. The first vehicle-mounted conveyor 25 is driven by a first vehicle-mounted drive source 27, and the second vehicle-mounted conveyor 26 is driven by a second vehicle-mounted drive source 28.
The in-vehicle drive sources 27 and 28 are preferably electric motors driven by in-vehicle batteries, but may be hydraulic motors.

FIG. 4 is a view taken in the direction of the arrow 4 in FIG. 2. The first ground conveyor 30 that transports the pallet 11 along the x axis is driven by the first ground drive source 31 and can be moved up and down by the first lifting mechanism 32. Is retained.
The first elevating mechanism 32 is not limited in configuration and type as long as the ground height of the first ground conveyor 30 can be arbitrarily changed. For example, the first elevating mechanism 32 is fixed to the base 33 and the base 33 with a pin 34 so as to be swingable. Drive link 35, a cylinder unit 36 that drives the drive link 35, a driven link 38 that is swingably stopped by a pin 37 at the center of the drive link 35, and upper ends of the drive links 35. And a pantograph link type lifting device including the top plate 39 supported by the driven link 38 is preferable.

  The cylinder unit 36 is preferably an electric cylinder including a servo motor, a ball screw, and a ball nut capable of position control, but may be a hydraulic cylinder called a stepping cylinder.

  When the piston rod 36a of the cylinder unit 36 is retracted, the drive link 35 rotates counterclockwise around the pin 34, and the lower end of the driven link 38 moves to the left along the elongated hole 33a. As a result, the top board 39 moves to the position indicated by the imaginary line. Thus, the top plate 39 can be arbitrarily moved up and down by the operation of the cylinder unit 36, and the ground height H1 of the first ground conveyor 30 can be freely set.

FIG. 5 is a view taken in the direction of arrows 5-5 in FIG. 2, and the second ground conveyor 40 is a conveyor capable of transporting loads along the x-axis and the y-axis as shown in FIG.
For this purpose, the second ground conveyor 40 is, for example, a pantograph link type second elevating mechanism 42 (the configuration is the same as the first elevating mechanism, so the components used are those of the first elevating mechanism. The top plate 43 of the elevating mechanism and the fourth elevating mechanism is also provided with a y-axis conveyor 44, the top plate 43 is provided with jacks 45, 45, and the piston rods of these jacks 45, 45 are provided with a lift plate 46. The elevating plate 46 is provided with an x-axis conveyor 47.

  When the x-axis conveyor 47 is operated by the second x ground drive source 48, the x-axis conveyor 47 is raised to the position indicated by the imaginary line by the jacks 45 and 45. Thus, the pallet can be received from the first ground conveyor 30.

  When the pallet is received, the second x ground drive source 48 is stopped, the jacks 45, 45 are retracted, and the x-axis conveyor 47 is lowered to the position indicated by the solid line. Then, the pallet is placed on the y-axis conveyor 44. The subsequent operation will be described with reference to the next figure.

FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 2, and a third ground conveyor 50, a fourth ground conveyor 60, and a fifth ground conveyor 70 are arranged next to the second ground conveyor 40 in this order.
The y-axis conveyor 44 of the second ground conveyor 40 is driven by a second y ground drive source 49.

The third ground conveyor 50 includes a third ground drive source 51 and a third lifting mechanism 52. The configuration of the third lifting mechanism 52 is the same as that of the first lifting mechanism (FIG. 4, reference numeral 32).
The fourth ground conveyor 60 includes a fourth ground drive source 61 and a fourth lifting mechanism 62. The configuration of the fourth elevating mechanism 62 is the same as that of the first elevating mechanism (FIG. 4, reference numeral 32).

  The fifth ground conveyor 70 includes an upper conveyor 71 and a lower conveyor 72, and is configured to return an empty pallet by the lower conveyor 72 while conveying the pallet on which the load is placed by the upper conveyor 71.

  FIG. 7 is a layout diagram of the control unit according to the present invention, and a vehicle-mounted control unit 80 for controlling the first vehicle-mounted drive source 27 and the second vehicle-mounted drive source 28 is provided at the rear part of the truck 21. A ground control unit 90 is provided on the ground facility side. Details of these control units 80 and 90 will be described.

  First, the vehicle-mounted control unit 80 includes a first electromagnetic switch 82 that controls on / off of the first vehicle-mounted drive source 27 based on the first manual switch 81, and a second vehicle-mounted drive source 28 based on the second manual switch 83. A second electromagnetic switch 84 that controls on / off, a power supply switching unit 86 that switches and supplies the stored energy of the in-vehicle battery 85 to the first in-vehicle drive source 27 and the second in-vehicle drive source 28, and A connector 87 for supplying power to the terminal and the terminal of the battery 85 from the outside, and a connector 88 for sending a control signal from the outside to the first electromagnetic switch 82 and the second electromagnetic switch 84 are provided.

  On the other hand, the ground control unit 90 is provided with an information from a sensor 29 that is provided at the entrance of the first ground conveyor 30 and monitors the speed of the first vehicle-mounted conveyor 25 or the speed of the second vehicle-mounted conveyor 26. A speed detector 91 that detects the speed of the conveyor 25 or 26, and a first ground drive source based on the speed detector 91 so that the speed of the ground conveyors 30 and 40 matches the speed of the in-vehicle conveyor 25 or 26. A drive unit 92 that controls the inverter 31 and the second ground drive source 48 by an inverter, and a track controller 93 that is provided to control the in-vehicle conveyor 25 or 26 from the ground when necessary are provided. Since the center 29 moves up and down together with the first on-vehicle conveyor 25, it can face the position indicated by the solid line and the position indicated by the imaginary line.

Furthermore, a harness 94 is extended from the track control unit 93, and a connector 95 corresponding to the connector 88 is provided at the tip of the harness 94.
Further, a DC power source 96 is prepared on the ground side, a harness 97 is extended from the DC power source 96, and a connector 98 corresponding to the connector 87 is provided at the tip of the harness 97. That is, a region surrounded by a broken line is provided on the ground side (facility side).

The operation of the control units 80 and 90 described above will be described.
When the track 21 is placed on the first ground conveyor 30, the harnesses 94 and 97 are extended, the connector 98 is connected to the connector 87, and the connector 95 is connected to the connector 88.

  The on-vehicle conveyor 25 or 26 is operated manually or automatically, and the speed thereof is the same as that of the first ground conveyor 30. That is, since the speed of the on-vehicle conveyor 25 or 26 is detected by the sensor 29, the speed of the first ground conveyor 30 is controlled so as to match the speed of the on-vehicle conveyor 25 or 26. Similarly, the speed of the second ground conveyor 40 is matched with the speed of the first ground conveyor 30. The speed may be synchronized by controlling the speed of the on-vehicle conveyor 25 or 26 so as to match the speed of the first ground conveyor 30.

  If the first ground conveyor 30 is a non-driving conveyor composed of free rotating rollers, the pallet 11 sent from the in-vehicle conveyor 24 hits the free rotating rollers in a stationary state, and then the free rotating rollers rotate. start. That is, if the conveyors are asynchronous, not a little impact force is applied to the pallet 11. This impact force is undesirable because it leads to damage to the conveyor and pallet 11.

  In this regard, in the present invention, since the speeds of the conveyors 25, 30, and 40 are synchronized, no impact force is generated. Therefore, it is possible to avoid damage to the conveyor and damage to the pallet 11.

  The control unit 79 also performs the lifting control so that the first to second ground conveyors 30 and 40 match the level (the ground height) of the on-vehicle conveyors 25 and 26.

Next, a case where an abnormality occurs in the in-vehicle battery 85 will be described.
Since the sensors 29 for detecting the speeds of the in-vehicle conveyors 25 and 26 are provided on the ground conveyor 30 side, the in-vehicle battery 85 as a power source of the in-vehicle conveyors 25 and 26 is weakened, and the in-vehicle conveyors 25 and 26 are connected to the in-vehicle drive source 27. , 28, the on-vehicle conveyors 25, 26 are forcibly moved manually or by an external power source (on the ground side), and the speed of the on-ground conveyor 30 is forcibly driven to the speed of the on-vehicle conveyor 25 or 26. Can be synchronized.

Next, how to carry out a large number of pallets 11 will be described.
FIG. 8 is a diagram for explaining the pallet unloading procedure. As shown in FIG. 8A, a truck 21 full of pallets 11 is placed on the first ground conveyor 30. Then, the entire pallet 11 is transported along the x-axis from the rear part of the truck 21 as indicated by an arrow (1).

At the four corners of the second ground conveyor 40, photoelectric tube sensors comprising a light projecting element 54 and a light receiving element 55 are provided, and photoelectric tube sensors comprising a light projecting element 56 and a light receiving element 57 are provided.
With these two pairs of photoelectric tube sensors, it is detected that four pallets 11 are placed on the second ground conveyor 40, and the control unit (see FIG. 7, reference numeral 79) is the first ground conveyor 30 and the second ground conveyor. By stopping 40, the conveyance in the x-axis direction is stopped.
Next, as shown to (b), only the part currently mounted on the 2nd ground conveyor 40 is conveyed to a y-axis direction, and is moved to the 4th ground conveyor 60 (arrow (2)).

As shown in (c), four pallets 11 are placed on the fourth ground conveyor 60.
Half of the remaining pallet 11 is moved to the third ground conveyor 50 as indicated by an arrow (3), and the rest is transferred to the second ground conveyor 40 as indicated by an arrow (4).

FIG. 9 is a diagram for explaining a procedure for transferring pallets to the fifth ground conveyor. Twelve pallets 11 are placed on the second to fourth ground conveyors 40, 50 and 60.
Next, the entire pallet 11 is moved as indicated by the arrow (5) and moved to the fifth ground conveyor 70.

Since the 1st in-vehicle conveyor 25 shown in FIG. 7 became empty, the 1st ground conveyor 30 and the 2nd above-ground conveyor 40 are raised, and the pallet 11 currently mounted on the 2nd on-vehicle conveyor 26 is the same procedure. Unload at.
Since the first ground conveyor 30 and the second ground conveyor 40 are provided with a lifting mechanism, even if the tire air pressure changes or the type of the track changes, and the ground height of the on-vehicle conveyors 25 and 26 changes, The cargo handling work can be performed following.
Therefore, according to the present invention, an article transfer system suitable for a truck whose ground height is likely to change is provided.

FIG. 10 is a supplementary explanatory diagram of FIG. 6 and corresponds to the drawing when FIG. 6 is viewed from the back.
Since the ground conveyors 40 to 60 are provided with the elevating mechanisms 42 to 62, it is possible to smoothly transfer the cargo 15 that has been stacked on the truck 21.

  FIG. 11 is an explanatory diagram of the operation of FIG. 10, and the pallet 11 can be moved smoothly by matching the height of the ground conveyors 40 to 60 with the upper conveyor 71 as shown in FIG. Moreover, as shown to (b), the height of the ground conveyors 40-60 is made to correspond to the lower stage conveyor 72, the pallet 11 can be returned and it can return to a track | truck (FIG. 10, code | symbol 21).

  In the embodiment, the load is an engine with an AT transmission, but the type and shape of the load are not particularly specified.

  The present invention is an article transfer system suitable for transferring an engine with an AT transmission.

It is a figure which shows the form of a load and a pallet. 1 is a plan view of an article transfer system according to the present invention. It is sectional drawing of the track | truck concerning this invention. FIG. 4 is a view taken in the direction of arrow 4 in FIG. 2. Fig. 5 is a view taken in the direction of arrows 5-5 in Fig. 2. FIG. 6 is a sectional view taken along line 6-6 of FIG. It is an arrangement plan of a control part concerning the present invention. It is a figure explaining the carrying-out procedure of a pallet. It is a figure explaining the procedure which moves a pallet to a 5th ground conveyor. FIG. 7 is a supplementary explanatory diagram of FIG. 6. It is effect | action explanatory drawing of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Pallet, 15 ... Luggage, 20 ... Goods transfer system, 21 ... Truck, 23 ... Conveyance line, 25, 26 ... In-vehicle conveyor, 27, 28 ... In-vehicle drive source, 29 ... Sensor for detecting speed, 30, 40 50, 60, 70 ... ground conveyor, 31 ... ground drive source, 32, 42, 52, 62 ... lifting mechanism, 87, 88, 95, 98 ... connector, 80 ... vehicle-mounted control unit, 90 ... ground control unit.

Claims (3)

In an article transfer system that places a load on a pallet, loads the pallet on a plurality of trucks, transfers the pallet to the transfer line at the transfer destination, or transfers the pallet from the transfer line to the track.
The conveyor line is provided with a ground conveyor that horizontally transports the pallet, and a controller is provided in the vicinity of the ground conveyor,
The control unit is provided with a sensor for detecting the speed of the in-vehicle conveyor on the ground conveyor side, controls the speed of the ground conveyor so as to coincide with the speed of the in-vehicle conveyor, and transports between the in-vehicle conveyor and the ground conveyor. An article transfer system characterized by synchronizing speed.   2. The article transfer according to claim 1, wherein the truck includes a plurality of stages of on-vehicle conveyors, and the ground conveyor includes an elevating mechanism so as to match the ground height of these on-vehicle conveyors. system.   The article transfer system according to claim 2, further comprising a ground-side control unit that drives and controls the plurality of stages of the on-vehicle conveyor from the ground side.

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