JP4282835B2 - Cargo handling equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cargo handling and conveying apparatus that conveys cargo while mounted on a portal pallet.
[0002]
[Prior art]
Conventionally, a cargo handling device includes a gate-type pallet composed of a loading platform and legs, and a conveyance cart that crawls under the gate-type pallet and lifts and conveys the gate-type pallet with a pallet lifting device provided in the vehicle body. Is formed.
[0003]
Then, when transporting the portal pallet carrying the cargo by the transport cart, the transport cart with the pallet lifting device lowered is inserted under the portal pallet, and then the pallet lifting device is raised. Carry with the portal pallet lifted. Then, after carrying the portal pallet to a predetermined position, the pallet lifting device is lowered to lower the portal pallet, and then the transport carriage is withdrawn from under the portal pallet.
[0004]
[Problems to be solved by the invention]
In general, this transport cart is equipped with safety devices such as touch sensors and warning lights so that it can travel safely, but the portal pallet is not equipped with safety devices such as touch sensors and warning lights. .
[0005]
Therefore, when transporting the portal pallet with the transport trolley, if the transport trolley gets under the gate pallet, safety devices such as touch sensors and warning lights provided on the transport trolley are blocked by the transport pallet. Safety devices such as touch sensors and warning lights provided on the cart will not function sufficiently.
[0006]
By the way, it is relatively easy to install safety devices such as touch sensors and warning lights on the portal pallet. However, installing a power supply and control device on the portal pallet is not limited to the structure of the portal pallet or various It is difficult due to cost.
[0007]
The present invention solves such a conventional problem, and the purpose of the present invention is a cargo handling transport that can ensure the safety of operation without significantly modifying the existing portal pallet or transport cart. To provide an apparatus.
[0008]
[Means for Solving the Problems]
To achieve the above object, the present invention relates to a portal pallet composed of a loading platform and a leg, and a conveyance that lifts and conveys the portal pallet by a lifter provided in the vehicle body, under the portal pallet. In the cargo handling and conveying apparatus comprising a carriage, the power supply block is provided on the lifter, and a current collector plate is provided on the portal pallet so as to face the power supply block, and when the portal pallet is lifted by the lifter, the power supply block And the current collector plate are electrically connected to each other.
[0009]
As described above, a power feeding block is provided on the lifter of the transport carriage, and a current collector plate is provided on the portal pallet so as to face the power feeding block. The block and the current collector plate of the portal pallet are electrically connected securely.
[0010]
Therefore, power can be supplied from the transport carriage to the portal pallet via the power supply block provided on the lifter of the transport carriage and the current collector plate provided on the portal pallet, and an electrical signal can be sent from the sensor provided on the portal pallet to the transport carriage. Can feedback.
[0011]
At this time, it is desirable to provide a touch sensor on the leg of the portal pallet and to electrically connect the touch sensor and a current collector plate installed on the portal pallet. Further, it is desirable to provide an alarm lamp on the loading platform of the portal pallet and to electrically connect the alarm lamp and a current collector plate installed on the portal pallet.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
As shown in FIGS. 1 and 2, the cargo handling and conveying apparatus 1 of the present invention includes a portal pallet 2 and a conveying cart 3.
The gate-type pallet 2 is formed of a loading platform 4 on which cargo is placed and a total of six (three on one side) legs 5 that support the loading platform 4.
[0014]
The portal pallet 2 includes touch sensors 6 on both sides thereof. The touch sensor 6 has a string shape and is attached over the three legs 5. The attachment position of the touch sensor 6 is preferably as close as possible to the lower end of the leg 5. In addition, a large number of warning lights 7 are attached around the loading platform 4 at regular intervals.
[0015]
The portal pallet 2 includes an electric hood 8 on the loading platform 4 to protect the cargo A placed on the loading platform 4. The electric hood 8 is formed from two parts, a front part 8a and a rear part 8b, and can be stored in the front end part and the rear end part of the loading platform 4 respectively when unloading and unloading.
Further, the portal pallet 2 is provided with an electric heater 9 on the loading platform 4 so that the cargo A in the hood 8 needs to be kept warm.
[0016]
Further, as shown in FIG. 4, a reflecting mirror 10 is provided on the inner surface of the leg 5 at the center of the pallet, and the light emitted from the light projecting means of a positioning sensor (not shown) provided on the transport carriage 3 is detected by the positioning sensor. The light is reflected toward the light receiving means.
[0017]
On the other hand, the height of the vehicle body 11 is low so that the conveyance cart 3 can be inserted under the portal pallet 2. Reference numeral 12 denotes a drive wheel provided on the vehicle body 11. As shown in FIG. 5, the vehicle body 11 is provided with a pallet lifter 13 that raises and lowers the portal pallet 2.
[0018]
A power supply block 15 supported by an L-shaped support member 14 is provided on a side surface of the pallet lifter 13 so as to move up and down together with the pallet lifter 13. A current collector plate 16 is provided on the lower surface of the portal pallet 2 so as to face the power supply block 15.
[0019]
The L-shaped support member 14 supporting the power supply block 15 has a spring force. However, during transportation, the power supply block 15 and the current collecting plate 16 are separated from each other by vibration caused by unevenness of the road surface. The mounting position is adjusted so that no defect occurs.
[0020]
The current collector plate 16 is attached to the front end portion of the support plate 18 with bolts 17, and the rear end portion of the support plate 18 is attached to a fixed plate 19 below the portal pallet 2.
[0021]
As shown in FIG. 6, the current collector plate 16 has at least five electrode plates 20a, 20b, 20c, 20d, and 20e. The first and second electrode plates 20a and 20b are connected to the warning lamp 7, the electric heater 9 and the electric motor for opening and closing the electric hood, which have already been described through the terminal box 21 (see FIG. 3) provided on the portal pallet 2. (Not shown) or the like. The third electrode plate 20c is electrically connected to the right touch sensor 6c via the terminal box 21, and the fourth electrode plate 20d is connected to the left touch sensor via the terminal box 21. The fifth electrode plate 20e is electrically connected to 6d, and is used as a common electrode plate for the left and right touch sensors 6c and 6d.
[0022]
Accordingly, the first to fifth five electrode portions 22a, 22b, 22c, 22d, and 22e are also provided in the power feeding block 15 so as to correspond to the five electrode plates 20a, 20b, 20c, 20d, and 20e of the current collecting plate 16. Is provided.
[0023]
Accordingly, when the transport carriage 3 entering under the portal pallet 2 pushes up the pallet lifter 13 and lifts the portal pallet 2, the electrode portions 22 a, 22 b, 22 c, 22 d of the power supply block 15 attached to the pallet lifter 13. , 22e come into contact with the electrode plates 20a, 20b, 20c, 20d, 20e of the current collector plate 16 attached to the gate-type pallet 2, the alarm lamp 7 is turned on, and the touch sensor 6 functions.
[0024]
Then, when the portal pallet 2 is being transported by the transport carriage 3, if the right side touch sensor 6c is touched, the electrical signal is sent to the third and fifth electrode plates of the current collector plate 16 of the portal pallet 2. 20c and 20e and the third and fifth electrode portions 22c and 22e of the high-power block 15 of the transport carriage 3 are transmitted to a control device (not shown) provided in the transport carriage 3 to suddenly stop the transport carriage 3 .
Further, as shown in FIGS. 7 and 8, the portal pallet 2 is provided with a stock sensor 23.
[0025]
As shown in FIG. 8, the elongated stock shifter 24 of the stock sensor 23 is provided between a pair of bunches 25 and 25 on which cargo is placed. As shown in FIG. 9, the in-stock shifter 24 is pinned to one end of an arm 27 via a bracket 26, and the other end of the arm 27 is a shaft supported on the loading platform 4 of the portal pallet 2. 28 is fixed. As shown in FIG. 7, a coil spring 29 is bridged between the arm 27 and the loading platform 4 of the portal pallet so that the arm 27 is normally erected.
[0026]
As shown in FIG. 9, the second arm 30 is fixed to the shaft 28 while maintaining an angle θ with the arm 27, and a light shielding plate 31 is provided at the tip of the second arm 30.
[0027]
When the cargo is placed on the portal pallet 2, the arm 27 that supports the load shifter 24 against the spring force of the coil spring 29 rotates in the clockwise direction in FIG. 9, and at the same time, the second arm 30 is also the same. Rotate in the direction. As shown in FIG. 5, the light shielding plate 31 at the tip of the second arm rotates from the position indicated by the two-dot broken line to the position indicated by the solid line.
[0028]
Therefore, when the light beam of the optical sensor 32 of the conveyance carriage 3 that has entered under the portal pallet 2 is blocked by the light shielding plate 31, the control device mounted on the conveyance carriage 3 indicates that the cargo is on the portal pallet 2. (Not shown).
[0029]
【The invention's effect】
As described above, according to the present invention, since the feed block is provided on the lifter of the transport carriage and the current collector plate is provided on the portal pallet so as to face the feed block, the portal pallet is lifted by the lifter of the transport carriage. Sometimes, the power supply block of the transport carriage and the current collector plate of the portal pallet are electrically connected securely.
[0030]
Therefore, power can be supplied from the transport carriage to the portal pallet via the power supply block provided on the lifter of the transport carriage and the current collector plate provided on the portal pallet, and an electrical signal can be sent from the sensor provided on the portal pallet to the transport carriage. Can feedback.
[0031]
as a result,
▲ 1 ▼ Obstacle detection by the touch sensor provided on the portal pallet ▲ 2 ▼ Alarm light provided on the portal pallet ▲ 3 ▼ Opening and closing of the electric hood provided on the portal pallet ▲ 4 ▼ Thermal insulation inside the electric hood Is possible.
[Brief description of the drawings]
FIG. 1 is a side view of a cargo handling apparatus according to the present invention.
FIG. 2 is a cross-sectional view taken along the line AA of FIG.
3 is a cross-sectional view taken along the line BB in FIG.
4 is a cross-sectional view taken along the line CC of FIG.
FIG. 5 is an enlarged view of a portion indicated by reference sign D in FIG. 1;
FIG. 6 is a plan view of a current collector plate.
FIG. 7 is a side view of a stock sensor.
8 is a cross-sectional view taken along the line E-E in FIG. 7;
9 is an enlarged view of a portion indicated by reference sign F in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cargo conveyance apparatus 2 Portal pallet 3 Carriage cart 4 Loading platform 5 Leg 11 Car body 13 Lifter 15 Feeding block 16 Current collecting plate

Claims (3)

In a cargo handling apparatus comprising a portal pallet composed of a loading platform and legs, and a transport cart that lifts and conveys the portal pallet by a lifter provided in the vehicle body under the portal pallet. A power supply block is provided, and a current collector plate is provided on the portal pallet so as to face the power supply block. When the gate pallet is lifted by a lifter, the power supply block and the current collector plate are electrically connected. A cargo handling apparatus characterized by doing so. 2. The cargo handling apparatus according to claim 1, wherein a touch sensor is provided on a leg portion of the portal pallet, and the touch sensor and a current collector plate installed on the portal pallet are electrically connected. 2. The cargo handling apparatus according to claim 1, wherein a warning light is provided on the loading platform of the gate-type pallet and the warning light and a current collecting plate installed on the gate-type pallet are electrically connected.

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