JPH02215621A - Baglike load loading method in baglike load loader for dolly - Google Patents

Abstract

PURPOSE:To keep the optimum loading height by lifting up a feeding portion while the distance up to the upper surface of a baglike load by a distance sensor, stopping lifting operation when it reaches the height equal to a designated distance, and moving the feeding portion in the horizontal direction to feed the next baglike load. CONSTITUTION:A distance sensor 20 such as an ultrasonic sensor or the like is installed on an upper portion of a feeding portion for a baglike load, which is capable of freely moving back and forth, right and left and in the vertical direction for a dolly, and the distance between the distance sensor 20 and the lower end portion of a feeding gate 16 is previously stored in a control portion. Thus, after the feeding portion 15 is positioned at one end portion of a pallet to feed a baglike load, the feeding portion is lifted up while the distance up to the upper surface of the baglike load is detected by the distance sensor 20, and lifting operation is stopped when the feeding portion reaches the height equal to the previously stored distance. After that, the feeding portion is moved horizontally to feed the next baglike load to an adjacent position. Accordingly, even if the thickness of the baglike load changes, the feeding height corresponding to the thickness can be kept.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a loading method for a loading/unloading device for a transport vehicle that automatically stacks loads in multiple stages on the platform of the transport vehicle.

[Prior art] A method for automatically loading bags of cement, grain, etc. into multiple stacks on the loading platform of a transport vehicle has been put into practical use since 1972.
There is a method, as disclosed in Japanese Patent No. 48635, in which a loading section is movable vertically, horizontally, and longitudinally with respect to the loading platform of a carrier, and a loading device is used to sequentially load loads onto the loading platform.

In the general loading method using these loading and unloading devices, the cargo is loaded in sequence from the first row next to the driver's cab side by side, and when the first row is finished, the second and third rows are stacked. When the first row is loaded, the loading section is moved back, and the second row is loaded in the same manner.
Loading is carried out sequentially to the third row, the third row, and the rear of the loading platform.

To compensate for the vertical movement of the dispensing section at this time, the thickness of the load may change depending on the amount of air that enters during bagging, the specific gravity of the contents, etc., so please allow some margin for the typical value of the thickness of the load. The value is stored in the control unit as the vertical movement pitch,
Vertical movement is performed based on this.

[Problems to be Solved by the Invention] However, if the vertical movement pitch is set to leave a sufficient margin in the above j. This makes it impossible to load and unload the cargo, and requires the assistance of workers, making it impossible to save on manpower.

Therefore, in view of the above points, the present invention aims to correct the vertical movement pitch of the unloading section according to the thickness of the loaded material, and to maintain an appropriate loading height at all times. It proposes a loading method.

[Means for Solving the Problems] In order to achieve the above object, the present invention makes the loading unloading part movable in the front, rear, left, right and up and down directions with respect to the transport vehicle,
In a loading/unloading device for a transport vehicle in which the dispensing gate faces downward and opens on both sides, a distance sensor is installed at the top of the dispensing part, and the distance sensor and the lower end position of the dispensing gate are determined when the dispensing gate is opened. The distance to the top of the load is stored in advance in the control unit, and when the first load of that stage is placed on one end of the loading platform and the payout gate is opened to payout, the distance to the top of the load is detected by the distance sensor and the load is moved to the payout unit. When the distance to the top of the loading surface reaches a height equal to the memorized distance, the lifting is stopped, and then the dispensing section is moved horizontally to the adjacent dispensing position and the next loading is started. The present invention provides a loading method for a loading/unloading device for a transport vehicle, which is characterized in that the loading/unloading device is adapted to be unloaded.

[Function] In the loading method of the loading/unloading device for a transport vehicle according to the present invention, the distance sensor attached to the upper part of the loading dispensing part and the lower end of the dispensing gate in the open state of the dispensing gate of the dispensing part. The distance to the top of the load is stored in advance in the control unit, and when the first load of that stage is placed on one end of the loading platform and the payout gate is opened to payout, the distance to the top of the load is detected by the distance sensor and the load is moved to the payout unit. When the distance to the top of the loading surface reaches a height equal to the memorized distance, the lifting is stopped, and then the dispensing section is moved horizontally to the adjacent dispensing position and the next loading is started. Since the bag is discharged, even if the thickness of the load changes due to the amount of air introduced during bagging, the specific gravity of the contents, etc., it is possible to always maintain an appropriate loading height corresponding to the thickness of the load.

[Example] Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows an example of a loading/unloading device for a transport vehicle, and its outline will first be explained. 1 shows a loading device that automatically loads cement, grain, etc. in bags onto the platform of a loaded transport vehicle in multiple stages, and a lifting body 3 that can be raised and lowered is mounted on a support 2 of the loading loading device xi. It is arranged. The elevating body 3 has a roller 4 disposed on the elevating body 3 along a guide rail 5 fixed to a support 2, and one end of a chain 7, which is rotated, is hooked onto a sprocket 6 disposed at the upper end of the guide rail 5. The other end of the elevating body 3 is attached to a weight 8, and the elevating body 3 can be raised and lowered by rotating a drive motor 9 in forward and reverse directions.

Further, a traveling rail 10 is arranged on the elevating body 3, and a traveling body 12 having wheels 11 is mounted on the traveling rail 10 so as to be freely movable. The traveling body 12 is equipped with a drive motor 14 having a gear that meshes with a rack 13 fixed to the elevating body 3, and is movable laterally by rotating the drive motor 14 forward or backward. Reference numeral 15 indicates a dispensing section for discharging loads onto the loading platform of a transport vehicle, and dispensing gates 16 that open and close symmetrically downward are provided on both sides of the lower end of the dispensing section 15. One example part is pivotally mounted so as to be swingable, and is supported by a link 19 attached to the tip of the piston rod 18 of the cylinder 17, and as the piston rod 18 expands, the pair of payout gates 1G move downward to both sides. Opens and discharges the load.

An ultrasonic sensor 20 for detecting the distance to the object to be measured is fixed to the upper part of the dispensing part 15 by a fixing fitting 21. The ultrasonic sensor 20 is connected to a control section 22, which includes a CPU 23 and a storage section 24, and controls the ultrasonic waves emitted from the ultrasonic sensor 20 until they hit the object to be measured and are reflected. Measure the time required x
The distance between the object to be measured and the ultrasonic sensor 20 is measured by calculating the speed of sound/2 by the CPU 23.

Further, a setting input section 25 is connected to the CPU 23 to input various data such as the distance between the ultrasonic sensor 20 and the object to be measured in advance. A control unit 26 that controls the operation of the payout section 15 is also connected to the CPU 23. In this embodiment, the ultrasonic sensor+! is used to measure the distance to the object to be measured. Although t-20 is used, other methods may be used as long as they can measure distance.

The loading chute section 27 is integrated with the discharging section 15 and fixed to the traveling body 12, and moves horizontally and vertically together with the traveling body 12. A conveyor 28 is disposed in the shade section 27 to smoothly feed the load to the dispensing section 15.

A conveyor 29 that transports and supplies the load to the chute section 27
has an upper end fixed to the traveling body 12 with a pin and a lower end supported so as to be slidable and rotatable, and as the elevating body 3 rises and lowers, the lower end slides and goes up and down together with the elevating body 3. The upper end portion of the conveyor 29 is moved laterally along with the lateral movement of the conveyor 29.
The upper end of the shade part 27 is arranged so as to constantly face the insertion part of the shade part 27.

Reference numeral 30 indicates a transport vehicle moving device for moving the transport vehicle back and forth; the rear wheels of the transport vehicle are placed on a moving body 31-to, and a chain 34 is hooked and rotated around sprockets 32 and 33 arranged at the front and rear of 5. A moving body 31 is attached to the chain 34, and a drive motor 35 is driven to move the vehicle back and forth.

As described above, the loading/unloading device l has the loading unloading section 15.
The dispensing unit 15 can be freely moved back and forth relative to the loading platform by making it movable in the horizontal and vertical directions with respect to the loading platform of the carrier, and by making the loading vehicle movable back and forth by the loading vehicle moving device 30. be.

Next, a method of loading bags onto the platform of a carrier using the bag loading device as described above will be explained with reference to FIGS. 3 to 6.

First, as an initial operation before starting the operation of loading cargo onto the platform of a transport vehicle, as shown in FIG. The margin distance 1 required for the dispensing unit 15 to move horizontally without any hindrance in the distance LL to the lower end of
The distance ML obtained by adding 1tL2 is stored in the storage unit 24.

When unloading a load from the load unloading unit 15 of the loading/unloading device and loading it onto the platform of a transport vehicle, the stacks are stacked sequentially from one horizontal row on the driver's cab side and loaded toward the rear of the platform.
FIGS. 4 to 6 are diagrams showing the loading state.

First, how to place the load is as shown in Figure 4.
5 is lowered and positioned close to the surface of the loading platform at one end of the loading platform, and as shown in Fig. 5, the loading gate 16 is opened and closed to discharge one bag, and then the loading gate 16 is raised and moved laterally while closing the loading gate. 16 are sequentially opened and closed to take out one bag at a time and place them on the loading platform while placing them adjacent to each other.

At this time, when the dispensing part 15 is lowered toward the loading platform surface, as shown in FIG. The control unit 26 is lowered while calculating and measuring the distance to the surface by the CPU 23, and when the measured distance becomes equal to the distance 111L preset and stored in the storage unit 24, the control unit 26
By controlling and stopping the dispensing section 15, the dispensing section 15 can be positioned at an appropriate height relative to the loading surface.

In addition, the numbers written on the loading in the diagram indicate the loading order, and the following are No., 1% No., 2, No., 3, etc.
It is expressed as loading.

As shown in the imaginary line in FIG.
If you want to move the load to a higher position in the empty space adjacent to the loaded load, open payout game 1-16 and press No.
When the load No. 1 is dispensed, the dispensing unit +5 is raised while detecting the distance between the top surface of the load No. 1 and the ultrasonic sensor 20, and the distance to the top surface of the load is the distance set and stored in the storage section 24. It stops rising when it reaches a height equal to
The payout gate 16 is closed, and then the payout section 15 is moved horizontally to the -F position of the empty space adjacent to No. 1 and No.1. Then, the unloading gel 16 is opened to unload the loads No. 2, and while the unloading section 15 is subsequently moved horizontally, the loads are sequentially unloaded and loaded into the adjacent empty spaces. In this way, since the payout height of this stage is determined in consideration of the thickness of the No. and L loads, an appropriate payout height can be achieved.

Then, as shown in FIG. 6, the dispensing part 15 reaches the other end of the loading platform, and the result is No. After discharging the load of 5, continue with No.
When loading No. 6 is taken out and stacked on No. 5 loading,
While emitting ultrasonic waves from the ultrasonic sensor 20 again and measuring the distance between the loaded top surface of N006 and the ultrasonic sensor 20, the dispensing unit 15 is raised, and the distance to the loaded top surface is recorded in the storage unit 2.
When it reaches a height equal to the distance set and memorized in 4, it stops rising, closes the payout gate 1G, then turns back the payout part 15 and moves horizontally, and while maintaining that height, sequentially No. 7, No. 7, etc. No. 8 loads are being loaded.

In this way, the load is discharged at one end of the loading platform, and the discharge section 15
When lifting the load, the distance between the top surface of the load and the ultrasonic sensor 20 is detected, and the distance 1t! is set and stored in the storage unit 24! When it reaches a height equal to L, it stops rising and then moves horizontally, so that it is possible to load the load while always positioning the unloading section 15 at an appropriate height considering the thickness of the load. be.

[Effects of the Invention] As described above, in the loading method of the loading/unloading device for a transport vehicle according to the present invention, after the loading dispensing part 15 is positioned at one end of the loading platform and the loading is being discharged, the unloading part The ultrasonic sensor 20 attached to the upper part of the load is raised while detecting the distance between the top surface of the load and the ultrasonic sensor 20, and when the detected distance reaches a height equal to a preset and memorized distance, the load is lifted. It stops and then moves horizontally to load the load on that stage, so even if the thickness of the load changes due to the amount of air that enters during bagging, the specific gravity of the contents, etc., the unloading height can be adjusted to match the thickness. Loads can be discharged while maintaining the load, and loads can be stacked in a stable posture at all times, eliminating the need for assistance from workers and making it possible to reduce the burden on workers.

Moreover, the distance that the dispensing part 15 is raised is only required to be the minimum distance depending on the thickness of the loaded material, and the loading time can also be shortened.

[Brief explanation of the drawing]

FIG. 1 shows a loading and unloading device for a transport vehicle according to the present invention.
FIG. 2 is a left side view of FIG. 1, FIG. 3 is an enlarged partially cutaway view of the dispensing section, and FIGS. 4 to 6 are explanatory diagrams showing the state of loading. .

Claims (1)

[Claims] In a loading/unloading device for a transport vehicle in which the unloading part of the load is movable in the front, back, left, right, and up and down directions with respect to the transport vehicle, and the unloading gate faces downward and opens on both sides, a distance sensor is installed at the top of the unloading part. The distance L between the distance sensor and the lower end position of the payout gate when installed and the payout gate is in the open state is stored in advance in the control unit, and the first load of that stage is placed on one end of the loading platform and the payout gate is opened. When dispensing the load, the dispensing unit is raised while detecting the distance to the top surface of the load using a distance sensor, and when the distance to the top surface of the load reaches a height equal to the memorized distance L, the dispensing unit stops rising, and then the dispensing unit is disbursed. 1. A method for loading a load in a loading/unloading device for a transport vehicle, characterized in that the loader is moved horizontally to an adjacent unloading position to unload the next load.