JPH0235695Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a truck loading platform fixing device for transferring cargo onto the loading platform of a truck.

BACKGROUND TECHNOLOGY When a load sent out from a conveyor is transferred to a truck or the like, for example, the load is transferred from the conveyor to a traverser that moves on a rail perpendicular to the conveyor. Then, the traverser is driven to a standby position of the truck, and the cargo is transferred from the traverser to the loading platform of the truck.

Problems to be solved by the invention In such cases, the loading surface of the traverser is movable in the vertical direction, and the loading surface of the traverser is made to be movable in the vertical direction so that the loading surface with the carry-out conveyor and the loading surface with the loading platform of the truck are aligned. It's getting old.

The conveyor is in a fixed position, and once the load transfer surfaces are aligned, the transfer surfaces will not shift as the load progresses, but when transferring from the traverser to the truck bed, As the load is transferred, the weight increases and the loading platform of the truck lowers.
In other words, even if the loading surface of the truck and the loading surface of the traverser are adjusted to be on the same plane when the truck is empty, as the cargo is transferred, differences will arise between the loading surfaces, which may hinder the transfer of cargo. It will happen.

As a device to solve the above-mentioned problem, a device is known in which a truck is equipped with a jack at the bottom of the truck bed that allows the legs to extend toward the ground, and when a load is being transferred, the legs are pushed onto the ground by the operation of the jack and the truck bed is fixed in position. be. However, it is expensive to provide the above-mentioned jack for each truck, and the structure becomes complicated.

The present invention solves the above problems and provides a cargo platform fixing device that is inexpensive and has a simple structure.

Means for Solving the Problem The truck loading platform fixing device according to the present invention includes a stopper that can come into contact with an auxiliary bumper fixed to the truck loading platform when the truck approaches the load transfer station, and a stopper that can move up and down. The present invention also includes a fixing member for supporting the auxiliary bumper from below, a driving means for moving the fixing member up and down, a plurality of proximity switches, and a height control means for controlling the driving means.

The plurality of proximity switches are arranged in the height direction of the stopper, and at least one of the proximity switches detects the approach of the auxiliary bumper. Further, the height control means is for controlling the drive means so that the fixing member comes into contact with the auxiliary bumper based on the on/off state of each proximity switch.

Function: When transferring a load to a truck, the auxiliary bumper comes into contact with the stopper. At that time, a proximity switch installed on the contact surface of the stopper is turned on, and the fixing member rises to support the truck bed from below. The amount of rise of the fixing member is controlled by the operation of the proximity switch that is sensing the auxiliary bumper among the plurality of proximity switches. The position of the truck loading platform is fixed at a fixed position without being lowered by the load, and the loading surface on the truck side does not change.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In Fig. 4, baggage conveyors 1a to 1f
are arranged in parallel, and a traverser 4 is placed on rails 3, 3 laid in a direction orthogonal to the conveyance direction 2 of the cargo along the ends of the conveyors 1a to 1f, so as to be able to move left and right via wheels. . On the traverser 4, a loading table 5 on which the baggage on the conveyor is placed is installed so as to be movable up and down in the height direction of the traverser. An arm is provided to push out the cargo onto the loading platform No. 6. One location along the running rails 3, 3 of the traverser 4 is used as a load transfer station S to the truck 6. Track 6 above
The height of the loading platform and the height of the loading surface of the conveyors 1a to 1f are generally different, and therefore,
The loading platform 5 inside the traverser 4 moves up and down to absorb the difference in height between the two.

In Fig. 1, below the loading platform of truck 6,
Auxiliary bumper 7 is fixed. The bumper 7
has a contact surface 7a at a position where it can come into contact with a stopper 8 on the ground side, which will be described later, and a bottom surface 7b at a position where it can come into contact with a fixing member 9, which will be described later.

On the other hand, a support member 10 is fixed to the ground at the cargo transfer station on the ground side, and a stopper 8 is fixed to the support member 10. As shown in FIG. 3, a plurality of proximity switches 11a to 11e are provided on the contact surface 8a of the stopper 8 in series in the vertical direction. The proximity switch is embedded in a hole 12 formed in the stopper 8 so as not to come into direct contact with the auxiliary bumper 7.

Furthermore, screw jacks 13 are installed on the ground side at positions corresponding to the respective auxiliary bumpers 7, and the fixing member 9 of the jacks 13 is connected to a motor 14 by a gear 15, a belt 16, a gear 17, and a shaft 18. There is. Therefore, the fixed member 9 can be moved up and down in the vertical direction by the operation of the motor 14. Note that the motor 14 is a motor that can be rotated in forward and reverse directions.

Next, the operation of the above device will be explained. In Figure 2, truck 6 that reached the cargo transfer station
in the direction of arrow 19, the contact surface 7a of the auxiliary bumper 7
When the truck backs up until it contacts the stopper 8, the proximity switches 11a to 11e sense this and notify the operator that the truck has come to the normal position by a display means such as a buzzer or lamp lighting. The truck operator applies the foot brake and handbrake to hold the truck in place. Note that the display means is activated when at least one of the plurality of proximity switches is sensed.

Furthermore, the detection of the proximity switches 11a to 11e activates the motor 14, and the fixing member 9 of the screw jack 13 rises, and when the bottom surface 7b of the auxiliary bumper 7 and the upper end surface of the fixing member 9 come into contact, the fixing member 9 is moved upward. The member 9 stops rising. That is, among the plurality of proximity switches 11a to 11e, the switch that senses the approach of the auxiliary bumper 7 changes depending on the height of the bumper, and controls the rotation speed of the motor 14 based on this change. In the state shown in FIG. 3, the upper proximity switches 11a to 11
c is turned on, and the lower proximity switch 11d,1
1e is off, and it is detected that the bottom surface 7b of the auxiliary bumper 7 is in the position of the third proximity switch 11c from the top. The abutting member 9 comes into contact with the bottom surface 7b of the auxiliary bumper 7, and the preparation for carrying in the load is completed with the expansion and contraction of the fixing member 9 locked.

The traverser 4 receives the load P from the load transfer conveyor 1c onto the loading table 5, and while traveling to the load receiving position of the truck 6, changes the height of the loading surface _L1 of the loading platform 5 to the truck side loading surface _L2. At the same level, the mounting table 5 is raised and lowered so that the mounting surface _L1 is slightly higher than the transfer surface _L2 . Incidentally, the mounting table 5 is raised and lowered by known means such as a fluid cylinder or a chain.

The load P on the traverser 4 can be carried into the truck 6 by, for example, a pusher 20 provided at the transfer station, or by a pusher arm provided on the traverser 4, as shown in FIG. The cargo transferred to the truck is stacked in an orderly manner by a worker.

At this time, as the cargo is transferred to the truck bed, the load W applied to the bed increases, but since the bottom surface 7b of the auxiliary bumper 7 on the bottom of the bed is supported by the fixing member 9, the bed will not descend. do not have.

Therefore, the heights of the load transfer surface _L2 on the truck side and the load surface _L1 on the traverser 4 are always constant, and the height of the lifting platform changes each time the traverser moves between the truck and the conveyor. There is no need to make fine adjustments, and by simply moving the loading table 5 to the initially set position, the load can be transferred immediately after arriving at the station.

Effects of the invention As described above, in the present invention, the fixing member provided on the ground side of the cargo transfer station is brought into contact with the auxiliary bumper on the truck bed side from below to prevent the cargo bed from lowering when transferring cargo. Therefore, compared to a structure in which a jack or the like is provided on the truck bed, the structure is extremely simple and can be implemented at low cost. In addition, the proximity switch detects the approach and height of the auxiliary bumper and raises the fixing member to come into contact with the auxiliary bumper, so even if the truck has a different loading platform height, the auxiliary bumper will The fixing members can be brought into reliable contact with each other, so that regardless of the height of the loading platform, cargo can be transferred in a stable manner at all times. Furthermore, since the stopper is brought into contact with the auxiliary bumper on the loading platform side when the truck approaches the load transfer station, the truck can be reliably positioned at the load transfer station.

[Brief explanation of the drawing]

Figures 1 to 3 are views showing an embodiment of the device of the present invention, where Figure 1 is a perspective view, Figure 2 is a front view, and Figure 3 is a perspective view.
The figure is a sectional view showing the stopper and proximity switch.
FIG. 4 is a layout diagram showing an example of a baggage transfer system. 7... Auxiliary bumper, 8... Stopper, 8a...
...Abutting surface, 9...Fixing member, 11a to 11e...
Proximity switch.

Claims (1)

[Scope of Claim for Utility Model Registration] A stopper that can come into contact with an auxiliary bumper fixed to the truck bed when the truck approaches the cargo transfer station, and a stopper that is movable up and down and supports the auxiliary bumper from below. a fixing member for moving the fixing member up and down; a plurality of proximity switches disposed in parallel with the stopper in the height direction, at least one of which detects the approach of the auxiliary bumper; A truck bed fixing device comprising: height control means for controlling the driving means so that the fixing member comes into contact with the auxiliary bumper based on the on/off state of a proximity switch.