JPS605491B2 - Load receiving device with overload and eccentric load detection mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is applicable to cases where the weight of the supplied load exceeds a certain level or where the center of gravity is eccentric with respect to the left-right direction.
The object of the present invention is to provide a cargo receiving device with an overload and eccentric load detection mechanism that can automatically prevent delivery onto a next-stage conveyor.

Preferred embodiments of the present invention will be described below based on illustrative drawings. In FIG. 1, 1 is a cargo receiving device according to the present invention, and 2
is a free roller conveyor that takes over the cargo 4 sent out from the cargo receiving device 1 in the direction of the arrow 3.

As shown in FIGS. 2 and 3, the cargo receiving device 1 includes a movable platform 7 supported by a frame 5 of a free roller conveyor 2 on a horizontal machine shaft 6 so as to be vertically swingable, and a movable platform 7 supported by the movable platform 7. It is equipped with a loading platform 8. This load receiving platform 8 is of a free-low-flow conveyor type that is equipped with a plurality of free rollers 9 that support the load 4 in a state where the load 4 can be sent out in the direction of the arrow 3, but is not limited thereto. 10
is a side frame for positioning the load 4, and only the side in the delivery direction 3 is open.

Reference numerals 11 and 12 denote support means for the loading platform 8, and two shafts 14 and 15 are installed parallel to the sending direction 3 between a pair of front and rear bearing plates 13 erected on the movable platform 7; A pair of front and rear supported plates 16 protruding from the lower portions of both front and rear ends, support shafts 19 and 20 respectively carried from rotating bodies 17 and 18 pivoted on the respective shafts 14 and 15, and both of the rotating bodies 17, Weights 23 are attached to bell support villages 21 and 22, which are installed in the opposite direction from 18 to the support punches 19 and 20, respectively, so that their positions can be changed and fixed at will.
, 24, heavy key rests 25, 26 provided on the movable platform 7 to receive these respective weights 23, 24, and stoppers erected on the movable platform T to limit the left and right seesaw movement of the cargo receiving platform 8. 27 and 28.

The supported plate 16 is formed with notched grooves 29 and 30 in which the shafts 14 and 15 play from below. The notched groove 30, in which the shaft 15 plays, is formed in one shaft 14.
It is formed in an arc shape with the center at . Stopper 27
7 28 consists of a bolt whose height is adjustable.
Further, the two shaft blades 4 and the turtle 5 are arranged close to each other below the central part in the left and right direction of the loading platform 8, and the free ends of the support punches 19 and 20 are connected to height-adjustable bolts 31 and 32. Both ends of the cargo receiving platform 8 in the left and right middle direction are supported through the support plate 8. In Figure 2,
Is 33 the movable platform? It is a supporting means for supporting with a constant supporting force, and includes a bell support village 34 installed below the free roller conveyor 2 from the movable platform 7, a wheel weight 35 iron-coupled to this in a fixed position adjustable manner, and a wheel weight. and a height-adjustable stopper 36 that restricts the lowering limit position of 35.

Although the upper limit of the weight 35 is regulated by the frame of the free-roof conveyor 2, a stopper may be provided separately. Blind? 32 and means of support 3
3, the weight lowering limit stopper river 36 is defined as the weight lowering limit stopper river 36 when the load receiving platform 8 is in a horizontal state and the load support surface and the flap 1 are
” - is adjusted so that it is located at a constant height so that it is flush with the load supporting surface of the roller conveyor 2, and as shown in Figures 1 and 2.
As shown in the figure, at both left and right ends of the load receiving platform 8 side of the free roller conveyor 2, there are "cargo delivery stoppers 37" at a height slightly lower than the load support surface of the free roller conveyor 2.
38 is attached.

These two stoppers can also be continuously integrated into one stopper. Next, to explain how to use and function, a load of a predetermined size that can fit perfectly within the side frame 10 is placed at a predetermined position surrounded by the side frame 10 on the cargo receiving platform 8. For example, when the weight is 50k9, the weight is 35
Assuming that the weight and position of the car key 35 are set so as to balance with Since the load supporting surface of the free-roof conveyor 2 and the load supporting surface of the load receiving platform 8 remain flush with each other, the load 4 can be moved without being disturbed by the stoppers 37 and 38.
can be pushed onto the free roller conveyor 2, but if the load 4 is overloaded with 50k9 or more, the load receiving platform 8
together with the movable table 7 overcomes the gravity of the weight 35 and rotates downward to the limit position as shown by the imaginary line in FIG.

Therefore, even if the load supporting surface of the load receiving platform 8 is lowered than the upper end of the stoppers 37 and 38 and an attempt is made to push out the L load 4, the load 4 is assisted by the stoppers 37 and 38 and the free roller conveyor 2
Unable to send load 4 to. Note that an alarm lamp or a buzzer that is activated by detecting the descent of the movable base 7 may also be provided. In addition, as shown in FIG. 3, if the weight 0 of a load 4 of a predetermined size placed on a predetermined position on the loading platform 8 is not centered within a certain range in the left and right direction, for example, if the weight 0 is not centered within a certain range from both the left and right ends of the load 4, The difference in load FLF2 at separate positions is 10k.
9 or less, the weight and position of the wheel weights 23 and 24 and the weights of the wheels are adjusted so that the loading platform 8 does not rotate counterclockwise around the axle 4 or clockwise around the bag 15. 4
? Assuming that the position of army S is set, "If the unbalanced load of this load 4 is within the above tolerance range, the load receiving platform 8 is in a horizontal state flush with the load supporting surface of the free roller conveyor 2. Therefore, the load 4 on the load receiving platform 8 can be pushed out onto the free-roof conveyor 2 without being obstructed by the stopper 37738. However, if the unbalanced load of the load 4 exceeds the above tolerance range, 1 than the load FI
If the weight is 0 kg or more, the L loading platform 8 also pushes down the support village 20 against the gravity of the car weight 24 and moves the third wheel around the shaft 15.
As shown by the imaginary line in the figure, it is rotated clockwise and tilted, so that one end of the fully supported surface of the loading platform 8 is lowered from the upper end of the stopper 38 corresponding to the lower side of this inclination. Therefore, even if an attempt is made to push out the load 4 on the loading platform 8, one end of the load 4 gets caught by the stopper 38' and cannot be sent onto the free roller conveyor 2. Note that when the loading platform 8 rotates clockwise around the shaft 15, the supported plate 16 moves up relative to the shaft 14 due to the presence of the notch groove 29, and the support punch 19 and wheel weight 23 do not move. If the load FI is 10k9 or more heavier than the load F2, contrary to the above, the loading platform 8 will push down the support village 19 against the gravity of the weight 23 while supporting the shaft 1.
4 in the counterclockwise direction, and the stopper 37 prevents the load 4 from being pushed out.

An alarm lamp or buzzer which is activated by detecting the rotation of the support punches 19, 20 may also be used. As is clear from the above actions, the free-low conveyor is operated only when the load 4 stacked on the loading platform 8 does not exceed the specified load and the unbalanced load in the left and right direction is within the permissible range. As shown in FIG. 1, the load 4 can be pushed out onto the conveyor 2 manually or by a feeder, but as shown in FIG. is configured so that it is exposed outwardly from the free-roof conveyor 2, and a pull-in roller 40 is inserted under the exposed bottom of the bridge 4, and one end of the load 4 is slightly lifted by the rollers 40, and the load 4 is lifted slightly. Rotation of the rollers 40 allows the load 4 to be drawn onto the driven lo-fu conveyor following the rollers 401.

This retracting low-fu 40 and the driving low-fu conveyor following it are installed on a movable cart so as to be able to rise and fall freely, and are used for carrying the load 4 to each layer of the shelf (the opposite action to the above-mentioned retracting action) or carrying it out from the shelf. However, in this way, the bottom of one end of the full 4 is slightly lifted with the retracting roller 40, and the roller 4 is removed.
In an automatic warehouse using a load transfer device that pulls the load 4 onto a conveyor from a 0' twist, an overload or an extremely unbalanced load on the load 4 may impede the transfer of the load. Therefore, especially when the above-mentioned concerns exist, one solution is to install the device of the present invention in the line for supplying cargo to such an automated warehouse. - The device of the present invention can be implemented and used as described above, and can be applied to the next stage of a load where the overload is full or the unbalanced load in the left-right middle direction perpendicular to the feeding direction exceeds the permissible range. By automatically preventing the cargo from being sent to the next stage, it is possible to ensure the safety of subsequent cargo handling operations.

Note that although the fulcrum of the seesaw movement of the loading platform 8 is divided into an axis serving as the center of clockwise movement and an axis serving as the center of counterclockwise movement, it is possible to support the loading platform 8 with one shaft, It may be configured to rotate in any direction using that one shaft as a common fulcrum.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an example of use of a cargo receiving device according to an embodiment of the present invention, Fig. 2 is a longitudinal sectional side view of the same, and Fig. 3 is a longitudinal sectional front view of the same. Load receiving device, 2...Free low-flow conveyor, 4...Load, 6...Movable platform support shaft, 7...
・Vertically movable platform, 8... Loading platform, 11, 12...
Loading platform support means L I9, 20...Support village, 219 2
2... Weight support village, 23, 24... Military weight, 25, 26...
...Children's bell pedestal "27, 28... Loading platform lowering limit stopper, 33... Movable platform support means, 34... Children's weight support village, 35... Car weight, 36... Weight lowering limiter Stopper. Figure 1 Figure 3 Figure 2

Claims (1)

[Claims] 1. A loading platform for supporting and sending out loads is supported on a movable table that can be moved up and down, so that it can freely see-saw vertically in the horizontal width direction perpendicular to the loading direction, and both ends of the loading platform in the horizontal width direction are a pair of support means for holding the load receiving platform horizontally by supporting each with the same supporting force, and supporting the movable platform at a certain level so as to descend together with the movable platform only when the load receiving platform receives a load of a certain level or more. support means for supporting the load by force, and the load is further disposed adjacent to both left and right ends of the load sending end of the load receiving platform, and the load is sent out at a height that does not protrude beyond the load supporting surface of the load receiving platform which is in a horizontal state at a constant height. A cargo receiving device with an overload and eccentric load detection mechanism characterized by a stopper.