JPH0234808B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an article transportation trolley, which is described in the following section []
Regarding things that have the structure [ ].

[] The table lower frame is configured to be horizontally floating relative to the trolley body.

[] A driving elevator for a horizontal positioning member of the table bottom frame with respect to the floor (travel surface) is attached to the table bottom frame.

The features of this [ ] [ ] structure are as follows. This will be explained based on the conceptual diagram of FIG.

1 is a trolley body, 2 is a table lower frame, 3 is a loading table, 4 is a positioning member, 5 is a driving elevator thereof, 6 is a floor, 7 is a positioning member on the floor side, and 8 is a load.

The positioning member 4 is in a raised position when the trolley is traveling. After the trolley has arrived at the work station and before loading or unloading the load, the drive elevator 5 lowers the positioning member 4 and fits it into the positioning member 7 on the floor. The pair of positioning members 4 and 7 have a conical shape, one of which is convex and the other concave, and are positioned in the horizontal direction by a self-aligning action based on fitting.

During this positioning, it is the table lower frame 2 and the loading table 3 (including the load 8 during loading) that move horizontally together with the positioning member 4 and the drive elevator 5, and the trolley body 1 does not move. Not done. This is a feature of the table floating type.

That is, the weight ratio and absolute weight of the truck body 1 to the entire truck are quite large. The large weight of this cart body 1 is insulated (no weight is applied) from objects to be moved (table bottom frame, loading table, etc.) during floating, so (a) table bottom frame, loading table, etc. during positioning are insulated (no weight is applied). This has the advantage that horizontal movement of the table, etc. is smooth, and (b) highly accurate positioning is performed.

Now, the subject of the present invention is one of the modes of loading and unloading goods on the premise of an article transporting trolley having the above-mentioned configuration [ ] and [ ]. This is to prevent the cart from falling over, which is a concern if the forking method described in the next section [] is adopted.

[] The loading table is attached to the lower frame of the table so that it can move in and out in the lateral direction for forking operation [see imaginary line in Figure 1]. The lateral direction here refers not only to the width direction of the cart but also to any horizontal direction including the running direction.

When unloading a load to a station by forking or taking in a load at a station by forking, the position of the center of gravity of the entire weight of the truck including the load 8 changes significantly. When the loading table 3 is at its maximum protrusion, the overturning moment is maximum and the table is most unstable. If the amount of load is too large, the loading table 3, the table lower frame 2, etc. will tilt, and in some cases, the force will cause the trolley body 1 to fall.

In comparison, in a type of cart that does not adopt the table floating format and positions the cart while supporting the entire cart including the cart body 1, the resistance against the overturning moment during forking is
Stability is good because the entire weight of the truck, including the truck itself, is always working. However, the advantages (a) and (b) above cannot be obtained.

It is an object of the present invention to prevent the table floating type cart having the advantages (a) and (b) above from falling over, which is a concern when adopting the forking type.

A characteristic configuration of the article carrying trolley of the present invention is that the loading table is attached to the table lower frame so as to be freely retractable in the horizontal direction, and the table lower frame is movable in the horizontal direction and upwardly relative to the trolley body. A telescoping drive elevator is attached to the table bottom frame to lift and lower the positioning member that fits into the floor-side positioning member and positions the table bottom frame in the horizontal direction with respect to the floor. The driving elevator is configured to be able to extend freely with a stroke larger than the stroke required to fit the positioning member into the floor-side positioning member, and to be movable in the horizontal direction with respect to the truck body, An application mechanism is provided that lifts the trolley body from the floor and applies the weight of the trolley body to the table lower frame side as the drive elevator extends after both positioning members are fitted. be.
Note that the above-mentioned applying mechanism includes a type that pushes up the truck body from below and a type that lifts the truck body from above.

The effects of the above feature configuration are as follows.

That is, as the drive elevator extends, the positioning member on the cart side first fits into the positioning member on the floor side, thereby positioning the table lower frame with respect to the floor. During this positioning, the table lower frame rises and moves in the horizontal direction with respect to the trolley body, so positioning can be performed more smoothly than when the trolley body is also moved.

As the drive elevator extends after the above-mentioned positioning, the weight of the cart body is applied to the table lower frame side due to the operation of the application mechanism. Therefore,
When forking in this state, that is, when performing transfer work while moving the loading table horizontally in and out of the table lower frame, the weight of the entire trolley including the trolley body will resist the overturning moment. Stability is ensured.

Therefore, the effects of the present invention are as follows.

In other words, while having the advantage of positioning the table with respect to the floor while moving the table lower frame upward and horizontally relative to the trolley body, that is, while floating, it is possible to move the loading table while moving it in and out. During loading work, the weight of the trolley itself is used to stabilize the vehicle and prevent it from falling over.

Next, an embodiment of the present invention will be described based on FIGS. 2 and 3.

In these figures, 1 is the trolley body, 2 is the table lower frame, 3 is the loading table, 4 is the positioning member, 5 is the drive elevator (hydraulic cylinder, etc.),
6 is a floor, 7 is a positioning member on the floor side, and 8 is a load. Each part will be explained below.

The loading table 3 is attached to the table lower frame 2 so as to be freely retractable in the horizontal direction.
is configured to be able to rise freely and move freely in the horizontal direction with respect to the trolley body 1. Drive elevator 5
is attached to the table lower frame 2 and moves the positioning member 4 up and down by expanding and contracting, and furthermore, it extends with a stroke larger than the stroke required to fit the positioning member 4 into the positioning member 7 on the floor side. It is configured to be freely operable and movable in the horizontal direction with respect to the truck body 1. In addition, by fitting the positioning member 4 to the positioning member 7 on the floor side, the table lower frame 2 can be aligned with respect to the floor 6.
Positioning is performed in the horizontal direction.

Further, 9 is an operation for lifting the trolley body 1 from the floor 6 and applying the weight of the trolley body to the table lower frame side as the driving elevator 5 is extended after the positioning members 4 and 7 are fitted together. This is an application mechanism, and in this embodiment, it is of a type that pushes up the truck body 1 from below. That is, the driving elevator 5
The application mechanism 9 is constituted by a support 10 attached to the support body 10 and a receiver 11 attached to the truck main body 1 opposite directly above the support body 10.

The loading table 3 is attached to the table lower frame 2 via an intermediate sliding body 12 so as to be freely retractable in the lateral direction.

FIG. 2 shows that when the trolley arrives at the station and stops, the driving elevator 5 is operated to position the positioning member 4 with respect to the floor 6, and the positioning member 4 is moved to the positioning member 7.
It shows the state in which it is being lowered to fit into the

FIG. 3 shows that after the pair of positioning members 4 and 7 are fitted together by self-alignment, the driving elevator 5 is further extended, and as a result, the elevator 5, the table lower frame 2, the loading table 3, etc. are raised. , the support body 10 comes into contact with the receiver body 11 when it rises by a certain amount, and then the trolley body 1 is lifted up. Figure 3 also shows
A state is also shown in which, after the trolley body 1 is lifted and its weight is applied to the table lower frame 2, the loading table 3 is projected laterally together with the sliding body 12 and is forking.

FIG. 4 shows another embodiment. That is, the support body 11 of the truck body 1, the support body 13 attached to the drive elevator 5 facing directly above the support body 11, and the flexible rope such as a chain or wire that is stretched between the support body 13 and the support body 11. The strip 14 constitutes the application mechanism 9.

It is also conceivable to use a telescopic rod or a rod with a stopper passing through the support 13 instead of the flexible cable 14.

[Brief explanation of drawings]

Figure 1 is a conceptual diagram showing the prerequisite configuration of the present invention;
FIG. 3 is a conceptual diagram showing an embodiment of the present invention,
FIG. 4 is a conceptual diagram showing another embodiment of the present invention. 1... Cart body, 2... Table bottom frame, 3...
Loading table, 4... Positioning member, 5... Drive elevator, 6... Floor, 7... Floor side positioning member, 9
...Applying mechanism.

Claims (1)

[Claims] 1 A loading table 3 is attached to the table lower frame 2 so as to be able to move in and out laterally, and
is configured to be able to rise freely and move freely in the horizontal direction with respect to the trolley body 1, and the table bottom frame 2 is fitted with a floor-side positioning member 7 to adjust the horizontal direction of the table bottom frame 2 relative to the floor 6. A telescopic drive elevator 5 is attached to raise and lower the positioning member 4 for positioning, and the drive elevator 5 has a stroke larger than the stroke required to fit the positioning member 4 into the floor-side positioning member 7. It is configured to be able to extend freely with a stroke of , an article transporting trolley provided with an application mechanism 9 for lifting the trolley main body 1 from the floor 6 and applying the weight of the trolley main body to the table lower frame side.