JPS604112B2 - Boarding section structure in unmanned vehicle elevator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure of a boundary portion, that is, a guide portion, between the floor surface of an elevator car and the floor surface of a building in elevator equipment used for raising and lowering unmanned vehicles.

Unmanned vehicles such as unmanned guided transport vehicles are not only used within one floor, but may also be used for unmanned transportation between different floors by being loaded onto an elevator using unmanned guidance. In this case, if the accuracy of vertical stopping of the elevator is poor, a step will occur between the floor surface 2 of the elevator cage 1 and the floor surface 4 of the building 3, as shown in FIG.
A situation will finally arise in which the wheels 5 of the unmanned vehicle cannot overcome this step. Alternatively, a large torque drive source is required to overcome this difference. In addition,
FIG. 1 shows a state where the unmanned vehicle is at the limit of a step that it can overcome, and L is the horizontal distance between the corner to be overcome and the point of contact of the wheels with the floor surface. The present invention solves the above-mentioned conventional drawbacks and provides a structure for a cross section that can overcome a step with a smaller torque even if a step occurs between the floor of the elevator cage and the floor of the building. The purpose of this is to cut out the corners of the elevator cage floor and the building floor at the boundary between the two, and insert two holes into each corner.
One or more step portions are formed with a point or three or more points, and the step portions are formed between the upper corner portion and the wheel center when the wheel is in contact with two adjacent corner portions. The vehicle is characterized by being formed so that the horizontal distance between the corner and the wheel floor surface is not larger than the horizontal distance L between the corner and the wheel floor surface point, which is the limit of the step difference that can be overcome with the driving torque of the unmanned vehicle. be.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows a first embodiment of the present invention, in which corner portions at the boundary between the floor surface 2 of the elevator cage 1 and the floor surface 4 of the building 3 are cut out to form stepped portions 6 and 7. ing.

Note that the stepped portions 6 and 7 both have a depth a and a depth 1'.
It is designed to serve as two enemies, and is installed across the entire width of the elevator entrance. Suppose now that the elevator floor 2 stops lower than the building floor 4 by the maximum height difference that an unmanned vehicle can overcome (see Figure 2).

When the wheel passes through this boundary in this state, the wheel contacts the heel at point I and point B and first overcomes the step h in Fig. 2, then contacts at the corner point A and overcomes the step a.
This is how you overcome the whole difference. Therefore, the torque T = L x F (
This torque is for the conventional case, and is the torque required to get over a step in the condition shown in FIG. Note that F is the wheel load. ) can be overcome in two steps with smaller torque. In other words, the torque required to cross Qin at point B is T:1×F, and the torque required to cross Qin at point A is clearly greater than the above torque L×F because the wheel 5a' is lifted up. small. For example, if m=L, 1=1
If the depth a is determined to be '2L, then 1 x F = 1/2
L×F, so the torque is half that of the conventional case. Note that the above dimension m is desirably smaller than L in FIG.

This is because if m is larger than L, the wheels will fall below the floor surface at the stepped portion, which will have a disadvantageous effect on reducing the step. Regarding the depth a of the step, as shown in Fig. 3, the upper corner A is the maximum step that an unmanned vehicle can overcome (this is 1), the wheels 5a are in contact with the floor surface 2 of the elevator car, and at the upper corner, as shown by the two-dot chain line. It is necessary that the depth a from the building floor surface 4 of the intersection point B' with the elevator cage side end surface of the building 3 is shallower than that when the building 3 is assumed to be in a state of contact with point A.

The reason for this is that when the depth a of the step is greater than a, the wheel 5a directly contacts the upper corner A without contacting the lower corner B. This is because a situation may arise in which the user has to climb over a high level difference at once. Moreover, even if the wheel 5a runs onto the lower corner point B, the wheel 5a will rotate further and the wheel 5a will rotate 2 times as shown by the solid line.
When the wheel is in contact with corner parts A and B, if the depth a of the stepped part is greater than a, the horizontal distance between the upper corner part A and the wheel center corresponds to the limit step date. The horizontal distance between the corner part and the wheel floor contact point (that is, the horizontal distance between the corner part A and the contact point of the wheel 5a to the floor surface 2) is larger than L, and therefore, in order to get over the corner part A, This is because a torque greater than the limit torque L×F of the vehicle is required. The above example is a basic pattern, and the fourth example is a basic pattern.
The structure shown in FIGS. 5 and 5 can be used.

The stepped portions 8 and 9 in FIG. 4 are obtained by chamfering the lower corner B in FIG.
This is disadvantageous in terms of wear, so this was provided to avoid this. The stepped portions 10 and 11 in FIG. 5 are not only one step but a plurality of steps, and extend from corner B2 to corner A2.
Instead of overcoming Qin all at once, it was done in multiple steps to reduce the torque.

The illustrated embodiment has five saddles and therefore six corners, but the relationship between two adjacent corners is such that the wheels are located at the two corners. The horizontal distance between the upper corner and the center of the wheel in the contact state is the corner and
The horizontal distance between the wheel floor contact points is set not to be greater than L. As explained above, according to the present invention, both corners at the boundary between the floor of the elevator and the building floor are cut out to form a stepped portion, so the wheels are able to cross this step multiple times with a small torque. You can overcome it.

Therefore, even if the stopping accuracy of the elevator is somewhat poor, the unmanned vehicle can climb over this step and get on and off the elevator, and the transportation system using the unmanned vehicle can operate extremely smoothly. In addition, whereas conventionally, elevator stopping accuracy was generally required to be on the order of 1/2 shipboard, a stopping accuracy of, for example, 2,2 shipboard is permitted, making it possible to manufacture the elevator control system at a significantly lower cost.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the boundary between the elevator floor and the building floor showing an example of a substructure, FIG. 2 is a cross-sectional view of the same boundary showing an embodiment of the present invention, and FIG. The figure is an explanatory diagram regarding the depth a in FIG. 2, and FIGS. 4 and 5 are sectional views of the boundary portion, respectively, showing the second and third embodiments. 1... Elevator cage, 2, 4... Floor surface, 3... Building, 6, 7, 8, 9, 10, 11... Step section. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. Cutting out the corners of the elevator car floor and the building floor at the boundary between the two to form one or more stepped portions with two or more corner points at each corner. At the same time, the stepped portion is such that the horizontal distance between the upper corner and the center of the wheel when the wheel is in contact with two adjacent corner portions is the limit step that can be overcome by the driving torque of the unmanned vehicle. A boarding part structure in an elevator for an unmanned vehicle, characterized in that the horizontal distance between a corner part and a wheel floor contact point corresponding to H is formed so as not to be larger than L.