JPH0710280U - Positioning device for moving body - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a positioning device for a moving body, such as an elevator in a multi-storey parking lot, which can position a moving body that reciprocates along a predetermined path with high accuracy without causing problems of strength and malfunction. . [Structure] The U-shaped photoelectric switches 1 and 2 provided in series on the end surface 5a of the elevator 5 and the rectangular dog 4 fixed to the elevator pillar 3 are provided. Is a little shorter than the length a of the dog 4. Therefore, the light A output from the light projectors 1a and 2a is generated only when the elevator 5 moves up and down and is occupied at the same position.
B is blocked at the upper end and the lower end of the dog 4, and a detection signal is output from both the photoelectric switches 1 and 2. Therefore, the elevator 5 is stopped based on both detection signals at this time or the detection signal of the photoelectric switch occupying the upstream side in the moving direction of the elevator 5 of the photoelectric switches 1 and 2, so that the elevator 5 is highly accurate. Are to be positioned.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a positioning device for a moving body that reciprocates along a predetermined path, and is particularly useful when applied to a positioning device for an elevator in a multi-storey parking lot.

[0002]

[Prior art]

 In a multi-storey parking lot, a positioning device for the elevator is provided in order to stop an elevator that mounts a vehicle and moves up and down in the multi-storey parking lot on the parking floor. FIG. 2 is a perspective view of a positioning device for an elevator according to the related art. As shown in the figure, the positioning device of the elevator includes a photoelectric switch 11 and a dog 4. Of these, the photoelectric switch 11 is a U-shaped member, and a light projector 11a and a light receiver 11b are provided at both ends thereof. Therefore, the light C output from the light projector 11a is received by the light receiver 11b. Moreover, the photoelectric sensor 11 has its base end fixed to the end surface 5a of the elevator 5 so that the light projector 11a and the light receiver 11b are occupied on the same horizontal plane.

The dog 4 is a light-shielding plate formed in a rectangular shape. The long side of the dog 4 is along the elevating direction of the elevator 5, and the short side is perpendicular to the end surface 5 a of the elevator 5. One of them is fixed to the elevator pillar 3. Moreover, the dog 4 is fixed to the elevator pillar 3 so as to be occupied between the light emitter 11a and the light receiver 11b of the photoelectric switch 11 while the elevator 5 is being moved up and down.

According to the positioning device having the above configuration, when the elevator 5 moves up or down and the dog 4 is occupied between the projector 11a and the light receiver 11b of the photoelectric switch 11, the light C is blocked by the dog 4. To be done. As a result, the dog 4 is detected by the photoelectric switch 11, and the elevator 5 is stopped by the detection signal at this time. Thus, the elevator 5 is positioned.

[0005]

[Problems to be solved by the device]

 However, in the positioning device for the elevator according to the related art as described above, a positioning error occurs due to the length a of the long side of the dog 4. That is, when the elevator 5 is raised, when the lower end of the dog 4 in the figure is occupied between the projector 11a and the light receiver 11b of the photoelectric switch 11, the light C is first blocked by this lower end, and the detection at this time is detected. The signal stops the elevator 5. On the other hand, when the elevator 5 is descending, when the upper end of the dog 4 in the figure is occupied between the light emitter 11a and the light receiver 11b, the light C is first blocked by this upper end, and the detection signal at this time is detected. Thus, the elevator 5 stops. Therefore, a positioning error corresponding to the length a occurs when the climbing machine 5 moves up and down. If such a difference causes a step between the parking floor and the elevator 5, it may be impossible to move the pallet or the like.

Therefore, as shown in FIG. 3, a dog 21 having a length b in the ascending / descending direction of the elevator 5 that is sufficiently shorter than the length a was manufactured and used as a positioning device for the elevator. In No. 21, not only there is a problem in intensity, but the light C output from the projector 11a may not be completely blocked and may malfunction.

In view of the above-mentioned conventional technology, the present invention provides a positioning device for a moving body, such as an elevator, which can position a moving body that reciprocates along a predetermined path with high accuracy and does not have problems of strength and malfunction. The purpose is to

[0008]

[Means for Solving the Problems]

 The configuration of the present invention to achieve the above object is a positioning member fixed in the vicinity of a moving body that reciprocates along a predetermined path along the reciprocating movement direction, and having a predetermined length in the reciprocating movement direction, Along the reciprocating movement direction, there is an interval slightly shorter than the predetermined length of the positioning member, and the positioning member is detected while facing the positioning member during the movement of the moving body. Therefore, two non-contact switches fixed to the moving body are provided.

[0009]

[Action]

 According to the present invention having the above-mentioned structure, when the moving body moves in a predetermined route in any direction, the two non-contact switches are simultaneously positioned only when the moving body is occupied at a certain position. A detection signal is output in opposition to the member. Therefore, based on both detection signals at this time or the detection signal of the non-contact switch occupying the upstream side in the moving direction of the moving body, the moving body is stopped and the moving body is stopped depending on the moving direction. Positioning is performed with high accuracy without any difference.

[0010]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The same parts as those of the conventional art are designated by the same reference numerals, and the detailed description thereof will be omitted.

FIG. 2 is a perspective view of a positioning device for an elevator according to an embodiment of the present invention. As shown in the figure, the positioning device for the elevator includes photoelectric switches 1 and 2 and a dog 4.

Of these, the photoelectric switches 1 and 2 are U-shaped members similar to the photoelectric switch 11 shown in FIG. 2, and the both ends of one photoelectric switch 1 have a light projector 1 a and a light receiver. 1b is provided respectively, and a projector 2a and a photoreceiver 2b are provided at both ends of the other photoelectric switch 2, respectively. Moreover, like the photoelectric switch 11, these photoelectric switches 1 and 2 have their base end portions of the elevator 5 so that the light projector 1a and the light receiver 1b and the light projector 2a and the light receiver 2b are respectively occupied on the same horizontal plane. It is fixed to the end face 5a.

Further, these photoelectric switches 1 and 2 are fixed in series along the ascending / descending direction of the elevator 5, and the distance between them is slightly shorter than the length a of the dog 4. Therefore, the elevator 5 moves up and down, and when the upper end of the dog 4 in the figure is occupied between the light emitter 1a and the light receiver 1b of one photoelectric switch 1, at the same time as the light emitter 2a of the other photoelectric switch 2 The lower end of the dog 4 in the figure occupies between it and the light receiver 2b.

Therefore, according to the above-described embodiment, when the elevator 5 is raised, the lower end of the dog 4 in the figure passes between the projector 1a and the photoreceiver 1b of the photoelectric switch 1 and the projector 2 of the photoelectric switch 2 is passed. When the space between the light receiving device 2a and the light receiving device 2b is occupied, the lights A and B respectively output from the light projecting devices 1a and 2a are blocked at the upper end and the lower end of the dog 4 in the figure. Also outputs a detection signal.

On the other hand, when the elevator 5 descends, the upper end of the dog 4 in the drawing passes between the projector 2a and the photoreceiver 2b of the photoelectric switch 2, and the projector 1a and the photoreceiver 1b of the photoelectric switch 1 When the elevator 5 is occupied at the same position as during the ascending, that is, when the elevator 5 is occupied, the lights A and B are blocked at the upper end and the lower end of the dog 4 in the figure, and the photoelectric switch 1, A detection signal is output from either of the two. In other words, the detection signal is output from any of the photoelectric switches 1 and 2 only when the elevator 5 is occupied at the same position in both the ascending and descending directions.

Therefore, both detection signals at this time or the detection signal of the photoelectric sensor occupying the downstream side of the elevator 5 in the ascending / descending direction, that is, the detection signal of the photoelectric sensor 2 when ascending and the photoelectric sensor when descending Since the elevator 5 is stopped based on the detection signal of No. 1, the elevator 5 is positioned with high accuracy without the stop position being different between the ascending and descending positions.

[0017]

[Effect of device]

 As described in detail in connection with the above embodiments, according to the present invention, a positioning error does not occur depending on the moving direction of the moving body. Therefore, the moving body is positioned with high accuracy. Further, since the positioning member can be formed sufficiently large (long), there is no problem of strength or malfunction.

[Brief description of drawings]

FIG. 1 is a perspective view of a positioning device for an elevator according to an embodiment of the present invention.

FIG. 2 is a perspective view of a positioning device for an elevator according to the related art.

FIG. 3 is a perspective view showing another example of the dog in the positioning device for the elevator according to the related art.

[Explanation of symbols]

 1, 2 Photoelectric switch 1a, 2a Emitter 1b, 2b Light receiver 4 Dog

Claims (1)

[Scope of utility model registration request] 1. A positioning member fixed along the reciprocating direction in the vicinity of a moving body that reciprocates along a predetermined path, and having a predetermined length in the reciprocating direction, and along the reciprocating direction. And has a space slightly shorter than a predetermined length of the positioning member, and is fixed to the moving body so as to face the positioning member and detect the positioning member during movement of the moving body. Positioning device for a moving body, comprising: