JPS58223580A - Apparatus for supporting and detecting article to be conveyed - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support detection device for a conveyance device in which a support portion of a conveyance object moves along a predetermined path, among support detection devices for a conveyed object. To provide a device that does not require any active elements (1) and does not require connecting the movable side and the fixed side with a cable.

Conventionally, in the above-mentioned conveyance device, if the support part is moved while the object to be conveyed is not supported in a normal state, the object to be conveyed may tilt or fall. etc., and collect the signal from the supporting part on the movable side to the stationary side using a cable carrier, etc., and confirm that the conveyed object is being supported normally. Electric power is supplied from the stationary side to the supporting part side via the fixed side to move the conveyed object. However, if various devices are congested in the moving path of the support part, and if the entire device is housed in a narrow space such as an airtight box, it may be difficult to install cable carriers, etc. It is also unfavorable from an economic point of view.

Therefore, in the present invention, a switch that is turned on and off by the load of the loaded object is attached to the transported object support part of a moving body that moves along a predetermined route, and the switch is attached to the moving object. a first wire ring connected to form a closed circuit;
A second wire ring is provided on the fixed side of the moving path to electromagnetically couple with the first wire ring when the movable body is in a predetermined position, an excitation circuit is provided for injecting an alternating current signal into the second wire ring, The present invention is characterized in that it is configured to detect the state of the switch by monitoring the excitation state of the coil of No. 2, and has the effect of being able to collect signals without contact, without requiring any power source or other active elements on the moving object side. It is preferable from an economical point of view because it has a simple configuration.

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 4.

FIGS. 1 and 2 show the configuration of a conveying device that is composed of a combination of a horizontally moving body and a vertically moving body.

(1) is a first moving body that slides in the lateral direction [direction of arrow A] driven by a screw shaft (3) that is rotationally driven by a motor (2), and is fixed via a linear slide guide (4). It is supported from the side (5). (6a) (6b
) is a second movable body disposed at a certain distance from the first movable body (1) in the movement path of the first movable body (1), and each motor (7) The fixed side (5) is moved up and down in the vertical direction [in the direction of arrow B] by driving the screw shafts (8a) and (8b) rotationally driven by the linear guide (9).
Supported by. (10aX10a), (lobX
lob) are the first and second moving bodies (1) and (6a
) (6b) with one end identified in fork (
The distance L1 of the fork (10b) (10aX10a) is
0b) is set smaller than the interval L2. 0υ is a container as an object to be transported, and as shown in Fig. 3, it is a stepped arm that has a part (2) supported by a fork (10aX10a) and a part supported by a fork (10bXlOb) on both sides, respectively. 04) is stored, and a substance such as a liquid that needs to be transported between the first and second moving bodies <1) and (6a) and (6b) is injected into this container Ql). ing. (15aX15b) is a switch attached to the part of each fork (10aX10b) that supports the container Oυ, and the detection protrusion 0 is the switch that supports the container αυ.
For example, by being pressed down with a load of αη is the first and second moving body (1) (6a) (6
b) The first wire ring attached to 1. Second moving body (1) (6
a) Corresponding to the position of (6b), from the fixed side (5) to the first wire ring αη, the electromagnetic 4 is the first wire ring a′i)
The relationship between the switch and the switch (15aX15b) and the second coil also show the main part of the processing circuit in the subsequent stage. That is, the first wire αη and the switch (15aX15b) are connected in series to form a closed circuit, and the second wire (g) is excited by the excitation circuit aI, and is in an excited state due to this high frequency. is monitored by the monitor circuit (A), and it is detected whether or not the switches (15a) and (15b) on the first coil αη side are both in a make-up state. Controls energization. In the monitor circuit (4), the first wire ring αη and the second wire wire (G) are coupled through a mutual inductance M, and the closed circuit on the first wire ring side (1) is turned on. The switch (1
5aX15b) is configured to detect the state of the series circuit.

With this configuration, for example, a container aυ containing a highly toxic substance is supported by the first moving body (1) as shown in FIG. 1, and this is supported by the fork (
10 b At the moment when the second wire ring (G) on the side is electromagnetically coupled, the fork (10bXlOb) is securely connected to the arm α of the container aυ.
If the water is supported, switch (15aX15b)
When the fixed-side monitor circuit 4 detects that the series circuit of the switch (15aX15b) is in the on state, it permits the motor (7) to be energized thereafter. At this time, the fork (
10a) If the container αυ is not transferred normally from the second moving body (6a) Norfolk (1ob) to the second moving body (6a) )O
Foot (10bX10b) (7) NM switch 1
5aX15b) is in a break state, the circuit of the first wire αη becomes open, and monitor circuit 4 detects this and instructs the motor (7) to be de-energized thereafter. The second movable body [6a) is prohibited from being driven upward to prevent the container αη from tilting and overturning.

Also, the fork (10b x 10
b) When transferring the container Uυ supported by the first moving body (1) to the fork (10a x 10a), the receiver should close the switch (15a x 15b) on the first moving body (1) side during the transfer.
detects that the is not in the make state and moves the second moving body (
6a) is configured to inhibit the downward drive.

In addition, in the above embodiment, each moving body was provided with one switch for each fork, but this applies only when one switch is provided on one fork, and when multiple switches are provided on each fork. You could think so.

As described above, according to the present invention, a switch that does not require a power source and a first wire ring are provided on the movable body side, and a second wire ring is provided on the stationary side and electromagnetically coupled to the first wire ring. established,
Since the state of the closed circuit of the first wire ring is detected from the excitation state of the second wire ring, there is no need for any cables connecting the moving body side and the fixed side as in the past, and the conveyed object can be transported without contact. It is possible to detect the support state of the device, making it suitable for transport devices used in narrow spaces, and is also more economical than conventional devices that connect using cable carriers or the like.

[Brief explanation of the drawing]

Fig. 1 is a side view of an embodiment of a transport device equipped with the support detection device of the present invention, Fig. 2 is a plan view taken along the line X-X in Fig. 1, and Fig. 3 is a container as an object to be transported. The front view and Figure 4 are the main parts! It is a connection diagram. (1)...First moving body, (5)...Fixed side, (6
a) (6b)...Second moving body, (10aX10b)
...Fork, (15aX15b) - Switch, Q
Q...Detection protrusion, αη...First wire ring, (to)
...Second coil, -(1...excitation circuit, (4)
... Monitor circuit agent Yoshihiro Morimoto Figure 1 Figure 2

Claims (1)

[Claims] 1. A switch that turns on and off depending on the load of the loaded object is attached to the object supporting part of a moving body that moves along a predetermined route, and a closed circuit is established between the moving object and the switch. a first wire ring connected to form a first wire ring, and a second wire ring that is electromagnetically coupled to the first wire ring when the movable body is in a predetermined position on the fixed side of the moving route; A support detection device for a conveyed object having a length of 5 m and including an excitation circuit that injects an alternating current signal into a second wire ring, and monitors the excitation state of the second wire ring to detect the state of the switch.