JP2002110004A - Passing detection switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passing detection switch capable of detecting passing of a carrying article in both of the reciprocating directions on a carrier line. SOLUTION: This passing detection switch is constituted of a dog 1 to lower as it is pushed down by the passing carrying article, a mounting shaft 3 axially providing a dog mounting plate engaged with the dog, a switch plate 4 axially provided so as to integrally rotate with the dog mounting plate 2, a spring 11 normally projecting a part of the dog 1 on the carrier line and extended to be pushed down at the time when the carrying article passes and a limit switch 7 a detection end of which is made contact with the switch plate 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique of a passage detection switch for detecting the passage of an article conveyed on a conveyance line, and more particularly to a technique of a dog type passage detection switch using a limit switch.

[0002]

2. Description of the Related Art Various types of passage detection switches are used as passage detection switches for detecting the passage of a transferred object on a transfer line for transferring a transferred object such as a container. Has been done.
For example, an organic carbonization device that processes and carbonizes industrial waste made of organic matter and enables reuse as carbonized material sends a container loaded with industrial waste into an oxygen-free furnace (carbonization chamber). Is a device for carbonizing industrial waste while sequentially transporting it inside the furnace.

In such an organic carbonizer,
Since it is necessary to perform detection in a high-temperature furnace, a mechanical detection method is employed, and a dog-type detector using a limit switch as shown in FIG. 2 is suitably used. A conventional passage detection switch applied to an organic carbonizer will be described with reference to FIG.

[0004] The dog 1, which is partially protruded on a transfer line 9 in the organic carbonizer, is integrated with a dog mounting plate 2 that rotates about a mounting shaft 3. The switch plate 4 is also integrated with the dog mounting plate 2, and rotates around the mounting shaft 3 to operate the limit switch 7. A weight 6 is attached to the dog attachment plate 2 via a weight attachment bar 5 so that the dog 1 returns to an initial state in which the dog 1 partially protrudes from the transport line 9 by gravity after passing through the transported object 8. It has become.

[0005] Here, when a container (conveyed object) 8 is conveyed along the conveying line 9 and passes over the dog 1, the dog 1
Is tilted, the limit switch 7 is operated, and the passage of the transferred object can be detected.

[0006]

However, the conventional passage detection switch shown in FIG. 2 can only detect passage in the direction indicated by the arrow in the figure, and cannot detect passage in the opposite direction. Further, since the weight is used, it is necessary to widen the detection operation range, and it is difficult to perform fine adjustment. Furthermore, it is necessary to secure a space in which the weight and the switch plate rotate around the mounting shaft, and there are great restrictions on the mounting position and the mounting space of the device.

An object of the present invention is to provide a passage detection switch which can solve the above-mentioned problems, and can detect the passage of the object to be conveyed during reciprocating conveyance while minimizing the restrictions on the mounting position and the mounting space. Aim.

[0008]

According to the present invention, a spring is used in place of a conventional weight, and the operation of a limit switch can be adjusted using the tension of the spring so that the passage detection switch can be finely controlled. It is. That is, the present invention
A dog 1 that partially protrudes on the transport line and is pushed down by a conveyed object to be moved down, a dog mounting plate 2 provided with the dog, a mounting shaft 3 provided with the dog mounting plate, On the shaft 3, the dog mounting plate 2
A switch plate 4 that is pivotally mounted so as to rotate integrally with the switch plate 4 and is engaged with the switch plate 4 to always partially protrude the dog 1 onto a transport line. A spring 11 that is adjusted so that it can be pushed down
And a limit switch (7) having a detection end in contact with the switch plate (4). did.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a passage detection switch according to the present invention will be described with reference to FIG. In the present invention, the dog 1 partially protruding on the transfer line 9 in the organic carbonizer is formed integrally with the dog mounting plate 2 rotating about the mounting shaft 3, and the dog mounting plate 2 is 9 are arranged substantially in parallel. And
The head of the dog 1, which partially protrudes above the transport line 9, is pushed down by the passage of the transported object 8. This arrangement of the dog 1 makes it possible to detect the passage of the dog 1 even when the dog 1 projects very little onto the transport line 9, and to surely push down the dog irrespective of the transport direction of the load. Is now available. Therefore, the movement of the dog is the same regardless of whether the transport direction of the transported object 8 is forward or backward, and it is possible to reliably detect the passage of the transported object 8 in either direction.

The rotation of the dog mounting plate 2 due to the dog 1 being pushed down is transmitted to the integrally mounted switch plate 4 via the mounting shaft 3, and the switch plate 4 rotates about the mounting shaft 3. . And
This rotation causes the limit switch 7 to operate. One end of a spring 11 is joined to the switch plate 4, and the other end of the spring 11 is connected to an adjustment bolt 12 provided in an adjustment slot 13.
Is joined to. Then, the strength of the spring 11 and the mounting position of the adjustment bolt 12 are adjusted respectively to detect the passage of the dog 1 such as the extent of the protrusion of the dog 1 on the transport line 9 and the extent of the restoring force of the dog restoring after passing the transported object. The switch can be finely adjusted.

[0011]

According to the present invention, it is possible to reliably detect the passage of an object even when the object is reciprocated. In addition, the size of the passage detection switch can be reduced, the restriction on the installation location can be greatly reduced, and the maintainability can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a passage detection switch of the present invention.

FIG. 2 is a schematic diagram illustrating an example of a conventional passage detection switch.

[Explanation of symbols]

 Reference Signs List 1 dog 2 dog mounting plate 3 mounting shaft 4 switch plate 5 weight mounting bar 6 weight 7 limit switch 8 object (container) 9 transfer line 10 mounting plate 11 spring 12 adjustment bolt 13 adjustment slot

Claims (1)

[Claims] 1. A dog 1 which partially protrudes on a transfer line and is pushed down by a conveyed object to be moved down, a dog mounting plate 2 having the dog fixed thereto, and a mounting shaft having the dog mounting plate mounted thereon. 3, a switch plate 4 which is mounted on the mounting shaft 3 so as to rotate integrally with the dog mounting plate 2, and which is locked to the switch plate 4,
Normally, the dog 1 is partially protruded on the transport line,
When the object is passed, the spring comprises a spring 11 adjusted so as to be depressed and stretched, and a limit switch 7 in which a detection end is brought into contact with the switch plate 4. A passage detection switch, characterized in that the passage detection can be performed.