JPH0530021U - Belt switch mounting device for limit switch with bias detection lever - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a limit switch device that can easily and freely adjust the mounting position when the limit switch device with a detection lever that detects running deviation of a belt conveyor is restarted. [Structure] One side end is a coupling mechanism between the other side end of a plate-shaped fixed seat attached to a frame of a belt conveyor and one end side of a plate-shaped limit switch mounting seat, and one end of the fixed seat is attached to the fixed seat. A tilting fulcrum member which is fixed to one end of the other side and whose other end is rotatably supported by a limit switch mounting seat, and one end of which is rotatably supported by the other end of the other end of the fixed seat. In addition, the other end is provided with a support lever that can be locked at a plurality of mounting locations on the limit switch mounting seat, so that the belt conveyor bias recovery procedure can be performed easily and promptly. Even if the running position of the belt is shifted, the limit switch detection lever can be freely placed at a position corresponding to the shift, and the belt conveyor can be immediately adjusted for running adjustment.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a limit switch mounting device for detecting deviation of a belt conveyor that transports ore raw materials and the like.

[0002]

[Prior Art]

 When transporting ore raw materials, etc. by a belt conveyor, if unevenness occurs in the moving conveyor belt, belt damage and overflow of the raw materials will occur. Therefore, as described in Japanese Utility Model Publication No. 61-189015. The limit switch device is installed on both sides of the conveyor belt with a certain space.When the edge of the belt comes into contact with the detection lever, the limit switch is activated and a belt conveyor operation stop signal is sent to the drive motor. Is supposed to stop.

In this limit switch device, as shown in FIG. 4, a detection lever 1 and a limit switch 2 are attached to a plate-like limit switch attachment seat 3, and the limit switch attachment seat 3 is fixed to a conveyor frame 4. It has a structure in which it is fixed to the plate-like fixed seat 5 with a plurality of bolts 6.

Therefore, after the belt conveyor motor is stopped by the signal from the cable 7 that transmits the signal transmission from the limit switch 2 by the operation of the detection lever 1 that detects the deviation of the conveyor, after the cause of the deviation is removed. In order to restart the belt conveyor, it is necessary to move the locked limit switch device out of the operating range. For that purpose, the limit switch mounting seat 3 and the fixed seat 5 are detached by the bolt 6 and separated, and when they are in normal operation, they are reassembled and made to function.

Therefore, at the time of restarting after the conveyor is stopped due to the deviation detection of the belt conveyor, the limit switch device is removed for moving and the assembly after returning to normal operation is done by removing and installing the joined bolts. Took time and effort.

Further, the limit switch is removed, and the limit switch is attached again when the deviation of the belt can be corrected. If the deviation becomes larger during the correction work of the belt, it is detected. There is also a problem that the belt cannot be stopped automatically and the operator has to perform visual operation to damage the belt.

[0007]

[Problems to be solved by the device]

 The purpose of the present invention is to include a fixed seat mounted on the frame of the belt conveyor, a limit switch mounting seat that is detachably mounted on the fixed seat, and a detection lever and a limit switch provided on the mounting seat. Limit switch device that has a coupling mechanism that does not require removal and correction to correct the bias in the limit switch device described above and mounting during normal operation, and that allows position adjustment of the limit switch to be relatively easily and freely performed. To provide.

[0008]

[Means for Solving the Problems]

 The limit switch device of the present invention is a mechanism for connecting one end of the plate-shaped fixed seat mounted on the frame of the belt conveyor to the other end of the plate-shaped fixed switch seat, which is also a connecting mechanism. A tilt fulcrum member, one end of which is fixed to one end of the other side of the fixed seat and the other end of which is rotatably supported by a limit switch mounting seat, and one end of which is attached to the other end of the other side of the fixed seat. It is characterized in that a supporting lever pivotally supported and having the other end lockably formed at a plurality of mounting positions of the limit switch mounting seat is provided.

[0009]

[Action]

 In the limit switch device of the present invention, the limit switch mounting seat can be tilted by the tilt fulcrum member, and the tilt position can be arbitrarily adjusted, so that the limit switch detection lever is retracted from the fixed position. It is easy to adjust the return position and the setting position of the detection lever.

[0010]

【Example】

 FIG. 1 shows an embodiment of the present invention.

In the figure, in this example, one side end of the plate-shaped fixed seat 5 is attached to the frame 4 of the belt conveyor by welding or the like, and the other side end is cushioned by a spring mechanism 8 on its upper surface to reduce the impact at the time of detection. The detection lever 1 and the limit switch 2 are connected by a connecting mechanism A to one end of a plate-like limit switch mounting seat 3.

The connecting mechanism A includes a tilt fulcrum member 10 and a supporting lever 9. The tilt fulcrum member 9 is composed of two plate-shaped members sandwiching the plate-shaped fixed seat 5, the lower end of each is fixed by welding to one end of the upper edge of the fixed seat 5, and the upper end thereof is limited by a pin 11. The limit switch mounting seat 3 is pivotally supported by the switch mounting seat 3, and the limit switch mounting seat 3 is configured to be tiltable in the pivoting position. The lower end and the upper end of the support lever 9 are bifurcated so as to sandwich the plate-shaped fixed seat 5 and the limit switch mounting seat 3, respectively. The lower end 12 is rotatably supported by a pin 13 on the side opposite to the tilt fulcrum member 10 at the upper edge of the fixed seat 5, and the upper end 14 is an insertion provided on the limit switch mounting seat 3. The pin 16 is inserted into the hole 15 and locked. The insertion holes 15 provided in the limit switch mounting seat 3 are provided at a plurality of positions. By tilting the limit switch mounting seat 3 by arbitrarily selecting the insertion hole 15 into which the pin 16 is to be inserted. The angle can be arbitrarily locked, and therefore, the distance between the detection lever 1 fixed to the limit switch mounting seat 3 and the side edge C of the belt conveyor can be arbitrarily adjusted.

In the limit switch according to the present example, the biased state shown in FIG. 3 occurs from the normal traveling state of the belt conveyor B shown in FIG. When it is rotated by an angle, the stop signal of the drive motor from the limit switch 2 is transmitted from the cable 7 to the drive motor (not shown) and stopped. After that, when the belt conveyor B is driven again after the cause of the deviation is removed, the detection lever 1 is retracted from the side edge C of the belt conveyor, the lock pin 16 of the upper end portion 14 of the support lever 9 is inserted into the insertion hole. The limit switch mounting seat 3 can be easily removed by detaching the limit switch mounting seat 3 from the base 15 and tilting it to the side opposite to the belt conveyor with the pivot pin 11 of the tilt fulcrum member 9 as a fulcrum. Further, at the tilted position, the lock pin 16 is inserted into the insertion hole 15 of the limit switch mounting seat 3 via the tilt fulcrum member 10 and locked, so that the side edge C of the belt conveyor B of the detection lever 1 at the time of re-operation. The distance from can be adjusted by arbitrarily selecting a large number of insertion holes 15.

[0014]

[Effect of the device]

 The present invention has the following effects.

(1) It is possible to easily and swiftly restore the bias of the belt conveyor.

(2) Since the mounting position of the limit switch can be freely selected, even if the traveling position of the belt is deviated while correcting the deviation of the belt conveyor, the deviation can be detected and the belt conveyor can be stopped. The belt conveyor can be prevented from being damaged.

[Brief description of drawings]

FIG. 1 shows an overall structure of a limit switch structure according to the present invention.

FIG. 2 shows a normal conveyance state of a belt conveyor.

FIG. 3 shows a state where a side edge of the belt conveyor comes into contact with a detection lever and a limit switch is operated when the belt conveyor is biased.

FIG. 4 shows a conventional limit switch structure.

[Explanation of symbols]

 1 Detection lever 2 Limit switch 3 Limit switch mounting seat 4 Conveyor frame 5 Plate-shaped fixed seat 6 Limit switch mounting seat fixing bolt 7 Signal transmission cable 8 Spring mechanism 9 Support lever 10 Tilt fulcrum member 11 Pin 12 Lower end of support lever 13 Pin at the lower end of the supporting lever 14 Upper end of the supporting lever 15 Lock insertion hole 16 Lock pin B Belt conveyor C Side edge of belt conveyor

Claims (1)

[Scope of utility model registration request] 1. A limit switch device with a detection lever, which is provided on both sides of a belt conveyor at a predetermined distance from each other, comprises a fixed seat attached to a frame of a belt conveyor and a limit switch installation seat to which the limit switch device is attached. As a connecting mechanism for connecting, a tilting fulcrum member, one end of which is fixed to one end of the other side of the fixed seat and the other end of which is pivotally supported by a limit switch mounting seat, and one end of which is the other of the fixed seat. A limit switch mounting device with a belt conveyor deviation detection lever, which is provided with support levers that are pivotally supported at the other end of the side edge and that can be locked at a plurality of mounting positions on a limit switch mounting seat.