JP2006264938A - Conveyor belt meandering detecting and preventing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a meandering detecting and preventing device for easily detecting meandering when a conveyor belt meanders, and for quickly eliminating a cause of malfunction to perform normal operation. <P>SOLUTION: This meandering detecting and preventing device is structured of a plate-like body 21 detachably fitted, crossing a framework 13 supporting a driving pulley 9 for driving a conveyor belt 8 from outside in both ends in the cross direction, an operation switch 25 or 55 fitted to both the ends of the plate-like body 21 with an appropriate horizontal distance outside in the horizontal direction from a side end of the conveyor belt 8, a scraper part 22 with an edge 22a provided in the plate-like body 21 in the travelling direction of the conveyor belt 8, a hose fitting 30 with a nozzle detachably fitted to a lower surface of the scraper part 22, a wire for connecting the operation switch 25 or 55 to a motor for driving the conveyor belt 8, and a wire for connecting the operation switch 25 to an alarm device for alarming meandering of the conveyor belt 8. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a meandering detection and meandering prevention device for a conveyor belt.

23 to 25 are diagrams illustrating a conventional conveyor belt 8 in which the meandering detection and meandering prevention device of the present invention is implemented.
In FIG. 23, the transport soil G on the belt feeder 3 driven by the pulley 4 reaches the guide body 5, falls on the hopper 7 while being crushed by the crushing device 6, and is guided to the conveyor belt 8.
FIG. 24 is a side view of the conveyor belt 8 and shows a state in which the soil G dropped from the hopper 7 to the conveyor belt 8 is conveyed to the upper left.
FIG. 25 is a cross-sectional view taken along the line XX appropriately separated from the pulley 9 of FIG. 24 toward the traveling side. In FIGS. 24 and 25, soil G is attached to both ends of the conveyor belt 8 supported in a concave shape by a plurality of rollers 12. A skirt 14 of a pop-out prevention tool curved inward so as not to fall out is fixed by a support tool 15. Reference numeral 20 denotes a gantry post of the conveyor belt 8.

Next, the disadvantages of the prior art will be described with reference to FIGS.
FIG. 26 is a view showing a state in which the soil G leaks from the skirt 14 to the side of the conveyor belt 8 and adheres to the back surface 8 c of the conveyor belt 8. As shown by the dotted line 14a in FIG. 25, the skirt 14 turns outward and the soil G that has fallen from the hopper 7 jumps out of the conveyor belt 8 and drops, and a part of the soil G is dropped on the conveyor belt 8 on the return side. It adheres to the back surface 8c and proceeds in the direction of the pulley 9.

  Next, as shown in FIG. 27, the soil G adhering to the back surface 8c of the conveyor belt 8 adheres to the outer peripheral surface 9a of the pulley 9, resulting in irregularities, and the rotational radius is locally different. It will cause a faulty meander.

  FIG. 28 is a diagram showing a traveling state in which the positional relationship between the conveyor belt 8 and the pulley 9 and the hopper 7 is normal. In this state, the soil G is in the recess of the conveyor belt 8 and a small amount of soil lump is present. Is prevented by the skirt 14 and does not fall out of the conveyor belt 8.

  FIG. 29 is a diagram showing an abnormal running state in which the positional relationship between the conveyor belt 8 and the pulley 9 and the hopper 7 is shifted in the width direction. The soil G attached to the back surface 8c of the return-side conveyor belt 8 is the pulley 9. The outer peripheral surface 9a is made uneven, and the conveyor belt 8 is inclined and meandered. Once the meandering occurs, the adhesion of the soil G on the outer peripheral surface 9a of the pulley 9 is accelerated, and the entire skirt 14 is turned up to further increase the spillage. And it does not naturally return to normal.

  Therefore, conventionally, when an operator monitors the running of the compare belt 8 and finds meandering, the running of the conveyor belt 8 is stopped, and the soil G adhering to the pulley 9 is scraped off and run again, which is a large and expensive device. Is virtually avoided. However, there is a problem of time loss and troublesome troubles in constantly monitoring and stopping the running of the conveyor belt 8 at the time of trouble, and scraping the soil G adhering to the pulley 9 to run again.

As a meandering detection device for a pipe conveyor, a meandering detection device is disclosed for eliminating the problem of deviation from the detection operation range of the detection device due to rounded edges of the conveyor (see, for example, Patent Document 1).
JP 2004-59160 A

  The present invention has been proposed in view of the above-mentioned problems of the prior art. When the conveyor belt meanders, it is easily detected, and when the meandering occurs, the cause of the malfunction is promptly removed, and normal An object of the present invention is to provide a meandering detection and meandering prevention device that can be operated in a simple manner.

  As a result of various studies, the present applicant has been able to operate the contact type switch to automatically issue an alarm when the conveyor belt meanders and the belt moves to a predetermined lateral position, and to stop the conveyor belt from running. In addition, the present inventors have invented a simple meandering detection and meandering prevention device that does not increase the cost of scraping the soil adhering to the pulley that caused the meandering. The present invention has been created by such research.

  According to the meandering detection and meandering prevention device of the conveyor belt of the present invention, the plate-like body 21 detachably attached across the gantry 13 and 13 holding the drive pulley 9 of the conveyor belt 8 from both outer sides in the width direction; , An operation switch 25 or 55 attached to both ends of the plate-like body 21 with a suitable horizontal distance from the side end of the conveyor belt 8 in the horizontal direction, and the conveyor belt of the plate-like body 21 8, a scraper portion 22 with an edge attached in the running direction, a hose fitting 30 with a nozzle detachably attached to the lower surface of the scraper portion 22, the operation switch 25 or 55, and the conveyor belt 8. An electric wire L26m or L56m that connects the motor Mp, an operation switch 25 or 55, and an alarm device Sp that warns the meandering of the conveyor belt. A line L26s or L56s, in being configured.

  When the conveyor belt is meandering and touches the switch part of the operation switch, the alarm device issues an alarm and the motor stops to stop the conveyor belt from running, and then scrapes the top adhering to the belt pulley. Is blown away with the air jetted from the nozzles to correct the problem and restart the conveyor belt. Further, a limit switch or a push button switch can be used as the operation switch.

The effects of the meandering detection and meandering prevention device of the present invention described above are listed below.
(1) The conventional means for preventing meandering or emergency stop does not have a method for preventing meandering rapidly, and according to the meandering detection and meandering prevention device of the conveyor belt of the present invention, it is removed from the end of the conveyor belt 8. Since an operation switch that connects the conveyor belt drive motor and an alarm device is installed with an appropriate horizontal distance on the side, an alarm will sound if the meandering width exceeds a predetermined value, and the motor will stop, causing the meandering There is an advantage that correction can be made at an early stage without increasing the cause.
(2) If a push button type switch is used as an operation switch, it is less damaged than a limit switch and is more durable, so it is suitable for an external site.
(3) The meandering detection and meandering prevention device has the advantage that if the installation is reversed, the meandering detection function scrapes off the soil adhering to the pulley to provide the meandering prevention function, so that it is easy to work and can be applied to the field.
(4) A hose fitting equipped with a nozzle is attached to the meandering detection and meandering prevention device, so if it is connected to an external air hose, it can be easily blown off from the pulley and restarted. There are advantages.

Hereinafter, embodiments of a meandering detection and meandering prevention device for a conveyor belt according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective configuration diagram of a meandering detection and meandering prevention device 2 for a conveyor belt according to a first embodiment of the present invention, and FIG. 2 is a side view thereof.

  In FIG.1 and FIG.2, the pulley mount 13 is assembled on the upper part of the belt conveyor mount 12 assembled on the floor B which is a foundation. The pulley mount 13 supports the rotating shaft of the belt pulley 9 that drives the conveyor belt 8 and has a function for adjusting the running direction of the conveyor belt 8 by applying tension to the conveyor belt 8 with an adjusting bolt 13a. ing.

The plate-like body 21 constituting the meandering detection and meandering prevention device 2 is arranged on the upper part of the pulley base 13, 13 parallel to both side surfaces of the belt pulley 9, across the pulley base 13, and the shaft of the belt pulley 9 at the fixing portion 23. It is detachably attached parallel to the heart.
Reference numeral 16 in FIG. 2 denotes a conveyor frame that protects the conveyor belt 8. The main part indicated by the symbol A will be described later with reference to FIG.

FIG. 3 is a top view of FIGS. 1 and 2 and shows the relationship between the meandering detection and meandering prevention device 2, the pulley base 13, and peripheral devices such as the conveyor belt 8 and the belt pulley 9. In the figure, the meandering detection and meandering prevention device 2 is shaded to indicate that it is located below the travel side of the conveyor belt 8.
Limit switches 25 and 25 as operation switches are attached to the belt pulley 9 side of the plate-like body 21, and a scraper portion 22 with an edge 22 a is provided in the running direction of the conveyor belt 8. Reference numeral 24 denotes a handle that facilitates the attachment and detachment work of the plate-like body 21.

  FIG. 4 shows an attachment state when the meandering detection and meandering prevention device 2 is inverted and used as a meandering prevention function. In this case, limit switches 25 and 25 are positioned in the traveling direction of the conveyor belt 8 of the plate-like body 21, and a scraper portion 22 with an edge is positioned on the belt pulley 9 side. This FIG. 4 will be used again when explaining the operation described later.

  FIG. 5 is a top view of the meandering detection and meandering prevention device 2, and the configuration will be described with reference to FIG. 6 showing the main part A of the perspective view 1 and side view 2 and FIG. 7 showing the switch wiring. In FIG. 5, the upper side is the direction of the belt pulley 9, and the lower side is the running direction of the conveyor belt 8.

  The plate-like body 21 is detachably attached to the upper surface of the pulley mount 13 at both ends 21a and 21a. Referring to FIG. 6, when both ends 21a and 21a are mounted as a meandering detection function, the pulley mount In the case where both end portions 21a of the plate-like body are attached in parallel to the upper surface of 13 and are inverted and attached as a meandering prevention function, they are attached to the upper surface of the pulley mount 13 with an inclined surface of an inclined plate 23a having an inclination of about 15 degrees, An edge 22a of the scraper portion 22 is configured to contact the peripheral surface of the pulley 9 at an angle.

  Returning to FIG. 5, limit switches 25, 25 are attached to the end of the conveyor belt 8 in the width direction on the belt pulley 9 side of the plate-like body 21 at an appropriate interval. FIG. 8 is a side view of the limit switch 25. The switch rod 25a is positioned vertically upward with respect to the plate-like body 21 and has a height at which the upper part 2/3 of the rod 25a is in contact with the meandering detection of the conveyor belt 8. As shown in FIG. Reference numeral 24 in FIG. 5 is a handle for convenience of mounting the meandering detection and meandering prevention device 2 as a meandering detection function or as a meandering prevention function.

  5 and 6, a plate-like scraper portion 22 having an edge 22 a formed at the tip is provided flush with the end of the plate-like body 21 on the side opposite to the pulley, and on the bottom surface of the scraper portion 22. A hose fitting 30 shown in detail in FIG. 9 is detachably attached via a hexagonal nut-like support 28. In FIG. 9, reference numeral 29 denotes an air hose attached when necessary. A nozzle 31 a provided with a valve 31 is attached to the hose fitting 30 on the opposite side of the air hose 29.

  FIG. 7 is a diagram showing wiring relating to limit switches 25 and 25 in a state where the meandering detection and meandering prevention device 2 is reversely mounted as a meandering prevention function, and is connected to a covered line L25 between limit switches 25 to 25. The line L26 is connected to a control panel (not shown), and is further connected from the control panel to an alarm device Sp that issues an alarm via a line L26s, and is connected to a drive device Mp that drives a conveyor belt via a line L26m. .

The operation of the meandering detection and meandering prevention device 2 configured as described above will be described.
(1) When the conveyor belt 8 adheres to the belt pulley 9 due to the leakage of soil G and becomes a protrusion that increases the rotation radius, the conveyor belt 8 in one side of the conveyor belt 8 in FIGS. It contacts 25 switch rods 25a.
When the limit switch 25 is switched on, the alarm device Sp sounds and issues an alarm, and the operation of the drive device Mp is stopped.

(2) The worker recognizes the abnormal situation of the conveyor belt 8 by an alarm and confirms the traveling stop state.
For example, the actual state of whether or not the switch is turned on due to the jumping of the clod is confirmed. If the adhesion of the soil G to the belt pulley 9 is a cause of meandering, the meandering prevention measure is performed as follows.

  (3) Remove the meandering detection and meandering prevention device 2 from the pulley mount 13. Next, as shown in FIG. 4, the meandering detection and meandering prevention device 2 is reversed. Then, the scraper portion 22 that has been oriented in the traveling direction of the conveyor belt 8 is directed toward the belt pulley 9 so that the edge 22 a in FIG. 6 is in contact with the outer periphery of the belt pulley 9. Due to the meandering detection and the meandering prevention device 2 being reversed, the limit switch 25 is directed downward, and contact with the switch rod 25a due to meandering of the conveyor belt 8 is eliminated.

  (4) Next, an air hose 29 is attached to the hose fitting 30 and prepared so that air can be discharged from the nozzle 31 a by opening the valve 31.

  (5) Next, the belt pulley 9 is actuated to scrape off the soil G adhering to the outer periphery of the belt pulley 9 at the edge 22a, and at the same time, air is discharged from the nozzle 31a and blown away. At this time, the inclination of the scraper portion 22 has an effect on the scraping action. Further, the soil G falling onto the back surface of the conveyor belt 8 due to the scraping of the soil G is removed by removing the hose fitting 30 from the scraper portion 22 and moving it in the required direction by hand.

  (6) As the adhered soil G on the outer periphery of the belt pulley 9 is removed and the protrusions disappear and become flat, the eccentric meandering of the conveyor belt 8 disappears and the normal running state is restored. At this time, if there is a skirt turn 14a (FIG. 25), the original normal position is restored.

  (7) After confirming that the eccentric meandering of the conveyor belt 8 has disappeared and returned to the normal running state, the limit switch 25 is operated, and the operation of the conveyor belt 8 and the belt pulley 9 is stopped.

  (8) Next, the meander detection and meander prevention device 2 is reversed and attached to the normal position of the pulley mount 13 as shown in FIGS. 1 and 2, and the normal running of the conveyor belt 8 and the belt pulley 9 is resumed.

  By such simple equipment and work, the soil G is kept from leaking and dropping to a minimum, recovering at an early stage, and 2 to 3 man-hours required for the conventional work to restore the leak is 10 per person. It can be shortened to about minutes.

10 is a perspective configuration diagram of a conveyor belt meandering detection and meandering prevention device 32 according to a second embodiment of the present invention, FIG. 11 is a schematic front view of FIG. 10, and FIG. 12 is a top view of FIGS. is there.
Description of the same part as 1st Embodiment uses the same name and code | symbol, and abbreviate | omits and demonstrates about the same part as 1st Embodiment.

  10-12, the pulley mount 13 is assembled on the upper part of the belt conveyor mount assembled on the floor which is not illustrated. The pulley mount 13 supports the rotation of the belt pulley 9 that drives the conveyor belt 8 and has a function for adjusting the running direction of the conveyor belt 8 by applying tension to the conveyor belt 8 with the adjusting bolt 13a. Yes.

  A plate-like body 51 constituting the meandering detection and meandering prevention apparatus, indicated as a whole by reference numeral 32, is placed on the upper part of the pulley base 13, 13 parallel to both side surfaces of the belt pulley 9, across the pulley base 13, at the fixing portion 53. The belt pulley is detachably attached in parallel to the axis of the belt pulley.

  In FIG. 12 showing the relationship between the meandering detection and meandering prevention device 32, the pulley mount 13, and the peripheral belt conveyor belt 8 and the belt pulley 9, the meandering detection and meandering prevention device 32 is indicated by a wavy line. It shows that it is located below the traveling side.

  L-shaped support portions 56, 56 are attached to the upper portion of the plate-like body 32. When the push button type switch 55 as an operation switch is meandering the conveyor belt 8, the center of the button portion 55a is shown in FIG. In this way, it is attached so as to be in a height position in contact with the belt side end. Although not shown in detail, a scraper portion 52 with an edge 52a is provided on the travel side of the conveyor belt 8 of the plate-like body 51, as in the first embodiment.

  FIG. 13 is a top view showing the wiring of the pushbutton switches 55 and 55 of the meandering detection and meandering prevention device 32, and a covered line L55 between the pushbutton switches 55 to 55 along the plate-like body 51. Installed. A line L56 connected to the line L55 is connected to a control panel (not shown), is further connected to an alarm device Sp that issues an alarm from the control panel via a line L56s, and is connected to a drive device Mp via a line L56m.

  FIG. 14 is a side view of the pushbutton switch 55 attached to the plate-like body 51, and is attached to the support portion 56 with a long hole 56 a that can be adjusted in the vertical direction. The switch portion 55a is configured such that the pressing portion is coated with a resin so as to avoid wear and damage due to sliding, and the upper portion of the push button switch 55 is covered with a cover 57 so as to avoid damage due to falling soil G.

  FIG. 15 is a diagram showing an attached state of the hose fitting 30 for blowing away the soil G that has been scraped off. A nozzle 31 a provided with a valve 31 on the hose fitting 30 is attached to the back surface of the end portion of the plate-like body 51. As described above, the push-button switches 55 and 55 are attached to the upper surface of the plate-like body 51 symmetrically with the conveyor belt 8 interposed therebetween.

  Other configurations are substantially the same as those in the first embodiment.

The operation of the meandering detection and meandering prevention device 32 having the above configuration will be described.
(1) When the conveyor belt 8 adheres to the belt pulley 9 due to the leakage of earth G and becomes a protrusion that increases the turning radius, the belt belt 9 is pushed away from the normal running to meandering. It contacts and presses 55 switch part 55a.
When the switch-on is energized, the alarm device Sp sounds and issues an alarm, and the operation of the drive device Mp is stopped.

(2) The worker recognizes the abnormal situation of the conveyor belt 8 by an alarm and confirms the traveling stop state.
For example, the actual state of whether or not the switch is turned on due to the jumping of the clod is confirmed. If the adhesion of the soil G to the belt pulley 9 is a cause of meandering, the meandering prevention measure is performed as follows.

  (3) Remove the meander detection and meander prevention device 32 from the pulley mount 13. Next, as shown in FIG. 4, the meandering detection and meandering prevention device 32 is reversed so that the scraper portion 52 that has been oriented in the running direction of the conveyor belt 8 is directed toward the belt pulley 9, and the edge 52 a is the belt pulley 9. Attach so that it touches the outer periphery. The push button type switch 55 is directed downward by the reversal of the meandering detection and meandering prevention device 32, and the contact with the switch portion 55a due to the meandering traveling of the conveyor belt 8 is eliminated.

  (4) Next, an air hose is attached to the hose fitting 30 so that air can be released from the nozzle 31 a by opening the valve 31.

  (5) Next, the belt pulley 9 is caused to travel, the soil G adhering to the outer periphery of the belt pulley 9 is scraped off at the edge 52a, and at the same time, air is discharged from the nozzle 31a and blown away. Further, the soil G falling on the back surface of the conveyor belt 8 due to the scraping of the soil G is removed by removing the hose fitting 30 from the scraper portion 52 and moving it in a necessary direction by hand.

  (6) As the adhered soil G on the outer periphery of the belt pulley 9 is removed and the projection of the soil G disappears and becomes flat, the eccentric meandering of the conveyor belt 8 disappears and the normal running state is restored. At this time, if there is a skirt turn 14a (FIG. 25), the original normal position is restored.

  (7) After confirming that the eccentric meandering of the conveyor belt 8 has disappeared and returned to the normal running state, the push button type switch 55 is operated, and the operation of the conveyor belt 8 and the belt pulley 9 is stopped.

  (8) Next, the meandering detection and meandering prevention device 32 is reversed and attached to the normal position of the pulley mount 13, and the normal operation of the conveyor belt 8 and the belt pulley 9 is resumed.

  With such a simple device, the leakage drop of the soil G is minimized, and early recovery is performed, and the time required for 2 to 3 people for the conventional leak recovery work is about 10 minutes by one person. Can be shortened.

Next, another embodiment of the plate-like body will be described in which the scraper portion is replaceable. The embodiment described here is incorporated in place of the plate-like body 21 (or 51) and the scraper portion 22 (or 52) of the meandering detection and meandering prevention device 2 (or 32). The part which is not carried out is the same structure as the said embodiment.
First, in the embodiment shown in FIGS. 16 to 18, a metal fitting 63 having a U-shaped cross section is screwed to the end of the plate-like body 61 on the side opposite to the pulley with screws B <b> 1, and a scraper is inserted into the U-shaped opening of the metal fitting 63. The part 62 is sandwiched and fixed with a through bolt B2. 16 shows a state in which the scraper portion 62 is assembled to the plate-like body 61, FIG. 17 shows a metal fitting 63 at the end of the plate-like body 61, and FIG. 18 shows a sectional view in the assembled state. And this scraper part 62 is made into FRP resin material, and it is preferable to set it as the board thickness of about 9 mm or more, for example.

  In another embodiment shown in FIGS. 19 and 20, the plate bodies 63A and 63A are welded to the upper and lower surfaces of the end portion of the plate-like body 61A, respectively, and the scraper portion 62A is sandwiched between the plate bodies 63A and 63A. The end portion is abutted against the end portion of the plate-like body 61A and fixed with a through bolt B2. In this case, the thickness of the scraper portion 62A is preferably about 5 to 6 mm, for example.

Further, in the embodiment shown in FIGS. 21 and 22, the end portion of the scraper portion 62A is overlapped with the end portion of the plate-like body 61B and fixed to each other with a bolt B2. In this case as well, the thickness of the scraper portion 62A is preferably about 5 to 6 mm, for example.
If the scraper part can be replaced as in the embodiment shown in FIGS. 16 to 22, it is economical and the replacement work is easy because the scraper part may be replaced when worn.

1 is a configuration perspective view showing a first embodiment of a meandering detection and meandering prevention device of the present invention. It is a side view of FIG. FIG. 3 is a top view of FIGS. 2 is a top view of FIGS. 1 and 2 in which the meander detection and meander prevention device of FIG. It is a top view which shows the plate-shaped body of the meandering detection and meandering prevention apparatus of FIG. It is a side view which shows the principal part A of FIG. It is a figure which shows the switch wiring of the meandering detection and meandering prevention apparatus of FIG. It is a side view of the limit switch attached to the meandering detection and meandering prevention apparatus of FIG. It is a side view of the hose metal fitting periphery which blows away the soil scraped off by the meandering prevention apparatus of 1st Embodiment. It is a simple structure perspective view showing a 2nd embodiment of a meandering detection and meandering prevention device of the present invention. FIG. 11 is a simplified front view of FIG. 10. FIG. 13 is a top view of FIGS. 11 and 12. It is a wiring diagram of the pushbutton switch attached to the meandering detection and meandering prevention apparatus of FIG. It is an attachment side view of the pushbutton type switch attached to the meandering detection and meandering prevention apparatus of FIG. It is a figure which shows attachment of the hose metal fitting attached to the meandering detection and meandering prevention apparatus of FIG. It is a perspective view which shows embodiment of the scraper exchange-type plate-shaped object. It is a perspective view which shows the scraper attachment part of the plate-shaped body of FIG. FIG. 17 is a side sectional view of FIG. 16. It is a perspective view which shows another embodiment of a scraper exchange-type plate-shaped object. FIG. 20 is a side sectional view of FIG. 19. It is a perspective view which shows another embodiment of a scraper exchange-type plate-shaped object. FIG. 22 is a side sectional view of FIG. 21. It is a figure which shows the site | part of the conventional conveyor belt by which the meander detection and meander prevention apparatus of this invention are implemented. It is a side view which shows the conventional conveyor belt of FIG. It is a figure which shows the pop-out prevention tool (skirt) of the soil of the conventional conveyor belt. It is explanatory drawing which shows the state from which soil leaks to the side of a conveyor belt, and adheres to the back surface of a conveyor belt from the anti-projection tool (skirt) of soil. It is explanatory drawing which shows the state which the soil adhering to the back surface of the conveyor belt adhered to the surface of a pulley. It is a figure which shows the state with a normal positional relationship of a conveyor belt, a pulley, and a hopper. It is a figure which shows the abnormal state where the positional relationship of a conveyor belt, a pulley, and a hopper slip | deviates.

Explanation of symbols

B ... Floor Mp ... Motor Sp ... Alarm device 2 ... Meander detection and meander prevention device 8 of first embodiment 8 ... Conveyor belt 9 ... Belt pulley 12 ... Belt conveyor Base 13 ... Pulley base 13a ... Adjustment bolt 21, 51 ... Plate-like body 22, 52 ... Scraper part 22a ... Edge 23 ... Fixed part 23a ... Inclined plate 24 ... -Grip portion 25 ... Limit switch 25a ... Switch rod 26 ... Support portion 28 ... Nut-shaped support tool 29 ... Air hose 30 ... Hose fitting 31 ... Valve 31a ... Nozzle 32 ... Meander detection and meander prevention device 55 of the second embodiment ... Push button switch

Claims (1)

  A plate-like body that is detachably mounted across the frame that holds the drive pulley of the conveyor belt from both sides in the width direction, and horizontally outward from the side edges of the conveyor belt at both ends of the plate-like body With an operation switch attached with an appropriate horizontal distance, an edge-attached scraper part attached in the traveling direction of the plate-like conveyor belt, and a nozzle attached to the lower surface of the scraper part in a detachable manner The hose fitting, an electric wire connecting the operation switch and the motor for driving the conveyor belt, and an electric wire connecting the operation switch and an alarm device for alarming the meandering of the conveyor belt. Conveyor belt meandering detection and meandering prevention device.

Images