JP2017071497A - Belt conveyor automatic alignment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically adjust a meander to correctly align a belt in a belt conveyor.SOLUTION: A belt conveyor automatic alignment device comprises a revolving stand, which is disposed under a carrier side belt in a belt conveyor A, via a support shaft protruding upward, and which rotates on a plane. The revolving stand supports one or more carrier rollers 1 supporting a back surface of the carrier side belt. A freely rotatable conic roller 10 is provided to outside an outer end of each of the carrier rollers on both sides so that the meandering carrier side belt may cause its side edge to run on the conic roller to rotate. Objects 11 to be detected are provided at a plurality of positions in a circumferential line in the conic roller, to be rotated together with the conic roller. A sensor 14 stationary with regard to the conic roller is disposed in the conic roller to count the number of the objects to be detected passing there. Furthermore, action means is provided, in response to starting of the count of the objects to be detected, to act on the revolving stand to forcibly revolve to a direction for correcting the meandering of the carrier side belt in a cooperative manner.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an automatic alignment device for a belt conveyor using a conical roller with a built-in sensor function.

  In the belt conveyor equipment, in order to load or unload a load from the conveyor, or a belt conveyor to be switched to normal rotation or reverse operation depending on the type of load, transport conditions, equipment management, etc. 2. Description of the Related Art There are already known conveyors that run in cargo handling equipment such as a tripper and an unloader that run across the conveyor.

  When the belt of these belt conveyor facilities meanders, the meandering of the meandering belt is carried out. When the side edge of the meandering belt comes into contact with the guide roller, the meandering of the belt is performed while the roller stand is rotated by the guide roller. This is automatically corrected (Patent Documents 1, 2, and 3).

Japanese Patent No. 4994774 JP 2008-308252 A Japanese Patent No. 4559398

  By the way, in the automatic alignment according to the methods of Patent Documents 1, 2, and 3, when the belt meanders due to the influence of a single load or the like, the side edge of the belt comes into contact with the guide roller, and the guide roller is pushed and released along with this contact. While rotating the roller stand through the arm. Then, the meandering of the belt is automatically corrected as the roller stand turns.

  However, since the self-aligning guide roller is provided at the end of the arm extending in the upward direction from the swivel roller stand, it cannot interfere with surrounding equipment and cannot be used in reverse due to the structure of the automatic aligning idler. It has been difficult to adjust the meandering of the belt (because the direction of use is fixed).

  Also, the carrier side belt repeatedly rises and lowers every time the load is unloaded, so the belt is always unstable. For this reason, the automatic centering idler with a guide roller stabilizes the belt. There were many obstacles.

  In particular, in the belt conveyors operated at extremely low speeds, it is impossible to adjust the meandering by the existing meandering adjustment method of the automatic centering idler, and the automatic centering idler capable of dealing with the belt meandering also has been eagerly desired. .

  Further, in the case of a belt conveyor that does not have a trough shape or a conveyor having an extremely short length, a centering idler that can effectively adjust the meandering has been desired.

In particular, when the side edge of the belt comes into contact with the guide roller during meandering, the arm is then turned, and the roller stand is turned in the meandering alignment direction as the arm turns. To do.
For this reason, there has been a problem that the meandering cannot be corrected promptly (instantly).

  Accordingly, the present invention is to provide an automatic alignment device for a belt conveyor that solves the above-described problems.

  In order to solve the above-mentioned problems, the present invention provides a swivel stand that swivels on a plane via a support shaft that protrudes upward on a lower side of a carrier side belt in a belt conveyor, and the carrier side belt is provided on the swivel stand. A carrier roller that supports the back surface is supported, and a free-rotating conical roller that rotates in accordance with the side edge of the carrier side belt meandering outside the outer ends of the carrier rollers on both sides is provided. And a non-rotating sensor for the cone roller for counting the passage of the detected body is provided in the conical roller, and the detected object is counted. When the operation is started, the operating means interlocks to forcibly turn the turning stand in the meandering correction direction of the carrier side belt. To adopt a configuration provided.

  In addition, a swivel stand that swivels on a plane via a support shaft that protrudes upward is provided below the return side belt of the belt conveyor, and a return roller that supports the surface of the return side belt is supported by the swivel stand. A free-rotating conical roller that rotates as the side edge of the return-side belt meanders on both ends of the return roller is provided, and a detected object that rotates together with the conical roller at dotted positions on the circumference of the conical roller And a non-rotation sensor for the conical roller that counts the passage of the detected body is provided in the conical roller, and when the count of the detected body is further started, the return side belt is in the meandering correction direction. A configuration is provided in which action means that interlocks to turn the swivel stand forcibly is adopted.

  As described above, according to the automatic alignment device for a belt conveyor of the present invention, when the carrier side belt of the belt conveyor meanders for some reason, the side edge of the carrier side belt on the side of the lateral movement (according to meandering) is conical. The conical roller also rotates as it rides on the roller.

  Then, since the detected object that rotates and moves in the conical roller is counted by the stop sensor in the conical roller, the carrier roller is forcedly swiveled by the operation of the action means (this swiveling direction depends on the belt direction). The direction in which the meandering is corrected, that is, the horizontal turning) is performed to automatically align the belt meandering.

  Further, when the return side belt of the belt conveyor meanders for some reason, the side edge of the return side belt on the side of the lateral movement (according to meandering) rides on the conical roller, and the conical roller rotates as it rides.

  Then, the object to be detected that rotates together in the conical roller is counted by the stop sensor in the conical roller, so that the bearing roller swivel stand is forcibly swiveled by the operation of the action means (this swiveling direction is meandering of the belt). In the direction of correction, i.e., horizontal turning), and automatic alignment of the meandering correction of the belt.

  In short, a small amount of the object to be detected per time indicates that the conical roller has a large meandering side, that is, that the belt is meandering to the outside. It can be determined that it is necessary (because the factor of adopting the conical roller is that it changes depending on the position of the meandering belt, but changes).

  As described above, the speed of the detected object (passing rotation speed) changes depending on the position of the meandering belt in contact with the conical roller, and more detailed information can be obtained by increasing the number of detected objects. Since the meander belt can be monitored more finely and information can be quickly transmitted to the action means, there is a specific effect that alignment and response speed are increased.

  That is, the meandering correction response speed of the carrier side belt and the return side belt of the belt conveyor becomes extremely fast.

1 is a partially cutaway front view showing a first embodiment of the present invention. It is an enlarged plan view which shows the principal part same as the above. It is a vertical expansion front view of a conical roller. It is a vertical side view same as the above. It is a partial notch expansion front view which shows the other example of the turning stand of a carrier roller. It is a partially notched enlarged front view showing the turning stand of the return roller of the second embodiment. It is a front view which shows the turning action means of a turning stand. It is a top view same as the above.

  An automatic alignment apparatus for a belt conveyor according to the present invention will be described with reference to the accompanying drawings shown in FIGS.

  As is well known, the belt conveyor A according to the first embodiment includes an endless belt a that extends between a head pulley and a tail pulley (both not shown), and a carrier roller that supports the carrier side of the belt a. 1 (described later) and a return roller 2 (described later) for supporting the return side.

  As shown in FIGS. 1 and 2, the carrier roller 1 has both ends of a horizontal member 3 that crosses below the carrier side of the belt a supported by a conveyor frame 4, and is supported so as to protrude upward from the horizontal member 3. The center portion of the lower surface of the swivel stand 6 is supported by the shaft 5 and the center shaft 8 of the carrier roller 1 is not rotated on the stand 7 protruding upward from the swivel stand 6 (this non-rotated state is well known and detailed). Will be omitted).

  As shown in FIG. 1, the carrier roller 1 has a center and trough-shaped rollers on both sides of the center. However, the present invention is not limited to this, and as shown in FIG. In some cases, as is well known, the rollers on both sides are supported (not shown) on the side swivel stands each having a support shaft.

  Further, the outer end of the carrier roller 1 (this outer end is on each outer end of both side carrier rollers 1 shown in FIG. 1 and on the outer ends of both ends of one carrier roller 1 shown in FIG. 5). On the other hand, a hollow conical roller 10 that rotates freely as the belt a rides is provided (the conical roller 10 has a taper that gradually increases in diameter in a direction opposite to the side edge of the belt a. ).

  Furthermore, at the interspersed positions on the circumferential line in the conical roller 10 (hollow chamber), detected bodies 11 that rotate together with the conical roller 10 are provided.

  As said to-be-detected body 11, the dog is provided in the dot position of the one-side plate surface of the disc 12 which rotates with the conical roller 10, for example.

Further, in the conical roller 10, a non-rotating arm 13 attached to the center shaft 8 is provided, and a sensor 14 for counting the detected object 11 passing through the arm 13 is provided.
For example, a proximity switch is used as the sensor.

Then, along with the meandering of the belt a, when the side edge of the belt a rides on the outer peripheral surface of the conical roller 10 and the conical roller 10 rotates, the detected object 11 rotating together is counted by the sensor 14, and the belt a You can know the meandering.
Of course, with the meandering of the belt a, the turning stand 6 turns horizontally with the support shaft 5 as a fulcrum.

  When the detected object 11 is counted by the sensor 14 accompanying the meandering of the belt a, the action stand B forcibly horizontally turns the swivel stand 6 in the meandering correction (automatic alignment) direction. .

  7 and 8, for example, the rod 21 is driven by a motor driven by receiving a signal from the sensor 14, and the driven rod 21 is advanced and retracted by a female screw and a male screw. A driving body 22 to be driven, a swing piece 25 having one end coupled to the support shaft 5 (in the illustrated case, rotation is transmitted by the square hole 23 and the square shaft 24), and the other end of the swing piece 25 and a rod. In this embodiment, the revolving motion of the rod 21 by the driving body 22 is converted into the rotation of the swing piece 25 so that the swivel stand 6 is reversibly swiveled. A cylinder can also be used for 22, or the object may be achieved by other configurations (for example, the action means C is directly connected to the swivel stand 6 that does not rotate the support shaft 5).

  In short, it is only necessary to receive the signal from the sensor 14 and horizontally turn in the meandering correction direction with the turning stand 6.

  In the figure, 27 is a connecting pin of the rod 21, and 28 is a mounting pin for attaching the end of the driving body 22 to the support member 29.

  In the second embodiment of the present invention, as shown in FIG. 6, both ends of the return roller 2 that supports the return side rear surface of the belt a are flat at the lower end of the support shaft 41 that protrudes downward from the conveyor frame 4. It is supported at both ends of a swivel stand 42 that has been swung so as to be swiveled above.

And the conical roller 10 incorporating the to-be-detected body 11 and the sensor 14 similar to 1st Embodiment is provided in the both ends outer side of the return roller 2. As shown in FIG.
The built-in detection object 11 and the sensor 14 are the same as in the first embodiment, and the description and drawings are omitted.

  When the turn stand 42 turns by contacting the conical roller 10 of the return roller 2 at the side edge of the belt a meandering, the turn stand 42 receives a signal from the sensor 14 in the alignment direction for correcting the meandering of the belt a. Is provided with action means B for horizontally turning.

  The turning action means B of the turning stand 42 is omitted since it is the same as the configuration of FIGS. 7 and 8 of the first embodiment, and the automatic alignment action is also omitted as in the first embodiment.

Then, the meandering of the return belt a is automatically corrected as in the first embodiment.
Reference numeral 51 in the figure denotes guide means such as a long hole and a pin that allow the swivel stand 42 to move up and down in the vertical direction with respect to the conveyor frame 4 and to make a certain degree of swivel.

  In the figure, reference numeral 52 denotes a groove provided for wiring for transmission of the sensor 14. The groove is provided in the pipe 53 connected from the sensor 14, and the wiring is fitted into the groove 52 provided on the center shaft 8.

A Belt conveyor a Belt B Action means 1 Carrier roller 2 Return roller 3 Horizontal material 4 Conveyor frame 5 Support shaft 6 Rotating stand 7 Stand 8 Center shaft 10 Conical roller 11 Detected body 12 Disc 13 Arm 14 Sensor 21 Rod 22 Drive body 23 Square hole 24 Square shaft 25 Oscillating piece 26 Pin 27 Pin 28 Pin 29 Support member 41 Support shaft 42 Rotating stand

Claims (2)

  A swivel stand that swivels on a plane via a support shaft that protrudes upward is provided below the carrier side belt in the belt conveyor, and a carrier roller that supports the back surface of the carrier side belt is supported on the swivel stand. Provided is a free-rotating conical roller that rotates with the side edge of the carrier-side belt meandering outside the outer end of the carrier roller, and is to be detected to rotate together with the conical roller at dotted positions on the circumference of the conical roller. A non-rotating sensor for the conical roller that counts the passage of the detected body in the conical roller, and when the counting of the detected body is started, the meandering correction direction of the carrier side belt The belt conveyor is provided with action means for interlocking to forcibly turn the turning stand. Docho core devices.   A swivel stand that swivels on a plane via a support shaft that protrudes upward is provided below the return side belt of the belt conveyor, and a return roller that supports the surface of the return side belt is supported on the swivel stand. A free-rotating conical roller that rotates as the side edge of the return-side belt meanders on both outer sides of the return belt is provided, and a detected object that rotates with the conical roller is provided at a dotted position on the circumference of the conical roller. Further, a non-rotation sensor for the conical roller that counts the passage of the detected body is provided in the conical roller, and when the counting of the detected body is started, the swivel stand in the meandering correction direction of the return side belt. An automatic centering device for a conveyor, characterized in that it is provided with action means that interlocks so as to forcibly swivel.

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