JP2018040731A - Apparatus and method for testing belt conveyors - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow for testing belt conveyors in conditions closer to actual usage conditions.SOLUTION: A belt conveyor test device is configured to perform tests on belt conveyors by having a plurality of belt conveyors convey objects. Each of the plurality of belt conveyors receives the objects sent out by an upstream belt conveyor and sends the objects to a downstream belt conveyer. Paths on which the objects are conveyed constitute a closed loop.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a belt conveyor test apparatus and a belt conveyor test method.

  A belt conveyor is generally used to convey raw materials such as ore, lime, and coke. Various techniques have been proposed for evaluating such belt conveyor characteristics such as wear resistance of the belt on which the object to be conveyed is loaded.

  For example, Non-Patent Document 1 discloses a DIN wear test in which a drum around which a polishing cloth is wound is rotated at a constant speed and a test piece is pressed with a specified load to be worn in order to evaluate wear resistance. Yes.

  Further, in Patent Document 1, a wear test simulating the actual usage state of a conveyor belt can be performed. In order to accurately evaluate the wear resistance of the conveyor belt, it is passed over at least a pair of belt wheels. A test conveyor belt forming a closed loop, a drive source for rotating the test conveyor belt through one belt wheel, tension applying means for applying a predetermined tension to the test conveyor belt, and a test conveyor belt There is disclosed a conveyor belt wear test apparatus comprising a vibrating indenter disposed oppositely so that a top portion can contact an outer surface.

JP 2004-020319 A

JIS K 6264-2 “DIN Wear Test”

  By the way, under actual use conditions, the object to be conveyed may be conveyed by a plurality of belt conveyors. In such a case, an impact force due to the fall of the transported object such as ore is applied to the belt of the downstream belt conveyor at the connecting portion where the transported object is sent from the upstream belt conveyor to the downstream belt conveyor. It is done. As a result, the belt may be worn due to an impact caused by the falling transported object. Further, in the actual use state, the conveyance of the object to be conveyed by the belt conveyor continues for a long time.

  Here, according to the DIN abrasion test disclosed in Non-Patent Document 1, it is possible to evaluate the influence of the sliding abrasion of the belt on which the conveyed object is loaded on the belt conveyor. Further, according to the technique disclosed in Patent Document 1, the belt is subjected to repeated impact force along with frictional force using a vibrating indenter, thereby simulating a state in which the belt receives repeated impact force from the conveyed object. Can be evaluated for belt wear. However, with the techniques disclosed in Non-Patent Document 1 and Patent Document 1, it is difficult to reproduce the state of the transported object being dropped onto the belt and the continuation of transporting the transported object for a long time. is there. Therefore, it may be difficult to perform a test on the belt conveyor in a state closer to the actual use state. Thereby, it may be difficult to improve the accuracy of the evaluation in the test relating to the belt conveyor.

  Further, in an actual use state, an object to be conveyed conveyed by the belt conveyor may fall from the belt conveyor without being conveyed to a planned conveyance destination. The amount of falling or falling, which is the amount of the object to be transported falling from the belt conveyor, depends on, for example, the type of belt and the scraping effect of the cleaner that scrapes the object to be transported attached to the belt. Here, it is considered that it is desirable to be able to evaluate the relationship between the type of belt and the scraping effect of the cleaner and the amount of falling ore in a test related to the belt conveyor.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is a novel and improved technique capable of performing a test on a belt conveyor in a state closer to an actual use state. Another object of the present invention is to provide a belt conveyor test apparatus and a belt conveyor test method.

  In order to solve the above problems, according to an aspect of the present invention, there is provided a belt conveyor test apparatus that performs a test related to a belt conveyor by conveying an object to be conveyed by a plurality of belt conveyors, the plurality of belt conveyors. Each of which receives the object to be conveyed sent by a belt conveyor provided on the upstream side, sends the object to be conveyed to a belt conveyor provided on the downstream side, and the path through which the object to be conveyed is conveyed, A belt conveyor test device is provided that forms a closed loop.

  The plurality of belt conveyors may be arranged in a ring shape.

  You may provide the water supply apparatus which supplies water to the said to-be-conveyed object conveyed by these belt conveyors.

  A storage unit is provided below one of the plurality of belt conveyors and stores the object to be transported falling from the one belt conveyor without being sent to the belt conveyor provided on the downstream side. May be.

  You may further provide the weighing | measuring apparatus which weighs the said accommodating part.

  You may provide the chute | shoot which guides the said to-be-conveyed object sent out by one belt conveyor among these belt conveyors to the belt conveyor provided in the downstream.

  Each of the plurality of belt conveyors may include a belt on which the object to be conveyed is loaded and a conveyance surface side roller that supports a conveyance surface that is a surface on which the object to be conveyed is loaded.

  You may provide the cleaner which scrapes off the said to-be-conveyed object adhering to the said conveyance surface of the said belt.

  A belt conveyor test method for performing the test using the belt conveyor test apparatus, which is obtained by a transport process for transporting the object to be transported under different conditions for condition items corresponding to the test, and the transport process. There may be provided a belt conveyor test method including an evaluation step of performing an evaluation corresponding to the test by comparing an index value with respect to the different conditions.

  As described above, according to the present invention, it is possible to perform a test on the belt conveyor in a state closer to the actual use state.

It is a top view which shows an example of schematic structure of the belt conveyor test apparatus which concerns on embodiment of this invention. It is a front view which shows an example of schematic structure of the belt conveyor test apparatus which concerns on the same embodiment. It is a perspective view which shows an example of schematic structure of a falling-off amount measuring apparatus. It is the schematic diagram which showed a mode that the to-be-conveyed object was conveyed by the belt conveyor test apparatus which concerns on the same embodiment. It is the schematic diagram which showed a mode that the to-be-conveyed object was conveyed by the belt conveyor test apparatus which concerns on the same embodiment. It is the schematic diagram which showed a mode that the to-be-conveyed object was conveyed by the belt conveyor test apparatus which concerns on the same embodiment. It is the schematic diagram which showed a mode that the to-be-conveyed object was conveyed by the belt conveyor test apparatus which concerns on the same embodiment. It is the schematic diagram which showed a mode that the to-be-conveyed object was conveyed by the belt conveyor test apparatus which concerns on the same embodiment. It is explanatory drawing which shows an example of the measurement result of the amount of falling rocks. It is explanatory drawing which shows an example of the measurement result of the adhesion amount of the to-be-conveyed object to a belt. It is explanatory drawing which shows an example of the measurement result of the adhesion amount of the to-be-conveyed object to a chute liner.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol. In the present specification and drawings, a plurality of components having substantially the same functional configuration may be distinguished by adding different alphabets after the same reference numeral. However, when it is not necessary to particularly distinguish each of a plurality of constituent elements having substantially the same functional configuration, only the same reference numerals are given.

<1. Configuration of belt conveyor test equipment>
First, with reference to FIGS. 1-3, the structure of the belt conveyor test apparatus 1 which concerns on embodiment of this invention is demonstrated. FIG. 1 is a plan view showing an example of a schematic configuration of a belt conveyor test apparatus 1 according to the present embodiment. The belt conveyor test apparatus 1 according to the present embodiment is a test apparatus that performs a test related to a belt conveyor by conveying an object 80 to be conveyed by a plurality of belt conveyors 10. The transported object 80 is a raw material such as ore, lime, or coke, for example. In addition, the said test is a test for evaluating the characteristic regarding a belt conveyor, and the detail of the said test is mentioned later. Moreover, the number of the belt conveyors 10 shown in FIG. 1 is only an example, and the number of the belt conveyors 10 constituting the belt conveyor test apparatus 1 is not particularly limited.

  In the present embodiment, the path along which the object 80 is transported forms a closed loop. For example, when the plurality of belt conveyors 10 are arranged in a ring shape, the path along which the article 80 is conveyed can form a closed loop. Specifically, as shown in FIG. 1, the belt conveyor test apparatus 1 may be configured by four belt conveyors 10 arranged in a ring. More specifically, in the belt conveyor test apparatus 1, the belt conveyors 10a, 10b, 10c, and 10d are sequentially arranged so that the ends of the belt conveyors 10 are substantially orthogonal to each other in plan view. The conveyed object 80 is conveyed so as to circulate by belt conveyors 10a, 10b, 10c, and 10d that are continuously provided in a ring shape. Thereby, the path along which the object 80 is conveyed forms a closed loop. As described above, in the present embodiment, the closed loop is formed by the path along which the object 80 is conveyed, so that the continuation of the conveyance of the object 80 for a long time is reproduced without replenishing the object 80. It becomes possible to do.

  An arrow D10 illustrated in FIG. 1 indicates a direction in which the object 80 is conveyed. Each of the plurality of belt conveyors 10 receives the object to be conveyed 80 sent out by the belt conveyor 10 provided on the upstream side, and sends the object 80 to be conveyed to the belt conveyor 10 provided on the downstream side. For example, the belt conveyor 10a receives the conveyed product 80 sent by the belt conveyor 10d provided on the upstream side with respect to the belt conveyor 10a, and the conveyed product to the belt conveyor 10b provided on the downstream side with respect to the belt conveyor 10a. Send out 80. As described above, in the present embodiment, by forming a connecting portion where the transported object 80 is sent from the upstream belt conveyor 10 to the downstream belt conveyor 10, the transported object 80 is prevented from dropping onto the belt. It is possible to reproduce a state that is close to reality. In addition, the conveyance speed of the to-be-conveyed object 80 about each of the belt conveyors 10 may be substantially the same.

  Therefore, according to the belt conveyor test apparatus 1 which concerns on this embodiment, it becomes possible to perform the test regarding the belt conveyor in the state nearer an actual use condition. Thereby, the precision of the evaluation in the test regarding a belt conveyor can be improved.

  FIG. 2 is a front view showing an example of a schematic configuration of the belt conveyor test apparatus 1 according to the present embodiment. In FIG. 2, the belt conveyor 10a, which is one of the plurality of belt conveyors 10, and the configuration around the belt conveyor 10a are shown in more detail. As shown in FIG. 2, the belt conveyor 10 a includes a belt 102, a driving pulley 104, a non-driving pulley 106, a roller 108, and a tension adjustment pulley 110. The configuration of the belt conveyors 10b, 10c, and 10d is the same as that of the belt conveyor 10a.

  The belt 102 is a belt-like member that is stretched over the driving pulley 104 and the non-driving pulley 106 to form a closed loop. The outer surface F <b> 10 of the belt 102 corresponds to a transport surface on which the transported object 80 is stacked. When the driving pulley 104 is driven to rotate, the belt 102 travels in a state where it is stretched between the driving pulley 104 and the non-driving pulley 106. The drive pulley 104 is connected to a drive device such as an electric motor and is rotationally driven by the drive device.

  The upper part of the belt 102 travels from the upper part of the non-driving pulley 106 toward the upper part of the driving pulley 104, and the lower part of the belt 102 travels from the lower part of the driving pulley 104 toward the lower part of the non-driving pulley 106. The drive pulley 104 is driven. Further, the conveyed object 80 sent out by the upstream belt conveyor 10d falls on the belt 102 of the belt conveyor 10a. Therefore, the object 80 is conveyed from the non-drive pulley 106 toward the drive pulley 104 as indicated by an arrow D10 in FIG.

  Specifically, the conveyed object 80 sent out by the upstream belt conveyor 10d falls through the chute 40 to the undriven pulley 106 side above the belt 102 of the belt conveyor 10a. A skirt 70 is provided on the top of the belt 102 on the side of the non-driving pulley 106 to prevent the conveyed object 80 that has fallen on the belt 102 from further dropping from the belt 102 due to an impact at the time of dropping. In other words, the skirt 70 prevents the conveyed object 80 from dropping from the belt 102 due to an impact at the time of dropping, without being sent to the belt conveyor 10b provided on the downstream side after dropping on the belt 102. To do. For example, the skirt 70 is provided at a position corresponding to a position where the conveyed object 80 sent out by the upstream belt conveyor 10d in the belt 102 falls. The skirt 70 may be provided so as to extend along the edge of the belt 102 and protrude upward.

  The portion of the belt 102 between the driving pulley 104 and the non-driving pulley 106 may have a slope, as shown in FIG. For example, the slope of the portion of the belt 102 may be 15 °. Further, the portion of the belt 102 may be inclined so that the height on the drive pulley 104 side is higher than that on the non-drive pulley 106 side. In other words, the portion of the belt 102 may be inclined so as to rise from the upstream side toward the downstream side. Since the portion of the belt 102 has the above-described gradient, the object 80 to be conveyed sent by the upstream belt conveyor 10d is received by the belt conveyor 10a and then lifted as the belt 102 travels, thereby driving pulley. It is conveyed to the 104 side. And the to-be-conveyed object 80 is sent out to the belt conveyor 10b provided in the downstream from the edge part P10 by the side of the drive pulley 104 of the belt conveyor 10a.

  The belt conveyor test apparatus 1 may include a chute 40 that guides the article 80 to be conveyed sent by the belt conveyor 10a to the belt conveyor 10b provided on the downstream side. Specifically, the conveyed object 80 sent out from the end portion P <b> 10 on the driving pulley 104 side of the belt conveyor 10 a falls below the chute 40 by colliding with a part of the chute 40. Below the chute 40, the belt 102 of the downstream belt conveyor 10b is located. Thereby, the guide to the belt conveyor 10b provided in the downstream of the to-be-conveyed object 80 is implement | achieved. In FIG. 2, a part of the cross section of the belt 102 of the downstream belt conveyor 10b is schematically shown.

  In the chute 40, a chute liner 402 is provided, for example, as shown in FIG. 1 and FIG. 2 at a position where the conveyed object 80 sent from the end P10 of the belt conveyor 10a collides. Specifically, the chute liner 402 is provided so as to extend in the width direction of the belt 102 with an interval from the drive pulley 104 side of the belt 102. In the chute 40, surfaces opposite to both ends of the drive pulley 104 may be provided on both ends of the chute liner 402. Further, the vertical distance between the end P10 that is the position where the object 80 is sent out and the position where the object 80 falls on the belt conveyor 10b provided on the downstream side may be set to 1600 mm, for example. . The distance corresponds to the falling distance of the conveyed object 80 at the transfer portion between the belt conveyors 10. According to the belt conveyor test apparatus 1, since the chute liner 402 is provided, in the test relating to the belt conveyor, it is possible to evaluate the chute liner 402 as described later.

  The belt conveyor test apparatus 1 may include a cleaner 50 that scrapes off the article 80 to be conveyed that has adhered to the conveyance surface that is the outer surface F <b> 10 of the belt 102. The cleaner 50 is provided in contact with the outer surface F10 of the belt 102. A plurality of cleaners 50 may be provided. The cleaner 50 is used to scrape the transported object 80 that is transported while being attached to the outer surface F10 of the belt 102 without being sent out from the end portion P10 of the belt conveyor 10a to the belt conveyor 10b on the downstream side. For example, as illustrated in FIG. 2, the cleaner 50 may be provided below an end P <b> 10 that is a position where the conveyed object 80 is sent out in a portion of the belt 102 that is hung on the driving pulley 104. The cleaner 50 may be provided at a position corresponding to a portion between the lower portion of the driving pulley 104 and the lower portion of the non-driving pulley 106 of the belt 102.

  The cleaner 50 may have various materials and shapes depending on the installation position. For example, in the case where a plurality of cleaners 50 are provided, the material and shape of each cleaner 50 may be set so that the object 80 can be scraped in stages after passing through the end P10. Specifically, the cleaner 50 provided at a position near the end portion P10 may have a higher roughing function, and the cleaner 50 provided at a position far from the drive pulley 104 may have a higher finishing function.

  A receiving portion 60 may be provided below the cleaner 50. The receiving unit 60 has a function of receiving the conveyed object 80 that has been scraped off by the cleaner 50 and dropped from the belt 102 and sends it to the belt conveyor 10b provided on the downstream side. Thereby, after the conveyed product 80 is scraped off by the cleaner 50, it can prevent falling from the belt conveyor 10a, without being sent to the belt conveyor 10b provided in the downstream. In addition, the part which receives the to-be-conveyed object 80 of the receiving part 60 may be provided with the conveying apparatus which conveys the to-be-conveyed object 80 toward the belt conveyor 10b provided in a downstream, for example. By the said conveying apparatus, the function to send the to-be-conveyed object 80 which fell to the receiving part 60 to the belt conveyor 10b provided in a downstream can be implement | achieved. According to the belt conveyor test apparatus 1, since the cleaner 50 is provided, in the test regarding a belt conveyor, evaluation regarding the cleaner 50 can be performed as described later.

  The roller 108 is a member that supports the belt 102. Specifically, the roller 108 supports the lower surface of the belt 102 at each portion between the driving pulley 104 and the non-driving pulley 106 of the belt 102. More specifically, the roller 108 includes a conveyance surface side roller 108a that supports a conveyance surface that is the outer surface F10 of the lower portion of the belt 102, and an inner surface side roller 108b that supports the inner surface F20 of the upper portion of the belt 102. The conveyance surface side roller 108 a may be provided at a position closer to the non-drive pulley 106 than the cleaner 50. According to the belt conveyor test apparatus 1, since the conveyance surface side roller 108a is provided, in the test regarding the belt conveyor, the evaluation regarding the conveyance surface side roller 108a can be performed as described later.

  The belt conveyor test apparatus 1 includes a storage unit 30 that is provided below the belt conveyor 10a and that stores the object 80 that is not sent to the belt conveyor 10b provided on the downstream side and falls from the belt conveyor 10a. Also good. The storage unit 30 is provided, for example, along the longitudinal direction of the belt conveyor 10 a and has a width that is longer than the width of the belt 102. The length in the longitudinal direction of the storage unit 30 is preferably longer than the length in the longitudinal direction of the belt conveyor 10a, but may be appropriately set in consideration of the arrangement of surrounding members. In the following description, the weight of the transported object 80 stored in the storage unit 30 is referred to as the amount of falling ore. According to the belt conveyor test apparatus 1, since the storage part 30 is provided, the amount of falling ore can be measured by weighing the storage part 30 in which the object 80 is stored. Thereby, in the test regarding a belt conveyor, evaluation about the amount of falling ore can be performed so that it may mention later.

  The belt conveyor test apparatus 1 may include a weighing device for weighing the storage unit 30. Thereby, the amount of falling ore can be measured. For example, the belt conveyor test apparatus 1 may include a falling-off amount measuring apparatus 90 shown in FIG. 3 as such a weighing apparatus. FIG. 3 is a perspective view showing an example of a schematic configuration of the falling ore amount measuring device 90. The falling-off amount measuring device 90 is a device that can measure the falling-out amount by weighing the storage unit 30. As shown in FIG. 3, the falling-off amount measuring device 90 is suspended from a pair of struts 902, a support bar 904 spanned between the pair of struts 902, and a pair of scales 906. The holding part 908 is provided. The holding unit 908 is made of, for example, a pair of rods and holds the storage unit 30. Each of both end portions protruding in the width direction from the storage portion 30 of the holding portion 908 is configured to be suspended via a scale 906. The balance 906 may be a spring balance, for example, and can measure the weight of the object held by the holding unit 908. According to such a falling ore falling amount measuring device 90, the storage unit 30 in which the object 80 is stored is installed in the holding unit 908, and is known from the value obtained by adding the measurement values obtained by the pair of scales 906. The amount of falling ore can be measured by subtracting the weight of the storage unit 30.

  In addition, although the falling-off amount measuring apparatus 90 measures the storage part 30 in the state which suspended and hold | maintained the storage part 30, the measuring method by the falling-off amount measuring apparatus 90 is not limited to the example which concerns. For example, the falling-off amount measuring device 90 may be a weighing device installed on the floor. In this case, the storage unit 30 is weighed in a state where the storage unit 30 is loaded on the upper part of the falling-off amount measuring device 90. Can be done.

  The tension adjustment pulley 110 shown in FIG. 2 is a member for adjusting the tension applied to the belt 102. For example, the tension adjustment pulley 110 is provided in contact with the lower outer surface F10 of the belt 102, and the position can be adjusted in a direction intersecting the outer surface F20. By moving the tension adjusting pulley 110 in the direction of pressing the belt 102, the tension applied to the belt 102 can be adjusted to be increased.

  The belt conveyor test apparatus 1 may include a water supply apparatus 20 that supplies water to an object to be conveyed 80 that is conveyed by a plurality of belt conveyors 10. For example, as shown in FIGS. 1 and 2, the water supply device 20 is provided above the belt 102, and sprays water onto the upper portion of the belt 102, thereby supplying water to the conveyed object 80 loaded on the belt 102. To do. By adjusting the amount of water supplied to the object 80 to be conveyed by the water supply device 20, the amount of water contained in the object 80 can be adjusted as appropriate.

<2. Operation>
Then, with reference to FIGS. 4-8, the conveyance operation of the to-be-conveyed object 80 which the belt conveyor test apparatus 1 performs is demonstrated. 4-8 is the schematic diagram which showed a mode that the to-be-conveyed object 80 was conveyed by the belt conveyor test apparatus 1 which concerns on this embodiment. In FIGS. 4-8, the mode about conveyance of the to-be-conveyed object 80 mainly related to the belt conveyor 10a is shown. In FIGS. 4 to 8, in order to clarify the transport operation of the transported object 80, the amount of the transported object 80 transported as a single unit is smaller than that in FIGS. 1 and 2. The amount of the transported object 80 transported as a single unit is not limited to the amount shown in the drawings.

  First, as shown in FIG. 4, the conveyed object 80 sent out by the belt conveyor 10 d provided on the upstream side falls through the chute 40 to the non-driving pulley 106 side above the belt 102. The belt 102 travels as the driving pulley 104 is driven. Therefore, the transported object 80 falls on the belt 102 and is transported as needed from the stacked portion. Then, as shown in FIG. 5, the conveyed object 80 is conveyed toward the drive pulley 104 while being lifted as the belt 102 travels. Here, when the transported object 80 passes below the water supply apparatus 20, water is supplied from the water supply apparatus 20 to the transported object 80.

  When the conveyed product 80 reaches the end portion P10 on the side of the driving pulley 104 of the belt conveyor 10a, it is scattered from the outer surface F10 of the belt 102 toward the chute liner 402 of the chute 40 as shown in FIG. The scattered transported object 80 collides with the chute liner 402 and then falls onto the belt 102 of the downstream belt conveyor 10 b located below the chute 40. Here, a part of the conveyed product 80 that has reached the end portion P10 on the side of the driving pulley 104 of the belt conveyor 10a may be conveyed in a state of adhering to the outer surface F10 of the belt 102 without being scattered. Note that the amount of the object to be conveyed 80 adhering to the outer surface F10 of the belt 102 is likely to increase as the particle size of the object to be conveyed 80 is lower.

  Then, the conveyed object 80 attached to the belt 102 passes through the end portion P10, and is sequentially scraped off by each cleaner 50 as shown in FIG. Specifically, the transported object 80 attached to the belt 102 is scraped off step by step by each cleaner 50. The conveyed object 80 scraped off from the belt 102 by the cleaner 50 falls to the receiving portion 60 positioned below the cleaner 50 and is sent by the receiving portion 60 to the belt conveyor 10b provided on the downstream side.

  Here, a part of the transported object 80 attached to the belt 102 may be further transported in a state of being attached to the outer surface F <b> 10 of the belt 102 without being scraped off by the cleaner 50. The transported object 80 that has not been scraped off by the cleaner 50 passes through the installation position of the cleaner 50 and then passes through the installation position of the transport surface side roller 108a as shown in FIG. By contacting with 108a, the belt 102 may fall. The transported object 80 dropped from the belt 102 is stored in the storage unit 30 located below the belt conveyor 10a. In addition, the to-be-conveyed object 80 which did not fall by contact with each conveyance surface side roller 108a passes the installation position of each conveyance surface side roller 108a in the state adhering to the belt 102.

  As described above, the object 80 is sequentially conveyed from the upstream belt conveyor 10 to the downstream belt conveyor 10. Further, according to the belt conveyor test apparatus 1 according to the present embodiment, the path through which the object 80 is conveyed forms a closed loop, and therefore the object 80 is conveyed so as to be circulated by the plurality of belt conveyors 10. The

<3. Test method for belt conveyor>
Then, the belt conveyor test method which performs the test regarding a belt conveyor using the belt conveyor test apparatus 1 which concerns on this embodiment mentioned above is demonstrated. The test method compares the index value obtained by the transporting process for transporting the transported object 80 and the transporting process under different conditions for the condition items corresponding to the test by comparing the different conditions. And an evaluation step for performing a corresponding evaluation.

  In the transporting process, for example, after transporting the transported object 80, the conditions may be changed for the condition items corresponding to the test, and the transported object 80 may be transported again. Further, in the transporting process, the transported object 80 may be transported with different conditions for the condition items corresponding to the test for each belt conveyor 10. The conveyed object 80 is continuously conveyed for a predetermined time. The predetermined time is set to a time at which a sufficient index value can be acquired for performing an appropriate evaluation in the evaluation process.

  The test related to the belt conveyor performed by the belt conveyor test apparatus 1 is a test for evaluating the characteristics related to the belt conveyor. The test can include multiple types of tests. In addition, for each of the tests, a condition item that makes the condition different in the transport process, an index value in the evaluation process, and an evaluation target are set. Hereinafter, each of the tests will be specifically described.

[Test for evaluating the effect of belts on the amount of falling ore]
In the test, in the transporting process, the transported object 80 is transported under different conditions for the belt 102, which is a condition item corresponding to the test. For example, in the transporting process, the transported object 80 is transported by applying different types of belts 102 to each belt conveyor 10. Different types of belts 102 may have different materials and surface treatments, for example.

  Further, in the evaluation process, the influence of the belt 102 on the amount of falling ore is evaluated by comparing the amount of falling or falling, which is an index value obtained in the transporting process, for each of the different types of belts 102. For example, by comparing a falling amount when using one belt 102 and a falling amount when using another belt 102 in the transporting process, either one belt 102 or another belt 102 is selected. It can be evaluated whether or not the amount of ore falling increases when it is used.

[Test to evaluate the effect of transported material on the amount of falling ore]
In the test, in the transporting process, the transported object 80 is transported under different conditions for the transported object 80 that is a condition item corresponding to the test. For example, in the transport process, after transporting the transported object 80, the type or moisture content of the transported object 80 is changed, and the transported object 80 is transported again.

  In addition, in the evaluation process, the amount of falling or falling, which is an index value obtained in the transferring process, is compared for each of the transferred objects 80 of different types or amounts of water, so that the effect of the transferred object 80 on the ore falling amount Evaluation is performed. For example, by comparing the amount of falling ore when using one transferred object 80 in the transfer process with the amount of falling or falling when using another transferred object 80, one transferred object 80 and another It can be evaluated whether or not the amount of falling ore is increased when any of the objects to be conveyed 80 is used.

[Test to evaluate the ease of fixing the object to be conveyed to the belt]
In the test, in the transporting process, the transported object 80 is transported under different conditions for the belt 102, which is a condition item corresponding to the test. For example, in the transporting process, the transported object 80 is transported by applying different types of belts 102 to each belt conveyor 10.

  In the evaluation process, the amount of the object 80 fixed to the belt 102, which is an index value obtained in the conveying process, is compared for each of the different types of belts 102, whereby the object 80 to be conveyed to each belt 102 is compared. The ease of sticking is evaluated. For example, when the amount of sticking to the belt 102 when using one belt 102 in the transport process is larger than the amount of sticking to the belt 102 when using another belt 102, compare with other belts 102. Thus, it is evaluated that the object 80 is easily fixed to one belt 102. Note that the object to be conveyed 80 fixed to the belt 102 is less likely to be detached from the belt 102 than the object to be conveyed 80 adhered to the belt 102. The object to be conveyed 80 fixed to the belt 102 does not fall from the belt 102 even by the contact with the conveyance surface side roller 108a described above, and the effect of suppressing the adhesion of an object to the outer surface F10 of the belt 102 may be reduced. Note that the amount of the object 80 to be fixed to the belt 102 can be defined as the weight of the object 80 to be fixed within a predetermined area on the outer surface F10 of the belt 102.

[Test to evaluate the ease with which a transported object adheres to a chute liner]
In the test, in the transport process, the transported object 80 is transported under different conditions with respect to the chute liner 402 that is a condition item corresponding to the test. For example, in the transporting process, the transported object 80 is transported by applying different types of chute liners 402 to each belt conveyor 10. Different types of chute liners 402 may differ in material and surface treatment, for example.

  Further, in the evaluation process, the adherence amount of the object to be conveyed 80 to the chute liner 402, which is an index value obtained in the conveying process, is compared for each of the different types of chute liners 402, so The ease of adhering the conveyed product 80 is evaluated. For example, when the amount of sticking to the chute liner 402 when using one chute liner 402 is larger than the amount of sticking to the chute liner 402 when using another chute liner 402 in the transport process, Compared to the shoot liner 402, it is evaluated that the ease of fixing the conveyed product 80 to one shoot liner 402 is high. Note that the amount of the object to be conveyed 80 fixed to the chute liner 402 can be defined as the weight of the object to be conveyed 80 fixed to the chute liner 402.

  In addition, when the object 80 is applied as a condition item corresponding to the test, after the object 80 is conveyed in the conveying process, the type or moisture amount of the object 80 is changed and the object is conveyed again. The object 80 is conveyed. In the evaluation step, the amount of the object 80 fixed to the chute liner 402, which is an index value obtained in the conveying step, is compared for each of the different types or moisture amounts of the object 80 to be conveyed to the chute liner 402. Evaluation of the ease with which each conveyed object 80 is fixed is performed.

[Test to evaluate the scraping effect of the cleaner]
In the test, in the transporting process, the transported object 80 is transported under different conditions with respect to the cleaner 50 that is a condition item corresponding to the test. For example, in the transport process, the transported object 80 is transported by applying different types of cleaners 50 to the respective belt conveyors 10.

  Further, in the evaluation process, the scraping effect of the cleaner 50 is evaluated by comparing the amount of falling or falling, which is an index value obtained in the conveying process, for each of the different types of cleaners 50. For example, when the amount of falling or falling when using one cleaner 50 in the transporting process is smaller than the amount of falling or falling when using another cleaner 50, compared to the other cleaner 50, It is evaluated that the scraping effect is high.

[Test to evaluate the effect of the transport surface side roller on the amount of falling ore]
In the test, in the transport process, the transported object 80 is transported under different conditions for the transport surface side roller 108a, which is a condition item corresponding to the test. For example, in the transporting process, the transported object 80 is transported by applying different types of transport surface side rollers 108 a to each belt conveyor 10. Different types of transport surface side rollers 108a may be different in material, shape, and dimensions, for example.

  Also, in the evaluation process, the amount of falling or falling, which is an index value obtained in the transfer process, is compared for each of the different types of transfer surface side rollers 108a, thereby evaluating the influence of the transfer surface side roller 108a on the amount of falling ore. Is done. For example, by comparing a falling amount when using one conveyance surface side roller 108a and a falling amount when using another conveyance surface side roller 108a in the conveyance process, one conveyance surface side roller It is possible to evaluate whether the amount of falling ore increases when either 108a or the other conveyance surface side roller 108a is used.

[Test to evaluate belt wear resistance]
In the test, in the transporting process, the transported object 80 is transported under different conditions for the belt 102, which is a condition item corresponding to the test. For example, in the transporting process, the transported object 80 is transported by applying different types of belts 102 to each belt conveyor 10.

  Further, in the evaluation process, the wear resistance of the belt 102 is evaluated by comparing the amount of change in the thickness of the belt 102, which is an index value obtained in the conveying process, for each of the different types of belts 102. For example, when the amount of change in the thickness of the belt 102 when using one belt 102 in the transport process is smaller than the amount of change in the thickness of the belt 102 when using another belt 102, It is evaluated that the wear resistance of one belt 102 is higher than that of the belt 102.

  The various tests have been specifically described above. According to the test method according to the present embodiment, by using the belt conveyor test apparatus 1, in the test related to the belt conveyor in a state closer to the actual use state, the influence of each condition item on each index value is evaluated. be able to. Therefore, the characteristics regarding the belt conveyor can be evaluated with higher accuracy.

  In order to confirm the effect of this invention, the test regarding a belt conveyor was done using the belt conveyor test apparatus 1 mentioned above.

  First, using the belt conveyor test apparatus 1, a test for evaluating the influence of the belt 102 on the amount of falling ore and a test for evaluating the influence of the conveyed product 80 on the amount of falling ore were performed.

  In the test, first, different types of belts 102A, 102B, 102C, and 102D are applied to the belt conveyors 10a, 10b, 10c, and 10d, respectively, and the moisture content of the conveyed product 80A is adjusted to the moisture content A1. The conveyed object 80A was conveyed for a predetermined time. And after measuring the falling-off amount about each belt conveyor 10, the kind or moisture content of the to-be-conveyed object 80 was changed, and the to-be-conveyed object 80 was conveyed again for the predetermined time. By repeating this, the object to be conveyed 80B having the moisture amount B1, the object to be conveyed 80B having the moisture amount B2, the object to be conveyed 80C having the moisture amount C1, the object to be conveyed 80C having the moisture amount C2, and the object 80C having the moisture amount C3. About each of these, the conveyance of the to-be-conveyed object 80 and the measurement of the amount of falling mineral were performed. FIG. 9 shows the measurement results of the amount of falling ore obtained by the test.

  As shown in FIG. 9, according to the test, the amount of falling ore for each of the different types of belts 102 can be obtained with respect to a predetermined pair of transported object 80 and moisture amount. Therefore, the impact of the belt 102 on the amount of falling ore can be evaluated by comparing the amount of falling or falling for each of the different types of belts 102.

  As shown in FIG. 9, according to the test, the falling-off amount for each of the objects 80 to be conveyed having different types or moisture amounts can be obtained for the predetermined type of belt 102. Therefore, the impact of the transported object 80 on the amount of falling ore can be evaluated by comparing the falling amount of the transported object 80 of different types or moisture amounts.

  Subsequently, using the belt conveyor test apparatus 1, a test for evaluating the ease with which the object 80 to be conveyed is fixed to the belt 102 was performed.

  In this test, different types of belts 102A, 102B, 102C, and 102D were applied to the belt conveyors 10a, 10b, 10c, and 10d, respectively, and the object 80 was conveyed for a predetermined time. Then, the amount of the object 80 adhered to each belt 102 was measured. FIG. 10 shows a measurement result of the amount of the object 80 to be fixed to each belt 102 obtained by the test.

  As shown in FIG. 10, according to the test, the amount of the object 80 to be fixed to the belt 102 for each of the different types of belts 102 can be obtained. Therefore, by comparing the amount of the object 80 to be fixed to the belt 102 with respect to each of the different types of belts 102, it is possible to evaluate the ease with which the object 80 is fixed to each belt 102.

  Subsequently, a test was conducted to evaluate the ease with which the object to be transported adheres to the chute liner.

  In the test, first, different types of chute liners 402A, 402B, 402C, and 402D are applied to the belt conveyors 10a, 10b, 10c, and 10d, respectively, and the moisture content of the conveyed product 80B is adjusted to the moisture content B11. The conveyed object 80B was conveyed for a predetermined time. And after measuring the adhesion amount of the to-be-conveyed object 80B to each chute liner 402, the kind or moisture content of the to-be-conveyed object 80 was changed, and the to-be-conveyed object 80 was conveyed again for the predetermined time. By repeating this, the conveyance of the conveyed object 80 and the measurement of the adhering amount were performed for each of the conveyed object 80B having the moisture amount B12, the conveyed object 80C having the moisture amount C11, and the conveyed object 80C having the moisture amount C12. .

  Thereafter, different types of chute liners 402A, 402D, 402E, and 402F were applied to the belt conveyors 10a, 10b, 10c, and 10d by changing the type of chute liner 402 applied to each belt conveyor 10. And in the state which adjusted the moisture content of the to-be-conveyed object 80C to the moisture content C13, the to-be-conveyed object 80C was conveyed for the predetermined time. And after measuring the fixed amount of the to-be-conveyed object 80C to each chute liner 402, the kind or moisture content of the to-be-conveyed object 80 was changed, and the to-be-conveyed object 80 was conveyed again for the predetermined time. By repeating this, the conveyance of the object to be conveyed 80 and the measurement of the amount of fixation were performed for each of the object to be conveyed 80C having the moisture amount C14 and the object to be conveyed 80C having the moisture amount C15. FIG. 11 shows the measurement results of the amount of the object 80 fixed to each chute liner 402 obtained by the test.

  As shown in FIG. 11, according to the test, the transported object 80 to the chute liner 402 for each of the different types of chute liners 402 with respect to a predetermined type of transported object 80 and a moisture amount pair. A fixed amount is obtained. Therefore, by evaluating the amount of adherence of the object 80 to the chute liner 402 for each of the different types of chute liners 402, the ease of adhering the object 80 to the chute liner 402 is evaluated. Can do.

  As shown in FIG. 11, according to the test, the object 80 is fixed to the chute liner 402 for each object 80 having a different type or moisture amount with respect to a predetermined type of belt 102. A quantity is obtained. Therefore, by comparing the amount of adherence of the object 80 to the chute liner 402 for each of the objects 80 to be conveyed having different types or amounts of moisture, the ease of adhering each object 80 to the chute liner 402 can be improved. Evaluation can be made.

  From the above test results, it was confirmed that according to the test method according to the present embodiment, the characteristics relating to the belt conveyor can be evaluated with higher accuracy by using the belt conveyor test apparatus 1.

<4. Summary>
As described above, according to the present embodiment, the path along which the object 80 is transported forms a closed loop. Accordingly, it is possible to reproduce the continuation of the conveyance of the conveyed object 80 for a long time without replenishing the conveyed object 80. Further, according to the present embodiment, each of the plurality of belt conveyors 10 sends the object 80 to the belt conveyor 10 provided on the downstream side. As a result, a transfer portion is formed in which the transported object 80 is sent from the upstream belt conveyor 10 to the downstream belt conveyor 10, thereby reproducing a state closer to the actual fall of the transported object 80 onto the belt. It becomes possible to do. Therefore, according to the belt conveyor test apparatus 1 which concerns on this embodiment, it becomes possible to perform the test regarding the belt conveyor in the state nearer an actual use condition.

  The example in which the configurations of the belt conveyors 10b, 10c, and 10d are the same as the configuration of the belt conveyor 10a has been described above, but the technical scope of the present invention is not limited to such examples. For example, in some belt conveyors 10 of the plurality of belt conveyors 10, a portion between the driving pulley 104 and the non-driving pulley 106 of the belt 102 may descend from the upstream side toward the downstream side, It may be flat. Further, the configuration around each belt conveyor 10 may be different from each other. For example, the water supply device 20, the storage unit 30, or the cleaner 50 may not be provided for some or all of the belt conveyors 10.

  In the above description, an example in which a plurality of belt conveyors 10 are arranged in a ring shape has been described. However, the technical scope of the present invention is not limited to such an example, and a closed loop is formed by a path through which the object 80 is conveyed. If so, the plurality of belt conveyors 10 may have other positional relationships. For example, the plurality of belt conveyors 10 may be provided along substantially the same straight line in plan view, and may be arranged in parallel in the vertical direction.

  In the above description, an example in which a plurality of belt conveyors 10 are connected in a ring shape so that a conveyance path, which is a path through which the object 80 is conveyed, forms a closed loop by the plurality of belt conveyors 10. However, the technical scope of the present invention is not limited to such examples. For example, a part of the conveyance path forming the closed loop may be formed by a conveyance mechanism different from the belt conveyor 10. Specifically, there may be a case where a plurality of belt conveyors 10 are arranged in parallel in the vertical direction, and the transported object 80 is sequentially sent from the belt conveyor 10 positioned on the upper side to the belt conveyor 10 positioned on the lower side. In order to send the article 80 to be conveyed from the belt conveyor 10 positioned at the lowermost position to the belt conveyor 10 positioned at the uppermost position, for example, a bucket conveyor or a screw conveyor may be provided as a conveying mechanism different from the belt conveyor 10. In such a case, a part of the conveyance path forming the closed loop is formed by a conveyance mechanism different from the belt conveyor 10.

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can make various modifications or application examples within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Belt conveyor test apparatus 10, 10a, 10b, 10c, 10d Belt conveyor 20 Water supply apparatus 30 Storage part 40 Chute 50 Cleaner 60 Receiving part 70 Skirt 80 Conveyed object 90 Falling amount measuring apparatus 102, 102A, 102B, 102C, 102D Belt 104 Drive pulley 106 Non-drive pulley 108 Roller 108a Conveying surface side roller 108b Inner surface side roller 110 Tension adjusting pulley 402 Chute liner 902 Support column 904 Support rod 906 Scale 908 Holding unit

Claims (9)

A belt conveyor testing device for carrying out a test related to a belt conveyor by conveying an object to be conveyed by a plurality of belt conveyors,
Each of the plurality of belt conveyors receives the object to be conveyed sent by the belt conveyor provided on the upstream side, and sends the object to be conveyed to the belt conveyor provided on the downstream side,
The path along which the object is transported forms a closed loop.
Belt conveyor testing device.   The belt conveyor testing apparatus according to claim 1, wherein the plurality of belt conveyors are arranged in a ring shape.   The belt conveyor test apparatus according to claim 1, further comprising a water supply device that supplies water to the object to be conveyed that is conveyed by the plurality of belt conveyors.   A storage unit is provided below one of the plurality of belt conveyors and stores the object to be transported falling from the one belt conveyor without being sent to the belt conveyor provided on the downstream side. The belt conveyor test apparatus as described in any one of Claims 1-3.   The belt conveyor test device according to claim 4, further comprising a weighing device for weighing the storage unit.   The belt as described in any one of Claims 1-5 provided with the chute | shoot which guides the said to-be-conveyed object sent out by one belt conveyor of these belt conveyors to the belt conveyor provided in the downstream. Conveyor testing device.   Each of the plurality of belt conveyors includes a belt on which the object to be conveyed is stacked and a conveyance surface side roller that supports a conveyance surface that is a surface on which the object to be conveyed is stacked. The belt conveyor test device according to any one of the above.   The belt conveyor testing apparatus according to claim 7, further comprising a cleaner that scrapes off the object to be conveyed attached to the conveying surface of the belt. A belt conveyor test method for performing the test using the belt conveyor test apparatus according to claim 1,
A transporting step of transporting the object to be transported under different conditions for the condition items corresponding to the test;
An evaluation step for performing an evaluation corresponding to the test by comparing the index value obtained by the transport step with respect to the different conditions;
A belt conveyor test method including:

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