JP5834486B2 - Conveyor belt evaluation apparatus and evaluation method - Google Patents

Conveyor belt evaluation apparatus and evaluation method Download PDF

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JP5834486B2
JP5834486B2 JP2011111133A JP2011111133A JP5834486B2 JP 5834486 B2 JP5834486 B2 JP 5834486B2 JP 2011111133 A JP2011111133 A JP 2011111133A JP 2011111133 A JP2011111133 A JP 2011111133A JP 5834486 B2 JP5834486 B2 JP 5834486B2
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external force
evaluation sample
temperature
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conveyor belt
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JP2012242200A (en
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弘毅 山▲崎▼
弘毅 山▲崎▼
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Yokohama Rubber Co Ltd
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Description

本発明は、コンベヤベルトの評価装置および評価方法に関し、さらに詳しくは、複雑な装置を用いることなく、実機ラインに近似した条件および促進劣化させるより過酷な条件で、コンベヤベルトの耐温度性および耐外傷性を把握できる評価装置および評価方法に関するものである。   The present invention relates to an evaluation apparatus and an evaluation method for a conveyor belt, and more particularly, without using a complicated apparatus, the temperature resistance and resistance of the conveyor belt under conditions close to the actual machine line and severer conditions that cause accelerated deterioration. The present invention relates to an evaluation apparatus and an evaluation method that can grasp trauma.

高温の焼結鉱などを運搬するコンベヤベルトでは耐熱性を考慮する必要があり、氷点下の低温の運搬物を運搬するコンベヤベルトでは耐寒性(耐脆性)を考慮する必要がある。このようにコンベヤベルトには、運搬物の温度条件や使用現場の温度条件下において実用に耐え得る性能(耐温度性)が求められる。例えば、加熱されたブロックを使用したコンベヤベルトの耐熱性評価方法が提案されている(特許文献1参照)。   It is necessary to consider heat resistance in a conveyor belt that transports high-temperature sintered ore and the like, and it is necessary to consider cold resistance (brittleness resistance) in a conveyor belt that transports a low-temperature freezing material. As described above, the conveyor belt is required to have a performance (temperature resistance) that can be practically used under the temperature condition of the conveyed product and the temperature condition at the site of use. For example, a method for evaluating the heat resistance of a conveyor belt using a heated block has been proposed (see Patent Document 1).

また、コンベヤベルトには通常、シュートを通じて運搬物が投入されるので衝撃力が作用し、また、搬送物によってはコンベヤベルトに顕著な摩耗や傷を発生させる。そのため、使用現場で付与される外力に対して実用に耐え得る性能(耐外傷性)が求められる。   In addition, since a conveyed product is normally put into the conveyor belt through a chute, an impact force acts, and depending on the conveyed product, significant wear and scratches are generated on the conveyor belt. Therefore, performance (trauma resistance) that can withstand practical use against external force applied at the site of use is required.

ここで、例えば、100℃以上の高温の運搬物や0℃以下の低温の搬送物を運搬する場合は、運搬物の温度がコンベヤベルトに与える影響がより大きくなるので、耐外傷性に加えて耐温度性を一段と考慮する必要がある。また、搬送物の温度や雰囲気温度によってもコンベヤベルトの耐外傷性は変化する。そのため、コンベヤベルトを実機ラインに実装した際の性能を予め評価するには、使用現場の温度条件と使用現場で付与される外力とを同時に考慮しなければならない。しかしながら、従来のコンベヤベルトの評価方法では、温度条件と外力(衝撃力等)とを同時に十分考慮していないため、実機ラインに近似した条件でコンベヤベルトの耐温度性および耐外傷性を予め把握することができなかった。さらに実機ラインに近似した条件でコンベヤベルトの耐温度性および耐外傷性を予め把握することができないため、より過酷な環境条件での促進劣化の評価も不可能であった。   Here, for example, when transporting a high-temperature transported object of 100 ° C. or higher or a low-temperature transported object of 0 ° C. or lower, the influence of the temperature of the transported object on the conveyor belt becomes larger, so in addition to the damage resistance It is necessary to further consider temperature resistance. Further, the damage resistance of the conveyor belt varies depending on the temperature of the conveyed product and the ambient temperature. Therefore, in order to evaluate in advance the performance when the conveyor belt is mounted on an actual machine line, it is necessary to consider simultaneously the temperature conditions at the use site and the external force applied at the use site. However, since conventional conveyor belt evaluation methods do not take into account both temperature conditions and external forces (impact force, etc.) at the same time, grasp the temperature resistance and damage resistance of conveyor belts under conditions that are similar to the actual machine line. I couldn't. Furthermore, since the temperature resistance and the damage resistance of the conveyor belt cannot be grasped in advance under the conditions approximate to the actual machine line, it is impossible to evaluate the accelerated deterioration under more severe environmental conditions.

特開2010−230520号公報JP 2010-230520 A

本発明の目的は、複雑な装置を用いることなく、実機ラインに近似した条件および促進劣化させるより過酷な条件でのコンベヤベルトの耐外傷性および耐温度性を予め把握できるコンベヤベルトの評価装置および評価方法を提供することにある。   SUMMARY OF THE INVENTION An object of the present invention is to provide an evaluation apparatus for a conveyor belt that can grasp in advance the damage resistance and temperature resistance of a conveyor belt under conditions that are close to an actual machine line and more severe conditions that cause accelerated deterioration without using a complicated apparatus, and To provide an evaluation method.

上記目的を達成するため本発明のコンベヤベルトの評価装置は、コンベヤベルトの評価サンプルが架け回される一対のプーリと、前記評価サンプルのテンションを調整するテンション調整部と、前記評価サンプルの走行速度を調整する速度調整部と、前記評価サンプルが収容される恒温ケースと、前記評価サンプルの搬送面に外力付与体を繰り返し接触させる外力付与手段と、前記恒温ケースの内部温度および前記外力付与体の温度を調整する温度コントローラとを備えて、前記外力付与手段が、任意の質量に調整できる錘を有して、先端形状が可変である外力付与体と、この外力付与体を繰り返し自由落下させる落下機構と、復元機構とからなり、この外力付与体を先端から前記評価サンプルの搬送面に繰り返し落下させる構成にして、前記評価サンプルに落下させた前記外力付与体を前記評価サンプルとともに走行方向に所定長さ移動させた後に上方移動させて、前記復元機構により前記走行方向と反対方向に前記所定長さ移動させて前記外力付与体を落下前の位置に戻して前記外力付与体の繰り返し自由落下を行って前記評価サンプルの耐外傷性および耐温度性を評価することを特徴とする。
本発明の別のコンベヤベルトの評価装置は、コンベヤベルトの評価サンプルが架け回される一対のプーリと、前記評価サンプルのテンションを調整するテンション調整部と、前記評価サンプルの走行速度を調整する速度調整部と、前記評価サンプルが収容される恒温ケースと、前記評価サンプルの搬送面に外力付与体を繰り返し接触させる外力付与手段と、前記恒温ケースの内部温度および前記外力付与体の温度を調整する温度コントローラとを備えて、前記外力付与手段が、外周面形状が可変である転動ローラからなる外力付与体と、この外力付与体を独立して回転駆動させる回転部とからなり、この外力付与体の外周面を前記評価サンプルの搬送面に接触させつつ、転動させる構成にして、前記評価サンプルの搬送面に接触する際の前記外力付与体の外周面の回転移動方向が前記搬送面の走行方向と反対方向になるようにして前記評価サンプルの耐外傷性および耐温度性を評価することを特徴とする。
本発明のさらに別のコンベヤベルトの評価装置は、コンベヤベルトの評価サンプルが架け回される一対のプーリと、前記評価サンプルのテンションを調整するテンション調整部と、前記評価サンプルの走行速度を調整する速度調整部と、前記評価サンプルが収容される恒温ケースと、前記評価サンプルの搬送面に外力付与体を繰り返し接触させる外力付与手段と、前記恒温ケースの内部温度および前記外力付与体の温度を調整する温度コントローラとを備えて、前記外力付与手段が、外周面形状が可変である回転自在に軸支された転動ローラからなる外力付与体と、この外力付与体の回転にブレーキをかける回転部とからなり、この外力付与体の外周面を前記評価サンプルの搬送面に接触させて前記回転部によりブレーキをかけつつ、この外力付与体を転動させる構成にして前記評価サンプルの耐外傷性および耐温度性を評価することを特徴とする。
In order to achieve the above object, a conveyor belt evaluation apparatus according to the present invention includes a pair of pulleys around which an evaluation sample of the conveyor belt is wound, a tension adjusting unit that adjusts the tension of the evaluation sample, and a traveling speed of the evaluation sample. A constant temperature case for accommodating the evaluation sample, external force applying means for repeatedly bringing the external force applying body into contact with the transport surface of the evaluation sample, internal temperature of the constant temperature case, and the external force applying body A temperature controller that adjusts the temperature, and the external force applying means has a weight that can be adjusted to an arbitrary mass, the external force applying body having a variable tip shape, and a drop that repeatedly drops the external force applying body freely And an external force applying body that repeatedly drops from the tip onto the transfer surface of the evaluation sample. The external force imparting body dropped on the evaluation sample is moved together with the evaluation sample by a predetermined length in the traveling direction, and then moved upward, and is moved by the restoring mechanism by the predetermined length in the direction opposite to the traveling direction. The imparting body is returned to the position before dropping, and the external force imparting body is repeatedly and freely dropped to evaluate the damage resistance and temperature resistance of the evaluation sample.
Another evaluation apparatus for a conveyor belt according to the present invention includes a pair of pulleys around which an evaluation sample of the conveyor belt is wound, a tension adjusting unit that adjusts the tension of the evaluation sample, and a speed that adjusts the traveling speed of the evaluation sample. An adjustment unit, a constant temperature case in which the evaluation sample is accommodated, an external force applying means for repeatedly bringing an external force applying body into contact with the transport surface of the evaluation sample, an internal temperature of the constant temperature case, and a temperature of the external force applying body are adjusted. A temperature controller, and the external force applying means includes an external force applying body composed of a rolling roller whose outer peripheral surface shape is variable, and a rotating portion that independently rotates and drives the external force applying body. The outer peripheral surface of the body is configured to roll while contacting the transport surface of the evaluation sample, and when contacting the transport surface of the evaluation sample, Rotational movement direction of the outer peripheral surface of the force applying member is characterized to evaluate the external damage resistance and temperature resistance of the evaluation sample so that in a direction opposite to the traveling direction of the conveying surface.
Still another conveyor belt evaluation apparatus according to the present invention adjusts the traveling speed of the evaluation sample, a pair of pulleys around which the evaluation sample of the conveyor belt is wound, a tension adjusting unit that adjusts the tension of the evaluation sample, and A speed adjusting unit, a constant temperature case in which the evaluation sample is accommodated, an external force applying means for repeatedly bringing the external force applying body into contact with the transport surface of the evaluation sample, and adjusting the internal temperature of the constant temperature case and the temperature of the external force applying body The external force applying means includes an external force applying body that is a rotatably supported rolling roller whose outer peripheral surface shape is variable, and a rotating portion that brakes the rotation of the external force applying body. The outer peripheral surface of the external force imparting body is brought into contact with the transport surface of the evaluation sample and braked by the rotating portion, In the configuration in which roll imparting body and evaluating the external damage resistance and temperature resistance of the evaluation sample.

また、本発明のコンベヤベルトの評価方法は、コンベヤベルトの評価サンプルを恒温ケース内で一対のプーリに架け回し、この評価サンプルを予め設定された所定のテンションで張設するとともに、予め設定された所定の速度で走行させた状態にして、この状態の評価サンプルの搬送面に外力付与体を繰り返し接触させ、かつ、前記恒温ケースの内部温度および外力付与体の温度を温度コントローラにより予め設定された温度に調整し、前記外力付与体は、任意の質量に調整できる錘を有して先端形状が可変であり、この外力付与体を先端から前記評価サンプルの搬送面に繰り返し自由落下させ、前記評価サンプルに落下させた前記外力付与体を前記評価サンプルとともに走行方向に所定長さ移動させた後に上方移動させて、復元機構により前記走行方向と反対方向に前記所定長さ移動させて前記外力付与体を落下前の位置に戻して前記外力付与体の繰り返し自由落下を行って前記評価サンプルの耐外傷性および耐温度性を評価することを特徴とする。
本発明の別のコンベヤベルトの評価方法は、コンベヤベルトの評価サンプルを恒温ケース内で一対のプーリに架け回し、この評価サンプルを予め設定された所定のテンションで張設するとともに、予め設定された所定の速度で走行させた状態にして、この状態の評価サンプルの搬送面に外力付与体を繰り返し接触させ、かつ、前記恒温ケースの内部温度および外力付与体の温度を温度コントローラにより予め設定された温度に調整し、前記外力付与体は、外周面形状が可変である転動ローラであり、この外力付与体を独立して回転駆動させて、その外周面を前記評価サンプルの搬送面に接触させつつ転動させて、前記評価サンプルの搬送面に接触する際の前記外力付与体の外周面の回転移動方向が前記搬送面の走行方向と反対方向になるようにして前記評価サンプルの耐外傷性および耐温度性を評価することを特徴とする。
本発明のさらに別のコンベヤベルトの評価方法は、コンベヤベルトの評価サンプルを恒温ケース内で一対のプーリに架け回し、この評価サンプルを予め設定された所定のテンションで張設するとともに、予め設定された所定の速度で走行させた状態にして、この状態の評価サンプルの搬送面に外力付与体を繰り返し接触させ、かつ、前記恒温ケースの内部温度および外力付与体の温度を温度コントローラにより予め設定された温度に調整し、前記外力付与体は、外周面形状が可変である回転自在に軸支された転動ローラであり、その外周面を前記評価サンプルの搬送面に接触させて前記外力付与体の回転にブレーキをかけつつ転動させて前記評価サンプルの耐外傷性および耐温度性を評価することを特徴とする。
In the conveyor belt evaluation method of the present invention, the conveyor belt evaluation sample is wound around a pair of pulleys in a thermostatic case, and the evaluation sample is stretched with a predetermined tension set in advance. In a state of running at a predetermined speed, the external force imparting body is repeatedly brought into contact with the conveyance surface of the evaluation sample in this state, and the internal temperature of the constant temperature case and the temperature of the external force imparting body are preset by a temperature controller. Adjusting to temperature, the external force imparting body has a weight that can be adjusted to an arbitrary mass, and the tip shape is variable. The external force imparting body is repeatedly freely dropped from the tip onto the transport surface of the evaluation sample, and the evaluation is performed. The external force imparting body dropped on the sample is moved together with the evaluation sample by a predetermined length in the running direction, and then moved upward, by a restoring mechanism. Serial running direction and said predetermined moving length in the opposite direction assess the external damage resistance and temperature resistance of the evaluation sample is repeatedly free fall of the external force applying member is returned to a position before dropping the external force application member It is characterized by doing.
According to another conveyor belt evaluation method of the present invention, a conveyor belt evaluation sample is wound around a pair of pulleys in a thermostatic case, and the evaluation sample is stretched with a predetermined tension set in advance. In a state of running at a predetermined speed, the external force imparting body is repeatedly brought into contact with the conveyance surface of the evaluation sample in this state, and the internal temperature of the constant temperature case and the temperature of the external force imparting body are preset by a temperature controller. The external force imparting body is a rolling roller that is adjusted to the temperature, and the outer peripheral surface shape is variable. The external force imparting body is driven to rotate independently, and the outer peripheral surface is brought into contact with the transport surface of the evaluation sample. The rotational movement direction of the outer peripheral surface of the external force imparting body when it is rolled while contacting the conveyance surface of the evaluation sample is opposite to the traveling direction of the conveyance surface. And evaluating the external damage resistance and temperature resistance of the evaluation sample.
Another evaluation method for a conveyor belt according to the present invention is that a conveyor belt evaluation sample is wound around a pair of pulleys in a thermostatic case, and the evaluation sample is stretched with a predetermined tension set in advance. In this state, the external force applying body is repeatedly brought into contact with the transport surface of the evaluation sample in this state, and the internal temperature of the constant temperature case and the temperature of the external force applying body are preset by a temperature controller. The external force imparting body is a rotatable roller that is rotatably supported with a variable outer peripheral surface shape, and the external force imparting body is brought into contact with the transport surface of the evaluation sample. The evaluation sample is evaluated for trauma resistance and temperature resistance by rolling while applying a brake.

本発明によれば、評価サンプルを恒温ケース内で、使用現場に応じた所定のテンションで一対のプーリに架け回して、使用現場に応じた所定の走行速度で走行させることができる。そして、走行している状態の評価サンプルの搬送面に外力付与体を繰り返し接触させることにより、評価サンプルに所望の外力を付与することができる。しかも、その際に、恒温ケースの内部温度および外力付与体の温度を、温度コントローラによって、使用現場に応じた予め設定された温度に調整できる。これにより、複雑な装置を用いることなく、実機ラインに近似した条件で評価サンプルの耐外傷性および耐温度性を予め把握できる。また、恒温ケースの内部温度を適切に設定することで、評価サンプルの耐外傷性を、より過酷な条件で促進評価することも可能になり、評価時間の短縮化に寄与する。   According to the present invention, an evaluation sample can be run around a pair of pulleys in a constant temperature case with a predetermined tension according to the use site and at a predetermined travel speed according to the use site. A desired external force can be applied to the evaluation sample by repeatedly bringing the external force applying body into contact with the transport surface of the evaluation sample in a traveling state. In addition, at that time, the internal temperature of the thermostatic case and the temperature of the external force imparting body can be adjusted to a preset temperature corresponding to the use site by the temperature controller. Thereby, the trauma resistance and temperature resistance of the evaluation sample can be grasped in advance under the conditions approximate to the actual machine line without using a complicated apparatus. In addition, by appropriately setting the internal temperature of the thermostatic case, it is possible to promote and evaluate the damage resistance of the evaluation sample under more severe conditions, which contributes to shortening of the evaluation time.

本発明の上述した第1の評価装置では、先端形状をベルト搬送物に応じた形状にして、その外力付与体を先端から、走行している評価サンプルの搬送面に対して、使用現場と同様に繰り返し自由落下させて衝撃を与えることができる。これにより、評価サンプルの耐衝撃性および耐温度性を把握できる。 In the above-described first evaluation apparatus of the present invention , the tip shape is made to be a shape corresponding to the belt transported object, and the external force imparting body from the tip to the transport surface of the evaluation sample that is running is the same as the use site. It is possible to give a shock by repeatedly falling freely. Thereby, the impact resistance and temperature resistance of the evaluation sample can be grasped.

本発明の上述した第2、第3の評価装置では、転動ローラの外周面形状をベルト搬送物に応じた形状にして、この転動ローラの外周面を走行している評価サンプルの搬送面に対して、使用現場と同様に繰り返し接触させて外力を与えることができる。これにより、評価サンプルの耐摩耗性および耐温度性を把握できる。 In the above-described second and third evaluation apparatuses of the present invention, the shape of the outer peripheral surface of the rolling roller is made to be a shape corresponding to the belt conveyed object, and the conveying surface of the evaluation sample running on the outer peripheral surface of the rolling roller. On the other hand, the external force can be applied by repeatedly making contact in the same manner as at the site of use. Thereby, the abrasion resistance and temperature resistance of an evaluation sample can be grasped.

本発明の上述した第1の評価方法では、先端形状をベルト搬送物に応じた形状にして、その外力付与体を先端から、走行している評価サンプルの搬送面に対して、使用現場と同様に繰り返し自由落下させて衝撃を与えることができる。これにより、評価サンプルの耐衝撃性および耐温度性を把握できる。 In the above-described first evaluation method of the present invention , the tip shape is changed to a shape corresponding to the belt transported object, and the external force imparting body is moved from the tip to the transport surface of the evaluation sample that is running, similar to the use site. It is possible to give a shock by repeatedly falling freely. Thereby, the impact resistance and temperature resistance of the evaluation sample can be grasped.

本発明の上述した第2、第3の評価方法では、転動ローラの外周面形状をベルト搬送物に応じた形状にして、この転動ローラの外周面を走行している評価サンプルの搬送面に対して、使用現場と同様に繰り返し接触させて外力を与えることができる。これにより、評価サンプルの耐摩耗性および耐温度性を把握できる。 In the above-described second and third evaluation methods of the present invention, the outer peripheral surface of the rolling roller has a shape corresponding to the belt conveyed object, and the conveying surface of the evaluation sample running on the outer peripheral surface of the rolling roller. On the other hand, the external force can be applied by repeatedly making contact in the same manner as at the site of use. Thereby, the abrasion resistance and temperature resistance of an evaluation sample can be grasped.

前記評価サンプルの搬送面に複数の凹部を設け、これら凹部に異なる仕様の評価ゴムを嵌め込むことにより、複数の異なる仕様の評価ゴムの耐外傷性および耐温度性を同時に評価することもできる。この場合、複数種類の仕様の評価ゴムを、一度に評価できるので評価時間の短縮化を図ることができる。   By providing a plurality of recesses on the transport surface of the evaluation sample and fitting evaluation rubbers having different specifications into these recesses, it is possible to simultaneously evaluate the damage resistance and temperature resistance of the evaluation rubbers having different specifications. In this case, since evaluation rubbers having a plurality of types of specifications can be evaluated at once, the evaluation time can be shortened.

本発明のコンベヤベルトの評価装置を例示する全体概要図である。1 is an overall schematic diagram illustrating a conveyor belt evaluation apparatus of the present invention. 別の評価装置を例示する全体概要図である。It is a whole schematic diagram which illustrates another evaluation apparatus. コンベヤベルトの評価サンプルを例示する長手方向断面図である。It is a longitudinal section which illustrates the evaluation sample of a conveyor belt. コンベヤベルトの評価サンプルの変形例を示す平面図である。It is a top view which shows the modification of the evaluation sample of a conveyor belt. 図4のA−A断面図である。It is AA sectional drawing of FIG.

以下、本発明のコンベヤベルトの評価装置および方法を図に示した実施形態を参照しながら説明する。   Hereinafter, the conveyor belt evaluation apparatus and method of the present invention will be described with reference to the embodiments shown in the drawings.

図1に例示する本発明のコンベヤベルトの評価装置1(以下、評価装置1という)は、コンベヤベルトの評価サンプル14の耐衝撃性および耐温度性を動的に評価するものであり、ベース2上に配置された支柱3a、4aによって支持された一対のプーリ3、4を有している。一方は駆動プーリ3であり、他方は従動プーリ4である。一対のプーリ3、4には評価サンプル14が架け回される。   A conveyor belt evaluation apparatus 1 (hereinafter referred to as an evaluation apparatus 1) of the present invention illustrated in FIG. 1 dynamically evaluates impact resistance and temperature resistance of an evaluation sample 14 of a conveyor belt. It has a pair of pulleys 3 and 4 supported by support | pillars 3a and 4a arrange | positioned on the top. One is a driving pulley 3 and the other is a driven pulley 4. An evaluation sample 14 is wound around the pair of pulleys 3 and 4.

評価サンプル14は図3に例示するように、帆布やスチールコード等からなる心体17と、この心体17上下に積層された上カバーゴム15および下カバーゴム16とを加硫して一体化したものであり、環状に形成されている。コンベヤベルトの仕様に応じて、評価サンプル14には補強層などのその他の構成部材が埋設される。   As illustrated in FIG. 3, the evaluation sample 14 is formed by vulcanizing a core body 17 made of a canvas, a steel cord, or the like, and an upper cover rubber 15 and a lower cover rubber 16 laminated above and below the core body 17. And is formed in a ring shape. Depending on the specifications of the conveyor belt, the evaluation sample 14 is embedded with other components such as a reinforcing layer.

駆動プーリ3を支持する支柱3aはベース2に固定されている。駆動プーリ3の回転駆動速度は速度調整部3bによって、使用現場に応じた予め設定された所定の速度に調整される。即ち、この速度調整部3bにより、一対のプーリ3、4に架け回される評価サンプル14の走行速度が調整される。   A column 3 a that supports the drive pulley 3 is fixed to the base 2. The rotational driving speed of the driving pulley 3 is adjusted to a predetermined speed set in advance according to the use site by the speed adjusting unit 3b. That is, the traveling speed of the evaluation sample 14 routed around the pair of pulleys 3 and 4 is adjusted by the speed adjusting unit 3b.

従動プーリ4を支持する支柱4aは、ベース2上に固定されたスライドレール4bの上に配置されている。支柱4aは、スライドレール4bの上をレール長手方向(図1では左右方向)に自由にスライドでき、所望の位置で固定できるようになっている。即ち、このスライドレール4bが、一対のプーリ3、4に架け回される評価サンプル14のテンションを調整するテンション調整部として機能する。評価サンプル14は、使用現場に応じた予め設定された所定のテンションで張設され、そのテンションは、支柱4aに接続されたロードセル5により検知される。   The column 4 a that supports the driven pulley 4 is disposed on a slide rail 4 b that is fixed on the base 2. The column 4a can freely slide on the slide rail 4b in the rail longitudinal direction (left and right direction in FIG. 1) and can be fixed at a desired position. That is, the slide rail 4 b functions as a tension adjusting unit that adjusts the tension of the evaluation sample 14 that is wound around the pair of pulleys 3 and 4. The evaluation sample 14 is stretched with a predetermined tension set in advance according to the use site, and the tension is detected by the load cell 5 connected to the column 4a.

尚、従動プーリ4と駆動プーリ3とを入れ替えて、従動プーリ4を支持する支柱4aをベース2に固定して、駆動プーリ3を支持する支柱3aを、ベース2上にスライド可能に設置してもよい。   In addition, the driven pulley 4 and the driving pulley 3 are exchanged, the support column 4a that supports the driven pulley 4 is fixed to the base 2, and the support column 3a that supports the driving pulley 3 is slidably installed on the base 2. Also good.

さらに、評価装置1は、評価サンプル14が収容される恒温ケース6と、評価サンプル14の搬送面15aに外力付与体8を繰り返し接触させる外力付与手段と、恒温ケース6の内部温度および外力付与体8の温度を任意に調整できる温度コントローラ13とを備えている。恒温ケース6の内部温度および外力付与体8の温度は温度コントローラ13により、使用現場に応じた予め設定された温度に調整される。例えば、電熱体により外力付与体8および恒温ケース6内部を加温する。また、冷媒を流通させることにより外力付与体8および恒温ケース6内部を冷却する。   Furthermore, the evaluation apparatus 1 includes a constant temperature case 6 in which the evaluation sample 14 is accommodated, an external force applying unit that repeatedly brings the external force applying body 8 into contact with the transport surface 15a of the evaluation sample 14, and the internal temperature and external force applying body of the constant temperature case 6. And a temperature controller 13 that can arbitrarily adjust the temperature of 8. The temperature of the constant temperature case 6 and the temperature of the external force applying body 8 are adjusted by the temperature controller 13 to a preset temperature corresponding to the use site. For example, the external force applying body 8 and the constant temperature case 6 are heated by an electric heater. Further, the external force applying body 8 and the constant temperature case 6 are cooled by circulating the refrigerant.

この実施形態では、質量を任意に調整できる錘9を有し、先端形状の異なる複数の落下アタッチメント7a〜7eを着脱できる外力付与体8を備えている。外力付与手段は、この外力付与体8と、外力付与体8を繰り返し自由落下させるカムシャフト10とで構成されている。錘9(外力付与体8)の質量は、ベルト搬送物の実機でのシュート落差より計算される衝撃性に応じて予め設定された質量に調整される。   In this embodiment, an external force imparting body 8 having a weight 9 capable of arbitrarily adjusting the mass and capable of attaching / detaching a plurality of drop attachments 7a to 7e having different tip shapes is provided. The external force applying means is composed of the external force applying body 8 and a camshaft 10 that allows the external force applying body 8 to repeatedly fall freely. The mass of the weight 9 (external force imparting body 8) is adjusted to a mass set in advance according to the impact property calculated from the chute drop in the actual machine of the belt conveyance object.

落下アタッチメント7の先端形状は、使用現場の搬送物の形状に近似したものを用いる。例示した落下アタッチメント7a、7bの先端は三角形状であり、落下アタッチメント7aの方がより先端が鋭角になっている。落下アタッチメント7c、7d、7eの先端はそれぞれ、凹凸形状、円弧状、平面状である。このようにベルト搬送物に応じて、落下アタッチメント7の先端は種々の形状にすることができる。   The tip shape of the drop attachment 7 is similar to the shape of the transported object at the use site. The tips of the illustrated drop attachments 7a and 7b have a triangular shape, and the tip of the drop attachment 7a has a sharper angle. The tips of the drop attachments 7c, 7d, and 7e have an uneven shape, an arc shape, and a planar shape, respectively. As described above, the tip of the drop attachment 7 can have various shapes according to the belt conveyance.

落下アタッチメント7は耐久性等を考慮して、例えば、鋼等の金属製にする。或いは、落下アタッチメント7の搬送面15aに接触する部分を、搬送物と同じ材質にすることもできる。例えば、搬送物が鉱石の場合は、落下アタッチメント7の先端を鉱石で形成する。   The drop attachment 7 is made of metal such as steel in consideration of durability and the like. Or the part which contacts the conveyance surface 15a of the drop attachment 7 can also be made into the same material as a conveyed product. For example, when the conveyed product is ore, the tip of the drop attachment 7 is formed of ore.

回転駆動されるカムシャフト10の外周面には係合突起10aが突設されている。外力付与体8のシャフト外周面には係合突起8aが突設されている。カムシャフト10が回転して、互いの係合突起8a、10aが係合すると外力付与体8が上方移動し、互いの係合が解除されると、外力付与体8は自由落下する。したがって、カムシャフト10の回転が続くことにより、外力付与体8がその先端から評価サンプル14の搬送面15aに繰り返し自由落下する。   An engaging protrusion 10a is provided on the outer peripheral surface of the camshaft 10 that is rotationally driven. On the outer peripheral surface of the shaft of the external force imparting body 8, an engaging projection 8a is provided so as to project. When the camshaft 10 rotates and the engagement protrusions 8a and 10a engage with each other, the external force applying body 8 moves upward, and when the mutual engagement is released, the external force applying body 8 falls freely. Accordingly, as the rotation of the camshaft 10 continues, the external force imparting body 8 repeatedly falls freely from the tip thereof onto the transport surface 15a of the evaluation sample 14.

評価サンプル14の耐衝撃性および耐温度性を評価する際には、恒温ケース6内で一対のプーリ3、4に架け回す。そして、評価サンプル14と同じ仕様のコンベヤベルトが使用される使用現場と同じテンションで張設する。   When evaluating the impact resistance and temperature resistance of the evaluation sample 14, the evaluation sample 14 is wound around the pair of pulleys 3 and 4 in the thermostatic case 6. And it tensions with the same tension as the use site where the conveyor belt of the same specification as the evaluation sample 14 is used.

次いで、使用現場と同じ速度で走行させた評価サンプル14の搬送面15aに対して、外力付与体8を先端の落下アタッチメント7から、繰り返し自由落下させて衝突させる。落下アタッチメント7の先端形状は、使用現場で搬送する搬送物と近似したものを使用し、外力付与体8の質量、落下高さおよび落下サイクルは、使用現場と同じ条件または計算される負荷条件に応じて任意に設定する。   Next, the external force imparting body 8 is repeatedly freely dropped from the tip attachment 7 to collide against the transport surface 15a of the evaluation sample 14 that has been run at the same speed as the site of use. The tip shape of the drop attachment 7 is similar to the transported object to be transported at the use site, and the mass, drop height, and drop cycle of the external force imparting body 8 are the same as the use site or the calculated load conditions. Set as desired.

自由落下して搬送面15aに接触した外力付与体8は、カムシャフト10によって上方移動されるまでの間、評価サンプル14とともに走行方向に移動する。そのため、この走行方向に移動した距離だけ、外力付与体8を落下前の位置に戻す復元機構を設ける。この実施形態では、回転するカムシャフト10によって、搬送面15aに自由落下した外力付与体8が、上方向および評価サンプル14の反走行方向に移動させられて落下前の位置に戻るようになっている。 The external force imparting body 8 that freely falls and contacts the conveyance surface 15 a moves in the traveling direction together with the evaluation sample 14 until it is moved upward by the camshaft 10. Therefore, a restoring mechanism is provided for returning the external force applying body 8 to the position before dropping by the distance moved in the traveling direction. In this embodiment, the rotating camshaft 10 causes the external force imparting body 8 that has been freely dropped to the transport surface 15a to be moved in the upward direction and the anti-running direction of the evaluation sample 14 to return to the position before the fall. Yes.

評価の際には、恒温ケース6の内部温度および落下アタッチメント7の温度を温度コントローラ13により、使用現場と同じ条件に設定する。即ち、恒温ケース6の温度は使用現場の雰囲気温度と同じ温度、落下アタッチメント7は使用現場で搬送する搬送物と同じ温度に、それぞれ別個に温度調整する。恒温ケース6の内部温度は例えばマイナス70℃〜プラス300℃程度、落下アタッチメント7の温度は例えばマイナス70℃〜プラス600℃程度に設定される。   At the time of evaluation, the internal temperature of the constant temperature case 6 and the temperature of the drop attachment 7 are set to the same conditions as the site of use by the temperature controller 13. That is, the temperature of the constant temperature case 6 is separately adjusted to the same temperature as the ambient temperature at the use site, and the drop attachment 7 is adjusted to the same temperature as the transported material transported at the use site. The internal temperature of the constant temperature case 6 is set to, for example, about minus 70 ° C. to plus 300 ° C., and the temperature of the drop attachment 7 is set to, for example, about minus 70 ° C. to plus 600 ° C.

この動的評価を所定時間行なった後に、評価サンプル14の状態を把握する。例えば、上カバーゴム15、心体17の損傷状態、物性(残留強度、伸び等)を把握する。   After performing this dynamic evaluation for a predetermined time, the state of the evaluation sample 14 is grasped. For example, the damage state and physical properties (residual strength, elongation, etc.) of the upper cover rubber 15 and the core body 17 are grasped.

この実施形態では、複雑な装置を用いることなく、実機ラインに近似した条件で、評価サンプル14の上カバーゴム15、心体17等の耐衝撃性および耐温度性を把握、評価できる。このように本発明では、コンベヤベルトの使用現場の温度条件と使用現場で付与される外力とを同時に考慮して、評価サンプル14を用いてコンベヤベルトを実機ラインに実装した際の性能を予め評価することができる。   In this embodiment, the impact resistance and temperature resistance of the upper cover rubber 15 and the core body 17 of the evaluation sample 14 can be grasped and evaluated under the conditions approximate to the actual machine line without using a complicated device. As described above, in the present invention, the performance when the conveyor belt is mounted on the actual machine line using the evaluation sample 14 is evaluated in advance in consideration of the temperature condition at the site of use of the conveyor belt and the external force applied at the site of use. can do.

また、恒温ケース6の内部温度を適切に設定することで、評価サンプル14の耐外傷性を、より過酷な条件で促進評価することも可能になる。例えば、雰囲気温度の違いによる評価サンプル14の耐外傷性の変化具合(温度依存性)を把握しておく。この把握したデータに基づいて、恒温ケース6の温度を、使用現場の雰囲気温度よりも高く設定して評価を行なうことで評価時間を短縮できる。   In addition, by appropriately setting the internal temperature of the constant temperature case 6, it is possible to promote and evaluate the damage resistance of the evaluation sample 14 under more severe conditions. For example, the degree of change in temperature resistance (temperature dependence) of the evaluation sample 14 due to the difference in ambient temperature is grasped. Based on the grasped data, the evaluation time can be shortened by performing the evaluation by setting the temperature of the constant temperature case 6 higher than the ambient temperature at the use site.

また、外力付与体8を繰り返し上下動させて用いるので、実際の搬送物を投入して評価する場合と異なり、多数(多量)の搬送物を用意する必要がない。また、搬送物によって評価装置1の周辺が汚れることもない。   Further, since the external force imparting body 8 is repeatedly moved up and down and used, it is not necessary to prepare a large number (large amount) of conveyed objects, unlike the case where an actual conveyed object is introduced and evaluated. Moreover, the periphery of the evaluation apparatus 1 is not soiled by the conveyed product.

種々の条件で評価を行なってデータを蓄積することにより、搬送面15aに投入される搬送物によって評価サンプル14に付与される動的面圧と、耐衝撃性や耐温度性との関係、評価サンプル14に生じた損傷の進行具合と、雰囲気温度や搬送物の温度との関係などを把握することが可能になる。   By performing evaluation under various conditions and accumulating data, the relationship between the dynamic surface pressure applied to the evaluation sample 14 by the conveyed object put on the conveying surface 15a and the impact resistance and temperature resistance, evaluation It is possible to grasp the relationship between the degree of progress of damage caused to the sample 14 and the ambient temperature and the temperature of the conveyed product.

図2に例示する評価装置1の別の実施形態は、評価サンプル14の耐摩耗性および耐温度性を動的に評価するものであり、先の実施形態に対して外力付与手段を異ならせている。その他の構成は先の実施形態と同じである。   Another embodiment of the evaluation apparatus 1 illustrated in FIG. 2 dynamically evaluates the wear resistance and temperature resistance of the evaluation sample 14, and the external force applying means is different from that of the previous embodiment. Yes. Other configurations are the same as those of the previous embodiment.

この外力付与手段は、外周面形状が可変である転動ローラ11からなる外力付与体と、この転動ローラ11を独立して回転させる回転部12とを有している。そして、転動ローラ11の外周面を評価サンプル14の搬送面15aに接触させつつ転動させる構成になっている。   The external force applying means includes an external force applying body including a rolling roller 11 whose outer peripheral surface shape is variable, and a rotating unit 12 that rotates the rolling roller 11 independently. And it is the structure which rolls, making the outer peripheral surface of the rolling roller 11 contact the conveyance surface 15a of the evaluation sample 14. FIG.

転動ローラ11の外周面形状は、使用現場の搬送物の形状に近似したものを用いる。図2で評価サンプル14の搬送面15aに接触して転動している転動ローラ11aの外周面は、微小な凹凸が多数設けられている円周面である。回転部12に着脱される転動ローラ11b、11c、11dの外周面はそれぞれ、四角状の突起、円弧状の突起、三角状の突起を有する形状になっている。   As the outer peripheral surface shape of the rolling roller 11, a shape approximate to the shape of the conveyed product at the use site is used. In FIG. 2, the outer peripheral surface of the rolling roller 11 a that rolls in contact with the conveyance surface 15 a of the evaluation sample 14 is a circumferential surface provided with a large number of minute irregularities. The outer peripheral surfaces of the rolling rollers 11b, 11c, and 11d that are attached to and detached from the rotating unit 12 have a shape having a quadrangular protrusion, an arc-shaped protrusion, and a triangular protrusion, respectively.

このようにベルト搬送物の形状に応じて、転動ローラ11の外周面には種々の形状を採用することができる。この実施形態では、外周面形状の異なる複数の転動ローラ11a〜11dを備えているが、形状の異なる複数の外周面を備えて、1つの転動ローラ11に対して形状の異なる外周面を付け替え可能な構造にすることもできる。   As described above, various shapes can be employed on the outer peripheral surface of the rolling roller 11 according to the shape of the belt conveyance. In this embodiment, a plurality of rolling rollers 11 a to 11 d having different outer peripheral surface shapes are provided, but a plurality of outer peripheral surfaces having different shapes are provided, and an outer peripheral surface having a different shape with respect to one rolling roller 11 is provided. It is also possible to make the structure replaceable.

転動ローラ11は、耐久性等を考慮して、例えば、鋼等の金属製にする。或いは、搬送面15aに接触する転動ローラ11の外周面を、搬送物と同じ材質にすることもできる。例えば、搬送物が砂の場合は、転動ローラ11の外周面を砂で形成する(砂を付着させる)。 The rolling roller 11 is made of metal such as steel in consideration of durability and the like. Or the outer peripheral surface of the rolling roller 11 which contacts the conveyance surface 15a can also be made into the same material as a conveyed product. For example, when the conveyed product is sand, the outer peripheral surface of the rolling roller 11 is formed of sand (sand is attached).

評価サンプル14の耐摩耗性および耐温度性を評価する際には、恒温ケース6内で一対のプーリ3、4に架け回す。そして、評価サンプル14と同じ仕様のコンベヤベルトが使用される使用現場と同じテンションで張設する。   When evaluating the abrasion resistance and temperature resistance of the evaluation sample 14, the evaluation sample 14 is wound around the pair of pulleys 3 and 4 in the constant temperature case 6. And it tensions with the same tension as the use site where the conveyor belt of the same specification as the evaluation sample 14 is used.

次いで、転動ローラ11を回転部12によって回転駆動させて、その外周面を評価サンプル14の搬送面15aに接触させつつ、評価サンプル14の走行方向とは反対方向に転動させる。或いは、評価サンプル14の走行方向に転動させる。場合によっては、回転自在に軸支された転動ローラ11を回転部12によってブレーキをかけつつ、評価サンプル14の走行方向に転動させる。   Next, the rolling roller 11 is driven to rotate by the rotating unit 12, and the outer peripheral surface thereof is rolled in a direction opposite to the traveling direction of the evaluation sample 14 while being in contact with the transport surface 15 a of the evaluation sample 14. Alternatively, the evaluation sample 14 is rolled in the traveling direction. In some cases, the rolling roller 11 supported rotatably is rolled in the running direction of the evaluation sample 14 while being braked by the rotating unit 12.

転動ローラ11の外周面形状は、使用現場で搬送する搬送物と近似したものを使用する。転動ローラ11の回転速度は、搬送物により生じる摩耗を再現するように設定する。転動ローラ11を搬送面15aに接触させる面圧も、使用現場を再現するように設定する。   As the outer peripheral surface shape of the rolling roller 11, a shape approximate to a conveyed product to be conveyed at a use site is used. The rotational speed of the rolling roller 11 is set so as to reproduce the wear caused by the conveyed product. The surface pressure at which the rolling roller 11 is brought into contact with the conveying surface 15a is also set so as to reproduce the use site.

評価をする際には、恒温ケース6の内部温度および転動ローラ11の外周面の温度を温度コントローラ13により、使用現場と同じ条件に設定する。即ち、恒温ケース6の温度は使用現場の雰囲気温度と同じ温度、転動ローラ11の外周面の温度は使用現場で搬送する搬送物と同じ温度に、それぞれ別個に温度調整する。   When evaluating, the internal temperature of the constant temperature case 6 and the temperature of the outer peripheral surface of the rolling roller 11 are set to the same conditions as the site of use by the temperature controller 13. That is, the temperature of the constant temperature case 6 is adjusted to the same temperature as the ambient temperature at the use site, and the temperature of the outer peripheral surface of the rolling roller 11 is adjusted separately to the same temperature as the conveyed product at the use site.

この動的評価を所定時間行なった後に、評価サンプル14の状態を把握する。例えば、上カバーゴム15、心体17の損傷状態、物性(残留強度、伸び等)を把握する。   After performing this dynamic evaluation for a predetermined time, the state of the evaluation sample 14 is grasped. For example, the damage state and physical properties (residual strength, elongation, etc.) of the upper cover rubber 15 and the core body 17 are grasped.

この実施形態では、複雑な装置を用いることなく、実機ラインに近似した条件で、評価サンプル14の上カバーゴム15、心体17等の耐摩耗性および耐温度性を把握、評価できる。   In this embodiment, the wear resistance and temperature resistance of the upper cover rubber 15 and the core body 17 of the evaluation sample 14 can be grasped and evaluated under the conditions approximate to the actual machine line without using a complicated device.

また、転動ローラ11を用いるので、実際の搬送物を投入して評価する場合と異なり、多数(多量)の搬送物を用意する必要がない。また、搬送物によって評価装置1の周辺が汚れることもない。   In addition, since the rolling roller 11 is used, it is not necessary to prepare a large number (large amount) of conveyed items, unlike the case where the actual conveyed items are input and evaluated. Moreover, the periphery of the evaluation apparatus 1 is not soiled by the conveyed product.

種々の条件で評価を行なってデータを蓄積することにより、搬送面15aに投入される搬送物によって評価サンプル14に付与される動的摩擦力と、耐摩耗性や耐温度性との関係、評価サンプル14に生じた摩耗の進行具合と、雰囲気温度や搬送物の温度との関係などを把握することが可能になる。   By evaluating the data under various conditions and accumulating data, the relationship between the dynamic frictional force applied to the evaluation sample 14 by the transported material put on the transport surface 15a and the wear resistance and temperature resistance, and the evaluation It is possible to grasp the relationship between the progress of wear generated in the sample 14, the ambient temperature and the temperature of the conveyed product.

評価サンプル14は、上述した実施形態のように、上カバーゴム15、下カバーゴム16や心体17等の構成部材を一体化したものだけでなく、図4、5に例示する仕様にすることもできる。   The evaluation sample 14 is not limited to those in which constituent members such as the upper cover rubber 15, the lower cover rubber 16, and the core body 17 are integrated as in the above-described embodiment, and the specification illustrated in FIGS. You can also.

この評価サンプル14は、上カバーゴム15の搬送面15aに複数の凹部15bを有している。これら凹部15bには、加硫された異なる仕様の評価ゴム18a、18b、18c、18d、18e、18fを嵌め込むことができるようになっている。これにより、複数の異なる仕様の評価ゴム18a〜18fの耐外傷性(耐衝撃性や耐摩耗性)および耐温度性を同時に評価することができる。即ち、複数種類の仕様の評価ゴム18a〜18fを、一度に評価できるので評価時間の短縮化を図ることが可能になる。   The evaluation sample 14 has a plurality of recesses 15 b on the transport surface 15 a of the upper cover rubber 15. In these recesses 15b, vulcanized evaluation rubbers 18a, 18b, 18c, 18d, 18e, and 18f with different specifications can be fitted. Thereby, the damage resistance (impact resistance and wear resistance) and temperature resistance of the evaluation rubbers 18a to 18f having different specifications can be simultaneously evaluated. That is, since the evaluation rubbers 18a to 18f having a plurality of specifications can be evaluated at a time, the evaluation time can be shortened.

恒温ケース6の内部温度を、使用現場の雰囲気温度よりも高く設定して評価ゴム18a〜18fを評価促進することと組み合わせることにより、一段と評価時間を短縮して効率化を図ることができる。   By combining the setting of the internal temperature of the thermostatic case 6 higher than the ambient temperature at the use site and promoting the evaluation of the evaluation rubbers 18a to 18f, the evaluation time can be further shortened and the efficiency can be improved.

尚、上カバーゴム15についてのみ、耐外傷性および耐温度性を評価するならば、図4、5に例示した評価サンプル14を変形させたものを用いることができる。即ち、金属ベルトチェーン等のベースベルトの外周面に、種々の評価ゴム18a等を取り付けて評価を行なえばよい。   In addition, if only the upper cover rubber 15 is evaluated for damage resistance and temperature resistance, a modified version of the evaluation sample 14 illustrated in FIGS. 4 and 5 can be used. That is, the evaluation may be performed by attaching various evaluation rubbers 18a to the outer peripheral surface of a base belt such as a metal belt chain.

1 評価装置
2 ベース
3 駆動プーリ
3a 支柱
3b 速度調整部
4 従動プーリ
4a 支柱
4b スライドレール
5 ロードセル
6 恒温ケース
7、7a、7b、7c、7d、7e 落下アタッチメント
8 外力付与体
8a 係合突起
9 錘
10 カムシャフト(落下機構)
10a 係合突起
11、11a、11b、11c、11d 転動ローラ(外力付与体)
12 回転部
13 温度コントローラ
14 評価サンプル
15 上カバーゴム
15a 搬送面
15b 凹部
16 下カバーゴム
17 心体
18a、18b、18c、18d、18e、18f 評価ゴム
DESCRIPTION OF SYMBOLS 1 Evaluation apparatus 2 Base 3 Drive pulley 3a Strut 3b Speed adjustment part 4 Driven pulley 4a Strut 4b Slide rail 5 Load cell 6 Constant temperature case 7, 7a, 7b, 7c, 7d, 7e Drop attachment 8 External force giving body 8a Engagement protrusion 9 Weight 10 Camshaft (drop mechanism)
10a Engaging protrusion 11, 11a, 11b, 11c, 11d Rolling roller (external force imparting body)
12 Rotating part 13 Temperature controller 14 Evaluation sample 15 Upper cover rubber 15a Conveying surface 15b Recess 16 Lower cover rubber 17 Core bodies 18a, 18b, 18c, 18d, 18e, 18f Evaluation rubber

Claims (7)

コンベヤベルトの評価サンプルが架け回される一対のプーリと、前記評価サンプルのテンションを調整するテンション調整部と、前記評価サンプルの走行速度を調整する速度調整部と、前記評価サンプルが収容される恒温ケースと、前記評価サンプルの搬送面に外力付与体を繰り返し接触させる外力付与手段と、前記恒温ケースの内部温度および前記外力付与体の温度を調整する温度コントローラとを備えて、
前記外力付与手段が、任意の質量に調整できる錘を有して、先端形状が可変である外力付与体と、この外力付与体を繰り返し自由落下させる落下機構と、復元機構とからなり、この外力付与体を先端から前記評価サンプルの搬送面に繰り返し落下させる構成にして、前記評価サンプルに落下させた前記外力付与体を前記評価サンプルとともに走行方向に所定長さ移動させた後に上方移動させて、前記復元機構により前記走行方向と反対方向に前記所定長さ移動させて前記外力付与体を落下前の位置に戻して前記外力付与体の繰り返し自由落下を行って前記評価サンプルの耐外傷性および耐温度性を評価することを特徴とするコンベヤベルトの評価装置。
A pair of pulleys around which an evaluation sample of the conveyor belt is wound, a tension adjusting unit that adjusts the tension of the evaluation sample, a speed adjusting unit that adjusts the traveling speed of the evaluation sample, and a constant temperature at which the evaluation sample is accommodated A case, an external force applying means that repeatedly contacts an external force applying body to the transport surface of the evaluation sample, and a temperature controller that adjusts the internal temperature of the constant temperature case and the temperature of the external force applying body,
The external force applying means comprises an external force applying body having a weight that can be adjusted to an arbitrary mass and having a variable tip shape, a dropping mechanism that repeatedly and freely drops the external force applying body, and a restoring mechanism. A configuration in which the imparting body is repeatedly dropped from the tip onto the conveyance surface of the evaluation sample, and the external force imparting body dropped on the evaluation sample is moved upward together with the evaluation sample in the traveling direction and then moved upward, The restoring mechanism moves the predetermined length in the direction opposite to the traveling direction to return the external force imparting body to a position before dropping, and repeatedly performs the free fall of the external force imparting body, thereby preventing the damage resistance and resistance of the evaluation sample. An apparatus for evaluating a conveyor belt, characterized by evaluating temperature characteristics.
コンベヤベルトの評価サンプルが架け回される一対のプーリと、前記評価サンプルのテンションを調整するテンション調整部と、前記評価サンプルの走行速度を調整する速度調整部と、前記評価サンプルが収容される恒温ケースと、前記評価サンプルの搬送面に外力付与体を繰り返し接触させる外力付与手段と、前記恒温ケースの内部温度および前記外力付与体の温度を調整する温度コントローラとを備えて、
前記外力付与手段が、外周面形状が可変である転動ローラからなる外力付与体と、この外力付与体を独立して回転駆動させる回転部とからなり、この外力付与体の外周面を前記評価サンプルの搬送面に接触させつつ、転動させる構成にして、前記評価サンプルの搬送面に接触する際の前記外力付与体の外周面の回転移動方向が前記搬送面の走行方向と反対方向になるようにして前記評価サンプルの耐外傷性および耐温度性を評価することを特徴とするコンベヤベルトの評価装置。
A pair of pulleys around which an evaluation sample of the conveyor belt is wound, a tension adjusting unit that adjusts the tension of the evaluation sample, a speed adjusting unit that adjusts the traveling speed of the evaluation sample, and a constant temperature at which the evaluation sample is accommodated A case, an external force applying means that repeatedly contacts an external force applying body to the transport surface of the evaluation sample, and a temperature controller that adjusts the internal temperature of the constant temperature case and the temperature of the external force applying body,
The external force imparting means includes an external force imparting body composed of a rolling roller whose outer peripheral surface shape is variable, and a rotating portion that independently drives the external force imparting body to rotate, and the outer peripheral surface of the external force imparting body is evaluated as described above. It is configured to roll while contacting the sample transport surface, and the rotational movement direction of the outer peripheral surface of the external force imparting body when contacting the transport surface of the evaluation sample is opposite to the traveling direction of the transport surface. Thus, the conveyor belt evaluation apparatus characterized by evaluating the damage resistance and temperature resistance of the evaluation sample.
コンベヤベルトの評価サンプルが架け回される一対のプーリと、前記評価サンプルのテンションを調整するテンション調整部と、前記評価サンプルの走行速度を調整する速度調整部と、前記評価サンプルが収容される恒温ケースと、前記評価サンプルの搬送面に外力付与体を繰り返し接触させる外力付与手段と、前記恒温ケースの内部温度および前記外力付与体の温度を調整する温度コントローラとを備えて、
前記外力付与手段が、外周面形状が可変である回転自在に軸支された転動ローラからなる外力付与体と、この外力付与体の回転にブレーキをかける回転部とからなり、この外力付与体の外周面を前記評価サンプルの搬送面に接触させて前記回転部によりブレーキをかけつつ、この外力付与体を転動させる構成にして前記評価サンプルの耐外傷性および耐温度性を評価することを特徴とするコンベヤベルトの評価装置。
A pair of pulleys around which an evaluation sample of the conveyor belt is wound, a tension adjusting unit that adjusts the tension of the evaluation sample, a speed adjusting unit that adjusts the traveling speed of the evaluation sample, and a constant temperature at which the evaluation sample is accommodated A case, an external force applying means that repeatedly contacts an external force applying body to the transport surface of the evaluation sample, and a temperature controller that adjusts the internal temperature of the constant temperature case and the temperature of the external force applying body,
The external force imparting means comprises an external force imparting body composed of a rotationally-supported rolling roller whose outer peripheral surface shape is variable, and a rotating portion that brakes the rotation of the external force imparting body. The outer peripheral surface of the evaluation sample is brought into contact with the transport surface of the evaluation sample and the external force imparting body is rolled while the brake is applied by the rotating portion, and the external resistance and temperature resistance of the evaluation sample are evaluated. A conveyor belt evaluation device.
コンベヤベルトの評価サンプルを恒温ケース内で一対のプーリに架け回し、この評価サンプルを予め設定された所定のテンションで張設するとともに、予め設定された所定の速度で走行させた状態にして、この状態の評価サンプルの搬送面に外力付与体を繰り返し接触させ、かつ、前記恒温ケースの内部温度および外力付与体の温度を温度コントローラにより予め設定された温度に調整し、前記外力付与体は、任意の質量に調整できる錘を有して先端形状が可変であり、この外力付与体を先端から前記評価サンプルの搬送面に繰り返し自由落下させ、前記評価サンプルに落下させた前記外力付与体を前記評価サンプルとともに走行方向に所定長さ移動させた後に上方移動させて、復元機構により前記走行方向と反対方向に前記所定長さ移動させて前記外力付与体を落下前の位置に戻して前記外力付与体の繰り返し自由落下を行って前記評価サンプルの耐外傷性および耐温度性を評価することを特徴とするコンベヤベルトの評価方法。 The conveyor belt evaluation sample is wound around a pair of pulleys in a constant temperature case, and the evaluation sample is stretched with a predetermined tension set in advance and is run at a predetermined speed. the conveying surface of the evaluation sample state by repeatedly contacting the external force applying member and the temperature of the internal temperature and the external force applying member of the thermostatic case adjusted to a predetermined temperature by the temperature controller, the external force application member is optionally The tip shape is variable with a weight that can be adjusted to the mass of the external force imparting body. The external force imparting body is repeatedly and freely dropped from the distal end to the transport surface of the evaluation sample, and the external force imparting body dropped on the evaluation sample is evaluated. The sample is moved together with the sample in the running direction and then moved upward, and the restoring mechanism moves the given length in the direction opposite to the running direction. Evaluation of the conveyor belt, characterized in that to evaluate the external damage resistance and temperature resistance of the evaluation sample is repeatedly free fall of the external force applying member is returned to a position before dropping the external force application member Te. コンベヤベルトの評価サンプルを恒温ケース内で一対のプーリに架け回し、この評価サンプルを予め設定された所定のテンションで張設するとともに、予め設定された所定の速度で走行させた状態にして、この状態の評価サンプルの搬送面に外力付与体を繰り返し接触させ、かつ、前記恒温ケースの内部温度および外力付与体の温度を温度コントローラにより予め設定された温度に調整し、前記外力付与体は、外周面形状が可変である転動ローラであり、この外力付与体を独立して回転駆動させて、その外周面を前記評価サンプルの搬送面に接触させつつ転動させて、前記評価サンプルの搬送面に接触する際の前記外力付与体の外周面の回転移動方向が前記搬送面の走行方向と反対方向になるようにして前記評価サンプルの耐外傷性および耐温度性を評価することを特徴とするコンベヤベルトの評価方法。 The conveyor belt evaluation sample is wound around a pair of pulleys in a constant temperature case, and the evaluation sample is stretched with a predetermined tension set in advance and is run at a predetermined speed. the conveying surface of the evaluation sample state by repeatedly contacting the external force applying member and the temperature of the internal temperature and the external force applying member of the thermostatic case adjusted to a predetermined temperature by the temperature controller, the external force application member is an outer peripheral It is a rolling roller whose surface shape is variable, and this external force imparting body is driven to rotate independently, and its outer peripheral surface is rolled while being in contact with the conveying surface of the evaluation sample, thereby conveying the evaluation sample. external damage resistance and the evaluation sample rotational movement direction of the outer peripheral surface of the external force applying member is set to be in a direction opposite to the running direction of the conveying surface when in contact with Evaluation of the conveyor belt, characterized in that to evaluate the degree of. コンベヤベルトの評価サンプルを恒温ケース内で一対のプーリに架け回し、この評価サンプルを予め設定された所定のテンションで張設するとともに、予め設定された所定の速度で走行させた状態にして、この状態の評価サンプルの搬送面に外力付与体を繰り返し接触させ、かつ、前記恒温ケースの内部温度および外力付与体の温度を温度コントローラにより予め設定された温度に調整し、前記外力付与体は、外周面形状が可変である回転自在に軸支された転動ローラであり、その外周面を前記評価サンプルの搬送面に接触させて前記外力付与体の回転にブレーキをかけつつ転動させて前記評価サンプルの耐外傷性および耐温度性を評価することを特徴とするコンベヤベルトの評価方法。 The conveyor belt evaluation sample is wound around a pair of pulleys in a constant temperature case, and the evaluation sample is stretched with a predetermined tension set in advance and is run at a predetermined speed. the conveying surface of the evaluation sample state by repeatedly contacting the external force applying member and the temperature of the internal temperature and the external force applying member of the thermostatic case adjusted to a predetermined temperature by the temperature controller, the external force application member is an outer peripheral It is a rolling roller that is rotatably supported and has a variable surface shape. The evaluation is performed by bringing the outer peripheral surface into contact with the conveying surface of the evaluation sample and rolling the external force imparting body while applying a brake. A method for evaluating a conveyor belt, wherein the sample is evaluated for resistance to trauma and temperature. 前記評価サンプルの搬送面に複数の凹部を設け、これら凹部に異なる仕様の評価ゴムを嵌め込むことにより、複数の異なる仕様の評価ゴムの耐外傷性および耐温度性を同時に評価する請求項4〜6のいずれかに記載のコンベヤベルトの評価方法。   A plurality of recesses are provided on the transport surface of the evaluation sample, and evaluation rubbers having different specifications are fitted into these recesses, thereby simultaneously evaluating the damage resistance and temperature resistance of the evaluation rubbers having different specifications. The evaluation method of the conveyor belt in any one of 6.
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