JP3924599B2 - Wear test apparatus and method - Google Patents

Description

  The present invention relates to a wear test apparatus and method for performing a wear test using a material constituting a casing of a water use structure in a water channel as a test body.

  In recent years, waterways and waterway tunnels that have been constructed rapidly after the war have become obsolete, and the time for renewal has come. The main deterioration that occurs in the structural frame of these irrigation structures is the wear of the material on the surface of the structure due to water flow. That is, unevenness is generated on the surface due to wear, and the water flow performance is lowered due to a decrease in the roughness coefficient. In order to quantitatively grasp the deterioration of the water flow performance due to wear, it is necessary to measure the wear characteristics of the material constituting the casing of the irrigation structure and grasp the resistance to wear of the structure.

  Furthermore, it has become necessary to confirm by testing the information on how many years the function and performance will be maintained, or how many years later the degree of functional degradation and performance degradation will occur. In addition, repair materials that smooth the irregularities on the surface of water use structures are also commercially available, but it is desirable to have a wear test that can evaluate how many years these materials are effective against wear due to water flow. Yes.

  For example, in a concrete channel, when subjected to wear due to water flow, as shown in FIG. 6, (1) the cement paste layer M3 near the surface is removed, and (2) the cement mortar content contained in the concrete is then removed. M2 is scraped off, (3) coarse aggregate portion M1 in the concrete is exposed, and (4) coarse aggregate portion M1 falls off. As a result, (5) the cross-section of the housing is reduced, and (6) the function and performance of the structure are ultimately reduced.

In the conventional wear test apparatus and method, a wear material (abrasive paper, sandpaper, abrasive, abrasive powder, wear wheel, grindstone, steel brush, steel wire, steel made of a test material having a hardness higher than that of the test sample is used. 2. Description of the Related Art A wear and slide test apparatus is known that slides friction while pressing (bush, spike) and measures a decrease in mass (see, for example, Patent Document 1). Further, there is known a wear sliding test apparatus that injects a solid material onto a fixed test body with compressed air and measures a decrease in the mass thereof (for example, see Patent Document 2).
Japanese Patent Laid-Open No. 8-145866 (page 3, FIG. 1) JP2000-171371 (4th page, FIG. 1)

  However, in the above conventional wear test apparatus and wear test method, wear is promoted by a harder wear material than the specimen, so that wear is evenly generated from the surface regardless of the material of the material to be tested. . For this reason, even when the wear test is performed on the material constituting the casing of the water use structure, that is, the civil engineering material such as concrete, the material is uniformly worn from the surface, and is shown in FIG. There is a problem that the deterioration reduction that appears as surface irregularities actually generated in a water channel or a water channel tunnel cannot be faithfully reproduced by a test. Furthermore, in general, regarding resistance to material wear, conventionally, the weight of the material before the wear test and the weight after the wear test are compared, and the resistance is evaluated by paying attention to the decrease in mass. I was going. However, in the case of irrigation structures such as waterways and waterway tunnels, an increase in the roughness coefficient due to surface irregularities is a problem rather than resistance evaluation. There is a problem that you can not lower

  The present invention has been made to solve the above-described problems, and can easily and faithfully reproduce the wear state on the water-permeable surface of a water conserving structure with a simple configuration, and the specimen can be quantitatively analyzed. It is an object of the present invention to provide a wear test apparatus and method that can measure and accurately grasp the wear characteristics of a water conserving structure housing material and the functional deterioration and performance deterioration of the water conserving structure.

Abrasion testing apparatus according to the present invention includes a rotating drum test specimen made of a material constituting the structural framework of the irrigation structure is rotated by the outer peripheral side is attached to the attachment portion drive motor so that the test surface faces inward, the It is arranged on the axial center side inside the rotating drum and injects a water flow onto the rotating test body mounted on the rotating drum and adjusts at least one of the injection angle and the injection direction with respect to the test surface of the test body. Rutotomoni provided capable and provided injection nozzle, high-pressure water to adjust a control device connected to the drive motor to control the rotational speed of the rotary drum, the water is connected to the injection nozzle ejecting the water pressure and quantity A wear condition is set according to the condition of a water channel that is provided with an injection device and the test body is to be used as a casing of a water utilization structure .

In the wear test apparatus according to the present invention includes a rotating drum test specimen made of a material constituting the structural framework of the irrigation structure is rotated by the outer peripheral side is attached to the attachment portion drive motor so that the test surface faces inward, the It is arranged on the axial center side inside the rotating drum and injects a water flow onto the rotating test body mounted on the rotating drum and adjusts at least one of the injection angle and the injection direction with respect to the test surface of the test body. Rutotomoni provided capable and provided injection nozzle, high-pressure water to adjust a control device connected to the drive motor to control the rotational speed of the rotary drum, the water is connected to the injection nozzle ejecting the water pressure and quantity and a jetting device, the test body in accordance with the situation of the waterway that will be used as a precursor of the irrigation structure, since the set wear condition, the high pressure at a faster rate than the actual water flow conditions It will be shed water flow to the test body. As a result, the wear in the form close to that reproduces the wear state of the test specimen is observed, such as the actual waterways. In this way, the specimen can be worn in a shape close to that in which the wear state is faithfully reproduced in a short time. When the spray nozzle is fixed, the water flow can be sprayed uniformly on the test body, and the acceleration of wear can be stabilized. In addition, since a plurality of test bodies can be mounted in the circumferential direction of the rotating drum, the wear test of a plurality of test bodies can be performed simultaneously. Since the injection nozzle is provided so that at least one of the injection angle and the injection direction with respect to the test surface of the test body can be adjusted, the test can be performed with finely set conditions of the wear test. Since the distance between the spray nozzle and the test body can be kept constant at all times and the direction of spraying can be reliably directed to the test body, the rotational speed of the rotating drum, the water pressure and the amount of water to be sprayed are adjusted. Only fine wear conditions can be set.

In the wear test apparatus according to claim 2, the wear conditions are set by the injection pressure, the amount of water to be injected, the injection angle, the injection direction, the injection time, and the rotational speed of the rotary drum .

A wear test method according to the present invention includes a rotating drum that is mounted on an outer peripheral mounting portion so that a test surface made of a material constituting a structural casing of a water utilization structure is directed inward, and is rotationally driven by a drive motor. It is arranged on the axial center side inside the rotating drum and injects a water flow onto the rotating test body mounted on the rotating drum and adjusts at least one of the injection angle and the injection direction with respect to the test surface of the test body. A control device for controlling the rotational speed of the rotating drum connected to the drive motor, and a high-pressure water injection device for adjusting the water pressure and the amount of water to be injected connected to the injection nozzle. with the door, the test body in accordance with the situation of the waterway that will be used as a precursor of the irrigation structure, after setting the wear condition, the rotating drum test body based on the wear condition Wear, and the rotary drum is rotated by a driving motor, by injecting water to the test body to be rotated by being mounted on the rotary drum by the injection nozzle, so as to reproduce the wear condition by promoting wear by water flow It is a thing.

In the wear test method according to the present invention, a rotating drum that is mounted on an outer peripheral mounting portion so that a test surface made of a material constituting a structural casing of a water use structure is directed inward and is rotationally driven by a drive motor, It is arranged on the axial center side inside the rotating drum and injects a water flow onto the rotating test body mounted on the rotating drum and adjusts at least one of the injection angle and the injection direction with respect to the test surface of the test body. A control device for controlling the rotational speed of the rotating drum connected to the drive motor, and a high-pressure water injection device for adjusting the water pressure and the amount of water to be injected connected to the injection nozzle. with the door, the test body in accordance with the situation of the waterway that will be used as a precursor of the irrigation structure, after setting the wear condition, the rotating drum test body based on the wear condition Mounting, and the rotary drum is rotated by a driving motor, by injecting water to the test body to be rotated by being mounted on the rotary drum by the injection nozzle, so as to reproduce the wear condition by promoting wear by water flow Therefore, a high-pressure water flow is applied to the test specimen at a faster speed than the actual water flow condition, and the test specimen is worn in a shape close to the one that reproduces the wear state seen in the actual water channel. It can be worn in a shape close to a faithful reproduction of the wear state in a short time. For this reason, the wear state can be faithfully reproduced in a short time with respect to the specimen by a simple operation.

The wear test method according to claim 3 is a non-contact type three-dimensional digitizer that measures the wear state of the test body in a non-contact manner.

In the wear test method according to claim 3 , since the wear state of the test specimen is measured by the non-contact type three-dimensional digitizer, the mass and volume can be measured when examining the wear condition of the test specimen. Even if it is not possible, it can be measured without contact.

In the wear test apparatus according to the present invention includes a rotating drum test specimen made of a material constituting the structural framework of the irrigation structure is rotated by the outer peripheral side is attached to the attachment portion drive motor so that the test surface faces inward, the It is arranged on the axial center side inside the rotating drum and injects a water flow onto the rotating test body mounted on the rotating drum and adjusts at least one of the injection angle and the injection direction with respect to the test surface of the test body. Rutotomoni provided capable and provided injection nozzle, high-pressure water to adjust a control device connected to the drive motor to control the rotational speed of the rotary drum, the water is connected to the injection nozzle ejecting the water pressure and quantity and a jetting device, the test body in accordance with the waterway conditions expected to be used as a precursor of the irrigation structure, since the set wear conditions, the water flow side surface of the specimen with a simple structure Contact The wear state can be faithfully reproduced in a short time that. For this reason, when a water structure housing material is used for the test body, it is possible to measure the test body quantitatively and accurately grasp the wear characteristics of the water structure housing material, the functional deterioration of the water utilization structure, and the performance deterioration. I can .

Further, in the wear test method according to the present invention, a rotating drum that is mounted on the outer peripheral mounting portion and rotated by a drive motor so that the test body made of the material constituting the structural casing of the water utilization structure is directed to the inner side; The water flow is injected to the test body that is disposed on the axial center side inside the rotary drum and is mounted on the rotary drum and rotated, and at least one of the injection angle and the injection direction with respect to the test surface of the test body A control device that controls the rotational speed of the rotating drum connected to the drive motor, and high-pressure water that adjusts the water pressure and the amount of water sprayed and connected to the spray nozzle. and a jetting device, the test body in accordance with the waterway conditions expected to be used as a precursor of the irrigation structure, after setting the wear condition, rotating the test body based on the wear condition Attached to the ram, the rotary drum is rotated by a driving motor, by injecting water, to reproduce the wear condition by promoting abrasion by water flow to the test body to be rotated by being mounted on the rotary drum by the injection nozzle Therefore, the wear state on the water flow side surface of the irrigation structure can be easily and faithfully reproduced in a short time with a simple operation.

  For the purpose of faithfully reproducing the wear state on the water flow surface of the irrigation structure, water flow is applied to the rotating drum that is mounted with the specimen and rotated by the motor, and to the specimen that is mounted on the rotating drum and rotated. And a water jet device having a jet nozzle for jetting, and the test body is made of a material that forms a casing of a water use structure in a water channel. At the time of testing, the test body is mounted on a rotary drum, and the rotary drum is mounted on a motor. This was realized by injecting a water flow onto a test specimen that is mounted on a rotating drum and rotated by a water flow injection device to promote wear by the water flow and reproduce the wear state. During the test, a high-pressure water flow is applied to the specimen at a faster speed than the actual water flow condition, and the specimen is worn in a short time in a shape close to a reproduction of the wear state seen in an actual water channel. I try to reproduce the state of wear on the body.

  Hereinafter, the present invention will be described with reference to embodiments shown in the drawings. FIG. 1 and FIG. 2 are a schematic view showing the entire wear test apparatus according to the present embodiment and a front view showing the main part of the apparatus. As shown in FIGS. 1 and 2, a wear test apparatus 2 according to the present embodiment includes a rotating drum (rotating means) 4 that is pivotally supported on a support base 3 and on which test bodies T1 to T6 are mounted. , A drive motor (drive means) 5 for rotating the rotary drum 4 and a high-pressure water injection device (water flow injection means) 6 for jetting a water flow to the test bodies T1 to T6 mounted on the rotary drum 4. I have. The test bodies T1 to T6 are made of a concrete piece that is a material constituting a structural casing of a plurality of water use structures, that is, a material constituting a concrete water channel. As shown in FIG. 6, the concrete pieces as the test bodies T1 to T6 referred to here are concrete frames including a coarse aggregate part M1 and a cement mortar part M2 and having a cement paste layer M3 formed on the surface. The test bodies T1 to T6 are arranged in a rectangular plate shape or block shape.

  As shown in FIG. 3, a pair of support legs 7 and 8 are erected on the support base 3. On the upper ends of the support legs 7 and 8, hollow horizontal shafts 9A and 9B are rotatably supported on the same axis by the plummer blocks 7A and 8A. The rotating drum 4 includes a pair of circular side plates 10 and 11, a connecting rod 18 that connects the both side plates 10 and 11, and a support bracket that is provided between the connecting rods 18 and on which test bodies T1 to T6 are detachably mounted. (Mounting part) 12A-12F. A central hole 15 is formed in each of the circular side plates 10 and 11, and boss portions 10A and 11A are provided outside. One ends of the horizontal shafts 9A and 9B are connected to the boss portions 10A and 11A of the circular side plates 10 and 11, respectively. Thus, the rotary drum 4 is rotatably supported by the support legs 7 and 8 via the hollow horizontal shafts 9A and 9B. One horizontal shaft 9A has the other end penetrating the plummer block 7A and projecting outward, and a pulley 13 is attached to the projecting end. A drive transmission belt 14 of a drive motor 5 described later is wound around the pulley 13, and the rotational driving force of the drive motor 5 is transmitted to the rotary drum 4. The drive transmission belt 14 is composed of two rubber V-belts, and stably transmits the drive force of the drive motor 5 to the rotary drum 4. The drive motor 5 is connected to a control device (not shown) so that the rotational driving force can be adjusted and the rotational speed of the rotary drum 4 can be controlled.

  As shown in FIG. 5, the support fittings 12 </ b> A to 12 </ b> F are provided on the outer peripheral side between the side plates 10 and 11 at equal intervals from the center at equal intervals in the circumferential direction. The support fittings 12A to 12F are fixed by sandwiching the four sides of the test bodies T1 to T6 with rectangular upper and lower frames. The test bodies T1 to T6 are attached toward the inside. A pair of bearings 16A, 16B, 17A, and 17B are provided below the circular side plates 10 and 11 to support the weight of the rotating drum 4 and the test bodies T1 to T6.

  Since the test bodies T1 to T6 are provided with the same distance from the center at equal intervals in the circumferential direction of the rotating drum 4 by the support fittings 12A to 12F, the same distance from the shaft center when the rotating drum 4 rotates. It is rotated by. For this reason, when the water flow is injected from the fixed side of the shaft center, any of the test bodies T1 to T6 receives the water flow evenly. In addition, since a plurality of test bodies T1 to T6 can be mounted in the circumferential direction of the rotating drum 4, the wear test of the plurality of test bodies T1 to T6 can be performed simultaneously. Since the rotating drum 4 is provided with the support fittings 12A to 12F on the outer peripheral side, the test bodies T1 to T6 can be easily attached to and detached from the rotating drum 4 from the outside.

  Supports 3 are erected on the support stand 3 outside the support legs 7 and 8 in the axial direction of the rotary drum 4. A pressure-resistant tube (tube) 22 is attached to the upper ends of the columns 20 and 21 through the horizontal shafts 9A and 9B and the center holes 15 and 15, respectively. The pressure tube 22 has one end 22 </ b> A closed and the other end opening 22 </ b> B connected to the high pressure water supply unit 23 via the pressure hose 24, and high pressure water is introduced. The pressure tube 22 is provided with an injection nozzle 25 at the approximate center between the side plates 10 and 11. The injection nozzle 25 uniformly ejects high-pressure water in the radial direction from the inner side to the outer side of the rotary drum 4 in a fan shape, and ejects it in a predetermined range A as shown in FIG. The injection angle of the injection nozzle 25 can be set to a desired angle such as 15 °, 25 °, or 40 °. The injection angle here refers to the spread of the injection in the circumferential direction starting from the injection port. Moreover, this injection nozzle 25 can incline the direction of a jet nozzle. The injection direction here refers to the inclination with respect to the radial direction of the rotating drum 4. For this reason, not only the injection angle but also the injection direction can be changed.

  The high-pressure water supply unit 23 adjusts the water pressure to a desired pressure and supplies high-pressure water to the outside. The high-pressure water supply device 23, the pressure-resistant hose 24, the pressure-resistant pipe 22, and the injection nozzle 25 constitute a high-pressure water injection device 6. The support 3 is provided with a cover (not shown) that covers the upper portion of the rotary drum 4 so as to prevent the sprayed water flow from scattering.

  Since the injection nozzle 25 is provided so that the injection angle and the injection direction with respect to the wear surface of the test bodies T1 to T6 can be adjusted, the test can be performed with finely set wear test conditions. Moreover, since the test bodies T1 to T6 are mounted along the outer peripheral side of the rotating drum 4 so that the wear test surface faces inward, and the injection nozzle 25 is disposed on the axial center side of the rotating drum 4, the wear is promoted. In addition to being stabilized, scattering of the injected water flow is suppressed, and it becomes easy to collect water after the injection processing. For this reason, the apparatus can be made compact. Further, since the injection nozzle 25 is fixed to the pressure tube 22 on the axial center side of the rotating drum 4 and high-pressure water is injected toward the outside of the rotating drum 4, the injection nozzle 25 and the test body T1 are provided. Since the distance to T6 can always be kept constant and the injection direction can be reliably directed to the test bodies T1 to T6, the rotational speed of the rotating drum 4 and the injected water pressure and amount are adjusted. Only fine wear conditions can be set.

  If the mass and volume of the test specimens T1 to T6 cannot be measured after the wear test by the wear test apparatus 2, use a non-contact type three-dimensional digitalizer (not shown) to measure the wear amount of the test specimens T1 to T6. Is supposed to do. For this reason, the amount of wear can be measured without contacting the specimens T1 to T6.

  Next, the wear test method according to the present invention will be described based on the action of the wear test apparatus 2 according to the above embodiment. First, the test bodies T1 to T6 for performing the wear test are mounted on the support fittings 12A to 12F of the rotary drum 4 with the test surface facing inward. The test bodies T1 to T6 are materials used for water utilization structures, and are made of, for example, concrete or repair material that constitutes an agricultural waterway. Next, the injection pressure, the amount of water to be injected, the injection angle, the injection direction, the injection time (the rotation speed of the rotating drum 4 and the injection continuation) according to the condition of the water channel where the test bodies T1 to T6 are to be used as the enclosure of the water use structure The test conditions such as (time) are set in advance and recorded, and the test conditions are recorded. Of these test conditions, the necessary conditions are continuously recorded during the test. When the test conditions are set, the drive motor 5 is driven based on the test conditions, the rotating drum 4 is rotated at a constant rotation speed, and the high pressure water supply unit 23 is operated to rotate from the spray nozzle 25. The water flow is jetted at the water pressure, the water amount, the jetting angle and the jetting direction set with respect to the inner side surface of T6, that is, the wear test surface. Since the support fittings 12A to 12F are equally spaced from the shaft center at equal intervals in the circumferential direction of the rotary drum 4, all the test bodies T1 to T6 receive the water flow injected from the injection nozzle 25 equally. In this way, the wear test surfaces of the test bodies T1 to T6 are subjected to a high-pressure water flow at a faster speed than the actual water flow state as the test time elapses. As a result, the specimen is worn in a shape close to that which reproduces the wear state seen in an actual water channel or the like, and the wear is promoted. Thus, the specimen can be worn in a shape close to a faithful reproduction of the wear state in a short time.

  In the wear test method according to the present invention, since water is jetted, the wear of the test bodies T1 to T6 proceeds in the process shown in FIG. That is, all of the test bodies T1 to T6 are a part of the concrete frame, and are common in that the coarse paste part M1 and the cement mortar part M2 are included and the cement paste layer M3 is formed on the surface. For example, when a water stream is sprayed onto a cement paste layer M3 of a certain test body T1 shown in FIG. 6 (see S1 in FIG. 6), the cement paste layer M3 is first removed with time and included in concrete. The mortar portion M2 to be removed is scraped off from the surface side (see S2 in FIG. 6). Further, when the mortar portion M2 is scraped off, the coarse aggregate portion M1 in the concrete is exposed (see S3 in FIG. 6). When exposed to water jet, the coarse aggregate M1 falls off (see S4 in FIG. 6). Thus, the cross-section of the housing is reduced (see S5 in FIG. 6), and when the post-wear housing thickness is measured, the degree of functional deterioration and performance degradation as a structural housing is determined from the measured post-wear housing thickness. When it is impossible to measure the mass and volume of the test bodies T1 to T6 after completion of the test, the measurement is performed using a non-contact type three-dimensional digitizer (not shown). As described above, in the test method according to the present invention, the shape of the test body is close to that which reproduces the wear state seen in an actual water channel, etc., by hitting a high-pressure water flow at a higher speed than the actual water flow state. Will wear and promote wear. Thus, the specimen can be worn in a shape close to that which faithfully reproduces the wear state seen in an actual water channel or the like in a short time. For this reason, an abrasion state can be faithfully reproduced in a short time with respect to the material which comprises the frame of the water use structure in a water channel.

  In the wear test, the test conditions are recorded along with the test time. For this reason, the comparative evaluation of the performance regarding the abrasion resistance of the material (concrete which comprises a waterway, and its repair material) used for an irrigation structure is attained. In addition, since it is possible to examine the test conditions (recording of injection pressure, injection water amount, injection time, etc.) that can reproduce the wear state of the actual water use structure, prediction of the remaining life regarding the future wear of the water use structure, It is possible to quantitatively predict the effects of repairs and renovations. Furthermore, since the wear state peculiar to the water use structure can be reproduced, it becomes possible to obtain information on the function for each deterioration process (S1 to S5 in FIG. 6). That is, taking the case of FIG. 6 as an example, comparison of hydraulic performance (performed by measurement of roughness coefficient, etc.) in each state of S1, S3 and S5 and structural performance (bending strength) in each state of S1 and S5 It is also possible to make a comparison.

  As described above, in the test method according to the present invention, the conventional wear acceleration test promotes the wear of the test body with a hard wear material (abrasive material, grindstone, brush), and the surface is independent of the material of the test body. However, it is possible to reproduce the wear state peculiar to the water use structure using water for the wear test of the water use structure. It is possible to reproduce a specific wear state caused by a process of selectively receiving wear from a soft material and removing a hard material without wearing. In addition, by reproducing the wear state peculiar to the irrigation structure, the wear characteristics of the material to be tested can be measured from the test conditions. For example, the test time and amount of wear of the material to be tested ( When the relationship with mass, volume) is measured, the resistance to wear under the same environmental conditions can be predicted.

  The high-pressure water supply unit 23 of the high-pressure water injection device 6 may use a generally used high-pressure washing machine. Further, the wear rate can be changed by changing the injection pressure and the amount of water injected, which are test conditions.

A wear test apparatus having substantially the same configuration as that of the above embodiment was manufactured and actually tested. In the test, a concrete plate having a compressive strength of about 35 N / mm ² was subjected to a continuous injection time of 45 minutes under a test condition of an injection pressure of 4.9 MPa, an injection water amount of 24.1 L / min, an injection angle of 40 °, It was confirmed that a wear state of about 2 to 3 mm was obtained with a continuous spraying time of 60 minutes.

  In the above embodiment, the axis of the rotary drum 4 is set in the horizontal direction, but the present invention is not limited to this, and it goes without saying that the axis may be set in the vertical direction. The wear test surfaces of the test bodies T1 to T6 are directed inward on the outer peripheral side of the rotating drum 4, and the water flow is jetted from the injection nozzle 25 toward the test bodies T1 to T6 from the axial center side of the rotating drum 4. However, the present invention is not limited to this, and the wear test surfaces of the test bodies T1 to T6 may be mounted on the outer peripheral side of the rotating drum so that the spray nozzle faces the test body from the outside of the rotating drum. Further, the rotating means is constituted by a circular plate attached to the rotary drive shaft instead of the rotating drum, and a test body is mounted along at least one surface of the circular plate along the circumferential direction. You may make it install an injection nozzle so that a surface may be faced. Further, the rotating means is not limited to a rotating body such as a rotating drum or a circular plate, and may be any moving body that can receive injection at a predetermined time with respect to the injection nozzle on the fixed side. Furthermore, solid wear such as sand may be mixed in the high-pressure water to be sprayed to enhance the wear promoting effect.

It is the schematic which shows the whole abrasion testing apparatus which concerns on one embodiment of this invention. Example 1 It is a front view which shows the rotating drum and drive motor of the abrasion test apparatus of FIG. It is a side view which shows the rotating drum and injection nozzle of the abrasion test apparatus of FIG. It is explanatory drawing which shows the test state of the abrasion test apparatus of FIG. It is explanatory drawing which shows the mounting part of a rotating drum. It is the schematic which shows the process in which the material which comprises the structural frame of a concrete waterway deteriorates by the abrasion by a water flow.

Explanation of symbols

2 Wear test equipment 4 Rotating drum (Rotating means)
5 Drive motor (drive means)
6 Water jet device (water jet means)
25 Injection nozzle T1-T6 Specimen

Claims (4)

A rotating drum that is mounted on the outer peripheral mounting part and rotated by a drive motor so that the test surface made of the material constituting the structural housing of the water conserving structure faces inward, and arranged on the axial center side inside this rotating drum is, an injection nozzle provided to be adjusted at least one of the injection angle and the injection direction with respect to the test surface of the test body with injects water to the test body to be rotated by being mounted on the rotary drum the equipped Rutotomoni,
A control device connected to the drive motor for controlling the rotational speed of the rotary drum;
A high-pressure water injection device that is connected to the injection nozzle and adjusts the water pressure and the amount of water to be injected;
A wear test apparatus in which wear conditions are set according to the condition of a water channel that the test body is to be used as a casing of a water conserving structure . The wear test apparatus according to claim 1, wherein the wear condition is set by a jet pressure, a jet water amount, a jet angle, a jet direction, a jet time, and a rotational speed of a rotary drum. A rotating drum that is mounted on the outer peripheral mounting part and rotated by a drive motor so that the test surface made of the material constituting the structural housing of the water conserving structure faces inward, and arranged on the axial center side inside this rotating drum An injection nozzle provided to adjust a jet angle and a jet direction with respect to the test surface of the test body and to jet a water flow to the test body that is mounted on the rotating drum and rotated. As well as
A control device connected to the drive motor for controlling the rotational speed of the rotary drum;
A high-pressure water injection device that is connected to the injection nozzle and adjusts the water pressure and the amount of water to be injected;
Test body according to the condition of waterways that will be used as a precursor of the irrigation structure rotation, after setting the worn condition, and mounted on the rotary drum test body based on the wear condition, the rotary drum by a drive motor A wear test method characterized in that a water flow is jetted onto a rotating test body that is driven and mounted on a rotating drum by a jet nozzle to promote wear caused by the water flow and to reproduce the wear state. The wear test method according to claim 3 , wherein the wear state of the specimen is measured in a non-contact manner by a non-contact type three-dimensional digitizer.

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