A device for determining the wear resistance of a non-slip coating for a roll-on ramp

Abstract

The utility model discloses a kind of devices for determining the wear resistance of roll-on roll-off ship ramp antiskid coating, belong to coating wear resistance determination technical field. Including test bench, the upper surface of test bench is evenly distributed with several test piece grooves, test piece groove is used to place measured piece, the middle part of test bench is equipped with mounting groove, the inside of mounting groove is equipped with first rotating element, one end of first rotating element is fixed in mounting groove, the other end of first rotating element is equipped with mounting beam, the both ends of mounting beam are equipped with sliding rod, the lower end of sliding rod is equipped with rolling assembly, rolling assembly is used to rub contact to the surface of test piece, keep spring is equipped between rolling assembly and mounting beam, keep spring is sleeved and arranged on sliding rod, and the both ends of keep spring are respectively fixed on mounting beam and rolling assembly. The technical scheme is used to provide efficient, reliable evaluation means to the wear resistance of roll-on roll-off ship ramp antiskid coating, improve the preparation effect of roll-on roll-off ship ramp.

Description

Technical Field

[0001] This utility model belongs to the technical field of coating abrasion performance testing, specifically relating to a device for testing the abrasion resistance performance of anti-slip coatings on roll-on / roll-off ship ramps. Background Technology

[0002] As a key piece of equipment in modern maritime transport, the ramps of roll-on / roll-off (Ro-Ro) ships are the core channels for loading and unloading vehicles and cargo, directly affecting operational efficiency and safety. Anti-slip coatings, as a crucial protective layer on the ramp surface, must possess excellent wear resistance to withstand frequent mechanical friction, heavy-load impacts, and marine environmental corrosion. For example, Ro-Ro ship ramps often face dynamic loads during loading and unloading operations, such as sudden braking of vehicles, heavy-load impacts, and wave vibrations. If the anti-slip coating's anti-slip performance is insufficient, it can easily lead to vehicles skidding, overturning, or even falling, causing personal injury and cargo damage.

[0003] In summary, early assessment of abrasion resistance is crucial for ensuring coating quality and reducing subsequent maintenance risks during the production of anti-skid coatings for ro-ro ship ramps. The absence of this assessment may lead to frequent coating failures due to insufficient abrasion resistance during actual use, potentially causing safety accidents or increasing maintenance costs. Therefore, this paper proposes a device for determining the abrasion resistance of anti-skid coatings for ro-ro ship ramps. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a device for measuring the wear resistance of anti-slip coatings on ro-ro ship ramps, so as to provide an efficient and reliable means of evaluating the wear resistance of anti-slip coatings on ro-ro ship ramps and improve the preparation effect of ro-ro ship ramps.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model discloses an apparatus for determining the wear resistance of anti-slip coatings on ramps of roll-on / roll-off ships. The apparatus includes a test bench with several specimen slots evenly distributed around its upper surface for placing test specimens. A mounting slot is located in the center of the test bench, and a first rotating element is located inside the mounting slot. One end of the first rotating element is fixed within the mounting slot, and a mounting beam is located at the other end of the first rotating element. Sliding rods are located at both ends of the mounting beam, and a rolling assembly is located at the lower end of each sliding rod for frictional contact with the surface of the test specimen. A retaining spring is located between the rolling assembly and the mounting beam, sleeved on the sliding rod, with both ends fixed to the mounting beam and the rolling assembly, respectively. A rotation limiting assembly is located at the upper end of each sliding rod to limit its rotation. A synchronous pressure applying assembly is located in the center of the mounting beam to apply the same downward-moving pressure to the upper ends of two symmetrically arranged sliding rods.

[0006] Furthermore, the rolling assembly includes a mounting bracket fixed to the sliding rod, a rotating shaft on the mounting bracket, a roller at one end of the rotating shaft, and a second rotating element at the other end of the rotating shaft, the second rotating element being used to drive the roller to rotate.

[0007] Furthermore, the rotation limiting assembly includes a connecting plate, the middle of which is fixed to a sliding rod, and two ends of the connecting plate are provided with light rods. One end of each light rod is fixed to a mounting beam, and the connecting plate is slidably connected to the light rod.

[0008] Furthermore, the mounting beam has symmetrical ear plates on the middle of both sides, and a screw is provided on the ear plate. The screw is threaded to the ear plate, and a limiting hole is provided on the test platform. The end of the screw is inserted into the limiting hole.

[0009] Furthermore, the synchronous pressure application assembly includes symmetrically arranged wedge components. The wedge components include a first wedge, a second wedge, and a third wedge. The first wedge is fixed to the upper end of the sliding rod. The second and third wedges are symmetrically arranged. The inclined surface of the second wedge is fitted with the inclined surface of the first wedge. A connecting column is provided between the second and third wedges. A vertical plate is provided on the connecting column. One end of the vertical plate is slidably connected to the connecting column, and the other end of the vertical plate is fixedly connected to the mounting beam. The assembly also includes a fourth wedge located in the middle of the mounting beam. The inclined surfaces of the third and fourth wedges are fitted with each other. The lower surface of the fourth wedge is provided with a telescopic element, which is used to drive the fourth wedge to reciprocate in the vertical direction.

[0010] Furthermore, the connecting column is provided with a protruding ridge, and the upright plate is provided with a groove, with the protruding ridge slidably connected in the groove.

[0011] The beneficial effects of this utility model are as follows: The technical solution improves the measurement effect of anti-slip coatings for ro-ro ship ramps by using simultaneous testing of multiple specimens, dynamic load simulation, and precise pressure control. It provides an efficient and reliable evaluation method for the wear resistance performance of anti-slip coatings for ro-ro ship ramps, and is especially suitable for rapid quality testing and R&D verification in the production stage.

[0012] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0013] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration: Figure 1 This is a three-dimensional schematic diagram of the measuring device of this utility model; Figure 2 This is a partial schematic diagram of the measuring device of this utility model.

[0014] The following labels are shown in the attached diagram: 1. Test bench; 2. Specimen slot; 3. Test specimen; 4. Mounting slot; 5. First rotating element; 6. Column; 7. Mounting beam; 8. Sliding rod; 9. Connecting plate; 10. Smooth rod; 11. Mounting bracket; 12. Roller; 13. Rotating shaft; 14. Holding spring; 15. Second rotating element; 16. First wedge; 17. Second wedge; 18. Third wedge; 19. Fourth wedge; 20. Telescopic element; 21. Protruding ridge; 22. Vertical plate; 23. Screw; 24. Ear plate; 25. Connecting column. Detailed Implementation

[0015] like Figures 1-2 As shown, this utility model discloses an apparatus for determining the wear resistance of anti-slip coatings on ramps of roll-on / roll-off ships. It includes a test bench 1, with several specimen slots 2 evenly distributed around the upper surface of the test bench 1. The specimen slots 2 are used to place test specimens 3. A mounting slot 4 is located in the middle of the test bench 1. A first rotating element 5 (either a rotary motor or a dedicated motor) is located inside the mounting slot 4. One end of the first rotating element 5 is fixed inside the mounting slot 4, and a mounting beam 7 is provided on the other end of the first rotating element 5 (the first rotating element 5 and the mounting beam 7 are connected by a column 6). Both ends of the mounting beam 7 are equipped with... The sliding rod 8 has a rolling assembly at its lower end, which is used to make frictional contact with the surface of the test piece. A retaining spring 14 is provided between the rolling assembly and the mounting beam 7. The retaining spring 14 is sleeved on the sliding rod 8, and its two ends are fixed to the mounting beam 7 and the rolling assembly, respectively. The upper end of the sliding rod 8 has a rotation limiting assembly, which is used to limit the rotation of the sliding rod 8. The middle part of the mounting beam 7 has a synchronous pressure application assembly, which is used to apply the same downward pressure to the upper ends of the two symmetrically arranged sliding rods 8.

[0016] The working principle of this technical solution is as follows: First, the test piece 3 (a small part of the ro-ro ship ramp) is placed into the test piece slot 2. After placement, it can be fixed using existing technologies, such as bolts and pressure rings or adhesive. Once the test piece 3 is fixed, pressure is applied to the two sliding rods 8 by the synchronous pressure application component, causing the sliding rods 8 to move downwards, thus bringing the rolling component into contact with the test piece 3. This continues until the contact pressure between the rolling component and the test piece 3 reaches the desired value (simulating the load pressure applied by a wheel on the ro-ro ship ramp). The pressure between the rolling component and the test piece 3 can be obtained by placing a pressure sensor between the connecting plate 9 and the mounting beam 7, or by placing a pressure sensor on the ground of the test piece slot 2 (existing technology). After the pressure is adjusted, the first rotating element 5 is started, causing the rolling component to rotate, resulting in rolling friction between the rolling component and the test piece 3. This continues until the anti-slip coating on the surface of the test piece 3 is damaged, at which point the device is shut down. The experimenter can then evaluate the performance of the anti-slip coating based on parameters such as test duration, contact pressure, and rolling friction, thereby determining whether it meets the requirements for use on the ro-ro ship ramp. It is easy to understand that in this embodiment, the first rotating element 5 drives the rolling element to perform circular motion, that is, the rolling assembly can perform wear resistance tests on multiple test pieces placed on the test bench 1.

[0017] In one feasible embodiment, the rolling assembly includes a mounting bracket 11 fixed to a sliding rod 8. A rotating shaft 13 is mounted on the mounting bracket 11, with a roller 12 at one end and a second rotating element 15 at the other end. The second rotating element 15 drives the roller 12 to rotate. The rotation of the roller 12 by the second rotating element 15 simulates the rotation of a car tire, thereby achieving the operation of rolling friction.

[0018] In one feasible embodiment, the rotation limiting assembly includes a connecting plate 9, the middle of which is fixed to the sliding rod 8. The two ends of the connecting plate 9 are provided with smooth rods 10, one end of which is fixed to the mounting beam 7. The connecting plate 9 is slidably connected to the smooth rods 10. The rotation of the sliding rod 8 is limited by the symmetrically arranged smooth rods 10, so as to avoid the problem that the rolling sliding friction force is arbitrarily changed due to the rotation of the roller 12 driving the sliding rod 8 to rotate.

[0019] In one feasible embodiment, ear plates 24 are symmetrically provided at the middle of both sides of the mounting beam. Screws 23 are threaded onto the ear plates 24. A limiting hole (not shown, but can be understood as a columnar hole on the test bench 1) is provided on the test bench 1. The end of the screw 23 is inserted into the limiting hole. By inserting the screw 23 into the limiting hole, the rotation of the first rotating element 5 is limited, ensuring the stability of the mounting beam 7. At this time, the second rotating element 15 can be activated to drive the roller 12 to rotate, meaning the position of the roller 12 relative to the test bench 1 does not change. Therefore, wear resistance testing can be performed on the two oppositely positioned test pieces 3. In this testing method, the roller 12 continuously rolls and rubs against the test piece 3, which greatly improves testing efficiency. This device can perform wear resistance tests on multiple test pieces 3 (such as test pieces 3 made of different wear-resistant materials). While this method allows for the measurement of multiple test pieces 3, measuring a single test piece 3 is relatively time-consuming. Therefore, by limiting the circumferential rotation of the roller 12 relative to the connecting column 6 using a screw, wear resistance tests can also be performed on one or two test pieces 3. In this case, the roller 12 rotates in place, resulting in higher testing efficiency. The appropriate method can be selected based on the specific circumstances. This can be understood as follows: during the research and development phase, it is necessary to screen various coating types / materials in the early stages. As the screening process progresses, the number of coating types that meet the preparation requirements decreases. At this point, the testing mode of this device can be switched according to the usage requirements.

[0020] In one feasible embodiment, the synchronous pressure application assembly includes a symmetrically arranged wedge assembly, which includes a first wedge 16, a second wedge 17, and a third wedge 18. The first wedge 16 is fixed to the upper end of the sliding rod 8. The second wedge 17 and the third wedge 18 are symmetrically arranged. The inclined surface of the second wedge 17 is fitted with the inclined surface of the first wedge 16. A connecting post 25 is provided between the second wedge 17 and the third wedge 18. A vertical plate 22 is provided on the connecting post 25. One end of the vertical plate 22 is slidably connected to the connecting post 25, and the other end of the vertical plate 22 is fixedly connected to the mounting beam 7. The assembly also includes a fourth wedge 19 located in the middle of the mounting beam 7. The inclined surface of the third wedge 18 is fitted with the inclined surface of the fourth wedge 19. A telescopic element 20 is provided on the lower surface of the fourth wedge 19. The telescopic element 20 is used to drive the fourth wedge 19 to reciprocate in the vertical direction. In one feasible embodiment, the connecting post 25 is provided with a protruding rib 21 and the upright plate 22 is provided with a groove. The protruding rib 21 is slidably connected in the groove. The groove and the protruding rib 21 are provided to prevent the connecting post 25 from rotating and to ensure the relative contact position between each wedge.

[0021] The working principle of the synchronous pressure application component in this specific embodiment is as follows: The telescopic element 20 (linear motor or hydraulic rod) drives the fourth wedge 19 to move, which in turn pushes the third wedge 18 to move to both sides. This, in turn, drives the second wedge 17 to move via the connecting column 25, which in turn pushes the first wedge 16 downwards. This applies vertical pressure to the sliding rod 8, thus changing the contact load torque between the roller 12 and the test piece. When the telescopic element 20 resets, the sliding rod 8 resets under the reset action of the retaining spring 14, which in turn resets the first wedge 16, the second wedge 17, and the third wedge 18. It should be noted that the retaining spring... Spring 14 suspends the roller 12 assembly on the mounting beam 7, and the roller 12 assembly is normally positioned above the specimen slot 2 to avoid interference with the placement of the specimen 3. Of course, it should be noted that, compared with the existing technology of setting a pressure plate on the output end of a pneumatic telescopic rod and applying pressure to the end of the sliding rod 8 through the two ends of the pressure plate, the force transmission method in this embodiment has relatively stable and uniform torque transmission in actual use, and has higher stability and can transmit greater torque.

[0022] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. An apparatus for determining the wear resistance of anti-slip coatings on ramps of roll-on / roll-off ships, characterized in that: The test bench includes a test platform with several specimen slots evenly distributed around its upper surface for placing test specimens. A mounting slot is located in the center of the test bench, and a first rotating element is located inside the mounting slot. One end of the first rotating element is fixed within the mounting slot, and a mounting beam is located at the other end of the first rotating element. Sliding rods are located at both ends of the mounting beam, and a rolling assembly is located at the lower end of each sliding rod for frictional contact with the surface of the test specimen. A retaining spring is located between the rolling assembly and the mounting beam, and the retaining spring is sleeved on the sliding rod, with both ends fixed to the mounting beam and the rolling assembly, respectively. A rotation limiting assembly is located at the upper end of each sliding rod to limit its rotation. A synchronous pressure applying assembly is located in the center of the mounting beam to apply the same downward-moving pressure to the upper ends of two symmetrically arranged sliding rods.

2. The apparatus for determining the wear resistance of anti-skid coatings on ramps of roll-on / roll-off ships according to claim 1, characterized in that: The rolling assembly includes a mounting frame fixed to a sliding rod. The mounting frame has a rotating shaft, one end of which has a roller, and the other end of which has a second rotating element for driving the roller to rotate.

3. The apparatus for determining the wear resistance of anti-skid coatings on ramps of roll-on / roll-off ships according to claim 1, characterized in that: The rotation limiting assembly includes a connecting plate, the middle of which is fixed to a sliding rod, and two ends of the connecting plate are provided with light rods. One end of each light rod is fixed to a mounting beam, and the connecting plate is slidably connected to the light rod.

4. The apparatus for determining the wear resistance of anti-skid coatings on ramps of roll-on / roll-off ships according to claim 1, characterized in that: The mounting beam has symmetrical ear plates on the middle of both sides, and a screw is provided on the ear plate. The screw is threaded to the ear plate. The test bench has a limiting hole, and the end of the screw is inserted into the limiting hole.

5. The apparatus for determining the wear resistance of anti-skid coatings on ramps of roll-on / roll-off ships according to claim 1, characterized in that: The synchronous pressure application assembly includes symmetrically arranged wedge components, each comprising a first wedge, a second wedge, and a third wedge. The first wedge is fixed to the upper end of a sliding rod. The second and third wedges are symmetrically arranged, with the inclined surface of the second wedge fitting against the inclined surface of the first wedge. A connecting column is provided between the second and third wedges, and a vertical plate is provided on the connecting column. One end of the vertical plate is slidably connected to the connecting column, and the other end of the vertical plate is fixedly connected to an installation beam. The assembly also includes a fourth wedge located in the middle of the installation beam, with the inclined surfaces of the third and fourth wedges fitting against each other. The lower surface of the fourth wedge is provided with a telescopic element, which drives the fourth wedge to reciprocate in the vertical direction.

6. The apparatus for determining the wear resistance of anti-skid coatings on ramps of roll-on / roll-off ships according to claim 5, characterized in that: The connecting column is provided with a protruding ridge, and the upright plate is provided with a groove, with the protruding ridge slidably connected in the groove.

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