A device for testing the fatigue strength of a rubber fender

Abstract

The utility model relates to rubber fender technical field, concretely is a kind of rubber fender fatigue strength testing device, including workbench, the upper surface of workbench is fixed with test bin, the upper side of test bin is fixedly installed with support frame, the middle part of support frame upper surface is fixedly inserted and is installed with hydraulic rod, the output end of hydraulic rod is fixedly installed with fixed frame, the inner surface of fixed frame is fixedly installed with motor, the lower surface of fixed frame is fixedly installed with fixed plate, the inner bottom of test bin is fixedly installed with reserve tank, the upper surface of reserve tank and the lower surface of fixed plate are fixedly installed with limit seat, the outer surface of the side close to between limit seat is all movably inserted and installed with carousel, the output end of motor is fixedly connected with carousel, and the inside surface of test bin is inserted and installed with buffer cavity in the middle part of one side, the utility model is favorable to the accuracy of rubber fender fatigue strength test.

Description

Technical Field

[0001] This utility model relates to the field of rubber fender technology, and more specifically, to a rubber fender fatigue strength testing device. Background Technology

[0002] Rubber fenders are a type of collision protection device widely used in ports and docks. They are mainly used to mitigate the impact between ships and docks or between ships, protecting ships and docks from damage. Rubber fenders are mainly made of rubber. During long-term use, the impact force between ships and docks will cause the rubber fenders to deform, and under the action of cyclic deformation, their performance will degrade and eventually fail. In order to evaluate the service life of rubber fenders, fatigue strength tests are required.

[0003] Current fatigue strength tests for rubber fenders primarily involve cyclic compression deformation to simulate the deformation process of the rubber fender acting as a buffer against impact forces between the ship and the dock, thus testing the fatigue strength of the rubber fender. However, when rubber fenders are used on docks, they come into contact with seawater during application, and seawater will corrode the rubber fenders. Relying solely on cyclic compression deformation for fatigue strength testing of rubber fenders introduces testing errors and is not conducive to assessing the service life of the rubber fenders.

[0004] Based on this, a fatigue strength testing device for rubber fenders is proposed. Summary of the Invention

[0005] The main objective of this invention is to provide a fatigue strength testing device for rubber fenders to overcome the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides a rubber fender fatigue strength testing device, including a workbench, a test chamber fixedly provided on the upper surface of the workbench, a support frame fixedly installed above the test chamber, a hydraulic rod fixedly inserted and installed in the middle of the upper surface of the support frame, a fixed frame fixedly installed at the output end of the hydraulic rod, a motor fixedly clamped and installed on the inner surface of the fixed frame, and a fixed plate fixedly installed on the lower surface of the fixed frame.

[0007] A storage box is fixedly installed on the inner bottom surface of the test chamber. Limiting seats are fixedly installed on the upper surface of the storage box and the lower surface of the fixing plate. Turntables are movably embedded on the outer surfaces of the adjacent sides of the limiting seats. The output end of the motor passes through the fixing plate and is fixedly connected to the turntable.

[0008] A buffer chamber is inserted through the middle of one side of the inner surface of the test chamber, and a water pump is fixedly installed on the lower part of one side of the outer surface of the test chamber. Both ends of the water pump are fixedly installed with guide pipes, and the other ends of the guide pipes are respectively connected to the storage tank and the buffer chamber.

[0009] As a further improvement of this utility model, support rods are fixedly installed at the four corners of the upper surface of the workbench, and the other end of the support rods is fixedly connected to the four corners of the lower surface of the support frame. Doors are installed on both sides of the front end of the outer surface of the test chamber via hinges.

[0010] As a further improvement of this utility model, several flow guide holes are provided through the four corners of the upper surface of the storage tank.

[0011] As a further improvement of this utility model, a plurality of spray nozzles are evenly distributed on the outer surface of the buffer cavity near the test chamber.

[0012] As a further improvement of this utility model, a limiting block is provided in the middle of the outer surface of each turntable on the side closest to each other.

[0013] The beneficial effects of this utility model are:

[0014] This invention allows for cyclic compression deformation of a cylindrical rubber fender to simulate the deformation process of the rubber fender acting as a buffer against impact forces between a ship and a dock, thereby enabling the testing of the fatigue strength of the rubber fender. During the test, seawater is uniformly sprayed onto the surface of the rubber fender to simulate the effect of seawater erosion on the rubber fender in actual applications. This, combined with the cyclic compression deformation during the test, achieves the purpose of testing the fatigue strength of the rubber fender, which helps to improve the accuracy of the fatigue strength test of the rubber fender. Attached Figure Description

[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0016] Figure 1 This is a front three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a cross-sectional schematic diagram of the test chamber structure of this utility model;

[0018] Figure 3 This is a disassembled sectional view of the limiting seat structure of this utility model.

[0019] In the diagram: 1. Workbench; 101. Test chamber; 102. Support rod; 103. Support frame; 104. Chamber door; 2. Hydraulic rod; 201. Fixing frame; 202. Fixing plate; 3. Motor; 4. Limit seat; 401. Turntable; 5. Storage tank; 501. Guide hole; 6. Water pump; 601. Guide pipe; 7. Buffer chamber; 701. Injection nozzle. Detailed Implementation

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] To make the objectives and advantages of this utility model clearer, the utility model will be further described below with reference to the embodiments; it should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0024] Please see Figures 1-3 As shown, a fatigue strength testing device for rubber fenders includes a workbench 1, a test chamber 101 fixedly mounted on the upper surface of the workbench 1, and a chamber door 104 movably mounted on both sides of the front end of the outer surface of the test chamber 101 via hinges. A support frame 103 is fixedly mounted above the test chamber 101, and support rods 102 are fixedly mounted at the four corners of the upper surface of the workbench 1. The other end of the support rods 102 is fixedly connected to the four corners of the lower surface of the support frame 103.

[0025] It should be noted that the rubber fender is placed inside the test chamber 101 for fatigue strength testing. The test chamber 101 is made of transparent glass, allowing a clear view of the changes in the rubber fender during the test.

[0026] A hydraulic rod 2 is fixedly inserted and installed in the middle of the upper surface of the support frame 103. A fixed frame 201 is fixedly installed at the output end of the hydraulic rod 2. A motor 3 is fixedly installed on the inner surface of the fixed frame 201. A fixed plate 202 is fixedly installed on the lower surface of the fixed frame 201.

[0027] It should be noted that by setting the output force of the hydraulic rod 2, the fixed frame 201 is raised and lowered, thereby driving the fixed plate 202 to squeeze the rubber fender in the test chamber 101, so as to simulate the deformation process of the rubber fender acting on the buffer impact between the ship and the dock, and achieve the test effect of the fatigue strength of the rubber fender.

[0028] A storage tank 5 is fixedly installed on the inner bottom surface of the test chamber 101. Several guide holes 501 are opened through the four corners of the upper surface of the storage tank 5. Limiting seats 4 are fixedly installed on the upper surface of the storage tank 5 and the lower surface of the fixing plate 202. Turntables 401 are movably embedded in the outer surfaces of the adjacent sides of the limiting seats 4. The output end of the motor 3 is fixedly connected to the turntables 401 through the fixing plate 202. Limiting blocks are protruding from the middle of the outer surfaces of the adjacent sides of the turntables 401.

[0029] It should be noted that all parts of the testing device that come into contact with seawater are coated with anti-corrosion paint to prevent corrosion during the storage of seawater. One end of the cylindrical rubber fender is inserted into the turntable 401 on the upper surface of the storage tank 5, where the limiting seat 4 is set. The fixing frame 201 is lowered by the hydraulic rod 2, which drives the limiting seat 4 connected to the fixing plate 202 to descend. The turntable 401 on the lowering limiting seat 4 is aligned with the other end of the cylindrical rubber fender and inserted. After the insertion is completed, the rubber fender and the turntable 401 are fixed by the limiting block.

[0030] Motor 3 controls one of the turntables 401 to rotate. When the rubber fender and the turntable 401 are in a limited and fixed state, the rotation of the turntable 401 can drive the rubber fender to rotate. While ensuring that the deformation state of the outer surface of the rubber fender is displayed evenly, seawater can be sprayed evenly to simulate the use environment of the rubber fender at the dock.

[0031] A buffer chamber 7 is inserted through the middle of one side of the inner surface of the test chamber 101. Several spray nozzles 701 are evenly distributed on the outer surface of the side of the buffer chamber 7 near the test chamber 101. A water pump 6 is fixedly installed on the lower part of one side of the outer surface of the test chamber 101. Both ends of the water pump 6 are fixedly installed with guide pipes 601. The other end of the guide pipes 601 is connected to the storage tank 5 and the buffer chamber 7 respectively.

[0032] It should be noted that the seawater in the storage tank 5 is drawn out by the water pump 6 in conjunction with the guide pipe 601 and introduced into the buffer chamber 7. It is then sprayed evenly onto the outer surface of the rubber fender through the spray nozzle 701 to simulate the effect of the rubber fender in the dock environment. The seawater sprayed onto the surface of the rubber fender will settle to the upper surface of the storage tank 5 and flow back into the storage tank 5 through the guide holes 501 opened at the four corners of the upper surface of the storage tank 5, so as to achieve the effect of storing seawater for recycling.

[0033] When using this utility model, one end of the cylindrical rubber fender can first be inserted into the turntable 401 located on the lower limit seat 4 on the inner surface of the test chamber 101. At this time, the hydraulic rod 2 can be activated to set the output force to extend and control the fixing frame 201 to descend, thereby driving the limit seat 4 connected to the fixing plate 202 to descend. The turntable 401 on the descending limit seat 4 is then aligned with the other end of the cylindrical rubber fender and inserted. After the insertion is completed, the rubber fender and the turntable 401 are fixed by the limit block.

[0034] At this time, the motor 3 can be started to control the turntable 401 connected to it to rotate clockwise. When the rubber fender and the turntable 401 are in the limited fixed state, the rotation of the turntable 401 can drive the rubber fender to rotate, thereby fully displaying the outer surface of the rubber fender. This is beneficial to timely detect the damage to the surface of the rubber fender caused by the test. At the same time, during the rotation of the rubber fender driven by the turntable 401, the water pump 6 is started in conjunction with the guide pipe 601 to draw seawater from the storage tank 5 and introduce it into the buffer chamber 7. It is then evenly sprayed onto the outer surface of the rubber fender through the spray nozzle 701 to simulate the effect of the rubber fender in the dock environment. The seawater sprayed onto the surface of the rubber fender will sink to the upper surface of the storage tank 5 and flow back into the storage tank 5 through the guide holes 501 opened at the four corners of the upper surface of the storage tank 5.

[0035] Secondly, as the hydraulic rod 2 continues to extend and advance, it compresses the rubber fender that is spraying seawater between the two sets of turntables 401 to simulate the deformation process of the rubber fender acting as a buffer against the impact between the ship and the dock, and repeatedly tests the fatigue strength of the rubber fender.

[0036] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A fatigue strength testing device for rubber fenders, comprising a workbench (1), wherein a test chamber (101) is fixedly disposed on the upper surface of the workbench (1), and a support frame (103) is fixedly installed above the test chamber (101), characterized in that, A hydraulic rod (2) is fixedly inserted into the middle of the upper surface of the support frame (103), and a fixing frame (201) is fixedly installed at the output end of the hydraulic rod (2). A motor (3) is fixedly installed on the inner surface of the fixing frame (201), and a fixing plate (202) is fixedly installed on the lower surface of the fixing frame (201). A storage box (5) is fixedly installed on the inner bottom surface of the test chamber (101). Limiting seats (4) are fixedly installed on the upper surface of the storage box (5) and the lower surface of the fixing plate (202). Turntables (401) are movably embedded on the outer surfaces of the adjacent sides of the limiting seats (4). The output end of the motor (3) passes through the fixing plate (202) and is fixedly connected to the turntable (401). A buffer chamber (7) is inserted through the middle of one side of the inner surface of the test chamber (101). A water pump (6) is fixedly installed on the lower part of one side of the outer surface of the test chamber (101). Both ends of the water pump (6) are fixedly installed with guide pipes (601). The other end of the guide pipes (601) is connected to the storage tank (5) and the buffer chamber (7) respectively.

2. The fatigue strength testing device for rubber fenders according to claim 1, characterized in that, Support rods (102) are fixedly installed at the four corners of the upper surface of the workbench (1). The other end of the support rods (102) is fixedly connected to the four corners of the lower surface of the support frame (103). The front sides of the outer surface of the test chamber (101) are equipped with chamber doors (104) by hinges.

3. The fatigue strength testing device for rubber fenders according to claim 1, characterized in that, The storage tank (5) has several flow guide holes (501) through the four corners of its upper surface.

4. The fatigue strength testing device for rubber fenders according to claim 1, characterized in that, The buffer chamber (7) has several spray nozzles (701) evenly distributed on the outer surface of the side near the test chamber (101).

5. The fatigue strength testing device for rubber fenders according to claim 1, characterized in that, Each of the turntables (401) has a limiting block protruding from the middle of the outer surface of the side closest to each other.

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