A strength testing device for rubber fenders

Abstract

The present invention relates to the technical field of rubber fenders, and specifically to a strength testing device for rubber fenders, comprising a housing, a base provided at the bottom, a butt plate and a telescopic press respectively installed at both ends of the base, the telescopic press being used to perform an extrusion test on the rubber fender; two mounting posts are provided side by side on the side of the butt plate facing the telescopic press, the rubber fender is located between the two mounting posts, each mounting post is provided with a rectangular groove, a slider is slidably installed inside the rectangular groove, a connecting post for connecting to the end of the rubber fender is fixedly installed on the slider, and a telescopic part for driving the slider to move up and down is fixedly installed on the side of each mounting post; wherein, an L-shaped limit plate is fixedly installed on the end face of each mounting post away from the butt plate. In the present invention, the use scenario of an inflatable rubber fender hoisted on the side of a dock can be simulated, and the strength of the rubber fender can be tested more realistically.

Description

Technical Field

[0001] The invention relates to the technical field of rubber fenders, and in particular to a strength testing device for rubber fenders. Background Art

[0002] Rubber fenders are commonly used anti-collision and buffer devices in ports, docks and ships. The strength test of rubber fenders is a key link to ensure that they can effectively absorb impact energy, resist environmental erosion and maintain long-term durability in actual use. Common rubber fenders generally include: D-type rubber fenders, V-type rubber fenders, cylindrical rubber fenders, etc. Some cylindrical rubber fenders are called inflatable fenders (inflatable rubber fenders). When in use, they are inflated and use gas compression to cushion the impact of the hull.

[0003] In the prior art, during the cushioning strength test of the pneumatic rubber fender, it is usually necessary to place the pneumatic rubber fender on a test platform, and then move a telescopic press downward to squeeze the pneumatic rubber fender. However, this test method cannot simulate the use state of the pneumatic rubber fender when it is installed at a dock or port (when installed at a dock or port, the pneumatic rubber fender will roll up or down when impacted and is hoisted to the side of the dock or port at both ends). This strength test method is not conducive to observing the strength of the pneumatic rubber fender during actual use. Summary of the Invention

[0004] Technical problems solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a strength testing device for a rubber fender, which can effectively solve the problem that in the prior art, during the buffer strength test of the inflatable rubber fender, the inflatable rubber fender usually needs to be placed on a test platform, and then a telescopic press is moved downward to squeeze the inflatable rubber fender. However, this testing method cannot simulate the use state of the inflatable rubber fender when it is installed at a dock or port. This strength testing method is not conducive to observing the strength of the inflatable rubber fender during actual use.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides a strength testing device for a rubber fender, comprising a housing, a base provided at the bottom, and an abutment plate and a telescopic press respectively installed at both ends of the base. The abutment plate is used to install and place the rubber fender, and the telescopic press is used to perform an extrusion test on the rubber fender.

[0009] Two mounting posts are arranged side by side and spaced apart on the side of the abutment plate facing the telescopic press, the rubber fender is located between the two mounting posts, each mounting post is provided with a rectangular groove, a slider is slidably mounted inside the rectangular groove, a connecting post for connecting to the end of the rubber fender is fixedly mounted on the slider, and a telescopic member for driving the slider to move up and down is fixedly mounted on the side of each mounting post;

[0010] Wherein, an L-shaped limiting plate is fixedly mounted on the end surface of each mounting post away from the abutment plate, and the L-shaped limiting plate is used to limit the rubber fender between the mounting post and the L-shaped limiting plate.

[0011] Furthermore, a support plate is fixedly installed above the telescopic member, one end of the support plate is inserted into the rectangular groove, a first elastic member is provided above the support plate, and the slider is fixedly installed above the first elastic member.

[0012] Furthermore, the lower side of the support plate away from the telescopic press is rotatably connected to the base through a rotating connection part, and two wedge-shaped limit plates are provided on the base, and the two wedge-shaped limit plates are respectively located at the two ends of the support plate. The end surfaces of the two wedge-shaped limit plates facing the support plate are provided with support grooves that are clamped on the support plate, and the two wedge-shaped limit plates are slidably connected to the base in the length direction of the support plate.

[0013] Furthermore, a guide block is provided on the base along the length direction of the abutment plate, and the bottom of the wedge-shaped limiting plate is slidably connected to the guide block.

[0014] Furthermore, a push plate is provided at the telescopic end of the telescopic press, and a guide rail is provided on the base for guiding the push plate to move toward the rubber fender. Guide plates are provided on both sides of the push plate, and guide grooves are provided on the guide plates. A guide shaft sliding inside the guide groove is provided on the wedge-shaped limit plate. After the push plate moves to a specified position toward the rubber fender, the guide groove drives the wedge-shaped limit plate to be clamped on both sides of the abutment plate through the guide shaft.

[0015] Furthermore, an extrusion plate is installed at intervals on the side of the push plate away from the telescopic press, and the extrusion plate is used to directly contact the rubber fender. The extrusion plate is connected to the push plate through a second elastic member. Two rotating plates are provided on both sides of the push plate to limit the distance between the extrusion plates. A release component is provided on the side of the push plate away from the extrusion plate to drive one end of the two rotating plates to move closer to or away from each other.

[0016] Furthermore, the middle part of the rotating plate is rotatably connected to the push plate, a card block is provided on the inner side of one end of the rotating plate facing the extrusion plate, the card block is vertically mounted on the rotating plate, and a card slot for the card block to slide into is provided on the side of the extrusion plate.

[0017] Furthermore, the release assembly includes two symmetrically arranged tilted rods distributed in an eight-shaped shape, the ends of the two tilted rods away from each other are respectively rotatably connected to the ends of the two rotating plates away from the extrusion plates, the tops of the two tilted rods are rotatably connected to each other, the lower ends of the two tilted rods are each provided with a vertical rod, and the lower ends of the two vertical rods are each fixedly installed with an electromagnetic block, which drives the lower ends of the two vertical rods away from each other when the two electromagnetic blocks are energized.

[0018] Furthermore, a guide slide shaft is fixedly installed inside the rectangular groove of the mounting column, and the guide slide shaft is used to guide the slider to move up and down.

[0019] Beneficial effects

[0020] Compared with the known public technologies, the technical solution provided by the present invention has the following beneficial effects:

[0021] 1. In the present invention, an abutment plate is provided on the base, and two mounting posts are spaced apart on the abutment plate. During the installation process, the rubber fender can be installed between two adjacent mounting posts. At the same time, since a slider is provided inside the mounting post and a telescopic member is provided to control the up and down movement of the slider, the rubber fender on the side of the abutment plate can simulate the use scenario of the inflatable rubber fender being hoisted on the side of the dock during the test, thereby more realistically testing the strength of the rubber fender.

[0022] 2. In the present invention, since an L-shaped limiting plate is provided on the side of the mounting post, the L-shaped limiting plate can limit the rubber fender on the connecting post during use. When the rubber fender needs to be removed, it can be achieved by retracting the telescopic member and sliding it downward to the opening below the L-shaped limiting plate. This can more efficiently complete the installation or removal of the rubber fender and increase the efficiency of the rubber fender strength test.

[0023] 3. In the present invention, since the telescopic member is provided to drive the rubber fender to move up and down, during the test, the telescopic member can drive the rubber fender to move up and down, which can simulate the use scenario of impact from above or below the rubber fender, further enriching the content of the rubber fender strength test and more comprehensively understanding the strength of the rubber fender.

[0024] 4. In the present invention, by rotatably mounting the abutment plate on the base, the abutment plate can be rotated to expose the side of the abutment plate on which the rubber fender is mounted when installing or removing the rubber fender, thereby making it easier to install or remove the rubber fender. In addition, by providing wedge-shaped limit plates on both sides of the abutment plate, the position of the abutment plate can be conveniently fixed during the strength test of the rubber fender, thereby preventing the abutment plate from rotating or shifting in position when subjected to impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 Schematic diagram of the internal structure of the present invention;

[0028] Figure 3 This is an exploded view of the overall structure of the abutment plate and the wedge-shaped limiting plate of the present invention;

[0029] Figure 4 Schematic diagram of the overall structure of the abutment plate of the present invention;

[0030] Figure 5 A top view of the present invention;

[0031] Figure 6 This is a schematic diagram of the overall structure of the extrusion plate of the present invention installed on the push plate;

[0032] Figure 7 This is a schematic diagram of the back structure of the push plate of the present invention;

[0033] Figure 8 It is a side view of the push plate of the present invention.

[0034] The numbers in the figure represent:

[0035] 1. Housing; 11. Base; 12. Rotating connection; 13. Wedge-shaped stopper; 131. Guide block; 132. Connecting plate; 133. Guide shaft; 14. Telescopic press; 15. Guide rail; 16. Push plate; 17. Rotating plate; 171. Clamping block; 18. Guide plate; 1801. Guide groove;

[0036] 2. Abutment plate; 21. Mounting column; 22. Slider; 221. Connecting column; 23. First elastic member; 24. Support plate; 25. Telescopic member; 26. L-shaped limit plate; 3. Rubber fender;

[0037] 4. Extrusion plate; 401. Card slot; 41. Second elastic member; 5. Release assembly; 51. Tilt rod; 52. Vertical rod; 53. Electromagnetic block. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] The present invention will be further described below with reference to the embodiments.

[0040] The dynamic performance test of the rubber fender usually includes an impact energy absorption test (simulating a ship collision by releasing the squeeze plate 4 and measuring the energy absorbed by the rubber fender 3 (in kJ / m³) and the reaction force value), a rebound resilience test (evaluating the recovery speed of the rubber fender 3 after impact to ensure that the rubber fender 3 can still maintain its shape and performance after multiple collisions with the squeeze plate 4) and a dynamic fatigue test (using a telescopic press 14 to apply cyclic loads and observe the performance degradation of the rubber fender 3 under repeated compression).

[0041] To this end, an embodiment of the present invention provides a strength testing device for a rubber fender, the purpose of which is at least to conveniently simulate the installation and use scenarios of the inflatable rubber fender, perform strength testing on the inflatable rubber fender under the simulated use scenarios, and more intuitively see the connection between the test data and the use status of the inflatable rubber fender.

[0042] Example: A strength testing device for rubber fenders, such as Figure 1 - Figure 4 As shown, it includes a shell 1, a base 11 is provided at the bottom, and a support plate 2 and a telescopic press 14 are respectively installed at both ends of the base 11. The support plate 2 is used to install and place the rubber fender 3, and the telescopic press 14 is used to perform an extrusion test on the rubber fender 3;

[0043] Two mounting posts 21 are arranged side by side on the side of the abutment plate 2 facing the telescopic press 14. The rubber fender 3 is located between the two mounting posts 21. Each mounting post 21 is provided with a rectangular groove. A slider 22 is slidably mounted inside the rectangular groove. A connecting post 221 for connecting to the end of the rubber fender 3 is fixedly mounted on the slider 22. A telescopic member 25 for driving the slider 22 to move up and down is fixedly mounted on the side of each mounting post 21.

[0044] An L-shaped limiting plate 26 is fixedly mounted on the end surface of each mounting post 21 away from the abutment plate 2 . The L-shaped limiting plate 26 is used to limit the rubber fender 3 between the mounting post 21 and the L-shaped limiting plate 26 .

[0045] In the present invention, by arranging a counter plate 2 on the base 11 and arranging two mounting posts 21 at intervals on the counter plate 2, the rubber fender 3 can be conveniently installed between two adjacent mounting posts 21 during the installation process. At the same time, since a slider 22 is provided inside the mounting post 21, and a telescopic member 25 is provided to control the up and down movement of the slider 22, the rubber fender 3 on the side of the counter plate 2 can simulate the use scenario of the inflatable rubber fender being hoisted on the side of the dock during the test, so as to more realistically test the strength of the rubber fender 3. In addition, since an L-shaped limiting plate 26 is provided on the side of the mounting post 21, the L-shaped limiting plate 26 can limit the rubber fender 3 on the connecting post 221 during use. When the rubber fender 3 needs to be removed, it can be achieved by retracting the telescopic member 25 and sliding it downward to the opening below the L-shaped limiting plate 26, so that the installation or removal of the rubber fender 3 can be completed more efficiently, and the efficiency of the strength test of the rubber fender 3 is increased.

[0046] In addition, since the telescopic member 25 is provided to drive the rubber fender 3 to move up and down, during the test, the telescopic member 25 can be used to drive the rubber fender 3 to move up and down, which can simulate the use scenario of an impact from above or below the rubber fender 3, further enriching the content of the strength test of the rubber fender 3 and providing a more comprehensive understanding of the strength of the rubber fender 3.

[0047] It should be noted that both ends of the rubber fender 3 are provided with connection ports, and the connection ports are rotatably connected to the ends of the rubber fender 3 .

[0048] Further, if Figure 3 As shown, a support plate 24 is fixedly installed above the telescopic member 25 , one end of the support plate 24 is inserted into the rectangular groove, a first elastic member 23 is provided above the support plate 24 , and the slider 22 is fixedly installed above the first elastic member 23 .

[0049] Among them, by arranging a support plate 24 inside the rectangular groove and arranging a first elastic member 23 (a coil spring can be selected) above the support plate 24, the rubber fender 3 can move up and down when subjected to impact, which is more in line with the use state of the rubber fender 3 during use and can further simulate the use scenario of the rubber fender 3.

[0050] Further, if Figure 2 and Figure 3 As shown, the lower side of the support plate 2 away from the telescopic press 14 is rotatably connected to the base 11 through a rotating connection part 12, and two wedge-shaped limit plates 13 are provided on the base 11. The two wedge-shaped limit plates 13 are respectively located at the two ends of the support plate 2, and the end surfaces of the two wedge-shaped limit plates 13 facing the support plate 2 are provided with support grooves that are clamped on the support plate 2. The two wedge-shaped limit plates 13 are slidably connected to the base 11 in the length direction of the support plate 2.

[0051] Among them, by rotatably installing the butt plate 2 on the base 11, it is more convenient to rotate the butt plate 2 when installing or removing the rubber fender 3 so that the side of the butt plate 2 on which the rubber fender 3 is installed is exposed, which can make it more convenient to install or remove the rubber fender 3. In addition, by arranging wedge-shaped limit plates 13 on both sides of the butt plate 2, the position of the butt plate 2 can be conveniently fixed during the strength test of the rubber fender 3, thereby preventing the butt plate 2 from rotating or shifting in position during the impact.

[0052] Furthermore, if Figure 3 As shown, a guide block 131 is provided on the base 11 along the length direction of the support plate 2, and the bottom of the wedge-shaped limit plate 13 is slidably connected to the guide block 131. By providing the guide block 131 on the base 11, the wedge-shaped limit plate 13 can be conveniently moved during the entire testing process, so that the wedge-shaped limit plate 13 can provide good support for the support plate 2 while also being conveniently away from the support plate 2 when the support plate 2 needs to be rotated.

[0053] Furthermore, if Figure 5 and Figure 6 As shown, the telescopic end of the telescopic press 14 is provided with a push plate 16, and the base 11 is provided with a guide rail 15 for guiding the push plate 16 to move toward the rubber fender 3. Guide plates 18 are provided on both sides of the push plate 16, and the guide plates 18 are provided with guide grooves 1801. The wedge-shaped limit plate 13 is provided with a guide shaft 133 sliding inside the guide groove 1801. After the push plate 16 moves to a specified position toward the rubber fender 3, the guide groove 1801 drives the wedge-shaped limit plate 13 to be clamped on both sides of the abutment plate 2 through the guide shaft 133.

[0054] Among them, by arranging guide plates 18 on both sides of the push plate 16, and arranging guide grooves 1801 on the guide plates 18, the guide grooves 1801 include a vertical portion and an inclined portion, the vertical portion is located close to the push plate 16 and is used to guide the wedge-shaped limiting plate 13 to be closely close to the abutment plate 2, and the inclined portion is used to guide the wedge-shaped limiting plate 13 toward or away from the abutment plate 2. When the rubber fender 3 on the abutment plate 2 needs to be removed, the push plate 16 is driven by the telescopic press 14 to move in a direction away from the rubber fender 3, so that the guide plates 18 can drive the wedge-shaped limiting plate 13 away from both sides of the abutment plate 2, so that the abutment plate 2 can be conveniently rotated to expose the rubber fender 3 as a whole.

[0055] It should be noted that a connecting plate 132 is provided on the wedge-shaped limiting plate 13 , and the guide shaft 133 is rotatably mounted on the connecting plate 132 .

[0056] Furthermore, if Figure 6 and Figure 7As shown, an extrusion plate 4 is installed at intervals on the side of the push plate 16 away from the telescopic press 14. The extrusion plate 4 is used to directly contact the rubber fender 3. The extrusion plate 4 is connected to the push plate 16 via a second elastic member 41. Two rotating plates 17 are provided on both sides of the push plate 16 for limiting the distance between the extrusion plate 4 and the push plate 16. A release assembly 5 is provided on the side of the push plate 16 away from the extrusion plate 4 for driving one end of the two rotating plates 17 to move closer to or away from each other.

[0057] Specifically, an extrusion plate 4 is provided on the push plate 16 and connected to the push plate 16 via a second elastic member 41 (a coil spring may be selected). During use, the extrusion plate 4 can be brought close to the push plate 16 and fixed via the rotating plate 17. After the push plate 16 moves close to the side of the rubber fender 3, the rotating plate 17 is driven to rotate by the release component 5, so that the rotating plate 17 releases the extrusion plate 4, allowing the extrusion plate 4 to accelerate toward the rubber fender 3, simulating a use scenario in which the rubber fender 3 is subjected to an impact load, and testing the strength of the rubber fender 3 under the impact load.

[0058] Furthermore, if Figure 5 and Figure 6 As shown, the middle part of the rotating plate 17 is rotatably connected to the push plate 16, and a block 171 is provided on the inner side of one end of the rotating plate 17 facing the extrusion plate 4. The block 171 is vertically installed on the rotating plate 17, and a slot 401 for the block 171 to slide into is provided on the side of the extrusion plate 4.

[0059] Among them, by arranging multiple rows of blocks 171 on the rotating plate 17, during the test, the extrusion plate 4 can be limited by locking the blocks 171 in the slots 401, which can simulate the use scenario of an impact load hitting the rubber fender 3.

[0060] Furthermore, if Figure 7 and Figure 8 As shown, the release assembly 5 includes two symmetrically arranged tilted rods 51 distributed in an eight-shaped pattern, the ends of the two tilted rods 51 away from each other are respectively rotatably connected to the ends of the two rotating plates 17 away from the extrusion plate 4, the upper parts of the two tilted rods 51 are rotatably connected to each other, the lower ends of the two tilted rods 51 are each provided with a vertical rod 52, and the lower ends of the two vertical rods 52 are each fixedly installed with an electromagnetic block 53, which drives the lower ends of the two vertical rods 52 away from each other when the two electromagnetic blocks 53 are energized.

[0061] Among them, by symmetrically setting two tilting rods 51, under normal conditions, the two electromagnetic blocks 53 on the two vertical rods 52 are close to each other and adsorbed. When it is necessary to clamp the extrusion plate 4, opposite currents can be passed through the two electromagnetic blocks 53 to make the two electromagnetic blocks 53 attract each other, so that the two rotating plates 17 away from the end of the extrusion plate 4 are close to each other, thereby achieving the purpose of releasing the extrusion plate 4.

[0062] Furthermore, a guide slide shaft is fixedly installed inside the rectangular groove of the mounting column 21, and the guide slide shaft is used to guide the slider 22 to move up and down. By arranging the guide slide shaft inside the rectangular groove, the guide slider 22 can be stabilized to move up and down, so that the rubber fender 3 can move up and down more stably.

[0063] Working principle: When the rubber fender 3 needs to be tested, the butt plate 2 is first rotated to the state where the mounting post 21 is facing upward, and the slider 22 is driven to retract by the telescopic member 25 so that the slider 22 slides to the opening of the L-shaped limit plate 26. At this time, the two ends of the rubber fender 3 can be conveniently fitted on the connecting post 221 for fixation. Then the telescopic member 25 is extended to drive the slider 22 to move upward so that the two ends of the rubber fender 3 are restricted to the inner side of the L-shaped limit plate 26. Then the butt plate 2 is adjusted to a vertical state, and the telescopic press 14 is moved toward the butt plate 2, so that the guide plate 18 guides the wedge-shaped limit plates 13 on both sides of the butt plate 2 to approach and press against the butt plate 2. Finally, the telescopic press 14 is driven to continue to approach the butt plate 2, and the push plate 16 on the telescopic press 14 squeezes the rubber fender 3 for strength testing.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A strength testing device for rubber fenders, characterized in that: include: The housing (1) has a base (11) at the bottom, and a support plate (2) and a telescopic press (14) are respectively installed at both ends of the base (11), the support plate (2) is used to install and place the rubber fender (3), and the telescopic press (14) is used to perform an extrusion test on the rubber fender (3); Two mounting posts (21) are arranged side by side and spaced apart on one side of the support plate (2) facing the telescopic press (14), the rubber fender (3) is located between the two mounting posts (21), each mounting post (21) is provided with a rectangular groove, a slider (22) is slidably mounted inside the rectangular groove, a connecting post (221) for connecting to the end of the rubber fender (3) is fixedly mounted on the slider (22), and a telescopic member (25) for driving the slider (22) to move up and down is fixedly mounted on the side of each mounting post (21); Wherein, an L-shaped limiting plate (26) is fixedly mounted on the end surface of each mounting column (21) away from the abutment plate (2), and the L-shaped limiting plate (26) is used to limit the rubber fender (3) between the mounting column (21) and the L-shaped limiting plate (26); A support plate (24) is fixedly mounted above the telescopic member (25), one end of the support plate (24) is inserted into the rectangular groove, a first elastic member (23) is provided above the support plate (24), and the slider (22) is fixedly mounted above the first elastic member (23); The lower side of the support plate (2) away from the telescopic press (14) is rotatably connected to the base (11) through a rotating connection portion (12), and two wedge-shaped limit plates (13) are provided on the base (11). The two wedge-shaped limit plates (13) are respectively located at two ends of the support plate (2), and the end surfaces of the two wedge-shaped limit plates (13) facing the support plate (2) are both provided with support grooves that are clamped on the support plate (2). The two wedge-shaped limit plates (13) are slidably connected to the base (11) in the length direction of the support plate (2).

2. A strength testing device for a rubber fender according to claim 1, characterized in that: A guide block (131) is provided on the base (11) along the length direction of the abutment plate (2), and the bottom of the wedge-shaped limiting plate (13) is slidably connected to the guide block (131).

3. A strength testing device for a rubber fender according to claim 2, characterized in that: The telescopic end of the telescopic press (14) is provided with a push plate (16), the base (11) is provided with a guide rail (15) for guiding the push plate (16) to move toward the rubber fender (3), and guide plates (18) are provided on both sides of the push plate (16). The guide plates (18) are provided with guide grooves (1801), and the wedge-shaped limiting plate (13) is provided with a guide shaft (133) sliding inside the guide groove (1801). After the push plate (16) moves to a specified position toward the rubber fender (3), the guide groove (1801) drives the wedge-shaped limiting plate (13) to be clamped on both sides of the abutment plate (2) through the guide shaft (133).

4. A strength testing device for a rubber fender according to claim 3, characterized in that: An extrusion plate (4) is installed at intervals on one side of the push plate (16) away from the telescopic press (14), and the extrusion plate (4) is used to directly contact the rubber fender (3). The extrusion plate (4) is connected to the push plate (16) through a second elastic member (41). Two rotating plates (17) are provided on both sides of the push plate (16) for limiting the distance between the extrusion plate (4) and the push plate (16). A release component (5) is provided on the side of the push plate (16) away from the extrusion plate (4) for driving one end of the two rotating plates (17) to move closer to or away from each other.

5. A strength testing device for a rubber fender according to claim 4, characterized in that: The middle portion of the rotating plate (17) is rotatably connected to the push plate (16), and a clamping block (171) is provided on the inner side of one end of the rotating plate (17) facing the extrusion plate (4). The clamping block (171) is vertically mounted on the rotating plate (17), and a clamping groove (401) for the clamping block (171) to slide into is provided on the side surface of the extrusion plate (4).

6. A strength testing device for a rubber fender according to claim 5, characterized in that: The release assembly (5) comprises two symmetrically arranged tilting rods (51) distributed in an eight-shaped pattern. The ends of the two tilting rods (51) that are away from each other are rotatably connected to the ends of the two rotating plates (17) that are away from the extrusion plate (4). The upper parts of the two tilting rods (51) are rotatably connected to each other. The lower ends of the two tilting rods (51) are each provided with a vertical rod (52). The lower ends of the two vertical rods (52) are each fixedly mounted with an electromagnetic block (53). When the two electromagnetic blocks (53) are energized, the lower ends of the two vertical rods (52) are driven to move away from each other.

7. The strength testing device for rubber fenders according to claim 1, characterized in that: A guide slide shaft is fixedly installed inside the rectangular groove of the mounting column (21), and the guide slide shaft is used to guide the slider (22) to move up and down.

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