A strength testing device for ship parts

Abstract

The present invention discloses a strength testing device for ship parts, which relates to the technical field of strength testing, and includes a tensile testing machine, one side of the tensile testing machine is fixedly connected with a fixed plate, the other side of the tensile testing machine is fixedly connected with a slide rail symmetrically distributed along the tensile testing machine, a slide plate is horizontally slidably connected between the symmetrically distributed slide rails, and the side of the tensile testing machine close to the slide plate is fixedly connected with a first electric push rod symmetrically distributed along the tensile testing machine. The present invention controls the first mounting frame to gradually move to the left by the first electric push rod, so as to implement a tensile strength test on the anchor chain. On this basis, by controlling the second electric push rod to alternately extend and retract back and forth in a small amplitude, the turn plate drives the anchor chain to swing back and forth, and drives the anchor chain to twist back and forth, so that the anchor chain simultaneously performs tensile, swinging and torsion strength test modes, which more realistically and dynamically simulates the working environment of the anchor chain, making the test results more representative.

Description

Technical Field

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

[0002] Strength testing of ship parts is one of the key links to ensure navigation safety, especially for anchor chains that bear huge tensile forces. The strength test of ship anchor chains is designed to accurately evaluate the load-bearing capacity of anchor chains under extreme conditions and prevent breakage accidents in severe sea conditions.

[0003] Although the traditional anchor chain strength and fatigue testing tensile machine can provide basic tensile mechanical performance indicators during testing, it ignores the complex dynamic load effects that the anchor chain actually bears in the marine environment. The anchor chain in the marine environment not only has to withstand huge static loads, such as the pulling force of the ship, but also has to withstand the lateral thrust and torsional force generated by the anchor chain, causing the anchor chain to swing and twist.

[0004] Based on the above situation, the present invention proposes a strength testing device for ship parts. Summary of the invention

[0005] In order to overcome the shortcoming that the traditional tensile machine fails to take into account the need for the anchor chain to withstand lateral thrust and torsion, the purpose of the present invention is to provide a strength testing device for ship parts.

[0006] A strength testing device for ship parts, comprising a tensile testing machine, one side of the tensile testing machine is fixedly connected to a fixed plate, the other side of the tensile testing machine is fixedly connected to slide rails symmetrically distributed along the tensile testing machine, a slide plate is horizontally slidably connected between the symmetrically distributed slide rails, a first electric push rod symmetrically distributed along the tensile testing machine is fixedly connected to one side of the tensile testing machine close to the slide plate, a support column is fixedly connected between the first electric push rod and the fixed plate, a display screen for displaying test data is fixedly connected to the slide plate, a first mounting frame is fixedly connected to the middle of the slide plate, and the tensile testing machine is fixedly connected to the first electric push rod. A second electric push rod is fixedly connected to one side of the force machine close to the fixed plate, a slide is fixedly connected to the telescopic end of the second electric push rod, the slide is slidably connected to the fixed plate, the slide is fixedly connected to a second mounting frame, the second mounting frame is rotatably connected to a rotating plate, the first mounting frame and the rotating plate are respectively used to install and fix the two ends of the anchor chain, the fixed plate is rotatably connected to a rotating frame, a pressure frame is arranged on the rotating frame, the pressure frame is in contact with the rotating plate, guide plates symmetrically distributed along the rotating frame are arranged in the rotating frame, and the end surface of the guide plate is in contact with the slide.

[0007] Further description is made, and a torsion spring is also included, and two ends of the torsion spring are respectively fixedly connected to the rotating frame and the fixing plate.

[0008] Further description, it also includes a first clamping rod symmetrically distributed along the rotating frame, the first clamping rod is slidably connected to the rotating frame, the first clamping rod is in contact with the fixed plate, the fixed plate has rectangular grooves symmetrically distributed along the fixed plate, the rectangular grooves are used to limit the adjacent first clamping rods, and a first spring is fixedly connected between the first clamping rod and the rotating frame.

[0009] It is further explained that the guide plate is slidably connected to the rotating frame, and the guide plate is provided with an oblique groove. When the first clamping rod slides toward a side close to the rectangular groove, the first clamping rod squeezes the guide plate to slide outward through the oblique groove.

[0010] It is further explained that the first mounting bracket and the slide plate are fixedly connected by bolts, and the second mounting bracket and the slide frame are also fixedly connected by bolts.

[0011] Further description, it also includes a second clamping rod, which is slidably connected to the tensile machine, and the side of the second clamping rod close to the fixed plate is squeezed and matched with the pressure frame, the rotating frame is fixedly connected to a fixed rod, the fixed rod is slidably connected to the pressure frame, the rotating frame is slidably connected to the pressure frame, and a tension spring is fixedly connected between the pressure frame and the fixed rod.

[0012] Further description, it also includes a card frame symmetrically distributed along the rotating plate, the card frame is slidably connected to the rotating plate, the second mounting frame has a card slot symmetrically distributed along the second mounting frame, the card slot is used to limit the adjacent card frame, and a second spring is fixedly connected between the card frame and the rotating plate.

[0013] Further description, it also includes wedge blocks symmetrically distributed along the pressing frame, the wedge blocks are fixedly connected to the pressing frame, and the wedge blocks are pressed and matched with the adjacent clamping frames.

[0014] Further description, it also includes a support frame, which is slidably connected to the middle of the tensile machine, and the support frame is used to support the anchor chain.

[0015] It is further described that the support frame is extrusion-fitted with the first clamping rod.

[0016] The beneficial effect is that the present invention controls the first mounting frame to move gradually to the left through the first electric push rod, thereby realizing a tensile strength test on the anchor chain, and on this basis, controls the second electric push rod to extend and retract alternately back and forth in a small amplitude, so that the turn plate drives the anchor chain to swing back and forth, and drives the anchor chain to twist back and forth, so that the anchor chain is subjected to tensile, swinging and torsional strength test modes at the same time, simulating the working environment of the anchor chain more realistically and dynamically, and making the test results more representative.

[0017] The present invention can control the second electric push rod to drive the slide frame to slide forward or backward significantly before installing the anchor chain, so as to quickly switch to a strength test mode that only performs tensile and swing tests. In this way, the strength of the anchor chain under different test conditions can be tested through rapid switching of multiple test modes, which is beneficial to comparative analysis of subsequent test results.

[0018] The present invention prepares for anchor chain installation by moving the first mounting frame to the right, so that the pressing frame is separated from the rotating plate, which facilitates the disassembly and replacement of the first mounting frame and the rotating plate that match the anchor chain model.

[0019] The present invention allows the clamping frame to slide rightward and clamp into the clamping groove when the pressing frame is upwardly separated from the rotating plate, so that the rotating plate is fixed on the second mounting frame before the anchor chain is installed, so that the rotating plate is kept horizontal, and the rotating plate is prevented from being deflected when the anchor chain is installed, thereby affecting the subsequent test results.

[0020] The present invention moves the second clamping rod to the right so that the support frame slides upward to contact the anchor chain, thereby supporting the anchor chain during installation. The second clamping rod moves to the left so that the support frame is separated from the anchor chain during testing, thereby avoiding affecting the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the tensile machine, fixed plate, slide rail and other components of the present invention.

[0023] Figure 3 This is a three-dimensional structural separation diagram of the slide, the second mounting frame and the rotating plate of the present invention.

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the rotating frame, the pressing frame, the torsion spring and other components of the present invention.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the guide plate, the first clamping rod, the first spring and other components of the present invention.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the guide plate of the present invention.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the second clamping rod, the fixing rod, the tension spring and other components of the present invention.

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the wedge block, the bracket, the second spring and other components of the present invention.

[0029] Fig. 9It is a schematic diagram of the three-dimensional structure of the tensile machine, the second clamping rod and the support frame of the present invention.

[0030] The markings of the components in the accompanying drawings are as follows: 1: tensile testing machine, 101: anchor chain, 2: fixed plate, 3: slide rail, 4: slide plate, 5: first electric push rod, 6: support column, 7: display screen, 8: first mounting frame, 9: second electric push rod, 10: slide frame, 11: second mounting frame, 12: rotating plate, 13: rotating frame, 14: pressure frame, 15: torsion spring, 16: guide plate, 17: first clamping rod, 171: rectangular groove, 172: oblique groove, 18: first spring, 19: second clamping rod, 20: fixed rod, 21: tension spring, 22: wedge block, 23: clamping frame, 231: clamping groove, 24: second spring, 25: support frame. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 creative work are within the scope of protection of the present invention.

[0032] Embodiment 1: A strength testing device for ship parts, combined with the attached Figure 1 To Attachment Figure 6, including a tensile machine 1, a fixed plate 2 is fixedly connected to the right side of the tensile machine 1, a slide rail 3 symmetrically distributed along the front and back of the tensile machine 1 is fixedly connected to the left side of the tensile machine 1, a slide plate 4 is slidably connected between the slide rails 3 symmetrically distributed along the front and back of the tensile machine 1 along the left and right directions, a first electric push rod 5 symmetrically distributed along the front and back of the tensile machine 1 is fixedly connected to the side of the tensile machine 1 close to the slide plate 4, a support column 6 is fixedly connected between the right side of the first electric push rod 5 and the fixed plate 2 by bolts, a display screen 7 for displaying test data is fixedly connected to the front side of the slide plate 4, and a display screen 7 for displaying test data is fixedly connected to the middle of the slide plate 4 A first mounting frame 8 is fixedly connected by bolts, a second electric push rod 9 is fixedly connected to the front right side of the tensile machine 1, a slide 10 is fixedly connected to the telescopic end of the second electric push rod 9, the slide 10 is slidably connected to the fixed plate 2, the slide 10 is fixedly connected to the second mounting frame 11 by bolts, the left side of the second mounting frame 11 is rotatably connected to a rotating plate 12, the first mounting frame 8 and the rotating plate 12 are respectively used to install and fix the left and right ends of the anchor chain 101, a rotating frame 13 is rotatably connected to the upper middle of the fixed plate 2, and a pressing frame 1 is slidably connected to the rotating frame 13 4. The friction between the pressure frame 14 and the rotating frame 13 is relatively large. The middle of the upper part of the pressure frame 14 contacts the top of the rotating plate 12, which is used to drive the rotating plate 12 to rotate, thereby driving the anchor chain 101 to twist. The rotating frame 13 is slidably connected with a guide plate 16 symmetrically distributed along the front and back of the rotating frame 13. The end surface of the guide plate 16 contacts the slide 10. A torsion spring 15 is fixedly connected between the rotating frame 13 and the fixed plate 2. The rotating frame 13 is slidably connected with a first clamping rod 17 symmetrically distributed along the front and back of the rotating frame 13. The left end of the first clamping rod 17 contacts the right wall of the fixed plate 2. A rectangular groove 171 is opened on one side of the fixed plate 2 close to the first clamping rod 17 and is symmetrically distributed along the front and back of the fixed plate 2. When the first clamping rod 17 rotates to align with the adjacent rectangular groove 171, the rectangular groove 171 is used to limit the adjacent first clamping rod 17. An oblique groove 172 is opened on the side of the guide plate 16 close to the adjacent first clamping rod 17. When the first clamping rod 17 slides toward the side close to the rectangular groove 171, the first clamping rod 17 squeezes the guide plate 16 to slide outward through the oblique groove 172. A first spring 18 is fixedly connected between the first clamping rod 17 and the rotating frame 13.

[0033] First, the first electric push rod 5 is controlled to shorten to the right, so that the first mounting frame 8 moves to the right, shortening the distance between the first mounting frame 8 and the rotating plate 12, so that the anchor chain 101 to be tested can be installed between the first mounting frame 8 and the rotating plate 12 through the pins. After installation, the tensile testing machine 1 is started, and the first electric push rod 5 is controlled to gradually extend to the left, so as to drive the slide plate 4 to slide gradually to the left along the slide rail 3, thereby driving the first mounting frame 8 to move gradually to the left, so that the anchor chain 101 is gradually stretched to the left, and the data changes on the display screen 7 are monitored in real time until the anchor chain 101 reaches the expected maximum load. During this process, the tensile testing machine 1 automatically records key data points, so that the tensile strength test of the anchor chain 101 is realized;

[0034] On the basis of the above, in order to simulate a more realistic dynamic working environment of the anchor chain 101, the second electric push rod 9 can be controlled to extend slightly forward and backward alternately while controlling the first electric push rod 5 to extend to the left, thereby driving the slide 10 to slide slightly forward or backward along the fixed plate 2, and then driving the second mounting frame 11 to move slightly forward or backward, and then driving the rotating plate 12 to move slightly forward or backward, so that the anchor chain 101 will swing back and forth while being stretched to the left. At the same time, when the slide 10 slides forward or backward, it will squeeze the rotating frame 13 to rotate slightly clockwise or counterclockwise alternately through the guide plate 16, thereby driving the pressure frame 14 to rotate slightly clockwise or counterclockwise alternately, and the torsion spring 15 adaptively deforms and resets, and the pressure frame 14 pushes the rotating plate 12 to rotate slightly clockwise or counterclockwise alternately, so that the anchor chain 101 will also twist. In this way, the anchor chain 101 is subjected to tensile, swinging and torsional strength tests at the same time.

[0035] In summary, the present invention controls the first mounting frame 8 to gradually move leftward through the first electric push rod 5, so as to implement a tensile strength test on the anchor chain 101. On this basis, by controlling the second electric push rod 9 to extend and retract back and forth in a small range alternately, the turn plate 12 drives the anchor chain 101 to swing back and forth, and drives the anchor chain 101 to twist back and forth, so that the anchor chain 101 is subjected to tensile, swinging and torsional strength test modes at the same time, which simulates the working environment of the anchor chain 101 more realistically and dynamically, and makes the test result more representative.

[0036] If only the tensile strength test and the swing strength test need to be performed on the anchor chain 101 at the same time, before installing the anchor chain 101, the second electric push rod 9 is first controlled to drive the slide 10 to slide forward or backward significantly, so that the slide 10 squeezes the rotating frame 13 through the guide plate 16 to rotate clockwise or counterclockwise significantly, so that one of the guide plates 16 swings upward and the other guide plate 16 swings downward, and the rotating frame 13 drives the first clamping rod 17 and the first spring 18 to rotate clockwise or counterclockwise synchronously, and when the first clamping rod 17 on the side of the guide plate 16 that swings downward rotates to correspond to the rectangular groove 171 on the same side, the first spring 18 on the same side resets and drives the first clamping rod 17 on this side to slide to the left and be clamped in the rectangular groove 171 on the same side, and when the first clamping rod 17 on the side of the guide plate 16 that swings upward rotates to disengage from the fixed plate 2, the first clamping rod 17 on the same side The first spring 18 is reset to drive the first clamping rod 17 on this side to slide to the left. The sliding of the first clamping rod 17 to the left will squeeze the guide plate 16 through the inclined groove 172 to slide outward along the rotating frame 13. Subsequently, the anchor chain 101 is installed between the first mounting frame 8 and the rotating plate 12, and the tensile machine 1 is started to control the first electric push rod 5 to gradually extend to the left, and at the same time control the second electric push rod 9 to drive the slide 10 to slide slightly toward the side of the guide plate 16 that swings upward, and then slide slightly in the opposite direction to the initial position, and repeat this alternately. In this process, since the slide 10 only slides toward the side of the guide plate 16 that swings upward, the slide 10 will not contact the guide plate 16 on this side when sliding, and thus will not perform the subsequent operation of driving the anchor chain 101 to twist. In this way, the anchor chain 101 can be controlled to only perform tensile and swing strength tests.

[0037] In summary, before installing the anchor chain 101, the present invention can control the second electric push rod 9 to drive the slide 10 to slide forward or backward significantly, so as to quickly switch to a strength test mode that only performs tensile and swing tests. In this way, by quickly switching between multiple test modes, the strength of the anchor chain 101 under different test conditions can be tested, which is beneficial to the comparative analysis of subsequent test results.

[0038] Embodiment 2: Based on embodiment 1, Figure 7 , and also includes a second clamping rod 19, which is slidably connected to the tensile machine 1, and the right side of the second clamping rod 19 is squeezed and matched with the pressure frame 14. The left side of the rotating frame 13 is fixedly connected with a fixing rod 20, and the fixing rod 20 is slidably connected to the pressure frame 14. A tension spring 21 is fixedly connected between the pressure frame 14 and the fixing rod 20. When the tension spring 21 is reset, the pressure frame 14 slides upward to be separated from the rotating plate 12, so as to facilitate the disassembly and replacement of the second mounting frame 11.

[0039] When the first mounting frame 8 moves to the right, the first mounting frame 8 drives the second clamping rod 19 to move to the right, so that the second clamping rod 19 is disengaged from the pressure frame 14, and the tension spring 21 in the stretched state is reset to drive the pressure frame 14 to slide upward, so that the pressure frame 14 is disengaged from the rotating plate 12. At this time, if it is necessary to replace the first mounting frame 8 and the rotating plate 12 that match the anchor chain 101 model, the bolts can be unscrewed so that the first mounting frame 8 and the second mounting frame 11 can be removed from the slide plate 4 and the fixed plate 2 respectively for replacement, and then the anchor chain 101 can be installed. After the anchor chain 101 is installed, the first mounting frame 8 drives the second clamping rod 19 to move to the left, and the second clamping rod 19 contacts the pressure frame 14. Under the squeezing effect of the second clamping rod 19, the pressure frame 14 slides downward to press the rotating plate 12, and the tension spring 21 is stretched.

[0040] In summary, the present invention moves the first mounting frame 8 to the right to prepare for the installation of the anchor chain 101, so that the pressing frame 14 is separated from the rotating plate 12, which facilitates the disassembly and replacement of the first mounting frame 8 and the rotating plate 12 matching the model of the anchor chain 101.

[0041] Embodiment 3: Based on Embodiment 2, Figure 8 , and also includes a wedge block 22 symmetrically distributed along the front and back of the pressure frame 14, the wedge block 22 is fixedly connected to the pressure frame 14, the rotating plate 12 is slidably connected to a bracket 23 symmetrically distributed along the front and back of the rotating plate 12 in the up and down direction, the wedge block 22 is squeezed and matched with the adjacent bracket 23, and a bracket groove 231 symmetrically distributed along the front and back of the second mounting frame 11 is opened on the left side of the second mounting frame 11, the bracket groove 231 is used to limit the adjacent bracket 23, and a second spring 24 is fixedly connected between the bracket 23 and the rotating plate 12.

[0042] When the pressing frame 14 is upwardly separated from the rotating plate 12, the wedge block 22 is driven to move upward, and the wedge block 22 is separated from the clamping frame 23. The second spring 24 in the compressed state is reset to drive the clamping frame 23 to slide rightward and clamp into the clamping groove 231. That is, before installing the anchor chain 101, the rotating plate 12 is fixed on the second mounting frame 11, so that the rotating plate 12 is kept horizontal, so as to avoid the rotating plate 12 from deflecting when installing the anchor chain 101, thereby affecting the subsequent test results;

[0043] When the pressing frame 14 slides downward and presses the rotating plate 12, the wedge block 22 is driven to move downward, and the wedge block 22 squeezes the bracket 23 to slide to the left, and the second spring 24 is compressed, so that the bracket 23 is disengaged from the slot 231, that is, in the subsequent test, the rotating plate 12 is restored to a rotatable state.

[0044] Combined with Fig. 9 , and also includes a support frame 25, which is slidably connected to the middle of the tensile machine 1 along the up and down directions. The support frame 25 is used to support the anchor chain 101 during installation, and the support frame 25 is squeezed and matched with the first clamping rod 17.

[0045] When the second clamping rod 19 moves to the right, it will squeeze the support frame 25 to slide upward until it contacts the anchor chain 101, thereby supporting the anchor chain 101 during the installation process. When the second clamping rod 19 moves to the left, the second clamping rod 19 is separated from the support frame 25, and the support frame 25 slides downward and resets under the action of gravity, that is, during the test, the support frame 25 is separated from the anchor chain 101 to avoid affecting the test results.

[0046] The present invention has been introduced in detail above. Specific examples are used in the present invention to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A strength testing device for ship parts, characterized in that: include: A tensile testing machine (1), wherein one side of the tensile testing machine (1) is fixedly connected to a fixed plate (2), the other side of the tensile testing machine (1) is fixedly connected to slide rails (3) symmetrically distributed along the tensile testing machine (1), a slide plate (4) is horizontally slidably connected between the symmetrically distributed slide rails (3), a side of the tensile testing machine (1) close to the slide plate (4) is fixedly connected to a first electric push rod (5) symmetrically distributed along the tensile testing machine (1), a support column (6) is fixedly connected between the first electric push rod (5) and the fixed plate (2), a display screen (7) for displaying test data is fixedly connected to the slide plate (4), a first mounting frame (8) is fixedly connected in the middle of the slide plate (4), and a second electric push rod (5) is fixedly connected to the side of the tensile testing machine (1) close to the fixed plate (2) A push rod (9), the telescopic end of the second electric push rod (9) is fixedly connected to a slide frame (10), the slide frame (10) is slidably connected to the fixed plate (2), the slide frame (10) is fixedly connected to a second mounting frame (11), the second mounting frame (11) is rotatably connected to a rotating plate (12), the first mounting frame (8) and the rotating plate (12) are respectively used to mount and fix the two ends of the anchor chain (101), the fixed plate (2) is rotatably connected to a rotating frame (13), a pressing frame (14) is arranged on the rotating frame (13), the pressing frame (14) is in contact with the rotating plate (12), the rotating frame (13) is provided with a guide plate (16) symmetrically distributed along the rotating frame (13), and the end surface of the guide plate (16) is in contact with the slide frame (10); It also includes a torsion spring (15), the two ends of which are respectively fixedly connected to the rotating frame (13) and the fixed plate (2), so that when the sliding frame (10) slides forward or backward, the guide plate (16) squeezes the rotating frame (13) to rotate slightly clockwise or counterclockwise. It also includes first clamping rods (17) symmetrically distributed along the rotating frame (13), the first clamping rods (17) are slidably connected to the rotating frame (13), the first clamping rods (17) are in contact with the fixed plate (2), the fixed plate (2) is provided with rectangular grooves (171) symmetrically distributed along the fixed plate (2), the rectangular grooves (171) are used to limit the position of adjacent first clamping rods (17), and a first spring (18) is fixedly connected between the first clamping rod (17) and the rotating frame (13); The guide plate (16) is slidably connected to the rotating frame (13), and the guide plate (16) is provided with an oblique groove (172). When the first clamping rod (17) slides toward a side close to the rectangular groove (171), the first clamping rod (17) presses the guide plate (16) through the oblique groove (172) to slide outward.

2. A strength testing device for ship parts according to claim 1, characterized in that: The first mounting frame (8) and the slide plate (4) are fixedly connected via bolts, and the second mounting frame (11) and the slide plate (10) are also fixedly connected via bolts.

3. A strength testing device for ship parts according to claim 2, characterized in that: It also includes a second clamping rod (19), the second clamping rod (19) is slidably connected to the tensile machine (1), the second clamping rod (19) is pressed and matched with the pressing frame (14) on the side close to the fixed plate (2), the rotating frame (13) is fixedly connected to a fixing rod (20), the fixing rod (20) is slidably connected to the pressing frame (14), the rotating frame (13) is slidably connected to the pressing frame (14), and a tension spring (21) is fixedly connected between the pressing frame (14) and the fixing rod (20).

4. A strength testing device for ship parts according to claim 3, characterized in that: It also includes a card frame (23) symmetrically distributed along the rotating plate (12), the card frame (23) being slidably connected to the rotating plate (12), the second mounting frame (11) being provided with a card slot (231) symmetrically distributed along the second mounting frame (11), the card slot (231) being used to limit the position of adjacent card frames (23), and a second spring (24) being fixedly connected between the card frame (23) and the rotating plate (12).

5. A strength testing device for ship parts according to claim 4, characterized in that: It also includes wedge blocks (22) symmetrically distributed along the pressing frame (14), the wedge blocks (22) being fixedly connected to the pressing frame (14), and the wedge blocks (22) being pressed and matched with the adjacent clamping frame (23).

6. A strength testing device for ship parts according to claim 5, characterized in that: It also includes a support frame (25), the support frame (25) being slidably connected to the middle of the tensile machine (1), and the support frame (25) being used to support the anchor chain (101).

7. A strength testing device for ship parts according to claim 6, characterized in that: The support frame (25) is pressed and matched with the first clamping rod (17).

Images