A mooring chain fatigue test equipment

Abstract

The present invention discloses a mooring chain fatigue test equipment, which relates to the technical field of mooring chain performance detection, and includes a base, a support frame fixedly connected to the top of the base, a top plate fixedly connected to the top of the support frame, a hydraulic cylinder installed on the top of the top plate, and a connecting mechanism, a docking mechanism and a reinforcement mechanism. The present invention sets a connecting mechanism and a docking mechanism, a square block is displaced through one end of the chain and inserted into the square slot, and the rotating block is rotated to drive the fixed block to be displaced and inserted into the fixed slot, so as to complete the connection between the docking block and the chain; the card block is connected into the slot, and after completion, the movable frame is pushed to be displaced in the movable slot, the insert block is displaced and inserted into the slot, the displacement block is displaced and contacts the outer wall of the installation block, and the installation block and the docking block are fixedly connected, so as to facilitate the rapid installation of the chain on the test equipment, and at the same time, when one chain is tested, another chain can be connected to the docking block, thereby improving the installation efficiency of the chain.

Description

Technical Field

[0001] The invention relates to the technical field of mooring chain performance detection, in particular to a mooring chain fatigue test device. Background Art

[0002] Mooring chain refers to the chain that connects and fixes the sea surface facilities and the seabed. Mooring chain refers to the steel chain used for anchorage mooring, which is widely used in offshore engineering, ships and other fields. When producing mooring chains, fatigue tests need to be carried out on them. The mooring chains are repeatedly pulled by hydraulic cylinders to carry out fatigue tests. During the repeated pulling process, the clamps are prone to loosening and unhooking, which brings safety hazards to the operators. In addition, after testing a mooring chain, it is necessary to disassemble the two ends of the mooring chain by disassembling the bolts and clamps of the fixings, and then fix and test the two ends of the next mooring chain. The operation is relatively complicated, which reduces the detection efficiency of the mooring chain. In order to facilitate the installation of the mooring chain on the experimental equipment, a mooring chain fatigue test equipment is provided. Summary of the invention

[0003] The object of the present invention is to provide a mooring chain fatigue test device in order to facilitate the installation of a mooring chain on a test device.

[0004] To achieve the above object, the present invention provides the following technical solutions: a mooring chain fatigue test device, comprising a base, a support frame is fixedly connected to the top of the base, a top plate is fixedly connected to the top of the support frame, a hydraulic cylinder is installed on the top of the top plate, a mounting block is fixedly connected to the top of the base and the output end of the hydraulic cylinder, a docking block is installed on the outer wall of the mounting block, a chain is arranged between two docking blocks, the chain is connected to the docking block through a connecting mechanism, and the mounting block and the docking block are connected through a docking mechanism;

[0005] The connecting mechanism includes a connecting groove, which is opened at the bottom end of the docking block, and a square block is slidably connected to the interior of the docking block on one side of the connecting groove, and a round rod is fixedly connected to the outer wall of the square block, and one end of the round rod is fixedly connected to a disc, and a square groove is opened on the other side of the connecting groove, and a fixing groove is opened at the top of the square groove, and the interior of the square block is slidably connected to a fixing block extending to the top of the square block, and the interior of the square block is rotatably connected to a threaded rod extending to the interior of the fixing block, one end of the threaded rod is fixedly connected to a first bevel gear, and the interior of the square block is rotatably connected to a second bevel gear on the outer wall of the first bevel gear, and one end of the second bevel gear is fixedly connected to a rotating block, and when the mounting block and the docking block are connected, the position of the square block is reinforced by a reinforcement mechanism.

[0006] As a further scheme of the present invention: the docking mechanism includes a card block, which is fixedly connected to the top of the docking block, a slot is provided on one side outer wall of the mounting block, and a movable slot is provided on the outer wall of the mounting block above the slot, a movable frame is slidably connected to the inner wall of the movable slot, one end of the movable frame is fixedly connected to an insertion block, a displacement block extending to the top of the movable frame is slidably connected to the inside of the movable frame, a first spring is connected between the bottom end of the displacement block and the movable frame, a pull rod is slidably connected to the inside of the movable frame at one side of the displacement block, the pull rod extends out of the movable frame, a second spring is connected between the pull rod and the movable frame, and the outer wall of the pull rod is fixedly connected to a pushing frame that runs through the displacement block.

[0007] As a further solution of the present invention: the reinforcement mechanism includes a positioning groove, the positioning groove is opened on one side of the fixed block, the interior of the docking block is slidably connected to the limiting frame, the blocking block and the docking block are respectively extended from both ends of the limiting frame, the outer wall of the limiting frame is fixedly connected to the first elastic sheet, the outer wall of one side of the limiting frame is fixedly connected to the lower pressure frame, the interior of the docking block is slidably connected to the positioning frame at the bottom end of the lower pressure frame, the bottom end of the positioning frame extends to the inner wall of the fixed groove, and the outer wall of the positioning frame is fixedly connected to the second elastic sheet.

[0008] As a further solution of the present invention: the outer wall of the square block fits with the inner wall of the square groove, and the inner wall of the fixing groove fits with the outer wall of the fixing block.

[0009] As a further solution of the present invention: a threaded hole is formed at the bottom end of the fixing block, the threaded hole matches the threaded rod, and the first bevel gear is meshed with the second bevel gear.

[0010] As a further solution of the present invention: the shape of the card block is T-shaped, and the outer wall of the card block is in contact with the inner wall of the slot.

[0011] As a further solution of the present invention: the inner wall of the movable groove fits with the outer wall of the movable frame, and the outer wall of the insert block fits with the inner wall of the slot.

[0012] As a further solution of the present invention: a first inclined surface is provided on an outer wall of one side of the displacement block, a through groove is provided on the outer wall of the displacement block, and an inner wall of the through groove is in contact with the outer wall of the pushing frame.

[0013] As a further solution of the present invention: one end of the limiting frame extending to the outside of the clamping block is provided with a semicircular surface, and the inner wall of the positioning groove is in contact with the bottom outer wall of the positioning frame.

[0014] As a further solution of the present invention: a second inclined surface is arranged at the top end of the positioning frame, and the bottom end of the pressing frame contacts the second inclined surface.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By setting a connecting mechanism and a docking mechanism, the square block is displaced through one end of the chain and inserted into the square groove. The rotating block is rotated to drive the fixed block to be displaced and inserted into the fixed groove to complete the connection between the docking block and the chain; the card block is connected into the slot. After completion, the movable frame is pushed to displace in the movable slot, and the insert block is displaced and inserted into the slot. The displacement block is displaced and contacts the outer wall of the mounting block, and the mounting block and the docking block are fixedly connected, which is convenient for quickly installing the chain on the test equipment. At the same time, when one chain is tested, the other chain can be connected to the docking block, thereby improving the installation efficiency of the chain.

[0017] 2. By setting up a reinforcement mechanism, when the card block is connected and enters the slot, the limit frame contacts the inner wall of the slot, pushing the limit frame to move, and the limit frame moves downward to contact the outer wall of the disc, so that the disc is tightly attached to the outer wall of the docking block; at the same time, the displacement of the slot drives the lower pressure frame to move, and the displacement of the lower pressure frame drives the positioning frame to move, and the positioning frame is inserted into the positioning slot to prevent the fixed block from moving out of the fixed slot; this device can prevent the chain and the docking block from loosening during the test, thereby affecting the test effect and ensuring the safety of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the mounting block and the docking block of the present invention;

[0020] Figure 3 It is a schematic diagram of the internal structure of the docking block of the present invention;

[0021] Figure 4 It is a schematic diagram of the internal structure of the square block of the present invention;

[0022] Figure 5 It is a schematic diagram of the split structure of the mounting block and the docking block of the present invention;

[0023] Figure 6 It is a schematic diagram of the internal structure of the mounting block of the present invention;

[0024] Figure 7 It is a schematic structural diagram of the displacement block and the pushing frame of the present invention.

[0025] In the figure: 1, base; 2, support frame; 3, top plate; 4, hydraulic cylinder; 5, mounting block; 6, docking block; 7, connecting mechanism; 701, connecting groove; 702, square groove; 703, fixing groove; 704, square block; 705, round rod; 706, round plate; 707, fixing block; 708, threaded rod; 709, first bevel gear; 710, second bevel gear; 711, rotating block; 8, docking mechanism; 8 01. Block; 802. Slot; 803. Movable slot; 804. Movable frame; 805. Insert block; 806. Displacement block; 807. First spring; 808. Pull rod; 809. Second spring; 810. Push frame; 9. Reinforcement mechanism; 901. Positioning slot; 902. Limiting frame; 903. First elastic sheet; 904. Pressing frame; 905. Positioning frame; 906. Second elastic sheet; 10. Chain. DETAILED DESCRIPTION

[0026] 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.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0028] See also Figures 1 to 7In an embodiment of the present invention, a mooring chain fatigue test device includes a base 1, a support frame 2 is fixedly connected to the top of the base 1, a top plate 3 is fixedly connected to the top of the support frame 2, a hydraulic cylinder 4 is installed on the top of the top plate 3, a mounting block 5 is fixedly connected to the top of the base 1 and the output end of the hydraulic cylinder 4, a docking block 6 is installed on the outer wall of the mounting block 5, a chain 10 is arranged between the two docking blocks 6, the chain 10 is connected to the docking block 6 through a connecting mechanism 7, the mounting block 5 and the docking block 6 are connected through a docking mechanism 8, the connecting mechanism 7 includes a connecting groove 701, the connecting groove 701 is opened at the bottom end of the docking block 6, the interior of the docking block 6 is located on one side of the connecting groove 701 and is slidably connected with a square block 704, and the outer wall of the square block 704 is fixedly connected with A round rod 705, one end of which is fixedly connected to a round disc 706, a square groove 702 is provided on the other side of the connecting groove 701, a fixing groove 703 is provided on the top of the square groove 702, the interior of the square block 704 is slidably connected to a fixing block 707 extending to the top of the square block 704, the interior of the square block 704 is rotatably connected to a threaded rod 708 extending to the interior of the fixing block 707, one end of the threaded rod 708 is fixedly connected to a first bevel gear 709, the interior of the square block 704 is located on the outer wall of the first bevel gear 709 and is rotatably connected to a second bevel gear 710, one end of the second bevel gear 710 is fixedly connected to a rotating block 711, and when the mounting block 5 and the docking block 6 are connected, the position of the square block 704 is reinforced by the reinforcing mechanism 9.

[0029] In this embodiment: when the chain 10 is connected to the docking block 6, one end of the chain 10 is extended into the connecting groove 701 to push the disc 706 to move. The displacement of the disc 706 drives the round rod 705 to move. The displacement of the round rod 705 drives the square block 704 to move. The square block 704 moves through one end of the chain 10 and is inserted into the square groove 702 until the disc 706 fits the outer wall of the docking block 6. Then, the rotating block 711 is rotated. The rotating block 711 rotates to drive the second bevel gear 710 to rotate. The second bevel gear 710 rotates to drive the first bevel gear 709 to rotate. The first bevel gear 709 rotates to drive the threaded rod 708 to rotate. The threaded rod 708 rotates to drive the fixed block 707 to move. The fixed block 707 is displaced and inserted into the fixed groove 703, thereby fixing the square block 704 in the square groove 702, thereby completing the connection between the docking block 6 and the chain 10.

[0030] Please refer to Figures 5 to 7The docking mechanism 8 includes a card block 801, which is fixedly connected to the top of the docking block 6. A slot 802 is provided on the outer wall of one side of the mounting block 5. A movable slot 803 is provided on the outer wall of the mounting block 5 above the slot 802. A movable frame 804 is slidably connected to the inner wall of the movable slot 803. An insert block 805 is fixedly connected to one end of the movable frame 804. A displacement block 806 extending to the top of the movable frame 804 is slidably connected inside the movable frame 804. A first spring 807 is connected between the bottom end of the displacement block 806 and the movable frame 804. A pull rod 808 is slidably connected inside the movable frame 804 at one side of the displacement block 806. The pull rod 808 extends out of the movable frame 804. A second spring 809 is connected between the pull rod 808 and the movable frame 804. A pushing frame 810 running through the displacement block 806 is fixedly connected to the outer wall of the pull rod 808.

[0031] In this embodiment: when connecting the mounting block 5 and the docking block 6, the card block 801 is connected into the slot 802. After completion, the movable frame 804 is pushed to displace in the movable slot 803. The displacement of the movable frame 804 drives the insertion block 805 to displace. The insertion block 805 is displaced and inserted into the slot 802 to contact the card block 801. At this time, the displacement block 806 moves out of the movable slot 803. The displacement block 806 is ejected outward by the elastic force of the first spring 807 and contacts the outer wall of the mounting block 5. At the same time, the pull rod 808 is displaced by the elastic force of the second spring 809 and contacts the bottom end of the displacement block 806 to prevent the displacement block 806 from moving downward and loosening, thereby fixing the position of the movable frame 804. After the position of the movable frame 804 is fixed, the card block 801 can be locked, thereby fixing the mounting block 5 and the docking block 6.

[0032] When the installation block 5 and the docking block 6 are separated, the pull rod 808 is displaced, and the pull rod 808 is displaced and separated from the displacement block 806. Then, the pull rod 808 is displaced to drive the push frame 810 to displace, and the push frame 810 is displaced to contact the displacement block 806, and the displacement block 806 is pushed to displace, and the displacement block 806 moves and separates from the installation block 5. The movable frame 804 is pushed to move and drive the insertion block 805 to move out of the slot 802, and then the clamping block 801 can be moved out of the slot 802, so as to separate the installation block 5 and the docking block 6. This design facilitates the rapid installation of the chain 10 on the test equipment, and at the same time, when one chain 10 is tested, another chain 10 can be assembled and connected with the docking block 6, thereby improving the installation efficiency of the chain 10.

[0033] Please refer to Figure 3 to Figure 4The reinforcement mechanism 9 includes a positioning groove 901, which is opened on one side of the fixed block 707. The interior of the docking block 6 is slidably connected to a limiting frame 902, and the two ends of the limiting frame 902 extend out of the card block 801 and the docking block 6 respectively. The outer wall of the limiting frame 902 is fixedly connected to a first elastic sheet 903, and the outer wall of one side of the limiting frame 902 is fixedly connected to a lower pressure frame 904. The interior of the docking block 6 is located at the bottom end of the lower pressure frame 904 and is slidably connected to a positioning frame 905, and the bottom end of the positioning frame 905 extends to the inner wall of the fixed groove 703, and the outer wall of the positioning frame 905 is fixedly connected to a second elastic sheet 906.

[0034] In this embodiment: when the card block 801 is connected and enters the slot 802, the limit frame 902 contacts the inner wall of the slot 802, pushing the limit frame 902 to move, and when the limit frame 902 moves downward, its rod body outside the docking block 6 contacts the outer wall of the disc 706, and the disc 706 is tightly fixed on the outer wall of the docking block 6; at the same time, the displacement of the slot 802 drives the lower pressure frame 904 to move, and the displacement of the lower pressure frame 904 pushes the positioning frame 905 to move, and the positioning frame 905 is displaced and inserted into the positioning groove 901 to prevent the fixed block 707 from moving out of the fixed groove 703 under the operating vibration conditions. When conducting the test, it can prevent the chain 10 and the docking block 6 from loosening, thereby affecting the test effect, thereby ensuring the safety of the experiment.

[0035] Please refer to Figures 2 to 4 The outer wall of the square block 704 fits with the inner wall of the square groove 702 , and the inner wall of the fixing groove 703 fits with the outer wall of the fixing block 707 .

[0036] In this embodiment: one end of the chain 10 is extended into the connecting groove 701 to push the disc 706 to move, the displacement of the disc 706 drives the round rod 705 to move, the displacement of the round rod 705 drives the square block 704 to move, and the square block 704 moves through one end of the chain 10 and is inserted into the square groove 702.

[0037] Please refer to Figures 2 to 4 A threaded hole is provided at the bottom end of the fixing block 707 , the threaded hole matches the threaded rod 708 , and the first bevel gear 709 is meshed with the second bevel gear 710 .

[0038] In this embodiment: the rotation of the rotating block 711 drives the second bevel gear 710 to rotate, the rotation of the second bevel gear 710 drives the first bevel gear 709 to rotate, the rotation of the first bevel gear 709 drives the threaded rod 708 to rotate, the rotation of the threaded rod 708 drives the fixed block 707 to move, the fixed block 707 is moved and inserted into the fixed groove 703, thereby fixing the square block 704 in the square groove 702.

[0039] Please refer to Figures 5 to 7The shape of the card block 801 is T-shaped, the outer wall of the card block 801 is in contact with the inner wall of the slot 802, the inner wall of the movable groove 803 is in contact with the outer wall of the movable frame 804, and the outer wall of the plug block 805 is in contact with the inner wall of the slot 802.

[0040] In this embodiment: the card block 801 is connected into the slot 802. After completion, the movable frame 804 is pushed to displace in the movable slot 803. The displacement of the movable frame 804 drives the insertion block 805 to displace. The insertion block 805 is displaced and inserted into the slot 802 to contact the card block 801. At this time, the displacement block 806 moves out of the movable slot 803. The displacement block 806 is displaced by the elastic force of the first spring 807 and contacts the outer wall of the mounting block 5. At the same time, the pull rod 808 is displaced by the elastic force of the second spring 809 and contacts the bottom end of the displacement block 806 to prevent the displacement block 806 from moving downward and loosening, thereby fixing the position of the movable frame 804. The fixed position of the movable frame 804 fixes the card block 801.

[0041] Please refer to Figures 5 to 7 A first inclined surface is provided on one side outer wall of the displacement block 806 , and a through groove is provided on the outer wall of the displacement block 806 , and the inner wall of the through groove is in contact with the outer wall of the pushing frame 810 .

[0042] In this embodiment: the pull rod 808 is pushed to be displaced, the pull rod 808 is displaced and separated from the displacement block 806, then the pull rod 808 is displaced to drive the push frame 810 to be displaced, the push frame 810 is displaced and contacts the displacement block 806, the displacement block 806 is pushed to be displaced, the displacement block 806 is displaced and separated from the mounting block 5, the movable frame 804 is pushed to be displaced to drive the insertion block 805 to be displaced out of the slot 802, then the card block 801 is moved out of the slot 802, and the mounting block 5 and the docking block 6 are separated.

[0043] Please refer to Figure 3 to Figure 4 The end of the limiting frame 902 extending to the outside of the block 801 is provided with a semicircular surface, the inner wall of the positioning groove 901 is in contact with the bottom outer wall of the positioning frame 905, the top of the positioning frame 905 is provided with a second inclined surface, and the bottom end of the pressing frame 904 is in contact with the second inclined surface.

[0044] In this embodiment: when the card block 801 is connected and enters the slot 802, the limit frame 902 contacts the inner wall of the slot 802, pushing the limit frame 902 to move, and the limit frame 902 moves downward to contact the outer wall of the disc 706, so that the disc 706 is tightly attached to the outer wall of the docking block 6; at the same time, the displacement of the slot 802 drives the lower pressure frame 904 to move, and the displacement of the lower pressure frame 904 pushes the positioning frame 905 to move, and the positioning frame 905 is displaced and inserted into the positioning groove 901 to prevent the fixed block 707 from moving out of the fixed groove 703.

[0045] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mooring chain fatigue test device, comprising a base (1), a support frame (2) being fixedly connected to the top of the base (1), a top plate (3) being fixedly connected to the top of the support frame (2), a hydraulic cylinder (4) being installed on the top of the top plate (3), characterized in that: The top end of the base (1) and the output end of the hydraulic cylinder (4) are both fixedly connected with a mounting block (5); a docking block (6) is installed on the outer wall of the mounting block (5); a chain (10) is arranged between the two docking blocks (6); the chain (10) is connected to the docking block (6) via a connecting mechanism (7); and the mounting block (5) and the docking block (6) are connected via a docking mechanism (8); The docking mechanism (8) comprises a clamping block (801), the clamping block (801) being fixedly connected to the top of the docking block (6), a slot (802) being provided on one side outer wall of the mounting block (5), a movable slot (803) being provided on the outer wall of the mounting block (5) located above the slot (802), a movable frame (804) being slidably connected to the inner wall of the movable slot (803), an inserting block (805) being fixedly connected to one end of the movable frame (804), and a plug extending to the movable frame (804) being slidably connected to the inner wall of the movable frame (804). ) above the movable frame (804), a first spring (807) is connected between the bottom end of the displacement block (806) and the movable frame (804), a pull rod (808) is slidably connected to one side of the displacement block (806) inside the movable frame (804), the pull rod (808) extends out of the movable frame (804), a second spring (809) is connected between the pull rod (808) and the movable frame (804), and the outer wall of the pull rod (808) is fixedly connected to a push frame (810) that passes through the displacement block (806).

2. A mooring chain fatigue test equipment according to claim 1, characterized in that: The connecting mechanism (7) comprises a connecting groove (701), the connecting groove (701) being provided at the bottom end of the docking block (6), a square block (704) being slidably connected to one side of the connecting groove (701) inside the docking block (6), a round rod (705) being fixedly connected to the outer wall of the square block (704), a round disc (706) being fixedly connected to one end of the round rod (705), a square groove (702) being provided on the other side of the connecting groove (701), a fixing groove (703) being provided on the top end of the square groove (702), and a round rod (706) extending to the square block being slidably connected to the inside of the square block (704). (704) is a fixed block (707) at the top end, the interior of the square block (704) is rotatably connected to a threaded rod (708) extending into the interior of the fixed block (707), one end of the threaded rod (708) is fixedly connected to a first bevel gear (709), the interior of the square block (704) is rotatably connected to a second bevel gear (710) located on the outer wall of the first bevel gear (709), one end of the second bevel gear (710) is fixedly connected to a rotating block (711), and when the mounting block (5) and the docking block (6) are connected, the position of the square block (704) is reinforced by a reinforcement mechanism (9).

3. A mooring chain fatigue test equipment according to claim 2, characterized in that: The reinforcing mechanism (9) comprises a positioning groove (901), wherein the positioning groove (901) is provided on one side of the fixing block (707); the interior of the docking block (6) is slidably connected to a limiting frame (902); the clamping block (801) and the docking block (6) are respectively extended from two ends of the limiting frame (902); the outer wall of the limiting frame (902) is fixedly connected to a first elastic sheet (903); the outer wall of one side of the limiting frame (902) is fixedly connected to a lower pressing frame (904); the interior of the docking block (6) is located at the bottom end of the lower pressing frame (904) and is slidably connected to a positioning frame (905); the bottom end of the positioning frame (905) extends to the inner wall of the fixing groove (703); and the outer wall of the positioning frame (905) is fixedly connected to a second elastic sheet (906).

4. A mooring chain fatigue test equipment according to claim 2, characterized in that: The outer wall of the square block (704) fits with the inner wall of the square groove (702), and the inner wall of the fixing groove (703) fits with the outer wall of the fixing block (707).

5. A mooring chain fatigue test equipment according to claim 2, characterized in that: A threaded hole is provided at the bottom end of the fixing block (707), the threaded hole matches the threaded rod (708), and the first bevel gear (709) is meshed with the second bevel gear (710).

6. A mooring chain fatigue test equipment according to claim 2, characterized in that: The shape of the card block (801) is T-shaped, and the outer wall of the card block (801) fits with the inner wall of the slot (802).

7. A mooring chain fatigue test equipment according to claim 2, characterized in that: The inner wall of the movable groove (803) fits with the outer wall of the movable frame (804), and the outer wall of the insert block (805) fits with the inner wall of the slot (802).

8. A mooring chain fatigue test equipment according to claim 2, characterized in that: A first inclined surface is provided on one side outer wall of the displacement block (806), and a through groove is provided on the outer wall of the displacement block (806), wherein the inner wall of the through groove is in contact with the outer wall of the pushing frame (810).

9. A mooring chain fatigue test equipment according to claim 3, characterized in that: One end of the limiting frame (902) extending to the outside of the clamping block (801) is provided with a semicircular surface, and the inner wall of the positioning groove (901) is in contact with the bottom outer wall of the positioning frame (905).

10. A mooring chain fatigue test equipment according to claim 3, characterized in that: The top end of the positioning frame (905) is provided with a second inclined surface, and the bottom end of the pressing frame (904) is in contact with the second inclined surface.

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