C-shaped connecting ring and manufacturing device

Abstract

The present invention relates to the technical field of wire rope connectors, and discloses a C-shaped connecting ring and a manufacturing device, including a connecting ring body, an intermediate stopper is arranged in the middle of the connecting ring body, an opening is arranged on one side of the connecting ring body, a connecting cover is arranged on the connecting ring body at the opening, one end of the connecting cover is rotatably connected to the connecting ring body, and the other end of the connecting cover is detachably connected to the connecting ring body, a first slide groove is arranged on the inner side of the connecting cover, a second slide groove is arranged on the inner side of the connecting ring body corresponding to the opening, and sliders are arranged at both ends of the intermediate stopper, and the two sliders are arranged in the first slide groove and the second slide groove respectively. The intermediate stopper of the present invention is movable up and down, and can be adapted to two rope loops of different specifications, or two wire ropes of different specifications, and has better adaptability. The connecting cover of the present invention is directly and fixedly connected to the connecting ring body, and can directly participate in sharing the pulling force, thereby improving the tensile strength of the connecting ring body.

Description

Technical Field

[0001] The invention relates to the technical field of steel wire rope connectors, in particular to a C-shaped connecting ring and a manufacturing device. Background Art

[0002] Steel wire rope connection is widely used in many production, transportation, warehousing, docks and other occasions. In many operations in these occasions, some quick steel wire rope connection processes are required, and the steel wire rope needs to be quickly fixedly connected to the rope loop. Generally, the steel wire rope is made of multiple strands of steel wires twisted together.

[0003] Chinese patent CN202560932U discloses a C-shaped ring quick shackle, specifically, a quick connection between a wire rope and a grab bucket, belonging to the technical field of crane equipment. It mainly includes a shackle body, a protective cover, a connector, a cylindrical pin, a cross pin and a spring. An opening is provided at one end of the shackle body, and an opening groove is provided in the protective cover for easy insertion into the opening, and the protective cover is clamped at the opening. The shackle body is provided with a through hole, a clamping groove and a connecting groove in sequence, and the protective cover is provided with a dovetail groove, a clamping groove and a through hole in sequence. The connector is installed between the shackle body and the protective cover, and the two ends of the connector are respectively installed in the connecting groove and the dovetail groove. The utility model has a simple, compact and reasonable structure; it is easy to operate, has a reliable connection, is quickly disassembled, improves work efficiency and saves time. However, the above technical solution has a fixed position of the connector, and cannot be adapted to two rope loops of different specifications, or two wire ropes of different specifications, and has better adaptability. At the same time, the protective cover is directly connected to the shackle body only by clamping and non-fixed connection, and cannot effectively provide tensile strength for the connecting ring body. Summary of the invention

[0004] To solve the above problems, the present invention adopts the following technical solutions.

[0005] A C-shaped connecting ring comprises a connecting ring body, an intermediate stopper is arranged in the middle of the connecting ring body, an opening is arranged on one side of the connecting ring body, a connecting cover is arranged on the connecting ring body at the opening, one end of the connecting cover is rotatably connected to the connecting ring body, and the other end of the connecting cover is detachably connected to the connecting ring body, a first slide groove is arranged on the inner side of the connecting cover, a second slide groove is arranged on the inner side of the connecting ring body corresponding to the opening, sliders are arranged at both ends of the intermediate stopper, and the two sliders are arranged in the first slide groove and the second slide groove respectively.

[0006] Furthermore, a first connecting block is provided at one end of the connecting ring body at the opening, a first through hole is penetrated in the middle of the connecting block, a fork is provided at one end of the connecting cover, a second through hole is penetrated on the fork, the fork and the first connecting block are rotatably connected by a pin shaft passing through the second through hole and the first through hole, a step surface is provided on the other end of the connecting ring body at the opening, a first threaded hole is provided on the step surface, a second connecting block is provided at the other end of the connecting cover, a third through hole is provided on the second connecting block corresponding to the first threaded hole, and the second connecting block is fastened to the connecting ring body by bolts.

[0007] Furthermore, second threaded holes are provided at both upper and lower ends of the slider, a pressure rod is threadedly connected to the second threaded hole, first mounting holes are provided at both upper and lower ends of the second slide groove, a first spring and a second spring are respectively provided in the upper and lower first mounting holes, the other ends of the upper and lower pressure rods on one side of the slider slide in the upper and lower first mounting holes, and the upper and lower pressure rods contact the first spring and the second spring respectively, second mounting holes are provided at both upper and lower ends of the first slide groove, a third spring and a fourth spring are respectively provided in the upper and lower second mounting holes, the other ends of the upper and lower pressure rods on the other side of the slider slide in the second mounting holes, and contact the third spring and the fourth spring respectively.

[0008] Furthermore, the connecting cover includes an upper half and a lower half, the upper half is an L-shaped structure, including a first vertical section and a first horizontal section located at the lower end of the first vertical section, the fork is arranged at the top end of the first vertical section, and the first horizontal section is provided with a fourth through hole, the lower half is a C-shaped structure, including a second vertical section, the top end of the second vertical section is provided with a second horizontal section, the bottom end of the second vertical section is provided with a third horizontal section, the second connecting block is arranged at the lower part of the outward end of the third horizontal section, the second horizontal section is penetrated with a fifth through hole, and the first horizontal section and the second horizontal section are fastened with nuts after bolts pass through the third through hole and the fourth through hole.

[0009] Furthermore, the third through hole is a countersunk hole arranged from bottom to top.

[0010] Furthermore, the upper and lower ends of the middle stopper are arc-shaped.

[0011] Furthermore, an installation groove is provided on the inner side of the connecting ring body corresponding to the opening, and a mounting block is detachably provided in the installation groove, connecting ears are provided at the upper and lower ends of the mounting block, a sixth through hole is penetrated through the connecting ears, and a third threaded hole is provided at the position of the two sixth through holes in the installation groove, the mounting block is connected to the connecting ring body by bolts, and the second sliding groove is provided on the inward side of the mounting block.

[0012] Furthermore, a fourth threaded hole is provided on the side wall of the same side of the connecting ring body at the upper and lower ends of the opening, a mounting rod is provided in the fourth threaded hole, and a warning device is provided between the two mounting rods.

[0013] Furthermore, the warning device includes an upper hanging rod and a lower hanging rod, the upper end of the upper hanging rod is hooked with the mounting rod arranged above, the lower end of the lower hanging rod is hooked with the mounting rod arranged below, a gap is left between the lower end of the upper hanging rod and the upper end of the lower hanging rod, and the lower end of the upper hanging rod is connected to the lower hanging rod by being wrapped by an insulating layer or the upper end of the lower hanging rod is connected to the upper hanging rod by being wrapped by an insulating layer, a bag body is also sealed on the outside of the upper hanging rod and the lower hanging rod, the bag body is in a relaxed state, a conductive liquid is arranged in the bag body, a placement bag is arranged on the outside of the bag body, a warning light and a battery are arranged in the placement bag, and the upper hanging rod is connected in series with the warning light, the battery and the lower hanging rod.

[0014] A C-shaped connecting ring manufacturing device comprises a base, wherein first guide rails are respectively arranged horizontally on the front and rear sides of the base, the first guide rails, and a plurality of first clamping mechanisms are slidably arranged on the first guide rails, and a plurality of second guide rails are respectively arranged vertically on the left and right sides of the base, and a plurality of second clamping mechanisms are slidably arranged on the second guide rails, the first clamping mechanism comprises a first telescopic rod, a first moving block is arranged at the bottom of the first telescopic rod, the first moving block slides in the first guide rail, a fourth telescopic rod is arranged at the top of the extended end of the first telescopic rod, and a clamping claw is arranged at the extended end of the fourth telescopic rod, the second clamping mechanism comprises a second telescopic rod, a second moving block is arranged at the bottom of the second telescopic rod, the second moving block slides in the second guide rail, a third telescopic rod is horizontally arranged at the top of the extended end of the second telescopic rod, and a clamping piece is arranged at the extended end of the third telescopic rod.

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

[0016] 1. The intermediate stopper of the present invention is movable up and down, and can be adapted to two rope loops of different specifications, or two steel wire ropes of different specifications, and has better adaptability.

[0017] 2. The upper end of the connection cover of the present invention is detachably connected to the connection ring body. In actual use, when the rope loop or wire rope is replaced, the connection cover and the connection ring body can be kept together to avoid loss.

[0018] 3. The connecting cover of the present invention is directly and fixedly connected to the connecting ring body, and can directly participate in sharing the pulling force, thereby improving the tensile strength of the connecting ring body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 is a cross-sectional view of the first embodiment of the present invention;

[0021] Figure 2 is a cross-sectional view of a second embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the connection cover of Embodiment 3 of the present invention;

[0023] Figure 4 is a cross-sectional view of a fourth embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the overall structure of Embodiment 5 of the present invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the bag body of Embodiment 5 of the present invention;

[0026] Figure 7 This is a structural diagram of Embodiment 6 of the present invention;

[0027] Figure 8 Schematic diagram of the reference structure of the clamping claw according to the sixth embodiment of the present invention. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Embodiment 1

[0032] like Figure 1 As shown, in this embodiment, a C-shaped connecting ring includes a connecting ring body 1, and an intermediate stopper 2 is arranged in the middle of the connecting ring body. In this embodiment, in order to better fit the wire rope or rope loop, hook, etc., the upper and lower ends of the intermediate stopper 2 are arc-shaped. An opening 3 is arranged on one side of the connecting ring body 1, and a connecting cover 4 is arranged on the connecting ring body 1 at the opening 3. A first connecting block 5 is arranged at one end of the connecting ring body 1 at the opening 3, and a first through hole 6 is penetrated in the middle of the connecting block. A fork 7 is arranged at one end of the connecting cover 4, and a second through hole 8 is penetrated on the fork 7. The fork 7 is rotatably connected with the first connecting block 5 through a pin passing through the second through hole 8 and the first through hole 6. A step surface 9 is arranged on the other end of the connecting ring body 1 at the opening 3, and a first threaded hole 10 is arranged on the step surface 9. A second connecting block 11 is arranged on the other end of the connecting cover 4, and a third through hole 12 is arranged on the second connecting block 11 corresponding to the first threaded hole 10. The second connecting block 11 is fastened to the connecting ring body 1 by bolts. A first slide groove 13 is provided on the inner side of the connecting cover 4, a second slide groove 14 is provided on the inner side of the connecting ring body 1 corresponding to the opening 3, and sliders 15 are provided at both ends of the middle stopper 2, and the two sliders 15 are respectively arranged in the first slide groove 13 and the second slide groove 14.

[0033] The working principle of the above technical solution is:

[0034] There are two installation methods when using the technical solution provided in this embodiment.

[0035] The first method is to directly put the rope loop or wire rope on the upper and lower ends of the connecting ring body 1, and then insert the middle block 2, and then connect the connecting cover 4 with the middle block 2, and use pins and bolts to install and fix the upper and lower ends of the connecting cover 4.

[0036] The second method is to first connect the upper end of the connecting cover 4 to the connecting ring body 1 at the upper end of the opening 3 through a pin, and then open the connecting cover 4, and then directly put the rope loop or wire rope on the upper and lower ends of the connecting ring body 1, and then insert the middle stopper 2, and then close the connecting cover 4 and connect it to the middle stopper 2, and finally install and fix the lower two ends of the connecting cover 4 with bolts.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 4. The intermediate stopper 2 of the present invention is movable up and down, and can be adapted to two rope loops of different specifications, or two steel wire ropes of different specifications, and has better adaptability.

[0039] 5. The upper end of the connection cover 4 of the present invention is detachably connected to the connection ring body 1. In actual use, when the rope loop or wire rope is replaced, the connection cover 4 and the connection ring body 1 can be kept together to avoid loss.

[0040] 6. The connection cover 4 of the present invention is directly and fixedly connected to the connection ring body 1 and can directly participate in sharing the pulling force, thereby improving the tensile strength of the connection ring body 1.

[0041] Embodiment 2

[0042] like Figure 2 As shown, on the basis of Example 1, in this embodiment, second threaded holes 16 are provided at the upper and lower ends of the slider 15, and a pressure rod 17 is connected to the inner thread of the second threaded hole 16, and first mounting holes 18 are provided at the upper and lower ends of the second slide groove 14, and a first spring 19 and a second spring 20 are provided in the upper and lower first mounting holes 18 respectively, and the other ends of the upper and lower pressure rods 17 on one side of the slider 15 slide in the upper and lower first mounting holes 18 respectively, and the upper and lower pressure rods 17 are in contact with the first spring 19 and the second spring 20 respectively, and second mounting holes 21 are provided at the upper and lower ends of the first slide groove 13, and a third spring 22 and a fourth spring 23 are provided in the upper and lower second mounting holes 21 respectively, and the other ends of the upper and lower pressure rods 17 on the other side of the slider 15 slide in the second mounting holes 21 respectively, and are in contact with the third spring 22 and the fourth spring 23 respectively.

[0043] The working principle and beneficial effects of the above technical solution are:

[0044] During use, when installing the intermediate block 2, first connect the intermediate block 2 with the connecting cover 4, then connect the rope loop or wire rope with the upper and lower ends of the connecting ring body 1, and then connect the intermediate block 2 with the connecting ring body 1, and finally connect the connecting cover 4 with the connecting ring body 1.

[0045] When the two ends of the connecting ring body 1 are unloaded and in a vertical state, the first spring 19, the second spring 20, the third spring 22 and the fourth spring 23 are all in a compressed state, and the middle stopper 2 is located in the middle position. The arrangement of the first spring 19, the second spring 20, the third spring 22 and the fourth spring 23 in this embodiment makes the position of the middle stopper 2 in a relatively stable state without being subjected to external forces, and will not come into contact with the rope loop or wire rope below, thereby reducing noise and wear.

[0046] Embodiment 3

[0047] like Figure 3 As shown, on the basis of the second embodiment, in this embodiment, the connecting cover 4 includes an upper half 4-1 and a lower half 4-2, the upper half 4-1 is an L-shaped structure, including a first vertical section 4-11 and a first horizontal section 4-12 located at the lower end of the first vertical section 4-11, the fork 7 is arranged at the top of the first vertical section 4-11, and the first horizontal section 4-12 is provided with a fourth through hole 4-13, the lower half 4-2 is a C-shaped structure, including a second vertical section 4-21, the second vertical section 4-2 The top of the second horizontal section 4-22 is provided with a second horizontal section 4-22, the bottom of the second vertical section 4-21 is provided with a third horizontal section 4-23, the second connecting block 11 is provided at the lower part of the outward end of the third horizontal section 4-23, the second horizontal section 4-22 is penetrated with a fifth through hole 4-24, the first horizontal section 4-12 and the second horizontal section 4-22 are fastened and connected with nuts after bolts pass through the third through hole 12 and the fourth through hole 4-13, and the third through hole 12 is a countersunk hole provided from bottom to top.

[0048] The working principle and beneficial effects of the above technical solution are:

[0049] When in use, the upper half 4-1 is first connected to the connecting ring body 1 through a latch, and the lower half 4-2 is connected to the connecting ring body 1 through a bolt, and finally the upper half 4-1 and the lower half 4-2 are tightened by the bolt and nut. The technical solution of this embodiment can directly connect the two ends of the opening 3 of the connecting ring body 1, thereby improving the tensile strength of the connecting ring body 1.

[0050] Embodiment 4

[0051] like Figure 4 As shown, on the basis of embodiment 2, in this embodiment, a mounting groove 24 is provided on the inner side of the connecting ring body 1 corresponding to the opening 3, and a mounting block 25 is detachably provided in the mounting groove 24, and connecting ears 26 are provided at the upper and lower ends of the mounting block 25, and a sixth through hole 27 is penetrated through the connecting ear 26, and a third threaded hole 28 is provided in the mounting groove 24 corresponding to the position of the two sixth through holes 27, and the mounting block 25 is connected to the connecting ring body 1 by bolts, and the second slide groove 14 is provided on the inner side of the mounting block 25.

[0052] The working principle and beneficial effects of the above technical solution are:

[0053] When in use, the mounting block 25 is first installed into the mounting groove 24 by bolts. The arrangement of the mounting block 25 in this embodiment can reduce the difficulty of drilling and slotting directly on the connecting ring body 1, and facilitates processing and production.

[0054] Embodiment 5

[0055] like Figure 5 to Figure 6 As shown, based on the first embodiment, in this embodiment, a fourth threaded hole 29 is provided on the side wall of the same side of the connecting ring body 1 at the upper and lower ends of the opening 3, a mounting rod 30 is provided in the fourth threaded hole 29, and a warning device is provided between the two mounting rods 30. The warning device includes an upper hanging rod 31 and a lower hanging rod 32, the upper end of the upper hanging rod 31 is hooked with the installation rod 30 arranged above, and the lower end of the lower hanging rod 32 is hooked with the installation rod 30 arranged below, a gap is left between the lower end of the upper hanging rod 31 and the upper end of the lower hanging rod 32, and the lower end of the upper hanging rod 31 and the lower hanging rod 32 are wrapped and connected by an insulating layer 33, or the upper end of the lower hanging rod 32 and the upper hanging rod 31 are wrapped and connected by an insulating layer 33, and a bag body 34 is also sealed on the outside of the upper hanging rod 31 and the lower hanging rod 32, the bag body 34 is in a relaxed state, a conductive liquid is arranged in the bag body 34, a placement bag 35 is arranged on the outside of the bag body 34, a warning light 36 and a battery 37 are arranged in the placement bag 35, and the upper hanging rod 31 is connected in series with the warning light 36, the battery 37 and the lower hanging rod 32.

[0056] The working principle and beneficial effects of the above technical solution are:

[0057] When in use, after the rope loop or wire rope is installed, the upper hanging rod 31 and the lower hanging rod 32 of the warning device are respectively connected to the two installation rods 30. When the opening 3 of the connecting ring body 1 is displaced and reaches a preset value, the upper hanging rod 31 and the lower hanging rod 32 are separated on opposite sides, and the conductive liquid enters the insulating layer 33, so that the upper hanging rod 31 and the lower hanging rod 32 are electrically connected via the conductive liquid, so that the warning light 36 is lit, and the lifting deformation reaches a certain degree, and timely maintenance and replacement are required.

[0058] Embodiment 6

[0059] like Figures 7 and 8As shown, in this embodiment, a C-shaped connecting ring manufacturing device includes a base 38, and first guide rails 39 are also horizontally arranged on the front and rear sides of the base 38, and two first clamping mechanisms 40 are slidably arranged on the first guide rails 39. Two second guide rails 41 are vertically arranged on the left and right sides of the base 38, and two second clamping mechanisms 42 are slidably arranged on the second guide rails 41. The first clamping mechanism 40 includes a first telescopic rod 40-1, and a first moving block 40-2 is arranged at the bottom of the first telescopic rod 40-1. The first moving block 40-2 slides in the first guide rail 39, a fourth telescopic rod 40-4 is arranged at the top of the extended end of the first telescopic rod 40-1, a clamping claw 40-3 is arranged at the extended end of the fourth telescopic rod 40-4, the second clamping mechanism 42 includes a second telescopic rod 42-1, a second moving block 42-2 is arranged at the bottom of the second telescopic rod 42-1, the second moving block 42-2 slides in the second guide rail 41, a third telescopic rod 42-3 is arranged horizontally at the top of the extended end of the second telescopic rod 42-1, and a clamping piece 42-4 is arranged at the extended end of the third telescopic rod 42-3. In this embodiment, the first moving block 40-2 and the second moving block 42-2 are both fixed in position by using bolts to respectively press the first guide rail 39 and the second guide rail 41 through the threaded holes on both sides. The clamping claw 40-3 in this embodiment adopts Figure 8 The configuration in is similar to the traditional structure of the workbench fixture and is the prior art.

[0060] The working principle of the above technical solution is:

[0061] During use, when the connecting ring body 1 needs to be fixed horizontally, the two first clamping mechanisms 40 on the same side are used to clamp the upper and lower ends of the opening 3 of the connecting ring body 1, and then the two clamping mechanisms on the other side are used to clamp the other side of the connecting ring body 1, and by adjusting the four first telescopic rods 40-1, the connecting ring body 1 is placed in a horizontal state.

[0062] When the connecting ring body 1 needs to be fixed longitudinally for processing, the four clamping mechanisms on the second guide rails 41 on the left and right sides correspond to each other and clamp the two ends of the lower side of the connecting ring body 1 respectively, and then the four clamping mechanisms on the second guide rails 41 on the left and right sides correspond to each other and clamp the two ends of the upper side of the connecting ring body 1 respectively. The connecting ring body 1 is in a vertical state and the second slide groove 14 is in a horizontal state by adjusting the second telescopic rod 42-1 and the third telescopic rod 42-3.

[0063] The above are only preferred specific implementations of the present invention; however, 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 solutions and improved concepts 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 C-shaped connecting ring, characterized in that: The invention comprises a connecting ring body (1), wherein an intermediate stopper (2) is transversely arranged in the middle of the connecting ring body (1), an opening (3) is arranged on one side of the connecting ring body (1), a connecting cover (4) is arranged on the connecting ring body (1) at the opening (3), one end of the connecting cover (4) is rotatably connected to the connecting ring body (1), and the other end of the connecting cover (4) is detachably connected to the connecting ring body (1), a first sliding groove (13) is arranged on the inner side of the connecting cover (4), and a second sliding groove (14) is arranged on the inner side of the connecting ring body (1) corresponding to the opening (3), and sliders (15) are respectively arranged at both ends of the intermediate stopper (2), and the two sliders (15) are respectively arranged in the first sliding groove (13) and the second sliding groove (14); A first connection block (5) is provided at one end of the connection ring body (1) at the opening (3), a first through hole (6) is provided in the middle of the first connection block (5), a fork head (7) is provided at one end of the connection cover (4), a second through hole (8) is provided on the fork head (7), the fork head (7) is rotatably connected to the first connection block (5) via a pin passing through the second through hole (8) and the first through hole (6), a step surface (9) is provided at the other end of the connection ring body (1) at the opening (3), a first threaded hole (10) is provided on the step surface (9), a second connection block (11) is provided at the other end of the connection cover (4), a third through hole (12) is provided on the second connection block (11) corresponding to the first threaded hole (10), and the second connection block (11) is fastened to the connection ring body (1) by bolts; The connection cover (4) comprises an upper half (4-1) and a lower half (4-2); the upper half (4-1) is an L-shaped structure and comprises a first vertical section (4-11) and a first horizontal section (4-12) located at the lower end of the first vertical section (4-11); the fork (7) is arranged at the top end of the first vertical section (4-11); the first horizontal section (4-12) is provided with a fourth through hole (4-13); the lower half (4-2) is a C-shaped structure and comprises a second vertical section (4-21); the top end of the second vertical section (4-21) is provided with a second through hole (4-13); horizontal section (4-22), the bottom end of the second vertical section (4-21) is provided with a third horizontal section (4-23) extending toward the inside of the connecting ring body (1), the second connecting block (11) is provided at the lower part of one end of the third horizontal section (4-23) facing the inside of the connecting ring body (1), the second horizontal section (4-22) is penetrated by a fifth through hole (4-24), the first horizontal section (4-12) and the second horizontal section (4-22) are fastened and connected by nuts after bolts pass through the third through hole (12) and the fourth through hole (4-13); A fourth threaded hole (29) is provided on the side wall of the same side of the connecting ring body (1) at the upper and lower ends of the opening (3), a mounting rod (30) is provided in the fourth threaded hole (29), and a warning device is provided between the two mounting rods (30); The warning device comprises an upper hanging rod (31) and a lower hanging rod (32), the upper end of the upper hanging rod (31) being hooked to the mounting rod (30) arranged above, the lower end of the lower hanging rod (32) being hooked to the mounting rod (30) arranged below, a gap being left between the lower end of the upper hanging rod (31) and the upper end of the lower hanging rod (32), and the lower end of the upper hanging rod (31) and the lower hanging rod (32) being wrapped and connected by an insulating layer (33) or the upper end of the lower hanging rod (32) and the upper hanging rod (30) being connected. 1) being wrapped and connected by an insulating layer (33), a bag body (34) is also sealed on the outside of the upper hanging rod (31) and the lower hanging rod (32), the bag body (34) is in a relaxed state, a conductive liquid is arranged in the bag body (34), a placement bag (35) is arranged on the outside of the bag body (34), a warning light (36) and a battery (37) are arranged in the placement bag (35), and the upper hanging rod (31) is connected in series with the warning light (36), the battery (37) and the lower hanging rod (32); When in use, after the rope loop or the steel wire rope is installed, the upper hanging rod (31) and the lower hanging rod (32) of the warning device are connected to the two installation rods (30) respectively, and when the opening (3) of the connecting ring body (1) is displaced and reaches a preset value, the upper hanging rod (31) and the lower hanging rod (32) are separated on opposite sides, and the conductive liquid enters the insulating layer (33), so that the upper hanging rod (31) and the lower hanging rod (32) are electrically connected via the conductive liquid, thereby lighting the warning light (36).

2. A C-shaped connecting ring according to claim 1, characterized in that: The slider (15) is provided with a second threaded hole (16) at both upper and lower ends, and a pressure rod (17) is connected to the inner thread of the second threaded hole (16). The second slide groove (14) is provided with a first mounting hole (18) at both upper and lower ends, and a first spring (19) and a second spring (20) are respectively arranged in the upper and lower first mounting holes (18). The other ends of the upper and lower pressure rods (17) on one side of the slider (15) slide in the upper and lower first mounting holes (18) respectively, and the upper and lower pressure rods (17) are respectively in contact with the first spring (19) and the second spring (20). The first slide groove (13) is provided with a second mounting hole (21) at both upper and lower ends, and a third spring (22) and a fourth spring (23) are respectively arranged in the upper and lower second mounting holes (21). The other ends of the upper and lower pressure rods (17) on the other side of the slider (15) slide in the second mounting holes (21) respectively, and the upper and lower pressure rods (17) are respectively in contact with the third spring (22) and the fourth spring (23).

3. A C-shaped connecting ring according to claim 1, characterized in that: The third through hole (12) is a countersunk hole.

4. A C-shaped connecting ring according to claim 1, characterized in that: The upper and lower ends of the middle stopper (2) are arc-shaped.

5. A C-shaped connecting ring according to claim 1, characterized in that: A mounting groove (24) is provided on the inner side of the connecting ring body (1) corresponding to the opening (3), and a mounting block (25) is detachably provided in the mounting groove (24). Connecting ears (26) are provided at the upper and lower ends of the mounting block (25), and a sixth through hole (27) is provided through the connecting ear (26). A third threaded hole (28) is provided at positions of the mounting groove (24) corresponding to the two sixth through holes (27). The mounting block (25) is connected to the connecting ring body (1) by bolts, and the second slide groove (14) is provided on the inner side of the mounting block (25).

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