Connection ring with overload warning and protection function

Abstract

The present invention discloses a connecting ring with overload warning and protection functions, comprising a main body connected to a rigging, the shape of the main body being an arc-shaped structure with one end open, a first step hole and a second step hole being respectively arranged on the side of the main body close to the open end, the second step hole being located at the bottom of the first step hole, an overload pin being passed through the first step hole, a protection pin being passed through the second step hole, and a bearing ring for connecting to a rescued object being passed through the overload pin and the protection pin; the present invention can improve the safety during the rescue process, and has a simple structure and flexible operation.

Description

Technical Field

[0001] The invention relates to the field of rescue, and in particular to a connecting ring with overload warning and protection functions. Background Art

[0002] During the accident rescue process, due to the complex on-site environment and unpredictable rescue pulling force, overloading is prone to occur, causing damage to the rescued object, or when the rescue rigging breaks due to overloading, the impact force will cause the rigging to be thrown out, injuring people and facilities around. Therefore, a new connection ring with overload warning and protection functions is urgently needed to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a connecting ring with overload warning and protection functions to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides a connecting ring with overload warning and protection functions, including a main body connected to a rigging, the shape of the main body being an arc-shaped structure with one end open, and the side surfaces of the main body close to the open end are respectively provided with a first step hole and a second step hole, the second step hole is located at the bottom of the first step hole, an overload pin is passed through the first step hole, a protection pin is passed through the second step hole, and a load-bearing ring for connecting to a rescued object is passed through the overload pin and the protection pin.

[0005] Preferably, a first through hole is provided at the top of the carrying ring, and the overload pin passes through the first through hole; a groove body is provided at the bottom of the carrying ring, and the protection pin passes through the groove body.

[0006] Preferably, the first step hole includes a first step pin hole, an end of the first step pin hole close to the side surface of the main body is provided with a first chamfer, an end of the first step pin hole away from the first chamfer is provided with a first step circular hole, and the overload pin is located in the first step pin hole.

[0007] Preferably, the second step hole includes a second step pin hole, the second step pin hole has a second chamfer at one end close to the side of the main body, and a second step circular hole at one end away from the second chamfer, and the protective pin is located in the second step pin hole.

[0008] Preferably, a second through hole is provided at one end of the main body near the first chamfer, the second through hole passes through the main body, the axis of the second through hole passes through the center of the first step pin hole and is perpendicular to the axis of the first step pin hole, the second through hole is provided at one end of the main body near the second chamfer, the axis of the second through hole passes through the center of the second step pin hole and is perpendicular to the axis of the second step pin hole, and an anti-slip component is embedded in the second through hole.

[0009] Preferably, the anti-dropping member is an elastic cylindrical pin, and the elastic cylindrical pin is arranged in the second through hole.

[0010] Preferably, a plurality of annular grooves are provided in the second through hole, the annular grooves are located at both ends of the first step pin hole and the second step pin hole, a plurality of limit strips are provided at both ends of the elastic cylindrical pin, and the annular grooves are adapted to the limit strips.

[0011] Preferably, the elastic cylindrical pin is provided with an opening, and two ends of the opening are respectively provided with a plurality of first saw teeth and a plurality of second saw teeth, and the first saw teeth and the second saw teeth are matched.

[0012] Preferably, the diameter of the first step circular hole is smaller than the diameter of the first step pin hole, and the diameter of the second step circular hole is smaller than the diameter of the second step pin hole.

[0013] Preferably, the overload pin includes a connecting column and end caps fixedly connected to both ends of the connecting column, a third chamfer is provided at one end of the end cap away from the connecting column, the end cap and the connecting column are an integrally formed structure, and the connecting column abuts against the top of the first through hole.

[0014] The present invention discloses the following technical effects: the breaking load of the overload warning function is the same as the carrying capacity of the rescued object. Once overload occurs during use, the overload pin will break, playing a warning role during use. After the overload pin breaks, the protection pin function will play a role, and the overall tension of the rigging will act on the protection pin, which can protect the matching rigging from breaking and flying out when the overload pin breaks and fails, thereby greatly improving the safety during the rescue process. The structure is simple and the operation is flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1It is a schematic diagram of the assembly structure of the connection ring with overload warning and protection functions in the present invention;

[0017] Figure 2 This is an assembly front view of the connecting ring with overload warning and protection functions in the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the main body;

[0019] Figure 4 is a side view of the main body;

[0020] Figure 5 is a structural schematic diagram of the overload pin;

[0021] Figure 6 It is a structural schematic diagram of an elastic cylindrical pin;

[0022] Figure 7 is a schematic diagram of the structure of the bearing ring;

[0023] Figure 8 It is a structural schematic diagram of Example 2;

[0024] Fig. 9 It is a side view of the body in Example 3;

[0025] Fig.10 It is a structural schematic diagram of the protection mechanism in Example 3;

[0026] Wherein: 1. body; 2. first opening; 3. first step hole; 31. first step pin hole; 32. first chamfer; 33. first step round hole; 4. second step hole; 41. second step pin hole; 42. second chamfer; 43. second step round hole; 5. load ring; 6. overload pin; 61. connecting column; 62. end; 63. third chamfer; 7. first through hole; 8. protection pin; 9. pear-shaped groove; 10. Two through holes; 11. Elastic cylindrical pin; 12. Limiting strip; 13. Second opening; 14. First serration; 15. Second serration; 16. Limiting groove; 17. Reinforcement layer; 18. Groove; 19. Elastic sheet; 20. Protective plate; 21. Cavity; 22. Bump; 23. Pressing head; 24. Spring; 25. Limiting plate; 26. Connecting body; 27. Connecting line; 28. Pillar; 29. ​​Flexible clip; 30. Guide wheel. DETAILED DESCRIPTION

[0027] 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.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] Reference Figure 1-7 The present invention provides a connecting ring with overload warning and protection functions, including a main body 1 connected to a rigging, the main body 1 is in the shape of an arc structure with a first opening 2 at one end, specifically a U-shaped structure, a first step hole 3 and a second step hole 4 are respectively provided on the side of the main body 1 close to the first opening 2, the second step hole 4 is located at the bottom of the first step hole 3, an overload pin 6 is passed through the first step hole 3, a protection pin 8 is passed through the second step hole 4, and a load ring 5 for connecting with a rescued object is passed through the overload pin 6 and the protection pin 8.

[0031] The main body 1 is connected to the rigging, and the load-bearing ring 5 is connected to the rescued object. During use, if the tensile load exceeds the load-bearing capacity of the rescued object, the overload pin 6 will break first, which will serve as a warning and the loading should be stopped. At the same time, at the moment the overload pin 6 breaks, the overall tension of the rigging will act on the protective pin 8, which can protect the supporting rigging from breaking and flying out when the overload pin 6 breaks and fails, thereby greatly improving the safety during the rescue process.

[0032] A first through hole 7 is provided at the top of the load ring 5, and the overload pin 6 passes through the first through hole 7. A groove body is provided at the bottom of the load ring 5, and the protection pin 8 passes through the groove body. The groove body is specifically a pear-shaped groove 9. The top diameter of the pear-shaped groove 9 is smaller than the bottom diameter of the pear-shaped groove 9. The advantage of the pear-shaped groove 9 is that it provides a larger effective space for the rescue object, and can make the connection more convenient and the rescued object move more freely.

[0033] According to a further optimization scheme, the first step hole 3 includes a first step pin hole 31, an end of the first step pin hole 31 close to the side of the main body 1 is provided with a first chamfer 32, an end of the first step pin hole 31 away from the first chamfer 32 is provided with a first step circular hole 33, and the overload pin 6 is located in the first step pin hole 31.

[0034] The first step pin hole 31 is used to place the overload pin 6. The overload pin 6 is calculated based on the required breaking tensile force value and the breaking strength value of the material by repeatedly calculating the cross-sectional area of ​​the overload pin, and then a heat treatment process is formulated. After the heat treatment, it is tested and verified, and the parameters are adjusted according to the test results. Finally, the heat treatment process is determined in which the diameter of the overload pin 6 is consistent with the breaking value. Its breaking load is the same as the carrying capacity of the rescued object. Once an overload occurs during use, the overload pin 6 will break, which serves as a warning during use. The first chamfer 32 is arranged to facilitate the insertion of the overload pin 6 into the first step pin hole 31, and the first step circular hole 33 limits the overload pin 6 to prevent the overload pin 6 from falling out. At the same time, it is convenient to remove the overload pin 6 from the first step pin hole 31 after use.

[0035] According to a further optimization scheme, the second step hole 4 includes a second step pin hole 41 , an end of the second step pin hole 41 close to the side of the main body 1 is provided with a second chamfer 42 , an end of the second step pin hole 41 away from the second chamfer 42 is provided with a second step circular hole 43 , and the protective pin 8 is located in the second step pin hole 41 .

[0036] The second step pin hole 41 is used to place the protection pin 8. The protection pin 8 functions after the overload pin 6 breaks. The overall tension of the rigging will act on the protection pin 8, which can protect the matching rigging from breaking and flying out when the overload pin 6 breaks and fails. The second chamfer 42 on the second step pin hole 41 facilitates the insertion of the protection pin 8 into the second step pin hole 41. The second step circular hole 43 limits the protection pin 8 to prevent the protection pin 8 from falling out. At the same time, it is convenient to remove the protection pin 8 from the second step pin hole 41 after use.

[0037] A further optimized solution is provided at one end of the main body 1 near the first chamfer 32, and the second through hole 10 passes through the main body 1. The axis of the second through hole 10 passes through the center of the first step pin hole 31 and is perpendicular to the axis of the first step pin hole 31. A second through hole 10 is provided at one end of the main body 1 near the second chamfer 42, and the axis of the second through hole 10 passes through the center of the second step pin hole 41 and is perpendicular to the axis of the second step pin hole 41. An anti-slip component is embedded in the second through hole 10.

[0038] According to a further optimized solution, the anti-dropping member is an elastic cylindrical pin 11 , and the elastic cylindrical pin 11 is arranged in the second through hole 10 .

[0039] The elastic cylindrical pin 11 is used to prevent the overload pin 6 from falling out of the first step pin hole 31 after being broken during use, thereby accidentally injuring staff or other facilities; the elastic cylindrical pin 11 is also used to prevent the protection pin 8 from falling out during use.

[0040] A further optimized solution is to prevent the elastic cylindrical pin 11 from escaping from the second through hole 10, a plurality of annular grooves are provided in the second through hole 10, and the annular grooves are located at both ends of the first step pin hole 31 and the second step pin hole 41, and a plurality of limit strips 12 are provided at both ends of the elastic cylindrical pin 11, and the annular grooves are adapted to the limit strips 12.

[0041] To further optimize the solution, in order to place the elastic cylindrical pin 11 more firmly in the second through hole 10 and to facilitate the removal of the elastic cylindrical pin 11 from the second through hole 10, a second opening 13 is provided on the elastic cylindrical pin 11, and a plurality of first serrations 14 and a plurality of second serrations 15 are respectively provided at both ends of the second opening 13, and the first serrations 14 and the second serrations 15 are matched with each other.

[0042] To further optimize the solution, in order to facilitate the limiting of the overload pin 6 and the protection pin 8 and prevent the overload pin 6 and the protection pin 8 from falling out during use, the diameter of the first step circular hole 33 is smaller than the diameter of the first step pin hole 31, and the diameter of the second step circular hole 43 is smaller than the diameter of the second step pin hole 41.

[0043] A further optimized solution is that the overload pin 6 includes a connecting column 61 and an end cap 62 fixedly connected to both ends of the connecting column 61, and a third chamfer 63 is provided at one end of the end cap 62 away from the connecting column 61. The end cap 62 and the connecting column 61 are an integrally formed structure, and the connecting column 61 abuts against the top of the first through hole 7.

[0044] The two end heads 62 are inserted into the first step pin hole 31 , and the third chamfer 63 is provided to facilitate the end heads 62 to be inserted into the first step pin hole 31 .

[0045] According to a further optimization scheme, the thickness of the top of the body 1 is smaller than the thickness of the bottom opening end of the body 1 .

[0046] Example 2

[0047] Based on Example 1, Figure 8 A limiting groove 16 is fixedly connected to the inner sides of both ends of the elastic cylindrical pin 11, a reinforcement layer 17 is fixedly connected to the middle of the inner side of the elastic cylindrical pin 11, and grooves 18 are fixedly connected to both ends of the reinforcement layer 17, and an elastic sheet 19 is embedded between the limiting groove 16 and the groove 18.

[0048] In order to increase the elasticity of the elastic cylindrical pin 11, during use, the elastic force of the elastic cylindrical pin 11 is increased by the elastic sheets 19 on both sides of the reinforcement layer 17, and the elastic sheets 19 act on the main body 1. The reinforcement layer 17 is arranged in the middle of the elastic cylindrical pin 11. When the overload pin 6 breaks, the elastic cylindrical pin 11 may be impacted by the overload pin 6. The reinforcement layer 17 can increase the strength of the elastic cylindrical pin 11 to prevent it from breaking.

[0049] Example 3

[0050] The difference from Example 1 and Example 2 is that, referring to Figure 9-10 A protective mechanism is provided on one side of the body 1 close to the elastic cylindrical pin 11, and the protective mechanism includes a protective plate 20 hinged to one side of the body 1, and the other side of the protective plate 20 is detachably connected to the body 1. Two pressing parts are provided on the side of the protective plate 20 away from the hinged part, and two cavities 21 are provided on the body 1. The pressing parts and the cavities 21 are correspondingly arranged, and the tops of both sides of the cavity 21 are symmetrically fixed with protrusions 22. The pressing part includes a pressing head 23 slidably connected to the protective plate 20, and the pressing head 23 passes through the protective plate 20 and extends into the cavity 21. One end of a spring 24 is fixed to the pressing head 23, and the other end of the spring 24 is fixed to the pressing head 23. One end is fixedly connected to the top surface of the protective plate 20, and the limiting plates 25 are fixedly connected to the two sides of the end of the pressing head 23 extending into the cavity 21. A connecting body 26 is fixedly connected to the bottom of the pressing head 23, and the connecting body 26 is located in the cavity 21. One end of the connecting line 27 is fixedly connected to the connecting body 26. Pillars 28 and flexible clips 29 are symmetrically fixedly connected to the two sides of the bottom surface of the protective plate 20. The pillars 28 are located between the flexible clips 29 and the pressing head 23. The bottom of the pillars 28 is rotatably connected to a guide wheel 30. The connecting line 27 passes through the guide wheel 30 and is fixedly connected to the bottom of the flexible clip 29. The flexible clip 29 is clipped to the bottom surface of the protrusion 22.

[0051] In order to prevent the overload pin 6 and the elastic cylindrical pin 11 from popping out after breaking, a protective mechanism is provided on the side of the main body 1. When the protective plate 20 gradually approaches the top surface of the protrusion 22, a guiding slope is provided at the bottom of the end of the flexible card 29 close to the protrusion 22, so that the flexible card 29 enters the cavity 21 along the side wall of the protrusion 22. When the flexible card 29 fits with the bottom surface of the protrusion 22, the bottom surface of the protective plate 20 fits with the side surface of the main body 1, and the protective plate 20 cannot be opened at this time. When the protective plate 20 needs to be opened after use, the pressing head 23 is pressed, the pressing head 23 descends, the spring 24 in the pressing head 23 contracts, and the protective plate 20 is opened. The connector 26 and the connecting wire 27 at the bottom of the dynamic pressing head 23 descend, and the connecting wire 27 connected to the flexible clip 29 moves to one side of the pressing head 23. The guide wheel 30 can reduce the friction of the connecting wire 27 during the movement and extend the service life of the connecting wire 27. The connecting wire 27 causes the bottom of the flexible clips 29 on both sides to separate from the protrusion 22. At this time, the protective plate 20 can be opened. After the protective plate 20 is opened, the pressing head 23 is released. Under the action of the spring 24, the pressing head 23 pops up. At the same time, the limiting plate 25 limits the pressing head 23 to prevent the pressing head 23 from popping out of the protective plate 20, and the flexible clip 29 returns to a natural vertical state.

[0052] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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 should not be understood as a limitation on the present invention.

[0053] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A connecting ring with overload warning and protection functions, Features: The invention comprises a main body (1) connected to the rigging, wherein the main body (1) is in the shape of an arc structure with a first opening (2) at one end, and the side of the main body (1) close to the first opening (2) is respectively provided with a first step hole (3) and a second step hole (4), and the second step hole (4) is located at the bottom of the first step hole (3); an overload pin (6) is passed through the first step hole (3), and a protection pin (8) is passed through the second step hole (4); a load ring (5) for connecting with a rescued object is passed through the overload pin (6) and the protection pin (8); a first through hole (7) is provided at the top of the load ring (5), and the overload pin (6) passes through the first through hole (7); a groove body is provided at the bottom of the load ring (5), and the protection pin (8) passes through the groove body; The first step hole (3) comprises a first step pin hole (31), one end of the first step pin hole (31) close to the side surface of the body (1) is provided with a first chamfer (32), one end of the first step pin hole (31) away from the first chamfer (32) is provided with a first step circular hole (33), and the overload pin (6) is located in the first step pin hole (31); the second step hole (4) comprises a second step pin hole (41), one end of the second step pin hole (41) close to the side surface of the body (1) is provided with a second chamfer (42), one end of the second step pin hole (41) away from the second chamfer (42) is provided with a second step circular hole (43), and the protection pin (8) is located in the second step pin hole (41); A second through hole (10) is provided at one end of the body (1) near the first chamfer (32), the second through hole (10) passes through the body (1), the axis of the second through hole (10) passes through the center of the first step pin hole (31) and is perpendicular to the axis of the first step pin hole (31), and a second through hole (10) is provided at one end of the body (1) near the second chamfer (42), the axis of the second through hole (10) passes through the center of the second step pin hole (41) and is perpendicular to the axis of the second step pin hole (41), and an anti-dropping piece is embedded in the second through hole (10); The anti-dropping member is an elastic cylindrical pin (11), and the elastic cylindrical pin (11) is arranged in the second through hole (10).

2. The connecting ring with overload warning and protection function according to claim 1, Features: A plurality of annular grooves are provided in the second through hole (10), and the annular grooves are located at both ends of the first step pin hole (31) and the second step pin hole (41). A plurality of limit strips (12) are provided at both ends of the elastic cylindrical pin (11), and the annular grooves are adapted to the limit strips (12).

3. The connecting ring with overload warning and protection function according to claim 1, Features: The elastic cylindrical pin (11) is provided with a second opening (13), and two ends of the second opening (13) are respectively provided with a plurality of first saw teeth (14) and a plurality of second saw teeth (15), and the first saw teeth (14) and the second saw teeth (15) are matched.

4. The connecting ring with overload warning and protection function according to claim 1, Features: The diameter of the first step circular hole (33) is smaller than the diameter of the first step pin hole (31), and the diameter of the second step circular hole (43) is smaller than the diameter of the second step pin hole (41).

5. The connecting ring with overload warning and protection function according to claim 1, Features: The overload pin (6) comprises a connecting column (61) and end caps (62) fixedly connected to both ends of the connecting column (61); an end of the end cap (62) away from the connecting column (61) is provided with a third chamfer (63); the end cap (62) and the connecting column (61) are an integrally formed structure; and the connecting column (61) abuts against the top of the first through hole (7).

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