A high tensile cable

Abstract

The invention relates to the technical field of cables, and specifically discloses a high-tensile cable, comprising: a cable body, wherein one section of the cable body is a curved section, and the curved section is disconnected in the middle; an elastic band, which is arranged on the outside of the curved section, and the two ends of the elastic band are respectively fixedly connected to the two ends of the curved section, and two cutting grooves are opened in the middle of the elastic band and close to the edge of the elastic band, so that the middle part of the elastic band is divided into a middle band and two edge bands; a left joint and a right joint, which are respectively installed at the two ends of the curved section disconnection, and the left joint is elastically hinged with a cutting blade, and the right joint is installed with a pushing structure for pushing the cutting blade to rotate outward, when the tension applied to the cable body exceeds the limit, the cutting blade contacts the middle band and cuts it, and the edge band buffers the impact force, and then the edge band breaks, thereby reducing the impact force generated during the break and reducing the damage caused by the cable break.

Description

Technical Field

[0001] The invention relates to the technical field of cables, and in particular to a high-tensile-resistance cable. Background Art

[0002] With the widespread application of modern automation equipment, drag chain cables need to be frequently moved during use. Therefore, the requirements for the flexibility, tensile strength, wear resistance and other properties of drag chain cables are relatively high. The quality of these properties directly affects the service life of the drag chain cables. At present, the requirements for tensile strength of drag chain cables are mostly to use extruded insulated steel wire rope as a core wire of the cable stranding, and use the steel wire rope to share the tension of the drag chain cable during operation.

[0003] The Chinese patent document with the authorization announcement number CN211929080U discloses a tensile flat cable, in which the conductor copper wire is extruded with a conductor insulation layer of highly tear-resistant silicone rubber to form a wire core. The soft steel wire is extruded with a tensile protective layer of highly tear-resistant silicone rubber to form a tensile cable. The soft steel wire is specifically a torsion-free self-supporting soft steel wire, which is mainly used to bear operating tension. Multiple groups of cores and tensile cables are arranged horizontally, and an outer sheath of highly tear-resistant silicone rubber is wrapped around them, and silicone rubber is filled between the outer sheath and the cores and tensile cables. At least one group of cores is provided in every two groups of tensile cables. The patent authorization document discloses the use of a flat cable design and the addition of steel wire ropes on both horizontal sides of the cable, thereby increasing the bending performance and tensile resistance of the cable, thereby extending the service life of the cable and reducing safety hazards.

[0004] Since the existing high-tensile cables can withstand higher tensile forces, when an unexpected situation occurs and the tensile force on the cable exceeds the limit, the cable will break somewhere, and the broken part of the cable will be thrown out at a higher speed, hitting people or equipment and causing greater damage. In addition, the broken part of the cable will be uneven and inconvenient to re-connect. Summary of the invention

[0005] The present invention provides a high-tensile strength cable, aiming to solve the problem in the related art that safety accidents are prone to occur after the cable breaks, and it is inconvenient to repair it afterwards.

[0006] A high tensile strength cable comprises: a cable body, one section of the cable body is a curved section, and the curved section is disconnected in the middle;

[0007] An elastic band is arranged outside the curved section, two ends of the elastic band are respectively fixedly connected to the two ends of the curved section, and two cut grooves are opened in the middle of the elastic band and close to the edge of the elastic band, so that the middle part of the elastic band is divided into a middle band and two edge bands;

[0008] The left joint and the right joint are respectively installed at the two ends of the disconnection of the bending section, the left joint is elastically hinged with a cutting blade, the right joint is installed with a push structure for pushing the cutting blade to rotate outward, and a one-way structure is installed between the left joint and the right joint;

[0009] When the left connector moves toward the right connector, the resistance it encounters is small. When the left connector moves away from the right connector, the resistance it encounters is large. When the cable body is subjected to a large pulling force, the curved section gradually flattens, and the left connector and the right connector move away from each other, causing the push structure to push the cutting blade to rotate, thereby causing the cutting blade to contact the middle belt and cut it.

[0010] The effect is as follows: when the left connector moves toward the right connector, the resistance encountered is small; when the left connector moves away from the right connector, the resistance encountered is large; when the cable body is subjected to a large pulling force, the curved section gradually flattens, and the left connector and the right connector move in opposite directions, so that the pushing structure pushes the cutting blade to rotate, so that the cutting blade contacts the middle belt and cuts it, and the edge belt buffers the impact force, and then the edge belt breaks, thereby reducing the impact force generated when breaking and reducing the damage caused by the cable breaking.

[0011] Preferably, the cable body is a flat cable, the bending section is serpentine, and an elastic strip for maintaining the serpentine shape is provided in the bending section. The serpentine bending of the flat cable can effectively reduce the volume when contracted, and no twisting occurs when flattened.

[0012] Preferably, steel wires are provided inside the flat cable near the front and rear edges, and steel sleeves are fixedly connected to both ends of the elastic band. The steel sleeves are sleeved on the flat cable, and the front and rear inner sides of the steel sleeves pass through the outer layer of the cable body and are fixedly connected to the steel wires. The steel wires improve the tensile strength of the cable and ensure the position of the steel sleeves at the same time.

[0013] Preferably, the one-way structure includes a rotating plate whose left end is hinged on the right joint, and an elastic member is connected between the rotating plate and the right joint. When the left joint moves and inserts into the right joint, the cutting blade presses against the rotating plate to rotate the rotating plate inward until the cutting blade passes over the rotating plate, thereby facilitating the connection between the left joint and the right joint and preventing the two from easily loosening afterwards.

[0014] Preferably, the pushing structure includes an arc groove arranged on the left side of the cutting blade, and the right end of the rotating plate is an arc surface adapted to the arc groove. When the left joint and the right joint move away from each other, the arc surface presses against the arc groove, causing the rotating plate and the cutting blade to flip outward until the arc surface disengages from the arc groove.

[0015] Preferably, the cutting blade has a serrated edge, and the cutting blade makes point contact with the middle band, making it easier to rupture the middle band.

[0016] Preferably, the length of the cutting blade is not greater than the width of the middle belt, and the middle portion of the cutting blade corresponds to the middle portion of the middle belt.

[0017] Preferably, the width ratio of the middle band to the edge band is not less than 3:1.

[0018] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0019] When the tension on the cable body exceeds the limit, the cutting blade breaks the middle belt, and the impact force generated by the break acts on the edge belt, which is stretched to the limit for buffering and finally breaks, thereby reducing the impact force generated when it breaks, reducing the damage caused by the cable break and avoiding major safety accidents. During maintenance, the right connector is reinserted into the opening of the left connector, and the broken elastic belt is removed from the steel sleeve and replaced with a new elastic belt. Therefore, maintenance is convenient to solve the problem that the existing cable break is uneven and inconvenient to reconnect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention in a contracted state.

[0021] Figure 2 It is a schematic diagram of the structure of the present invention in the extended state.

[0022] Figure 3 It is a cross-sectional view of the present invention in a contracted state.

[0023] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0024] Figure 5 It is a cross-sectional view of the present invention in the extended state.

[0025] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at point B in the middle.

[0026] Figure 7 It is a disassembled diagram of the left joint and the right joint in the present invention.

[0027] Figure 8 It is a cross-sectional view of the steel sleeve in the present invention.

[0028] Reference numerals:

[0029] 1. Cable body; 11. Bending section; 12. Steel wire; 13. Steel sleeve; 2. Elastic belt; 21. Middle belt; 22. Edge belt; 3. Left joint; 31. Cutting blade; 311. Arc groove; 32. Shrapnel; 33. Accommodating groove; 4. Right joint; 41. Rotating plate; 42. Elastic part. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0031] like Figure 1 and Figure 2 As shown, a high tensile cable comprises: a cable body 1, an elastic band 2, a left joint 3 and a right joint 4, one section of the cable body 1 is a curved section 11, the curved section 11 is disconnected in the middle, the left joint 3 and the right joint 4 are respectively installed at the two ends of the disconnection, there are two elastic bands 2, and they are symmetrically arranged on the outside of the curved section 11, the two ends of the elastic band 2 are respectively fixedly connected to the two ends of the curved section 11, after the two ends of the cable body 1 are subjected to tension, the elastic band 2 is gradually stretched during the flattening of the curved section 11.

[0032] The cable body 1 is a flat cable, and the curved section 11 is serpentine, and steel wires 12 are arranged inside the flat cable near the front and rear edges, and steel sleeves 13 are arranged at both ends of the curved section 11, and the steel sleeves 13 are sleeved on the flat cable, and the inner sides of the front and rear ends of the steel sleeves 13 pass through the outer layer of the cable body 1 and are fixedly connected to the steel wires 12 (such as Figure 8 As shown in the figure), the end of the elastic band 2 is detachably connected to the steel sleeve 13 (for example, by a plate buckle or bolt connection, not shown in the figure).

[0033] Two cutting grooves are opened in the middle of the elastic band 2 and close to the edge of the elastic band 2, so that the middle part of the elastic band 2 is divided into a middle band 21 and two edge bands 22. The width ratio of the middle band 21 to the edge band 22 is not less than 3:1, preferably 4:1. The material of the elastic band 2 is preferably rubber.

[0034] like Figure 1-Figure 7 As shown, the right side of the left joint 3 is opened for inserting the right joint 4. The upper and lower sides of the left joint 3 are provided with a receiving groove 33 that passes through the interior. A cutting blade 31 is arranged in the receiving groove 33. The blade of the cutting blade 31 is serrated. A spring piece 32 is connected between the cutting blade 31 and the left joint 3, which is used to make the cutting blade 31 be received in the receiving groove 33 in the initial state. The length of the cutting blade 31 is not greater than the width of the middle band 21, and the middle part of the cutting blade 31 corresponds to the middle part of the middle band 21.

[0035] A pushing structure and a one-way structure are installed between the left joint 3 and the right joint 4. When the left joint 3 moves toward the right joint 4 and is inserted, the resistance encountered is small. When the left joint 3 moves away from the right joint 4 and is separated from the right joint 4, the resistance encountered is large. When the cable body 1 is subjected to a large pulling force, the curved section 11 gradually flattens, and the left joint 3 and the right joint 4 move in opposite directions, so that the pushing structure pushes the cutting blade 31 to rotate, so that the cutting blade 31 contacts the middle belt 21 and cuts it.

[0036] The one-way structure includes a rotating plate 41 hinged at its left end on the right joint 4, and an elastic member 42 (preferably a spring sheet, such as Figure 6 As shown in the figure, when the left joint 3 moves and inserts into the right joint 4, the back of the cutting blade 31 presses against the rotating plate 41 to rotate the rotating plate 41 inward until the cutting blade passes over the rotating plate 41. At this time, the left joint 3 is connected to the right joint 4.

[0037] The push structure includes an arc groove 311 arranged on the left side of the cutting blade 31, and the right end of the rotating plate 41 is an arc surface adapted to the arc groove 311. When the two ends of the cable body 1 are subjected to tension, the curved section 11 is gradually flattened. At the same time, when the left connector 3 and the right connector 4 move away from each other, the arc surface presses against the arc groove 311, causing the spring sheet 32 ​​to deform, thereby causing the rotating plate 41 and the cutting blade 31 to flip outward (such as Figure 6 As shown in the figure), when the tension on the cable body 1 exceeds the limit value, the cutting blade 31 flips outward to the limit, the blade contacts the middle band 21 and cuts it, then the arc surface separates from the arc groove 311, and the left connector 3 is separated from the right connector 4.

[0038] Working principle: When the tension on both ends of the cable body 1 gradually increases, the curved section 11 gradually tends to flatten, and the elastic band 2 gradually stretches. When the tension on the cable body 1 reaches a certain threshold, the left connector 3 and the right connector 4 move in opposite directions, and the arc surface presses against the arc groove 311, causing the spring piece 32 to deform, so that the rotating plate 41 and the cutting blade 31 flip outward, so that the blade of the cutting blade 31 extends out of the receiving groove 33. The tension continues to increase. After exceeding the limit value, the blade contacts the middle band 21 and cuts off. At this time, the elastic coefficient of the elastic band 2 decreases, and then the arc surface separates from the arc groove 311, and the left connector 3 and The right joint 4 is separated. At this time, the impact force generated by the breakage of the middle belt 21 and the impact force generated by the separation of the left joint 3 and the right joint 4 act on the edge belt 22. The edge belt 22 is stretched to the limit for buffering. Finally, the edge belt 22 breaks, thereby reducing the impact force generated when it breaks, reducing the damage caused by the cable break, and avoiding major safety accidents. During maintenance, the right joint 4 is reinserted into the opening of the left joint 3, and the broken elastic belt 2 is removed from the steel sleeve 13 and replaced with a new elastic belt 2. Therefore, maintenance is convenient to solve the problem that the existing cable break is uneven and inconvenient to reconnect.

[0039] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A high tensile cable, comprising: The cable body is characterized in that one section of the cable body is a curved section, and the curved section is disconnected in the middle; An elastic band is arranged outside the curved section, two ends of the elastic band are respectively fixedly connected to the two ends of the curved section, and two cut grooves are opened in the middle of the elastic band and close to the edge of the elastic band, so that the middle part of the elastic band is divided into a middle band and two edge bands; The left joint and the right joint are respectively installed at the two ends of the disconnection of the bending section, the left joint is elastically hinged with a cutting blade, the right joint is installed with a push structure for pushing the cutting blade to rotate outward, and a one-way structure is installed between the left joint and the right joint; When the left connector moves toward the right connector, the resistance it encounters is small. When the left connector moves away from the right connector, the resistance it encounters is large. When the cable body is subjected to a large pulling force, the curved section gradually flattens, and the left connector and the right connector move away from each other, causing the push structure to push the cutting blade to rotate, thereby causing the cutting blade to contact the middle belt and cut it.

2. The high tensile strength cable according to claim 1, characterized in that: The cable body is a flat cable, the curved section is serpentine, and an elastic strip for maintaining the serpentine shape is arranged inside the curved section.

3. The high tensile strength cable according to claim 2, characterized in that: Steel wires are arranged inside the flat cable near the front and rear edges, and steel sleeves are fixedly connected to both ends of the elastic band. The steel sleeves are sleeved on the flat cable, and the front and rear inner sides of the steel sleeves pass through the outer layer of the cable body and are fixedly connected to the steel wires.

4. The high tensile strength cable according to claim 3, characterized in that: The one-way structure includes a rotating plate whose left end is hinged on the right joint, and an elastic member is connected between the rotating plate and the right joint. When the left joint moves and inserts into the right joint, the cutting blade presses against the rotating plate to rotate the rotating plate inward until the cutting blade passes over the rotating plate.

5. The high tensile strength cable according to claim 4, characterized in that: The pushing structure includes an arc groove arranged on the left side of the cutting blade, and the right end of the rotating plate is an arc surface adapted to the arc groove. When the left joint and the right joint move away from each other, the arc surface presses against the arc groove, causing the rotating plate and the cutting blade to flip outward until the arc surface is separated from the arc groove.

6. The high tensile strength cable according to claim 1, characterized in that: The cutting blade has a sawtooth shape.

7. The high tensile strength cable according to any one of claims 1 to 6, characterized in that: The length of the cutting blade is not greater than the width of the middle belt, and the middle portion of the cutting blade corresponds to the middle portion of the middle belt.

8. The high tensile strength cable according to claim 7, characterized in that: The width ratio of the middle zone to the edge zone is not less than 3:1.

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