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CN-224213031-U - Anti-torsion steel wire rope safety protection piece

CN224213031UCN 224213031 UCN224213031 UCN 224213031UCN-224213031-U

Abstract

The utility model relates to the technical field of anti-torsion steel wire ropes, and particularly discloses an anti-torsion steel wire rope safety protection piece which comprises a safety sheath and an anti-torsion steel wire rope body positioned in the safety sheath, wherein the safety sheath comprises an inner sleeve and an outer sleeve which are coaxially nested, the inner sleeve is sequentially provided with an inner layer, a middle layer and an outer layer from inside to outside, the outer side wall of the outer sleeve is provided with a locking mechanism, the locking mechanism comprises a limit groove which is formed in the outer side wall of the outer sleeve, the depth of the limit groove is 2-3 mm, the width of the limit groove is 1.2 times of the diameter of the locking rope, the locking rope is formed by twisting a plurality of strands of stainless steel wires, the surface of the limit groove is coated with a polyurethane anti-skid layer, the diameters of the limit groove are 4-6 mm, and two fixing plates which are symmetrically arranged on two sides of the limit groove are fixed on the outer side of the outer sleeve through welding, and are in double looseness prevention through combination of mechanical locking and thread pre-tightening, and long-term stability of locking force under dynamic load (such as start-stop impact and high-frequency vibration) is ensured, and safety failure caused by the sheath is avoided.

Inventors

  • LIANG WEI
  • ZHU HONGWEI
  • JIANG CHAO

Assignees

  • 扬州电力机具厂有限公司

Dates

Publication Date
20260508
Application Date
20250520

Claims (7)

  1. 1. The anti-torsion steel wire rope safety protection piece comprises a safety sheath (1) and an anti-torsion steel wire rope body (2) positioned in the safety sheath (1), and is characterized in that the safety sheath (1) comprises an inner sleeve (4) and an outer sleeve (5) which are coaxially nested; The inner sleeve (4) is sequentially provided with an inner layer (401), a middle layer (402) and an outer layer (403) from inside to outside, the outer side wall of the outer sleeve (5) is provided with a locking mechanism (3), and the locking mechanism (3) comprises: The limiting groove (501) is formed in the outer side wall of the outer sleeve (5), the depth of the limiting groove (501) is 2-3 mm, and the width of the limiting groove is 1.2 times of the diameter of the locking rope (6); The locking rope (6) is formed by twisting a plurality of stainless steel wires, and the surface of the locking rope is coated with a polyurethane anti-slip layer with the diameter of 4-6 mm; Two fixing plates (7) symmetrically arranged on two sides of the limiting groove (501), wherein the fixing plates (7) are fixed on the outer side of the outer sleeve (5) through welding; The locking rope comprises a rotating shaft (701), wherein two ends of the rotating shaft (701) are rotatably connected with two fixing plates (7) through bearings, one end of the rotating shaft extends to the outer side of each fixing plate (7) and is fixedly provided with a hand wheel (702), one end of the locking rope (6) is fixedly arranged on one fixing plate (7), and the other end of the locking rope is wound around and fixedly arranged on the rotating shaft (701).
  2. 2. The anti-torsion steel wire rope safety protection piece according to claim 1, wherein one side of the hand wheel (702) is provided with a bolt (8), the outer side wall of the hand wheel (702) is radially provided with a bolt hole, and the bolt (8) passes through the bolt hole and is inserted into a limit hole (703) formed in the outer side of the fixed plate (7), and the bolt (8) is in clearance fit with the limit hole (703), wherein the clearance is 0.1-0.3 mm; The end part of the bolt (8) is connected with a bolt (801) in a threaded mode, and the pretightening torque is 5-10 N.m.
  3. 3. The anti-torsion steel wire rope safety protection piece according to claim 1, wherein an elastic metal gasket (502) is fixedly arranged on the inner side wall of the limiting groove (501), and the locking rope (6) is positioned on the outer wall of the metal gasket (502).
  4. 4. The anti-torsion steel wire rope safety protection piece according to claim 1, wherein the inner layer (401) is a spring steel wavy ring, the crest height of the spring steel wavy ring is 3-5mm, and the wavelength of the spring steel wavy ring is 10-15 mm.
  5. 5. The anti-torsion steel wire rope safety protection piece according to claim 1, wherein the middle layer (402) is a polyurethane buffer layer, and the Shore hardness is 80-90A.
  6. 6. The anti-torsion steel wire rope safety protection piece according to claim 1, wherein the outer layer (403) is an aramid fiber woven sleeve, and the weaving density is 12 multiplied by 12 to 16 multiplied by 16 per cm 2 .
  7. 7. The anti-torsion steel wire rope safety protection piece according to claim 1, wherein V-shaped anti-skidding lines are arranged on the surface of the polyurethane anti-skidding layer of the locking rope (6), the line depth is 0.5-1 mm, and the line distance is 2-3 mm.

Description

Anti-torsion steel wire rope safety protection piece Technical Field The utility model relates to the technical field of anti-torsion steel wire ropes, and particularly discloses an anti-torsion steel wire rope safety protection piece. Background The anti-torsion steel wire rope safety protection piece (sleeve) is a device for protecting and reinforcing a steel wire rope, aims to prolong the service life of the steel wire rope and improve the safety, is a steel wire rope reinforcing device, can effectively reinforce the service life of the steel wire rope, has wide application, and is used for regularly checking the abrasion degree of a safety sheath in the use process, if the abrasion or damage is found, the safety sheath is replaced in time so as to keep the protection function, and the steel wire rope safety sheath is selected, installed and maintained strictly according to relevant standards and guidelines so as to improve the service life of the steel wire rope and ensure the safety of a workplace. Chinese patent No. CN220977521U discloses a wire rope safety guard, including safety guard, wire rope, offered the perforation on the safety guard, be provided with the sheet metal piece on the perforation, be provided with fastening assembly on the sheet metal piece, be provided with the nut on the fastening assembly, fastening assembly outer end is provided with the arc end, is provided with between safety guard inner wall and the outside and strengthens the intermediate layer, strengthens the intermediate layer and includes polyamide fiber, carbon fiber. According to the utility model, through arranging the perforation, the metal plate, the fastening component, the nut and the arc-shaped end, the safety protection piece is sleeved on the corresponding steel wire rope and the nut is screwed, the fastening component is pulled in the process that the nut is screwed to move towards the metal plate, so that the fastening component in the safety protection piece is tensioned, the steel wire rope in the safety protection piece is locked, a good fastening effect is achieved, the installation stability of the safety protection piece can be further improved, the steel wire rope is prevented from being deviated due to larger force in the use process, and the use effect is ensured . In the using process, only the mode of screwing the nut is adopted, the nut is easy to loosen in the vibration environment, and the protection piece and the steel wire rope slide relatively. Disclosure of utility model The utility model provides an anti-torsion steel wire rope safety protection piece, which ensures that the locking force is stable for a long time under dynamic load (such as start-stop impact and high-frequency vibration) through double looseness prevention by combining mechanical stop and thread pre-tightening, and avoids safety failure caused by loosening of a sheath. The utility model discloses an anti-torsion steel wire rope safety protection piece, which comprises a safety sheath and an anti-torsion steel wire rope body positioned in the safety sheath, wherein the safety sheath comprises an inner sleeve and an outer sleeve which are coaxially nested; The inner sleeve is sequentially provided with an inner layer, a middle layer and an outer layer from inside to outside, the outer side wall of the outer sleeve is provided with a locking mechanism, and the locking mechanism comprises: The limiting groove is formed in the outer side wall of the outer sleeve, the depth of the limiting groove is 2-3 mm, and the width of the limiting groove is 1.2 times of the diameter of the locking rope; The locking rope is formed by twisting a plurality of stainless steel wires, and the surface of the locking rope is coated with a polyurethane anti-slip layer with the diameter of 4-6 mm; the two fixing plates are symmetrically arranged on two sides of the limit groove 1 and are fixed on the outer side of the outer sleeve through welding; The two ends of the rotating shaft are rotatably connected with the two fixing plates through bearings, one end of the rotating shaft extends to the outer sides of the fixing plates and fixes the hand wheel, one end of the locking rope is fixed on one of the fixing plates, and the other end of the locking rope is wound and fixed on the rotating shaft. As the anti-torsion steel wire rope safety protection piece, preferably, a bolt is arranged on one side of the hand wheel, a bolt hole is formed in the outer side wall of the hand wheel in the radial direction, the bolt penetrates through the bolt hole and is inserted into a limit hole formed in the outer side of the fixing plate, and the bolt is in clearance fit with the limit hole, wherein the clearance is 0.1-0.3 mm. The end part of the bolt 8 is connected with a bolt 801 in a threaded manner, and the pretightening torque is 5-10N.m. As the anti-torsion steel wire rope safety protection piece, preferably, the inner side wall of the limiting groove is fixe