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CN-121974216-A - Wire breakage safety detection device for wire rope of mine hoist

CN121974216ACN 121974216 ACN121974216 ACN 121974216ACN-121974216-A

Abstract

The invention relates to the technical field of mine safety, and provides a wire breakage safety detection device for a steel wire rope of a mine hoist, which comprises a positioning frame, two support arm plates arranged on the left side and the right side of the upper part of the front end of the positioning frame and a detection cylinder fixed at the front end of the support arm plates, wherein the detection cylinder is coaxially sleeved outside the lifted steel wire rope, a magnetic insulation temperature control assembly is arranged in the detection cylinder, a heat discharge path assembly is arranged on the magnetic insulation temperature control assembly, the magnetic insulation temperature control assembly comprises an isolation ring frame coaxially fixed in the detection cylinder and a layering ring coaxially connected with the middle part of the isolation ring frame, hall sensor pieces are respectively arranged on the upper side and the lower side of the outer ring wall of the isolation ring frame along the axial direction of the isolation ring frame, and a heat insulation lining is laid on the outer ring wall of the isolation ring frame. When the invention is used, the environment stability of the detection core region Wen Cihuan is maintained through the cooperation of the magnetic insulation temperature control component and the heat discharge component, and the accuracy and the reliability of continuous acquisition of the wire breakage magnetic leakage signal are ensured.

Inventors

  • JIANG SHUWEI
  • SONG CHENGYU
  • WANG SHUNDE
  • SONG XUEFENG
  • LI XIAOMING
  • MENG LINGGUANG

Assignees

  • 龙口市名丰机械配件有限公司

Dates

Publication Date
20260505
Application Date
20260304

Claims (9)

  1. 1. The wire breakage safety detection device for the wire rope of the mine hoist comprises a locating frame (1), two support arm plates (2) arranged on the left side and the right side of the upper part of the front end of the locating frame (1) and a detection cylinder (3) fixed at the front end of the support arm plates (2), wherein the detection cylinder (3) is coaxially sleeved outside a wire rope (4) which is lifted and moved, and is characterized in that: A magnetic insulation temperature control assembly (5) is arranged in the detection cylinder (3), and a heat discharge assembly (6) is arranged on the magnetic insulation temperature control assembly (5); The magnetism-preserving temperature control assembly (5) comprises: the device comprises an isolation ring frame (51) coaxially fixed in a detection cylinder (3) and a layering ring (52) coaxially connected to the middle part of the isolation ring frame (51), wherein Hall sensing pieces (53) are arranged on the upper side and the lower side of the outer annular wall of the isolation ring frame (51) along the axial direction of the isolation ring frame, and a heat insulation lining (54) is laid on the outer annular wall of the isolation ring frame (51); when the lifted steel wire rope (4) continuously passes through the middle and lower area of the detection cylinder (3) to generate local heat accumulation, the heat insulation lining (54) blocks heat transfer to stabilize the working environment of the Hall sensor (53).
  2. 2. The mine hoist wire rope breakage safety detection device according to claim 1, characterized in that the detection cylinder (3) consists of two symmetrically arranged semi-ring cylinders (31), one end surfaces of the two semi-ring cylinders (31) are rotationally connected through a hinge (32), and the other end surfaces of the two semi-ring cylinders (31) are closed and locked through a lock catch (33); the top and bottom ends of the semi-ring cylinders (31) are fixedly provided with adjustable guide wheel pieces (34); The middle part of the inner side of the semi-ring barrel (31) is provided with a containing cavity (311), and the upper side and the lower side of the containing cavity (311) of the semi-ring barrel (31) are respectively provided with a coil cavity (312); the isolating ring frame (51) is arranged in the accommodating cavity (311).
  3. 3. The mine hoist wire rope breakage safety detection device according to claim 2, wherein an excitation coil (56) is installed in the coil cavity (312) at the lower part, a weak magnetic coil (57) is installed in the coil cavity (312) at the upper part, and heat insulation layers are laid on the inner walls of the coil cavity (312).
  4. 4. The mine hoist wire rope breakage safety inspection device of claim 1, characterized in that the heat routing assembly (6) includes a heat drain (61) and a heat resistant liner (62): a plurality of heat discharging cylinders (61) are embedded in the annular array in the layered ring (52); The two ends of the heat discharging tube (61) respectively penetrate through the inner wall and the outer wall of the semi-ring tube (31), and the inner surface of the heat discharging tube (61) is coated with a heat-resistant lining (62).
  5. 5. The mine hoist wire rope breakage safety detection device according to claim 4, wherein the inner and outer ports of the heat exhaust barrel (61) are a heat inlet (611) and a heat outlet (612) respectively, and the heat inlet (611) and the heat outlet (612) are both obliquely arranged.
  6. 6. The mine hoist wire rope breakage safety detection device according to claim 4, characterized in that a thermal induction gathering and arranging assembly (7) for exhausting heat accumulated in the detection cylinder (3) is arranged in the thermal exhaust cylinder (61), and the thermal induction gathering and arranging assembly (7) comprises a hollow ring (71) and a plugging ring block (72): Hollow rings (71) are arranged in the heat exhaust barrels (61), and a plugging ring block (72) is arranged at one outward end of each hollow ring (71); The rear end of the hollow ring (71) is provided with a plurality of weak spring columns (73) in an equidistant annular sliding manner, and the rear end of each weak spring column (73) is fixedly connected with the inward end face of the plugging ring block (72); An inward end surface of the hollow ring (71) is provided with a metal expansion sheet (74) which is annularly arranged, and the metal expansion sheet (74) is fixedly connected with the front end of the corresponding weak spring column (73); When the metal expansion sheet (74) is heated and deformed concavely, the weak spring column (73) is driven to displace so as to open the plugging ring block (72) for heat removal.
  7. 7. The mine hoist wire rope breakage safety detection device according to claim 5, characterized in that a guiding inclined ring (35) is installed at the lower part of the inner wall of the detection cylinder (3), and the highest point of the guiding inclined ring (35) extends to the lowest part of a heat inlet (611) of the heat exhaust cylinder (61).
  8. 8. A wire breakage safety inspection device for a wire rope of a mine hoist as claimed in claim 3, characterized in that the top end and the bottom end of the isolating ring frame (51) are provided with isolating magnetic plates (55) for shielding radial magnetic interference of magnetic fields generated by the exciting coil (56) and the weak magnetic coil (57) on the hall sensor (53).
  9. 9. The mine hoist wire rope breakage safety detection device according to claim 1, characterized in that an assembly frame (101) is mounted on the left side and the right side of the front end lower portion of the positioning frame (1), and a detachable auxiliary excitation ring (102) is mounted on the assembly frame (101) and used for forming a double excitation structure with an excitation coil (56) in the detection cylinder (3).

Description

Wire breakage safety detection device for wire rope of mine hoist Technical Field The invention relates to the technical field of mine safety, in particular to a wire breakage safety detection device for a wire rope of a mine hoist. Background The mine hoist is the core transportation equipment of mine production, bears the vertical lifting task of personnel, ore, material and equipment, is honored as mine "throat", and the operation safety directly relates to normal production of mine and personnel life safety, and is one of key links of safe production. The steel wire rope of the elevator is the only bearing part for connecting the hoisting container and the driving mechanism, is subjected to alternating load, bending and friction for a long time, is easy to generate fatigue, abrasion, broken wires and other damages, is a fundamental safety measure for preventing rope breakage accidents, is a main stream of current nondestructive testing technology based on a magnetic leakage principle, enables the steel wire rope to reach a magnetic saturation state through excitation, and realizes nondestructive online detection of broken wires by detecting leakage magnetic fields at broken wires through a Hall sensor array arranged in a surrounding manner. However, in actual mine working conditions, the mine depth reaches hundreds to thousands of meters, the underground surrounding rock is subjected to constant and high temperature, the ground temperature fluctuates severely along with seasons and day and night, the temperature difference between the underground surrounding rock and the ground temperature often reaches tens of degrees celsius, the steel wire rope is lifted reciprocally in the extreme temperature difference interval at high speed (usually more than 10 meters/second), the surface of the rope body and the air form strong forced convection heat exchange, severe and large temperature abrupt changes are generated on the surface in a short time, the inside and the surface of the rope body do not reach heat balance, a continuous internal heat state is formed, after the steel wire rope in the internal heat state continuously passes through the cylindrical magnetic detection device at the tail end of the winding after being transported temporarily, the fit clearance between the device and the steel wire rope is narrow and is in a semi-closed structure, the internal air circulation performance is extremely poor, the residual heat of the temperature change carried by the rope body is overlapped with the contact and bending friction heat generated by the guide component before winding, the steel wire rope is continuously accumulated in the clearance, the abrupt change occurs, the stable detection magnetic field environment is difficult to be formed, the magnetic field thermal attenuation of the permanent magnet assembly is also difficult to be caused by heat conduction and the heat radiation device, the whole detection system is difficult to be damaged, the whole trend of the detection system is difficult to be accurately estimated, the trend of the detection and the whole trend is difficult to be accurately maintained, and the trend is difficult to be accurately predicted, and the trend is difficult to be detected and is difficult to be supported by the detection based on the whole system. Therefore, the application provides a wire breakage safety detection device for a wire rope of a mine hoist to solve the problems. Disclosure of Invention Aiming at the problems in the prior art, the invention aims to provide the wire breakage safety detection device for the wire rope of the mine hoist, which solves the problems that when the wire rope lifted at high speed passes through the cylindrical magnetic detection device at the tail end of winding under the working condition of the temperature difference of the mine, the magnetic detection precision is invalid due to heat accumulation in a gap, the damage of the wire rope cannot be accurately judged, and the long-term safety evaluation can not be carried out. The technical scheme is that the mine hoist steel wire rope breakage safety detection device comprises a positioning frame, two support arm plates arranged on the left side and the right side of the upper portion of the front end of the positioning frame and a detection cylinder fixed to the front end of the support arm plates, wherein the detection cylinder is coaxially sleeved outside a lifted steel wire rope, a magnetic insulation temperature control assembly is arranged in the detection cylinder, a heat exhaust path assembly is arranged on the magnetic insulation temperature control assembly, the magnetic insulation temperature control assembly comprises an isolation ring frame coaxially fixed in the detection cylinder and a layering ring coaxially connected to the middle portion of the isolation ring frame, hall sensing pieces are arranged on the upper side and the lower side of the outer ring wall of the isola