Crane steel wire rope groove disengaging fault detection and protection device and method

Abstract

The invention discloses a crane steel wire rope groove disengaging fault detection protection device and method, and relates to the technical field of cranes. The crane comprises a crane arm arranged on a crane main body, a steel wire rope is arranged between the crane main body and the crane arm, the detection unit comprises a protection assembly and a trigger assembly, and a contact extrusion wheel used for carrying out groove disengaging protection on the steel wire rope is arranged in the protection assembly; a driving shaft matched with the steel wire rope is arranged in the triggering assembly; the locking unit comprises a synchronizing assembly and a clamping and locking assembly. The device has the advantages that by adopting the mode of limiting the two ends of the hoisting fixed pulley and limiting the middle of the steel wire rope, the steel wire rope can be effectively prevented from disengaging from a groove, normal take-up and pay-off of the steel wire rope cannot be affected, and the running state of the steel wire rope can be monitored in real time; and when abnormal conditions such as wire breakage are detected, the steel wire rope can be quickly locked and stopped, so that the operation safety of the crane is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and in particular to a crane wire rope groove derailment fault detection and protection device and method. Background Art

[0002] Cranes refer to mechanical equipment that realizes material lifting through the cooperation of traction machines, hooks, slings and other tools. Existing cranes are usually equipped with groove-out protection devices to protect the wire ropes, avoid problems such as groove-out and wire breakage during operation, and improve the safety of crane operation; Existing groove debonding protection devices adopt a variety of methods to achieve the groove debonding protection of the crane wire rope. For example, a crane wire rope debonding protection device with publication number CN220618201U includes a fixed pulley, an outer protective plate, a pulley fixing plate, a wire rope, a pulley limit block, a groove debonding prevention device, and a pulley shaft. The fixed pulley is correspondingly arranged to the pulley shaft, the fixed pulley is correspondingly arranged to the wire rope, the fixed pulley is correspondingly arranged to the two pulley limit blocks, the pulley shaft is correspondingly installed to the pulley limit blocks, the pulley shaft is correspondingly installed to the outer protective plate, the outer protective plate is correspondingly installed to the groove debonding prevention device, and the outer protective plate is correspondingly installed to the pulley fixing plate.

[0003] Existing groove-out protection devices usually use an extrusion method to squeeze and limit the wire rope, so as to limit the position of the wire rope by extrusion to prevent it from slipping out of the groove. Although this protection method can prevent the wire rope from slipping out of the groove to a certain extent, squeezing the wire rope will limit its movement, increasing the resistance of the wire rope to unwinding and rewinding when the crane is running. For example, the above-mentioned referenced prior art squeezes and limits the wire rope by squeezing the anti-slip roller, and the squeezing force of the anti-slip roller cannot be adjusted, so that the wire rope will always be subjected to a downward squeezing force, which will seriously affect the normal traction of the wire rope. At the same time, the device cannot detect and protect the wire rope from breaking or anti-falling faults, and cannot achieve effective safety protection of the wire rope. Therefore, it is urgent to design a crane wire rope out of groove fault detection and protection device and method to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a crane wire rope de-slot fault detection and protection device and method, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A crane wire rope de-slot fault detection and protection device, comprising a crane arm arranged on a crane body, and a wire rope is arranged between the crane body and the crane arm, characterized in that it also includes: The detection unit is arranged on the crane arm and is used to realize the de-groove protection and wire break detection trigger of the wire rope. A lifting fixed pulley matched with the wire rope is arranged in the detection unit. The detection unit includes a protection component and a trigger component. The protection component is provided with a contact extrusion wheel for protecting the wire rope from de-groove. The trigger component is provided with an active shaft matched with the wire rope, and the wire break detection and triggering of the wire rope are realized through the active shaft. The locking unit is arranged on the detection unit and is used to realize wire rope break protection, and includes a synchronization component and a locking component, wherein the synchronization component is provided with a driven roller that cooperates with the driving shaft and is used to trigger the locking component, and the locking component is provided with multiple positioning arc clamps. The multiple positioning arc clamps move under the triggering of the driven roller to realize wire rope break protection.

[0006] Preferably, the protection assembly comprises a protection box fixedly mounted on the crane arm, and the lifting fixed pulley is rotatably mounted in the protection box, a fixing frame is fixedly mounted in the protection box, and a moving mechanism is mounted in the fixing frame.

[0007] Preferably, the moving mechanism comprises two hydraulic push rods fixedly mounted on a fixed frame, two lifting plates are slidably mounted in the fixed frame, and the driving ends of the two hydraulic push rods are respectively fixedly mounted on the two lifting plates, a driving shaft is rotatably mounted between the two lifting plates, and a vertical slot for lifting the driving shaft is opened on the protective box; Two side limiting wheels are fixedly mounted on the driving shaft, and the two side limiting wheels respectively cooperate with the two side edges of the lifting fixed pulley. A contact extrusion wheel that cooperates with the wire rope is fixedly mounted on the driving shaft, and the contact extrusion wheel is located between the two side limiting wheels.

[0008] Preferably, the trigger assembly includes a tachometer disposed on the lifting plate, and the tachometer cooperates with the driving shaft to measure the rotational speed of the driving shaft. A controller is disposed in the protective box, and the tachometer and two hydraulic push rods cooperate with the controller.

[0009] Preferably, the synchronization component includes a mounting frame fixedly mounted on the outside of the protective box, and a protective cylinder is fixedly mounted on the mounting frame, and the wire rope is located in the protective cylinder, two lifting slide bars are vertically slidably mounted in the protective cylinder, and a lifting inner cylinder is fixedly mounted between the two lifting slide bars, and a linkage mechanism is installed on the lifting inner cylinder.

[0010] Preferably, the linkage mechanism includes a driven roller rotatably mounted on a lifting inner cylinder, and a lifting opening for vertically lifting the driven roller is opened in the protective cylinder, a linkage frame is rotatably mounted on the driving shaft, and the driven roller is rotatably connected to the lower part of the linkage frame, and a transmission belt is sleeved between the driving shaft and the driven roller.

[0011] Preferably, the locking assembly includes a trigger box fixedly installed in the lifting inner cylinder, and a driving roller is rotatably installed between the trigger box and the driven roller, a transmission gear is installed on the driving roller through a centrifugal mechanism, a lifting and lowering pressure plate is slidably installed in the trigger box, and the trigger box is filled with hydraulic oil at the lower part of the lifting and lowering pressure plate, a lifting gear rod meshing with the transmission gear is fixedly installed on the lifting and lowering pressure plate, and a locking mechanism is installed between the trigger box and the lifting inner cylinder.

[0012] Preferably, the centrifugal mechanism includes a trigger wheel sleeved on a driving roller, and a transmission gear is fixedly mounted on the outside of the trigger wheel, an internal ring is fixedly mounted inside the trigger wheel, a fixed ring is fixedly mounted on the driving roller, and the fixed ring is located inside the trigger wheel, a plurality of positioning card plates are fixedly mounted on the fixed ring via a plurality of elastic telescopic rods, and a plurality of positioning card slots matching the positioning card plates are provided on the internal ring.

[0013] Preferably, the locking mechanism comprises a plurality of storage rings, and each storage ring is fixedly mounted inside the lifting inner cylinder through a plurality of positioning blocks, a guide tube for conducting hydraulic oil is commonly connected between the plurality of storage rings and the trigger box, and each storage ring is filled with hydraulic oil; Each of the storage rings is fixedly connected with a plurality of connecting boxes for conducting hydraulic oil, and a piston plate is slidably installed in each connecting box. A positioning arc clamp is slidably installed between each piston plate and the corresponding connecting box, and the plurality of positioning arc clamps cooperate to extrude and position the wire rope.

[0014] A crane wire rope out-of-groove fault detection and protection method, used for the above-mentioned crane wire rope out-of-groove fault detection and protection device, comprises the following steps: S1. When the crane is in operation, the lifting fixed pulley is protected from slipping out of the groove by the protection component in the detection unit to prevent the wire rope from slipping out of the groove; S2, detect and protect the wire rope from breaking by triggering the component; S3, realizing automatic start triggering of the locking component through the cooperation of the trigger component and the synchronization component in the locking unit; S4. Start the multiple positioning arc clamps through the locking assembly, and realize the locking position of the wire rope with the cooperation of the multiple positioning arc clamps.

[0015] The present invention provides a crane wire rope de-slot fault detection and protection device and method. It has the following beneficial effects: 1. When the groove-out fault detection and protection device is protecting the wire rope, the position of the side limiting wheel can be adjusted through the cooperation of the hydraulic push rod and the side limiting wheel, and the two sides of the lifting fixed pulley on the crane body can be limited and protected at the same time, which can prevent the wire rope from slipping out of the two sides of the lifting fixed pulley and limit the position of the side limiting wheel so that it will not deviate, which can effectively prevent the wire rope from getting out of the groove.

[0016] 2. When the groove-out fault detection and protection device is used to protect the wire rope, the height position of the contact extrusion wheel can be flexibly adjusted through the cooperation of the hydraulic push rod, so that it fits the wire rope to achieve its position limitation, further preventing the wire rope from getting out of the groove, and the extrusion force of the contact extrusion wheel can be flexibly adjusted, which will not cause a large resistance to the wire rope when retracting and releasing, and the protection effect is better.

[0017] 3. When protecting the wire rope, the present slot disengagement fault detection and protection device can monitor the wire rope retraction and release speed in real time, and when it detects that the wire rope retraction and release speed increases abnormally, it automatically starts the locking component through the cooperation of the trigger component and the synchronization component, thereby monitoring the abnormal state of the wire rope in real time.

[0018] 4. When the out-of-groove fault detection and protection device is protecting the wire rope, when the wire rope is broken or the wire rope is retracted and released at an abnormally accelerated speed due to the fall of heavy objects, the multiple arc-shaped positioning clamps can be automatically triggered through the cooperation of the locking components, so that the wire rope can be tightly and stably clamped and locked, that is, the wire rope is automatically locked and stopped, making it impossible to continue to retract and release the wire rope, thereby reducing the risk of the wire rope and improving the overall safety.

[0019] To sum up, the present invention can effectively prevent the wire rope from getting out of the groove by limiting the two ends of the lifting fixed pulley and limiting the middle of the wire rope, and will not affect the normal retraction and release of the wire rope. The running status of the wire rope can be monitored in real time. When abnormal conditions such as wire breakage are detected, the wire rope can be quickly locked and stopped, thereby effectively improving the operating safety of the crane.

[0020] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein: Figure 1 This is a structural schematic diagram of a crane wire rope de-slot fault detection and protection device proposed by the present invention; Figure 2for Figure 1 Schematic diagram of the structure after rotating a certain angle; Figure 3 for Figure 1 Schematic diagram of the structure of the middle protection box and the protection tube; Figure 4 for Figure 3 Schematic diagram of the internal structure of the middle protection box; Figure 5 for Figure 4 Schematic diagram of the upper structure of the middle fixed frame; Figure 6 for Figure 5 Schematic diagram of structural decomposition; Figure 7 for Figure 6 Schematic diagram of the structure of the central driving shaft and two lifting plates; Figure 8 for Figure 3 Schematic diagram of the structure of the middle protective cylinder and the driving shaft; Fig. 9 for Figure 8 Schematic diagram of the upper structure of the middle protective tube; Fig.10 for Fig. 9 Schematic diagram of structural decomposition; Fig.11 for Fig.10 Schematic diagram of the internal structure of the middle protective tube; Fig.12 for Fig.11 Schematic diagram of the internal structure of the middle lifting inner cylinder; Fig.13 for Fig.12 Schematic diagram of the structure after removing the lifting inner cylinder; Fig.14 for Fig.13 Schematic diagram of the internal structure of the trigger box; Fig.15 for Fig.14 Schematic diagram of the structure of the middle driving roller and the trigger wheel; Fig.16 for Fig.15 Schematic diagram of the internal structure of the trigger wheel; Fig.17 for Fig.16 A front view of Fig.18 for Fig.13 Schematic diagram of the internal structure of the storage ring.

[0022] In the figure: 1 crane body, 2 crane arm, 3 wire rope, 4 protection box, 5 protection cylinder, 6 driving shaft, 7 lifting fixed pulley, 8 fixed frame, 9 lifting plate, 10 hydraulic push rod, 11 side limit wheel, 12 contact extrusion wheel, 13 mounting frame, 14 driven roller, 15 linkage frame, 16 transmission belt, 17 lifting inner cylinder, 18 lifting slide bar, 19 trigger box, 20 storage ring, 21 positioning block, 22 liquid guide tube, 23 positioning arc clamp, 24 lifting gear rod, 25 driving roller, 26 trigger wheel, 27 lifting plate, 28 transmission gear, 29 positioning card plate, 30 positioning card slot, 31 elastic telescopic rod, 32 fixed ring, 33 built-in ring, 34 annular groove, 35 connecting box, 36 piston plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Example 1: Reference Figure 1-Figure 4 A crane wire rope de-slot fault detection and protection device includes a crane arm 2 arranged on a crane body 1, and a wire rope 3 is arranged between the crane body 1 and the crane arm 2, and a hanging hook is arranged at the lower part of the wire rope 3. The crane body 1 drives the hanging hook to move up and down to realize the material lifting work, and when the hanging hook moves up and down, the wire rope 3 will be synchronously reeled in or released.

[0025] The slot-out fault detection and protection device also includes: The detection unit is arranged on the crane arm 2, and is used to realize the groove derailment protection and wire breakage detection triggering of the wire rope 3. A lifting fixed pulley 7 matched with the wire rope 3 is arranged therein. The wire rope 3 is limited by the lifting fixed pulley 7, so that the hanging hook at the lower part of the wire rope 3 remains in a vertical state. At the same time, the lifting fixed pulley 7 plays the role of guiding the wire rope 3, so that it maintains a constant winding and releasing.

[0026] The locking unit is arranged on the detection unit and is used to realize the wire rope 3 break protection. When the wire breaks or the heavy object falls off, the wire rope 3 will be quickly returned to the line at high speed from the taut state or the heavy object will pull the wire rope 3 to move rapidly downward. In the above two cases, the wire rope 3 will be pulled to move rapidly. At this time, the locking unit will quickly lock and stop the wire rope 3 so that it will not continue to move, thereby protecting the wire rope 3 and the crane body 1.

[0027] Example 2: Reference Figure 2-Figure 7The technical solution of this embodiment is different from that of the first embodiment in that the detection unit includes a protection component and a trigger component, wherein the protection component is provided with a contact extrusion wheel 12 for protecting the steel wire rope 3 from being de-grooved, and the trigger component is provided with an active shaft 6 matched with the steel wire rope 3, and the wire break detection and triggering of the steel wire rope 3 are realized through the active shaft 6; The protection assembly includes a protection box 4 fixedly mounted on the crane arm 2, and a lifting fixed pulley 7 is rotatably mounted in the protection box 4, and a fixing frame 8 is fixedly mounted in the protection box 4; A moving mechanism is installed in the fixed frame 8, and the moving mechanism includes two hydraulic push rods 10 fixedly installed on the fixed frame 8, two lifting plates 9 are slidably installed in the fixed frame 8, and the driving ends of the two hydraulic push rods 10 are respectively fixedly installed on the two lifting plates 9, and a driving shaft 6 is rotatably installed between the two lifting plates 9; A vertical slot for lifting the driving shaft 6 is provided on the protection box 4, and the vertical lifting of the driving shaft 6 will not be blocked by the vertical slot.

[0028] The hydraulic push rod 10 is started to drive the lifting plate 9 to move vertically in the fixed frame 8, that is, the hydraulic push rod 10 drives the lifting plate 9 and the driving shaft 6 thereon to move downward; Two side limiting wheels 11 are fixedly mounted on the driving shaft 6, and the two side limiting wheels 11 are respectively matched with the two side edges of the lifting fixed pulley 7, and a contact extrusion wheel 12 matched with the wire rope 3 is fixedly mounted on the driving shaft 6, and the contact extrusion wheel 12 is located between the two side limiting wheels 11; When the driving shaft 6 moves downward, it will drive the two side limiting wheels 11 and the contact extrusion wheel 12 in the middle to move downward. When the two side limiting wheels 11 move downward, the middle positions thereof will be respectively engaged with the convex parts on both sides of the lifting fixed pulley 7. The two side limiting wheels 11 cooperate with each other to horizontally limit the two sides of the lifting fixed pulley 7, which can not only limit the horizontal position of the lifting fixed pulley 7 so that it cannot slip horizontally, but also limit the wire rope 3 in the middle of the lifting fixed pulley 7 so that it can only slide on the roller groove in the middle of the lifting fixed pulley 7 and cannot get out of the groove. The contact extrusion wheel 12 will be pressed and fitted with the wire rope 3 when it moves downward, and the downward position of the contact extrusion wheel 12 is controlled by the hydraulic push rod 10 to control the extrusion force applied to the wire rope 3, so that the contact extrusion wheel 12 will not apply a large resistance to winding and releasing the wire rope 3. Even if the wire rope 3 can be wound and released normally, a certain extrusion force can also limit the wire rope 3, further preventing the wire rope 3 from slipping out of the groove.

[0029] In a further embodiment, the trigger assembly includes a speed meter disposed on the lifting plate 9, the speed meter cooperates with the driving shaft 6 to measure the rotational speed of the driving shaft 6, a controller is disposed in the protection box 4, and the speed meter and the two hydraulic push rods 10 cooperate with the controller; When the steel wire rope 3 contacts the contact extrusion wheel 12, the steel wire rope 3 will drive the contact extrusion wheel 12 to rotate synchronously due to the friction force during the process of winding and releasing the wire rope, that is, the rotation speed of the contact extrusion wheel 12 is positively correlated with the winding and releasing speed of the steel wire rope 3; When the steel wire rope 3 is operating normally, the rotation speed of the contact extrusion wheel 12 is relatively slow. When the wire is broken or a heavy object falls off, and the steel wire rope 3 fails to release or reel in the wire at high speed, the steel wire rope 3 moves at high speed and drives the contact extrusion wheel 12 to rotate at high speed. When the contact extrusion wheel 12 rotates, it will drive the driving shaft 6 to rotate. The speed meter is used to detect the rotation speed of the driving shaft 6. When it is detected that the rotation speed of the driving shaft 6 is too fast, it means that the wire rope 3 has a fault. At this time, the two hydraulic push rods 10 can be controlled by the controller to drive the contact extrusion wheel 12 to continue to move downward, so that the contact extrusion wheel 12 moves downward to apply a greater extrusion force to the wire rope 3, thereby increasing the friction resistance between the wire rope 3 and the contact extrusion wheel 12 and the lifting fixed pulley 7. The initial deceleration of the wire rope 3 is achieved through the greater friction resistance, thereby slowing down the retracting and releasing speed of the wire rope 3, thereby playing a better protective role.

[0030] Example 3: Reference Figure 1-Figure 4 as well as Figure 8-Figure 18 The technical solution of this embodiment is different from that of the second embodiment in that: the locking unit includes a synchronization component and a locking component, wherein the synchronization component is provided with a driven roller 14 that cooperates with the driving shaft 6 and is used to trigger the locking component, and the locking component is provided with a plurality of positioning arc clips 23, and the plurality of positioning arc clips 23 move under the triggering of the driven roller 14 to realize the wire break protection of the wire rope 3; The synchronization component includes a mounting frame 13 fixedly mounted on the outside of the protection box 4, and a protection tube 5 is fixedly mounted on the mounting frame 13, two lifting slide bars 18 are vertically slidably mounted in the protection tube 5, and a lifting inner tube 17 is fixedly mounted between the two lifting slide bars 18; The wire rope 3 is located inside the lifting inner cylinder 17 and the protective cylinder 5. The lifting inner cylinder 17 and the protective cylinder 5 cooperate to vertically limit the wire rope 3 so that it always remains in a vertical state inside the lifting inner cylinder 17 and the protective cylinder 5 without shaking, thereby improving the stability of the wire rope 3 in lifting materials.

[0031] A linkage mechanism is installed on the lifting inner cylinder 17, and the linkage mechanism includes a driven roller 14 rotatably installed on the lifting inner cylinder 17, and a lifting opening for the driven roller 14 to vertically lift is opened in the protective cylinder 5, a linkage frame 15 is rotatably installed on the driving shaft 6, and the driven roller 14 is rotatably connected to the lower part of the linkage frame 15, and a transmission belt 16 is sleeved between the driving shaft 6 and the driven roller 14; The linkage frame 15 serves to connect the driving shaft 6 and the driven roller 14, so that when the driving shaft 6 moves up and down, the driven roller 14 will be driven up and down through the linkage frame 15, and then the lifting inner cylinder 17 will be driven up and down, so that the lifting and lowering movement of the driving shaft 6 will not affect the lifting inner cylinder 17. At the same time, the linkage frame 15 and the driving shaft 6 and the driven roller 14 are all rotationally connected, so that the linkage frame 15 will not affect the normal rotation of the driving shaft 6 and the driven roller 14. When the driving shaft 6 rotates, it will drive the driven roller 14 to rotate through the cooperation of the transmission belt 16.

[0032] In a further embodiment, the locking assembly includes a trigger box 19 fixedly mounted in the lifting inner cylinder 17, and a driving roller 25 is rotatably mounted between the trigger box 19 and the driven roller 14, and a transmission gear 28 is mounted on the driving roller 25 through a centrifugal mechanism; When the wire rope 3 is normally retracted and released, it will drive the driving shaft 6 to rotate slowly. When the driving shaft 6 rotates slowly, it will drive the driven roller 14 to rotate slowly with the cooperation of the transmission belt 16. When the driven roller 14 rotates slowly, it will drive the driving roller 25 to rotate slowly. The centrifugal mechanism includes a trigger wheel 26 sleeved on the driving roller 25, and the trigger wheel 26 is rotatably connected to the driving roller 25, and a transmission gear 28 is fixedly installed on the outside of the trigger wheel 26, an internal ring 33 is fixedly installed in the trigger wheel 26, a fixed ring 32 is fixedly installed on the driving roller 25, and the fixed ring 32 is located in the trigger wheel 26, a plurality of positioning card plates 29 are fixedly installed on the fixed ring 32 through a plurality of elastic telescopic rods 31, and a plurality of positioning card slots 30 matching the positioning card plates 29 are opened on the internal ring 33; When the driving roller 25 rotates slowly, it will drive the fixed ring 32 to rotate slowly, and then drive the multiple positioning clamps 29 to rotate slowly through the multiple elastic telescopic rods 31. When the rotation speed of the multiple positioning clamps 29 is slow, their positions will not move, that is, the positioning clamps 29 will not be engaged into the positioning slots 30 in the built-in ring 33, that is, when the positioning clamps 29 rotate, it will not drive the built-in ring 33 to rotate, and thus will not drive the trigger wheel 26 to rotate, that is, when the wire rope 3 operates normally, the trigger wheel 26 will not rotate, that is, the transmission gear 28 will not rotate.

[0033] When the steel wire rope 3 has abnormal retraction and release, the steel wire rope 3 drives the active shaft 6 to rotate at high speed, that is, it drives the driven roller 14 to rotate at high speed through the transmission belt 16, and then drives the driving roller 25, the fixing ring 32, and the positioning card plate 29 to rotate at high speed. When the positioning card plate 29 rotates at high speed, it will generate a large centrifugal force, so that it will move centrifugally under the action of centrifugal force, and finally engage in the positioning card groove 30 in the built-in ring 33 during movement. At this time, when the driving roller 25 rotates, it will drive the fixing ring 32 to rotate, and drive the trigger wheel 26 to rotate through the cooperation of multiple elastic telescopic rods 31, multiple positioning card plates 29 and the built-in ring 33, so that the trigger wheel 26 can be automatically triggered when the steel wire rope 3 is broken. At this time, the trigger wheel 26 will rotate and drive the transmission gear 28 to rotate.

[0034] A lifting plate 27 is slidably installed in the trigger box 19, and the lower part of the lifting plate 27 in the trigger box 19 is filled with hydraulic oil. A lifting gear rod 24 meshing with a transmission gear 28 is fixedly installed on the lifting plate 27; When the transmission gear 28 rotates, it will drive the lifting gear rod 24 meshing therewith to move downward. When the lifting gear rod 24 moves downward, it will drive the lifting plate 27 below it to move downward, so as to squeeze the hydraulic oil below the lifting plate 27 and discharge it through the trigger box 19.

[0035] In a further embodiment, a locking mechanism is installed between the trigger box 19 and the lifting inner cylinder 17, and the locking mechanism includes a plurality of storage rings 20, and each storage ring 20 is fixedly installed inside the lifting inner cylinder 17 through a plurality of positioning blocks 21, and a guide tube 22 for conducting hydraulic oil is commonly connected between the plurality of storage rings 20 and the trigger box 19, and each storage ring 20 is filled with hydraulic oil; The hydraulic oil in the trigger box 19 will be pressed out through the liquid guide tube 22 and poured into the multiple storage rings 20. At this time, the hydraulic oil in the multiple storage rings 20 will increase synchronously, and the excess hydraulic oil will be pressed out. Each storage ring 20 is fixedly connected with a plurality of connecting boxes 35 for conducting hydraulic oil, and a piston plate 36 is slidably installed in each connecting box 35, and a positioning arc clamp 23 is slidably installed between each piston plate 36 and the corresponding connecting box 35, and the plurality of positioning arc clamps 23 cooperate to squeeze and position the steel wire rope 3; The excess hydraulic oil in the storage ring 20 will be pressed into the multiple connecting boxes 35. The increase of hydraulic oil in the connecting boxes 35 will push the piston plate 36 to move. The movement of the piston plate 36 will drive the positioning arc clamp 23 to move, so that the multiple positioning arc clamps 23 will eventually move and clamp on the side of the wire rope 3. The wire rope 3 can be squeezed and locked under the cooperation of the multiple positioning arc clamps 23, and the wire rope 3 is automatically stopped, so that it cannot continue to slide, thereby realizing automatic protection of the wire rope 3; A one-way valve is provided in the liquid conduit 22, so that the hydraulic oil therein can only flow in one direction without backflow, that is, the hydraulic oil entering the storage ring 20 through the liquid conduit 22 will not flow back, so that the moved positioning arc clamp 23 will not move after the wire rope 3 is stopped, thereby preventing the positioning arc clamp 23 from loosening and continuing to move after the wire rope 3 is stopped, and further improving the protection effect of the wire rope 3.

[0036] The specific working principle of this slot-out fault detection and protection device is: When the wire rope 3 is in normal operation, the hydraulic push rod 10 is started to drive the lifting plate 9 and the driving shaft 6 thereon to move downward. When the driving shaft 6 moves downward, the two side limiting wheels 11 and the contact extrusion wheel 12 thereon are driven to move downward. When the two side limiting wheels 11 move downward, the middle positions thereof will be respectively engaged with the protruding parts on both sides of the lifting fixed pulley 7. The two side limiting wheels 11 cooperate to horizontally limit the two sides of the lifting fixed pulley 7 so that it cannot slip horizontally, and can also limit the wire rope 3 in the middle of the lifting fixed pulley 7 so that it can only slide on the roller groove in the middle of the lifting fixed pulley 7 and cannot fall out of the groove. The contact extrusion wheel 12 will be pressed and fitted with the wire rope 3 when it moves downward, and the downward position of the contact extrusion wheel 12 is controlled by the hydraulic push rod 10 to control the extrusion force applied to the wire rope 3, so that the contact extrusion wheel 12 will not apply a large resistance to winding and releasing the wire rope 3. Even if the wire rope 3 can be wound and released normally, a certain extrusion force can also limit the wire rope 3, further preventing the wire rope 3 from slipping out of the groove.

[0037] When the steel wire rope 3 contacts the contact extrusion wheel 12, the steel wire rope 3 will drive the contact extrusion wheel 12 to rotate synchronously due to the friction force during the process of retracting and releasing the wire. When the steel wire rope 3 operates normally, the rotation speed of the contact extrusion wheel 12 is slow. When the steel wire rope 3 fails to release or retract the wire at high speed, the steel wire rope 3 moves at high speed and drives the contact extrusion wheel 12 to rotate at high speed. When the steel wire rope 3 is abnormally retracted and released, the steel wire rope 3 drives the driving shaft 6 to rotate at high speed, and drives the driven roller 14 to rotate at high speed through the transmission belt 16, and then drives the driving roller 25, the fixing ring 32, and the positioning card plate 29 to rotate at high speed. When the positioning card plate 29 rotates at high speed, it will move centrifugally under the action of centrifugal force and snap into the positioning card slot 30 in the built-in ring 33. At this time, when the driving roller 25 rotates, it will drive the fixing ring 32 to rotate, and drive the trigger wheel 26 to rotate through the cooperation of multiple elastic telescopic rods 31, multiple positioning card plates 29 and the built-in ring 33. The trigger wheel 26 can be automatically triggered when the steel wire rope 3 is broken. At this time, the trigger wheel 26 will rotate to drive the transmission gear 28 to rotate; The transmission gear 28 rotates to drive the lifting gear rod 24 meshing with it to move downward. The lifting gear rod 24 moves downward and drives the lifting and lowering pressure plate 27 below it to move downward, squeezing the hydraulic oil under the lifting and lowering pressure plate 27 so that it is pressed out through the liquid guide tube 22 and poured into multiple storage rings 20. The hydraulic oil in the multiple storage rings 20 increases synchronously, and then the excess hydraulic oil is pressed into the multiple connecting boxes 35. The increase of hydraulic oil in the connecting boxes 35 will push the piston plate 36 to move. The movement of the piston plate 36 drives the positioning arc clamp 23 to move, so that the multiple positioning arc clamps 23 are finally moved and clamped on the side of the wire rope 3. The wire rope 3 can be squeezed and locked under the cooperation of the multiple positioning arc clamps 23, and the wire rope 3 is automatically stopped, so that it cannot continue to slide, thereby realizing automatic protection of the wire rope 3.

[0038] The embodiment of the present invention further provides a crane wire rope out-of-groove fault detection and protection method, which is used in the above-mentioned crane wire rope out-of-groove fault detection and protection device, and comprises the following steps: S1. When the crane body 1 is in operation, the lifting fixed pulley 7 is protected from slipping out of the groove by the protection component in the detection unit to prevent the wire rope 3 from slipping out of the groove; S2, detecting and protecting the wire rope 3 from wire breakage by triggering the component; S3, realizing automatic start triggering of the locking component through the cooperation of the trigger component and the synchronization component in the locking unit; S4. Start the multiple positioning arc clamps 23 through the locking assembly, and achieve the locking position of the wire rope 3 with the cooperation of the multiple positioning arc clamps 23.

[0039] The above are only preferred specific implementation modes of the present invention, but 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 inventive 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 crane wire rope de-slot fault detection and protection device, comprising a crane arm (2) arranged on a crane body (1), and a steel wire rope (3) arranged between the crane body (1) and the crane arm (2), characterized in that: Also includes: A detection unit is arranged on the crane arm (2) and is used to implement groove derailment protection and wire break detection triggering of the steel wire rope (3), wherein a lifting fixed pulley (7) matching with the steel wire rope (3) is arranged therein, and the detection unit comprises a protection component and a trigger component, wherein a contact extrusion wheel (12) for protecting the steel wire rope (3) from groove derailment is arranged therein, and an active shaft (6) matching with the steel wire rope (3) is arranged therein, and wire break detection and triggering of the steel wire rope (3) are implemented through the active shaft (6); A locking unit is arranged on the detection unit and is used to achieve wire break protection for the steel wire rope (3), comprising a synchronization component and a locking component, wherein the synchronization component is provided with a driven roller (14) that cooperates with the driving shaft (6) and is used to trigger the locking component, and the locking component is provided with a plurality of positioning arc clamps (23), and the plurality of positioning arc clamps (23) move under the triggering of the driven roller (14) to achieve wire break protection for the steel wire rope (3).

2. A crane wire rope de-slot fault detection and protection device according to claim 1, characterized in that: The protection assembly comprises a protection box (4) fixedly mounted on the crane arm (2), and a lifting fixed pulley (7) rotatably mounted in the protection box (4), a fixing frame (8) fixedly mounted in the protection box (4), and a moving mechanism mounted in the fixing frame (8).

3. A crane wire rope de-slot fault detection and protection device according to claim 2, characterized in that: The moving mechanism comprises two hydraulic push rods (10) fixedly mounted on a fixed frame (8), two lifting plates (9) are slidably mounted in the fixed frame (8), and the driving ends of the two hydraulic push rods (10) are respectively fixedly mounted on the two lifting plates (9), a driving shaft (6) is rotatably mounted between the two lifting plates (9), and a vertical slot for lifting the driving shaft (6) is provided on the protective box (4); Two side limiting wheels (11) are fixedly mounted on the driving shaft (6), and the two side limiting wheels (11) respectively cooperate with the two side edges of the lifting fixed pulley (7). A contact extrusion wheel (12) that cooperates with the steel wire rope (3) is fixedly mounted on the driving shaft (6), and the contact extrusion wheel (12) is located between the two side limiting wheels (11).

4. A crane wire rope de-slot fault detection and protection device according to claim 3, characterized in that: The trigger assembly comprises a speed meter arranged on the lifting plate (9), wherein the speed meter cooperates with the driving shaft (6) to measure the rotational speed of the driving shaft (6), and a controller is arranged in the protection box (4), and the speed meter and two hydraulic push rods (10) cooperate with the controller.

5. A crane wire rope de-slot fault detection and protection device according to claim 3, characterized in that: The synchronization component comprises a mounting frame (13) fixedly mounted on the outside of the protection box (4), a protection tube (5) fixedly mounted on the mounting frame (13), and a steel wire rope (3) is located in the protection tube (5), two lifting slide bars (18) are vertically slidably mounted in the protection tube (5), and a lifting inner tube (17) is fixedly mounted between the two lifting slide bars (18), and a linkage mechanism is mounted on the lifting inner tube (17).

6. A crane wire rope de-slot fault detection and protection device according to claim 5, characterized in that: The linkage mechanism comprises a driven roller (14) rotatably mounted on a lifting inner cylinder (17), and a lifting opening for vertically lifting the driven roller (14) is provided in the protective cylinder (5), a linkage frame (15) is rotatably mounted on the driving shaft (6), and the driven roller (14) is rotatably connected to the lower part of the linkage frame (15), and a transmission belt (16) is sleeved between the driving shaft (6) and the driven roller (14).

7. A crane wire rope de-slot fault detection and protection device according to claim 6, characterized in that: The locking assembly comprises a trigger box (19) fixedly mounted in the lifting inner cylinder (17), a driving roller (25) rotatably mounted between the trigger box (19) and the driven roller (14), a transmission gear (28) being mounted on the driving roller (25) via a centrifugal mechanism, a lifting and lowering pressure plate (27) being slidably mounted in the trigger box (19), a lower portion of the lifting and lowering pressure plate (27) in the trigger box (19) being filled with hydraulic oil, a lifting gear rod (24) meshing with the transmission gear (28) being fixedly mounted on the lifting and lowering pressure plate (27), and a locking mechanism being mounted between the trigger box (19) and the lifting inner cylinder (17).

8. A crane wire rope de-slot fault detection and protection device according to claim 7, characterized in that: The centrifugal mechanism comprises a trigger wheel (26) sleeved on a driving roller (25), and a transmission gear (28) is fixedly mounted on the outside of the trigger wheel (26); an inner ring (33) is fixedly mounted inside the trigger wheel (26); a fixed ring (32) is fixedly mounted on the driving roller (25), and the fixed ring (32) is located inside the trigger wheel (26); a plurality of positioning clamping plates (29) are fixedly mounted on the fixing ring (32) via a plurality of elastic telescopic rods (31), and a plurality of positioning clamping grooves (30) matching the positioning clamping plates (29) are provided on the inner ring (33).

9. A crane wire rope de-slot fault detection and protection device according to claim 7, characterized in that: The locking mechanism comprises a plurality of storage rings (20), and each storage ring (20) is fixedly mounted inside the lifting inner cylinder (17) via a plurality of positioning blocks (21); a liquid guide tube (22) for conducting hydraulic oil is commonly connected between the plurality of storage rings (20) and the trigger box (19), and each storage ring (20) is filled with hydraulic oil; Each storage ring (20) is fixedly connected to a plurality of connecting boxes (35) for conducting hydraulic oil, and a piston plate (36) is slidably mounted in each connecting box (35). A positioning arc clamp (23) is slidably mounted between each piston plate (36) and the corresponding connecting box (35). The plurality of positioning arc clamps (23) cooperate to squeeze and position the steel wire rope (3).

10. A crane wire rope de-slot fault detection and protection method, used in the crane wire rope de-slot fault detection and protection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. When the crane body (1) is in operation, the lifting fixed pulley (7) is protected from slipping out of the groove by a protection component in the detection unit to prevent the steel wire rope (3) from slipping out of the groove; S2, detecting and protecting the wire rope (3) from wire breakage by means of a triggering component; S3, realizing automatic start triggering of the locking component through the cooperation of the trigger component and the synchronization component in the locking unit; S4, starting the plurality of positioning arc-shaped clamps (23) through the locking assembly, and achieving locking and positioning of the steel wire rope (3) with the cooperation of the plurality of positioning arc-shaped clamps (23).

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