A crane of a tower sling wire rope detection system

Abstract

The present invention belongs to the technical field of tower cranes, and particularly relates to a crane with a wire rope detection system for tower cranes. It includes a cockpit, a cross beam, a counterweight, a walking platform, and a wire rope. During use, when the second sensor detects a change in the magnetic field on the wire rope, the electric push rod is used to make the lower pressing area on the mounting frame and the upper pressing area on the sliding frame body press the wire rope tightly. The wire rope drives the detection module to move together. Moreover, in this state, the scrapers on the upper mounting slider and the lower mounting slider contact the wire rope, and the second sensor is close to the wire rope but does not contact it. The upper mounting slider and the lower mounting slider slide back and forth on the sliding frame and the mounting frame to scrape the debris on the wire rope back and forth. At the same time, the second sensor detects the wire rope back and forth to confirm whether the magnetic field of the wire rope changes. If there is indeed a change, the tower crane is controlled to stop working; if there is no abnormality in the magnetic field, the electric push rod is controlled to make the sliding frame body return to the initial state.

Description

Technical Field

[0001] The invention belongs to the technical field of tower cranes, and particularly relates to a crane with a wire rope detection system for tower cranes. Background Art

[0002] As a key component with huge consumption and high danger in lifting equipment, the fracture accident of wire ropes is an important problem that the industry has long failed to solve. Due to complex working conditions and high-load applications, various damages such as broken wires, wear, corrosion, and fatigue will occur to wire ropes. Without reliable safety monitoring means, the damages of wire ropes accumulate over time, transforming from quantitative change to qualitative change, and ultimately leading to wire rope fracture accidents.

[0003] The magnetic memory type AI weak magnetic detection technology realizes the innovation and breakthrough of replacing manual detection with machine intelligence for the whole life cycle safety monitoring of hoisting wire ropes, and promotes the wire rope safety monitoring to a higher level. Its scientific use has important significance in aspects such as safe production, energy conservation and consumption reduction, reduction of operation costs, improvement of equipment utilization rate, and increase of enterprise output value.

[0004] The sensors used in the CK.W magnetic memory type wire rope AI weak magnetic detection technology for measurement are relatively expensive. When actually used, they are arranged on the side close to the wire rope. When the wire rope is in use, it will tighten and jump, and there is a situation of hitting the sensors.

[0005] In addition, the working environment of tower cranes is outdoors at high altitude. The tower crane will swing under the influence of heavy objects and wind during operation, and the swing causes vibration, which affects the service life of the sensors.

[0006] Although the wire rope passes through the magnetic block, which is convenient for the CK.W magnetic memory type wire rope AI weak magnetic detection technology to identify, the wire rope is adhered to external magnetic substances during operation, which affects the magnetism of the wire rope and causes technical judgment errors.

[0007] The present invention aims to solve the above problems by improving the CK.W magnetic memory type wire rope AI weak magnetic detection technology. Summary of the Invention

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A crane with a wire rope detection system for tower cranes, which includes a cockpit, a cross beam, a counterweight, a walking platform, and a wire rope. A detection module is installed on the walking platform.

[0010] The detection module includes a first motor, a mounting frame, an L-shaped mounting plate, a first sensor, a telescopic slide plate, an electric push rod, a support plate, a limiting rod, a lower mounting slider, a second sensor, a sliding frame body, and an upper mounting slider. The mounting frame is slidably mounted on the upper side of the walking platform. One side of the mounting frame away from the cockpit has a U-shaped lower pressing area. A lower mounting slider is slidably mounted on one side of the mounting frame close to the cockpit, and a second sensor is mounted on the lower mounting slider. The first motor is fixedly mounted on one side of the walking platform close to the cockpit. The first motor can pull the mounting frame to slide towards the cockpit side through a winding wheel and a pulling rope. A third motor for driving the lower mounting slider to slide along the length direction of the cross beam is fixedly mounted on the outer side of the mounting frame.

[0011] Two electric push rods are mounted on the upper side of the mounting frame through a support plate. The lower sides of the telescopic ends of the two electric push rods are fixedly mounted with a sliding frame body. Two fourth springs are mounted between the sliding frame body and the two support plates. One side of the sliding frame body away from the cockpit has a U-shaped upper pressing area, which cooperates with the lower pressing area. An upper mounting slider is slidably mounted on one side of the sliding frame body close to the cockpit, and a second sensor is mounted on the upper mounting slider. The upper mounting slider and the lower mounting slider are connected by a telescopic connecting rod. A fifth spring is respectively mounted between the fixed ends of the two electric push rods and the corresponding support plates. The elastic strength of the fifth spring is less than that of the fourth spring. Two limiting rods for limiting the overall sliding of the two electric push rods relative to the support plate are slidably mounted on the upper sides of the two support plates.

[0012] An L-shaped mounting plate is fixedly mounted on one side of the mounting frame away from the cockpit, and a first sensor is fixedly mounted on the L-shaped mounting plate. The telescopic slide plate is fixedly mounted on the end face of one side of the mounting frame away from the cockpit. The distance between the telescopic end of the telescopic slide plate and the cockpit is greater than the distance between the first sensor and the cockpit. The telescopic end of the telescopic slide plate is in transmission connection with the two limiting rods. The telescopic slide plate is compressed and shortened, and the two limiting rods come into contact to limit the two electric push rods.

[0013] As a preferred solution, a winding wheel is fixedly mounted on the output shaft of the first motor, a pulling rope is wound on the winding wheel, and the outer end of the pulling rope is fixedly mounted on the mounting frame.

[0014] As a preferred solution, a trapezoidal chute is formed on the walking platform, a trapezoidal slider is fixedly mounted on the lower side of the mounting frame, and the mounting frame is mounted on the walking platform through the sliding fit of the trapezoidal slider and the trapezoidal chute.

[0015] A trigger plate cooperating with the telescopic slide plate is fixedly mounted on the walking platform.

[0016] As a preferred solution, a generator and a battery block are fixedly installed on one side of the mounting bracket close to the cockpit, and the battery block is electrically connected to the generator; a fixing plate is fixedly installed on the mounting bracket, a telescopic rod is fixedly installed on the fixing plate, a U-shaped bracket is fixedly installed on the lower side of the telescopic rod, and a first spring is installed between the U-shaped bracket and the fixing plate. The first spring is a compression spring; an upper friction wheel is rotatably installed on the U-shaped bracket, a lower friction wheel and a second gear are coaxially rotatably installed on the mounting bracket, and the lower friction wheel and the upper friction wheel are in frictional cooperation with the passing steel wire rope; a first gear is fixedly installed on the input shaft of the generator, and the first gear meshes with the second gear.

[0017] The battery block is electrically connected to the first motor.

[0018] As a preferred solution, a second spring is provided inside the telescopic slide plate. The second spring is a compression spring; a transmission plate is fixedly installed on the upper side of the telescopic end of the telescopic slide plate; the two limiting rods are respectively fixedly installed on the transmission plate through two connecting plates.

[0019] As a preferred solution, a third spring is installed between each of the two limiting rods and the corresponding support plate. The third spring is a compression spring.

[0020] A limiting groove for cooperating with the limiting rod is formed on the outer wall surface of the fixed end of the electric push rod.

[0021] As a preferred solution, a spring mounting plate for fixedly installing the fifth spring is fixedly installed at the fixed ends of the two electric push rods.

[0022] A second motor for providing power to the electric push rod is fixedly installed at the fixed ends of the two electric push rods.

[0023] As a preferred solution, a sliding groove is formed on one side of the mounting bracket. A transmission connecting plate is fixedly installed on one side of the lower mounting slider. A transmission rod is fixedly installed on the transmission connecting plate, and the transmission rod is in sliding cooperation with the sliding groove; a swing rod is fixedly installed on the output shaft of the third motor. A swing slide rail is fixedly installed on the transmission rod. One end of the swing rod has a sliding shaft, and the sliding shaft is slidably connected to the swing slide rail.

[0024] As a preferred solution, an L-shaped connecting slide plate is fixedly installed on the upper mounting slider. The upper end of the connecting rod is fixedly installed on the L-shaped connecting slide plate, and the lower end of the connecting rod is fixedly installed on the transmission connecting plate.

[0025] A steel wire inlet for putting the steel wire is formed on the mounting bracket.

[0026] As a preferred solution, elastic scraping plates are fixedly installed on both the upper mounting slider and the lower mounting slider.

[0027] Compared with the existing technology, the advantages of the present invention are as follows:

[0028] 1. During the movement of the steel wire rope in the present invention, the upper friction wheel and the lower friction wheel are driven to rotate through friction. The rotation of the lower friction wheel drives the second gear to rotate, the rotation of the second gear drives the first gear to rotate, the rotation of the first gear drives the input shaft of the generator to rotate, and the generator generates electricity. The generator transmits the electricity to be stored in the battery block. Since the first motor is fixedly installed on the walking platform and will be far away from the cockpit during use, it is not easy to supply power. The present invention realizes the power generation function through the designed upper friction wheel, lower friction wheel, generator, and battery block to supply power to the first motor.

[0029] 2. The first sensor is an optoelectronic sensor. When the mounting frame slides relative to the walking platform and the first sensor is about to touch the trigger plate, the telescopic slide plate will first contact the trigger plate, contact the limiting rod to limit the electric push rod, and at the same time, the first sensor transmits a signal to the first motor, so that the first motor drives the mounting frame to slide relative to the walking platform towards the side close to the cockpit through the winding wheel and the pulling rope.

[0030] 3. During use, when the second sensor detects a change in the magnetic field on the steel wire rope, it controls the sliding frame body to move downward through the electric push rod, so that the lower pressing area on the mounting frame and the upper pressing area on the sliding frame body press the steel wire rope tightly. The steel wire rope drives the detection module to move together. And in this state, the scraping plates on the upper mounting slider and the lower mounting slider contact the steel wire rope, and the second sensor is close to the steel wire rope but does not contact it; the upper mounting slider and the lower mounting slider slide back and forth on the sliding frame and the mounting frame. During the sliding process, the scraping plates on the upper mounting slider and the lower mounting slider play a role in reciprocally scraping the debris on the steel wire rope, and at the same time, the second sensor detects the steel wire rope reciprocally to confirm whether the magnetic field of the steel wire rope changes. If there is indeed a change, the tower crane is controlled to stop working; if the magnetic field is normal, the electric push rod is controlled to make the sliding frame body return to the initial state. Description of the Drawings

[0031] Figure 1 It is a schematic diagram of the overall component appearance.

[0032] Figure 2 It is a schematic diagram of the walking platform structure.

[0033] Figure 3 It is a schematic diagram of the detection module structure.

[0034] Figure 4 It is a schematic diagram of the pulling rope installation.

[0035] Figure 5 It is a schematic diagram of the generator installation.

[0036] Figure 6 It is a schematic diagram of the friction wheel installation.

[0037] Figure 7It is a schematic diagram of the installation of the drive plate.

[0038] Figure 8 It is a schematic diagram of the installation of the limit rod.

[0039] Figure 9 It is a schematic diagram of the cooperation between the limit rod and the limit groove.

[0040] Figure 10 It is a schematic diagram of the drive of the lower installation slider.

[0041] Figure 11 It is a schematic diagram of the cooperation between the transmission rod and the sliding groove.

[0042] Figure 12 It is a schematic diagram of the installation of the upper installation slider and the lower installation slider.

[0043] Figure 13 It is a schematic diagram of the structure of the mounting bracket.

[0044] Figure 14 It is a schematic diagram of the connection between the upper installation slider and the lower installation slider.

[0045] Figure 15 It is a schematic diagram of the installation of the upper installation slider.

[0046] Figure 16 It is a schematic diagram of the structure of the upper installation slider.

[0047] Names of the labels in the figure: 1. Cockpit; 2. Cross beam; 3. Counterweight; 4. Walking platform; 5. Steel wire rope; 6. First motor; 7. Detection module; 8. Trapezoidal chute; 9. Trigger plate; 11. Winding wheel; 12. Pulling rope; 13. Trapezoidal slider; 14. Mounting bracket; 15. Battery block; 16. Generator; 17. Lower friction wheel; 18. Upper friction wheel; 19. First gear; 20. Second gear; 21. U-shaped frame; 22. First spring; 23. Telescopic rod; 24. Fixed plate; 25. L-shaped mounting plate; 26. First sensor; 27. Telescopic slide plate; 28. Drive plate; 29. Electric push rod; 30. Support plate; 31. Second spring; 32. Connecting plate; 33. Limit rod; 34. Third spring; 35. Fourth spring; 36. Fifth spring; 37. Spring mounting plate; 38. Second motor; 39. Limit groove; 40. Third motor; 41. Swing slide rail; 42. Transmission rod; 43. Transmission connecting plate; 44. Lower installation slider; 45. Second sensor; 46. Sliding frame body; 47. Sliding groove; 48. Upper installation slider; 49. L-shaped connecting slide plate; 50. Connecting rod; 51. Lower pressing area; 52. Steel wire inlet; 53. Upper pressing area; 54. Scraper; 55. Swing rod; 56. Slide shaft. Specific implementation manners

[0048] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following embodiments or drawings are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0049] Unless otherwise clearly specified and defined, in the present invention, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific length, orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only for illustrative purposes and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood in combination with the accompanying drawings and according to specific circumstances.

[0050] Unless otherwise clearly specified and defined, in the present invention, if there are terms such as "set", "connected" and "connected", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] A detection trolley for the steel wire rope 5 of a tower crane, as Figure 1 shown, it includes a cockpit 1, a cross beam 2, a counterweight 3, a walking platform 4, and a steel wire rope 5, as Figure 2 shown, a detection module 7 is installed on the walking platform 4.

[0052] As Figure 3 、 5 shown, the detection module 7 includes a first motor 6, a mounting frame 14, an L-shaped mounting plate 25, a first sensor 26, a telescopic slide plate 27, an electric push rod 29, a support plate 30, a limiting rod 33, a lower mounting slider 44, a second sensor 45, a sliding frame body 46, and an upper mounting slider 48. Among them, as Figure 3 shown, the mounting frame 14 is slidably installed on the upper side of the walking platform 4. As Figure 13 shown, one side of the mounting frame 14 away from the cockpit 1 has a U-shaped lower pressing area 51. A lower mounting slider 44 is slidably installed on one side of the mounting frame 14 close to the cockpit 1, and a second sensor 45 is installed on the lower mounting slider 44; as Figure 1 、 2As shown, the first motor 6 is fixedly mounted on the side of the walking platform 4 close to the cockpit 1. The first motor 6 can pull the mounting frame 14 to slide toward the side of the cockpit 1 through the winding wheel 11 and the pull rope 12; Figure 3 As shown, a third motor 40 is fixedly mounted on the outer side of the mounting frame 14 to drive the lower mounting slider 44 to slide along the length direction of the beam 2 .

[0053] like Figure 3 , 5 As shown in FIG. 8 , two electric push rods 29 are installed on the upper side of the mounting frame 14 through a support plate 30, and a sliding frame 46 is fixedly installed on the lower side of the telescopic ends of the two electric push rods 29, and two fourth springs 35 are installed between the sliding frame 46 and the two support plates 30; the sliding frame 46 has a U-shaped upper clamping area 53 on the side away from the cockpit 1, as shown in FIG. Figure 11 , 12 As shown, the upper pressing area 53 cooperates with the lower pressing area 51; Figure 15 As shown, an upper mounting slider 48 is slidably mounted on one side of the sliding frame 46 close to the cockpit 1, and a second sensor 45 is mounted on the upper mounting slider 48; Figure 14 As shown, the upper mounting slider 48 is connected to the lower mounting slider 44 by a retractable connecting rod 50; a fifth spring 36 is respectively installed between the fixed ends of the two electric push rods 29 and the corresponding support plates 30, and the elastic strength of the fifth spring 36 is less than the elastic strength of the fourth spring 35; Figure 9 As shown, two limit rods 33 are slidably mounted on the upper sides of the two support plates 30 to limit the overall sliding of the two electric push rods 29 relative to the support plates 30 .

[0054] The electric push rod 29 can control the sliding frame 46 to slide up and down relative to the mounting frame 14.

[0055] like Figure 7 , 8 As shown, an L-shaped mounting plate 25 is fixedly mounted on the side of the mounting frame 14 away from the cockpit 1, and a first sensor 26 is fixedly mounted on the L-shaped mounting plate 25; a telescopic slide 27 is fixedly mounted on the end surface of the side of the mounting frame 14 away from the cockpit 1, and the distance between the telescopic end of the telescopic slide 27 and the cockpit 1 is greater than the distance between the first sensor 26 and the cockpit 1; the telescopic end of the telescopic slide 27 is transmission-connected with two limit rods 33; the telescopic slide 27 is squeezed and shortened, and the two limit rods 33 contact to limit the two electric push rods 29.

[0056] The first sensor 26 is a photoelectric sensor. When the mounting bracket 14 slides relative to the walking platform 4, when the first sensor 26 is about to touch the trigger plate 9, the telescopic slide plate 27 will first contact the trigger plate 9, and the contact limit rod 33 limits the electric push rod 29. At the same time, the first sensor 26 transmits a signal to the first motor 6, causing the first motor 6 to pull the mounting bracket 14 to slide relative to the walking platform 4 towards the side close to the cockpit 1 through the winding wheel 11 and the pulling rope 12.

[0057] As Figure 4 shown, a winding wheel 11 is fixedly installed on the output shaft of the first motor 6, and a pulling rope 12 is wound around the winding wheel 11. The outer end of the pulling rope 12 is fixedly installed on the mounting bracket 14. When the first motor 6 operates to drive the winding wheel 11 to rotate, the winding wheel 11 rotates to wind the pulling rope 12, and the pulling rope 12 pulls the mounting bracket 14 to slide towards the side of the cockpit 1.

[0058] As Figure 2 shown, a trapezoidal chute 8 is formed on the walking platform 4. As Figure 13 shown, a trapezoidal slider 13 is fixedly installed on the lower side of the mounting bracket 14. As Figure 2 shown, the mounting bracket 14 is installed on the walking platform 4 through the sliding fit of the trapezoidal slider 13 and the trapezoidal chute 8.

[0059] As Figure 2 shown, a trigger plate 9 that cooperates with the telescopic slide plate 27 is fixedly installed on the walking platform 4.

[0060] As Figure 5 , 6 shown, a generator 16 and a battery block 15 are fixedly installed on the side of the mounting bracket 14 close to the cockpit 1, and the battery block 15 is electrically connected to the generator 16; a fixing plate 24 is fixedly installed on the mounting bracket 14, a telescopic rod 23 is fixedly installed on the fixing plate 24, a U-shaped frame 21 is fixedly installed on the lower side of the telescopic rod 23, a first spring 22 is installed between the U-shaped frame 21 and the fixing plate 24, and the first spring 22 is a compression spring; an upper friction wheel 18 is rotatably installed on the U-shaped frame 21, a lower friction wheel 17 and a second gear 20 are coaxially rotatably installed on the mounting bracket 14, and the lower friction wheel 17 and the upper friction wheel 18 are in frictional cooperation with the passing steel wire rope 5; a first gear 19 is fixedly installed on the input shaft of the generator 16, and the first gear 19 meshes with the second gear 20.

[0061] The battery block 15 is electrically connected to the first motor 6.

[0062] During the movement of the wire rope 5, the upper friction wheel 18 and the lower friction wheel 17 are driven to rotate by friction. The rotation of the lower friction wheel 17 drives the second gear 20 to rotate, the rotation of the second gear 20 drives the first gear 19 to rotate, and the rotation of the first gear 19 drives the input shaft of the generator 16 to rotate. The generator 16 generates electricity, and the electricity generated by the generator 16 is transmitted to the battery block 15 for storage to supply power to the first motor 6.

[0063] The function of the first spring 22 is to provide a downward extrusion force on the upper friction wheel 18 to ensure the frictional pressure between the lower friction wheel 17 and the wire rope 5.

[0064] As Figure 8 shown, the telescopic slide plate 27 is provided with a second spring 31 therein, and the second spring 31 is a compression spring; a transmission plate 28 is fixedly installed on the upper side of the telescopic end of the telescopic slide plate 27; the two limiting rods 33 are respectively fixedly installed on the transmission plate 28 through two connecting plates 32. After the telescopic end of the telescopic slide plate 27 is squeezed, the telescopic end of the telescopic slide plate 27 will drive the transmission plate 28 to slide towards the cockpit 1 side, the sliding of the transmission plate 28 drives the connecting plate 32 to slide, the connecting plate 32 drives the limiting rod 33 to slide towards the cockpit 1 side, the limiting rod 33 disengages from the limiting groove 39, and the limiting rod 33 releases the limit on the overall relative sliding of the corresponding electric push rod 29 with respect to the support plate 30.

[0065] The function of the second spring 31 is to reset the telescopic slide plate 27.

[0066] As Figure 9 shown, a third spring 34 is installed between each of the two limiting rods 33 and the corresponding support plate 30, and the third spring 34 is a compression spring. The function of the third spring 34 is to reset the limiting rod 33.

[0067] In the normal situation of the present invention, the fixed end of the electric push rod 29 is limited by the limiting rod 33; when the telescopic end of the electric push rod 29 drives the sliding frame body 46 to move downward relative to the mounting frame 14, since the fixed end of the electric push rod 29 is limited by the limiting rod 33, the fourth spring 35 will be stretched; after the limiting rod 33 releases the limit on the electric push rod 29, because the elastic strength of the fifth spring 36 is less than the elastic strength of the fourth spring 35, at this time, under the action of the fourth spring 35, the electric push rod 29 will slide upward as a whole, and the fifth spring 36 is stretched; after the fourth spring 35 returns to be less than the elastic force of the fifth spring 36 at this time, the fifth spring 36 recovers to a certain extent. After the fault is eliminated, the electric push rod 29 is controlled to shorten and reset, and finally returns to the initial state, while the limiting rod 33 is reset under the action of the third spring 34 and re-inserts into the limiting groove 39 of the electric push rod 29 to re-limit the electric push rod 29.

[0068] As Figure 9As shown, a limiting groove 39 which cooperates with a limiting rod 33 is formed on the outer wall surface of the fixed end of the electric push rod 29.

[0069] As Figure 9 shown, spring mounting plates 37 for fixedly mounting a fifth spring 36 are fixedly installed at the fixed ends of the two electric push rods 29.

[0070] As Figure 9 shown, a second motor 38 for providing power to the electric push rod 29 is fixedly installed at the fixed end of each of the two electric push rods 29.

[0071] As Figure 13 shown, a sliding groove 47 is formed on one side of the mounting bracket 14. As Figure 10 、 14 shown, a transmission connecting plate 43 is fixedly installed on one side of the lower mounting slider 44. A transmission rod 42 is fixedly installed on the transmission connecting plate 43. The transmission rod 42 is in sliding fit with the sliding groove 47. A swing rod 55 is fixedly installed on the output shaft of the third motor 40. A swing slide rail 41 is fixedly installed on the transmission rod 42. One end of the swing rod 55 is provided with a sliding shaft 56. The sliding shaft 56 is in sliding connection with the swing slide rail 41.

[0072] As Figure 10 、 14 shown, an L-shaped connecting slide plate 49 is fixedly installed on the upper mounting slider 48. The upper end of a connecting rod 50 is fixedly installed on the L-shaped connecting slide plate 49. The lower end of the connecting rod 50 is fixedly installed on the transmission connecting plate 43.

[0073] When the third motor 40 works, the third motor 40 drives the swing rod 55 to swing. The swing of the swing rod 55 drives the swing shaft to swing. The swing shaft drives the swing slide rail 41 to slide horizontally. The swing of the swing slide rail 41 drives the transmission rod 42 to slide in the sliding groove 47. The sliding of the transmission rod 42 drives the transmission connecting plate 43 to slide. The sliding of the transmission connecting plate 43 drives the lower mounting slider 44 to slide. The sliding of the lower mounting slider 44 drives the upper mounting slider 48 to slide through the connecting rod 50 and the L-shaped connecting slide plate 49. The connecting rod 50 is telescopic, so that it can be ensured that the connection between the lower mounting slider 44 and the upper mounting slider 48 will not be disconnected during the process that the sliding frame body 46 is driven to slide up and down relative to the mounting bracket 14.

[0074] As Figure 13 shown, a wire insertion opening 52 for inserting a wire is formed on the mounting bracket 14.

[0075] In the present invention, the positional relationship between the sliding frame body 46 and the mounting bracket 14 is divided into the following three types:

[0076] First, when the wire rope 5 needs to be placed inside the detection module 7, the distance between the sliding frame body 46 and the mounting frame 14 is the largest. This distance can ensure that the wire rope 5 is placed between the sliding frame body 46 and the mounting frame 14 from the wire rope inlet 52.

[0077] Second, after the wire rope 5 is placed between the sliding frame body 46 and the mounting frame 14, control the sliding frame body 46 to move downward relative to the mounting frame 14, so that there is still a distance between the sliding frame body 46 and the mounting frame 14. This distance can ensure that the wire rope 5 will not slide out between the sliding frame body 46 and the mounting frame 14.

[0078] Third, the sliding frame body 46 and the mounting frame 14 completely wrap and press the wire rope 5, and the upper pressing area 53 of the sliding frame body 46 fits with the lower pressing area 51 on the mounting frame 14.

[0079] As Figure 16 shown, elastic scraping plates 54 are fixedly installed on both the upper mounting slider 48 and the lower mounting slider 44.

[0080] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

[0081] Embodiment: When using the tower crane designed by the present invention, in the initial state, the limit rod 33 limits the fixed end of the electric push rod 29. During use, control the sliding frame body 46 to move upward relative to the mounting frame 14 through the electric push rod 29, and place the wire rope 5 between the sliding frame body 46 and the mounting frame 14 from the wire rope inlet; then control the sliding frame body 46 to move downward relative to the mounting frame 14 through the electric towing rod, so that there is still a distance between the sliding frame body 46 and the mounting frame 14. This distance can ensure that the wire rope 5 will not slide out between the sliding frame body 46 and the mounting frame 14.

[0082] During use, when the second sensor 45 detects a change in the magnetic field on the wire rope 5, the sliding frame 46 is controlled to move downward by the electric push rod 29, so that the lower pressing area 51 on the mounting frame 14 and the upper pressing area 53 on the sliding frame 46 press the wire rope 5 tightly. The wire rope 5 drives the detection module 7 to move together. Moreover, in this state, the scraping plates 54 on the upper mounting slider 48 and the lower mounting slider 44 contact the wire rope 5, and the second sensor 45 is close to the wire rope 5 but does not contact the wire rope 5. The upper mounting slider 48 and the lower mounting slider 44 slide reciprocally on the sliding frame and the mounting frame 14. During the sliding process, the upper mounting slider 48 and the lower mounting slider 44 reciprocally scrape the debris on the wire rope 5 through the scraping plates 54. At the same time, the second sensor 45 detects the wire rope 5 reciprocally to confirm whether the magnetic field of the wire rope 5 changes. If there is indeed a change, the tower crane is controlled to stop working; if the magnetic field is normal, the electric push rod 29 is controlled to make the sliding frame 46 return to the initial state.

Claims

1. A crane with a detection system for tower sling steel ropes, which comprises a cockpit, a cross beam, a counterweight, a walking platform, and steel ropes, and is characterized in that: A detection module is installed on the walking platform; The detection module includes a first motor, a mounting frame, an L-shaped mounting plate, a first sensor, a telescopic slide plate, an electric push rod, a support plate, a limiting rod, a lower mounting slider, a second sensor, a sliding frame body, and an upper mounting slider. The mounting frame is slidably mounted on the upper side of the walking platform. One side of the mounting frame away from the cockpit has a U-shaped lower pressing area. A lower mounting slider is slidably mounted on one side of the mounting frame close to the cockpit, and a second sensor is mounted on the lower mounting slider. The first motor is fixedly mounted on one side of the walking platform close to the cockpit. The first motor can pull the mounting frame to slide towards the cockpit side through a winding wheel and a pulling rope. A third motor for driving the lower mounting slider to slide along the length direction of the cross beam is fixedly mounted on the outer side of the mounting frame; Two electric push rods are mounted on the upper side of the mounting frame through a support plate. The lower sides of the telescopic ends of the two electric push rods are fixedly mounted with a sliding frame body. Two fourth springs are mounted between the sliding frame body and the two support plates. One side of the sliding frame body away from the cockpit has a U-shaped upper pressing area, and the upper pressing area cooperates with the lower pressing area. An upper mounting slider is slidably mounted on one side of the sliding frame body close to the cockpit, and a second sensor is mounted on the upper mounting slider. The upper mounting slider and the lower mounting slider are connected by a telescopic connecting rod. A fifth spring is respectively mounted between the fixed ends of the two electric push rods and the corresponding support plates. The elastic strength of the fifth spring is less than the elastic strength of the fourth spring. Two limiting rods for limiting the overall sliding of the two electric push rods relative to the support plate are slidably mounted on the upper sides of the two support plates; An L-shaped mounting plate is fixedly mounted on one side of the mounting frame away from the cockpit, and a first sensor is fixedly mounted on the L-shaped mounting plate. The telescopic slide plate is fixedly mounted on the end face of one side of the mounting frame away from the cockpit. The distance between the telescopic end of the telescopic slide plate and the cockpit is greater than the distance between the first sensor and the cockpit. The telescopic end of the telescopic slide plate is in transmission connection with the two limiting rods. The telescopic slide plate is compressed and shortened, and the two limiting rods contact to limit the two electric push rods; A winding wheel is fixedly mounted on the output shaft of the first motor, and a pulling rope is wound on the winding wheel. The outer end of the pulling rope is fixedly mounted on the mounting frame; A trapezoidal chute is formed on the walking platform. A trapezoidal slider is fixedly mounted on the lower side of the mounting frame. The mounting frame is mounted on the walking platform through the sliding fit of the trapezoidal slider and the trapezoidal chute; A trigger plate matched with the telescopic slide plate is fixedly mounted on the walking platform; A generator and a battery block are fixedly mounted on one side of the mounting frame close to the cockpit. The battery block and the generator are electrically connected. A fixing plate is fixedly mounted on the mounting frame. A telescopic rod is fixedly mounted on the fixing plate. A U-shaped frame is fixedly mounted on the lower side of the telescopic rod. A first spring is mounted between the U-shaped frame and the fixing plate. The first spring is a compression spring. An upper friction wheel is rotatably mounted on the U-shaped frame. A lower friction wheel and a second gear are coaxially rotatably mounted on the mounting frame. The lower friction wheel and the upper friction wheel are in frictional cooperation with the passing steel wire rope. A first gear is fixedly mounted on the input shaft of the generator, and the first gear meshes with the second gear; The battery block is electrically connected to the first motor; Elastic scraping plates are fixedly installed on both the upper mounting slider and the lower mounting slider.

2. The crane of a tower sling wire rope detection system according to claim 1, characterized in that: A second spring is provided inside the telescopic slide plate, and the second spring is a compression spring; a transmission plate is fixedly installed on the upper side of the telescopic end of the telescopic slide plate; the two limit rods are respectively fixedly installed on the transmission plate through two connecting plates.

3. The crane of a tower sling wire rope detection system according to claim 1, characterized in that: A third spring is installed between each of the two limit rods and the corresponding support plate, and the third spring is a compression spring; A limit groove matching with the limit rod is formed on the outer wall surface of the fixed end of the electric push rod.

4. A crane of a tower sling wire rope detection system according to claim 1, characterized in that: Spring mounting plates for fixedly installing the fifth spring are fixedly installed at the fixed ends of the two electric push rods; A second motor for providing power to the electric push rod is fixedly installed at the fixed end of each of the two electric push rods.

5. The crane of a tower sling wire rope detection system according to claim 1, characterized in that: A sliding groove is formed on one side of the mounting frame, a transmission connecting plate is fixedly installed on one side of the lower mounting slider, a transmission rod is fixedly installed on the transmission connecting plate, and the transmission rod is in sliding fit with the sliding groove; a swing rod is fixedly installed on the output shaft of the third motor, a swing slide rail is fixedly installed on the transmission rod, and one end of the swing rod has a sliding shaft, and the sliding shaft is slidably connected to the swing slide rail.

6. The crane of a tower sling wire rope detection system according to claim 5, characterized in that: An L-shaped connecting slide plate is fixedly installed on the upper mounting slider, the upper end of the connecting rod is fixedly installed on the L-shaped connecting slide plate, and the lower end of the connecting rod is fixedly installed on the transmission connecting plate; A wire insertion opening for inserting a wire is formed on the mounting frame.

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