A wire rope detection device for the hoisting of tower cranes

Abstract

The present invention belongs to the technical field of cranes, and particularly relates to a detection device for the hoisting wire rope of a tower crane. The detection device is installed on the cross beam of the tower crane. During the specific use process, if a signal transmission failure occurs between the third induction piece and the second motor, then when the third induction piece transmits a signal to the second motor and the second motor controls the electric push rod to work, causing the electric push rod to drive the sliding frame to move upward and the signal cannot be transmitted out, the bottom frame and the sliding frame will always clamp the wire rope and move along with the wire rope. At this time, the sliding frame will slide relative to the sliding rod towards the side away from the cockpit. When the pulling rope on the winding wheel is completely pulled out, the wire rope is tightened, and the pressing plate on the sliding rod presses the second induction piece, controlling the electric push rod to work through the second induction piece. At the same time, the wire rope directly pulls the limiting rod through the sliding rod and the sliding sleeve to release the limit on the electric push rod, enabling the sliding frame to move upward relative to the bottom frame and releasing the pressing on the wire rope.

Description

Technical Field

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

[0002] The induction sheet of the CK.W magnetic memory wire rope AI weak magnetic detection technology is arranged on the side close to the wire rope during actual use. Since the crane operates at high altitude, the wire rope is greatly affected by heavy objects and wind and often swings; when the wire rope swings or jumps due to vibration, the wire rope will hit the induction sheet. Since the induction sheet used in the crane is relatively expensive, the use cost is increased invisibly.

[0003] In addition, although the wire rope is convenient for the CK.W magnetic memory wire rope AI weak magnetic detection technology to identify passing through the magnetic block, when the wire rope is working, if magnetic impurities adhere to it, the magnetism of the wire rope will be affected, resulting in the judgment of the technology.

[0004] The improvement of the invention for the CK.W magnetic memory wire rope AI weak magnetic detection technology solves the above problems. Summary of the Invention

[0005] In order to achieve the above object, the invention adopts the following technical solutions:

[0006] A detection device for the hoisting wire rope of a tower crane, the detection device is installed on the cross beam of the tower crane; the detection device includes a guide rod, a chassis, an electric push rod, a sliding frame, a first spring, a second spring, a fixed support, a limit rod, a first slider, a second slider, a third induction sheet, and a scraping blade. Among them, two guide rods are symmetrically and fixedly installed on the cross beam, the chassis is slidably installed on the two guide rods, the side of the chassis away from the cockpit has a U-shaped lower pressing groove, and the side of the chassis close to the cockpit is slidably installed with a second slider; the sliding frame is slidably installed on the upper side of the chassis, the side of the sliding frame away from the cockpit has a U-shaped upper pressing groove, and the upper pressing groove cooperates with the lower pressing groove; the side of the sliding frame close to the cockpit is slidably installed with a first slider; the third induction sheets are installed on both the first slider and the second slider; the electric push rod is installed on the upper side of the chassis through a fixed support, the fixed end of the electric push rod is fixedly connected with the fixed support, and the telescopic end of the electric push rod is fixedly connected with the sliding frame; a second spring is installed between the sliding frame and the fixed support, and a first spring is installed between the electric push rod and the fixed support; a limit rod that can slide the fixed end of the electric push rod relative to the fixed support is slidably installed on the fixed support.

[0007] Scraping blades are fixedly installed on both the first slider and the second slider.

[0008] As a preferred solution, a first motor is fixedly installed on one side of the cross beam close to the cockpit. A wire rope wheel is fixedly installed on the output shaft of the first motor. A wire rope is wound around the wire rope wheel. The outer end of the wire rope is fixedly connected to the limiting rod after being guided by a guide wheel.

[0009] A third spring is installed between the limiting rod and the fixed support. The third spring is a compression spring and has a pre-pressure.

[0010] As a preferred solution, an induction module is installed at one end of the wire rope close to the limiting rod. At the place where the induction module is installed, the wire rope is cut into two parts.

[0011] The induction module includes a fourth spring, a sliding sleeve, a sliding rod, and a second induction piece. The sliding rod is slidably installed in the sliding sleeve. A fourth spring is installed between one end of the sliding rod and the inner end face of the sliding sleeve. The other end of the sliding rod passes through the sliding sleeve. The sliding sleeve and the sliding rod are respectively connected to the two cut ends of the wire rope. A second induction piece is fixedly installed on the inner end face of the end of the sliding sleeve far from the limiting rod. A pressure plate is fixedly installed on the sliding rod, and the pressure plate cooperates with the second induction piece.

[0012] As a preferred solution, an L-shaped plate is fixedly installed on one side of the chassis far from the cockpit. A first induction piece is fixedly installed on the L-shaped plate.

[0013] As a preferred solution, a second motor for controlling the operation of the electric push rod is installed at the fixed end of the electric push rod.

[0014] As a preferred solution, a limiting hole for cooperating with the limiting rod is opened at the fixed end of the electric push rod.

[0015] As a preferred solution, two installation sliding rods are symmetrically and slidably installed on both sides of the chassis. A sixth spring is installed between the installation sliding rods and the chassis. A telescopic inner rod is slidably installed on each installation sliding rod. A fifth spring is installed between the telescopic inner rod and the corresponding installation sliding rod.

[0016] One end of the two telescopic inner rods far from the installation sliding rods is fixedly installed with a guide ring, and the guide ring is slidably connected with a guide rod.

[0017] As a preferred solution, a wire rope avoidance opening for placing the steel wire is opened on the chassis.

[0018] As a preferred solution, an L-shaped connecting plate is fixedly installed on the first slider, and a transmission plate is fixedly installed on the second slider. The transmission plate and the L-shaped connecting plate are connected by a telescopic connecting rod.

[0019] As a preferred solution, a screw rod is rotatably installed on the chassis. A third motor is fixedly installed on the chassis, and the output shaft of the third motor is fixedly connected to the screw rod. The screw rod is in threaded cooperation with the second slider.

[0020] Compared with the existing technology, the advantages of the present invention are as follows:

[0021] 1. The first induction piece is a photoelectric induction piece. When the chassis slides relative to the cross beam and the first induction piece is about to touch the walking platform, the first induction piece transmits a signal to the first motor and the electric push rod. The telescopic end of the electric push rod drives the sliding frame to slide upward, and the first motor pulls the chassis to slide relative to the cross beam towards the side close to the cockpit through the steel rope wheel, steel rope, limiting rod, electric push rod and sliding frame.

[0022] 2. During use, when the third induction piece detects a change in the magnetic field on the steel wire rope, it controls the sliding frame to move downward through the electric push rod, so that the lower pressing groove on the chassis and the upper pressing groove on the sliding frame clamp the steel wire rope. The steel wire rope drives the chassis to move together. Moreover, in this state, the scraping pieces on the first slider and the second slider contact the steel wire rope, and the third induction piece is close to the steel wire rope but does not contact it; the first slider and the second slider slide back and forth on the sliding frame and the chassis, and the scraping pieces on the first slider and the second slider reciprocally scrape the debris on the steel wire rope during the sliding process; at the same time, the third induction piece reciprocally detects the steel wire rope 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 return to the initial state.

[0023] 3. The present invention can buffer the chassis when it shakes with the steel wire rope through the designed installation slide rod, telescopic inner rod, fifth spring and sixth spring.

[0024] 4. During specific use, if a signal transmission failure occurs between the third induction piece and the second motor, when the third induction piece transmits a signal to the second motor and the second motor controls the electric push rod to work, when the signal cannot be transmitted during the process of the electric push rod driving the sliding frame to move upward, the chassis and the sliding frame will always clamp the steel wire rope and move along with the steel wire rope. At this time, the sliding frame will slide relative to the sliding rod towards the side away from the cockpit. During the process, when the pulling rope on the winding wheel is completely pulled out, the steel wire rope is tightened, and the pressing plate on the sliding rod presses the second induction piece, and the second induction piece controls the electric push rod to work. At the same time, the steel wire rope directly pulls the limiting rod through the sliding rod and the sliding sleeve to release the limit on the electric push rod, so that the sliding frame moves upward relative to the chassis and releases the pressing on the steel wire rope. Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the overall component appearance.

[0026] Figure 2 It is a schematic diagram of the installation of the detection device.

[0027] Figure 3 It is a schematic diagram of the installation of the steel wire rope.

[0028] Figure 4 It is a schematic diagram of the connection between the steel rope and the limit rod.

[0029] Figure 5 It is a schematic diagram of the structure of the induction module.

[0030] Figure 6 It is a schematic diagram of the installation of the chassis.

[0031] Figure 7 It is a schematic diagram of the installation of the first slider and the second slider.

[0032] Figure 8 It is a schematic diagram of the installation of the first slider.

[0033] Figure 9 It is a schematic diagram of the connection between the first slider and the second slider.

[0034] Figure 10 It is a schematic diagram of the structure of the first slider.

[0035] Names of the reference numerals in the figure: 1. Counterweight; 2. Cross beam; 3. Cockpit; 4. First motor; 5. Detection device; 6. Guide rod; 7. Steel wire rope; 8. Steel rope; 9. Steel rope wheel; 10. Chassis; 11. Electric push rod; 12. Sliding frame; 13. L-shaped plate; 14. First induction piece; 15. Fixed support; 16. First spring; 17. Second spring; 18. Limit rod; 19. Second motor; 20. Third spring; 21. Pressure plate; 22. Guide wheel; 23. Induction module; 24. Fourth spring; 25. Sliding sleeve; 26. Sliding rod; 27. Second induction piece; 28. Limit hole; 29. Sixth spring; 30. Telescopic inner rod; 31. Installation sliding rod; 32. Steel wire rope avoidance opening; 33. Guide ring; 34. Fifth spring; 35. First slider; 36. Second slider; 37. Screw; 38. Third motor; 39. Connecting rod; 40. Upper pressing groove; 41. L-shaped connecting plate; 42. Transmission plate; 43. Third induction piece; 44. Scraper; 45. Lower pressing groove. Specific embodiments

[0036] The following will further describe in detail the specific embodiments of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments or drawings are used to illustrate the present invention, but not to limit the scope of the present invention.

[0037] Unless otherwise specified, 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 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 used to describe 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 by combining the drawings and according to specific circumstances.

[0038] Unless otherwise clearly defined and limited, 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.

[0039] A detection device 5 for the lifting wire rope 7 of a tower crane, as Figure 1 , 2 shown, there are counterweights 1, crossbeams 2, and cabs 3 on the tower crane, and the detection device 5 is installed on the crossbeam 2.

[0040] As Figure 3 , 4 shown, the detection device 5 includes guide rods 6, a chassis 10, an electric push rod 11, a sliding frame 12, a first spring 16, a second spring 17, a fixed support 15, a limiting rod 18, a first slider 35, a second slider 36, a third induction piece 43, and a scraping piece 44. Among them, two guide rods 6 are symmetrically and fixedly installed on the crossbeam 2, and the chassis 10 is slidably installed on the two guide rods 6. As Figure 6 shown, the side of the chassis 10 away from the cab 3 has a U-shaped lower pressing groove 45, and a second slider 36 is slidably installed on the side of the chassis 10 close to the cab 3; the sliding frame 12 is slidably installed on the upper side of the chassis 10. As Figure 8 shown, the side of the sliding frame 12 away from the cab 3 has a U-shaped upper pressing groove 40. As Figure 7 shown, the upper pressing groove 40 cooperates with the lower pressing groove 45; a first slider 35 is slidably installed on the side of the sliding frame 12 close to the cab 3; as Figure 10As shown, third induction sheets 43 are installed on both the first slider 35 and the second slider 36; an electric push rod 11 is installed on the upper side of the chassis 10 through a fixed support 15. The fixed end of the electric push rod 11 is fixedly connected to the fixed support 15, and the telescopic end of the electric push rod 11 is fixedly connected to the sliding frame 12; a second spring 17 is installed between the sliding frame 12 and the fixed support 15, and a first spring 16 is installed between the electric push rod 11 and the fixed support 15; a limiting rod 18 that can slide relative to the fixed support 15 for the fixed end of the electric push rod 11 is slidably installed on the fixed support 15.

[0041] As Figure 10 shown, scraping blades 44 are fixedly installed on both the first slider 35 and the second slider 36.

[0042] As Figure 1 、 2 As shown in Figure 3, a first motor 4 is fixedly installed on the cross beam 2 close to one side of the cockpit 3. A wire rope wheel 9 is fixedly installed on the output shaft of the first motor 4. A wire rope 8 is wound around the wire rope wheel 9. The outer end of the wire rope 8 is fixedly connected to the limiting rod 18 after being guided by a guide wheel 22. When the first motor 4 works to drive the wire rope wheel 9 to rotate, the wire rope wheel 9 rotates to wind the wire rope 8, and the wire rope 8 pulls the chassis 10 to slide relative to the cross beam 2 towards the side close to the cockpit 3 through the limiting rod 18, the electric push rod 11 and the sliding frame 12.

[0043] As Figure 5 shown, a third spring 20 is installed between the limiting rod 18 and the fixed support 15. The third spring 20 is a compression spring and has a pre-pressure. The function of the third spring 20 is to reset the limiting rod 18.

[0044] In the normal situation of the present invention, the fixed end of the electric push rod 11 is limited by the limiting rod 18; when the telescopic end of the electric push rod 11 drives the sliding frame 12 to move downward relative to the chassis 10, since the fixed end of the electric push rod 11 is limited by the limiting rod 18, the second spring 17 will be stretched; after the limiting rod 18 releases the limitation on the electric push rod 11, since the elastic strength of the first spring 16 is less than that of the second spring 17, at this time, under the action of the second spring 17, the electric push rod 11 will slide upward as a whole, and the first spring 16 is stretched; after the second spring 17 restores to be less than the elastic force of the first spring 16 at this time, the first spring 16 recovers to a certain extent. After the fault is removed, the electric push rod 11 is controlled to shorten and reset, and finally returns to the initial state, while the limiting rod 18 resets under the action of the third spring 20 and re-inserts into the limiting hole 28 of the electric push rod 11 to re-limit the electric push rod 11.

[0045] As Figure 5As shown, an induction module 23 is installed at one end of the steel rope 8 close to the limit rod 18, and the steel rope 8 is cut into two parts at the installation position of the induction module 23.

[0046] As Figure 5 As shown, the induction module 23 includes a fourth spring 24, a sliding sleeve 25, a sliding rod 26, and a second induction piece 27. The sliding rod 26 is slidably installed in the sliding sleeve 25, and a fourth spring 24 is installed between one end of the sliding rod 26 and the inner end face of the sliding sleeve 25; the other end of the sliding rod 26 passes through the sliding sleeve 25; the sliding sleeve 25 and the sliding rod 26 are respectively connected to the two cut ends of the steel rope 8; a second induction piece 27 is fixedly installed on the inner end face of the sliding sleeve 25 away from the limit rod 18; a pressure plate 21 is fixedly installed on the sliding rod 26, and the pressure plate 21 cooperates with the second induction piece 27.

[0047] As Figure 4 As shown, an L-shaped plate 13 is fixedly installed on one side of the chassis 10 away from the cockpit 3, and a first induction piece 14 is fixedly installed on the L-shaped plate 13. The first induction piece 14 is a photoelectric induction piece. When the chassis 10 slides relative to the cross beam 2, if the walking platform is very close to the detection device 5, when the first induction piece 14 is about to touch the walking platform, the first induction piece 14 transmits a signal to the first motor 4 and the electric push rod 11, and the telescopic end of the electric push rod 11 drives the sliding frame 12 to slide upward. The first motor 4 pulls the chassis 10 to slide relative to the cross beam 2 toward the side close to the cockpit 3 through the steel rope wheel 9, the steel rope 8, the limit rod 18, the electric push rod 11, and the sliding frame 12.

[0048] As Figure 5 As shown, a second motor 19 for controlling the operation of the electric push rod 11 is installed at the fixed end of the electric push rod 11.

[0049] As Figure 5 As shown, a limit hole 28 for cooperating with the limit rod 18 is provided at the fixed end of the electric push rod 11.

[0050] As Figure 6 As shown, two installation sliding rods 31 are symmetrically and slidably installed on both sides of the chassis 10, and a sixth spring 29 is installed between the installation sliding rods 31 and the chassis 10; a telescopic inner rod 30 is slidably installed on each installation sliding rod 31, and a fifth spring 34 is installed between the telescopic inner rod 30 and the corresponding installation sliding rod 31.

[0051] As Figure 6 As shown, a guide ring 33 is fixedly installed at one end of the two telescopic inner rods 30 away from the installation sliding rods 31, and the guide ring 33 is slidably connected to the guide rod 6.

[0052] In the present invention, the designed mounting slide rod 31, telescopic inner rod 30, fifth spring 34 and sixth spring 29 can play a buffering role when the chassis 10 shakes along with the steel wire rope 7.

[0053] As Figure 6 shown, a wire rope avoidance opening for placing the steel wire is formed on the chassis 10.

[0054] In the present invention, the positional relationship between the sliding frame 12 and the chassis 10 is divided into the following three types:

[0055] First, when the wire rope 7 needs to be placed in the detection device 5, the distance between the sliding frame 12 and the chassis 10 is the largest, and this distance can ensure that the wire rope 7 is placed between the sliding frame 12 and the chassis 10 from the wire rope avoidance opening.

[0056] Second, after the wire rope 7 is placed between the sliding frame 12 and the chassis 10, control the sliding frame 12 to move downward relative to the chassis 10, so that there is still a distance between the sliding frame 12 and the chassis 10, and this distance can ensure that the wire rope 7 will not slide out between the sliding frame 12 and the chassis 10.

[0057] Third, the sliding frame 12 and the chassis 10 completely wrap and press the wire rope 7, and the upper pressing groove 40 on the sliding frame 12 fits with the lower pressing groove 45 on the chassis 10.

[0058] As Figure 9 shown, an L-shaped connecting plate 41 is fixedly installed on the first slider 35, a transmission plate 42 is fixedly installed on the second slider 36, and the transmission plate 42 is connected to the L-shaped connecting plate 41 through a telescopic connecting rod 39.

[0059] As Figure 7 shown, a screw rod 37 is rotatably installed on the chassis 10, a third motor 38 is fixedly installed on the chassis 10, and the output shaft of the third motor 38 is fixedly connected to the screw rod 37; the screw rod 37 is in threaded fit with the second slider 36.

[0060] When the third motor 38 works, it will drive the screw rod 37 to rotate. When the screw rod 37 rotates, the second slider 36 slides. The second slider 36 drives the first slider 35 to slide through the transmission plate 42, connecting rod 39 and L-shaped connecting plate 41; the connecting rod 39 can be telescopic, so as to ensure that the connection between the second slider 36 and the first slider 35 will not be disconnected during the process that the sliding frame 12 is driven to slide up and down relative to the chassis 10.

[0061] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any simple modification and equivalent change made to the above embodiments based on the technical essence of the present invention all fall within the protection scope of the present invention.

[0062] Embodiment: When using the crane designed by the present invention, in the initial state, the limit rod 18 limits the fixed end of the electric push rod 11. During use, the electric push rod 11 is used to control the sliding frame 12 to move upward relative to the chassis 10, and the steel wire rope 7 is placed between the sliding frame 12 and the chassis 10 through the steel wire rope avoidance port 32; then the electric towing rod is used to control the sliding frame 12 to move downward relative to the chassis 10, so that there is still a spacing between the sliding frame 12 and the chassis 10, and this spacing can ensure that the steel wire rope 7 will not slip out between the sliding frame 12 and the chassis 10.

[0063] During the use process, when the third induction piece 43 detects a change in the magnetic field on the steel wire rope 7, the electric push rod 11 is used to control the sliding frame 12 to move downward, so that the lower pressing groove 45 on the chassis 10 and the upper pressing groove 40 on the sliding frame 12 press the steel wire rope 7 tightly. The steel wire rope 7 drives the chassis 10 to move together. Moreover, in this state, the scraping pieces 44 on the first slider 35 and the second slider 36 contact the steel wire rope 7, and the third induction piece 43 approaches the steel wire rope 7 but does not contact the steel wire rope 7; the first slider 35 and the second slider 36 slide reciprocally on the sliding frame 12 and the chassis 10, and the scraping pieces 44 on the first slider 35 and the second slider 36 reciprocally scrape the sundries on the steel wire rope 7 during the sliding process; at the same time, the third induction piece 43 detects the steel wire rope 7 reciprocally to confirm whether the magnetic field of the steel wire rope 7 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 11 is controlled to make the sliding frame 12 return to the initial state.

[0064] During the specific use process, if a signal transmission failure occurs between the third induction piece 43 and the second motor 19, then when the third induction piece 43 transmits the signal to the second motor 19 and the second motor 19 controls the electric push rod 11 to work, when the signal cannot be transmitted during the process of the electric push rod 11 driving the sliding frame 12 to move upward, the chassis 10 and the sliding frame 12 will always clamp the steel wire rope 7 and move along with the steel wire rope 7. At this time, the sliding frame will slide away from the cab 3 relative to the sliding rod 26. During the process, when the pulling rope on the winding wheel is completely pulled out, the steel wire rope 7 is tightened, and the pressing plate 21 on the sliding rod 26 presses the second induction piece 27. The second induction piece 27 is used to control the electric push rod 11 to work. At the same time, the steel wire rope 8 directly pulls the limit rod 18 through the sliding rod 26 and the sliding sleeve 25 to release the limit on the electric push rod 11, so that the sliding frame 12 moves upward relative to the chassis 10 to release the pressing on the steel wire rope 7.

Claims

1. A detection device for the hoisting steel wire rope of a tower crane, characterized in that: The detection device is installed on the crossbeam of the tower crane; The detection device includes a guide rod, a chassis, an electric push rod, a sliding frame, a first spring, a second spring, a fixed support, a limit rod, a first slider, a second slider, a third induction piece, and a scraping piece. Among them, two guide rods are symmetrically and fixedly installed on the crossbeam, the chassis is slidably installed on the two guide rods, the side of the chassis away from the cockpit has a U-shaped lower pressing groove, and a second slider is slidably installed on the side of the chassis close to the cockpit; the sliding frame is slidably installed on the upper side of the chassis, the side of the sliding frame away from the cockpit has a U-shaped upper pressing groove, and the upper pressing groove cooperates with the lower pressing groove; a first slider is slidably installed on the side of the sliding frame close to the cockpit; third induction pieces are installed on both the first slider and the second slider; an electric push rod is installed on the upper side of the chassis through a fixed support, the fixed end of the electric push rod is fixedly connected to the fixed support, and the telescopic end of the electric push rod is fixedly connected to the sliding frame; a second spring is installed between the sliding frame and the fixed support, and a first spring is installed between the electric push rod and the fixed support; a limit rod that can slide the fixed end of the electric push rod relative to the fixed support is slidably installed on the fixed support; Scraping pieces are fixedly installed on both the first slider and the second slider; A first motor is fixedly installed on the crossbeam close to the cockpit side, a steel wire rope wheel is fixedly installed on the output shaft of the first motor, a steel wire rope is wound on the steel wire rope wheel, and the outer end of the steel wire rope is fixedly connected to the limit rod after being guided by a guide wheel; A third spring is installed between the limit rod and the fixed support, and the third spring is a compression spring and has a pre-pressure; An induction module is installed at one end of the steel wire rope close to the limit rod, and at the place where the induction module is installed, the steel wire rope is cut into two parts; The induction module includes a fourth spring, a sliding sleeve, a sliding rod, and a second induction piece. Among them, the sliding rod is slidably installed in the sliding sleeve, and a fourth spring is installed between one end of the sliding rod and the inner end face of the sliding sleeve; the other end of the sliding rod passes through the sliding sleeve; the sliding sleeve and the sliding rod are respectively connected to the two cut ends of the steel wire rope; a second induction piece is fixedly installed on the inner end face of the sliding sleeve away from the limit rod; a pressure plate is fixedly installed on the sliding rod, and the pressure plate cooperates with the second induction piece.

2. The wire rope detection device for the hoisting of a tower crane according to claim 1, characterized in that: An L-shaped plate is fixedly installed on the side of the chassis away from the cockpit, and a first induction piece is fixedly installed on the L-shaped plate.

3. The wire rope detecting device for the tower crane hoisting according to claim 1, wherein: A second motor for controlling whether the electric push rod works or not is installed at the fixed end of the electric push rod.

4. A wire rope detection device for the hoisting of tower cranes according to claim 1, characterized in that: A limit hole matching the limit rod is opened at the fixed end of the electric push rod.

5. The wire rope detection device for tower crane lifting according to claim 1, wherein: Two installation sliding rods are symmetrically and slidably installed on both sides of the chassis, and a sixth spring is installed between the installation sliding rod and the chassis; a telescopic inner rod is slidably installed on each installation sliding rod, and a fifth spring is installed between the telescopic inner rod and the corresponding installation sliding rod; One guide ring is fixedly installed at one end of the two telescopic inner rods away from the installation sliding rod, and the guide ring is slidably connected to the guide rod.

6. The wire rope detection device for tower crane lifting according to claim 1, wherein: A wire rope avoidance opening for the steel wire to be placed is opened on the chassis.

7. The wire rope detecting device for the tower crane hoisting according to claim 1, characterized in that: An L-shaped connecting plate is fixedly installed on the first slider, a transmission plate is fixedly installed on the second slider, and the transmission plate and the L-shaped connecting plate are connected by a telescopic connecting rod.

8. A wire rope detection device for the hoisting of a tower crane according to claim 7, characterized in that: A screw rod is rotatably installed on the chassis, a third motor is fixedly installed on the chassis, an output shaft of the third motor is fixedly connected to the screw rod; the screw rod is in threaded fit with the second slider.

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