A tower crane hoisting safety detection device and method

Abstract

The present invention provides a tower crane lifting safety detection device, which relates to the field of tower cranes, including a top seat, a base is provided below the top seat, a plurality of connecting arc plates are fixedly connected between the top seat and the base, and the plurality of connecting arc plates are arranged in an equidistant ring, a hanging ring is fixedly connected to the top seat, and a plurality of hanging ears are fixedly connected to the lower end seat surface of the top seat, and the plurality of hanging ears are arranged in an equidistant ring. The present invention drives the rack to move through the telescopic end of the hydraulic cylinder, drives the arc top plate on the bearing disk driven by the main shaft to rotate in turn to press against a plurality of slings, and the arc top plate can be used to lift up a plurality of slings in turn, so as to realize the tension tightening test of a plurality of slings, so as to ensure that the connection of the slings is firm enough; by moving the arc interlocking plate to press against the sling, it is possible to automatically judge whether the sling is loose or broken during the retrieval process, without the need for visual inspection by the staff, which is more reliable and safe.

Description

Technical Field

[0001] The invention relates to the field of tower cranes, and in particular to a tower crane hoisting safety detection device and method. Background Art

[0002] Tower cranes are the main lifting equipment in the construction industry and are widely used in the vertical and horizontal transportation of multi-story and high-rise construction materials. Tower cranes are mainly composed of tower base, tower body, boom, trolley and hook, and perform operations such as hook lifting, trolley luffing, and boom rotation. As a large-scale construction equipment for lifting heavy objects, tower cranes need to be safety monitored for their lifting equipment before use to ensure that the crane can lift normally and safely and ensure the normal transportation of construction materials.

[0003] Before lifting, workers of existing tower cranes will hang the hooks at one end of multiple slings on the ears on multiple lifting plates. After the initial visual inspection, the cranes are slowly lifted to a certain height using the lifting equipment, and then a secondary visual inspection is performed on the multiple slings to ensure that the slings are completely hung securely. However, the stress on the slings after lifting cannot be simply judged visually. Even if the pre-lifting can be tightened normally, the slings may fall off due to uneven stress on the slings during subsequent lifting due to factors such as the irregular shape of the lifting object. Its safety needs to be improved.

[0004] Therefore, it is necessary to provide a new tower crane lifting safety detection device and method to solve the above technical problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a tower crane lifting safety detection device and method.

[0006] A tower crane lifting safety detection device and method provided by the present invention include: a top seat, a base is provided below the top seat, a plurality of connecting arc plates are fixedly connected between the top seat and the base, the plurality of connecting arc plates are equidistantly arranged in annular shapes, a hanging ring is fixedly connected to the top seat, a plurality of hanging ears are fixedly connected to the lower end seat surface of the top seat, the plurality of hanging ears are equidistantly arranged in annular shapes; an automatic detection mechanism, the automatic detection mechanism includes a main shaft, the lower end of the main shaft is rotatably connected to the middle part of the base, the upper end of the main shaft is rotatably connected to the middle part of the top seat, a bearing disk is fixedly connected to the main shaft, an arc-shaped top plate is fixedly connected to the bearing disk, a matching disk is provided below the bearing disk, the matching disk is fixedly connected to the base, a swivel is provided in the middle part of the matching disk, the main shaft is rotatably connected to the matching disk, a plurality of cable grooves are provided on the base, and a driving assembly is provided between the main shaft and the top seat.

[0007] Preferably, both ends of the arc-shaped side of the arc-shaped top plate are concavely arranged, and the plurality of cable grooves are equidistantly arranged in a ring shape, and the plurality of cable grooves are respectively arranged below the plurality of hanging ears.

[0008] Preferably, the driving assembly includes a connecting shaft, which is fixedly connected to the top end of the main shaft, the connecting shaft is arranged inside the top seat, a gear is fixedly connected to the connecting shaft, a mounting opening is provided on the side wall of the top seat, and a hydraulic cylinder is installed and connected in the mounting opening. A rack is fixedly connected to the telescopic end of the hydraulic cylinder, and the rack is meshed with the gear.

[0009] Preferably, a long groove is provided inside the arc-shaped top plate, one end of the long groove is fixedly connected to a built-in plate, a sliding rod is slidably connected to the built-in plate, one end of the sliding rod is fixedly connected to an arc-shaped interlocking plate, the other end of the sliding rod is fixedly connected to a back plate, a small spring is sleeved on the sliding rod, one end of the small spring is connected to the back plate, and the other end of the small spring is connected to the built-in plate.

[0010] Preferably, an electromagnet is installed and connected on the groove wall at the other end of the long groove, a groove is provided on one side of the built-in plate, a magnetic block is installed and connected in the groove, the magnetic poles of the electromagnet after power-on are the same as those of the magnetic block, and a trigger assembly is provided between the bearing disk and the coordination disk.

[0011] Preferably, the trigger assembly includes a main contact piece, which is fixedly mounted on the lower disk surface of the bearing disk, and the main contact piece is aligned with the arc-shaped top plate. A plurality of auxiliary contact pieces are fixedly mounted on the coordination disk, and the plurality of auxiliary contact pieces are equidistantly arranged in a ring shape.

[0012] Preferably, an alarm is installed and connected on the side wall of the top seat, an embedded contact is installed and connected on the other side surface of the back plate, and an alignment contact is installed and connected on one side wall of the long groove, and the embedded contact is aligned with the alignment contact.

[0013] Preferably, a plurality of the cable grooves are provided with a matching slot on one side of the groove wall, a plurality of arc-shaped cavities are provided inside the base, the plurality of the arc-shaped cavities are equidistantly arranged in annular shapes, the plurality of the arc-shaped cavities are respectively arranged on the other side of the plurality of cable grooves, a closing mechanism is provided in the plurality of the arc-shaped cavities, the closing mechanism includes a closing plate, the plurality of the closing plates are slidably connected to the cavity wall at one end of the arc-shaped cavity, the other end of the plurality of the closing plates is fixedly connected to a piston, a built-in spring is provided inside the arc-shaped cavity, one end of the built-in spring is connected to the piston, and the other end of the built-in spring is connected to the cavity wall of the arc-shaped cavity, and a gas transmission component is provided inside the base.

[0014] Preferably, the gas delivery component includes an air pump, which is fixedly installed inside the base, and a dispersed gas shell is installed and connected at the air outlet end of the air pump, and a plurality of branch pipes are provided on the shell wall of the dispersed gas shell, and the plurality of branch pipes are arranged in an equidistant ring shape, and an air inlet is provided on the cavity wall at one end of the plurality of arc-shaped cavities, and one end of the plurality of branch pipes is respectively connected to the air inlet on the cavity wall of the plurality of arc-shaped cavities, and an air inlet valve is installed and connected inside the plurality of branch pipes, and an exhaust port is provided on the cavity wall at one end of the plurality of arc-shaped cavities, and a solenoid valve is installed and connected in the plurality of exhaust ports.

[0015] The present invention also proposes a method for detecting the hoisting safety of a tower crane, comprising the following steps:

[0016] S1. Place multiple slings close to multiple sling grooves on the base in sequence, hang them on the hanging ears on the top seat, install the hooks and the hanging rings, and perform a pre-lifting test;

[0017] S2, starting the air pump to gradually increase the air pressure inside the multiple arc-shaped cavities, driving one end of the multiple sealing plates to slide into the multiple matching slots on one side of the cable slot, and using the multiple sealing plates to limit and seal the multiple slings;

[0018] S3, the hydraulic cylinder drives the rack to move, driving the meshing gear and the main shaft to drive the bearing plate to rotate, so that the arc-shaped top plate rotates accordingly and rotates in turn to tighten multiple slings, and performs tension tension tests on multiple slings;

[0019] S4. The electromagnet is energized to repel the magnetic block in the corresponding long slot, so that the slide rod drives the arc-shaped interlocking plate to move against the sling. By extending multiple arc-shaped interlocking plates, it is possible to automatically determine whether the sling is loose or broken during the retrieval process, without the need for visual inspection by staff.

[0020] Compared with the related art, the tower crane lifting safety detection device and method provided by the present invention have the following beneficial effects:

[0021] 1. The invention drives the rack to move through the telescopic end of the hydraulic cylinder, drives the gear meshing with it to rotate, drives the main shaft to drive the bearing plate to rotate, and the bearing plate drives the arc top plate to rotate accordingly, so that the arc top plate rotates in turn to press against multiple slings. The arc top plate can be used to lift up multiple slings in turn, and the tension tension test of multiple slings can be realized to ensure that the connection of the slings is firm enough;

[0022] 2. The present invention generates magnetic repulsion by electrifying the electromagnet to cause the magnetic block in the corresponding long slot, so that the magnetic block drives the back plate to drive the slide bar to slide relative to the built-in plate, and the small spring undergoes elastic deformation. One end of the slide bar drives the arc-shaped interlocking plate to slide, so that the arc-shaped interlocking plate moves to resist the sling. By extending a plurality of arc-shaped interlocking plates, it is possible to automatically determine whether the sling is loose or broken during the retrieval process, without the need for visual inspection by staff, which is more reliable and safe.

[0023] 3. The present invention uses an air pump to deliver gas into the interior of the dispersed air shell, and then delivers the gas to the interior of the multiple arc-shaped cavities in a unidirectional manner through the air intake valves on the multiple branch pipes, so that the air pressure inside the multiple arc-shaped cavities gradually increases, driving the multiple pistons to push the multiple sealing plates to slide, so that the multiple built-in springs are elastically deformed, and one end of the multiple sealing plates slides into the matching card slots on one side of the multiple cable grooves, and the multiple sealing plates are used to limit and seal the multiple slings to ensure that during subsequent inspections, the multiple slings will not slide out of the multiple cable grooves, so that they can be safely inspected and can be carried out normally;

[0024] 4. The present invention controls the opening through multiple solenoid valves, and multiple built-in springs all restore elastic deformation, so that the air inside the multiple arc-shaped cavities is discharged through multiple exhaust ports, driving multiple pistons to drive multiple sealing plates to move in the opposite direction and reset, so that multiple cable grooves can be restored to the open state, so as to facilitate the next installation of the sling for inspection.

[0025] 5. The present invention moves the arc-shaped interlocking plate out of the long slot. If the sling breaks during the detection process, the back plate drives the embedded contact piece to move tightly against the contact piece, thus forming a complete electrical path, so that the alarm works accordingly, reminding the staff of the sling break problem, and timely adjustment and processing can be made to ensure that the subsequent lifting operation is safer;

[0026] 6. The present invention drives the main contact piece to rotate along with the arc-shaped interlocking plate by rotating the bearing disk, and the main contact piece rotates in turn to stick to the auxiliary contact piece, that is, the corresponding electromagnet is energized while the arc-shaped top plate is used for detection, so that it generates magnetism and uses the magnetic force of the electromagnet to repel the magnetic block in the corresponding long groove, driving it to perform further detection.

[0027] In summary, the present invention utilizes the arc-shaped top plate to lift up multiple slings in sequence, thereby realizing tension tension testing of multiple slings, and cooperates with the arc-shaped interlocking plate in the arc-shaped top plate to move against the slings, thereby realizing automatic judgment of whether the slings are loose or broken during the retrieval process, without the need for visual inspection by staff, which is more reliable and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic structural diagram of a preferred embodiment provided by the present invention;

[0029] Figure 2 An exploded schematic diagram of a preferred embodiment provided by the present invention;

[0030] Figure 3 for Figure 2 The structural schematic diagram of the bearing disc shown;

[0031] Figure 4 for Figure 1 A schematic diagram of the internal structure of the top seat shown;

[0032] Figure 5 for Figure 3 The structural schematic diagram of A shown;

[0033] Figure 6 for Figure 2 A schematic diagram of the internal structure of the base shown;

[0034] Figure 7 for Figure 6 The structural schematic diagram of B shown;

[0035] Figure 8 for Figure 7 The structural schematic diagram of the sealing plate shown;

[0036] Fig. 9 for Figure 6 Schematic diagram of the structure of the dispersed gas shell shown.

[0037] Numbers in the figure: 1. top seat; 11. connecting arc plate; 12. hanging ear; 2. base; 3. hanging ring; 4. main shaft; 41. bearing plate; 42. arc top plate; 43. matching plate; 44. cable groove; 45. connecting shaft; 46. gear; 47. hydraulic cylinder; 48. rack; 5. built-in plate; 51. slide rod; 52. arc-shaped interlocking plate; 53. back plate; 54. small spring; 55. electromagnet; 56. magnetic block; 57. main contact piece; 58. auxiliary contact piece; 6. alarm; 61. embedded contact piece; 62. alignment contact piece; 7. matching slot; 71. arc cavity; 72. sealing plate; 721. piston; 73. built-in spring; 8. air pump; 81. dispersed air shell; 82. branch pipe; 83. intake valve; 84. solenoid valve. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0039] Please refer to Figures 1 to 9A tower crane lifting safety detection device and method include: a top seat 1, a base 2 is provided below the top seat 1, a plurality of connecting arc plates 11 are fixedly connected between the top seat 1 and the base 2, and the plurality of connecting arc plates 11 are equidistantly arranged in an annular shape, a hanging ring 3 is fixedly connected to the top seat 1, and a plurality of hanging ears 12 are fixedly connected to the lower end seat surface of the top seat 1, and the plurality of hanging ears 12 are equidistantly arranged in an annular shape; an automatic detection mechanism, the automatic detection mechanism includes a main shaft 4, the lower end of the main shaft 4 is rotatably connected to the middle part of the base 2, the upper end of the main shaft 4 is rotatably connected to the middle part of the top seat 1, a bearing disk 41 is fixedly connected to the main shaft 4, an arc-shaped top plate 42 is fixedly connected to the bearing disk 41, a matching disk 43 is provided below the bearing disk 41, the matching disk 43 is fixedly connected to the base 2, a swivel is provided in the middle part of the matching disk 43, the main shaft 4 is rotatably connected to the matching disk 43, a plurality of cable grooves 44 are provided on the base 2, and a driving component is provided between the main shaft 4 and the top seat 1.

[0040] In the specific implementation process, Figure 2 and Figure 3 As shown, both ends of the arc-shaped side of the arc-shaped top plate 42 are concavely arranged, and a plurality of cable grooves 44 are equidistantly arranged in a ring shape, and the plurality of cable grooves 44 are respectively arranged below a plurality of hanging ears 12 .

[0041] It should be noted that the bearing plate 41 drives the arc-shaped top plate 42 to rotate therewith, so that the arc-shaped top plate 42 rotates in turn to press against multiple slings in the cable grooves 44. By using the arc-shaped top plate 42 to lift up multiple slings, multiple slings can be subjected to tension tension tests to ensure that the connection of the slings is sufficiently firm.

[0042] refer to Figure 2 and Figure 4 As shown, the driving assembly includes a connecting shaft 45, which is fixedly connected to the top end of the main shaft 4, and is arranged inside the top seat 1. A gear 46 is fixedly connected to the connecting shaft 45. A mounting opening is provided on the side wall of the top seat 1, and a hydraulic cylinder 47 is installed and connected in the mounting opening. A rack 48 is fixedly connected to the telescopic end of the hydraulic cylinder 47, and the rack 48 is meshed with the gear 46.

[0043] It should be noted that: starting the hydraulic cylinder 47 causes its telescopic end to drive the rack 48 to move, driving the gear 46 meshing with it to rotate, so that it drives the main shaft 4 to rotate relative to the base 2, and the main shaft 4 drives the bearing disk 41 to rotate, so that it drives the arc-shaped top plate 42 to rotate accordingly.

[0044] refer to Figure 3 and Figure 5As shown, a long groove is provided inside the arc-shaped top plate 42, one end of the long groove is fixedly connected to a built-in plate 5, a slide rod 51 is slidably connected to the built-in plate 5, one end of the slide rod 51 is fixedly connected to an arc-shaped interlocking plate 52, the other end of the slide rod 51 is fixedly connected to a back plate 53, a small spring 54 is sleeved on the slide rod 51, one end of the small spring 54 is connected to the back plate 53, and the other end of the small spring 54 is connected to the built-in plate 5.

[0045] It should be noted that: the back plate 53 drives the sliding rod 51 to slide relative to the built-in plate 5, causing the small spring 54 to undergo elastic deformation. One end of the sliding rod 51 drives the arc-shaped interlocking plate 52 to slide, causing the arc-shaped interlocking plate 52 to move against the sling. By extending multiple arc-shaped interlocking plates 52, it is possible to automatically determine whether the sling is loose or broken during the retrieval process.

[0046] refer to Figure 3 and Figure 5 As shown, an electromagnet 55 is installed and connected on the groove wall at the other end of the long groove, a groove is provided on one side of the built-in plate 5, and a magnetic block 56 is installed and connected in the groove. When energized, the magnetic poles of the electromagnet 55 and the magnetic block 56 are the same, and a trigger assembly is provided between the bearing disk 41 and the coordination disk 43.

[0047] It should be noted that the electromagnet 55 generates magnetism when it is energized, and the magnetic force of the electromagnet 55 is used to repel the magnetic block 56 in the corresponding long slot, so that the magnetic block 56 drives the back plate 53 to move accordingly.

[0048] refer to Figure 2 and Figure 3 As shown, the trigger assembly includes a main contact piece 57, which is fixedly mounted on the lower disk surface of the bearing disk 41. The main contact piece 57 is aligned with the arc-shaped top plate 42, and a plurality of auxiliary contact pieces 58 are fixedly mounted on the coordination disk 43. The plurality of auxiliary contact pieces 58 are equidistantly arranged in a ring shape.

[0049] It should be noted that the rotation of the bearing plate 41 drives the main contact piece 57 to rotate along with the arc-shaped interlocking plate 52, and the main contact piece 57 rotates in turn to stick to the auxiliary contact piece 58, thus forming a complete electrical path, so that the corresponding electromagnet 55 is energized to generate magnetism.

[0050] refer to Figure 2 and Figure 5 As shown, an alarm 6 is installed and connected on the side wall of the top seat 1, an embedded contact 61 is installed and connected on the other side plate of the back plate 53, and an alignment contact 62 is installed and connected on one side wall of the long groove, and the embedded contact 61 is aligned with the alignment contact 62.

[0051] It should be noted that if the sling breaks during the detection process, the arc-shaped interlocking plate 52 moves out of the long groove, so that the back plate 53 drives the embedded contact piece 61 to move against the positioning contact piece 62, thereby forming a complete electrical path, so that the alarm 6 works accordingly, reminding the staff that the sling is broken.

[0052] refer to Figure 6 and Figure 7 As shown, a matching slot 7 is provided on one side wall of the plurality of cable grooves 44, a plurality of arcuate cavities 71 are provided inside the base 2, the plurality of arcuate cavities 71 are arranged in an equidistant ring shape, the plurality of arcuate cavities 71 are respectively arranged on the other side of the plurality of cable grooves 44, a closing mechanism is provided in the plurality of arcuate cavities 71, the closing mechanism comprises a closing plate 72, the plurality of closing plates 72 are slidably connected to the cavity wall at one end of the arcuate cavity 71, the other end of the plurality of closing plates 72 is fixedly connected to a piston 721, a built-in spring 73 is provided inside the arcuate cavity 71, one end of the built-in spring 73 is connected to the piston 721, the other end of the built-in spring 73 is connected to the cavity wall of the arcuate cavity 71, and a gas transmission component is provided inside the base 2.

[0053] It should be noted that: the air pressure inside the multiple arc-shaped cavities 71 gradually increases, driving the multiple pistons 721 to push the multiple sealing plates 72 to slide, causing the multiple built-in springs 73 to undergo elastic deformation, and the multiple sealing plates 72 slide out through the cavity wall at one end of the multiple arc-shaped cavities 71, so that one end of the multiple sealing plates 72 slides into the matching slots 7 on one side of the multiple cable grooves 44, and the multiple sealing plates 72 are used to limit and close the multiple slings to ensure that during subsequent inspections, the multiple slings will not slide out of the multiple cable grooves 44.

[0054] refer to Figure 6 and Fig. 9 As shown, the gas delivery component includes an air pump 8, which is fixedly installed inside the base 2. A dispersed gas shell 81 is installed and connected at the gas outlet end of the air pump 8. A plurality of branch pipes 82 are provided on the shell wall of the dispersed gas shell 81. The plurality of branch pipes 82 are equidistantly arranged in an annular shape. An air inlet is provided on the cavity wall at one end of the plurality of arc-shaped cavities 71. One ends of the plurality of branch pipes 82 are respectively connected to the air inlets on the cavity wall of the plurality of arc-shaped cavities 71. An air inlet valve 83 is installed and connected inside the plurality of branch pipes 82. An exhaust port is provided on the cavity wall at one end of the plurality of arc-shaped cavities 71. A solenoid valve 84 is installed and connected in the plurality of exhaust ports.

[0055] It should be noted that: the air pump 8 is started to deliver gas from its outlet end into the interior of the dispersed air shell 81, and then the gas is delivered to the interior of the multiple arc-shaped cavities 71 in one direction through the air inlet valves 83 on the multiple branch pipes 82, so that the air pressure inside the multiple arc-shaped cavities 71 gradually increases;

[0056] By moving the multiple solenoid valves 84 to open state, the multiple built-in springs 73 all restore elastic deformation, so that the air inside the multiple arc-shaped cavities 71 is discharged through the multiple exhaust ports, and the multiple pistons 721 can be driven to drive the multiple sealing plates 72 to move in the opposite direction and reset, so that the multiple cable grooves 44 can be restored to the open state, so as to facilitate the next installation of the sling for inspection.

[0057] This embodiment also discloses a method for detecting the hoisting safety of a tower crane, comprising the following steps:

[0058] S1, sequentially place multiple slings close to multiple sling grooves 44 on the base 2, so that they are hung on the hanging ears 12 on the top seat 1, and perform a pre-lifting test after installing the hooks and the hanging rings 3;

[0059] S2, start the air pump 8 to gradually increase the air pressure inside the multiple arc-shaped cavities 71, drive one end of the multiple sealing plates 72 to slide into the multiple matching slots 7 on the side of the cable slot 44, and use the multiple sealing plates 72 to limit and seal the multiple slings;

[0060] S3, the hydraulic cylinder drives the rack 48 to move, driving the gear meshing with it and the main shaft to drive the bearing plate to rotate, so that the arc-shaped top plate rotates accordingly and rotates in turn to tighten the multiple slings, and the multiple slings are tensioned and tightened. Test;

[0061] S4, the electromagnet 55 is energized to repel the magnetic block 56 in the corresponding long groove, so that the slide bar 51 drives the arc-shaped interlocking plate 52 to move against the sling. By extending multiple arc-shaped interlocking plates 52, it is possible to automatically determine whether the sling is loose or broken during the retrieval process without the need for visual inspection by staff.

[0062] The working principle of the tower crane lifting safety detection device provided by the present invention is as follows: multiple lifting ropes are sequentially placed close to multiple rope grooves 44 on the base 2, so that they are hung on the hanging ears 12 on the top seat 1 respectively, and a pre-lifting test is performed after the hooks and hanging rings 3 are installed.

[0063] Start the air pump 8 to transport gas from its outlet end into the interior of the dispersed air shell 81, and then transport the gas to the interior of the multiple arc-shaped cavities 71 in one direction through the air inlet valves 83 on the multiple branch pipes 82, so that the air pressure inside the multiple arc-shaped cavities 71 gradually increases, driving the multiple pistons 721 to push the multiple sealing plates 72 to slide, so that the multiple built-in springs 73 are elastically deformed, and the multiple sealing plates 72 slide out through the cavity wall at one end of the multiple arc-shaped cavities 71, so that one end of the multiple sealing plates 72 slides into the matching card slots 7 on one side of the multiple cable grooves 44, and the multiple sealing plates 72 are used to limit and close the multiple slings to ensure that during subsequent inspections, the multiple slings will not slide out of the multiple cable grooves 44, so that they can be safely inspected and carried out normally.

[0064] Then, the multiple solenoid valves 84 are started to be in the open state, and the multiple built-in springs 73 all restore their elastic deformation, so that the air inside the multiple arc-shaped cavities 71 is discharged through the multiple exhaust ports, and the multiple pistons 721 can be driven to drive the multiple sealing plates 72 to move in the opposite direction and reset, so that the multiple cable grooves 44 can be restored to the open state, so as to facilitate the next installation of the sling for inspection.

[0065] Start the hydraulic cylinder 47 so that its telescopic end drives the rack 48 to move, driving the gear 46 meshing with it to rotate, so that it drives the main shaft 4 to rotate relative to the base 2, and the main shaft 4 drives the bearing disk 41 to rotate, which drives the arc-shaped top plate 42 to rotate accordingly, so that the arc-shaped top plate 42 rotates in turn to press against multiple slings, and multiple slings are lifted up by the arc-shaped top plate 42, so that multiple slings can be subjected to tension tension tests to ensure that the connection of the slings is firm enough.

[0066] The rotation of the bearing disk 41 drives the main contact piece 57 to rotate along with the arc-shaped interlocking plate 52. The main contact piece 57 rotates in turn to stick to the auxiliary contact piece 58, thus forming a complete electrical path, so that the corresponding electromagnet 55 is energized to generate magnetism, and the magnetic force of the electromagnet 55 is used to repel the magnetic block 56 in the corresponding long groove, so that the magnetic block 56 drives the back plate 53 to move accordingly, and the back plate 53 drives the slide bar 51 to slide relative to the built-in plate 5, so that the small spring 54 undergoes elastic deformation, and one end of the slide bar 51 drives the arc-shaped interlocking plate 52 to slide, so that the arc-shaped interlocking plate 52 moves to resist the sling. By extending multiple arc-shaped interlocking plates 52, it is possible to automatically determine whether the sling is loose or broken during the retrieval process, without the need for visual inspection by staff, which is more reliable and safe.

[0067] If the sling breaks during the detection process, the arc-shaped interlocking plate 52 moves out of the long groove, so that the back plate 53 drives the embedded contact piece 61 to move and press against the positioning contact piece 62, thereby forming a complete electrical path, so that the alarm 6 works accordingly, reminding the staff that the sling is broken and adjusting the problem in time to ensure that the subsequent lifting operation is safer.

[0068] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A tower crane lifting safety detection device, characterized in that: include: A top seat (1), wherein a base (2) is provided below the top seat (1), a plurality of connecting arc plates (11) are fixedly connected between the top seat (1) and the base (2), and the plurality of connecting arc plates (11) are arranged in an equidistant ring shape; a hanging ring (3) is fixedly connected to the top seat (1), and a plurality of hanging ears (12) are fixedly connected to the lower end seat surface of the top seat (1), and the plurality of hanging ears (12) are arranged in an equidistant ring shape; An automatic detection mechanism, the automatic detection mechanism comprising a main shaft (4), the lower end of the main shaft (4) being rotatably connected to the middle part of the base (2), the upper end of the main shaft (4) being rotatably connected to the middle part of the top seat (1), the main shaft (4) being fixedly connected to a bearing disk (41), the bearing disk (41) being fixedly connected to an arc-shaped top plate (42), a matching disk (43) being provided below the bearing disk (41), the matching disk (43) being fixedly connected to the base (2), a rotating port being provided in the middle part of the matching disk (43), the main shaft (4) being rotatably connected to the matching disk (43), a plurality of cable grooves (44) being provided on the base (2), and a driving assembly being provided between the main shaft (4) and the top seat (1); A long groove is provided inside the arc-shaped top plate (42), one end of the long groove is fixedly connected to a built-in plate (5), a slide rod (51) is slidably connected to the built-in plate (5), one end of the slide rod (51) is fixedly connected to an arc-shaped interlocking plate (52), the other end of the slide rod (51) is fixedly connected to a back plate (53), a small spring (54) is sleeved on the slide rod (51), one end of the small spring (54) is connected to the back plate (53), and the other end of the small spring (54) is connected to the built-in plate (5); An electromagnet (55) is mounted and connected to the groove wall at the other end of the long groove, a groove is provided on one side of the built-in plate (5), a magnetic block (56) is mounted and connected in the groove, the magnetic poles of the electromagnet (55) and the magnetic block (56) are the same when energized, and a trigger assembly is provided between the bearing plate (41) and the coordination plate (43); The trigger assembly comprises a main contact piece (57), the main contact piece (57) is fixedly mounted on the lower disk surface of the bearing disk (41), the main contact piece (57) is aligned with the arc-shaped top plate (42), and a plurality of auxiliary contact pieces (58) are fixedly mounted on the coordination disk (43), and the plurality of auxiliary contact pieces (58) are equidistantly arranged in an annular shape.

2. A tower crane lifting safety detection device according to claim 1, characterized in that: Both ends of the arc-shaped side edges of the arc-shaped top plate (42) are concavely arranged, and the plurality of cable grooves (44) are equidistantly arranged in an annular shape. The plurality of cable grooves (44) are respectively arranged below the plurality of hanging ears (12).

3. A tower crane hoisting safety detection device according to claim 1, characterized in that: The driving assembly comprises a connecting shaft (45), the connecting shaft (45) being fixedly connected to the top end of the main shaft (4), the connecting shaft (45) being arranged inside the top seat (1), the connecting shaft (45) being fixedly connected to a gear (46), a mounting opening being arranged on a side wall of the top seat (1), a hydraulic cylinder (47) being mounted and connected in the mounting opening. A rack (48) is fixedly connected to the telescopic end of the hydraulic cylinder (47), the rack (48) being meshed with the gear (46).

4. A tower crane hoisting safety detection device according to claim 1, characterized in that: An alarm (6) is mounted on the side wall of the top seat (1), an embedded contact piece (61) is mounted on the other side surface of the back plate (53), and an alignment contact piece (62) is mounted on the side wall of one side of the long groove, and the embedded contact piece (61) is aligned with the alignment contact piece (62).

5. A tower crane hoisting safety detection device according to claim 1, characterized in that: A matching slot (7) is provided on one side wall of the plurality of cable grooves (44); a plurality of arcuate cavities (71) are provided inside the base (2); the plurality of arcuate cavities (71) are arranged in an equidistant annular shape; the plurality of arcuate cavities (71) are respectively arranged on the other side of the plurality of cable grooves (44); a sealing mechanism is provided in the plurality of arcuate cavities (71); the sealing mechanism comprises a sealing plate (72); the plurality of sealing plates (72) are slidably connected to the cavity wall of one end of the arcuate cavity (71); the other ends of the plurality of sealing plates (72) are fixedly connected to a piston (721); a built-in spring (73) is provided inside the arcuate cavity (71); one end of the built-in spring (73) is connected to the piston (721); the other end of the built-in spring (73) is connected to the cavity wall of the arcuate cavity (71); and a gas transmission component is provided inside the base (2).

6. A tower crane hoisting safety detection device according to claim 5, characterized in that: The gas delivery assembly comprises an air pump (8), the air pump (8) being fixedly mounted inside the base (2), a dispersed gas shell (81) being mounted and connected at the gas outlet end of the air pump (8), a plurality of branch pipes (82) being arranged on the shell wall of the dispersed gas shell (81), the plurality of branch pipes (82) being arranged in an equidistant annular arrangement, an air inlet being arranged on the cavity wall at one end of the plurality of arc-shaped cavities (71), one end of the plurality of branch pipes (82) being respectively connected to the air inlet on the cavity wall of the plurality of arc-shaped cavities (71), an air inlet valve (83) being mounted and connected inside the plurality of branch pipes (82), an exhaust port being arranged on the cavity wall at one end of the plurality of arc-shaped cavities (71), and a solenoid valve (84) being mounted and connected in the plurality of exhaust ports.

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