A C-shaped lifting tool clamping device for lifting a steel column

Abstract

The present invention relates to the technical field of hoisting equipment, and specifically relates to a C-type sling clamping device for steel column hoisting, which includes sling arms hinged at both ends of a bearing main beam. A clamp is fixedly connected to the end of the sling arm. The clamp includes an outer frame, a contact sensor, a first slide plate, a second slide plate and a third slide plate. A gear is rotatably connected inside the outer frame. The second slide plate is fixedly connected with a rack and elastically connected to the outer frame. The rack, the first slide plate and the third slide plate are all meshed with the gear. Active friction belts are rotatably connected to the surfaces of the first slide plate and the third slide plate. A Hall sensor and an elastic telescopic protruding roller are arranged inside the second slide plate, and a magnetic ring corresponding to the Hall sensor is arranged on the surface of the roller; through the rolling of the friction belt, the controlled sliding of the steel column to be hoisted relative to the clamp is used to actively migrate the center of gravity, so as to dynamically adjust the center of gravity. Through the synchronous centering and clamping of the protrusions of the second slide plate, the downward displacement of the steel column is monitored in a targeted manner, and the hydraulic auxiliary hook is triggered to pop out in cooperation to achieve linkage protection.

Description

Technical Field

[0001] This invention relates to the field of hoisting equipment technology, specifically to a C-type lifting clamping device for hoisting steel columns. Background Technology

[0002] In steel structure construction, steel columns, as the main vertical load-bearing components, directly affect the project's progress and quality through their hoisting efficiency and safety.

[0003] In existing technologies, steel columns are lifted and transported using C-shaped spreaders. C-shaped spreaders are widely used in steel plants, ports, warehouses, docks, and other scenarios. They are mostly single spreaders or symmetrical spreaders. Single spreaders often use single clamps on both sides for clamping. During the clamping process, the position of the clamps is manually adjusted to achieve centering. However, this results in poor stability when lifting steel columns. Currently, some lifting devices improve the stability of clamping and lifting by setting spreaders on both sides of the crossbeam.

[0004] However, in some existing equipment, the lifting device usually clamps the steel column directly through the friction of the clamping ends. In this case, the two ends of the steel column are clamped asynchronously, which leads to uneven force. At the same time, since the lifting is usually carried out by cranes, the movement error of the crane before clamping will cause the lifting center of gravity to deviate from the center of the lifting device, resulting in an initial off-center load. This will cause the steel column to sway and tilt, increasing the safety hazards of the lifting. Subsequently, the steel column may slip during the lifting process, affecting construction safety. Summary of the Invention

[0005] The purpose of this invention is to provide a C-type lifting clamping device for steel column hoisting, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a C-type lifting clamping device for steel column hoisting, comprising booms hinged to both ends of a main beam bearing a load, with clamps fixedly connected to the ends of the booms; The fixture includes an outer frame, a contact sensor, a first sliding plate, a second sliding plate, and a third sliding plate. A gear is rotatably connected inside the outer frame. A rack is fixedly connected to the second sliding plate and elastically connected to the outer frame. The rack, the first sliding plate, and the third sliding plate are all meshed with the gear. Active friction belts are rotatably connected to the surfaces of the first and third sliding plates. A Hall sensor and an elastically telescopic protruding roller are installed inside the second sliding plate. A magnetic ring corresponding to the Hall sensor is installed on the surface of the roller.

[0007] Preferably, a lifting ring is fixedly connected at the middle position of the upper end of the main supporting beam, an inclination sensor is fixedly connected in the middle of the main supporting beam, and two symmetrically arranged booms are hinged at both ends of the main supporting beam.

[0008] Preferably, auxiliary hooks are hinged to both sides of the end of the boom away from the main beam, and a hydraulic pump is fixedly connected to the middle of the boom. The hydraulic pump is connected to the auxiliary hooks through a hydraulic pipe.

[0009] Preferably, the first, second, and third slide plates are all slidably connected to the outer frame, a disc spring assembly is provided inside the outer frame, one end of the disc spring assembly is fixedly connected to the outer frame, a contact sensor is fixedly connected to the inner wall of the outer frame, and two symmetrically arranged gears are rotatably connected inside the outer frame.

[0010] Preferably, the first and third slide plates are symmetrically arranged, and both surfaces are provided with toothed grooves that mesh with gears. A drive device is fixedly connected inside both the first and third slide plates, and three rotating rods are rotatably connected inside both the first and third slide plates. Each of the first and third slide plates has one rotating rod that is fixedly connected to the output end of the corresponding drive device. Two sprockets are fixedly connected to the surface of each rotating rod, and the three sprockets in the same plane are meshed and connected by the same chain. Two active friction belts are provided, each sleeved on the surface of the first and third slide plates, and the inner wall of the active friction belt is fixedly connected to two adjacent chains.

[0011] Preferably, a rack is fixedly connected to the surface of the second slide plate, and a contact plate is fixedly connected to the end of the rack. The contact plate is fixedly connected to one end of the disc spring assembly. In the initial state, the disc spring assembly is in a compressed state, and the two sides of the rack are respectively meshed with two gears. The rack is slidably connected to the outer frame.

[0012] Preferably, a sliding cavity is provided on the side of the slide plate away from the rack, a support frame is slidably connected in the sliding cavity, a spring is fixedly connected to one end of the support frame, the other end of the spring is fixedly connected to the inner wall of the sliding cavity, and a Hall sensor is fixedly connected to the side of the support frame.

[0013] Preferably, a magnetic ring is fixedly connected to the side of the roller near the Hall sensor, and a one-way bearing is interference-fitted to the inner wall of the roller, with the inner ring of the one-way bearing fixedly connected to the support frame. Compared with the prior art, the beneficial effects of the present invention are: 1. By driving the active friction belt to roll through the driving device in the clamp, and at the same time using the controlled sliding of the suspended steel column itself relative to the clamp to actively shift the center of gravity, dynamic adjustment of the center of gravity is realized throughout the hoisting process, thereby avoiding the initial sway and dynamic shaking caused by the eccentricity at the beginning of clamping, and improving the stability and safety of hoisting. The protrusion of the second sliding plate enables the first and third clamping plates to be aligned and clamped simultaneously, and a signal is emitted indicating that the clamping is in place. Through the cooperation of the one-way bearing and the Hall sensor, the downward displacement of the steel column can be monitored in a directional manner. This is combined with the triggering of the hydraulic auxiliary hook to pop out, realizing the linkage protection between electronic monitoring and rigid mechanical anti-fall. 3. The rolling of the active friction belt facilitates auxiliary adjustments during installation after hoisting, thereby facilitating subsequent installation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the boom structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the fixture of the present invention; Figure 4 This is a schematic diagram of the tooth groove structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the skateboard of the present invention; Figure 6 This is a schematic diagram of the internal structure of the slide plate II of the present invention; Figure 7 This is a schematic diagram of the roller structure of the present invention.

[0015] In the diagram: 1. Main beam; 11. Lifting ring; 12. Tilt sensor; 2. Boom; 3. Hydraulic pump; 4. Auxiliary hook; 5. Clamp; 51. Contact sensor; 52. Outer frame; 53. Disc spring assembly; 54. Gear; 55. Slide plate one; 551. Drive unit; 552. Rotating rod; 553. Sprocket; 554. Chain; 555. Active friction belt; 556. Tooth groove; 56. Slide plate two; 561. Rack; 562. Contact plate; 563. Sliding cavity; 564. Roller; 565. Hall sensor; 566. Magnetic ring; 567. One-way bearing; 568. Support frame; 569. Spring; 57. Slide plate three. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figures 1-7This invention provides a technical solution: a C-type lifting clamping device for steel column hoisting, comprising booms 2 hinged to both ends of a main beam 1, with clamps 5 fixedly connected to the ends of the booms 2. The booms 2 are shear-type to facilitate clamping by the clamps 5. A lifting ring 11 is fixedly connected at the middle position of the upper end of the main beam 1, which facilitates the connection of hooks to cranes or other equipment, thereby ensuring that the lifting center of gravity coincides with the geometric center of the main beam 1 and reducing initial off-center load. An inclination sensor 12 is fixedly connected to the middle of the main beam 1, which can monitor the levelness of the main beam 1 in real time during the hoisting process, thereby providing feedback signals for leveling. Two booms 2 are symmetrically arranged and hinged to both ends of the main beam 1.

[0018] Auxiliary hooks 4 are hinged to both sides of the end of the boom 2 away from the main beam 1. A hydraulic pump 3 is fixedly connected to the middle of the boom 2. The hydraulic pump 3 is connected to the auxiliary hooks 4 through hydraulic pipes. The hydraulic pump 3 can drive the hydraulic oil in the hydraulic pipes to flow, thereby pushing the auxiliary hooks 4 to rotate and contact the bottom side of the steel column, thus forming a rigid anti-fall protection.

[0019] The clamp 5 includes an outer frame 52, a contact sensor 51, a first sliding plate 55, a second sliding plate 56, and a third sliding plate 57. All three sliding plates are slidably connected to the outer frame 52. A disc spring assembly 53 is installed inside the outer frame 52, providing initial preload to the second sliding plate 56. Initially, the second sliding plate 56 protrudes beyond the first and third sliding plates 57. One end of the disc spring assembly 53 is fixedly connected to the outer frame 52, and the other end is fixedly connected to a contact plate 562. Initially, the disc spring assembly 53 is in a compressed state. A contact sensor 51 is fixedly connected to the inner wall of the outer frame 52. When the contact plate 562 contacts the contact sensor 51, it can be determined whether the clamping is in place. Two symmetrically arranged gears 54 are rotatably connected inside the outer frame 52. Slide 1 55 and slide 3 57 are symmetrically arranged, and both have opposing toothed grooves 556 on their surfaces. The toothed grooves 556 mesh with the gears 54. When the gears 54 rotate, they can drive the meshing toothed grooves 556 to slide. A drive device 551 is fixedly connected inside slide 1 55 and slide 3 57. The drive device 551 can be a high-voltage bearing motor. Three rotating rods 552 are rotatably connected inside slide 1 55 and slide 3 57. Each slide 1 55 and slide 3 57 has one rotating rod 552 fixedly connected to the output end of the corresponding drive device 551. Two sprockets 553 are fixedly connected to the surface of each rotating rod 552. The three sprockets 553 in the same plane are meshed and connected by the same chain 554. When the rotating rod 552 rotates, it can drive the chain 554 to rotate through the sprockets 553. The chain 554 is triangular in shape under the support of the rotating rod 552. Two active friction belts 555 are provided, each sleeved on the surfaces of slide plate one 55 and slide plate three 57. The inner wall of the active friction belt 555 is fixedly connected to the surfaces of two adjacent chains 554. At this time, the drive device 551 drives the rotating rod 552 to rotate, and the rotating rod 552 drives the active friction belt 555 to roll through the sprocket 553. The active friction belt 555 is a flexible transmission belt with a high coefficient of friction and direct contact with the surface of the steel column. When all the active friction belts 555 in the device roll synchronously, they can drive the steel column to move horizontally, thereby adjusting the overall center of gravity. The back of the contact surface between the active friction belt 555 and the steel column is in close contact with slide plate one 55, thereby preventing the active friction belt 555 from bending and deforming.

[0020] A rack 561 is fixedly connected to the surface of slide plate 2 56. Since slide plate 2 56 protrudes from slide plate 1 55 and slide plate 3 57, during clamping, slide plate 2 56 will first contact the steel column, thus sliding inwards towards the outer frame 52 under pressure. A contact plate 562 is fixedly connected to the end of rack 561. When slide plate 2 56 slides inwards, rack 561 and contact plate 562 will slide accordingly, further compressing disc spring assembly 53. Two gears 54 are meshed on both sides of rack 561. Rack 561 is slidably connected to outer frame 52. When slide plate 2 56 slides, it can drive gears 54 to rotate through rack 561. At this time, slide plate 1 55 and slide plate 3 57 can slide in the opposite direction synchronously with slide plate 2 56. A sliding cavity 563 is provided on the side of the slide plate 56 away from the rack 561. A support frame 568 is slidably connected inside the sliding cavity 563. A spring 569 is fixedly connected to one end of the support frame 568, and the other end of the spring 569 is fixedly connected to the inner wall of the sliding cavity 563. The spring 569 provides power for the support frame 568 to return to its original position. A roller 564 is rotatably connected to the front end of the support frame 568, and a Hall sensor 565 is fixedly connected to its side.

[0021] The arc surface of roller 564 is made of a high-friction coefficient material. A magnetic ring 566 is fixedly connected to the side of roller 564 near the Hall sensor 565. When roller 564 rotates, magnetic ring 566 rotates accordingly, and Hall sensor 565 can detect the rotation angle. A one-way bearing 567 is interference-fitted to the inner wall of roller 564. The outer wall of one-way bearing 567 is fixedly connected to roller 564, and the inner ring of one-way bearing 567 is fixedly connected to support frame 568. In this configuration, roller 564 can only rotate in one direction: when roller 564 is in close contact with the surface of the steel column, during normal hoisting, the steel column will only slide down under gravity, and this sliding motion will drive roller 564 to rotate. When the steel column vibrates, the one-way bearing 567 will prevent roller 564 from rotating repeatedly, thus achieving vibration filtering.

[0022] In actual use, cranes and other equipment hook onto the lifting ring 11 via hooks, and the entire system is in its initial state, with slide plate 2 56 protruding from slide plate 1 55 and slide plate 3 57, and roller 564 protruding from the surface of slide plate 2 56. The operator lowers the device using the lifting equipment, aligning the centers of the clamp openings 5 ​​of the two booms 2 with the steel column. Then, the booms 2 can begin to retract and clamp the steel column. During clamping, the side of the steel column will preferentially press against roller 564, causing it to slide inwards from the clamp 5 and compress spring 569. Subsequently, the steel column contacts slide plate 2 56, driving it to slide inwards from the clamp 5. During this process, slide plate 2 56 drives the rack 561 on its back to slide synchronously, compressing disc spring assembly 53 and driving the gears 54 on both sides to rotate. The gears 54 then cause slide plate 1 55 and slide plate 3 57 to extend in opposite directions. When the contact plate 562 triggers the contact sensor 51, the three slide plates 55, 56, and 57 are in the same vertical plane and in close contact with the surface of the steel column. When all the contact sensors 51 are in the triggered state, the controller installed in the main beam 1 sends a signal to the workers to indicate that the clamping is in place, and then the subsequent lifting and hoisting operations can be carried out.

[0023] As the crane's main hook begins to rise, under the weight of the steel column, the boom 2 and clamp 5 further increase the clamping force through frictional self-locking. Once the entire steel column is clamped off the ground, the tilt sensor 12 begins to monitor the tilt angle of the supporting main beam 1 in real time. If the overall tilt angle is detected to be greater than the preset range, the controller immediately and synchronously drives all drive devices 551 to rotate, driving the active friction belt 555 to rotate via the sprocket 553, moving it towards the lower end of the steel column by friction. At this time, since the positions of the crane and the lifting ring 11 are relatively fixed, the steel column can be moved to slide relative to each other, thereby adjusting the overall center of gravity. During this process, the tilt sensor 12 continuously feeds back data until the tilt angle returns to the preset range. Meanwhile, during the hoisting and adjustment process, the Hall sensor 565 works throughout. When the steel column slips, it will drive the roller 564 to rotate, which in turn drives the magnetic ring 566 to rotate. At this time, the Hall sensor 565 can monitor the rotation angle of the magnetic ring 566. When the rotation angle is within the threshold, it is judged as normal micro-motion. When the Hall sensor 565 detects that the rotation angle of the magnetic ring 566 exceeds the threshold, the hydraulic pump 3 starts instantly and pushes the auxiliary hook 4 to rotate and pop out through the hydraulic oil, thereby rigidly supporting the bottom of the steel column and preventing the steel column from falling.

[0024] When the steel column is hoisted to the designated position, the tilt sensor 12 stops operating, and the operator directly controls the rotation direction of the drive device 551, thus avoiding manual adjustment of the installation angle and position of the steel column during installation. By controlling the rolling of the active friction belt 555 through the drive device 551, the steel column can be easily adjusted, thereby achieving precise alignment of the bolt holes and other positions of the steel column during installation, reducing labor and improving operational safety.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A C-type lifting clamping device for hoisting steel columns, characterized in that: Includes booms (2) hinged to both ends of the main beam (1), with clamps (5) fixedly connected to the ends of the booms (2); The fixture (5) includes an outer frame (52), a contact sensor (51), a first slide (55), a second slide (56), and a third slide (57). A gear (54) is rotatably connected inside the outer frame (52). A rack (561) is fixedly connected to the second slide (56) and elastically connected to the outer frame (52). The rack (561), the first slide (55), and the third slide (57) are all meshed with the gear (54). An active friction belt (555) is rotatably connected to the surfaces of the first slide (55) and the third slide (57). A Hall sensor (565) and an elastically telescopic protruding roller (564) are provided inside the second slide (56). A magnetic ring (566) corresponding to the Hall sensor (565) is provided on the surface of the roller (564).

2. The C-type lifting clamping device for steel column hoisting according to claim 1, characterized in that: A lifting ring (11) is fixedly connected at the middle position of the upper end of the main beam (1), an angle sensor (12) is fixedly connected in the middle of the main beam (1), and two symmetrically arranged booms (2) are hinged at both ends of the main beam (1).

3. The C-type lifting clamping device for steel column hoisting according to claim 1, characterized in that: The boom (2) has auxiliary hooks (4) hinged on both sides of the end away from the main beam (1). A hydraulic pump (3) is fixedly connected to the middle of the boom (2). The hydraulic pump (3) is connected to the auxiliary hook (4) through a hydraulic pipe.

4. A C-type lifting clamping device for steel column hoisting according to claim 3, characterized in that: The first slide (55), the second slide (56) and the third slide (57) are all slidably connected to the outer frame (52). A disc spring assembly (53) is provided inside the outer frame (52). One end of the disc spring assembly (53) is fixedly connected to the outer frame (52). A contact sensor (51) is fixedly connected to the inner wall of the outer frame (52). Two symmetrically arranged gears (54) are rotatably connected inside the outer frame (52).

5. A C-type lifting clamping device for steel column hoisting according to claim 4, characterized in that: The first slide (55) and the third slide (57) are symmetrically arranged, and both of them have toothed grooves (556) on their surfaces. The toothed grooves (556) are meshed with gears (54). Both the first slide (55) and the third slide (57) are fixedly connected to a drive device (551). Both the first slide (55) and the third slide (57) are rotatably connected to three rotating rods (552). Each of the first slide (55) and the third slide (57) has a rotating rod (552) that is fixedly connected to the output end of the corresponding drive device (551). Each rotating rod (552) has two sprockets (553) fixedly connected to its surface. The three sprockets (553) in the same plane are meshed with the same chain (554). There are two active friction belts (555), each sleeved on the surface of the first slide (55) and the third slide (57). The inner wall of the active friction belt (555) is fixedly connected to two adjacent chains (554).

6. A C-type lifting clamping device for steel column hoisting according to claim 5, characterized in that: A rack (561) is fixedly connected to the surface of the second slide plate (56). A contact plate (562) is fixedly connected to the end of the rack (561). The contact plate (562) is fixedly connected to one end of the disc spring assembly (53). In the initial state, the disc spring assembly (53) is in a compressed state. The two sides of the rack (561) are respectively meshed with two gears (54). The rack (561) is slidably connected to the outer frame (52).

7. A C-type lifting clamping device for steel column hoisting according to claim 6, characterized in that: The sliding cavity (563) is provided on the side of the slide plate (56) away from the rack (561). A support frame (568) is slidably connected inside the sliding cavity (563). A spring (569) is fixedly connected to one end of the support frame (568). The other end of the spring (569) is fixedly connected to the inner wall of the sliding cavity (563). A Hall sensor (565) is fixedly connected to the side of the support frame (568).

8. A C-type lifting clamping device for steel column hoisting according to claim 7, characterized in that: A magnetic ring (566) is fixedly connected to the side of the roller (564) near the Hall sensor (565). A one-way bearing (567) is interference-fitted to the inner wall of the roller (564). The inner ring of the one-way bearing (567) is fixedly connected to the support frame (568).

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