Remote control type I-shaped steel beam lifting appliance

Abstract

The invention discloses a remote control type I-shaped steel beam lifting appliance, and relates to the technical field of hoisting. The problems that the labor intensity is high and the operation risk is high when an I-shaped steel beam sling is manually dismantled at high altitude are solved. The device comprises a driving mechanism, a clamping mechanism, a control mechanism, an anti-torsion mechanism and a remote controller, a motor of the driving mechanism is meshed with a driven gear of the clamping mechanism through a driving gear so as to drive a bidirectional screw rod to rotate; the two-way screw rod is in threaded connection with the screw rod cross beams on the left clamping jaw and the right clamping jaw, and rotary motion is converted into opening and closing motion of the clamping jaws so as to clamp or loosen the I-shaped steel beam; and the anti-torsion mechanism is adsorbed on the I-shaped steel beam through a guide shaft below the linear bearing mounting plate and a strong magnet at the bottom, so that the lifting appliance is prevented from being twisted when being loosened. The technical scheme is used for remote control hoisting and automatic separation of the I-shaped steel beam, ground remote operation of high-altitude operation is achieved, the labor intensity of operators is effectively relieved, and safety and operation efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hoisting and lifting, in particular to a remote control type I-beam hoist. BACKGROUND

[0002] I-beams are widely used in steel structure buildings, and are usually hoisted by directly binding steel wire ropes and shackles on the I-beams. After hoisting and positioning, the shackles are manually removed by climbing to the middle of the I-beam, and the hoisting harness is separated and taken out.

[0003] After the horizontal beams and vertical columns of the steel structure building are positioned and connected, the shackles and hoisting harnesses on the I-beam are usually at a high height from the ground. In order to remove the shackles and steel wire ropes, the construction personnel usually need to climb from both ends of the I-beam to the middle part, and then manually remove them. The I-beam is usually narrow in width and long in span, and the manual removal operation at a high altitude not only has high labor intensity and low operation efficiency, but also has high safety risks.

[0004] At present, I-beam hoists are divided into two forms of profiled hoists and jaw hoists in structure. The profiled hoist uses two horizontal clamping jaws to clamp the two sides of the I-beam flange, and cooperates with the top connecting plate to be fixed by bolt connection. The I-beam hoist of this structure has poor adaptability, and one hoist can only be used for one size of I-beam. When removed, the fixed bolts still need to be manually unscrewed, and the clamping jaws need to be taken out. The jaw hoist uses two jaws to close and clamp the I-beam, a connecting block is arranged in the jaw, the arc surface of the connecting block is threaded with a double screw rod, and the two jaws are tightened and fixed by screwing the screw rod. The I-beam hoist of this structure still needs manual operation for locking and opening, and there is still a high safety risk for the work of removing the hoisting harness of the I-beam hoist at a high altitude.

[0005] In order to solve the practical difficulties of hoisting and installing the I-beam of the steel structure, especially the high-altitude removal of shackles and steel wire ropes, it is necessary to design a special I-beam hoist that can be remotely controlled to remove. SUMMARY

[0006] The technical problem to be solved and the technical task proposed by the present application are to perfect and improve the existing technical solutions, provide an I-beam hoist that can be remotely controlled to open and clamp, so as to reduce the labor intensity of construction, reduce the operation risk, save the hoisting operation time, and improve the construction production efficiency, so as to effectively improve the convenience and safety of removing the I-beam hoist. In order to achieve the above purpose, the present application adopts the following technical scheme.

[0007] A remote control type I-beam hoist, characterized in that: it comprises a driving mechanism, a clamping mechanism, a control mechanism, an anti-twisting mechanism and a remote controller for wirelessly controlling the driving mechanism to act; the driving mechanism is connected with the clamping mechanism to drive the clamping mechanism to act; The driving mechanism comprises a motor, a driving gear connected with an output shaft of the motor; The clamping mechanism comprises a driven gear engaged with the driving mechanism, a bidirectional screw driven to rotate by the driven gear (221), and two clamping jaws symmetrically arranged on the left and right, wherein a screw rod beam is arranged on the clamping jaws, and the two ends of the bidirectional screw are threadedly connected with the screw rod beams on the two clamping jaws; The anti-twist mechanism comprises a linear bearing mounting plate connected with the clamping mechanism, linear bearings vertically arranged at the two ends of the linear bearing mounting plate, a guide shaft inserted in the linear bearings, springs arranged between the guide shaft and the linear bearings, and strong magnets fixed at the bottom of the guide shaft; the length direction of the linear bearing mounting plate is perpendicular to the bidirectional screw.

[0008] The rotation of the bidirectional screw drives the screw rod beam to move along the axial direction of the bidirectional screw, thereby driving the deflection of the two clamping jaws to clamp or loosen the I-beam; when the clamping jaws are in the clamped state, the bidirectional screw and the screw rod beam are threadedly locked; the thread locking design between the bidirectional screw and the screw rod beam makes the clamping more firm and less likely to loosen when the clamping jaws are in the clamped state, thereby enhancing the load-carrying capacity and stability of the clamping jaws clamping the I-beam.

[0009] The remote control is used to control the loosening and clamping actions of the lifting device, so that the construction personnel can operate without directly contacting the lifting device, which is particularly suitable for high-altitude, long-distance or other inconvenient direct contact operation occasions. Using a motor as a driving device, the loosening and clamping actions of the lifting device clamping jaws can be automatically completed, reducing the high intensity and high risk problems of manual operation, making the use of the lifting device more efficient and reliable. The clamping mechanism realizes the synchronous movement of the screw rod beam along the axial direction of the bidirectional screw through the engagement of the driving member and the driven member and the rotation of the bidirectional screw, thereby driving the opening and closing of the clamping jaws fixed with the screw rod beam, realizing the loosening and clamping of the lifting device on the I-beam, which not only has a compact structure, but also can ensure the stability and reliability of the lifting device during loosening and clamping.

[0010] The I-shaped beam special lifting appliance realizes automatic control through remote operation, so that the lifting appliance device on high altitude or difficult to reach directly can be automatically separated from the hoisted object. Not only the burden of the operating personnel climbing operation is reduced, but also the safety risk of high altitude operation is avoided. Traditionally, the operating personnel need to manually climb and perform heavy and dangerous labor such as unhooking and removing the lifting appliance. The application of the lifting appliance completely changes this situation, making these originally labor-intensive tasks easy and simple, greatly reducing the physical burden of the operating personnel. High-altitude operation and direct operation to remove the lifting appliance both have high safety risks. The remote operation and automatic control function of the remote control type I-shaped beam lifting appliance effectively reduces the time of operating personnel exposed to dangerous environments and reduces the risk of accidents caused by human operation errors or environmental factors, thereby improving the safety of the overall operation. The characteristics of automation and remote control enable the lifting appliance to quickly respond to operation instructions and complete the removal of the I-shaped beam lifting appliance. Compared with the traditional manual operation method, this greatly saves the operation time and improves the construction efficiency. Since the lifting appliance can significantly reduce labor intensity, reduce operation risk and save operation time, it can directly improve construction production efficiency, and the construction team can complete the lifting task faster, reduce the time wasted due to waiting or handling safety problems, and thus speed up the engineering progress. The design of the lifting appliance fully considers the needs in actual construction, making the removal process of the lifting appliance more convenient and fast, and its automation and remote control function further enhances the safety of the removal process, providing more reliable protection for the construction team.

[0011] The driving member can be a gear or a worm gear to realize the driving function.

[0012] The strong magnet at the bottom of the guide shaft tightly adsorbs the guide shaft on the I-beam, and when the I-beam is in place, the clamping jaw is loosened, the relative position of the clamping jaw and the I-beam is kept, and after the clamping jaw is loosened, the clamping jaw is prevented from being twisted and hung on the I-beam, so that the lifting appliance cannot be smoothly separated. After the lifting appliance is separated from the I-beam, the guide shaft will be reset due to the spring effect. The relative position of the clamping jaw and the I-beam is kept when the clamping jaw is loosened, so that the lifting appliance is separated more safely and reliably, the structure occupies small space, runs smoothly, is easy to install, uses standard parts, and is convenient to maintain and replace. The length direction of the linear bearing mounting plate is perpendicular to the double screw rod, and the linear bearing and the guide shaft are mounted at both ends of the linear bearing mounting plate, so that the line between the two guide shafts is perpendicular to the axis of the double screw rod and the distance (force arm) is maximized; when the lifting appliance has a twisting trend around the double screw rod due to the load, the mechanism can form a couple of forces on one side and a couple of forces on the other side, so as to balance the twisting moment with the maximum force arm, thereby greatly enhancing the stability and reliability of the anti-twisting. The symmetrical double-point support structure makes the anti-twisting force uniformly act on both sides of the base, thereby improving the structural stability and service life of the whole lifting appliance. Each guide shaft is provided with an independent spring, so that the strong magnets at both ends can move up and down independently. Even if the flange top surface of the I-beam is slightly inclined or uneven, the two strong magnets can be tightly adsorbed at the same time under the action of the spring, so as to ensure that the anti-twisting effect is not compromised.

[0013] As a preferred technical means: the driving mechanism further comprises a motor mounting bracket, the motor is arranged on the motor mounting bracket, the output shaft of the motor extends out of the motor mounting bracket, the output shaft is connected with a driving gear as a driving member, and the driving gear is engaged with a driven gear as a driven member; the clamping mechanism base is arranged below the motor mounting bracket.

[0014] As a preferred technical means: the clamping mechanism further comprises a base, a slot is formed in the middle of the base for engagement of the driving gear and the driven gear, the driven gear is arranged at the middle position of the double screw rod, a bearing mounting base is arranged in the base, and the double screw rod is inserted into the bearing.

[0015] The base can be used to support the motor mounting bracket. The bearings are arranged in the two end bases of the base, the double screw rod is arranged in the base through the bearings, and the middle part of the base is slotted. The driven gear is engaged with the driving gear through the slotted part of the base, and the driven gear is fixed at the middle position of the double screw rod.

[0016] As a preferred technical means: the clamping mechanism further comprises a clamping jaw part, a single clamping jaw is composed of two clamping pieces, the two clamping pieces are fixed through a shaft sleeve and a rivet, the lead screw cross beam is fixed between the two clamping pieces, the two clamping jaws are connected through a top lifting ring interval sleeve, and the left and right clamping jaws can rotate around the axis of the lifting ring interval sleeve.

[0017] The screw rod crossbeam is located between the two pieces of the grab piece, and can be used to fix the front and rear two pieces of the grab piece. The middle part of the screw rod crossbeam is provided with a threaded hole. The bidirectional screw rod rotation drives the screw rod crossbeam to move horizontally, and the screw rod crossbeam drives the grab jaw to deflect. The screw rod crossbeam serves as a connecting intermediate part, converts the rotary motion into linear motion, has the advantages of compact structure, smooth operation, high moving precision and stability, and improves the reliability of the whole transmission mechanism.

[0018] The unilateral grab jaw is fixed and combined by two pieces of the grab piece through the shaft sleeve, and the grab piece and the shaft sleeve are fixed by rivets. The left and right two grab jaws are connected by the lifting ring interval sleeve at the top, and the grab piece and the lifting ring interval sleeve are fixed by rivets. The lifting ring interval sleeve is provided with a circular arc groove in the middle, which is used for passing through the steel wire rope. The grab jaw is fixedly connected with the anti-twisting mechanism through the base.

[0019] The unilateral grab jaw is fixed and combined by two pieces of the grab piece, and the actuator is placed in the middle. The overall structure design is compact and has high integration, which can effectively protect the actuator components from external damage. The design of the front and rear two pieces of the unilateral grab jaw can increase the clamping points of the I-beam, prevent the single-point clamping problem, and avoid the safety risk of the grab jaw and the I-beam falling off.

[0020] As a preferred technical means: the outer side of the grab piece is arc-shaped, the inner side bottom is provided with an upwardly inclined U-shaped groove, the bottom of the U-shaped groove is provided with an arc-shaped protrusion, and the two sides of the arc-shaped protrusion are inner concave arc transition edges; the U-shaped groove is used for clamping the flange of the I-beam, and the top is provided with a hole for inserting the lifting ring interval sleeve; the middle part of the lifting ring interval sleeve is an arc-shaped groove for passing through the steel wire rope. The grab piece is provided with a hole for passing through the shaft sleeve, the unilateral front and rear two pieces of the grab piece are fixed by the shaft sleeve, and the left and right two grab jaws are connected by the lifting ring interval sleeve.

[0021] The arc-shaped grab piece design helps to avoid stress concentration effect when the grab piece is stressed, and the structure design is more reasonable. The I-beam flange is clamped by the upwardly inclined U-shaped groove, which can effectively clamp the I-beam, and the grab jaw and the I-beam are not easy to slip, preventing the I-beam from falling off during the transfer process. The arc-shaped protrusion and the two inner concave arc transition edges can evenly distribute the stress generated by the load to the whole grab piece, rather than concentrating on the local corners, reducing the risk of cracking and deformation of the grab piece caused by long-term stress or impact load, prolonging the service life of the grab piece, ensuring the stability of the grab piece structure during hoisting, avoiding safety hazards caused by structural failure, preventing cracks at the transition edge of the grab piece after long-term use, prolonging the structural life of the grab piece, ensuring the reliability of long-term hoisting, and preventing the I-beam flange from being stuck.

[0022] As a preferred technical means: the control mechanism includes a control box mounting bracket, a control box mounted on the control box mounting bracket, a controller and a battery are arranged in the control box, the left side of the control box is a sensor mounting bracket, two hall proximity switch sensors are mounted on the sensor mounting bracket through a sensor fixing nut, and an induction magnet for triggering the hall proximity switch sensor is mounted at the end of the bidirectional screw rod.

[0023] The remote control receiver, the motor controller and the battery are integrated in the control box, external wiring is reduced, the entire control mechanism is more compact and neat, the control box is closed, damage of the precise elements of the control mechanism by the external environment such as rain and dust is avoided, and the reliable and normal operation of the control mechanism is ensured. All key components are concentrated in a unit, maintenance and replacement are facilitated, and maintenance cost and time are reduced. The built-in battery provides power for the remote control receiver and the motor controller, external power supply is not needed, and the independence and mobility of the equipment are enhanced.

[0024] As a preferred technical means: the controller is provided with a remote control signal receiving module and a motor control module, the remote control signal receiving module is connected with the remote controller through wireless communication, the motor control module receives signals of the remote controller and the sensor, and then controls the on-off of the motor by the battery.

[0025] As a preferred technical means: the sensor mounting bracket is mounted on the screw rod cross beam and moves synchronously with the screw rod cross beam, the sensor mounting bracket is slotted along the axis direction of the bidirectional screw rod, and the mounting position of the hall proximity switch sensor is adjusted, when the clamping mechanism is in the clamping state of the I-shaped steel beam, the position directly above the induction magnet mounted at the end of the bidirectional screw rod is the mounting position of the outer hall proximity switch sensor, and when the clamping mechanism is in the releasing state of the I-shaped steel beam, the position directly above the induction magnet mounted at the end of the bidirectional screw rod is the mounting position of the inner hall proximity switch sensor.

[0026] The hall proximity switch sensor can obtain the state of the clamping jaw, when the clamping jaw is in the clamping state, the outer hall proximity switch sensor 1 is directly above the induction magnet, at this time, the outer hall proximity switch sensor 1 is triggered to send a signal, the motor controller turns off the motor power, prevents the operator from continuing to remotely control the motor to rotate, and prevents the damage of the screw thread on the bidirectional screw rod and the screw rod cross beam, avoids the gear tooth and the motor heating problem. When the clamping jaw slowly opens and the screw rod cross beam moves outward, the outer hall proximity switch sensor 1 moves away from the induction magnet, and the inner hall proximity switch sensor 2 approaches the magnet, when the inner hall proximity switch sensor 2 moves to the position directly above the induction magnet, the inner hall proximity switch sensor 2 is triggered to send a signal, at this time, the clamping jaw is in the releasing state, the motor power is turned off, and the operator is prevented from continuing to remotely control the motor to rotate, so that the screw rod cross beam is prevented from slipping off the bidirectional screw rod. The sensor can obtain the state of the lifting appliance, and the safety of the automatic removal of the lifting appliance is ensured.

[0027] The groove direction of the sensor mounting bracket limiting groove is parallel to the axial direction of the bidirectional screw rod, and the cross-sectional width of the I-beam is different for different models, and the angle of the two clamping jaws changes with the cross-sectional width of the I-beam when the clamping jaws are clamped. At this time, the positions of the Hall proximity switch sensors 1 and 2 need to be adjusted so that they can correctly act when the clamping jaws are loosened or clamped. The sensor position can be flexibly adjusted by the method of installing the sensor through the groove of the sensor bracket, so that the spreader can clamp I-beams of different models, and the adaptability and flexibility of the spreader are improved.

[0028] As a preferred technical means: the linear bearing mounting plate is fixed below the base, the linear bearing is arranged on the outer side of the linear bearing mounting plate of the base, the top of the guide shaft is provided with a limiting ring, and the spring is located between the limiting ring and the linear bearing mounting plate.

[0029] The linear bearing mounting plate is fixed below the base, so that the whole anti-twisting mechanism is embedded in the spreader main body structure and does not occupy additional space. Compared with single bearing or single point support, the arrangement of linear bearings on both sides can effectively resist the rotating torque generated when the spreader works, prevent the mechanism from shaking itself, and ensure the reliability of anti-twisting. The design that the spring is located between the limiting ring and the linear bearing mounting plate enables the guide shaft to continue to compress the spring after the strong magnet contacts the surface of the I-beam, can compensate for the unevenness or slight inclination of the surface of the I-beam flange, and ensures that the bottom surface of the strong magnet can be tightly adsorbed at all times. At the same time, the buffering effect of the spring can absorb the slight impact generated in the lifting process, and protect the magnet and the workpiece surface.

[0030] As a preferred technical means: the left and right threaded segments of the bidirectional screw rod are opposite threads, and the middle is a cylindrical segment, and a raised shoulder is arranged at the intersection of the threaded segment and the cylindrical segment.

[0031] The left and right threaded segments of the bidirectional screw rod are opposite threads, and the middle is a cylindrical segment, and a raised shoulder is arranged at the intersection of the threaded segment and the cylindrical segment. The bidirectional screw rod is connected with the screw rod cross beam of the two clamping jaws through threads. The design of opposite threads on the left and right sides can realize that the bidirectional screw rod drives the left and right clamping jaws to deflect to the middle at the same time when rotating, and completes the clamping action of the spreader on the I-beam. When the bidirectional screw rod reverses, it can simultaneously drive the left and right clamping jaws to deflect to both sides, and complete the loosening action of the spreader on the I-beam. The middle cylindrical segment is used for installing bearings and driven gears, and the shoulder design has a limiting function, which prevents the clamping jaws from continuously closing due to misoperation of the operator and damages the mechanical parts.

[0032] In summary, the beneficial effects of the present application are: The I-shaped steel beam lifting appliance in the application can realize remote control operation, so that the lifting appliance automatically separates from the hoisted object in the air, avoids manual high-altitude dismounting of the lifting cable, significantly reduces the construction labor intensity, reduces the operation risk, saves the hoisting operation time, improves the construction production efficiency, effectively improves the convenience and safety of dismounting of the lifting appliance device, and can be applied to different models of I-shaped steel beams, thereby improving the universality of the I-shaped steel beam lifting appliance. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a state schematic diagram for lifting of the I-shaped steel beam according to the application; Figure 2 is a state schematic diagram for clamping of the I-shaped steel beam by the I-shaped steel beam lifting appliance according to the application; Figure 3 is a state schematic diagram for loosening of the I-shaped steel beam by the I-shaped steel beam lifting appliance according to the application; Figure 4 is a structure schematic diagram of the remote control type I-shaped steel beam lifting appliance according to the application; Figure 5 is a structure schematic diagram of the driving mechanism according to the application; Figure 6 is a structure schematic diagram of the clamping mechanism according to the application; Figure 7 is a structure schematic diagram of the control mechanism according to the application; Figure 8 is a structure schematic diagram of the anti-twisting mechanism according to the application.

[0034] BRIEF DESCRIPTION OF DRAWINGS 1, I-shaped steel beam; 21, driving mechanism; 22, clamping mechanism; 23, control mechanism; 24, anti-twisting mechanism; 211, motor; 212, driving gear; 213, motor mounting bracket; 221, driven gear; 222, base; 223, bidirectional screw rod; 224, bearing; 225, lifting ring spacing sleeve; 226, gripping piece; 227, screw rod cross beam; 228, shaft sleeve; 229, rivet; 231, control box mounting bracket; 232, control box; 233, controller; 234, battery; 235, sensor mounting bracket; 236, Hall proximity switch sensor; 237, sensor fixing nut; 238, inductive magnet; 241, linear bearing mounting plate; 242, linear bearing; 243, guide shaft; 244, spring; 245, strong magnet; 3, lifting hook; 4, steel wire rope. DETAILED DESCRIPTION

[0035] For the purposes of the present application, the technical solutions and advantages will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0036] Embodiment one: Please refer to Figures 1-8 In the embodiment, a remote control I-shaped beam hoist is provided, which comprises a driving mechanism 21, a clamping mechanism 22, a control mechanism 23, an anti-twist mechanism 24, and a remote controller. The driving mechanism 21 is engaged with the driven gear of the clamping mechanism 22 through a gear, and is arranged inside the clamping mechanism. Meanwhile, the remote controller is connected with the driving mechanism through wireless signals and controls the driving mechanism to open and close the clamping jaws on both sides of the clamping mechanism. After the remote controller sends a signal, the driving mechanism is started, which drives the bidirectional screw rod 223 of the clamping mechanism to rotate, drives the lead screw cross beam 227 to move axially through the left and right threads of the bidirectional screw rod, and then the clamping mechanism can clamp or loosen the I-shaped beam 1, without manual operation, which is automatic, efficient and convenient.

[0037] Specifically, the driving mechanism comprises a motor mounting bracket 213, a motor 211 is arranged on the motor mounting bracket 213, a driving gear 212 is mounted on the output shaft of the motor 211, and the driving gear 212 is engaged with the driven gear 221 of the clamping mechanism 22, which can drive the clamping jaws of the clamping mechanism 22 to rotate, so as to realize the folding and clamping or loosening of the I-shaped beam 1. Meanwhile, the bottom of the motor mounting bracket 213 is fixedly connected with the base 222 of the clamping mechanism 22.

[0038] The clamping mechanism 22 comprises a base 222, wherein a middle part is slotted for engagement of the driven gear 221 with the driving gear 212, and both ends are provided with bearing 224 mounting bases, in which bidirectional screw rods 223 are inserted, wherein the middle part is a cylindrical segment, and the left and right parts are threaded segments. The driven gear 221 is fixed at the middle position of the cylindrical segment of the bidirectional screw rod 223. When the control motor 211 is started, the driving gear 212 drives the driven gear 221, which makes the bidirectional screw rod 223 rotate, and the threads on the bidirectional screw rod 223 rotate, thereby driving the screw rod cross beams 227 in the two clamping jaws to move synchronously outward along the axis of the bidirectional screw rod 223, controlling the two clamping jaws to deflect outward, and realizing the action of loosening the I-beam. Conversely, the screw rod cross beams 227 in the two clamping jaws move synchronously inward along the axis of the bidirectional screw rod 223, controlling the two clamping jaws to deflect inward, and realizing the action of closing and clamping the I-beam. The two clamping jaws are fixed together by two pieces of grab pieces 226 through shaft sleeves 228 and rivets 229. The outer side of the grab piece 226 is arc-shaped, and the inner side bottom is provided with an upwardly inclined U-shaped groove. The bottom of the U-shaped groove is provided with an arc-shaped protrusion, and the two sides of the arc-shaped protrusion are concave arc transition edges. The U-shaped groove clamps the flange of the I-beam. The top of the grab piece 226 is provided with a circular hole for fixing the lifting ring spacing sleeve 225. The left and right clamping jaws are connected by the top lifting ring spacing sleeve 225 and the rivet 229, so that the left and right clamping jaws can rotate around the axis of the lifting ring spacing sleeve 225. The middle part of the lifting ring spacing sleeve 225 is an arc-shaped groove for passing through a steel wire rope.

[0039] The control mechanism 23 comprises a control box mounting support 231 fixed on the base 222, and a control box 232 mounted on the control box mounting support 231, wherein the control box 232 is internally provided with a controller 233 and a battery 234, the controller 233 is integrated with a remote control receiver and a motor controller, the motor controller is connected with the motor 211 and controls the operation of the motor 211, the remote control receiver is wirelessly connected with a remote controller and can receive an instruction signal from the remote controller to control the motor controller, thereby realizing the control of the motor 211, and the controller 233 is further provided with an indicator lamp for displaying the power condition and the power on-off state, directly displaying the working state of the lifting tool, thereby better improving the safety of operation. The controller 233 is connected with the Hall proximity switch sensors 236 through wires, the Hall proximity switch sensors 236 are long cylindrical and mounted along the axial direction of the bidirectional screw rod 223, the middle part of a sensor mounting support 235 is slotted in the axial direction of the bidirectional screw rod 223, the Hall proximity switch sensors 236 are fastened in the slot of the sensor mounting support 235 through two upper and lower sensor fixing nuts 237, and an inductive magnet 238 for triggering the Hall proximity switch sensors is mounted at the end of the bidirectional screw rod. The installation positions of the two Hall proximity switch sensors 236 in the slot are determined by the positions of the inductive magnet 238 in the clamping state and the loosening state, when the clamping jaw is in the clamping state, the upper position of the inductive magnet 238 is the installation position of the outer Hall proximity switch sensor, when the clamping jaw is in the loosening state, the upper position of the inductive magnet 238 is the installation position of the inner Hall proximity switch sensor. The slot on the sensor mounting support 235 can conveniently adjust the installation position of the Hall proximity switch sensors 236, so that they can be adapted to different models and specifications of I-beam. When the clamping jaw is in the clamping I-beam state, the inductive magnet 238 is located directly below the outer Hall proximity switch sensor 236, triggering the outer Hall proximity switch sensor signal, which indicates that the clamping jaw is in the clamping in-place state, the signal is transmitted to the controller 233, the power supply of the motor 211 is cut off by the controller 233, and the signal is transmitted to the display screen of the remote controller in the hand of the operator. When the clamping jaw is in the loosening I-beam state, the inductive magnet 238 is located directly below the inner Hall proximity switch sensor 236, triggering the inner Hall proximity switch sensor signal, which indicates that the clamping jaw is in the loosening in-place state, the signal is transmitted to the controller 233, the power supply of the motor 211 is cut off by the controller 233, and the signal is transmitted to the display screen of the remote controller in the hand of the operator.

[0040] It should be noted that the remote controller is not shown in the drawings of the present application, which is held in the hand of the operator during use to control the clamping or loosening of the lifting tool, and the principle of remote control adopts the prior art.

[0041] The anti-twist mechanism 24 comprises a linear bearing mounting plate 241 fixed to the bottom of the base 222, so that the whole clamping mechanism and the anti-twist mechanism are reliably fixed, the middle part of the linear bearing mounting plate 241 is notched for the lower passing of the driven gear 221, and the two ends are holed for mounting the linear bearings 242, the connecting line of the two holes is parallel to the length direction of the I-beam 1, the linear bearings 242 are internally provided with guide shafts 243, the top of the guide shafts 243 is provided with a limiting ring with a larger diameter than the linear bearing hole, so as to prevent the guide shafts 243 from sliding out of the linear bearings 242, the limiting ring of the guide shafts 243 and the bottom surface of the linear bearings 242 are provided with springs 244 for the rebounding reset of the guide shafts 243. The bottom of the guide shafts is provided with strong magnets 245, when the clamping mechanism 22 clamps the I-beam 1, the strong magnets 245 at the bottom of the guide shafts 243 will be tightly adsorbed on the surface of the I-beam 1, when the clamping mechanism 22 releases the I-beam 1, the strong magnets 245 are still adsorbed on the surface of the I-beam, so as to prevent the relative twisting of the clamping mechanism, thereby avoiding the accidental hanging of the clamping jaw on the I-beam, and ensuring the smooth separation of the lifting appliance.

[0042] It should be noted that the remote control receiving module of the controller 233 and the transmitter in the remote controller of the ground operator realize information transmission, so that the lifting appliance in the air can receive the power on-off, release or clamping instructions sent by the ground operator, and the clamping state of the clamping jaw and the power parameters are fed back to the display end of the remote controller, and the transmitting and receiving devices for remote control meet the related safety standards of industrial remote control anti-interference and anti-misoperation.

[0043] The use process of the remote control type I-beam lifting appliance is as follows: 1. Adjust the position of the inner and outer Hall proximity switch sensors 236 in the slots of the sensor mounting bracket 235 according to the cross-sectional size of the I-beam 1 to be hoisted.

[0044] 2. The position of the lifting point is determined according to the length of the I-beam 1, generally one-third and two-thirds of the length of the I-beam 1, the remote control I-beam lifting device is placed at the lifting point 1, the remote controller is operated to issue a clamping instruction, at this time the motor 211 rotates forward, the motor 211 drives the drive gear 212 to rotate, the drive gear 212 drives the driven gear 221 assembled on the bidirectional screw rod 223 to rotate, the driven gear 221 drives the bidirectional screw rod 223 to rotate, the rotation of the bidirectional screw rod 223 drives the screw to rotate, since the screw rod cross beam 227 is threadedly connected with the bidirectional screw rod 223, and the threads of the left and right thread segments are opposite in direction, therefore, the two screw rod cross beams 227 will move inward along the axis direction of the bidirectional screw rod 223 synchronously, the two screw rod cross beams 227 are respectively fixed on the two clamping jaws, the two clamping jaws are connected through the lifting ring spacing sleeve 225 at the top, therefore, the two clamping jaws will deflect inward at the same time, and the clamping action on the I-beam 1 is completed. At this time, the inductive magnet 238 is located directly below the outer side Hall proximity switch sensor 236, triggers the outer side Hall proximity switch sensor 236 to send a signal, the motor controller closes the power supply, and at the same time, the clamping state signal is fed back to the operator's remote controller end. The operation at the lifting point 2 is the same.

[0045] 3. After the I-beam 1 is clamped, under the action of the magnetic force, the guide shaft of the anti-twisting mechanism 24 goes down, and the strong magnet 245 at the bottom is stably adsorbed on the surface of the I-beam 1. Then the steel wire rope 4 on the lifting hook of the crane is hung on the lifting ring spacing sleeve 225, and the connection between the lifting device and the hoisting equipment is completed.

[0046] 4. After confirming that the lifting device is clamped stably and firmly, the signal is normal, and the surrounding environment is safe, the hoisting personnel are commanded to hoist, the I-beam 1 is hoisted to the installation position, and the positioning work of the I-beam 1 is completed.

[0047] 5. After confirming that the I-beam 1 is positioned, the operator issues a loosening instruction through the remote controller, when the motor 211 reverses, the two screw rod cross beams 227 will move outward along the axis direction of the bidirectional screw rod 223 synchronously, thereby driving the two clamping jaws to deflect outward at the same time, and the loosening action on the I-beam 1 is completed. Due to the action of the anti-twisting mechanism 24, after the I-beam 1 is loosened, the position of the lifting device relative to the I-beam 1 can remain unchanged. At this time, the inductive magnet 238 is located directly below the inner side Hall proximity switch sensor 236, triggers the inner side Hall proximity switch sensor 236 to send a signal, the motor controller closes the power supply, and at the same time, the loosening state signal is fed back to the operator's remote controller end.

[0048] 6. After confirming that the lifting device is in the loosening state, the hoisting personnel are commanded to separate from the lifting device, and the automatic dismounting work of the lifting cable device is completed.

[0049] To sum up, the remote control type I-beam hanger can easily complete the removal work of the hoisting device in the high altitude through the perfect cooperation of the actuator and the control mechanism, without the need for the construction personnel to climb to the I-beam to remove the hoisting device, greatly improves the efficiency of the hoisting operation, effectively reduces the labor intensity of the construction personnel, avoids the dangerous high-altitude operation of the construction personnel, significantly improves the safety of the construction, and the hanger can also be applied to different types and specifications of I-beams, improving the versatility of the hanger.

[0050] Embodiment two: The same as embodiment one will not be repeated, and the difference is that: In addition to the driving gear 212 and the driven gear 221 meshing to realize transmission, the worm and the worm gear can also be used to realize transmission.

[0051] The remote control type I-beam hanger shown above is a specific embodiment of the present application, which has embodied the essential characteristics and progress of the present application. According to the actual use needs, equivalent modifications can be made to the shape, structure, etc. under the inspiration of the present application, which are all within the protection scope of the present application.

Claims

1. A remote-controlled I-beam lifting device, characterized in that: It includes a drive mechanism (21), a clamping mechanism (22), a control mechanism (23), an anti-torsion mechanism (24), and a remote controller for wirelessly controlling the operation of the drive mechanism (21); the drive mechanism is connected to the clamping mechanism to drive the clamping mechanism (22) to operate; The drive mechanism includes a motor (211) and a drive gear (212) connected to the output shaft of the motor (211). The clamping mechanism (22) includes a driven gear (221) meshing with the driving mechanism, a bidirectional screw (223) driven to rotate by the driven gear (221), and two jaws symmetrically arranged on the left and right. The jaws are provided with a lead screw beam (227), and the two ends of the bidirectional screw (223) are threadedly connected to the lead screw beam (227) on the jaws on both sides. The anti-torsion mechanism (24) includes a linear bearing mounting plate (241) connected to the clamping mechanism (22), and linear bearings (242) installed vertically at both ends of the linear bearing mounting plate (241). A guide shaft (243) is inserted into the linear bearing (242), and a spring (244) is provided between the guide shaft (243) and the linear bearing (242). A strong magnet (245) is fixed at the bottom of the guide shaft. The length direction of the linear bearing mounting plate (241) is perpendicular to the bidirectional screw (223).

2. The remote-controlled I-beam lifting device according to claim 1, characterized in that: The drive mechanism also includes a motor mounting bracket (213), on which the motor (211) is mounted. The output shaft of the motor (211) extends out of the motor mounting bracket (213), and the output shaft is connected to a drive gear (212) which serves as a drive member. The drive gear (212) meshes with a driven gear (221) which serves as a driven member. The clamping mechanism base (222) is located below the motor mounting bracket (213).

3. The remote-controlled I-beam lifting device according to claim 1, characterized in that: The clamping mechanism also includes a base (222), with a slot in the middle for meshing the drive gear and the driven gear (221). The driven gear (221) is installed in the middle of the bidirectional screw (223). The base (222) has a mounting base for a bearing (224), and the bidirectional screw (223) is inserted into the bearing.

4. The remote-controlled I-beam lifting device according to claim 1, characterized in that: Each gripper is composed of two gripping plates (226), which are fixed together by a bushing (228) and a rivet (229). The lead screw beam (227) is fixed between the two gripping plates (226). The two grippers are rotatably connected by a top lifting ring spacer (225), and the left and right grippers can rotate around the axis of the lifting ring spacer.

5. A remote-controlled I-beam lifting device according to claim 4, characterized in that: The outer side of the gripper is arc-shaped, and the bottom of its inner side has an upwardly sloping U-shaped groove. The bottom of the U-shaped groove has an arc-shaped protrusion, and the two sides of the arc-shaped protrusion are concave arc transition edges. The U-shaped groove is used to clamp the flange of the I-beam, and the top opening is used to insert the lifting ring spacer sleeve. The middle part of the lifting ring spacer sleeve has an arc-shaped groove for threading the steel wire rope.

6. The remote-controlled I-beam lifting device according to claim 1, characterized in that: The control mechanism (23) includes a control box mounting bracket (231) and a control box (232) mounted on the control box mounting bracket (231). The control box (232) contains a controller (233) and a battery (234). The left side of the control box (232) is a sensor mounting bracket (235). Two Hall proximity switch sensors (236) are mounted on the sensor mounting bracket (235) by sensor fixing nuts (237). The sensing magnet (238) that triggers the Hall proximity switch sensor (236) is mounted on the end of the bidirectional screw (223).

7. A remote-controlled I-beam lifting device according to claim 6, characterized in that: The controller has a built-in remote control signal receiving module and a motor control module. The remote control signal receiving module is connected to the remote control wirelessly. The motor control module receives signals from the remote control and sensor signals, and then controls the battery (234) to switch the motor (211) on and off.

8. A remote-controlled I-beam lifting device according to claim 6, characterized in that: The sensor mounting bracket (235) is mounted on the lead screw beam (227) and moves synchronously with the lead screw beam (227). The sensor mounting bracket (235) has a slot along the axis of the bidirectional screw (223) to adjust the mounting position of the Hall proximity switch sensor (236). When the clamping mechanism (22) is clamping the I-beam, the position directly above the induction magnet (238) at the end of the bidirectional screw (223) is the mounting position of the outer Hall proximity switch sensor (236). When the clamping mechanism (22) is releasing the I-beam, the position directly above the induction magnet (238) at the end of the bidirectional screw (223) is the mounting position of the inner Hall proximity switch sensor (236).

9. A remote-controlled I-beam lifting device according to claim 3, characterized in that: The linear bearing mounting plate (241) is fixed below the base (222), and the linear bearing (242) is provided on the linear bearing mounting plate (241) on the outside of the base (222); the top of the guide shaft (243) is provided with a limiting ring, and the spring is located between the limiting ring and the linear bearing mounting plate (241). The guide shaft (243) extends downward out of the linear bearing mounting plate (241).

10. A remote-controlled I-beam lifting device according to claim 9, characterized in that: The left and right threaded sections of the bidirectional screw (223) are opposite threads, and the middle section is a cylindrical section. A raised shoulder is provided at the intersection of the threaded section and the cylindrical section.

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