Automatic unhooking hoisting device

Abstract

An automatic unhooking hoisting device comprises a hook body which is arranged vertically and is in the shape of an athletic track as a whole, the vertical section on the left side of the hook body has a hanging interface, the left side of the hook body is rotatably provided with a movable hook for shielding the hanging interface at the lower part of the hanging interface, the left side of the hook body is fixedly provided with a hanging piece for hanging the movable hook at the upper part of the hanging interface, and the hanging piece is provided with a manual operating mechanism for limiting or opening the movable hook and an electric remote control mechanism for limiting the position of the manual operating mechanism. The invention has a scientific principle, is easy to operate, is safe and reliable, and can be quickly unhooked by remote control in the air, which provides good safety protection for construction personnel and correspondingly improves construction efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to an automatic unhooking hoisting device. Background Art

[0002] In construction, lifting equipment (tower crane) is often used to suspend slings to lift construction materials from the ground to high places. After lifting to a high place, the slings need to be separated from the construction materials (i.e., unhooked or removed). Currently, the unhooking or removing work is still done by workers standing at a height and directly operated by hand. This primitive operation method has the problems of high risk factor, inconvenient operation and low work efficiency. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides an automatic unhooking hoisting device which has strong safety and reliability, is easy to operate and can improve construction efficiency.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: an automatic unhooking lifting device, comprising a hook body which is vertically arranged and in the shape of an athletic track as a whole, the vertical section on the left side of the hook body having a hanging interface, a movable hook for shielding the hanging interface is rotatably provided at the lower part of the hanging interface on the left side of the hook body, a hanging piece for hanging the movable hook is fixedly provided at the upper part of the hanging interface on the left side of the hook body, and a manual operating mechanism for limiting or opening the movable hook and an electric remote control mechanism for limiting the position of the manual operating mechanism are provided on the hanging piece.

[0005] The movable hook is an inverted U-shaped structure, and the lower two ends of the movable hook are rotatably connected to the left side of the hook body at the lower end of the hanging interface through a first pin shaft, and the first pin shaft is perpendicular to the vertical plane where the hook body is located.

[0006] The hanging part comprises a vertically arranged support rod, a hanging groove which is open on the left side, front side and rear side is arranged on the left side of the lower end of the support rod, the upper part of the movable hook is hung in the hanging groove, and a mounting seat is arranged on the upper end of the support rod.

[0007] The manual operating mechanism includes an installation box, a crank arm, a handle and a shift fork. The rear side of the installation box is fixedly connected to the front side of the support rod and is located above the hanging groove. A rotating shaft parallel to the first pin shaft is rotatably provided in the installation box. The shift fork is a flat plate structure. A shift groove is provided at the lower part of the shift fork for snap-fitting with the upper part of the movable hook. The front side surface of the shift fork is fixedly arranged at the rear end of the rotating shaft and is located on the rear side of the support rod. The lower end of the crank arm is vertically fixedly connected to the rotating shaft and is located on the front side of the support rod. The handle is arranged on the front side of the upper end of the crank arm. A coil spring sleeved on the rotating shaft is arranged in the installation box, and two spring legs of the coil spring are respectively pressed against the rotating shaft and the inner wall of the installation box; under the action of the coil spring, the rotating shaft and the crank arm are subjected to a torsional force to rotate to the right.

[0008] The electric remote control mechanism includes a box body, a PLC controller, a lithium battery, a remote control signal receiving module, a motor, a rotating arm, a driving arm and a swing arm. The mounting seat is a horizontally arranged L-shaped structure. The bottom of the right front end of the mounting seat is fixedly connected to the upper end of the support rod. The box body is fixedly arranged on the inner side of the L-shaped structure of the mounting seat. The PLC controller, the lithium battery and the remote control signal receiving module are all arranged in the box body. The receiving head of the remote control signal receiving module extends out of the mounting box. The motor is fixedly arranged at the bottom of the left rear end of the mounting seat. The rotating arm, the driving arm and the swing arm are all arranged horizontally. The main shaft of the motor is vertically fixedly connected to the right end of the rotating arm. The rear end of the driving arm is hinged to the left end of the rotating arm, the front end of the driving arm is hinged to the left end of the swing arm, and the right end of the swing arm is hinged to the upper right front end of the mounting seat through the second pin shaft. The upper right front end of the mounting seat is provided with a convex column located between the box body and the second pin shaft, and a torsion spring is sleeved on the convex column. The two spring legs of the torsion spring are respectively pressed with the front side of the box body and the rear side of the swing arm. The front side of the swing arm is provided with a positioning step that is snap-fitted with the right side of the upper part of the crank arm.

[0009] The installation box comprises a cover shell and a fixing seat. The fixing seat and the lower end of the support rod are an integrated structure. The rotating shaft is rotatably connected to the fixing seat, and the cover shell is buckled on the outside of the fixing seat.

[0010] By adopting the above technical scheme, the rated voltage of the lithium battery in the present invention is 12V, the motor is 12V DC power, and the lithium battery powers the motor and the remote control signal receiving module. When the present invention is in use, the upper part of the hook body is connected to the hook of the lifting equipment (tower crane), and the lower part of the hook body is hung with a rope for binding or connecting construction materials, and the rope is inserted through the hanging interface. When hanging construction materials on the ground, the worker holds the remote control and presses the "on" button on the remote control. After the remote control signal receiving module receives the signal, it transmits the signal to the PLC controller. The PLC controller issues a command to start the motor. The motor starts to rotate in the forward direction, driving the rotating arm to rotate backward, the swing arm pulls the driving arm backward, the driving arm pulls the swing arm backward, and the swing arm rotates backward with the second pin shaft as the fulcrum. The swing arm overcomes the elastic force of the torsion spring, and the positioning step on the front side of the swing arm is separated from the contact and engagement with the upper wall of the right side of the crank arm. Under the elastic force of the coil spring, the rotating shaft and the crank arm rotate to the right, and the lower part of the shift fork rotates to the left with the rotating shaft as the fulcrum. Since the top of the movable hook is located in the shifting groove of the shifting fork, the shifting fork will drive the movable hook to rotate to the left with the first pin shaft as the fulcrum when it rotates to the left, and the top of the movable hook will be separated from the hanging groove at the lower end of the support rod. When the movable hook rotates to the left to be separated from the shifting groove, the movable hook automatically falls under the action of its own gravity, thereby opening the hanging interface on the left side of the hook body. Then the worker uses his hand to hang the lifting rope to the lower part of the hook body through the hanging interface, and then the worker rotates the movable hook to the upper left with his left hand, and at the same time, holds the handle with his right hand and rotates it to the left to overcome the torsion of the coil spring. The upper part of the movable hook enters the slot at the lower part of the fork and then rotates to the left to the hanging slot at the lower end of the support rod under the drive of the fork. The right hand temporarily holds the handle without moving, and the freed left hand takes the remote control and presses the "off" button on the remote control. After the control signal receiving module receives the signal, it transmits the signal to the PLC controller. The PLC controller issues a command to start the motor, and the motor rotates in the opposite direction, driving the rotating arm to rotate forward, the rotating arm pushes the driving arm forward, and the driving arm pushes the swing arm forward. The swing arm rotates forward with the second pin shaft as the fulcrum, and the right hand holding the handle is released. Under the action of the coil spring, the upper right side of the crank arm presses on the positioning step on the front side of the swing arm, thereby positioning the movable hook vertically.

[0011] When the lifting equipment (tower crane) hoists the construction materials to the specified height, press the "start" button on the remote control on the ground. After the remote control signal receiving module receives the signal, it transmits the signal to the PLC controller. The PLC controller issues a command to start the motor. The motor starts to rotate in the forward direction, driving the rotating arm to rotate backward. The swing arm pulls the driving arm backward, and the driving arm pulls the swing arm backward. The swing arm rotates backward with the second pin shaft as the fulcrum. The swing arm overcomes the elastic force of the torsion spring, and the positioning step on the front side of the swing arm is separated from the contact and engagement with the upper wall of the right side of the crank arm. Under the elastic force of the coil spring, the rotating shaft and the crank arm rotate to the right, and the lower part of the shift fork rotates to the left with the rotating shaft as the fulcrum. Since the top of the movable hook is located in the shifting groove of the shifting fork, the shifting fork will drive the movable hook to rotate to the left with the first pin shaft as the fulcrum when it rotates to the left, and the top of the movable hook is separated from the hanging groove at the lower end of the support rod. When the movable hook rotates to the left to be separated from the slot, the movable hook automatically falls under the action of its own gravity, thereby opening the hanging interface on the left side of the hook body. The lifting device is controlled to move the present invention to the right, and the suspension rope can be automatically disengaged from the hanging interface, thereby realizing automatic unhooking. The hanging interface is as large as possible in the height direction, so that it is easier to unhook.

[0012] The torsion spring in the present invention presses the swing arm, so that the positioning step on the front side of the swing arm and the crank arm have a good snap-fitting effect during the lifting process, ensuring that the movable hook always blocks the hanging interface, and has reliable safety.

[0013] The shift fork in the present invention plays the role of shifting the movable hook to block or open the hook interface. The hook groove plays the role of limiting the position of the movable hook.

[0014] The electric remote control mechanism of the present invention adopts a motor-driven connecting rod transmission structure, which has the advantages of stable and reliable power transmission.

[0015] In summary, the present invention has a scientific principle, is easy to operate, safe and reliable, and can be quickly unhooked by remote control at high altitudes, thereby providing good safety protection for construction personnel and correspondingly improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the planar structure of the present invention;

[0017] Figure 2 yes Figure 1 A top view of

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0019] like Figure 1 , Figure 2 and Figure 3As shown, an automatic unhooking lifting device of the present invention comprises a hook body 1 which is vertically arranged and in the shape of an athletic track as a whole, the vertical section on the left side of the hook body 1 having a hanging interface 2, a movable hook 3 for shielding the hanging interface 2 is rotatably provided on the left side of the hook body 1 at the lower part of the hanging interface 2, a hanging piece for hanging the movable hook 3 is fixedly provided on the upper part of the hanging interface 2 on the left side of the hook body 1, and a manual operating mechanism for limiting or opening the movable hook 3 and an electric remote control mechanism for limiting the position of the manual operating mechanism are provided on the hanging piece.

[0020] The movable hook 3 is an inverted U-shaped structure. The lower ends of the movable hook 3 are rotatably connected to the left side of the hook body 1 at the lower end of the hanging interface 2 through the first pin shaft 4, and the first pin shaft 4 is perpendicular to the vertical plane where the hook body 1 is located.

[0021] The hanging member includes a vertically arranged support rod 5, a hanging groove 6 which is open on the left side, front side and rear side is provided on the left side of the lower end of the support rod 5, the upper part of the movable hook 3 is hung in the hanging groove 6, and a mounting seat 7 is provided on the upper end of the support rod 5.

[0022] The manual operating mechanism includes a mounting box 8, a crank arm 9, a handle 10 and a shift fork 11. The rear side of the mounting box 8 is fixedly connected to the front side of the support rod 5 and is located above the hanging groove 6. A rotating shaft 12 parallel to the first pin shaft 4 is rotatably provided in the mounting box 8. The shift fork 11 is a flat plate structure. A shift groove 13 is provided at the lower part of the shift fork 11 to engage with the upper part of the movable hook 3. The front side surface of the shift fork 11 is fixedly arranged at the rear end of the rotating shaft 12 and is located at the rear side of the support rod 5. The lower end of the crank arm 9 is vertically fixedly connected to the rotating shaft 12 and is located at the front side of the support rod 5. The handle 10 is arranged on the front side of the upper end of the crank arm 9. A coil spring (not shown in the figure) is arranged in the mounting box 8 and is sleeved on the rotating shaft 12. The two spring legs of the coil spring are respectively pressed against the rotating shaft 12 and the inner wall of the mounting box 8; under the action of the coil spring, the rotating shaft 12 and the crank arm 9 are subjected to a torsion force to rotate to the right.

[0023] The electric remote control mechanism includes a box body 14, a PLC controller, a lithium battery, a remote control signal receiving module, a motor 15, a rotating arm 16, a driving arm 17 and a swing arm 18. The mounting seat 7 is a horizontally arranged L-shaped structure. The bottom of the right front end of the mounting seat 7 is fixedly connected to the upper end of the support rod 5. The box body 14 is fixedly arranged on the inner side of the L-shaped structure of the mounting seat 7. The PLC controller, the lithium battery and the remote control signal receiving module are all arranged in the box body 14. The receiving head of the remote control signal receiving module extends out of the mounting box 8. The motor 15 is fixedly arranged at the bottom of the left rear end of the mounting seat 7. The rotating arm 16, the driving arm 17 and the swing arm 18 are all horizontal. The main shaft of the motor 15 is fixedly connected vertically upward to the right end of the rotating arm 16, the rear end of the driving arm 17 is hinged to the left end of the rotating arm 16, the front end of the driving arm 17 is hinged to the left end of the swing arm 18, and the right end of the swing arm 18 is hinged to the upper right front end of the mounting seat 7 through the second pin shaft 19. The upper right front end of the mounting seat 7 is provided with a boss 20 located between the box body 14 and the second pin shaft 19, and a torsion spring 21 is sleeved on the boss 20. The two spring legs of the torsion spring 21 are respectively pressed and matched with the front side of the box body 14 and the rear side of the swing arm 18. The front side of the swing arm 18 is provided with a positioning step 22 which is snap-fitted with the upper right side of the crank arm 9.

[0024] The installation box 8 includes a cover shell and a fixing seat. The fixing seat and the lower end of the support rod 5 are an integral structure. The rotating shaft 12 is rotatably connected to the fixing seat, and the cover shell is buckled on the outside of the fixing seat.

[0025] The rated voltage of the lithium battery in the present invention is 12V, the motor 15 is 12V DC power, and the lithium battery supplies power to the motor 15 and the remote control signal receiving module. When the present invention is in use, the upper part of the hook body 1 is connected to the hook of the lifting equipment (tower crane), and the lower part of the hook body 1 is hung with a rope for binding or connecting construction materials, and the rope is inserted through the hanging interface 2. When hanging construction materials on the ground, the worker holds the remote control and presses the "on" button on the remote control. After the remote control signal receiving module receives the signal, it transmits the signal to the PLC controller. The PLC controller issues a command to start the motor 15. The motor 15 starts to rotate forward, driving the rotating arm 16 to rotate backward, and the swing arm 18 pulls the driving arm 17 backward. The driving arm 17 pulls the swing arm 18 backward. The swing arm 18 rotates backward with the second pin shaft 19 as the fulcrum. The swing arm 18 overcomes the elastic force of the torsion spring 21, and the positioning step 22 on the front side of the swing arm 18 is separated from the right side of the crank arm 9. The contact snap-fit ​​of the upper wall, under the elastic force of the coil spring, the rotating shaft 12 and the crank arm 9 rotate to the right, and the lower part of the fork 11 rotates to the left with the rotating shaft 12 as the fulcrum. Since the top of the movable hook 3 is located in the shifting groove 13 of the shifting fork 11, the shifting fork 11 will drive the movable hook 3 to rotate to the left with the first pin 4 as the fulcrum when it rotates to the left, and the top of the movable hook 3 will be separated from the hanging groove 6 at the lower end of the support rod 5. When the movable hook 3 rotates to the left and is separated from the shifting groove 13, the movable hook 3 automatically falls under the action of its own gravity, thereby opening the hanging interface 2 on the left side of the hook body 1. Then the worker uses his hand to hang the lifting rope to the lower part of the hook body 1 through the hanging interface 2, and then the worker rotates the movable hook 3 to the upper left with his left hand, and at the same time, holds the handle 10 with his right hand and rotates it to the left to overcome the torsion of the coil spring. The upper part of the movable hook 3 enters the slot 13 at the lower part of the fork 11 and then rotates to the left into the hanging slot 6 at the lower end of the support rod 5 under the drive of the fork 11. The right hand temporarily holds the handle 10 without moving, and the freed left hand takes the remote control and presses the "off" button on the remote control. After the control signal receiving module receives the signal, it transmits the signal to the PLC controller. The PLC controller issues a command to start the motor 15, and the motor 15 rotates in the opposite direction, driving the rotating arm 16 to rotate forward, and the rotating arm 16 pushes the driving arm 17 forward, and the driving arm 17 pushes the swing arm 18 forward. The swing arm 18 rotates forward with the second pin shaft 19 as the fulcrum. Release the right hand holding the handle 10, and under the action of the coil spring, the upper right side of the crank arm 9 presses on the positioning step 22 on the front side of the swing arm 18, so that the movable hook 3 is vertically positioned.

[0026] When the lifting equipment (tower crane) lifts the construction materials to the specified height, the "start" button on the remote control is pressed on the ground. After the remote control signal receiving module receives the signal, it transmits the signal to the PLC controller. The PLC controller issues a command to start the motor 15. The motor 15 starts to rotate forward, driving the rotating arm 16 to rotate backward. The swing arm 18 pulls the driving arm 17 backward. The driving arm 17 pulls the swing arm 18 backward. The swing arm 18 rotates backward with the second pin shaft 19 as the fulcrum. The swing arm 18 overcomes the elastic force of the torsion spring 21, and the positioning step 22 on the front side of the swing arm 18 is separated from the turning point. The contact snap-fitting of the upper wall on the right side of the arm 9 causes the rotating shaft 12 and the crank arm 9 to rotate to the right under the elastic force of the coil spring, and the lower part of the fork 11 rotates to the left with the rotating shaft 12 as the fulcrum. Since the top of the movable hook 3 is located in the shifting groove 13 of the shifting fork 11, the shifting fork 11 will drive the movable hook 3 to rotate to the left with the first pin shaft 4 as the fulcrum when it rotates to the left, and the top of the movable hook 3 will be separated from the hanging groove 6 at the lower end of the support rod 5. When the movable hook 3 rotates to the left to be separated from the shifting groove 13, the movable hook 3 automatically falls under the action of its own gravity, thereby opening the hanging interface 2 on the left side of the hook body 1. The lifting equipment is controlled to move the present invention to the right, and the lifting rope can automatically detach from the hanging interface 2, thereby realizing automatic unhooking. The hanging interface 2 is as large as possible in the height direction, so that it is easier to unhook.

[0027] It should be emphasized that the automatic control among the remote controller, PLC controller, remote control signal receiving module and motor 15 in the present invention is an existing conventional technology and does not involve a new computer program.

[0028] This embodiment does not impose any formal limitation on the shape, material, structure, etc. of the present invention. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. An automatic unhooking hoisting device, characterized in that: The hook body is vertically arranged and in the shape of an athletic track as a whole. The vertical section on the left side of the hook body has a hanging interface. The left side of the hook body is rotatably provided with a movable hook for shielding the hanging interface at the lower part of the hanging interface. The left side of the hook body is fixedly provided with a hanging piece for hanging the movable hook at the upper part of the hanging interface. The hanging piece is provided with a manual operating mechanism for limiting or opening the movable hook and an electric remote control mechanism for limiting the position of the manual operating mechanism. The movable hook is an inverted U-shaped structure, and the two ends of the lower part of the movable hook are rotatably connected to the left side of the hook body at the lower end of the hanging interface through a first pin shaft, and the first pin shaft is perpendicular to the vertical plane where the hook body is located; The hanging member comprises a vertically arranged support rod, a hanging groove with open left, front and rear sides is arranged on the left side of the lower end of the support rod, the upper part of the movable hook is hung in the hanging groove, and a mounting seat is arranged on the upper end of the support rod; The manual operating mechanism includes a mounting box, a crank arm, a handle and a shift fork. The rear side of the mounting box is fixedly connected to the front side of the support rod and is located above the hanging groove. A rotating shaft parallel to the first pin shaft is rotatably arranged in the mounting box. The shift fork is a flat plate structure. A shift groove is provided at the lower part of the shift fork to be engaged with the upper part of the movable hook. The front side of the shift fork is fixedly arranged at the rear end of the rotating shaft and is located at the rear side of the support rod. The lower end of the crank arm is vertically fixedly connected to the rotating shaft and is located at the front side of the support rod. The handle is arranged at the front side of the upper end of the crank arm. A coil spring sleeved on the rotating shaft is arranged in the mounting box. Two spring legs of the coil spring are respectively pressed against the rotating shaft and the inner wall of the mounting box. Under the action of the coil spring, the rotating shaft and the crank arm are subjected to a torsion force to rotate to the right. The electric remote control mechanism comprises a box body, a PLC controller, a lithium battery, a remote control signal receiving module, a motor, a rotating arm, a driving arm and a swing arm. The mounting seat is a horizontally arranged L-shaped structure. The bottom of the right front end of the mounting seat is fixedly connected to the upper end of the support rod. The box body is fixedly arranged on the inner side of the L-shaped structure of the mounting seat. The PLC controller, the lithium battery and the remote control signal receiving module are all arranged in the box body. The receiving head of the remote control signal receiving module extends out of the mounting box. The motor is fixedly arranged at the bottom of the left rear end of the mounting seat. The rotating arm, the driving arm and the swing arm are all arranged horizontally. The main shaft of the motor is vertically fixedly connected to the right end of the rotating arm. The rear end of the driving arm is hinged to the left end of the rotating arm. The front end of the driving arm is hinged to the left end of the swing arm. The right end of the swing arm is hinged to the upper right front end of the mounting seat through the second pin shaft. The upper right front end of the mounting seat is provided with a convex column located between the box body and the second pin shaft. A torsion spring is sleeved on the convex column. The two spring legs of the torsion spring are respectively pressed and matched with the front side of the box body and the rear side of the swing arm. The front side of the swing arm is provided with a positioning step that is clamped and matched with the right side of the upper part of the crank arm. The installation box comprises a cover shell and a fixing seat. The fixing seat and the lower end of the support rod are an integrated structure. The rotating shaft is rotatably connected to the fixing seat, and the cover shell is buckled on the outside of the fixing seat.

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