Crane capable of preventing top collision of lifting hook
By employing a multi-stage anti-overhead mechanism and a forced power-off component, the problem of hook overheading caused by inertia is solved, thus achieving safe lifting and lowering of the hook and equipment protection.
Patent Information
- Application Number
- CN202423015813.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-09
AI Technical Summary
The upward movement of the hook due to inertia during the lifting process, especially when the control element is not closed in time, may cause the hook to exceed the predetermined stroke, resulting in damage to the device.
Employing elastic elements and forced power-off protection components, and through a multi-stage anti-collision mechanism including a protective seat, telescopic column, spring, guide slide, laser sensor, and alarm, combined with a controller and lifting motor, it achieves buffering of the inertial movement of the hook and timely power-off protection.
It effectively avoids the phenomenon of the hook hitting the top of the crane shell, ensures the safe lifting and lowering of the hook, provides immediate warning and forced power-off protection, and prevents equipment damage.
Smart Images
Figure CN223575979U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hoisting technology field, concretely is a crane of hook anti -top -of -the -stroke. BACKGROUND
[0002] The crane refers to the multi -action hoisting machinery of vertical lifting and horizontal handling heavy object in a certain range, part crane uses, the hook will move up and down in the process of hoisting heavy object, the steel wire rope drum of connecting hook rotates ceaselessly when hook moves up and down, through the rotation of the drum, drive the steel wire rope ceaselessly release or shrink upwards, the steel wire rope release or shrink with hook moves up and down, thereby realize the hoisting operation of hook, however, when the hook is rolled up by the drum and moves up, because the hook moves up has certain speed, so the hook has certain moving inertia in the process of moving up, if the hook moves up to the distance close to the shell of crane, if the driving element of crane is closed through the control element at this time, the inertia influence appears the top -of -the -stroke phenomenon, at the same time, the device can not be closed in time to the driving element of crane by the control element, thereby leading to the stroke of hook moving up exceeding the predetermined stroke, further leading to the top -of -the -stroke phenomenon of hook, and it needs to be improved. CONTENT OF THE UTILITY MODEL
[0003] The utility model solves the technical problem of overcoming the defects of the prior art, and provides a crane with a hook anti-top-of-the-stroke function.
[0004] To achieve the above object, the utility model provides the following technical scheme: a crane with a hook anti-top-of-the-stroke function, comprising a hoisting shell and a multi-stage anti-top-of-the-stroke mechanism.
[0005] The hoisting shell: a wire reel is rotatably connected to the inside of the hoisting shell through a bearing, a hoisting rope is arranged between the wire reel and the hoisting shell, a movable pulley is slidably connected to the lower end of the hoisting rope, and a hook is arranged at the lower end of the movable pulley.
[0006] The multi-stage anti-top-of-the-stroke mechanism: it comprises a protection seat, an extension column one, a spring one, a contact seat, a guide slide column and a forced power-off protection assembly, the protection seat is arranged on the outer side of the hoisting shell, the contact seat is arranged on the lower side of the protection seat through two symmetrically distributed extension columns one and springs one, the springs one are movably sleeved with the outer ends of the adjacent extension columns one, the guide slide column is slidably connected in the rectangular groove on the lower side of the protection seat, the lower end of the guide slide column is fixedly connected with the contact seat, and the forced power-off protection assembly is arranged in the protection seat.
[0007] Further, the controller is located outside the hoisting shell, an input end of the controller is electrically connected with an external power supply, and the control electric element is convenient.
[0008] Further, the multi-stage anti-top-striking mechanism further comprises a rubber pad arranged on the outer arc surface of the contact seat to avoid hard contact between the contact seat and the movable pulley at the upper end of the hook.
[0009] Further, the multi-stage anti-top-striking mechanism further comprises a laser sensor arranged on the left wall of the protection seat, the laser sensor is bidirectionally electrically connected with the controller, an alarm is arranged on the front side of the hoisting shell, an input end of the alarm is electrically connected with an output end of the controller, and the alarm can warn the worker that the hook is about to strike.
[0010] Further, a hoisting motor is arranged on the rear side of the hoisting shell, an input end of the hoisting motor is electrically connected with an output end of the controller, and an output shaft of the hoisting motor is fixedly connected with the rear end of the wire reel, so as to provide power for the device to hoist and lower the hook.
[0011] Further, the forced power-off protection assembly comprises a groove, a first conductive column, a second conductive column, two second telescopic columns and a conductive seat, the groove is arranged on the top wall of the protection seat, the first conductive column and the second conductive column are arranged at the left and right ends in the groove respectively, the conductive seat is arranged in the groove through the telescopic ends of the two second telescopic columns, the first conductive column, the second conductive column and the conductive seat are connected in series through a wire to the circuit between the hoisting motor and the controller, when the hook moves upward beyond the predetermined stroke, the hoisting motor can be forced to be powered off in time, so as to avoid the hook striking operation.
[0012] Further, the forced power-off protection assembly further comprises two second springs, the two second springs are symmetrically arranged between the conductive seat and the groove, the second springs are movably sleeved with the outer ends of the two second telescopic columns, after the worker removes the extrusion and movement of the conductive seat by the guide slide column, the compression elastic force of the second springs can make the conductive seat automatically conductively contact with the first conductive column and the second conductive column, and the electrical connection between the controller and the hoisting motor is restored.
[0013] Compared with the prior art, the hoist with the hook anti-striking function has the following advantages:
[0014] During the upward movement of the hook of the hoist, the telescopic column one, the spring one, the contact seat, the rubber pad, the guide slide column and the laser sensor can avoid the phenomenon that the hook collides with the hoist shell due to the inertia of the upward movement of the hook, and the forced power-off protection assembly can automatically force the hoisting motor to be closed when the controller fails, so as to realize the anti-striking and anti-sliding operation and be convenient to use. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 It is a structure schematic view of the utility model;
[0016] Fig. 2 It is a protective seat sectional structure schematic view of the utility model;
[0017] Fig. 3 It is a structure schematic view of the utility model A place amplification.
[0018] In the figure: 1 hoist shell, 2 controller, 3 wire reel, 4 hoisting rope, 5 movable pulley, 6 lifting hook, 7 multi-stage anti-collision mechanism, 71 protective seat, 72 telescopic column one, 73 spring one, 74 contact seat, 75 rubber pad, 76 guide slide column, 77 laser sensor, 78 forced power-off protection assembly, 781 recess, 782 conductive column one, 783 conductive column two, 784 telescopic column two, 785 spring two, 786 conductive seat, 79 alarm, 8 hoisting motor. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.
[0020] Please refer to Figs. 1-3 The embodiment provides a technical scheme: a hoist anti-collision lifting hook, comprising a hoist shell 1 and a multi-stage anti-collision mechanism 7.
[0021] The hoist shell 1: the inside thereof is rotatably connected with the wire reel 3 through a bearing one, the wire reel 3 and the hoist shell 1 are provided with the hoisting rope 4, the lower end of the hoisting rope 4 is slidably connected with the movable pulley 5, the lower end of the movable pulley 5 is provided with the lifting hook 6, further comprising the controller 2, the controller 2 is located outside the hoist shell 1, the input end of the controller 2 is electrically connected with an external power supply, the rear side of the hoist shell 1 is provided with the hoisting motor 8, the input end of the hoisting motor 8 is electrically connected with the output end of the controller 2, the output shaft of the hoisting motor 8 is fixedly connected with the rear end of the wire reel 3, when using the hoist, the controller 2 is used to control the hoisting motor 8 to make the output shaft thereof reverse, thereby driving the wire reel 3 to reverse, realizing the winding and unwinding operation of the hoisting rope 4, and further realizing the lifting operation of the lifting hook 6;
[0022] Multi-stage anti-collision mechanism 7: it includes protection seat 71, telescopic column one 72, spring one 73, contact seat 74, guide slide column 76 and forced power-off protection assembly 78, protection seat 71 is arranged on the outer side of hoisting shell 1, the lower side of protection seat 71 is provided with contact seat 74 through two symmetrical telescopic column one 72 and spring one 73, spring one 73 is movably sleeved with the outer end of adjacent telescopic column one 72, guide slide column 76 is slidably connected in the rectangular groove of the lower side of protection seat 71, the lower end of guide slide column 76 is fixedly connected with contact seat 74, the inside of protection seat 71 is provided with forced power-off protection assembly 78, multi-stage anti-collision mechanism 7 further includes rubber pad 75, rubber pad 75 is arranged on the outer arc surface of contact seat 74, multi-stage anti-collision mechanism 7 further includes laser sensor 77 and alarm 79, laser sensor 77 is arranged on the left wall of protection seat 71, laser sensor 77 is bidirectionally electrically connected with controller 2, the front side of hoisting shell 1 is provided with alarm 79, the input end of alarm 79 is electrically connected with the output end of controller 2, forced power-off protection assembly 78 includes groove 781, conductive column one 782, conductive column two 783, telescopic column two 784 and conductive seat 786, groove 781 is opened in the top wall of protection seat 71, the inside of groove 781 is respectively provided with conductive column one 782 and conductive column two 783 at the left and right ends, the inside of groove 781 is provided with a conductive seat 786 through the telescopic ends of two telescopic column two 784, conductive column one 782, conductive column two 783 and conductive seat 786 are connected in series through wires in the circuit between hoisting motor 8 and controller 2, forced power-off protection assembly 78 further includes spring two 785, spring two 785 is two, two spring two 785 are symmetrically arranged between conductive seat 786 and groove 781, spring two 785 is movably sleeved with the outer end of adjacent telescopic column two 784, the output end of conductive column one 782 is electrically connected with the input end of conductive column two 783 through conductive seat 786, the output end of conductive column two 783 is electrically connected with the input end of hoisting motor 8 through wire one, the input end of conductive column one 782 is electrically connected with the output end of controller 2 through wire two, when the output shaft of hoisting motor 8 moves up to carry out the work of hook 6 under the control of controller 2, when hook 6 moves up to a certain degree, the upper end of movable pulley 5 connected with hook 6 contacts with contact seat 74, with the continuous upward movement of hook 6, contact seat 74 is driven to move up with guide slide column 76, the telescopic end of telescopic column one 72 and spring one 73 contracts, the contraction elastic force of spring one 73 buffers the inertia of the winding upward movement of hook 6, avoids the collision of hook 6 with the outside of hoisting shell 1 due to the inertia of movement after the subsequent hoisting motor 8 is turned off, avoids the hard contact between contact seat 74 and movable pulley 5 through rubber pad 75, at the same time, controller 2 starts laser sensor 77, laser sensor 77 emits light signals to the right wall of protection seat 71 and reflects to the initial position, the distance between the two is judged through the light signal propagation time and speed, and the measurement result is transmitted to controller 2 in the form of electric signal,With the continuous upward movement of the hook 6, when the upper end of the guide slide post 76 is moved to the horizontal alignment position of the detection part of the laser sensor 77, the ranging result obtained by the controller 2 changes at this time, and then the controller 2 starts the alarm 79 to ring an alarm, thereby warning the surrounding workers that the hook 6 is about to hit the top, timely reminding the workers to power off the hoisting motor 8 through the controller 2, thereby achieving the effect of preventing the hook 6 from hitting the top, if the controller 2 fails, causing the workers to be unable to timely power off the hoisting motor 8, with the upward movement stroke of the hook 6 exceeding the predetermined stroke, the guide slide post 76 moves to the groove 781 and exerts an upward extrusion force on the conductive seat 786, so that the conductive seat 786 moves upward to separate from the conductive column one 782 and the conductive column two 783, the telescopic end of the telescopic column two 784 and the spring two 785 are retracted, thereby forcibly powering off the power supply circuit between the hoisting motor 8 and the controller 2, thereby forcibly preventing the hook 6 from hitting the top, convenient to use, after the workers remove the extrusion movement of the guide slide post 76 on the conductive seat 786, the conductive seat 786 can be automatically in conductive contact with the conductive column one 782 and the conductive column two 783 through the compression force of the spring two 785, the device can prevent the hook from hitting the top under different conditions through the elastic element and the forced power-off protection assembly 78, convenient to use.
[0023] The working principle of the crane with the hook anti-collision top provided by the utility model is as follows: when the crane is used, the controller 2 controls the hoisting motor 8 to make its output shaft reverse, thereby driving the wire reel 3 to reverse, realizing the winding and unwinding operation of the hoisting rope 4, and further realizing the lifting operation of the hook 6; when the controller 2 controls the output shaft of the hoisting motor 8 to move upward for the hook 6, when the hook 6 moves upward to a certain extent, the upper end of the movable pulley 5 connected with the hook 6 contacts the contact seat 74, with the continuous upward movement of the hook 6, the contact seat 74 is pressed to drive the guide slide column 76 to move upward, the telescopic end of the telescopic column one 72 and the spring one 73 are retracted, the retraction of the spring one 73 provides the moving inertia of the winding upward movement of the hook 6 with a moving buffer, thereby avoiding the collision of the hook 6 with the outside of the hoisting shell 1 due to the moving inertia after the hoisting motor 8 is turned off, the rubber pad 75 avoids the hard contact between the contact seat 74 and the movable pulley 5, and the controller 2 starts the laser sensor 77, the laser sensor 77 emits a light signal to the right wall of the protection seat 71 and reflects to the initial position, the distance between the two is judged according to the light signal propagation time and speed, and the measurement result is transmitted to the controller 2 in the form of an electric signal, with the continuous upward movement of the hook 6, when the upper end of the guide slide column 76 is moved to the horizontal alignment position of the detection part of the laser sensor 77, the distance measurement result obtained by the controller 2 changes, then the controller 2 starts the alarm 79 to sound an alarm, thereby warning the surrounding workers that the hook 6 is about to collide, and timely reminding the workers to turn off the hoisting motor 8 through the controller 2, thereby achieving the anti-collision effect of the hook 6, if the controller 2 fails and the workers cannot timely turn off the hoisting motor 8, with the upward movement of the hook 6 exceeding the predetermined stroke, the guide slide column 76 moves to the groove 781 and exerts an upward extrusion force on the conductive seat 786, so that the conductive seat 786 moves upward to separate from the conductive column one 782 and the conductive column two 783, the telescopic end of the telescopic column two 784 and the spring two 785 are retracted, thereby forcibly turning off the power supply circuit between the hoisting motor 8 and the controller 2, and further forcibly preventing the collision of the hook 6, which is convenient to use, after the guide slide column 76 extrudes and moves the conductive seat 786, the compression force of the spring two 785 enables the conductive seat 786 to automatically and conductively contact the conductive column one 782 and the conductive column two 783.
[0024] It is worth noting that the controller 2 disclosed in the above embodiment can adopt an LT-215AD key control panel, the laser sensor 77 can adopt a WH-LRF laser range finder, the alarm 79 can adopt a BC-809C, and the hoisting motor 8 can adopt a Y90S-2; the controller 2 controls the laser sensor 77, the alarm 79 and the hoisting motor 8 to work by using the method commonly used in the prior art.
[0025] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.
Claims
1. A crane with a hook anti-collision, characterized in that: The crane shell (1) and the multi-stage anti-top mechanism (7) are included. The crane shell (1) is internally rotatably connected with a wire drum (3) through a bearing, a hoisting rope (4) is arranged between the wire drum (3) and the crane shell (1), a movable pulley (5) is slidably connected to the lower end of the hoisting rope (4), and a lifting hook (6) is arranged at the lower end of the movable pulley (5). The multi-stage anti-top mechanism (7) includes a protection seat (71), a telescopic column (72), a spring (73), a contact seat (74), a guide sliding column (76), and a forced power-off protection assembly (78), the protection seat (71) is arranged on the outer side of the crane shell (1), the lower side of the protection seat (71) is provided with the contact seat (74) through two symmetrically distributed telescopic columns (72) and springs (73), the springs (73) are movably sleeved with the outer ends of the adjacent telescopic columns (72), the guide sliding column (76) is slidably connected in the rectangular groove on the lower side of the protection seat (71), the lower end of the guide sliding column (76) is fixedly connected with the contact seat (74), and the protection seat (71) is internally provided with the forced power-off protection assembly (78).
2. A crane with a hook anti-collision according to claim 1, characterized in that: A controller (2) is further included, the controller (2) is located outside the crane shell (1), and the input end of the controller (2) is electrically connected with an external power supply.
3. A crane with a hook anti-collision according to claim 1, characterized in that: The multi-stage anti-top mechanism (7) further includes a rubber pad (75), and the rubber pad (75) is arranged on the outer arc surface of the contact seat (74).
4. A crane with a hook anti-collision according to claim 2, characterized in that: The multi-stage anti-top mechanism (7) further includes a laser sensor (77) and an alarm (79), the laser sensor (77) is arranged on the left wall of the protection seat (71), the laser sensor (77) is bidirectionally electrically connected with the controller (2), the front side of the crane shell (1) is provided with the alarm (79), and the input end of the alarm (79) is electrically connected with the output end of the controller (2).
5. A crane with a hook anti-collision according to claim 2, characterized in that: The rear side of the crane shell (1) is provided with a hoisting motor (8), the input end of the hoisting motor (8) is electrically connected with the output end of the controller (2), and the output shaft of the hoisting motor (8) is fixedly connected with the rear end of the wire drum (3).
6. A crane with a hook anti-collision according to claim 5, characterized in that: The forced power-off protection assembly (78) includes a groove (781), a conductive column (782), a conductive column (783), a telescopic column (784), and a conductive seat (786), the groove (781) is arranged on the top wall of the protection seat (71), the left and right ends in the groove (781) are respectively provided with the conductive column (782) and the conductive column (783), the inside of the groove (781) is provided with the conductive seat (786) through the telescopic ends of the two telescopic columns (784), and the conductive column (782), the conductive column (783) and the conductive seat (786) are connected in series through a wire in the circuit between the hoisting motor (8) and the controller (2).
7. A crane with a hook anti-collision according to claim 6, characterized in that: The forced power-off protection assembly (78) further includes two springs (785), the two springs (785) are symmetrically arranged between the conductive seat (786) and the groove (781), and the springs (785) are movably sleeved with the outer ends of the adjacent telescopic columns (784).