Anti-swing system for container crane
By using the frequency conversion adjustment mechanism and wire rope group in the anti-swing system of the container crane, the anti-swing and micro-moving functions of the spreader are achieved, which solves the problems of unsatisfactory anti-swing effect of the container gantry crane equipment and the complex parts, and improves the handling effect of the spreader.
Patent Information
- Application Number
- CN202421464349.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-25
AI Technical Summary
The anti-shaking effect of the container gantry crane equipment is not ideal, and the conventional independent anti-shaking mechanism does not have the micro-moving function of the container spreader, resulting in complex parts.
An anti-swing system for container cranes is designed, including a spreader, a frequency conversion adjustment mechanism, a pulley set, a wire rope set and a rope barrel. The wire rope set is driven by a frequency conversion adjustment mechanism to perform rope laying or retracting operations, so as to reduce the swaying of the spreader, and adjust the position of the spreader or lifting object through a micro-movement function.
It effectively solves the problem of shaking when the spreader or lifting object moves, and improves the subtle control effect of the spreader or lifting object, simplifies the component structure.
Smart Images
Figure CN222684096U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hoisting systems, in particular to an anti-sway system for a container crane. Background Art
[0002] At present, the anti-sway effect of container gantry crane equipment is generally not ideal, and there is an urgent need for an anti-sway structure with better anti-sway effect and container spreader translation function.
[0003] Conventional independent anti-sway mechanisms generally have unsatisfactory anti-sway effects. This is mainly due to the slow response of the anti-sway force caused by the insensitive response of the rope reel. Commonly used anti-sway mechanisms do not have the micro-motion function of container spreaders and require additional parts, resulting in complex parts. Therefore, the utility model proposes an anti-sway system for container cranes that can solve the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide an anti-sway system for a container crane to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-sway system for a container crane, comprising a sling, a frequency conversion adjustment mechanism, a pulley block, a wire rope block and a rope drum, the wire rope block comprising a first wire rope, a second wire rope, a third wire rope and a fourth wire rope, one end of the first wire rope, the second wire rope, the third wire rope and the fourth wire rope are all fixedly connected to the rope drum, the frequency conversion adjustment mechanism comprises a first compensating drive member, a second compensating drive member, a third compensating drive member and a fourth compensating drive member, the pulley block comprises a first guide pulley, a second guide pulley, a third guide pulley and a fourth guide pulley located at a lower position, and a fifth guide pulley and a sixth guide pulley located at an upper position , and the seventh guide pulley, the first guide pulley, the second guide pulley, the third guide pulley and the fourth guide pulley are respectively installed at the four corners of the upper surface of the sling, the other end of the first steel wire rope is wound around the first guide pulley and installed on the first compensating drive member by its guiding direction, the other end of the second steel wire rope is wound around the second guide pulley and installed on the second compensating drive member by its guiding direction, the other end of the third steel wire rope is sequentially wound around the fifth guide pulley, the sixth guide pulley and the third guide pulley and extended to be installed on the third compensating drive member, the other end of the fourth steel wire rope is sequentially wound around the fifth guide pulley, the seventh guide pulley and the fourth guide pulley and extended to be installed on the fourth compensating drive member.
[0006] As a preferred technical solution of the utility model, the first compensation drive member, the second compensation drive member, the third compensation drive member, and the fourth compensation drive member all include a driving motor, a compensation drum is fixedly mounted on the output shaft of the driving motor, and the wire rope group is mounted on the compensation drum. When the driving motor drives the compensation drum to rotate, the wire rope group on the compensation drum will release or retract the rope.
[0007] As a preferred technical solution of the utility model, the drive motor is a three-in-one variable frequency motor.
[0008] As a preferred technical solution of the utility model, the first guide pulley, the second guide pulley, the third guide pulley, the fourth guide pulley, the sixth guide pulley and the seventh guide pulley are all arranged vertically, the fifth guide pulley is arranged horizontally, and the sixth guide pulley, the seventh guide pulley, the first guide pulley and the second guide pulley are located on the same vertical plane.
[0009] As a preferred technical solution of the utility model, the first guide pulley, the second guide pulley, the third guide pulley, the fourth guide pulley, the sixth guide pulley and the seventh guide pulley are all single-groove pulleys, and the fifth guide pulley is a double-groove pulley.
[0010] As a preferred technical solution of the utility model, the fifth guide pulley is provided with a first rope groove and a second rope groove, the fourth steel wire rope is wound on the second rope groove, and the third steel wire rope is wound in the first rope groove.
[0011] As a preferred technical solution of the utility model, it also includes a translation rail car installed on the gantry crane, and the rope drum, the fifth guide pulley, the sixth guide pulley, the seventh guide pulley and the frequency conversion adjustment mechanism are all installed on the lower surface of the translation rail car.
[0012] As a preferred technical solution of the utility model, mounting frames are installed at both ends of the rope drum, and the mounting frames are fixedly connected to the translation rail vehicle.
[0013] As a preferred technical solution of the utility model, a plurality of fixing pressing plates are installed on the rope drum, and the fixing pressing plates are used to fix the ends of the steel wire rope group.
[0014] As a preferred technical solution of the utility model, a hoisting object is installed at the bottom of the sling.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] The utility model discloses an anti-sway system for a container crane. By arranging a frequency conversion adjustment mechanism, a pulley block, a wire rope block and a rope drum on the spreader, when the translation rail car is horizontally displaced and the spreader shakes, the frequency conversion adjustment mechanism is used to drive the wire rope block to release or reel in the rope, thereby achieving the purpose of reducing the sway of the spreader and effectively solving the problem of shaking of the spreader or the hoisted object when moving. In addition, by driving the frequency conversion adjustment mechanism on the same side or the frequency conversion adjustment mechanism at the diagonal position, the spreader or the hoisted object can be translated or rotated to adjust the angle, thereby achieving micro-adjustment of the position of the spreader or the hoisted object, greatly improving the subtle control effect of the spreader or the hoisted object.
[0017] Other features and advantages of the present invention will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 It is a front view structural schematic diagram of the utility model on a translation rail vehicle;
[0020] Figure 3 It is a rear view structural schematic diagram of the utility model on a translation rail vehicle;
[0021] Figure 4 This is a schematic diagram of the structure of the utility model when used on a gantry crane;
[0022] Figure 5 This is a schematic diagram of the structure of the fifth guide pulley of the utility model;
[0023] In the figure: 1. lifting device; 2. frequency conversion adjustment mechanism; 21. first compensating drive member; 22. second compensating drive member; 23. third compensating drive member; 24. fourth compensating drive member; 3. pulley block; 31. first guide pulley; 32. second guide pulley; 33. third guide pulley; 34. fourth guide pulley; 35. fifth guide pulley; 351. first rope groove; 352. second rope groove; 330. sixth guide pulley; 340. seventh guide pulley; 4. wire rope block; 41. first wire rope; 42. second wire rope; 43. third wire rope; 44. fourth wire rope; 5. rope drum; 51. mounting frame; 52. fixed pressure plate; 6. translation rail car; 7. gantry crane. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0027] See also Figure 1-5In the present embodiment, an anti-sway system for a container crane is provided, including a sling 1, a frequency conversion adjustment mechanism 2, a pulley block 3, a wire rope group 4 and a rope drum 5. A hoisting object is installed at the bottom of the sling 1. The wire rope group 4 includes a first wire rope 41, a second wire rope 42, a third wire rope 43, and a fourth wire rope 44. One end of the first wire rope 41, the second wire rope 42, the third wire rope 43, and the fourth wire rope 44 are all fixedly connected to the rope drum 5. A plurality of fixed pressing plates 52 are installed on the rope drum 5. The fixed pressing plates 52 are used to fix the ends of the wire rope group 4. The frequency conversion adjustment mechanism 2 includes a first compensating drive 21, a second compensating drive 22, a third compensating drive 23, and a fourth compensating drive 24. The pulley block 3 ... The first guide pulley 31, the second guide pulley 32, the third guide pulley 33, the fourth guide pulley 34 and the fifth guide pulley 35, the sixth guide pulley 330, and the seventh guide pulley 340 located at the upper position, the first guide pulley 31, the second guide pulley 32, the third guide pulley 33, and the fourth guide pulley 34 are respectively installed at the four corners of the upper surface of the sling 1, the other end of the first steel wire rope 41 is wound around the first guide pulley 31 and installed on the first compensating drive member 21 by its guiding direction, the other end of the second steel wire rope 42 is wound around the second guide pulley 32 and installed on the second compensating drive member 22 by its guiding direction, the other end of the third steel wire rope 43 is wound around the fifth guide pulley 35, the sixth guide pulley 330, the third guide pulley 340 in sequence The first compensating drive 21, the second compensating drive 22, the third compensating drive 23, and the fourth compensating drive 24 are respectively wound around the fifth guide pulley 35, the seventh guide pulley 340, and the fourth guide pulley 34 and are extended and installed on the fourth compensating drive 24. The first compensating drive 21, the second compensating drive 22, the third compensating drive 23, and the fourth compensating drive 24 all include a driving motor, and a compensating drum is fixedly installed on the output shaft of the driving motor. The wire rope group 4 is installed on the compensating drum. When the driving motor drives the compensating drum to rotate, the wire rope group 4 on the compensating drum will release or retract the rope. The driving motor is a three-in-one variable frequency motor. The first guide pulley 31, the second guide pulley 32, the third guide pulley 33, and the fourth guide pulley The pulley 34, the sixth guide pulley 330, and the seventh guide pulley 340 are all arranged vertically, and the fifth guide pulley 35 is arranged horizontally. The sixth guide pulley 330, the seventh guide pulley 340, the first guide pulley 31, and the second guide pulley 32 are located on the same vertical plane. The first guide pulley 31, the second guide pulley 32, the third guide pulley 33, the fourth guide pulley 34, the sixth guide pulley 330, and the seventh guide pulley 340 are all single-groove pulleys, and the fifth guide pulley 35 is a double-groove pulley. The fifth guide pulley 35 is provided with a first rope groove 351 and a second rope groove 352, the fourth steel wire rope 44 is wound around the second rope groove 352, and the third steel wire rope 43 is wound around the first rope groove 351, and also includes a translation rail car 6 installed on the gantry crane 7.The rope drum 5, the fifth guide pulley 35, the sixth guide pulley 330, the seventh guide pulley 340 and the frequency conversion adjustment mechanism 2 are all installed on the lower surface of the translation rail vehicle 6, the first compensation drive 21, the second compensation drive 22, the third compensation drive 23, and the fourth compensation drive 24 are respectively installed at the four corners of the lower surface of the translation rail vehicle 6, and the two ends of the rope drum 5 are installed with mounting frames 51, wherein the rope drum 5 and the mounting frame 51 can be fixedly connected or rotatably connected. When the sway reduction is performed, the three-in-one frequency conversion electric The machine applies a torque that varies with the weight and height of the lifting, and applies a certain pulling force to the wire rope group 4 to achieve the anti-sway function; when performing micro-adjustment operations, the rope can be retracted by driving the variable frequency adjustment mechanism 2 on the same side, and the sling 1 or the hoisted object can be translated. The translation here is usually fine-tuned within a range of 250mm; when the diagonal variable frequency adjustment mechanism 2 is driven to retract the rope, the sling 1 or the hoisted object can be adjusted in rotation angle; when the rope drum 5 and the mounting frame 51 are rotatably connected, the rope drum 5 and the gantry crane are up and down, The main motor of the hoisting drive is linked by a chain; when the frequency conversion adjustment mechanism 2 performs anti-sway or micro-adjustment, since the operation amplitude is small and the wire rope group 4 is not in a fully tensioned state, it has a certain elastic amplitude greater than the operation amplitude. Therefore, when the frequency conversion adjustment mechanism 2 performs anti-sway or micro-adjustment, the rope drum 5 will not rotate at this time, and the mounting frame 51 is fixedly connected to the translation rail vehicle 6. By arranging the frequency conversion adjustment mechanism 2, the pulley group 3, the wire rope group 4 and the rope drum 5 on the hoisting device 1, the translation rail vehicle 6 can be When the trolley 6 moves horizontally and the hoist 1 shakes, the frequency conversion adjustment mechanism 2 is used to drive the wire rope group 4 to release or retract the rope, which can achieve the purpose of reducing the shaking of the hoist 1 and effectively solve the problem of shaking when the hoist 1 or the hoisted object moves. In addition, by driving the frequency conversion adjustment mechanism 2 on the same side or the frequency conversion adjustment mechanism 2 at the diagonal position, the hoist 1 or the hoisted object can be translated or rotated to adjust the angle, thereby achieving micro-adjustment of the position of the hoist 1 or the hoisted object, greatly improving the subtle control effect of the hoist 1 or the hoisted object.
[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An anti-sway system for a container crane, characterized in that: The invention comprises a sling (1), a frequency conversion adjustment mechanism (2), a pulley block (3), a wire rope block (4) and a rope drum (5), wherein the wire rope block (4) comprises a first wire rope (41), a second wire rope (42), a third wire rope (43) and a fourth wire rope (44), one end of each of the first wire rope (41), the second wire rope (42), the third wire rope (43) and the fourth wire rope (44) is fixedly connected to the rope drum (5), the frequency conversion adjustment mechanism (2) comprises a first compensation drive member (21), a second compensation drive member (22), a third compensation drive member (23) and a fourth compensation drive member (24), the pulley block (3) comprises a first guide pulley (31), a second guide pulley (32), a third guide pulley (33) and a fourth guide pulley (34) located at a lower position, and a fifth guide pulley (35), a sixth guide pulley (330) and a seventh guide pulley (340) located at an upper position, wherein the first wire rope (41), the second wire rope (42), the third wire rope (43) and the fourth wire rope (44) are fixedly connected to the rope drum (5), the frequency conversion adjustment mechanism (2) comprises a first compensation drive member (21), a second compensation drive member (22), a third compensation drive member (23) and a fourth compensation drive member (24), the pulley block (3) comprises a first guide pulley (31), a second guide pulley (32), a third guide pulley (33) and a fourth guide pulley (34) located at a lower position, and a fifth guide pulley (35), a sixth guide pulley (330) and a seventh guide pulley (340) located at an upper position, The first guide pulley (31), the second guide pulley (32), the third guide pulley (33) and the fourth guide pulley (34) are respectively installed at the four corners of the upper surface of the sling (1); the other end of the first steel wire rope (41) is wound around the first guide pulley (31) and is installed on the first compensating drive member (21) in its guiding direction; the other end of the second steel wire rope (42) is wound around the second guide pulley (32) and is installed on the second compensating drive member (22) in its guiding direction; the other end of the third steel wire rope (43) is sequentially wound around the fifth guide pulley (35), the sixth guide pulley (330) and the third guide pulley (33) and is extended to be installed on the third compensating drive member (23); the other end of the fourth steel wire rope (44) is sequentially wound around the fifth guide pulley (35), the seventh guide pulley (340) and the fourth guide pulley (34) and is extended to be installed on the fourth compensating drive member (24).
2. The anti-sway system for a container crane according to claim 1, characterized in that: The first compensating driving member (21), the second compensating driving member (22), the third compensating driving member (23), and the fourth compensating driving member (24) all include a driving motor, a compensating drum is fixedly mounted on the output shaft of the driving motor, and the wire rope group (4) is mounted on the compensating drum. When the driving motor drives the compensating drum to rotate, the wire rope group (4) on the compensating drum will release or retract the rope.
3. The anti-sway system for a container crane according to claim 2, characterized in that: The driving motor is a three-in-one variable frequency motor.
4. The anti-sway system for a container crane according to claim 1, characterized in that: The first guide pulley (31), the second guide pulley (32), the third guide pulley (33), the fourth guide pulley (34), the sixth guide pulley (330), and the seventh guide pulley (340) are all arranged vertically, the fifth guide pulley (35) is arranged horizontally, and the sixth guide pulley (330), the seventh guide pulley (340), the first guide pulley (31), and the second guide pulley (32) are located on the same vertical plane.
5. The anti-sway system for a container crane according to claim 4, characterized in that: The first guide pulley (31), the second guide pulley (32), the third guide pulley (33), the fourth guide pulley (34), the sixth guide pulley (330), and the seventh guide pulley (340) are all single-groove pulleys, and the fifth guide pulley (35) is a double-groove pulley.
6. The anti-sway system for a container crane according to claim 5, characterized in that: The fifth guide pulley (35) is provided with a first rope groove (351) and a second rope groove (352), the fourth steel wire rope (44) is wound around the second rope groove (352), and the third steel wire rope (43) is wound inside the first rope groove (351).
7. The anti-sway system for a container crane according to claim 1, characterized in that: It also includes a translation rail car (6) installed on the gantry crane (7), and the rope drum (5), the fifth guide pulley (35), the sixth guide pulley (330), the seventh guide pulley (340) and the frequency conversion adjustment mechanism (2) are all installed on the lower surface of the translation rail car (6).
8. The anti-sway system for a container crane according to claim 7, characterized in that: Mounting frames (51) are installed at both ends of the rope drum (5), and the mounting frames (51) are fixedly connected to the translation rail vehicle (6).
9. The anti-sway system for a container crane according to claim 8, characterized in that: A plurality of fixing pressing plates (52) are installed on the rope drum (5), and the fixing pressing plates (52) are used to fix the ends of the steel wire rope group (4).
10. The anti-sway system for a container crane according to claim 1, characterized in that: A hoisting object is installed at the bottom of the hoisting device (1).