A container crane hoisting wire rope anti-sway system

Abstract

The invention discloses a container crane hoisting wire rope anti-sway system, including a trolley frame and a sling frame; a connecting support is arranged at each of the four ends of the upper surface of the sling frame; a wire rope is connected to each wire rope connector, and the other end of each wire rope is wound on the hoisting drum after passing over the respective hoisting pulley; when the T-frame is horizontal, the two wire ropes between the two wire rope connectors on each T-frame and the respective corresponding hoisting pulleys form two waists of an isosceles trapezoid; a spring damping mechanism is arranged between the bottom of the two ends of the T-frame and the moving support. When the T-frame of the invention is horizontal, four congruent isosceles trapezoids with stable motion functions are formed on the four faces of front, back, left and right. When the trolley or the trolley is moving and braking, the four congruent isosceles trapezoids are like four mechanical arms, and through mutual geometric constraints, they firmly lock the sling frame, thereby reducing the amplitude of the sling, the sling frame and the container shaking during container operation.

Description

Technical Field

[0001] The invention belongs to the technical field of cranes, and in particular relates to a lifting wire rope anti-sway system for a container crane. Background Art

[0002] Container crane is a kind of port machinery, which refers to the bridge-type handling equipment used in the cargo stacking area.

[0003] The container crane adopts the crane lifting wire rope system when lifting or unloading the container. The crane lifting wire rope system usually includes a lifting wire rope drum and a sling frame. The lifting wire rope drum is wound with a wire rope, and the end of the wire rope is connected to the sling frame. When in use, the sling frame and the sling are connected to the container, and the lifting wire rope drum rotates to realize the winding or loosening of the wire rope, thereby realizing the raising or lowering of the container.

[0004] However, when the current cranes brake when the large or small truck is moving, the lifting device carrying the container is prone to swing due to inertia, resulting in inaccurate positioning of the stacked goods. The driver spends more time in the process of aligning the containers, resulting in a low loading and unloading rate. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a container crane hoisting wire rope anti-sway system.

[0006] To achieve the above object, the present invention adopts the following technical solution:

[0007] A container crane hoisting wire rope anti-sway system comprises a trolley frame and a sling upper frame located below the trolley frame;

[0008] A connecting support is provided at each of the four ends of the upper surface of the sling upper frame, and the connecting support includes a movable support connected to the sling upper frame, a T-frame is provided on the upper part of the movable support, and wire rope connectors are symmetrically provided at both ends of the upper part of the T-frame; the top of the movable support is hingedly connected to the bottom of the T-frame; a spring damping mechanism is provided between the bottom of both ends of the T-frame and the movable support;

[0009] The two steel wire rope connectors on the T-shaped frames at the left and right ends of the upper frame of the sling are distributed along the front-to-back direction, and the two steel wire rope connectors on the T-shaped frames at the front and rear ends of the upper frame of the sling are distributed along the left-to-right direction;

[0010] Each wire rope connector is connected to a wire rope, and the other end of each wire rope passes upward over the respective lifting pulley and is wound around the lifting drum; the lifting pulley and the lifting drum are both arranged on the trolley frame;

[0011] When the T-frame is horizontal, the two steel wire ropes between the two steel wire rope connectors on each T-frame and the corresponding lifting pulleys form two waists of an isosceles trapezoid; the two isosceles trapezoids on the two opposite T-frames are symmetrically arranged, and the angle between the isosceles trapezoids on the left and right T-frames and the plumb plane extending in the front-to-back direction is equal to the angle between the isosceles trapezoids on the front and rear T-frames and the plumb plane extending in the left-to-right direction; the four isosceles trapezoids on the four T-frames remain congruent when the T-frame is in a horizontal state.

[0012] Preferably, the central axis of the lifting drum extends in the front-rear direction;

[0013] The central axis of the lifting pulley connected to the steel wire ropes on the left and right ends of the T-shaped frames of the sling upper frame extends in the left and right directions;

[0014] The central axis of the lifting pulley connected to the steel wire rope on the T-shaped frames at the front and rear ends of the upper frame of the sling extends in the front-to-back direction;

[0015] The steel wire ropes connected to the T-shaped frames at the left and right ends of the upper frame of the sling are passed upwards over the respective lifting pulleys and the respective guide pulleys in turn and then wound around the lifting drum;

[0016] The guide pulley is arranged on the trolley frame.

[0017] Preferably, the steel wire rope connected to the left steel wire rope connector on the T-shaped frame at the front and rear ends of the sling upper frame and the steel wire rope connected to the two steel wire rope connectors on the T-shaped frame at the left end of the sling upper frame have the same winding direction on the lifting drum;

[0018] The winding directions of the steel wire ropes connected to the right steel wire rope connectors on the T-shaped frames at the front and rear ends of the hoisting device and the steel wire ropes connected to the two steel wire rope connectors on the T-shaped frames at the right end of the hoisting device are consistent on the lifting drum.

[0019] Preferably, the spring damping mechanism comprises a pad and a base arranged in parallel up and down, and the pad is located on the upper part of the base;

[0020] A stud extending downward is provided at the bottom of the pad, and the lower end of the stud passes through the base; an adjusting nut is provided on the stud at the lower part of the base;

[0021] The stud between the pad and the base is sleeved with a disc spring;

[0022] A limiting member is disposed on the upper portion of the base, and the limiting member is located outside the disc spring;

[0023] The pad is against the end of the T-shaped frame, and the base is fixedly arranged on the side wall of the movable support; when the T-shaped frame is horizontal, a buffer space is left between the bottom of the pad and the top of the limiting member.

[0024] Preferably, the limiting member comprises an annular limiting plate and a rectangular limiting plate which are connected inside and outside; four sliders extending in the vertical direction are evenly arranged on the outer side wall of the annular limiting plate along the circumferential direction, and a sliding groove for slidingly cooperating with the corresponding slider is arranged on the inner side wall of the rectangular limiting plate;

[0025] The bottom of the annular limiting plate is fixedly connected to the base;

[0026] The base is provided with an adjusting mechanism for controlling the lifting and lowering of the rectangular limiting plate.

[0027] Preferably, the adjustment mechanism is two adjustment cylinders respectively located at two ends of the base;

[0028] Lifting plates are symmetrically arranged on both sides of the rectangular limiting plate;

[0029] The bottom end of the regulating cylinder is fixedly connected to the base, and the piston rod end of the regulating cylinder is upwardly connected to the corresponding lifting plate.

[0030] Preferably, a crossbeam is provided at the position where the movable support is provided on the upper frame of the sling, and the bottoms of both ends of the crossbeam are hinged to the upper frame of the sling through hinge shafts;

[0031] The cross beams at the left and right ends of the upper frame of the sling extend in the front-to-back direction; the bottoms of the cross beams at the left and right ends of the upper frame of the sling are provided with slide rails extending in the front-to-back direction;

[0032] The cross beams at the front and rear ends of the sling frame extend in the left-right direction; the bottoms of the cross beams at the front and rear ends of the sling frame are provided with slide rails extending in the left-right direction;

[0033] The bottom of the movable support is provided with a sliding block which cooperates with the sliding rail at the bottom of the corresponding beam;

[0034] A screw rod is disposed at one end of the crossbeam, and a motor is disposed at the end of the screw rod;

[0035] A nut threadedly connected to the lead screw is arranged inside the movable support.

[0036] Preferably, the lifting drum is provided as one, and the lifting drum is located in the middle of the trolley frame;

[0037] The winding directions of eight steel wire ropes connected by four T-shaped frames on the upper frame of the sling are consistent on the lifting drum.

[0038] Preferably, the lifting drums are provided in two and are arranged in parallel on the left and right sides;

[0039] The steel wire rope connected to the left steel wire rope connector on the T-shaped frame at the front and rear ends of the sling upper frame and the steel wire rope connected to the two steel wire rope connectors on the T-shaped frame at the left end of the sling upper frame are wound around the lifting drum on the left side;

[0040] The steel wire rope connected to the right steel wire rope connector on the T-shaped frame at the front and rear ends of the sling frame and the steel wire rope connected to the two steel wire rope connectors on the T-shaped frame at the right end of the sling frame are wound around the lifting drum on the right side.

[0041] The beneficial effects of the present invention are:

[0042] (1) The winding method of the steel wire rope in the anti-sway system of the lifting steel wire rope of the container crane of the present invention forms four congruent isosceles trapezoids with stable movement functions on the four planes of front, back, left and right when the T-frame is horizontal. The waist of the trapezoid is the steel wire rope connecting the lifting pulley on the trolley frame and the steel wire rope connector on the sling frame. The four isosceles trapezoids remain congruent during the rotation of the lifting drum, and the height of the plumb bob caused by the change in waist length is also consistent, thereby ensuring the consistency of the height of the four ends of the sling frame and achieving smooth ascent or descent. When the crane is braking while the trolley or car is moving, the four congruent isosceles trapezoids are like four mechanical arms, through the geometric approximation between each other. The spring restraint locks the spreader frame firmly, which can reduce the swing amplitude of the spreader, the spreader frame and the container during container operation, shorten the stacking or transshipment cycle of each container, and ultimately achieve the purpose of improving operation efficiency; and when the T-frame swings, due to the setting of the spring damping mechanism, the T-frame can only swing within the allowed buffer space. Therefore, when the T-frame swings and is not in a horizontal state, the four trapezoids can be identified as four approximate isosceles trapezoids within the engineering error range. These four trapezoids basically remain congruent during the rotation of the lifting drum. Therefore, they can achieve a smooth rise or fall within the engineering error range, and can also reduce the swing amplitude of the container.

[0043] (2) The arrangement of the movable support, the crossbeam and the screw rod in the lifting wire rope anti-sway system of the container crane of the present invention realizes the micro-translation of the sling frame in the front-to-back direction, the micro-translation in the left-to-right direction and the micro-rotation function, thereby playing a role in adjusting the position of the sling frame, which can ensure rapid alignment of the containers during loading and unloading, and improve the operation efficiency of loading and unloading containers.

[0044] (3) The setting of the spring damping mechanism in the anti-sway system of the lifting wire rope of the container crane of the present invention restrains the swing of the T-frame, thereby solving the problem of large swing of the T-frame caused by the unbalanced force on the two wire ropes connected to the T-frame; at the same time, the setting of the buffer space in the present application allows the T-frame to swing appropriately to adapt to the unbalanced force on the wire rope, thereby preventing the wire rope from being damaged by excessive force and affecting its life. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0046] Figure 1 1 is a schematic top view of the structure of the container crane hoisting wire rope anti-sway system in embodiment 1 of the present invention;

[0047] Figure 2 This is a schematic front view of the structure of the anti-sway system for hoisting wire ropes of a container crane in Embodiment 1 of the present invention;

[0048] Figure 3 Schematic diagram of the winding principle of the steel wire rope in the hoisting steel wire rope anti-sway system of the container crane in Embodiment 1 of the present invention;

[0049] Figure 4 is a schematic top view of the structure of the container crane hoisting wire rope anti-sway system in embodiment 2 of the present invention;

[0050] Figure 5 This is a schematic front view of the structure of the anti-sway system for hoisting wire ropes of a container crane in Embodiment 2 of the present invention;

[0051] Figure 6 Schematic diagram of the winding principle of the steel wire rope in the lifting steel wire rope anti-sway system of the container crane in Embodiment 2 of the present invention;

[0052] Figure 7 It is a schematic diagram of the structure of the T-shaped frame in the present invention;

[0053] Figure 8 It is a structural schematic diagram of the spring damping mechanism in the present invention;

[0054] Fig. 9 It is a schematic structural stereogram of the spring damping mechanism when the buffer space height is adjustable in the present invention;

[0055] Fig.10 It is a schematic diagram of the internal structure of the spring damping mechanism when the buffer space height is adjustable in the present invention;

[0056] Fig.11 It is a schematic front view of the structure of the spring damping mechanism when the buffer space height is adjustable in the present invention;

[0057] Fig.12 yes Fig.11 AA section view;

[0058] in,

[0059] 1-trolley frame, 2-hoisting device frame, 3-movable support, 4-T-frame, 401-wire rope connector, 5-wire rope, 6-lifting pulley, 7-lifting drum, 8-guide pulley, 9-crossbeam, 901-articulated shaft, 10-motor, 11-spring damping mechanism, 1101-pad, 1102-base, 1103-stud, 1104-adjusting nut, 1105-disc spring, 1106-limiting piece, 1107-buffer space, 1108-annular limiting plate, 1109-rectangular limiting plate, 1110-slider, 1111-slide, 1112-slide groove, 1113-adjusting cylinder, 1113-lifting plate. DETAILED DESCRIPTION

[0060] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0061] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0062] In the present invention, the directions or positional relationships indicated by terms such as "front", "rear", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to any part or element in the present invention and should not be understood as limitations on the present invention.

[0063] In the present invention, terms such as "connected" and "connection" should be understood in a broad sense, indicating that the connection can be fixed, integral or detachable; it can be directly connected or indirectly connected through an intermediate medium. Relevant scientific research or technical personnel in this field can determine the specific meaning of the above terms in the present invention according to specific circumstances, and they should not be understood as limiting the present invention.

[0064] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0065] Embodiment 1:

[0066] like Figure 1-3 As shown, a lifting wire rope anti-sway system for a container crane includes a trolley frame 1 and a sling upper frame 2 located below the trolley frame 1;

[0067] The four ends of the upper surface of the sling upper frame 2 are each provided with a connecting support. Figure 7 As shown, the connecting support includes a movable support 3 connected to the upper frame 2 of the sling, a T-frame 4 is arranged on the upper part of the movable support 3, and wire rope connectors 401 are symmetrically arranged at both ends of the upper part of the T-frame 4; the top of the movable support 3 is hingedly connected to the bottom of the T-frame 4; a spring damping mechanism 11 is arranged between the bottoms of both ends of the T-frame 4 and the movable support 3, and the setting of the spring damping mechanism 11 constrains the swing of the T-frame 4, thereby solving the problem that the two wire ropes 5 connected to the T-frame 4 are subjected to unbalanced force and cause the T-frame 4 to swing greatly. Once the T-frame 4 swings greatly, it will destroy the formation of the isosceles trapezoid, so that the upper frame 2 of the sling will swing when the trolley or car is walking and braking;

[0068] The two wire rope connectors 401 on the T-shaped frames 4 at the left and right ends of the upper frame 2 of the sling are distributed along the front-to-back direction, and the two wire rope connectors 401 on the T-shaped frames 4 at the front and rear ends of the upper frame 2 of the sling are distributed along the left-to-right direction;

[0069] Each wire rope connector 401 is connected to a wire rope 5, and the other end of each wire rope 5 passes upward over the respective lifting pulley 6 and is wound on the lifting drum 7; the lifting pulley 6 and the lifting drum 7 are both arranged on the trolley frame 1;

[0070] When the T-frame 4 is horizontal, the two steel wire ropes 5 between the two steel wire rope connectors 401 on each T-frame 4 and the respective corresponding lifting pulleys 6 form two waists of an isosceles trapezoid, that is, the two steel wire rope connectors 401 on each T-frame 4, the lifting pulleys 6 corresponding to the corresponding steel wire rope connectors 401, and the two steel wire ropes 5 between the steel wire rope connectors 401 and the respective corresponding lifting pulleys 6 form an isosceles trapezoid; the two isosceles trapezoids where the steel wire ropes on the two opposite T-frames 4 are located are symmetrically arranged, and the angle between the isosceles trapezoids where the steel wire ropes on the left and right T-frames 4 are located and the plumb plane extending in the front and rear directions is equal to the angle between the isosceles trapezoids where the steel wire ropes on the front and rear T-frames 4 are located and the plumb plane extending in the left and right directions; the four isosceles trapezoids where the steel wire ropes on the four T-frames 4 are located remain congruent when the T-frame is in a horizontal state. This arrangement is to ensure that when the waist lengths of the four isosceles trapezoids change in unison, the heights of the plumb bobs caused by the waist length changes are also consistent, thereby ensuring the consistency of the heights of the four ends of the sling upper frame 2 and achieving a smooth rise or fall.

[0071] During the specific installation process, the angle between the isosceles trapezoid where the steel wire rope is located on the left and right T-frames and the plumb plane extending in the front-to-back direction, and the angle between the isosceles trapezoid where the steel wire rope is located on the front and rear T-frames and the plumb plane extending in the left-to-right direction are usually set to 0, that is, the left and right isosceles trapezoids are located on two plumb planes extending in the front-to-back direction, and the front and rear isosceles trapezoids are located on two plumb planes extending in the left-to-right direction.

[0072] After the eight steel ropes 5 are wound in this way, when the T-frame 4 is in a horizontal position, four congruent isosceles trapezoids with stable movement functions are formed on the four faces of front, back, left and right. The waist of the trapezoid is the steel rope connecting the lifting pulley 6 on the trolley frame 1 and the steel rope connector 401 on the sling frame 2. The four isosceles trapezoids remain congruent during the rotation of the lifting drum 7, and the height of the plumb bob caused by the change in waist length is also consistent, thereby ensuring the consistency of the height of the four ends of the sling frame 2 and achieving a smooth rise or fall; therefore, when the trolley or car is moving and braking, the four congruent isosceles trapezoids, like four mechanical arms, firmly lock the sling frame 2 through mutual geometric constraints, which can reduce the shaking amplitude of the sling, the sling frame 2 and the container during container operation, shorten the stacking or transshipment cycle of each container, and ultimately achieve the purpose of improving operating efficiency.

[0073] When the T-frame 4 swings, due to the setting of the spring damping mechanism, the swing angle range of the T-frame 4 is within the buffer space 117 allowed during the lifting process. Therefore, when the T-frame 4 swings and is not in a horizontal state, the four trapezoids can be identified as four approximate isosceles trapezoids within the engineering error range. These four trapezoids basically remain congruent during the rotation of the lifting drum 7. Therefore, a smooth rise or fall can be achieved within the engineering error range, and the amplitude of container shaking can also be reduced.

[0074] Preferably, the central axis of the lifting drum 7 extends in the front-rear direction;

[0075] The central axis of the lifting pulley 6 connected to the steel wire rope 5 on the T-shaped frame at the left and right ends of the sling upper frame 2 extends in the left-right direction; there are four lifting pulleys 6 with central axes extending in the left-right direction, which are distributed on the front and rear sides of the left and right ends of the trolley frame 1;

[0076] The central axis of the lifting pulley 6 connected to the steel wire rope 5 on the T-shaped frame at the front and rear ends of the upper frame 2 of the sling extends in the front-to-back direction; there are four lifting pulleys 6 with the central axis extending in the front-to-back direction, which are distributed on the left and right sides of the trolley frame 1 and are located on the inner side of the lifting pulley 6 with the central axis extending in the left-right direction;

[0077] The steel wire ropes 5 connected to the T-shaped frames at the left and right ends of the upper frame 2 of the sling are passed over the respective lifting pulleys 6 and the respective guide pulleys 8 in turn and then wound around the lifting drum 7; wherein there are four guide pulleys 8 in total and they are located on the inner side of the lifting pulley 6 whose central axis extends in the left-right direction;

[0078] The guide pulley 8 is arranged on the trolley frame 1 , and the direction of the guide pulley 8 can be set as long as it can guide the wire rope 5 so that it is easy to be wound on the lifting drum 7 .

[0079] The arrangement of each lifting pulley 6 and each guide pulley 8 in the embodiment 1 of the present application is as follows: Figure 1-2 As shown, they are arranged to form four congruent isosceles trapezoids, but the arrangement of each lifting pulley 6 and each guide pulley 8 is not limited to Figure 1-2 The method shown in the figure only requires that the winding of the wire rope can form four congruent isosceles trapezoids.

[0080] Preferably, the steel wire rope 5 connected to the left steel wire rope connector 401 on the T-shaped frame at the front and rear ends of the sling upper frame 2 and the steel wire rope 5 connected to the two steel wire rope connectors 401 on the T-shaped frame at the left end of the sling upper frame 2 are wound in the same direction on the lifting drum 7;

[0081] The winding directions of the steel wire rope 5 connected to the right steel wire rope connector 401 on the T-shaped frames at the front and rear ends of the sling frame 2 and the steel wire rope 5 connected to the two steel wire rope connectors 401 on the T-shaped frames at the right end of the sling frame 2 are consistent on the lifting drum 7.

[0082] Preferably, Figure 8 As shown, the spring damping mechanism 11 includes a pad 1101 and a base 1102 which are arranged in parallel up and down, and the pad 1101 is located on the upper part of the base 1102;

[0083] The bottom of the pad 1101 is provided with a stud 1103 extending downward, and the lower end of the stud 1103 passes through the base 1102. Specifically, the base 1102 is provided with a through hole for the stud 1103 to pass through; the stud 1103 at the lower part of the base 1101 is provided with an adjusting nut 1104;

[0084] The stud 1103 between the pad 1101 and the base 1102 is sleeved with a disc spring 1105;

[0085] A limiting member 1106 is disposed on the upper portion of the base 1102 , and the limiting member 1106 is located outside the disc spring 1105 ;

[0086] The pad 1101 is against the bottom of both ends of the T-frame 4, and the base 1102 is fixedly arranged on the side wall of the movable support 3; when the T-frame 4 is horizontal, a buffer space 1107 is left between the bottom of the pad 1101 and the top of the limiter 1106. Specifically, the height of the buffer space 1107 is set according to on-site requirements, usually set to 5 mm, that is, the spring damping mechanism 11 in the present application allows the T-frame 4 to swing within the range of this buffer space 1107 to adapt to the situation where the wire rope is subjected to uneven force, so as to prevent the wire rope from being damaged due to excessive force and affecting its life.

[0087] The spring damping mechanism 11 of the present application is arranged between the bottom of both ends of the T-frame 4 and the movable support 3. The elastic force of the disc spring 1105 presses the pad 1101 against the end of the T-frame 4, thereby restraining the swing of the T-frame 4; at the same time, when the two steel wire ropes connected to the T-frame 4 are subjected to uneven force, the setting of the buffer space 1107 in the present application allows the T-frame 4 to swing appropriately to adapt to the uneven force on the steel wire ropes, thereby preventing the steel wire ropes from being damaged due to excessive force and affecting their lifespan.

[0088] Preferably, Figure 9-12 As shown, the limiting member 1106 includes an annular limiting plate 1108 and a rectangular limiting plate 1109 which are connected inside and outside; four sliders 1110 extending in the vertical direction are evenly arranged on the outer wall of the annular limiting plate 1108 along the circumferential direction, and a slide groove 1111 for slidingly cooperating with the corresponding slider 1110 is arranged on the inner wall of the rectangular limiting plate 1109; specifically, the slider 1110 is a T-shaped slider, and the slide groove 1111 is a T-shaped slide groove;

[0089] The bottom of the annular limiting plate 1108 is fixedly connected to the base 1102;

[0090] The base 1102 is provided with an adjusting mechanism for controlling the lifting and lowering of the rectangular limiting plate 1109 .

[0091] This application Figure 9-12 The spring damper mechanism shown in Figure 8 On the basis of the spring damping mechanism shown, the limit member 1106 is set as an annular limit plate 1108 and a rectangular limit plate 1109 which are connected inside and outside. The rectangular limit plate 1109 can slide up and down under the control of the adjustment mechanism, so as to adjust the height of the buffer space 1107. That is, the height of the buffer space 1107 can be adjusted according to the actual needs on site, so as to adjust the allowable swing range of the T-frame 4, thereby increasing the scope of application of the present application.

[0092] Preferably, Figure 9-12 As shown, the adjustment mechanism is two adjustment cylinders 1112 respectively located at both ends of the base 1102;

[0093] Lifting plates 1113 are symmetrically arranged on both sides of the rectangular limiting plate 1109;

[0094] The bottom end of the regulating cylinder 1112 is fixedly connected to the base 1102 , and the end of the piston rod of the regulating cylinder 1112 is upwardly connected to the corresponding lifting plate 1113 .

[0095] The adjusting mechanism is not limited to the adjusting cylinder 112 described in the present application, and any mechanism that can control the up and down movement of the rectangular limiting plate 1109 can be used as the adjusting mechanism.

[0096] Preferably, a crossbeam 9 is provided at the position where the movable support 3 is provided on the hanger upper frame 2, and the bottoms of both ends of the crossbeam 9 are hinged to the hanger upper frame 2 through hinge shafts 901;

[0097] The cross beams 9 at the left and right ends of the hanger upper frame 2 extend in the front-to-back direction; the bottoms of the cross beams 9 at the left and right ends of the hanger upper frame 2 are provided with slide rails extending in the front-to-back direction;

[0098] The cross beams 9 at the front and rear ends of the sling frame 2 extend in the left-right direction; the bottoms of the cross beams 9 at the front and rear ends of the sling frame 2 are provided with slide rails extending in the left-right direction;

[0099] The bottom of the movable support 3 is provided with a slider that cooperates with the bottom slide rail of the corresponding beam 9;

[0100] A screw rod is disposed at one end of the crossbeam 9, and a motor 10 is disposed at the end of the screw rod;

[0101] The movable support 3 is provided with a nut threadedly connected to the screw rod. The motor 10 drives the screw rod to rotate. Under the sliding limit cooperation between the slider at the bottom of the movable support 3 and the slide rail at the bottom of the beam 9 and the thread cooperation between the screw rod and the nut, the relative movement between the movable support 3 and the upper frame 2 of the sling is realized when the screw rod rotates.

[0102] Preferably, the lifting drum 7 is configured as one, such as Figure 1-3 As shown, the lifting drum 7 is located in the middle of the trolley frame 1;

[0103] The winding directions of the eight steel wire ropes 5 connected to the four T-shaped frames on the upper frame 2 of the sling are consistent on the lifting drum 7.

[0104] Such a winding method can achieve: when the lifting drum 7 rotates, the eight steel ropes 5 can be tightened or loosened synchronously.

[0105] At this time, the directions of the four guide pulleys 8 are as follows: Figure 1-2As shown, the central axis of the two guide pulleys 8 on the left side extends in the vertical direction, and the two steel wire ropes 5 on the left end T-frame are guided by their respective guide pulleys 8 on the left side and then wound counterclockwise from the bottom of the lifting drum 7, while the steel wire ropes on the left side of the front and rear end T-frames are also wound counterclockwise from the bottom of the lifting drum 7 after passing over their respective lifting pulleys 6; the central axis of the two guide pulleys 8 on the right end has a certain angle with the vertical direction, so that the two steel wire ropes 5 on the right end T-frame are guided by their respective guide pulleys 8 on the right side and then wound counterclockwise from the top of the lifting drum 7, while the steel wire ropes 5 on the right side of the front and rear end T-frames are also wound counterclockwise from the top of the lifting drum 7 after passing over their respective lifting pulleys 6. At this time, when the lifting drum 7 rotates counterclockwise, the hoisting device upper frame 2 rises.

[0106] At the same time, the guide pulleys 8 on the left and right sides can be swapped, so that the two steel wire ropes 5 on the left T-frame and the steel wire ropes 5 on the left side of the front and rear T-frames are wound clockwise from the top of the lifting drum 7, and the two steel wire ropes 5 on the right T-frame and the steel wire ropes 5 on the right side of the front and rear T-frames are wound clockwise from the bottom of the lifting drum 7. At this time, when the lifting drum 7 rotates clockwise, the sling upper frame 2 rises.

[0107] A container crane hoisting wire rope anti-sway system, the specific implementation method is as follows:

[0108] (1) Reduce the shaking amplitude of the lifting device during the lifting process

[0109] By rotating the lifting drum 7, the eight steel ropes 5 will be tightened or loosened synchronously to realize the rising or falling of the sling frame 2, and the tightened or loosened lengths of the eight steel ropes 5 are consistent, so that the four approximately isosceles trapezoids remain basically congruent during the rotation of the lifting drum 7; therefore, when the truck or car is moving and braking, the four basically congruent isosceles trapezoids, like four mechanical arms, firmly lock the sling frame 2 through mutual geometric constraints, which can minimize the shaking amplitude of the sling, the sling frame 2 and the container during container operation, shorten the stacking or transshipment period of each container, and ultimately achieve the purpose of improving operating efficiency.

[0110] (2) Micro-movement of the upper frame 2 in the front and rear directions

[0111] Start the motors 10 at the left and right ends of the hoist frame 2 to rotate the corresponding screw rods to apply force to the movable support 3. Due to the action of the T-frame 4 on the movable support 3 and the connected wire rope, the position of the movable support 3 remains unchanged. Under the reaction force of the movable support 3 and the cooperation between the slider on the movable support 3 and the slide rail on the beam 9, the beam 9 and the hoist frame 2 achieve micro-translation in the front and rear directions.

[0112] (3) Micro-movement of the upper frame 2 in the left and right directions

[0113] Start the motors 10 at the front and rear ends of the hoist frame 2 to rotate the corresponding screw rods to apply force to the movable support 3. Due to the action of the T-frame 4 on the movable support 3 and the connected wire rope, the position of the movable support 3 remains unchanged. Under the reaction force of the movable support 3 and the cooperation between the slider on the movable support 3 and the slide rail on the beam 9, the beam 9 and the hoist frame 2 achieve micro-translation in the left and right directions.

[0114] (4) Lifting device upper frame 2 micro-rotation

[0115] Through the coordinated action of the four motors 10 and the four lead screws, the hanger upper frame 2 can be rotated clockwise or counterclockwise.

[0116] Among them, the setting of the movable support 3, the crossbeam 9, and the screw rod in the present application realizes the micro-translation of the spreader frame 2 in the front and rear directions, the micro-translation in the left and right directions, and the micro-rotation function, thereby playing a role in adjusting the position of the spreader frame 2, which can ensure rapid alignment of containers during loading and unloading, and improve the operation efficiency of loading and unloading containers.

[0117] Embodiment 2:

[0118] The difference from the embodiment 1 is that the lifting drum 7 is provided in two and is arranged in parallel on the left and right sides. Figure 4-6 As shown;

[0119] The steel wire rope 5 connected to the left steel wire rope connector 401 on the T-shaped frame at the front and rear ends of the sling upper frame 2 and the steel wire rope 5 connected to the two steel wire rope connectors 401 on the left end T-shaped frame of the sling upper frame 2 are wound on the left lifting drum 7;

[0120] The steel wire rope 5 connected to the right steel wire rope connector 401 on the T-shaped frames at the front and rear ends of the sling upper frame 2 and the steel wire rope 5 connected to the two steel wire rope connectors 401 on the T-shaped frames at the right end of the sling upper frame 2 are wound around the lifting drum 7 on the right side.

[0121] The remaining technical features are the same as those in Example 1.

[0122] In Example 2, the winding directions of the two steel wire ropes 5 on the left end T-frame and the steel wire ropes 5 on the left side of the front and rear end T-frames and the winding directions of the two steel wire ropes 5 on the right end T-frame and the steel wire ropes 5 on the right side of the front and rear end T-frames can be the same or different.

[0123] When the winding directions are the same, for example, the four steel ropes 4 on one side rotate counterclockwise from the bottom of the lifting drum 7, and the four steel ropes 4 on the other side rotate counterclockwise from the top of the lifting drum 7. At this time, the two lifting drums 7 rotate in the same direction, so that the eight steel ropes can be tightened or loosened synchronously, thereby realizing the rising or falling of the sling frame 2.

[0124] When the winding direction is different, e.g. Figure 6 As shown, the four steel wire ropes 4 on the left side rotate counterclockwise from the bottom of the lifting drum 7, and the four steel wire ropes 4 on the right side rotate clockwise from the bottom of the lifting drum 7. At this time, the two lifting drums 7 rotate in different directions, so that the eight steel wire ropes can be tightened or loosened synchronously, thereby realizing the rising or falling of the sling frame 2.

[0125] When the spreader frame 2 is raised or lowered, the two lifting drums 7 are controlled to rotate to ensure that the eight steel ropes are tightened or loosened synchronously; at the same time, the linear speeds of the two lifting drums 7 are made the same to ensure that the eight steel ropes 5 are tightened or loosened to the same length, so that the four approximately isosceles trapezoids remain basically congruent during the rotation of the lifting drums 7; therefore, when the truck or car is moving and braking, the four basically congruent isosceles trapezoids, like four mechanical arms, firmly lock the spreader frame 2 through mutual geometric constraints, which can reduce the shaking amplitude of the spreader, the spreader frame 2 and the container during container operation, shorten the stacking or transshipment period of each container, and ultimately achieve the purpose of improving operating efficiency.

[0126] In the second embodiment, the micro-motion translation of the upper frame 2 of the sling in the front-to-back direction, the micro-motion translation of the upper frame 2 of the sling in the left-to-right direction, and the micro-motion rotation operation of the upper frame 2 of the sling are the same as those in the first embodiment.

[0127] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not a limitation of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the protection scope of the present invention.

Claims

1. A container crane hoisting wire rope anti-sway system, comprising a trolley frame and a sling upper frame located below the trolley frame; its characteristics are: A connecting support is provided at each of the four ends of the upper surface of the sling upper frame, and the connecting support includes a movable support connected to the sling upper frame, a T-frame is provided on the upper part of the movable support, and wire rope connectors are symmetrically provided at both ends of the upper part of the T-frame; the top of the movable support is hingedly connected to the bottom of the T-frame; a spring damping mechanism is provided between the bottom of both ends of the T-frame and the movable support; The two steel wire rope connectors on the T-shaped frames at the left and right ends of the upper frame of the sling are distributed along the front-to-back direction, and the two steel wire rope connectors on the T-shaped frames at the front and rear ends of the upper frame of the sling are distributed along the left-to-right direction; Each wire rope connector is connected to a wire rope, and the other end of each wire rope passes upward over the respective lifting pulley and is wound around the lifting drum; the lifting pulley and the lifting drum are both arranged on the trolley frame; When the T-frame is horizontal, the two steel wire ropes between the two steel wire rope connectors on each T-frame and the corresponding lifting pulleys form two waists of an isosceles trapezoid; the two isosceles trapezoids where the steel wire ropes on the two opposite T-frames are located are symmetrically arranged, and the angle between the isosceles trapezoids where the steel wire ropes on the left and right T-frames are located and the plumb plane extending in the front-to-back direction is equal to the angle between the isosceles trapezoids where the steel wire ropes on the front and rear T-frames are located and the plumb plane extending in the left-to-right direction; the four isosceles trapezoids where the steel wire ropes on the four T-frames are located remain congruent when the T-frame is in a horizontal state; The central axis of the lifting drum extends in the front-rear direction; The central axis of the lifting pulley connected to the steel wire ropes on the left and right ends of the T-shaped frames of the sling upper frame extends in the left and right directions; The central axis of the lifting pulley connected to the steel wire rope on the T-shaped frames at the front and rear ends of the upper frame of the sling extends in the front-to-back direction; The steel wire ropes connected to the T-shaped frames at the left and right ends of the upper frame of the sling are passed upwards over the respective lifting pulleys and the respective guide pulleys in turn and then wound around the lifting drum; The guide pulley is arranged on the trolley frame; The spring damping mechanism comprises a pad and a base which are arranged in parallel up and down, and the pad is located on the upper part of the base; A stud extending downward is provided at the bottom of the pad, and the lower end of the stud passes through the base; an adjusting nut is provided on the stud at the lower part of the base; The stud between the pad and the base is sleeved with a disc spring; A limiting member is disposed on the upper portion of the base, and the limiting member is located outside the disc spring; The pad is against the end of the T-shaped frame, and the base is fixedly arranged on the side wall of the movable support; when the T-shaped frame is horizontal, a buffer space is reserved between the bottom of the pad and the top of the limiting member.

2. The container crane hoisting wire rope anti-sway system according to claim 1 is characterized in that: The winding directions of the steel wire rope connected to the left steel wire rope connector on the T-shaped frame at the front and rear ends of the sling upper frame and the steel wire rope connected to the two steel wire rope connectors on the T-shaped frame at the left end of the sling upper frame on the lifting drum are consistent; The winding directions of the steel wire ropes connected to the right steel wire rope connectors on the T-shaped frames at the front and rear ends of the hoisting device and the steel wire ropes connected to the two steel wire rope connectors on the T-shaped frames at the right end of the hoisting device are consistent on the lifting drum.

3. The container crane hoisting wire rope anti-sway system according to claim 1 is characterized in that: The limiting member comprises an annular limiting plate and a rectangular limiting plate which are connected inside and outside; four sliders extending in the vertical direction are evenly arranged on the outer wall of the annular limiting plate along the circumferential direction, and a sliding groove for slidingly cooperating with the corresponding slider is arranged on the inner wall of the rectangular limiting plate; The bottom of the annular limiting plate is fixedly connected to the base; The base is provided with an adjusting mechanism for controlling the lifting and lowering of the rectangular limiting plate.

4. The container crane hoisting wire rope anti-sway system as claimed in claim 3 is characterized in that: The adjustment mechanism is two adjustment cylinders located at two ends of the base respectively; Lifting plates are symmetrically arranged on both sides of the rectangular limiting plate; The bottom end of the regulating cylinder is fixedly connected to the base, and the piston rod end of the regulating cylinder is upwardly connected to the corresponding lifting plate.

5. The container crane hoisting wire rope anti-sway system according to claim 1, characterized in that: A crossbeam is provided at the position where the movable support is provided on the upper frame of the sling, and the bottoms of both ends of the crossbeam are hinged to the upper frame of the sling through hinge shafts; The cross beams at the left and right ends of the upper frame of the sling extend in the front-to-back direction; the bottoms of the cross beams at the left and right ends of the upper frame of the sling are provided with slide rails extending in the front-to-back direction; The cross beams at the front and rear ends of the sling frame extend in the left-right direction; the bottoms of the cross beams at the front and rear ends of the sling frame are provided with slide rails extending in the left-right direction; The bottom of the movable support is provided with a sliding block which cooperates with the sliding rail at the bottom of the corresponding beam; A screw rod is disposed at one end of the crossbeam, and a motor is disposed at the end of the screw rod; A nut threadedly connected to the lead screw is arranged inside the movable support.

6. The container crane hoisting wire rope anti-sway system according to any one of claims 1 to 5, characterized in that: The lifting drum is provided as one, and the lifting drum is located in the middle of the trolley frame; The winding directions of eight steel wire ropes connected by four T-shaped frames on the upper frame of the sling are consistent on the lifting drum.

7. The container crane hoisting wire rope anti-sway system according to any one of claims 1 to 5, characterized in that: The lifting drums are provided in two and are arranged in parallel on the left and right sides; The steel wire rope connected to the left steel wire rope connector on the T-shaped frame at the front and rear ends of the sling upper frame and the steel wire rope connected to the two steel wire rope connectors on the T-shaped frame at the left end of the sling upper frame are wound around the lifting drum on the left side; The steel wire rope connected to the right steel wire rope connector on the T-shaped frame at the front and rear ends of the sling frame and the steel wire rope connected to the two steel wire rope connectors on the right end T-shaped frame of the sling frame are wound around the lifting drum on the right side.

Images