Eight-rope double-winding-drum lifting device

Abstract

The utility model provides an eight-rope double-winding-drum lifting device which comprises an upper frame connected with a lifting appliance, two sets of first pulley blocks are arranged on the two sides of the upper frame in the first direction respectively, and two sets of second pulley blocks are arranged on the two sides of the upper frame in the second direction respectively; the two lifting winding drums are connected to the trolley assemblies located on the two sides of the upper portion of the upper frame correspondingly. The first ends of the four first steel wire ropes are respectively wound on the lifting winding drum, and the second ends respectively bear the first pulley block and then are independently connected to a first micro-motion mechanism capable of moving along the second direction; first ends of four second steel wire ropes are respectively wound on the lifting winding drum, second ends of the four second steel wire ropes respectively bear a second pulley block and then are connected to two sides of a second micro-motion mechanism which can move along the first direction and can be used as a rotating shaft to perform central autorotation along the first direction, and when the lifting winding drum synchronously and reversely rotates, the lifting appliance ascends and descends along a third direction. The lifting appliance can move based on freedom degrees in six directions, the working efficiency is improved, and the service life of the pulley is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hoist field, concretely relates to a eight-rope double-drum hoisting device. BACKGROUND

[0002] The traditional double-drum double-multiplying eight-rope winding lifting device sets the push rod translation mechanism on the upper frame of the hoist to realize the translation function of the hoist in the trolley direction and the horizontal rotation action of the hoist, and the push rod stroke in the trolley direction is limited due to the limited width of the upper frame, which limits the translation distance of the hoist in the trolley direction, and the translation mechanism set on the upper frame increases the weight of the upper frame and the invalid energy consumption of the lifting operation, which does not meet the requirements of the national green energy-saving concept, and in addition, the device cannot realize the tilting function of the hoist in the trolley direction, and the function is not complete, which cannot meet the hoisting operation under special working conditions.

[0003] Therefore, the utility model provides a eight-rope double-drum hoisting device. UTILITY MODEL CONTENTS

[0004] In view of the problems in the prior art, the utility model aims at providing a eight-rope double-drum hoisting device, which overcomes the difficulties of the prior art, can realize the six-direction freedom motion of the hoist, improves the working efficiency, reasonably winds the steel wire rope, reduces the transition pulley and improves the service life of the steel wire rope and the pulley.

[0005] The embodiment of the utility model provides a eight-rope double-drum hoisting device, which comprises:

[0006] The upper frame of the connecting hoist is provided with two sets of first pulley sets on the two sides of the first direction respectively, and two sets of second pulley sets are arranged on the two sides of the second direction of the upper frame respectively;

[0007] Two lifting drums are connected to the trolley assemblies on the two sides above the upper frame respectively;

[0008] Four first steel wire ropes are wound on the lifting drums at the first ends respectively, and the second ends are independently connected to a first micro-motion mechanism movable along the second direction after bearing the first pulley sets respectively; and

[0009] Four second steel wire ropes are wound on the lifting drums at the first ends respectively, and the second ends are connected to the two sides of a second micro-motion mechanism movable along the first direction and capable of central rotation around the first direction as the rotation axis after bearing the second pulley sets respectively, and when the lifting drums rotate reversely synchronously, the hoist is lifted along the third direction.

[0010] Preferably, the second micro-motion mechanism comprises:

[0011] two second connecting rods arranged in parallel, each of which is provided with a second pivot seat at the center;

[0012] two third connecting rods arranged in parallel, each of which is arranged in layers on the second connecting rod, and each of which is provided with a pivot rod at both sides of the center, the pivot rod being rotatably inserted into the second pivot seat, and the second pivot seats collectively forming a rotating shaft for the third connecting rod;

[0013] two second tracks arranged in parallel, each of which is connected to both ends of the third connecting rod; and

[0014] two second trolleys, each of which is slidably arranged in the second track, and each of which is provided with a third pivot seat at both ends of the bottom, and the second ends of the second steel wires are pivotally connected to the third pivot seats.

[0015] Preferably, the second micro-motion mechanism is located between the two lifting drums, the second connecting rod and the third connecting rod are both extended in the second direction, and the second track is extended in the first direction.

[0016] Preferably, the lifting drums are arranged in the first direction, and the rotating shafts of the lifting drums are extended in the second direction.

[0017] Preferably, the second ends of the second steel wires are connected to both ends of the second micro-motion mechanism after being crossed with each other, and when the third connecting rod rotates based on the second pivot seat, the lifting tool is vertically rotated around the first direction as the rotating shaft by being pulled by the second steel wire.

[0018] Preferably, when the second trolleys slide along the second track, the lifting tool is translated in the first direction by being pulled by the second steel wire.

[0019] Preferably, each first micro-motion mechanism comprises:

[0020] a first track extended in the second direction, the first track being located at both ends of both sides above the lifting tool;

[0021] a first trolley, both sides of the first trolley being provided with a first roller, and the first trolley being slidably arranged in the first track;

[0022] a first pivot seat arranged at the bottom of the first trolley;

[0023] a first pivot member pivotally connected to the first pivot seat and connected to the second end of the first steel wire.

[0024] Preferably, when the first trolleys at both ends of the diagonal line are synchronously and reversely translated, the lifting tool is horizontally rotated around the third direction as the rotating shaft by being pulled by the second steel wire.

[0025] Preferably, the hoist is translated in a second direction by the first wire rope when the first trolley slides along the first track.

[0026] Preferably, the hoist is translated in a third direction by the first wire rope and the second wire rope when the hoisting drums are synchronously reversed.

[0027] The first wire rope and the second wire rope are synchronously translated in the third direction when the hoisting drums are synchronously rotated in the same direction.

[0028] The eight-rope double-drum hoisting device of the utility model can realize hoist movement based on six directions, improves work efficiency, reasonably winds the wire rope, reduces the transition pulley, and improves the service life of the wire rope and the pulley. BRIEF DESCRIPTION OF DRAWINGS

[0029] Other features, objects, and advantages of the utility model will become more apparent through reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0030] Figure 1 It is a perspective view of the eight-rope double-drum hoisting device of the utility model.

[0031] Figure 2 It is a side view of the eight-rope double-drum hoisting device of the utility model along a first direction.

[0032] Figure 3 It is a side view of the eight-rope double-drum hoisting device of the utility model along a second direction.

[0033] Figure 4 It is a perspective view of the first micro-motion mechanism in the eight-rope double-drum hoisting device of the utility model.

[0034] Figure 5 It is a schematic view of the first micro-motion mechanism in the eight-rope double-drum hoisting device of the utility model.

[0035] Figure 6 It is a perspective view of the second micro-motion mechanism in the eight-rope double-drum hoisting device of the utility model.

[0036] Figure 7 It is a side view of the second micro-motion mechanism in the eight-rope double-drum hoisting device of the utility model along a first direction.

[0037] Figure 8 It is a side view of the second micro-motion mechanism in the eight-rope double-drum hoisting device of the utility model along a second direction.

[0038] Figure 9 It is a top view of the second micro-motion mechanism in the eight-rope double-drum hoisting device of the utility model.

[0039] Figure Labels

[0040] 1. Hoisting Drum

[0041] 2. Car components

[0042] 31 First Wire Rope

[0043] 32 Second steel wire rope

[0044] 4 First pulley block

[0045] 5. Lifting gear

[0046] 6 Available

[0047] 7 First micro-motion mechanism

[0048] 71 First Track

[0049] 72 First Car

[0050] 73 First Roller

[0051] 74 First Pivot

[0052] 75 First pivot component

[0053] 8 Second micro-motion mechanism

[0054] 81 Second Link

[0055] 82 Second pivot seat

[0056] 83 Third Link

[0057] 84 Second Track

[0058] 85 Second car

[0059] 86 Third Pivot

[0060] 9 First pulley group Detailed Implementation

[0061] The following specific examples illustrate the implementation methods of this application. Those skilled in the art can easily understand the other advantages and effects of this application from the content disclosed herein. This application can also be implemented or applied through other different specific embodiments, and various details in this application can be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0062] The embodiments of the present application will be described in detail below with reference to the drawings, so that those skilled in the art can easily implement the present application. The present application can be embodied in various ways, and is not limited to the embodiments described herein.

[0063] In the description of the present application, the expressions "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that the specific features, structures, materials, or characteristics represented in connection with the embodiment or example are included in at least one embodiment or example of the present application. Also, the specific features, structures, materials, or characteristics represented can be combined in an appropriate manner in any one or more embodiments or examples. In addition, the skilled person can combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, without contradiction.

[0064] In addition, the terms "first", "second", etc. are used only for the purpose of explanation, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0065] In order to clearly explain the present application, devices irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar constituent elements throughout the specification.

[0066] Throughout the specification, when it is said that a device is "connected" to another device, it includes not only the case of "direct connection", but also the case of "indirect connection" in which other elements are interposed therebetween. In addition, when it is said that a device "includes" a certain constituent element, unless otherwise specifically stated, other constituent elements are not excluded, but it means that other constituent elements can also be included.

[0067] When it is said that a device is "on" another device, it can be directly on the other device, but can also be accompanied by other devices therebetween. When it is said that a device is "directly" on another device, there are no other devices therebetween.

[0068] Although the terms first, second, etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first interface and a second interface, etc. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises", "comprising", "includes" and / or "including", when used herein, specify the presence of stated features, steps, operations, elements, components, items, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, items, and / or groups thereof. As used herein, the terms "or" and "and / or" are construed to be inclusive, or mean any one or any combination of the listed items. Thus, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Exceptions to this definition apply only when the combination of elements, functions, steps or acts are mutually exclusive, as in some instances certain combinations are inherently mutually exclusive.

[0069] The professional terms used herein are used only to refer to specific embodiments and are not intended to limit the present application. The singular form used herein, unless the context clearly indicates otherwise, also includes the plural form. The meaning of "comprising" used in the specification is to specify the particular characteristics, regions, integers, steps, operations, elements and / or components, and not to exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements and / or components.

[0070] Although not differently defined, the technical and scientific terms used herein include the technical terms and scientific terms used herein, all terms have the same meaning as the meaning generally understood by the skilled person in the technical field to which the present application belongs. The terms defined in the commonly used dictionary are interpreted to have a meaning consistent with the relevant technical literature and the content currently prompted, unless defined, and should not be interpreted as an ideal or very formal meaning.

[0071] Figure 1 It is a perspective view of the eight-rope double-drum hoisting device of the utility model. Figure 2 It is a side view of the eight-rope double-drum hoisting device of the utility model along a first direction. Figure 3 It is a side view of the eight-rope double-drum hoisting device of the utility model along a second direction. Figures 1 to 3As shown, the eight-rope double-drum hoisting device of the utility model, include: the upper frame 6 of connecting the lifting appliance 5, two lifting drums 1, four first steel wire ropes 31 and four second steel wire ropes 32. Among them, the two sides of the first direction X of the upper frame 6 are each provided with two sets of first pulley blocks 9, and the two sides of the second direction Y of the upper frame 6 are each provided with two sets of second pulley blocks 4. Two lifting drums 1 are connected to the trolley assemblies 2 on the two sides above the upper frame 6. The first ends of four first steel wire ropes 31 are wound on the lifting drum 1 respectively, and the second ends are independently connected to a first micro-motion mechanism 7 movable along the second direction Y after bearing the first pulley block 9. The first ends of four second steel wire ropes 32 are wound on the lifting drum 1 respectively, and the second ends are connected to the two sides of a second micro-motion mechanism 8 movable along the first direction X and capable of central rotation around the first direction X as the rotation axis after bearing the second pulley block 4, when the lifting drum 1 is synchronously reversed, the lifting appliance 5 is lifted along the third direction Z.

[0072] In a preferred embodiment, when the lifting drum 1 is synchronously reversed, the lifting appliance 5 is synchronously lifted along the third direction Z by the first steel wire rope 31 and the second steel wire rope 32. When the lifting drum 1 is synchronously rotated in the same direction, the first steel wire rope 31 and the second steel wire rope 32 are synchronously lifted along the third direction Z, but not limited thereto.

[0073] Figure 4 It is a perspective view of the first micro-motion mechanism in the eight-rope double-drum hoisting device of the utility model. Figure 5 It is a schematic view of the first micro-motion mechanism in the eight-rope double-drum hoisting device of the utility model. As shown in Figure 4 And 5 As shown, the first track 71 extending along the second direction in each first micro-motion mechanism 7, the first track 71 is respectively located at both ends of the two sides above the lifting appliance 5. The two sides of the first trolley 72 are respectively provided with the first roller 73, which is slidably arranged in the first track 71. The first pivot seat 74 is arranged at the bottom of the first trolley 72. The first pivot piece 75 is pivoted in the first pivot seat 74 and connected to the second end of the first steel wire rope 31, but not limited thereto.

[0074] In a preferred embodiment, when the first trolley 72 at both ends of the diagonal line is synchronously reversed, the lifting appliance 5 is horizontally rotated around the third direction Z as the rotation axis by the second steel wire rope 32, but not limited thereto.

[0075] In a preferred embodiment, when the first trolley 72 slides along the first track 71, the lifting appliance 5 is translated to the second direction by the first steel wire rope 31, but not limited thereto.

[0076] Figure 6 It is a perspective view of the second micro-motion mechanism in the eight-rope double-drum hoisting device of the utility model. Figure 7The side view of the second micro-motion mechanism in the eight-rope double-drum hoisting device along the first direction. Figure 8 The side view of the second micro-motion mechanism in the eight-rope double-drum hoisting device along the second direction. Figure 9 The plan view of the second micro-motion mechanism in the eight-rope double-drum hoisting device. Figures 6 to 9 As shown in the figure, the second micro-motion mechanism 8 comprises: two parallel second connecting rods 81, each of which is provided with a second pivot connection seat 82 in the center; two parallel third connecting rods 83, each of which is stacked on the second connecting rod 81, and each of which is provided with a pivot rod in the center on both sides, the pivot rod being rotatably inserted into the second pivot connection seat 82, and the two second pivot connection seats 82 forming a rotating shaft for the third connecting rod 83; two parallel second tracks 84, each of which is connected to the two ends of the third connecting rod 83; and two second trolleys 85, each of which is slidably arranged in the second track 84, and each of which is provided with a third pivot connection seat 86 at the two ends of the bottom, and the second ends of the second steel wire ropes 32 being pivotally connected to the third pivot connection seats 86, but not limited thereto.

[0077] In a preferred embodiment, the second micro-motion mechanism 8 is located between the two hoisting drums 1, the second connecting rod 81 and the third connecting rod 83 both extend along the second direction Y, and the second track 84 extends along the first direction X, but not limited thereto.

[0078] In a preferred embodiment, the hoisting drums 1 are arranged along the first direction X, and the rotating shafts of the hoisting drums 1 extend along the second direction Y, but not limited thereto.

[0079] In a preferred embodiment, the second ends of the second steel wire ropes 32 are connected to the two ends on both sides of the second micro-motion mechanism 8 after being crossed with each other, and when the third connecting rod 83 rotates based on the second pivot connection seat 82, the lifting tool 5 is vertically rotated around the first direction as the rotating shaft under the traction of the second steel wire rope 32, but not limited thereto.

[0080] In a preferred embodiment, when the second trolley 85 slides along the second track 84, the lifting tool 5 is translated towards the first direction under the traction of the second steel wire rope 32, but not limited thereto.

[0081] The implementation process of the utility model is as follows:

[0082] Reference Figures 1 to 9As shown, the first direction X of the upper frame 6 is respectively provided with two sets of first pulley blocks 9, and the second direction Y of the upper frame 6 is respectively provided with two sets of second pulley blocks 4. Two lifting drums 1 are respectively connected to the trolley assemblies 2 on the two sides of the upper frame 6. The first ends of four first steel wires 31 are respectively wound on the lifting drums 1, and the second ends are respectively independently connected to a first micro-motion mechanism 7 capable of moving along the second direction Y after bearing the first pulley blocks 9. The first ends of four second steel wires 32 are respectively wound on the lifting drums 1, and the second ends are respectively connected to the two sides of a second micro-motion mechanism 8 capable of moving along the first direction X and capable of central rotation around the first direction X as the rotation axis. When the lifting drums 1 are synchronously reversely rotated, the lifting appliance 5 is lifted along the third direction Z. When the lifting drums 1 are synchronously reversely rotated, the lifting appliance 5 is synchronously lifted along the third direction Z by the first steel wires 31 and the second steel wires 32. When the lifting drums 1 are synchronously rotated in the same direction, the first steel wires 31 and the second steel wires 32 are synchronously lifted along the third direction Z. The first track 71 extending along the second direction in each first micro-motion mechanism 7 is located at the two ends on the two sides above the lifting appliance 5. The two sides of the first trolley 72 are respectively provided with first rollers 73, which are slidably arranged in the first track 71. The first pivot seat 74 is arranged at the bottom of the first trolley 72. The first pivot piece 75 is pivoted in the first pivot seat 74 and connected with the second end of the first steel wire 31. When the first trolleys 72 at the two ends of the diagonal line are synchronously reversely translated, the lifting appliance 5 is horizontally rotated around the third direction Z as the rotation axis by the second steel wires 32. When the first trolley 72 slides along the first track 71, the lifting appliance 5 is translated to the second direction by the first steel wire 31. The second micro-motion mechanism 8 comprises: two parallelly arranged second connecting rods 81, the central parts of the second connecting rods 81 are respectively provided with second pivot seats 82. Two parallelly arranged third connecting rods 83 are respectively arranged on the second connecting rods 81, the central parts of the third connecting rods 83 are respectively provided with pivot rods, the pivot rods are respectively rotatably inserted into the second pivot seats 82, and the second pivot seats 82 jointly form a rotation axis for the third connecting rods 83. Two parallelly arranged second tracks 84 are respectively connected with the two ends of the third connecting rods 83. Two second trolleys 85 are respectively slidably arranged in the second tracks 84, and the two ends of the bottom of each second trolley 85 are respectively provided with a third pivot seat 86, and the second ends of the second steel wires 32 are respectively pivoted to the third pivot seats 86. The second micro-motion mechanism 8 is located between the two lifting drums 1, the second connecting rods 81 and the third connecting rods 83 extend along the second direction Y, and the second tracks 84 extend along the first direction X. The lifting drums 1 are arranged along the first direction X, and the rotation axes of the lifting drums 1 extend along the second direction Y. The second ends of the second steel wires 32 are cross-connected to the two ends on the two sides of the second micro-motion mechanism 8, and when the third connecting rods 83 rotate based on the second pivot seats 82, the lifting appliance 5 is vertically rotated around the first direction as the rotation axis by the second steel wires 32.When the second trolley 85 slides along the second track 84, the lifting appliance 5 is pulled by the second wire rope 32 to translate in a first direction.

[0083] The second micro-motion mechanism 8 has a double-layer structure, and has two-direction freedom motion functions, wherein the lower layer tilting mechanism can make the whole second micro-motion mechanism 8 tilt around the X axis through the rotating shaft; the upper side translation mechanism can move back and forth on the lower layer structure along the X axis direction. Based on the above structure, the device can realize that the lifting appliance 5 can have six-direction freedom motion functions: translation function along the X direction; translation function along the Y direction; lifting function along the Z direction; tilting function around the X direction; tilting function around the Y direction; and rotation function around the Z direction.

[0084] The specific implementation mode of the lifting appliance 5 based on the six-direction freedom motion is as follows:

[0085] (1) the translation function of the lifting appliance 5 along the X direction is realized by the back-and-forth movement of the second micro-motion mechanism 8 along the X direction.

[0086] (2) the translation function of the lifting appliance 5 along the Y direction is realized by the back-and-forth synchronous movement of the first micro-motion mechanism 7 along the Y direction.

[0087] (3) the lifting function of the lifting appliance 5 along the Z direction is realized by the reverse rotation of the two sets of winding drums of the lifting mechanism.

[0088] (4) the tilting function of the lifting appliance 5 around the X direction is realized by the rotation of the second micro-motion mechanism 8 around the rotating shaft (the axis is the X axis direction).

[0089] (5) the tilting function of the lifting appliance 5 around the Y direction is realized by the synchronous clockwise or counterclockwise rotation of the two sets of winding drums of the lifting mechanism.

[0090] (6) the rotation function along the Z direction is realized by the synchronous movement of the two groups of first micro-motion mechanisms 7 located on the diagonal lines, and the two groups of diagonal reverse translation.

[0091] The utility model has the following technical advantages:

[0092] (1) the trolley winding anti-shaking performance of the utility model is good, and the stability is good. The lifting appliance has the functions of forward and backward translation, left and right translation, forward and backward tilting, left and right tilting, and horizontal rotation, is complete in function, meets the full working condition operation demand, and improves the work efficiency.

[0093] (2) the lifting appliance upper frame of the utility model is optimized and designed, the lifting weight is reduced. The steel wire rope force is reduced, the power consumption is reduced, and the utility model is more efficient and energy-saving.

[0094] (3) the steel wire rope winding of the utility model is reasonable, the transition pulley is reduced, the service life of the steel wire rope and the pulley is improved, the maintenance time is reduced, and the working strength of the workers is reduced.

[0095] In conclusion, the eight-rope double-drum hoisting device can realize the movement of the lifting appliance based on six directions, improve the work efficiency, reasonably wind the steel wire rope, reduce the transition pulley, and improve the service life of the steel wire rope and the pulley.

[0096] The above is a further detailed description of the utility model in combination with specific preferred embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all of them should be regarded as belonging to the protection scope of the utility model.

Claims

1. An eight-rope double-drum hoist, characterized by, The utility model relates to a lifting device for lifting a connecting sling (5), comprising: an upper frame (6) connected to the sling (5), the upper frame (6) having two first pulley sets (9) on each side in a first direction (X) and two second pulley sets (4) on each side in a second direction (Y); two lifting drums (1) connected to a trolley assembly (2) on each side above the upper frame (6); four first steel wires (31) each having a first end wound around the lifting drum (1) and a second end connected to a first micro-motion mechanism (7) movable in the second direction (Y) and carrying the first pulley set (9) behind; and four second steel wires (32) each having a first end wound around the lifting drum (1) and a second end connected to a second micro-motion mechanism (8) movable in the first direction (X) and carrying the second pulley set (4) behind, the second ends of the second steel wires (32) being connected to both sides of the second micro-motion mechanism (8) after being crossed with each other, the sling (5) being lifted in a third direction (Z) when the lifting drums (1) are synchronously and reversely rotated.

2. The eight-rope double-drum hoist of claim 1, wherein, The second micro-motion mechanism (8) comprises: two second links (81) arranged in parallel, each having a second pivot seat (82) in the center; two third links (83) arranged in parallel and stacked on the second links (81), each having a pivot rod in the center on both sides, the pivot rod being rotatably inserted into the second pivot seat (82), the second pivot seats (82) together forming a rotation axis for the third link (83) to rotate; two second tracks (84) connected to both ends of the third link (83); and two second trolleys (85) slidably arranged in the second track (84), each having a third pivot seat (86) at both ends of the bottom, the second ends of the second steel wires (32) being pivotally connected to the third pivot seat (86).

3. The eight-rope double-drum hoist of claim 2, wherein, The second micro-motion mechanism (8) is located between the two lifting drums (1), the second link (81) and the third link (83) extend in the second direction (Y), and the second track (84) extends in the first direction (X).

4. The eight-rope double-drum hoist apparatus as claimed in claim 2, characterized by, The lifting drums (1) are arranged in the first direction (X), and the rotation axes of the lifting drums (1) extend in the second direction (Y).

5. The eight-rope double-drum hoist apparatus as claimed in claim 2, characterized by, The second ends of the second steel wires (32) are connected to both ends of the second micro-motion mechanism (8) after being crossed with each other, and the sling (5) is vertically rotated around the first direction as the rotation axis when the third link (83) rotates based on the second pivot seat (82) and is pulled by the second steel wires (32).

6. The eight-rope double-drum hoist apparatus as claimed in claim 2, characterized by, The sling (5) is translated in the first direction when the second trolley (85) slides along the second track (84) and is pulled by the second steel wires (32).

7. The eight-rope double-drum hoist apparatus as claimed in claim 1, characterized by, Each first micro-motion mechanism (7) comprises: a first track (71) extending in a second direction, the first track (71) being respectively arranged at two ends of two sides above the spreader (5); a first trolley (72) provided with a first roller (73) at two sides of the first trolley (72) and slidably arranged in the first track (71); a first pivot seat (74) arranged at a bottom of the first trolley (72); a first pivot (75) pivotally arranged in the first pivot seat (74) and connected to a second end of the first steel wire (31).

8. The eight-rope double-drum hoist of claim 7, wherein, When the first trolley (72) at two ends of a diagonal line is synchronously and reversely translated, the spreader (5) is dragged by the second steel wire (32) to rotate horizontally around a third direction (Z) as a rotation axis.

9. The eight-rope double-drum hoist apparatus as claimed in claim 7, characterized in that, When the first trolley (72) slides along the first track (71), the spreader (5) is dragged by the first steel wire (31) to translate to a second direction.

10. The eight-rope double-drum hoist apparatus of claim 1, wherein, When the hoisting drum (1) is synchronously and reversely rotated, the spreader (5) is synchronously and reversely lifted along the third direction (Z) by the first steel wire (31) and the second steel wire (32). When the hoisting drum (1) is synchronously and forwardly rotated, the first steel wire (31) and the second steel wire (32) are synchronously and forwardly lifted along the third direction (Z).

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