Eight-rope double-winding-drum lifting device

Abstract

The invention 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 each of the two sides of the upper frame in the first direction, and two sets of second pulley blocks are arranged on each of the two sides of the upper frame in the second direction; 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 invention relates to the field of slings, in particular to an eight-rope double-drum lifting device. Background Art

[0002] The traditional double-drum double-rate eight-rope winding lifting device realizes the translation function of the spreader in the direction of the trolley and the horizontal rotation movement of the spreader by setting a push rod translation mechanism on the spreader frame. Due to the limited width of the upper frame, this design limits the push rod stroke in the direction of the trolley, resulting in limited translation distance of the spreader in the direction of the trolley. At the same time, setting a translation mechanism on the upper frame will increase the weight of the upper frame and increase the ineffective energy consumption of the lifting operation, which does not meet the national green energy-saving concept requirements. In addition, this device cannot realize the spreader tilting function in the direction of the trolley, and its functions are incomplete, and it cannot meet the lifting operations under special working conditions.

[0003] Therefore, the present invention provides an eight-rope double-drum lifting device. Summary of the invention

[0004] In view of the problems in the prior art, the purpose of the present invention is to provide an eight-rope double-drum lifting device, which overcomes the difficulties of the prior art, can realize the movement of the lifting device based on six degrees of freedom, improve work efficiency, reasonably wind the wire rope, reduce transition pulleys, and increase the life of the wire rope and pulleys.

[0005] An embodiment of the present invention provides an eight-rope double-drum lifting device, comprising:

[0006] An upper frame connected to the sling, wherein two sets of first pulley blocks are respectively arranged on both sides of the upper frame in a first direction, and two sets of second pulley blocks are respectively arranged on both sides of the upper frame in a second direction;

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

[0008] four first steel wire ropes, wherein the first ends of the first steel wire ropes are respectively wound around the lifting drums, and the second ends of the first steel wire ropes are respectively carried by the first pulley blocks and independently connected to a first micro-motion mechanism that can move along the second direction; and

[0009] Four second steel wire ropes, the first ends of which are respectively wound around the lifting drums, and the second ends of which carry the second pulley blocks and are connected to the two sides of the second micro-motion mechanism which can move along the first direction and can rotate around the first direction as the rotation axis; when the lifting drums rotate synchronously in the opposite direction, the slings are lifted and lowered along the third direction.

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

[0011] Two second connecting rods are arranged in parallel, and the centers of the second connecting rods are respectively provided with second pivot seats;

[0012] Two third connecting rods are arranged in parallel, each of which is stacked on the second connecting rod. Pivot rods are respectively arranged on both sides of the center of the third connecting rod. The pivot rods are respectively rotatably inserted into the second pivot seats. The second pivot seats together form a rotating shaft for the third connecting rod to rotate.

[0013] Two second rails arranged in parallel, respectively connecting two ends of the third connecting rod; and

[0014] Two second trolleys are slidably disposed in the second track respectively. Two ends of the bottom of each second trolley are respectively provided with a third pivot seat, and the second ends of the second steel wire ropes are respectively 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 both extend along the second direction, and the second track extends along the first direction.

[0016] Preferably, the lifting drum is arranged along a first direction, and the rotation axis of the lifting drum extends along a second direction.

[0017] Preferably, the second ends of the second steel wire ropes are crossed with each other and connected to the two ends on both sides of the second micro-motion mechanism. When the third connecting rod rotates based on the second pivot seat, the sling is pulled by the second steel wire rope and rotates vertically around the first direction as the rotation axis.

[0018] Preferably, when the second trolley slides along the second track, the sling is pulled by the second steel wire rope to translate in the first direction.

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

[0020] A first track extending along a second direction, the first track being located at two ends of both sides above the hanger;

[0021] A first trolley, wherein first rollers are respectively provided on both sides of the first trolley and are slidably arranged in the first track;

[0022] A first pivot seat is disposed at the bottom of the first trolley;

[0023] The first pivoting member is pivotally connected to the first pivoting seat and is connected to the second end of the first steel wire rope.

[0024] Preferably, when the first trolleys at the two ends of the diagonal line translate in opposite directions synchronously, the sling is pulled by the second steel wire rope to rotate horizontally around the third direction as the rotation axis.

[0025] Preferably, when the first trolley slides along the first track, the sling is pulled by the first steel wire rope to translate in the second direction.

[0026] Preferably, when the lifting drum rotates synchronously in the opposite direction, the sling is pulled by the first steel wire rope and the second steel wire rope to rise and fall synchronously in the third direction;

[0027] When the lifting drums rotate synchronously in the same direction, the first steel wire rope and the second steel wire rope are synchronously lifted and lowered along the third direction.

[0028] The eight-rope double-drum lifting device of the present invention can realize the movement of the lifting device based on six degrees of freedom in directions, improve work efficiency, reasonably wind the wire rope, reduce transition pulleys, and increase the service life of the wire rope and the pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0030] Figure 1 It is a stereoscopic view of the eight-rope double-drum lifting device of the present invention.

[0031] Figure 2 It is a side view of the eight-rope double-drum lifting device of the present invention along the first direction.

[0032] Figure 3 It is a side view of the eight-rope double-drum lifting device of the present invention along the second direction.

[0033] Figure 4 It is a stereoscopic diagram of the first micro-motion mechanism in the eight-rope double-drum lifting device of the present invention.

[0034] Figure 5 It is a schematic diagram of the first micro-motion mechanism in the eight-rope double-drum lifting device of the present invention.

[0035] Figure 6 It is a stereoscopic diagram of the second micro-motion mechanism in the eight-rope double-drum lifting device of the present invention.

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

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

[0038] Fig. 9 It is a top view of the second micro-motion mechanism in the eight-rope double-drum lifting device of the present invention.

[0039] Reference numerals

[0040] 1 Lifting drum

[0041] 2. Trolley assembly

[0042] 31 First Wire Rope

[0043] 32 Second wire rope

[0044] 4First pulley block

[0045] 5. Spreader

[0046] 6 on shelves

[0047] 7First micro-motion mechanism

[0048] 71 First Track

[0049] 72 First Car

[0050] 73 First roller

[0051] 74 first pivot seat

[0052] 75 first pivot member

[0053] 8 Second micro-motion mechanism

[0054] 81 Second connecting rod

[0055] 82 second pivot seat

[0056] 83 Third connecting rod

[0057] 84 Second Track

[0058] 85 Second Car

[0059] 86 third pivot seat

[0060] 9First pulley block DETAILED DESCRIPTION

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

[0062] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in a variety of different forms and is not limited to the embodiments described herein.

[0063] In the representations of the present application, the representations with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the represented specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, unless they contradict each other.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0065] In order to clearly describe the present application, components irrelevant to the description are omitted, and the same reference symbols are given to the same or similar components throughout the specification.

[0066] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0067] When a device is said to be "on" another device, it may be directly on the other device, but there may also be other devices between it. In contrast, when a device is said to be "directly" on another device, there are no other devices between it.

[0068] Although the terms first, second, etc. are used to represent various elements in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first interface and the second interface, etc. are represented. Moreover, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate the existence of features, steps, operations, elements, components, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or more other features, steps, operations, elements, components, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "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". Only when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way, will there be an exception to this definition.

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

[0070] Although not defined differently, all terms, including technical and scientific terms used herein, have the same meaning as those generally understood by those skilled in the art to which this application belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with the relevant technical literature and the contents of the current disclosure, and unless defined, shall not be overly interpreted as ideal or very formal meanings.

[0071] Figure 1 It is a stereoscopic view of the eight-rope double-drum lifting device of the present invention. Figure 2 It is a side view of the eight-rope double-drum lifting device of the present invention along the first direction. Figure 3 FIG. 2 is a side view of the eight-rope double-drum lifting device of the present invention along the second direction. Figures 1 to 3As shown, the eight-rope double-drum lifting device of the present invention comprises: an upper frame 6 connected to a sling 5, two lifting drums 1, four first steel wire ropes 31 and four second steel wire ropes 32. Among them, two sets of first pulley blocks 9 are respectively provided on both sides of the upper frame 6 in the first direction X, and two sets of second pulley blocks 4 are respectively provided on both sides of the upper frame 6 in the second direction Y. The two lifting drums 1 are respectively connected to the trolley assembly 2 located on both sides above the upper frame 6. The first ends of the four first steel wire ropes 31 are respectively wound around the lifting drum 1, and the second ends are respectively connected to a first micro-motion mechanism 7 that can move along the second direction Y after carrying the first pulley block 9. The first ends of the four second steel wire ropes 32 are respectively wound around the lifting drum 1, and the second ends are respectively connected to the two sides of the second micro-motion mechanism 8 that can move along the first direction X and can rotate centrally with the first direction X as the rotation axis. When the lifting drum 1 rotates synchronously in the opposite direction, the sling 5 rises and falls along the third direction Z.

[0072] In a preferred embodiment, when the hoisting drum 1 rotates synchronously in opposite directions, the sling 5 is pulled by the first steel wire rope 31 and the second steel wire rope 32 to rise and fall synchronously in the third direction Z. When the hoisting drum 1 rotates synchronously in the same direction, the first steel wire rope 31 and the second steel wire rope 32 rise and fall synchronously in the third direction Z, but the present invention is not limited thereto.

[0073] Figure 4 It is a stereoscopic diagram of the first micro-motion mechanism in the eight-rope double-drum lifting device of the present invention. Figure 5 FIG. 1 is a schematic diagram of the first micro-motion mechanism in the eight-rope double-drum lifting device of the present invention. Figure 4 and 5 As shown, each first micro-motion mechanism 7 includes a first track 71 extending along the second direction, and the first track 71 is located at both ends of both sides above the sling 5. First rollers 73 are provided on both sides of the first trolley 72, and are slidably disposed in the first track 71. A first pivot seat 74 is disposed at the bottom of the first trolley 72. A first pivot member 75 is pivoted in the first pivot seat 74 and connected to the second end of the first steel wire rope 31, but is not limited thereto.

[0074] In a preferred embodiment, when the first trolleys 72 at both ends of the diagonal line move synchronously in opposite directions, the sling 5 is pulled by the second steel wire rope 32 and rotates horizontally around the third direction Z as the rotation axis, but this is not limited to this.

[0075] In a preferred embodiment, when the first trolley 72 slides along the first track 71 , the sling 5 is pulled by the first steel wire rope 31 to translate in the second direction, but the present invention is not limited thereto.

[0076] Figure 6 It is a stereoscopic diagram of the second micro-motion mechanism in the eight-rope double-drum lifting device of the present invention. Figure 7 It is a side view of the second micro-motion mechanism in the eight-rope double-drum lifting device of the present invention along the first direction. Figure 8 It is a side view of the second micro-motion mechanism in the eight-rope double-drum lifting device of the present invention along the second direction. Fig. 9 FIG. 1 is a top view of the second micro-motion mechanism in the eight-rope double-drum lifting device of the present invention. Figures 6 to 9 As shown, the second micro-motion mechanism 8 includes: two parallel second connecting rods 81, and the center of the second connecting rods 81 is respectively provided with a second pivot seat 82. Two parallel third connecting rods 83 are respectively stacked on the second connecting rod 81, and the central two sides of the third connecting rod 83 are respectively provided with pivot rods, and the pivot rods are respectively rotatably inserted in the second pivot seats 82, and the second pivot seats 82 jointly form a rotating shaft for the third connecting rod 83 to rotate. Two parallel second rails 84 are respectively connected to the two ends of the third connecting rod 83. Two second trolleys 85 are respectively slidably arranged in the second rails 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 wire rope 32 are respectively pivoted to the third pivot seats 86, but not limited thereto.

[0077] In a preferred embodiment, the second micro-motion mechanism 8 is located between the two lifting 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 drum 1 is arranged along a first direction X, and the rotation axis of the hoisting drum 1 extends along a second direction Y, but not limited thereto.

[0079] In a preferred embodiment, the second ends of the second steel wire ropes 32 are crossed with each other and connected to the two ends on both sides of the second micro-motion mechanism 8. When the third connecting rod 83 rotates based on the second pivot seat 82, the sling 5 is pulled by the second steel wire rope 32 and rotates vertically around the first direction as the rotation axis, but not limited to this.

[0080] In a preferred embodiment, when the second trolley 85 slides along the second track 84, the sling 5 is pulled by the second steel wire rope 32 to translate in the first direction, but the present invention is not limited thereto.

[0081] The implementation process of the present invention is as follows:

[0082] refer to Figures 1 to 9As shown, in the eight-rope double-drum lifting device of the present invention, two sets of first pulley blocks 9 are respectively provided on both sides of the first direction X of the upper frame 6, and two sets of second pulley blocks 4 are respectively provided on both sides of the second direction Y of the upper frame 6. The two lifting drums 1 are respectively connected to the trolley assemblies 2 located on both sides above the upper frame 6. The first ends of the four first steel wire ropes 31 are respectively wound around the lifting drum 1, and the second ends are respectively carried by the first pulley blocks 9 and then independently connected to a first micro-motion mechanism 7 that can move along the second direction Y. The first ends of the four second steel wire ropes 32 are respectively wound around the lifting drum 1, and the second ends are respectively carried by the second pulley blocks 4 and then connected to both sides of the second micro-motion mechanism 8 that can move along the first direction X and can rotate centrally with the first direction X as the rotation axis. When the lifting drum 1 rotates in the opposite direction synchronously, the sling 5 is lifted and lowered along the third direction Z. When the lifting drum 1 rotates in the opposite direction synchronously, the sling 5 is pulled by the first steel wire rope 31 and the second steel wire rope 32 and synchronously lifted and lowered along the third direction Z. When the lifting drum 1 rotates synchronously in the same direction, the first steel wire rope 31 and the second steel wire rope 32 are synchronously lifted and lowered along the third direction Z. In each first micro-motion mechanism 7, the first track 71 extending along the second direction is located at the two ends of both sides above the sling 5. First rollers 73 are respectively provided on both sides of the first trolley 72, 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 member 75 is pivoted in the first pivot seat 74 and connected to the second end of the first steel wire rope 31. When the first trolley 72 as the two ends of the diagonal line synchronously translates in the opposite direction, the sling 5 is pulled by the second steel wire rope 32 and rotates horizontally around the third direction Z as the rotation axis. When the first trolley 72 slides along the first track 71, the sling 5 is pulled by the first steel wire rope 31 to translate in the second direction. The second micro-motion mechanism 8 includes: two second connecting rods 81 arranged in parallel, and the centers of the second connecting rods 81 are respectively provided with second pivot seats 82. Two third connecting rods 83 are arranged in parallel, and are stacked on the second connecting rod 81. Pivot rods are respectively arranged on both sides of the center of the third connecting rod 83. The pivot rods are respectively rotatably inserted into the second pivot seats 82. The second pivot seats 82 together form a rotating shaft for the third connecting rod 83 to rotate. Two second rails 84 are respectively arranged in parallel, and the two ends of the third connecting rod 83 are respectively connected. Two second trolleys 85 are respectively slidably arranged in the second rails 84. The two ends of the bottom of each second trolley 85 are respectively provided with a third pivot seat 86, and the second end of the second steel wire rope 32 is respectively pivoted to the third pivot seat 86. The second micro-motion mechanism 8 is located between the two lifting drums 1. The second connecting rod 81 and the third connecting rod 83 are both extended along the second direction Y, and the second rail 84 is extended along the first direction X. The lifting drums 1 are arranged along the first direction X, and the rotating shaft of the lifting drum 1 extends along the second direction Y. The second ends of the second steel wire ropes 32 are crossed and connected to the two ends on both sides of the second micro-motion mechanism 8. When the third connecting rod 83 rotates based on the second pivot seat 82, the sling 5 is pulled by the second steel wire rope 32 and rotates vertically around the first direction as the rotation axis.When the second trolley 85 slides along the second track 84 , the sling 5 is pulled by the second steel wire rope 32 to translate in the first direction.

[0083] The second micro-motion mechanism 8 of the present invention has a double-layer structure and has a two-direction degree of freedom motion function, wherein the lower-layer tilting mechanism can tilt the second micro-motion mechanism 8 as a whole 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 the sling 5 based on the six-direction degree of freedom motion function: 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; rotation function around the Z direction.

[0084] The specific implementation method of the sling 5 being able to move based on 6 degrees of freedom is as follows:

[0085] (1) The second micro-motion mechanism 8 moves back and forth along the X direction to achieve the translation function of the hanger 5 along the X direction.

[0086] (2) The first micro-motion mechanism 7 is synchronously moved back and forth along the Y direction to realize the translation function of the lifting device 5 along the Y direction.

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

[0088] (4) The second micro-motion mechanism 8 rotates around its own rotation axis (the axis is in the X-axis direction), thereby realizing the tilting function of the lifting device 5 around the X-direction.

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

[0090] (6) When the two groups of first micro-motion mechanisms 7 located on the diagonal line move synchronously, the two groups of diagonals translate in opposite directions to achieve the rotation function along the Z direction.

[0091] The present invention has the following technical advantages:

[0092] (1) The trolley of the present invention has excellent anti-sway performance and good stability. It has the functions of front and rear left and right translation, front and rear left and right tilting, and horizontal rotation. It is fully functional, meets the needs of all working conditions, and improves work efficiency;

[0093] (2) The optimized design of the sling rack of the present invention reduces the lifting weight. The wire rope force is reduced, the power consumption is reduced, and it is more efficient and energy-saving;

[0094] (3) The wire rope of the present invention is wound reasonably, the transition pulley is reduced, the service life of the wire rope and the pulley is increased, the maintenance time is reduced, and the work intensity of the staff is reduced.

[0095] In summary, the purpose of the present invention is to provide an eight-rope double-drum lifting device, which can realize the movement of the lifting equipment based on six degrees of freedom, improve work efficiency, reasonably wind the wire rope, reduce transition pulleys, and increase the life of the wire rope and pulleys.

[0096] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An eight-rope double-drum lifting device, characterized in that: include: An upper frame (6) connected to the sling (5), wherein two sets of first pulley blocks (9) are respectively provided on both sides of the upper frame (6) in a first direction (X), and two sets of second pulley blocks (4) are respectively provided on both sides of the upper frame (6) in a second direction (Y); Two lifting drums (1) are respectively connected to the trolley assemblies (2) located on both sides above the upper frame (6); four first steel wire ropes (31), wherein the first ends of the first steel wire ropes (31) are respectively wound around the lifting drum (1), and the second ends of the first steel wire ropes (31) are respectively carried by the first pulley block (9) and independently connected to a first micro-motion mechanism (7) movable along the second direction (Y); and Four second steel wire ropes (32), the first ends of which are respectively wound around the lifting drum (1), and the second ends of which respectively carry the second pulley block (4) and are connected to two sides of a second micro-motion mechanism (8) which can move along the first direction (X) and can rotate around the first direction (X) as a rotation axis. When the lifting drum (1) rotates synchronously in the opposite direction, the sling (5) is lifted or lowered along a third direction (Z).

2. The eight-rope double-drum lifting device according to claim 1, characterized in that: The second micro-motion mechanism (8) comprises: Two second connecting rods (81) arranged in parallel, wherein the centers of the second connecting rods (81) are respectively provided with second pivot seats (82); Two third connecting rods (83) are arranged in parallel, each of which is stacked on the second connecting rod (81). Pivot rods are respectively arranged on both sides of the center of the third connecting rod (83). The pivot rods are respectively rotatably inserted into the second pivot seats (82). The second pivot seats (82) together form a rotating shaft for the third connecting rod (83) to rotate. Two second rails (84) arranged in parallel, respectively connecting two ends of the third connecting rod (83); and Two second trolleys (85) are slidably disposed in the second track (84), and a third pivot seat (86) is provided at both ends of the bottom of each second trolley (85), and the second end of the second steel wire rope (32) is pivotally connected to the third pivot seat (86).

3. The eight-rope double-drum lifting device according to claim 2, characterized in that: The second micro-motion mechanism (8) is located between the two lifting 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).

4. The eight-rope double-drum lifting device according to claim 2, characterized in that: The lifting drum (1) is arranged along a first direction (X), and the rotation axis of the lifting drum (1) extends along a second direction (Y).

5. The eight-rope double-drum lifting device according to claim 2, characterized in that: The second ends of the second steel wire ropes (32) are crossed with each other and connected to the two ends on both sides of the second micro-motion mechanism (8). When the third connecting rod (83) rotates based on the second pivot seat (82), the sling (5) is pulled by the second steel wire rope (32) and rotates vertically around the first direction as the rotation axis.

6. The eight-rope double-drum lifting device according to claim 2, characterized in that: When the second trolley (85) slides along the second track (84), the sling (5) is pulled by the second steel wire rope (32) to translate in the first direction.

7. The eight-rope double-drum lifting device according to claim 1, characterized in that: Each first micro-motion mechanism (7) comprises: A first track (71) extending along a second direction, wherein the first track (71) is respectively located at two ends of both sides above the hanger (5); A first trolley (72), wherein first rollers (73) are respectively provided on both sides of the first trolley (72) and are slidably arranged in the first track (71); A first pivot seat (74) is disposed at the bottom of the first trolley (72); The first pivoting member (75) is pivotally connected to the first pivoting seat (74) and is connected to the second end of the first steel wire rope (31).

8. The eight-rope double-drum lifting device according to claim 7, characterized in that: When the first trolley (72) at the two ends of the diagonal line moves synchronously in opposite directions, the sling (5) is pulled by the second steel wire rope (32) to rotate horizontally around the third direction (Z) as the rotation axis.

9. The eight-rope double-drum lifting device according to claim 7, characterized in that: When the first trolley (72) slides along the first track (71), the sling (5) is pulled by the first steel wire rope (31) to translate in the second direction.

10. The eight-rope double-drum lifting device according to claim 1, characterized in that: When the lifting drum (1) rotates synchronously in the opposite direction, the sling (5) is pulled by the first steel wire rope (31) and the second steel wire rope (32) to rise and fall synchronously along the third direction (Z); When the lifting drum (1) rotates synchronously in the same direction, the first steel wire rope (31) and the second steel wire rope (32) rise and fall synchronously along the third direction (Z).

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