Hoisting equipment of double-layer bearing cable and cable crane

Abstract

The invention relates to the technical field of bridge engineering, in particular to hoisting equipment for a double-layer bearing cable and a cable crane. The hoisting equipment comprises at least two groups of sports car assemblies which are movably arranged on an upper-layer load-bearing cable and a lower-layer load-bearing cable respectively; the lower hanging bracket is connected with the two groups of sports car assemblies, and the lower hanging bracket is used for being connected with a hoisted object; the two ends of the movable connecting rod assembly are movably hinged to the two sports car assemblies correspondingly. The separated and independent sports car assemblies are arranged on the upper bearing cable and the lower bearing cable, the two sports car assemblies are movably hinged through the movable connecting rods, when the double-layer bearing cable has the deformation difference, movement of the sports car assemblies fluctuates, the movable connecting rods are driven to change the position posture firstly, then fluctuation is transmitted to the other sports car assembly, and therefore the two sports car assemblies can be separated from each other. Therefore, the sensitivity degree of the two sports car assemblies to the deformation difference of the bearing cable is reduced. And furthermore, the over-high precision requirement of the tightening on the load-bearing cable adjustment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of bridge engineering, and in particular to a lifting device of a double-layer load-bearing cable and a cable crane. Background Art

[0002] Cable cranes have the characteristics of large lifting height, large lifting span, and wide operating range. Under certain conditions, they can play a role that other lifting machinery cannot play. They are one of the main construction machinery for the construction of bridge projects across high mountains and canyons and large-span rivers. As an important lifting device of cable cranes, lifting equipment generally consists of a corresponding number of running wheels and load-bearing cables to achieve the movement of lifting equipment and the transmission of force. Obviously, the greater the lifting load of the lifting equipment, the greater the bearing capacity of the running wheels and cables required, and the more cables required. For most of the current lifting loads, single-layer running wheels and single-layer load-bearing cables are often used, and the cables are arranged transversely to the bridge. However, for the lifting of some large-span bridge steel beam sections, the length and weight of the steel beam are relatively large. At this time, the bearing capacity of the lifting equipment must be increased by increasing the number of running wheels and load-bearing cables. However, overly wide lifting equipment and load-bearing cables may cause the lifting equipment to flip over or the load-bearing cables to be unevenly stressed, resulting in concentrated damage to the middle load-bearing cables during lifting and moving. This also places higher requirements on the adjustment of the verticality of the load-bearing cables on the same layer. Therefore, for lifting equipment with large lifting loads, double-layer running wheels and double-layer load-bearing cables should be used.

[0003] The double-layer load-bearing cable lifting equipment used in the prior art is generally composed of two pull plates and two layers of running wheels and lifting wheels connected by pin hinges, which effectively reduces the width of the load-bearing cables. However, this type of lifting equipment has very high requirements on the accuracy of cable adjustment. It is necessary to ensure that the verticality and linearity of the upper and lower layers of load-bearing cables are completely parallel, otherwise the running wheels of one of the upper and lower layers will be overloaded, endangering construction safety. However, it is difficult to ensure complete consistency during the cable adjustment process, and even if the same type of load-bearing cables are selected, there will inevitably be certain differences in the material properties of the cables. Therefore, the uneven force on the upper and lower running wheels is inevitable, which is not conducive to construction safety. It is urgent to overcome the defects of the prior art through an innovative technical solution. Summary of the invention

[0004] In the related technology, the double-layer load-bearing cable lifting equipment may have the problem that the running wheels of one of the upper and lower layers may be overloaded, endangering the construction safety.

[0005] In a first aspect, the present application provides a lifting device for a double-layer load-bearing cable, comprising: at least two groups of sports car assemblies, a lower hanger and a movable connecting rod assembly; wherein, the at least two groups of sports car assemblies, the two groups of sports car assemblies are respectively used to be movably set on the upper load-bearing cable and the lower load-bearing cable; the lower hanger is connected to the two groups of the sports car assemblies, and the lower hanger is used to be connected to the lifting object; the movable connecting rod assembly, both ends of which are respectively movably hinged to the two groups of the sports car assemblies.

[0006] In combination with the first aspect, in one implementation, a first pin hinge is provided at the center of gravity of the two groups of the sports car assemblies, and the two first pin hinges are movably hinged to the two ends of the movable link assembly respectively.

[0007] In combination with the first aspect, in one implementation, the sports car component includes:

[0008] A running wheel device, which is movably arranged on the upper load-bearing cable or the lower load-bearing cable;

[0009] The hoisting wheel device is hinged below the traveling wheel device, and the hoisting wheel device is connected to the lower hanger through a cable.

[0010] In combination with the first aspect, in one implementation, the running wheel device includes:

[0011] At least one set of running wheels, which are movably arranged on the upper load-bearing cables or the lower load-bearing cables;

[0012] The second pin hinge is passed through the running wheel assembly, and the second pin hinge is hinged to the lifting wheel device through at least one pulling plate.

[0013] In combination with the first aspect, in one embodiment, the running wheel device includes: a plurality of running wheel groups, each running wheel group is provided with 2 or 3 pulleys, and the pull plate is provided between two adjacent running wheel groups.

[0014] In combination with the first aspect, in one embodiment, the lifting wheel device includes:

[0015] A second pin hinge, which is hinged to the pull plate;

[0016] At least one group of lifting wheels is connected to the second pin hinge, and the lifting wheels are connected to the lower hanger through the rope.

[0017] In combination with the first aspect, in one embodiment, a lifting pulley is provided on the lower hanger, and the lifting pulley is connected to the lifting wheel assembly through the winding cable.

[0018] In combination with the first aspect, in one embodiment, the movable link assembly includes a plurality of connecting rods, and the plurality of connecting rods are symmetrically arranged in a transverse direction with the center of the sports car assembly.

[0019] In combination with the first aspect, in one embodiment, a traction pulley block is arranged on the lower load-bearing cable, and the traction pulley block is connected to the sports car assembly installed on the lower load-bearing cable.

[0020] In a second aspect, an embodiment of the present application provides a cable crane, comprising: a lifting device as described in any one of the above.

[0021] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0022] The present application arranges separate independent sports car components on the upper and lower load-bearing cables, and uses a movable link to flexibly articulate the two sports car components. When the double-layer load-bearing cables have a deformation difference, the movement of the sports car component will first drive the movable link to change its position and posture, and then transmit the fluctuation to the other sports car component, thereby reducing the sensitivity of the two sports car components to the deformation difference of the load-bearing cables. In addition, the high precision requirements for the adjustment of the load-bearing cables are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a front view of the lifting equipment with double load-bearing cables for this application;

[0025] Figure 2 A side view of the sports car assembly of this application.

[0026] In the figure: 1, sports car assembly; 11, running wheel device; 111, running wheel group; 112, second pin hinge; 12, lifting wheel device; 121, third pin hinge; 122, lifting wheel group; 2, upper load-bearing cable; 3, lower load-bearing cable; 4, lower hanger; 41, lifting pulley; 5, movable connecting rod assembly; 51, connecting rod; 6, first pin hinge; 7, rope winding; 8, pull plate; 9, traction pulley group. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] In the related technology, the double-layer load-bearing cable lifting equipment may have the problem that the running wheels of one of the upper and lower layers may be overloaded, endangering the construction safety.

[0029] First, as Figure 1 As shown, the present application provides a double-layer load-bearing cable lifting device, which includes: at least two sets of sports car assemblies 1, a lower hanger 4 and a movable connecting rod assembly 5; wherein,

[0030] At least two groups of sports car assemblies 1, the two groups of sports car assemblies 1 are respectively used to be movably set on the upper load-bearing cables 2 and the lower load-bearing cables 3; a lower hanger 4, which is connected to the two groups of sports car assemblies 1, and the lower hanger 4 is used to be connected to the hoisted object; a movable connecting rod assembly 5, both ends of which are respectively movably hinged with the two groups of sports car assemblies 1.

[0031] It is worth noting that in the above embodiment, by arranging separate independent sports car assemblies on the upper and lower load-bearing cables, and using a movable link to movably articulate the two sports car assemblies, when the double-layer load-bearing cables have a deformation difference, the movement of the sports car assembly will first drive the movable link to change its position and posture, and then transmit the fluctuation to the other sports car assembly, thereby reducing the sensitivity of the two sports car assemblies to the deformation difference of the load-bearing cables. In addition, the high precision requirements for adjusting the load-bearing cables are reduced.

[0032] In some preferred embodiments, in order to ensure the stability of the two sports cars during towing and prevent the sports cars from overturning during towing, the center of gravity of the two sports car assemblies 1 is penetrated with a first pin hinge 6, and the two first pin hinges 6 are respectively movably hinged to the two ends of the movable link assembly 5. Specifically, the two ends of the first pin hinge 6 are fixed by fixing bolts.

[0033] It should be noted that when the double-layer load-bearing cable is deformed differently, since the two sports car assemblies 1 are hinged by a connecting rod, the position change of a single sports car assembly 1 will not directly affect the other sports car assembly 1. Instead, it first drives the movable connecting rod assembly 5 to change its position and posture, and then transmits it to the other sports car assembly 1, so as to adapt to the serious uneven force caused by the inconsistent deformation within a certain range.

[0034] Furthermore, if Figure 2 As shown, the movable link assembly 5 includes a plurality of connecting rods 51 , and the plurality of connecting rods 51 are symmetrically arranged in the transverse direction with the center of the sports car assembly 1 .

[0035] In a specific implementation of the present application, the movable link assembly 5 includes six links 51, and the six links 51 are symmetrically arranged on both sides of the sports car assembly 1 to ensure the force safety of the links during the traction process and the stability of the sports car.

[0036] In some optional embodiments, the lifting equipment further includes: a traction pulley group 9, wherein the traction pulley group 9 is arranged on the lower load-bearing cable 3, and the traction pulley group 9 is connected to the sports car assembly 1 installed on the lower load-bearing cable 3.

[0037] It can be understood that the traction pulley block 9 is used to pull the sports car assembly 1 to move on the lower load-bearing cable 3, so that the movable link assembly 5 drives the sports car assembly 1 on the upper load-bearing cable 2 to move. Further, the traction pulley block 9 is provided with a cable splitter.

[0038] In some optional embodiments, the sports car assembly 1 includes: a running wheel device 11 and a lifting wheel device 12; wherein,

[0039] A traveling wheel device 11 is movably arranged on the upper load-bearing cable 2 or the lower load-bearing cable 3; a lifting wheel device 12 is hinged below the traveling wheel device 11, and the lifting wheel device 12 is connected to the lower hanger 4 through a cable 7.

[0040] Specifically, the running wheel device 11 includes: at least one running wheel set 111 and a second pin hinge 112; wherein,

[0041] At least one set of running wheel group 111, which is movably arranged on the upper load-bearing cable 2 or the lower load-bearing cable 3; a second pin hinge 112, which is passed through the running wheel group 111, and the second pin hinge 112 is hinged to the lifting wheel device 12 through at least one pulling plate 8.

[0042] Preferably, in order to evenly transfer the load from the lifting wheel device 12 to the upper load-bearing cables 2 and the lower load-bearing cables 3 , the second pin hinge 112 is hinged to the lifting wheel device 12 through a plurality of pull plates 8 .

[0043] Furthermore, the running wheel device 11 comprises: a plurality of running wheel groups 111 , each running wheel group 111 is provided with 2 or 3 pulleys, and the pulling plate 8 is provided between two adjacent running wheel groups 111 .

[0044] Optionally, a plurality of pull plates 8 are symmetrically arranged in the width direction of the sports car assembly 1, and a pull plate 8 is arranged every 2 to 3 pulleys.

[0045] In some specific embodiments, Figure 2 As shown, in order to improve the load-bearing capacity and anti-overturning ability of the lifting equipment, two sets of running wheel devices 11 are used in this embodiment, and each set of running wheel devices 11 includes 12 pulleys.

[0046] It is worth noting that in order to make the inclination angle of the movable link assembly 5 within an appropriate range (not too large), the center of gravity can be lowered and the angle of the movable link assembly 5 can be adjusted by raising the height of the pull plate 8 and the lifting wheel assembly 122 of the upper sports car assembly 1.

[0047] In some preferred embodiments, the lifting wheel device 12 comprises: a third pin hinge 121 and at least one group of lifting wheel groups 122; wherein,

[0048] A third pin hinge 121 is hinged to the pull plate 8 ; at least one set of lifting wheel groups 122 is connected to the third pin hinge 121 , and the lifting wheel group 122 is connected to the lower hanger 4 through the winding cable 7 .

[0049] It can be understood that both ends of the third pin hinge 121 are fixed by bolts.

[0050] Furthermore, the lifting wheel assembly 122 includes 7 lifting wheels arranged in a 3-1-3 manner. The pull plates 8 are closely engaged with each other to prevent the lifting wheels from shaking left and right during the lifting process. The pull plates are connected to the upper sports car assembly 1 through the second pin hinge 112 and fixed by fixing bolts at both ends.

[0051] In some optional embodiments, a lifting pulley 41 is provided on the lower hanger 4, and the lifting pulley 41 is connected to the lifting wheel group 122 through the winding rope 7. A hook is provided on the lower hanger 4, and the hook is used to lift goods.

[0052] It should be noted that, although a certain displacement difference can be tolerated in the above-mentioned embodiment to avoid excessively high precision requirements for adjusting the cables, adjustment of the load-bearing cables is still necessary. Excessive displacement difference will lead to excessive inclination of the movable link assembly 5, which will cause serious uneven force on the upper and lower sports car assemblies 1 and lose their original meaning. Therefore, the consistency of the mileage of the anchor points at both ends of the double-layer load-bearing cables and the cable length should still be ensured during the cable adjustment process.

[0053] In this embodiment, the lifting device is divided into two parts, and the movable connecting rod assembly 5 hinged between the two parts adapts to the relative deformation of the upper and lower load-bearing cables and ensures the longitudinal connection between the two parts. Under the premise of ensuring the use function, it can adapt to the serious uneven force caused by the inconsistent deformation within a certain range, reduce the risk of insufficient bearing capacity of the lifting device due to uneven force overload, and also reduce the excessively high precision requirements for the adjustment of the load-bearing cables, thereby improving the structural force of the lifting device. In addition, the lifting device is modularized, and the deadweight of the lifting device is significantly reduced.

[0054] In a second aspect, the present application provides a cable crane, which comprises: at least two sets of sports car assemblies 1, a lower hanger 4 and a movable link assembly 5; wherein,

[0055] At least two groups of sports car assemblies 1, the two groups of sports car assemblies 1 are respectively used to be movably set on the upper load-bearing cables 2 and the lower load-bearing cables 3; a lower hanger 4, which is connected to the two groups of sports car assemblies 1, and the lower hanger 4 is used to be connected to the hoisted object; a movable connecting rod assembly 5, both ends of which are respectively movably hinged with the two groups of sports car assemblies 1.

[0056] It is worth noting that in the above embodiment, by arranging separate independent sports car assemblies on the upper and lower load-bearing cables, and using a movable link to movably articulate the two sports car assemblies, when the double-layer load-bearing cables have a deformation difference, the movement of the sports car assembly will first drive the movable link to change its position and posture, and then transmit the fluctuation to the other sports car assembly, thereby reducing the sensitivity of the two sports car assemblies to the deformation difference of the load-bearing cables. In addition, the high precision requirements for adjusting the load-bearing cables are reduced.

[0057] In some preferred embodiments, in order to ensure the stability of the two sports cars during towing and prevent the sports cars from overturning during towing, the center of gravity of the two sports car assemblies 1 is penetrated with a first pin hinge 6, and the two first pin hinges 6 are respectively movably hinged to the two ends of the movable link assembly 5. Specifically, the two ends of the first pin hinge 6 are fixed by fixing bolts.

[0058] Furthermore, if Figure 2 As shown, the movable link assembly 5 includes a plurality of connecting rods 51 , and the plurality of connecting rods 51 are symmetrically arranged in the transverse direction with the center of the sports car assembly 1 .

[0059] In a specific implementation of the present application, the movable link assembly 5 includes six links 51, and the six links 51 are symmetrically arranged on both sides of the sports car assembly 1 to ensure the force safety of the links during the traction process and the stability of the sports car.

[0060] In some optional embodiments, the lifting equipment further includes: a traction pulley group 9, wherein the traction pulley group 9 is arranged on the lower load-bearing cable 3, and the traction pulley group 9 is connected to the sports car assembly 1 installed on the lower load-bearing cable 3.

[0061] It can be understood that the traction pulley block 9 is used to pull the sports car assembly 1 to move on the lower load-bearing cable 3, so that the movable link assembly 5 drives the sports car assembly 1 on the upper load-bearing cable 2 to move. Further, the traction pulley block 9 is provided with a cable splitter.

[0062] In some optional embodiments, the sports car assembly 1 includes: a running wheel device 11 and a lifting wheel device 12; wherein,

[0063] A traveling wheel device 11 is movably arranged on the upper load-bearing cable 2 or the lower load-bearing cable 3; a lifting wheel device 12 is hinged below the traveling wheel device 11, and the lifting wheel device 12 is connected to the lower hanger 4 through a cable 7.

[0064] Specifically, the running wheel device 11 includes: at least one running wheel set 111 and a second pin hinge 112; wherein,

[0065] At least one set of running wheel group 111, which is movably arranged on the upper load-bearing cable 2 or the lower load-bearing cable 3; a second pin hinge 112, which is passed through the running wheel group 111, and the second pin hinge 112 is hinged to the lifting wheel device 12 through at least one pulling plate 8.

[0066] Preferably, in order to evenly transfer the load from the lifting wheel device 12 to the upper load-bearing cables 2 and the lower load-bearing cables 3 , the second pin hinge 112 is hinged to the lifting wheel device 12 through a plurality of pull plates 8 .

[0067] Furthermore, the running wheel device 11 comprises: a plurality of running wheel groups 111 , each running wheel group 111 is provided with 2 or 3 pulleys, and the pulling plate 8 is provided between two adjacent running wheel groups 111 .

[0068] Optionally, a plurality of pull plates 8 are symmetrically arranged in the width direction of the sports car assembly 1, and a pull plate 8 is arranged every 2 to 3 pulleys.

[0069] In some specific embodiments, Figure 2 As shown, in order to improve the load-bearing capacity and anti-overturning ability of the lifting equipment, two sets of running wheel devices 11 are used in this embodiment, and each set of running wheel devices 11 includes 12 pulleys.

[0070] It is worth noting that in order to make the inclination angle of the movable link assembly 5 within an appropriate range (not too large), the center of gravity can be lowered and the angle of the movable link assembly 5 can be adjusted by raising the height of the pull plate 8 and the lifting wheel assembly 122 of the upper sports car assembly 1.

[0071] In some preferred embodiments, the lifting wheel device 12 comprises: a third pin hinge 121 and at least one group of lifting wheel groups 122; wherein,

[0072] A third pin hinge 121 is hinged to the pull plate 8 ; at least one set of lifting wheel groups 122 is connected to the third pin hinge 121 , and the lifting wheel group 122 is connected to the lower hanger 4 through the winding cable 7 .

[0073] It can be understood that both ends of the third pin hinge 121 are fixed by bolts.

[0074] Furthermore, the lifting wheel assembly 122 includes 7 lifting wheels arranged in a 3-1-3 manner. The pull plates 8 are closely engaged with each other to prevent the lifting wheels from shaking left and right during the lifting process. The pull plates are connected to the upper sports car assembly 1 through the second pin hinge 112 and fixed by fixing bolts at both ends.

[0075] In some optional embodiments, a lifting pulley 41 is provided on the lower hanger 4, and the lifting pulley 41 is connected to the lifting wheel group 122 through the winding rope 7. A hook is provided on the lower hanger 4, and the hook is used to lift goods.

[0076] In summary, the present application arranges separate independent sports car components on the upper and lower load-bearing cables, and uses a movable link to flexibly articulate the two sports car components. When the double-layer load-bearing cables have a deformation difference, the movement of the sports car component will first drive the movable link to change its position and posture, and then transmit the fluctuation to the other sports car component, thereby reducing the sensitivity of the two sports car components to the deformation difference of the load-bearing cables. In addition, the high precision requirements for the adjustment of the load-bearing cables are reduced.

[0077] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0078] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0079] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A lifting device with double-layer load-bearing cables, characterized in that: include: At least two groups of sports car assemblies (1), the two groups of sports car assemblies (1) being respectively used for being movably arranged on the upper load-bearing cable (2) and the lower load-bearing cable (3); A lower hanger (4) connected to the two groups of sports car assemblies (1), the lower hanger (4) being used to be connected to a hoisted object; The two ends of the movable connecting rod assembly (5) are respectively movably hinged to the two groups of sports car assemblies (1).

2. The lifting device according to claim 1, characterized in that: A first pin hinge (6) is provided at the center of gravity of the two groups of sports car assemblies (1), and the two first pin hinges (6) are respectively movably hinged to the two ends of the movable connecting rod assembly (5).

3. The lifting device according to claim 1, characterized in that: The sports car assembly (1) comprises: A running wheel device (11) is movably arranged on the upper load-bearing cable (2) or the lower load-bearing cable (3); A lifting wheel device (12) is hinged below the running wheel device (11), and the lifting wheel device (12) is connected to the lower hanger (4) via a winding cable (7).

4. The lifting device according to claim 3, characterized in that: The running wheel device (11) comprises: At least one set of running wheel groups (111), which is movably arranged on the upper load-bearing cable (2) or the lower load-bearing cable (3); A second pin hinge (112) is inserted into the running wheel assembly (111), and the second pin hinge (112) is hingedly connected to the lifting wheel device (12) through at least one pulling plate (8).

5. The lifting device according to claim 4, characterized in that: The running wheel device (11) comprises: a plurality of running wheel groups (111), each running wheel group (111) is provided with two or three pulleys, and a pull plate (8) is provided between two adjacent running wheel groups (111).

6. The lifting device according to claim 4, characterized in that: The lifting wheel device (12) comprises: A third pin hinge (121), which is hinged to the pull plate (8); At least one group of lifting wheel groups (122) is connected to the third pin hinge (121), and the lifting wheel group (122) is connected to the lower hanger (4) through the winding rope (7).

7. The lifting device according to claim 6, characterized in that: The lower hanger (4) is provided with a lifting pulley (41), and the lifting pulley (41) is connected to the lifting wheel group (122) through the winding rope (7).

8. The lifting device according to claim 1, characterized in that: The movable link assembly (5) comprises a plurality of link rods (51), and the plurality of link rods (51) are symmetrically arranged in the transverse direction with the center of the sports car assembly (1).

9. The lifting device according to claim 1, characterized in that: Also includes: A traction pulley block (9), wherein the traction pulley block (9) is arranged on the lower load-bearing cable (3), and the traction pulley block (9) is connected to the sports car assembly (1) installed on the lower load-bearing cable (3).

10. A cable crane, characterized in that: It includes: A lifting device as claimed in any one of claims 1 to 9.

Images