Hoisting device of double-layer bearing cable and cable crane

Abstract

The present invention relates to the field of bridge engineering technology, and specifically to a lifting device and cable crane for double-layer load-bearing cables. The lifting device includes: at least two groups of sports car assemblies, the two groups of sports car assemblies being respectively used to be movably arranged on the upper load-bearing cables and the lower load-bearing cables; a lower hanger connected to the two groups of sports car assemblies, the lower hanger being used to be connected to the lifting object; and a movable connecting rod assembly, the two ends of which are respectively movably hinged to the two groups of sports car assemblies. The present application arranges separate and independent sports car assemblies on the upper and lower load-bearing cables, and uses a movable connecting rod to movably hinge the two sports car assemblies. When a deformation difference occurs in the double-layer load-bearing cables, the movement of the sports car assembly fluctuates, which first drives the movable connecting rod to change its position and posture, and then transmits 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. Furthermore, the excessively high precision requirements for adjusting the load-bearing cables are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge engineering, and particularly relates to a hoisting device of double-layer load bearing cable and a cable crane. BACKGROUND

[0002] The cable crane has the characteristics of large lifting height, large hoisting operation span, wide operation range and the like, and can play a role that other hoisting machines cannot play under certain conditions, and has become one of the main construction machines for building bridges across mountains, valleys, and rivers with large spans. The hoisting device, as an important hoisting device of the cable crane, generally realizes the movement and force transmission of the hoisting device by a corresponding number of running wheels and load bearing cables. Obviously, the larger the hoisting load of the hoisting device is, the larger the load bearing capacity of the required running wheels and cables is, and the more the required cables are. For most of the current hoisting loads, a single layer of running wheels and a single layer of load bearing cables are often used, and the cables are arranged horizontally across the bridge. However, for the hoisting of some large-span bridge steel beam sections, the length and weight of the steel beam are large, at this time, the load bearing capacity of the hoisting device needs to be improved by increasing the number of running wheels and load bearing cables. However, the over-wide hoisting device and load bearing cable have the risk of overturning and overturning of the hoisting device or uneven force on the middle load bearing cable leading to concentrated damage of the middle load bearing cable during hoisting and movement, and also put higher requirements on the adjustment of the sag of the load bearing cable of the same layer. Therefore, for the hoisting device with a large hoisting load, a double layer of running wheels and a double layer of load bearing cables should be used.

[0003] The double-layer load bearing cable hoisting device used in the prior art is generally connected by two pull plates, two layers of running wheels and a hoisting wheel using pin hinges, which effectively reduces the width of the load bearing cable. However, such a hoisting device has a high requirement for cable adjustment accuracy, and the sag and linear shape of the upper and lower load bearing cables must be completely parallel, otherwise the running wheels of one of the upper and lower layers will be overloaded, which will endanger the safety of construction. However, it is difficult to ensure complete consistency during cable adjustment, and even if the same type of load bearing cable is selected, there will inevitably be some differences in the material properties of the cable. Therefore, the uneven stress on the upper and lower running wheels is inevitable, which is not conducive to the safety of construction, and an innovative technical solution is needed to overcome the defects of the prior art. SUMMARY

[0004] In the related art, the double-layer load bearing cable hoisting device has the problem of overloading of the running wheels of one of the upper and lower layers, which endangers the safety of construction.

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

[0006] In combination with the first aspect, in an implementation, two first pin hinges are arranged at the centers of gravity of the two groups of the car components, and the two first pin hinges are respectively hingedly connected to two ends of the movable link assembly.

[0007] In combination with the first aspect, in an implementation, the car component comprises:

[0008] A walking wheel device movably arranged on the upper or lower load-bearing cable;

[0009] A lifting wheel device hingedly arranged below the walking wheel device, and the lifting wheel device is connected to the lower hanger through a winding cable.

[0010] In combination with the first aspect, in an implementation, the walking wheel device comprises:

[0011] At least one group of walking wheel sets movably arranged on the upper or lower load-bearing cable;

[0012] A second pin hinge arranged in the walking wheel set, and the second pin hinge is hingedly connected to the lifting wheel device through at least one pull plate.

[0013] In combination with the first aspect, in an implementation, the walking wheel device comprises a plurality of groups of the walking wheel set, each group of the walking wheel set is provided with two or three pulleys, and the pull plate is arranged between two adjacent groups of the walking wheel set.

[0014] In combination with the first aspect, in an implementation, the lifting wheel device comprises:

[0015] A second pin hinge hingedly connected to the pull plate;

[0016] At least one group of lifting wheel sets connected to the second pin hinge, and the lifting wheel set is connected to the lower hanger through the winding cable.

[0017] In combination with the first aspect, in an implementation, the lower hanger is provided with a lifting pulley, and the lifting pulley is connected to the lifting wheel set through the winding cable.

[0018] In combination with the first aspect, in an implementation, the movable link assembly comprises a plurality of links, and the plurality of links are arranged in a horizontal bridge direction with the center of the car component as the symmetry center.

[0019] In combination with the first aspect, in an implementation, a traction pulley set is arranged on the lower load-bearing cable, and the traction pulley set is connected to the car component mounted on the lower load-bearing cable.

[0020] In a second aspect, the embodiments of the present application provide a cable crane, which comprises the hoisting device according to any one of the preceding aspects.

[0021] The technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0022] The embodiments of the present application arrange two separate and independent car components on the upper and lower load-bearing cables, and use the movable connecting rod to movably connect the two car components. When the deformation difference of the double-layer load-bearing cables occurs, the movement fluctuation of the car components will first drive the movable connecting rod to change the position and posture, and then transmit the fluctuation to the other car component, thereby reducing the sensitivity of the two car components to the deformation difference of the load-bearing cables. Further, the high precision requirement of the load cable adjustment is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical schemes in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 It is a front view of the hoisting device of the double-layer load-bearing cable of the present application.

[0025] Figure 2 It is a side view of the car component of the present application.

[0026] In the figure: 1, car component; 11, running wheel device; 111, running wheel set; 112, second pin joint; 12, hoisting wheel device; 121, third pin joint; 122, hoisting wheel set; 2, upper layer load-bearing cable; 3, lower layer load-bearing cable; 4, lower hanging bracket; 41, hoisting pulley; 5, movable connecting rod assembly; 51, connecting rod; 6, first pin joint; 7, around cable; 8, pull plate; 9, traction pulley set. DETAILED DESCRIPTION

[0027] In order to make the person skilled in the art better understand the present application, the technical scheme in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] In the related art, the double-layer load-bearing cable hoisting device will have the phenomenon of overload of the running wheel of one layer, which will endanger the construction safety.

[0029] In a first aspect, asFigure 1 As shown in the drawings, the present application provides a hoisting device of double-layer load bearing cable, which comprises at least two groups of runner assemblies 1, a lower hanger 4 and a movable link assembly 5, wherein,

[0030] The at least two groups of runner assemblies 1 are respectively arranged on the upper load bearing cable 2 and the lower load bearing cable 3; the lower hanger 4 is connected with the two groups of runner assemblies 1, and the lower hanger 4 is used for being connected with a hoisted object; and the movable link assembly 5 is movably hinged at two ends thereof with the two groups of runner assemblies 1.

[0031] It is worth noting that in the above-mentioned embodiments, the separate runner assemblies arranged on the upper and lower load bearing cables are movably hinged by the movable link, and when the double-layer load bearing cable has a deformation difference, the movement fluctuation of the runner assemblies will first drive the movable link to change the position and posture, and then the fluctuation is transmitted to the other runner assembly, thereby reducing the sensitivity of the two runner assemblies to the deformation difference of the load bearing cable. Further, the high precision requirement for the load bearing cable adjustment is reduced.

[0032] In some preferred embodiments, in order to ensure the stability of the two runners during the traction process and avoid the overturning of the runner during the traction process, a first pin hinge 6 is arranged at the center of gravity of each of the two groups of runner assemblies 1, and the two first pin hinges 6 are movably hinged at two ends of the movable link assembly 5. Specifically, the two ends of the first pin hinge 6 are fixed by a fixed bolt.

[0033] It is worth noting that when the double-layer load bearing cable has a deformation difference, the position change of a single runner assembly 1 will not be directly reflected to the other runner assembly 1, but will first drive the movable link assembly 5 to change the position and posture, and then transmitted to the other runner assembly 1, thereby adapting to the serious uneven stress caused by the inconsistent deformation within a certain range.

[0034] Further, as shown in the drawings, the movable link assembly 5 comprises a plurality of links 51, and the plurality of links 51 are arranged symmetrically in the transverse bridge direction with the center of the runner assembly 1. Figure 2

[0035] In a specific embodiment of the present application, the movable link assembly 5 comprises six links 51, and the six links 51 are arranged symmetrically at both sides of the center of the runner assembly 1 to ensure the safety of the force of the link during the traction process and the stability of the runner.

[0036] In some optional embodiments, the hoisting device further comprises a traction pulley block 9 arranged on the lower load bearing cable 3, and the traction pulley block 9 is connected with the runner assembly 1 installed on the lower load bearing cable 3.

[0037] ​It can be understood that the traction sheave set 9 is used to pull the car assembly 1 to move on the lower bearing cable 3, so that the movable link assembly 5 drives the car assembly 1 on the upper bearing cable 2 to move. Further, the traction sheave set 9 is provided with a cable divider.

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

[0039] The walking wheel device 11 is movably arranged on the upper bearing cable 2 or the lower bearing cable 3; the lifting wheel device 12 is hingedly arranged below the walking wheel device 11, and the lifting wheel device 12 is connected to the lower hanger 4 through the hoisting cable 7.

[0040] Specifically, the walking wheel device 11 comprises: at least one set of walking wheel groups 111 and a second pin hinge 112; wherein,

[0041] The at least one set of walking wheel groups 111 is movably arranged on the upper bearing cable 2 or the lower bearing cable 3; the second pin hinge 112 is arranged in the walking wheel group 111, and the second pin hinge 112 is hingedly connected to the lifting wheel device 12 through the at least one pull plate 8.

[0042] Preferably, in order to uniformly transmit the load from the lifting wheel device 12 to the upper bearing cable 2 and the lower bearing cable 3, the second pin hinge 112 is hingedly connected to the lifting wheel device 12 through a plurality of pull plates 8.

[0043] Further, the walking wheel device 11 comprises: a plurality of sets of the walking wheel groups 111, each set of the walking wheel groups 111 is provided with 2 or 3 pulleys, and the pull plate 8 is arranged between any two adjacent sets of the walking wheel groups 111.

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

[0045] In some specific embodiments, as shown in Figure 2 In order to improve the carrying capacity and anti-overturning capacity of the hoisting equipment, two sets of walking wheel devices 11 are adopted in the embodiment, and each set of walking wheel devices 11 comprises 12 pulleys.

[0046] It is worth noting that in order to make the inclination angle of the movable link assembly 5 within a proper range (not too large), the height of the pull plate 8 of the upper car assembly 1 and the lifting wheel group 122 can be raised to lower the gravity center position and adjust the angle of the movable link assembly 5.

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

[0048] a third pin hinge 121 hinged with the pull plate 8; at least one group of hoisting wheel sets 122 connected with the third pin hinge 121, the hoisting wheel sets 122 being connected with the lower hanger 4 through the cable 7.

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

[0050] Further, the hoisting wheel sets 122 include 7 hoisting wheels, which are arranged in a 3-1-3 manner. The pull plates 8 are fixed by being tightly engaged with each other to avoid left and right shaking of the hoisting wheels during hoisting. The pull plates are connected with the upper trolley assembly 1 through the second pin hinge 112 and are fixed by bolts at both ends.

[0051] In some optional embodiments, the lower hanger 4 is provided with a hoisting pulley 41 connected with the hoisting wheel sets 122 through the cable 7. The lower hanger 4 is provided with a lifting hook for lifting goods.

[0052] It should be noted that in the above embodiments, although a certain displacement difference can be adapted to, the over-high precision requirement for the cable adjustment is avoided, but the cable adjustment of the bearing cable is still necessary. A too large displacement difference will cause a too large inclination angle of the movable connecting rod assembly 5, which will cause a serious uneven force on the upper and lower trolley assemblies 1, losing the original significance. Therefore, the consistency of the mileage and the length of the two ends of the double bearing cables should be ensured during the cable adjustment.

[0053] In the present embodiment, the hoisting device is divided into two parts, and the movable connecting rod assembly 5 hinged between the two parts is adapted to the relative deformation of the upper and lower bearing cables and ensures the longitudinal connection of the two parts. On the premise of ensuring the use function, the serious uneven force caused by the inconsistent deformation within a certain range can be limitedly adapted, the risk of insufficient bearing capacity caused by the uneven force of the hoisting device is reduced, the over-high precision requirement for the cable adjustment of the bearing cable is reduced, and the structure stress of the hoisting device is improved. Moreover, the hoisting device is modularized, and the self-weight of the hoisting device is significantly reduced.

[0054] In a second aspect, the present application provides a cable crane, which includes at least two groups of trolley assemblies 1, a lower hanger 4 and a movable connecting rod assembly 5; wherein,

[0055] The at least two groups of trolley assemblies 1 are respectively arranged on the upper bearing cable 2 and the lower bearing cable 3 in a movable manner. The lower hanger 4 is connected with the two groups of trolley assemblies 1 and is used to be connected with a hoisted object. The movable connecting rod assembly 5 is movably hinged at both ends with the two groups of trolley assemblies 1.

[0056] It is worth mentioning that in the above embodiment, the two separate and independent car components arranged on the upper and lower load-bearing cables are articulated by the movable link, and when the deformation difference of the double-layer load-bearing cable occurs, the movement fluctuation of the car component will first drive the position and posture of the movable link to change, and then the fluctuation is transmitted to the other car component, thereby reducing the sensitivity of the two car components to the deformation difference of the load-bearing cable. Further, the high precision requirement of the load cable adjustment is reduced.

[0057] In some preferred embodiments, in order to ensure the stability of the two cars during traction and avoid the car overturning during traction, a first pin joint 6 is arranged at the center of gravity of each of the two car components 1, and the two first pin joints 6 are respectively articulated with the two ends of the movable link assembly 5. Specifically, the two ends of the first pin joint 6 are fixed by a fixed bolt.

[0058] Further, as shown in the drawings, the movable link assembly 5 includes a plurality of links 51, and the plurality of links 51 are arranged symmetrically in the transverse bridge direction with the center of the car component 1. Figure 2

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

[0060] In some optional embodiments, the hoisting device further comprises a traction sheave group 9 arranged on the lower layer load-bearing cable 3, and the traction sheave group 9 is connected with the car component 1 installed on the lower layer load-bearing cable 3.

[0061] It can be understood that the traction sheave group 9 is used to move the car component 1 on the lower layer load-bearing cable 3, so that the movable link assembly 5 drives the car component 1 on the upper layer load-bearing cable 2 to move. Further, the traction sheave group 9 is provided with a cable divider.

[0062] In some optional embodiments, the car component 1 comprises a traveling wheel device 11 and a lifting wheel device 12; wherein,

[0063] The traveling wheel device 11 is movably arranged on the upper layer load-bearing cable 2 or the lower layer load-bearing cable 3, and the lifting wheel device 12 is articulated below the traveling wheel device 11, and the lifting wheel device 12 is connected with the lower hanger 4 through the around cable 7.

[0064] Specifically, the traveling wheel device 11 comprises at least one traveling wheel group 111 and a second pin joint 112; wherein,

[0065] ​at least one set of running wheel groups 111 movably arranged on the upper load bearing cable 2 or the lower load bearing cable 3; a second pin joint 112 arranged in the running wheel groups 111, the second pin joint 112 being hingedly connected to the lifting wheel device 12 through at least one pull plate 8.

[0066] Preferably, in order to uniformly transmit the load from the lifting wheel device 12 to the upper load bearing cable 2 and the lower load bearing cable 3, the second pin joint 112 is hingedly connected to the lifting wheel device 12 through a plurality of pull plates 8.

[0067] Further, the running wheel device 11 comprises a plurality of sets of running wheel groups 111, each set of running wheel groups 111 being provided with two or three pulleys, and the adjacent two sets of running wheel groups 111 being provided with the pull plate 8.

[0068] Optionally, the plurality of pull plates 8 are symmetrically arranged in the width direction of the vehicle assembly 1, and one pull plate 8 is arranged every 2-3 pulleys.

[0069] In some embodiments, as shown in Figure 2 In order to improve the carrying capacity and anti-overturning capacity of the lifting equipment, two sets of running wheel devices 11 are adopted in the embodiment, each set of running wheel devices 11 comprising 12 pulleys.

[0070] It is worth noting that in order to make the inclination angle of the movable linkage assembly 5 within a proper range (not too large), the height of the pull plate 8 of the upper vehicle assembly 1 and the lifting wheel group 122 can be raised to lower the gravity center position and adjust the angle of the movable linkage assembly 5.

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

[0072] The third pin joint 121 is hingedly connected to the pull plate 8, and the at least one set of lifting wheel groups 122 is connected to the third pin joint 121, and the lifting wheel groups 122 are connected to the lower lifting frame 4 through the winding cable 7.

[0073] It can be understood that the third pin joint 121 is fixed at both ends by bolts.

[0074] Further, the lifting wheel group 122 comprises seven lifting wheels, which are arranged in a 3-1-3 manner. The pull plates 8 are tightly engaged with each other to avoid the left and right shaking of the lifting wheels during lifting, and the pull plates are connected to the upper vehicle assembly 1 through the second pin joint 112 and fixed by the fixing bolts at both ends.

[0075] In some optional embodiments, the lower hanger 4 is provided with a lifting pulley 41 connected with the hoisting wheel set 122 through the winding cable 7. The lower hanger 4 is provided with a lifting hook for lifting goods.

[0076] In summary, the application uses two separate and independent car assemblies arranged by upper and lower bearing cables, and uses movable connecting rods to movably connect the two car assemblies. When the deformation difference of the double-layer bearing cables occurs, the fluctuation of the movement of the car assemblies will first drive the movable connecting rods to change the position and posture, and then transmit the fluctuation to the other car assembly, thereby reducing the sensitivity of the two car assemblies to the deformation difference of the bearing cables. Further, the high precision requirement of the bearing cable adjustment is reduced.

[0077] In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0078] It should be noted that in the present application, relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0079] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above.

Claims

1. A lifting device with double-layer load-bearing ropes, characterized in that: include: At least two groups of sports car assemblies (1), the two groups of sports car assemblies (1) are 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; A movable connecting rod assembly (5), both ends of which are respectively movably hinged to the two sets of sports car assemblies (1); 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 link assembly (5); The sports car assembly (1) comprises: a running wheel device (11) and a lifting wheel device (12); wherein the running wheel device (11) is movably arranged on the upper load-bearing cable (2) or the lower load-bearing cable (3); the 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); The movable link assembly (5) comprises a plurality of connecting rods (51), and the plurality of connecting rods (51) are symmetrically arranged in a transverse bridge direction with the center of the sports car assembly (1); A traction pulley block (9) is provided 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).

2. The lifting device according to claim 1, wherein: 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 provided in the running wheel assembly (111), and the second pin hinge (112) is hinged to the lifting wheel device (12) through at least one pull plate (8).

3. The lifting device according to claim 2, 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).

4. The lifting device according to claim 2, wherein: The lifting wheel device (12) comprises: a third pin hinge (121), which is hinged to the pull plate (8); At least one set of hoisting wheel groups (122) is connected to the third pin hinge (121), and the hoisting wheel group (122) is connected to the lower hanger (4) through the winding rope (7).

5. The lifting device according to claim 4, 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).

6. A cable crane, characterized in that: It includes: A lifting device as claimed in any one of claims 1 to 5.

Images