A cable crane lifting tool and lifting device

Abstract

This application discloses a lifting device and lifting apparatus for a cable crane, relating to the field of bridge construction equipment technology. The lifting device includes a spreader beam for connecting to a lifting mechanism; a connecting mechanism for connecting to a steel truss girder; and a rope loop, the middle of which is wound around the spreader beam, passing over both ends of the spreader beam and connecting to the connecting mechanism. When using this lifting device, the lifting mechanism is lowered to the top of the steel truss girder, the lifting mechanism is connected to the spreader beam, the middle of the rope loop is wound around the spreader beam, passing over both ends of the spreader beam and connecting to the connecting mechanism, and the connecting mechanism is connected to the steel truss girder. At least two sets of lifting devices are used during the lifting process. This lifting device uses a rope loop to connect the spreader beam and the connecting mechanism. The flexible connection structure has high coordination and can adapt to small-angle rotations generated when multiple sets of lifting devices are used to lift the steel truss girder at multiple points, reducing adverse effects on the lifting devices and improving the safety of the construction process.

Description

Technical Field

[0001] This invention relates to the field of bridge construction equipment technology, specifically to a cable crane lifting tool and lifting device. Background Technology

[0002] Cable cranes are a common type of hoisting device used in bridge construction.

[0003] Currently, when using cable cranes for the construction of large-tonnage steel trusses, it is necessary to weld lifting lugs onto the steel truss before using the cable crane to carry the lifting equipment for the lifting operation. The traditional method for connecting the lifting equipment is as follows: the lifting equipment is made of steel pipes or large-section steel to form a rigid frame or component; the lifting equipment is connected to the steel truss lifting lugs by pins; and the lifting equipment is connected to the lower frame of the cable crane by pins that switch the horizontal direction. The two pins are arranged differently in the horizontal direction to assist the swing of the steel truss.

[0004] Existing technologies have the problem that it is difficult to adjust the rotation angle of the steel truss beam significantly during hoisting, which can easily cause adverse reactions to the lifting device connectors. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the purpose of this invention is to provide a lifting tool and lifting device for cable cranes, which can solve the problem that it is difficult to adjust the rotation angle of the steel truss beam by a large margin during the lifting process, and that the lifting tool connectors are prone to adverse reactions.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A lifting device for a cable crane, comprising:

[0008] The spreader beam is used to connect to the hoisting mechanism;

[0009] A connecting mechanism for connecting to a steel truss beam;

[0010] A rope loop, the middle of which is wound around the carrying pole beam, and the rope loop passes around both ends of the carrying pole beam and is connected to the connecting mechanism.

[0011] Based on the above technical solutions,

[0012] In some alternative embodiments, the connecting mechanism includes a main lifting shaft for insertion into the lifting lugs of the steel truss, and the rope loops are wound around the two ends of the spreader beam on the main lifting shaft.

[0013] In some alternative embodiments, the main lifting shaft includes:

[0014] A pin that passes through the lifting lugs provided on the steel truss beam;

[0015] Two rollers are respectively located at both ends of the pin shaft. The rollers are provided with grooves, and the two ends of the rope loop are wound around the grooves.

[0016] In some alternative solutions, limit plates are provided at both ends of the pin, and bolt fixing holes are provided on the lifting lugs. The two limit plates are connected by bolts passing through the bolt fixing holes.

[0017] In some alternative designs, an arc-shaped saddle is provided above the spreader beam, and the middle of the rope loop is wound around the arc-shaped saddle.

[0018] In some alternative designs, the arc-shaped saddle is provided with two spaced-apart slides, and the rope loop is wound around the slides.

[0019] In some alternative solutions, the gap between the arc-shaped saddle and the spreader beam is filled with concrete.

[0020] In some alternative designs, rubber sheets are provided at the lower ends of both sides of the carrying pole beam, and the rope loops pass around the rubber sheets at the lower ends of the carrying pole beam.

[0021] In some alternative designs, the two ends of the spreader beam are provided with ear plate structures for connection with the pin shaft of the hoisting mechanism.

[0022] A cable crane lifting device comprising two sets of the above-described cable crane lifting tools.

[0023] Compared with the prior art, the advantages of the present invention are as follows:

[0024] When using this lifting device, the lifting mechanism is lowered to the top of the steel truss, and then connected to the spreader beam. The middle of the rope loop is wound around the spreader beam, passing over both ends of the spreader beam and connecting to the connecting mechanism. The connecting mechanism is then connected to the steel truss. At least two sets of lifting devices are used during the lifting process. This lifting device uses a rope loop to connect the spreader beam and the connecting mechanism. The flexible connection structure has high coordination and can adapt to small-angle rotations when using multiple sets of lifting devices to lift the steel truss at multiple points. This reduces adverse effects on the lifting devices, improves the safety of the construction process, and solves the problem in existing technologies where it is difficult to adjust the rotation angle of the steel truss during lifting, which can easily cause adverse reactions to the lifting device connectors. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram of an embodiment of a cable crane lifting device according to this application;

[0027] Figure 2 This is a side view of an embodiment of a cable crane lifting device according to this application;

[0028] Figure 3 This is a structural schematic diagram of an embodiment of a cable crane hoisting device according to this application.

[0029] In the diagram: 1. Spreader beam; 11. Arc-shaped saddle; 12. Slide rail; 2. Lifting mechanism; 3. Connecting mechanism; 31. Main lifting shaft; 311. Roller; 312. Pin shaft; 4. Steel truss beam; 41. Lifting lug; 5. Rope loop; 6. Rubber sheet; 7. Limiting plate. Detailed Implementation

[0030] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] The following detailed description, in conjunction with the accompanying drawings, provides an embodiment of a cable crane lifting tool and lifting device according to this application.

[0032] like Figure 1 As shown in the figure, this application embodiment provides a lifting device for a cable crane, including:

[0033] The spreader beam 1 is used to connect with the hoisting mechanism 2;

[0034] Connection mechanism 3, which is used to connect with steel truss beam 4;

[0035] The rope loop 5 is wrapped around the middle of the carrying pole beam 1, and the rope loop 5 passes around both ends of the carrying pole beam 1 and is connected to the connecting mechanism 3.

[0036] When using this lifting device, the lifting mechanism 2 is lowered to the top of the steel truss beam 4, and the lifting mechanism 2 is connected to the spreader beam 1. The middle of the rope loop 5 is wrapped around the spreader beam 1, and then around both ends of the spreader beam 1 to connect with the connecting mechanism 3. The connecting mechanism 3 is connected to the steel truss beam 4. At least two sets of lifting devices are used during the lifting process. This lifting device uses the rope loop 5 to connect the spreader beam 1 and the connecting mechanism 3. The flexible connection structure has high coordination and can adapt to small-angle rotation when using multiple sets of lifting devices to lift the steel truss beam 4 at multiple points. This reduces the adverse effects on the lifting devices, improves the safety of the construction process, and solves the problem in the existing technology that it is difficult to adjust the rotation angle of the steel truss beam significantly during the lifting process, which easily causes adverse reactions to the lifting device connectors.

[0037] like Figure 2 As shown, in some optional embodiments, the connecting mechanism 3 includes a main lifting shaft 31, which is used to be inserted into the lifting lug 41 of the steel truss beam 4, and the rope loop 5 is wrapped around the two ends of the spreader beam 1 and wound around the main lifting shaft 31.

[0038] In this embodiment, the structure of the connecting mechanism 3 is described. The main lifting shaft 31 is inserted into the lifting lug 41 of the steel truss beam 4, and the rope loop 5 is wrapped around the two ends of the spreader beam 1 and around the main lifting shaft 31. The stress condition of the lifting device is better, and it is more convenient to connect the main lifting shaft 31 and the steel truss beam 4.

[0039] like Figure 1 and Figure 2 As shown, in some optional embodiments, the main lifting shaft 31 includes:

[0040] Pin 312 passes through lifting lug 41 set on steel truss beam 4;

[0041] Two rollers 311 are respectively set at both ends of the pin 312. The rollers 311 are provided with grooves, and the two ends of the rope loop 5 are wound in the grooves.

[0042] In this embodiment, the structure of the main lifting shaft 31 is described, which includes rollers 311 and pins 312. The pins 312 pass through the lifting lugs 41 provided on the steel truss beam 4. Rollers 311 are provided at both ends of the pins 312. Slide grooves are provided on the rollers 311. The lower end of the rope loop 5 is wound in the slide groove to prevent asynchronous phenomena during the lifting process and enhance the coordination of the lifting device.

[0043] like Figure 2 As shown, in some optional embodiments, both ends of the pin 312 are provided with limit plates 7, and the lifting ear plate 41 is provided with bolt fixing holes. The two limit plates 7 are connected by bolts passing through the bolt fixing holes.

[0044] In this embodiment, limiting plates 7 are provided at both ends of the pin 312. The limiting plates 7 are located on the side of the roller 311 away from the lifting ear plate 41. The lifting ear plate 41 is provided with bolt fixing holes. The two limiting plates 7 are connected by bolts passing through the bolt fixing holes, making the roller 311 more stable and safer to use.

[0045] like Figure 2 As shown, in some optional embodiments, an arc-shaped saddle 11 is provided above the spreader beam 1, and the middle part of the rope loop 5 is wound around the arc-shaped saddle 11.

[0046] In this embodiment, an arc-shaped saddle 11 is provided on the spreader beam 1. The middle part of the rope loop 5 is wrapped around the arc-shaped saddle 11, which can reduce the wear of the upper side of the spreader beam 1 on the rope loop 5 and protect the rope loop 5. The arc-shaped saddle 11 can also reduce the pressure on the rope loop 5 and improve safety.

[0047] like Figure 2 As shown, in some optional embodiments, the arc-shaped saddle 11 is provided with two spaced slides 12, and the rope loop 5 is wound inside the slides 12.

[0048] In this embodiment, two spaced slide rails 12 are provided on the arc-shaped saddle 11. The rope loop 5 is wound inside the slide rail 12, which can prevent asynchronous phenomena during the hoisting process and enhance the coordination of the hoisting tool.

[0049] In some alternative embodiments, the gap between the arc-shaped saddle 11 and the spreader beam 1 is filled with concrete.

[0050] In this embodiment, the gap between the arc-shaped saddle 11 and the spreader beam 1 is filled with concrete, which can prevent the arc-shaped saddle 11 from deforming due to the tension of the hoisted load, enhance the stability of the hoisting device, and thus improve the safety of the hoisting process.

[0051] like Figure 1 or Figure 2 As shown, in some optional embodiments, rubber sheets 6 are provided at the lower ends of both sides of the carrying pole beam 1, and the rope loop 5 passes around the rubber sheets 6 at both ends of the lower end of the carrying pole beam 1.

[0052] In this embodiment, rubber sheets 6 are provided at the lower ends of both sides of the spreader beam 1. When the rope loop 5 passes around the spreader beam 1, it will come into contact with the rubber sheets 6 at both ends of the lower end of the spreader beam 1. This can reduce the wear of the rope loop 5 on the spreader beam 1, protect the rope loop 5, improve the durability of the lifting device, and thus improve the safety performance.

[0053] In some alternative embodiments, the two ends of the spreader beam 1 are provided with ear plate structures for connection with the pin shaft of the hoisting mechanism 2.

[0054] In this embodiment, ear plate structures are provided at both ends of the spreader beam 1 to facilitate connection with the pin shaft of the hoisting mechanism 2, making the connection effect better and more convenient, and improving the hoisting efficiency.

[0055] like Figure 1-3 As shown, a cable crane lifting device includes two sets of the above-mentioned cable crane lifting tools.

[0056] When using this lifting device, two sets of lifting mechanisms 2 are lowered to the top of both ends of the steel truss beam 4, connecting the lifting mechanisms 2 to the spreader beam 1. The middle of the rope loop 5 is wound around the slide rail 12 of the arc-shaped saddle 11 on the spreader beam 1, and the rope loop 5 is wound around both ends of the spreader beam 1 and into the slide groove of the rollers 311 at both ends of the main lifting shaft 31. The main lifting shaft 31 is inserted into the lifting lugs 41 on the steel truss beam 4. After the connection is completed, the lifting mechanisms 2 at both ends of the steel truss beam 4 simultaneously drive the two sets of lifting devices to move the steel truss beam 4. This lifting device uses rope loops 5 to connect the spreader beam 1 and the connecting mechanism 3. The flexible connection structure has high coordination and can adapt to small-angle rotation when lifting the steel truss beam 4 at multiple points using multiple sets of lifting devices. This reduces the adverse effects on the lifting devices, improves the safety of the construction process, and solves the problem in the prior art that it is difficult to adjust the rotation angle of the steel truss beam by a large margin during the lifting process, which easily causes adverse reactions to the connecting parts of the lifting device.

[0057] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0058] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0059] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A cable crane lifting device, characterized in that, It includes two sets of lifting equipment, each set of lifting equipment includes: The flat beam (1) has ear plate structures at both ends for connecting with the two sets of hoisting mechanisms (2) by pins respectively; A connecting mechanism (3) is used to connect with the steel truss beam (4); A rope loop (5) is wound around the flat beam (1) in the middle, and the rope loop (5) passes around both ends of the flat beam (1) and is connected to the connecting mechanism (3); The connecting mechanism (3) includes a main lifting shaft (31), which is used to be inserted into the lifting lug (41) of the steel truss beam (4), and the rope loop (5) is wrapped around the two ends of the spreader beam (1) and wound around the main lifting shaft (31). The main lifting shaft (31) includes: A pin (312) passes through the lifting lug (41) provided on the steel truss (4); Two rollers (311) are respectively set at both ends of the pin (312). The rollers (311) are provided with grooves, and the two ends of the rope loop (5) are wound in the grooves. An arc-shaped saddle (11) is provided above the flat beam (1), and the middle part of the rope loop (5) is wound around the arc-shaped saddle (11); The arc-shaped saddle (11) is provided with two spaced slides (12), and the rope loop (5) is wound inside the slides (12); When using this hoisting device, lower two sets of hoisting tools to the top of both ends of the steel truss beam (4), connect the hoisting mechanism (2) with the spreader beam (1), the middle of the rope loop (5) is wrapped in the slide (12) of the arc saddle (11) on the spreader beam (1), the rope loop (5) passes around the two ends of the spreader beam (1) and is wrapped in the slide groove of the rollers (311) at both ends of the main hoisting shaft (31), the main hoisting shaft (31) is inserted into the hoisting ear plate (41) on the steel truss beam (4), after the connection is completed, the hoisting mechanism (2) at both ends of the steel truss beam (4) simultaneously drives the two sets of hoisting tools to move the steel truss beam (4).

2. The cable crane hoisting device as described in claim 1, characterized in that, Both ends of the pin (312) are provided with limit plates (7), and the lifting ear plate (41) is provided with bolt fixing holes. The two limit plates (7) are connected by bolts passing through the bolt fixing holes.

3. The cable crane hoisting device as described in claim 1, characterized in that, The gap between the arc-shaped saddle (11) and the flat beam (1) is filled with concrete.

4. The cable crane hoisting device as described in claim 1, characterized in that, Rubber sheets (6) are provided at the lower ends of both sides of the carrying pole beam (1), and the rope loop (5) passes around the rubber sheets (6) at both sides of the lower end of the carrying pole beam (1).

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