Movable crane walking device based on suspension bridge main cable

Abstract

The utility model relates to the field of mobile cranes, and discloses a mobile crane walking device based on a suspension bridge main cable, which comprises a hoisting mechanism, two rails and two walking mechanisms, the two walking mechanisms are respectively arranged on two sides of the hoisting mechanism, the lower ends of the two walking mechanisms are respectively hinged with at least two walking roller assemblies, and the two walking roller assemblies are arranged on the rails. The walking roller assembly can move on the track, and the track is made of rigid materials and arranged on a suspension bridge main cable. The cable is not easy to clamp, and the main cable is not damaged.

Description

Technical Field

[0001] The utility model relates to the field of mobile cranes, in particular to a mobile crane traveling device based on a main cable of a suspension bridge. Background Art

[0002] In the construction of suspension bridges, it is usually necessary to construct two main cables first, so that the main cables serve as the main upper load-bearing components, and then set up a mobile crane on the two main cables. The two sides of the mobile crane move on the main cables through a traveling mechanism respectively, and the traction device provides the traveling mechanism with moving power, so that the main cables are used as the main load-bearing structure, and the components and materials are transported to the set position by the mobile crane to facilitate construction and transportation.

[0003] However, the prior art usually sets the traveling mechanism directly on the main cable. The main cable is arc-shaped and is subjected to wind load shaking. The traveling mechanism cannot adapt well to the shape of the main cable. Therefore, the traveling mechanism is easily stuck on the main cable and cannot move, and it is also easy to damage the main cable. Utility Model Content

[0004] The utility model aims to provide a mobile crane traveling device based on the main cable of a suspension bridge, which is not easy to get stuck and will not damage the main cable.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: a mobile crane traveling device based on the main cable of a suspension bridge, including a track and a traveling mechanism, at least two traveling roller assemblies are hinged at the lower end of the traveling mechanism, the traveling roller assemblies can move on the track, the track is made of rigid material, and the track is arranged on the main cable of the suspension bridge.

[0006] The beneficial effects of this program are:

[0007] This solution sets a track on the main cable. Through the cooperation of the walking roller assembly and the track, since the track is made of rigid material, has high hardness and small deformation, it can effectively support the walking roller assembly, thereby accelerating the movement speed of the walking roller assembly. The track is set between the walking roller assembly and the main cable to avoid friction between the walking roller assembly and the main cable, thereby reducing damage to the main cable. When the walking roller assembly passes through an uneven place on the main cable, the walking roller assembly will produce a large amount of shaking, and the position where the walking mechanism and the walking roller assembly are hinged can release this shaking, thereby reducing the shaking when the present invention transports materials and ensuring construction safety. In the prior art, the main cable is approximately a parabola, and the track is adapted to the shape of the main cable, and the track is also approximately a parabola as a whole. Since different walking roller assemblies are located in different positions, the curvature of the main cable at different positions is different. If the walking mechanism and the walking roller assembly are rigidly connected, the walking roller assembly cannot adapt well to the shape of the main cable, and there is a possibility that some positions are vacant, which reduces the construction safety. In this solution, the walking mechanism and the walking roller assembly are hinged, and the walking roller assembly can rotate relative to the walking mechanism and automatically adapt to the angle according to the shape of the main cable, and fit the main cable more closely, so that the walking roller assembly is not easy to get stuck, ensuring construction safety. Furthermore, the walking roller assembly includes at least two walking rollers, and both ends of the walking roller are provided with a limit portion, the limit portion radially protrudes relative to the cross section of the walking roller, and the width of the track is less than the spacing between the two limit portions.

[0008] Furthermore, the travel roller is a horizontally arranged cylinder with an annular cross-section, and the travel roller assembly also includes an assembly shell, an inner side of which is provided with a rotating shaft, which passes through the travel roller and is slidably and rotatably connected to the travel roller, and a gap is left between the travel roller and the assembly shell.

[0009] Furthermore, a bottom plate is provided at the bottom of the component shell, and anti-slip ear plates are vertically provided on both sides of the bottom plate. Two anti-slip protrusions are provided on the inner side of the anti-slip ear plates. The track is an I-beam. The spacing between the two anti-slip protrusions is between the upper flange width and the web thickness of the I-beam. The spacing between the two anti-slip ear plates is greater than the upper flange width of the I-beam.

[0010] Furthermore, it also includes a traction mechanism, which includes a traction cable, a traction pulley and two winches. The winches are all arranged at the same fixed end of the main cable of the suspension bridge. The traction pulley is fixed on the walking mechanism. The traction cable passes through the traction pulley. The two ends of the traction cable are respectively connected to the two winches.

[0011] Furthermore, damping is provided at the hinge positions of the walking mechanism and the walking roller assembly.

[0012] This solution also has the following effects:

[0013] 1. The lateral movement of the walking roller assembly is limited by the limit part to ensure that the walking roller assembly will not derail laterally.

[0014] 2. When strong winds blow, the main cable will produce lateral deformation, which may easily hinder the rolling of the walking roller. In this solution, a gap is left between the walking roller and the component shell, allowing the walking roller to move laterally relative to the component shell, thereby being able to adapt to the deformation of the main cable to a certain extent, thereby making the rolling of the walking roller smoother.

[0015] 3. When the deviation between the center lines of the running roller and the track is large, eccentric force is easily generated between the running roller and the track, and the running roller is easily tilted to one side of the track, resulting in derailment; in this solution, the upper flange of the I-beam section of the track is limited by the bottom plate, the anti-slip lug plate and the anti-slip protrusion, thereby preventing the running roller from derailing due to tilting.

[0016] 4. When the material lifted by the lifting mechanism is shaken due to wind load, the hinge position of the lifting mechanism and the traveling mechanism can release the shaking, thereby reducing the impact of wind load on the stability of the traveling mechanism and ensuring construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional axonometric diagram of an embodiment;

[0018] Figure 2 It is a front view of the track and the running mechanism of the embodiment;

[0019] Figure 3 A three-dimensional axonometric view of the walking roller assembly of the embodiment;

[0020] Figure 4 A top view of the walking roller assembly of the embodiment;

[0021] Figure 5 It is a schematic diagram of the adjustment of the walking mechanism of the embodiment when it moves;

[0022] Figure 6 Schematic diagram of the traction mechanism of the embodiment. DETAILED DESCRIPTION

[0023] The following is further described in detail through specific implementation methods:

[0024] The figure marks in the drawings of the specification include: truss frame 11, lifting winch 12, lifting cable 13, walking mechanism 2, component housing 31, walking roller 32, limiting portion 33, rotating shaft 34, bottom plate 35, anti-slip ear plate 36, anti-slip protrusion 37, track 4, upper flange 41, traction steel cable 51, traction pulley 52, first winch 53, second winch 54, main cable 6.

[0025] Example

[0026] The embodiment is basically as follows Figure 1-6 As shown: a mobile crane traveling device based on the main cable of a suspension bridge, including a lifting mechanism, two traction mechanisms, two tracks 4 and two traveling mechanisms 2.

[0027] like Figure 1 As shown, the lifting mechanism includes a truss frame 11, a lifting winch 12 is bolted inside the truss frame 11, a lifting cable 13 is connected to the lifting winch 12, and the lower end of the lifting cable 13 can be connected to the material to be transported; Figure 1 , Figure 2 As shown, the two walking mechanisms 2 are respectively hinged on both sides of the lifting mechanism, and two walking roller assemblies are hinged at the lower ends of the two walking mechanisms 2. The hinge mode of the two structures in this embodiment is: through an articulated shaft passing through the two structures at the same time, and being rotatably connected with the two structures at the same time, there is a certain friction force between the articulated shaft and the two structures, thereby forming damping, and only when the external force is greater than the friction force, the articulated shaft will rotate relative to the two structures.

[0028] like Figure 3 As shown, the walking roller assembly includes an assembly housing 31 and two walking rollers 32. The assembly housing 31 is a long strip housing. Two rotating shafts 34 are bolted to the width direction of the inner side of the assembly housing 31. The centers of the two rotating shafts 34 are both located on the longitudinal (length direction) center axis of the assembly housing 31. The rotating shafts 34 pass through the walking rollers 32 and are connected to the walking rollers 32 in a sliding and rotating manner. Figure 4 As shown, there is a gap between the travel roller 32 and the component housing 31 .

[0029] like Figure 3 , Figure 4 As shown, the travel rollers are all horizontally arranged cylinders with annular cross-sections. Both ends of the travel roller 32 are provided with a limit portion 33, which is an annular disc. The limit portion 33 radially protrudes relative to the cross-section of the travel roller 32, that is, the outer diameter of the limit portion 33 is larger than the outer diameter of the travel roller 32, and the width of the track 4 is smaller than the spacing between the two limit portions 33. The travel roller can roll on the track 4, which is an I-beam. The track 4 is arranged in sections, and a rail clamp is provided at the end of each section of the track 4. The rail clamp is clamped on the main cable 6, and an elastic member is provided on the rail clamp. One side of the elastic member is welded to the rail clamp, and the other side uses its own elasticity to press on the lower flange of the I-beam of the track 4.

[0030] like Figure 3As shown, a bottom plate 35 is integrally formed at the bottom of the component shell 31, and anti-slip ear plates 36 are vertically welded on both sides of the bottom plate 35. Two anti-slip protrusions 37 are welded on the inner side of each anti-slip ear plate 36. The spacing between the two anti-slip protrusions 37 is between the width of the upper flange 41 of the I-beam and the thickness of the web, and the spacing between the two anti-slip ear plates 36 is greater than the width of the upper flange 41 of the I-beam.

[0031] like Figure 6 As shown, the traction mechanism includes a traction cable 51, a traction pulley 52, a first hoist 53 and a second hoist 54. The first hoist 53 and the second hoist 54 are both arranged at the same fixed end of the main cable 6 of the suspension bridge. Figure 2 As shown, the traction pulley 52 is bolted to the left end of the walking mechanism 2, as shown in FIG. Figure 6 As shown, the walking mechanism 2 is schematically represented by a rectangular frame, the traction cable 51 passes through the traction pulley 52, and the two ends of the traction cable 51 are respectively connected to the first hoist 53 and the second hoist 54. Since the main cable 6 is a parabola, two of the present inventions can be installed on one main cable 6 according to the situation, and the corresponding traction mechanisms are respectively set at different fixed ends of the main cables 6, so that the transportation range covers the entire length of the main cable 6.

[0032] A method for using a mobile crane traveling device based on the main cable 6 of a suspension bridge is as follows:

[0033] 1. The first hoist 53 and the second hoist 54 tighten the traction cable 51, thereby driving the lifting mechanism to approach the fixed end of the main cable 6; the first hoist 53 and the second hoist 54 loosen the traction cable 51, and the lifting mechanism approaches the midpoint of the main cable 6 under the action of gravity.

[0034] 2. When strong winds blow, the main cable 6 will produce lateral deformation, which may easily hinder the rolling of the travel roller 32. In this solution, a gap is left between the travel roller 32 and the component housing 31, allowing the travel roller 32 to move laterally relative to the component housing 31, thereby being able to adapt to the deformation of the main cable 6 to a certain extent, thereby making the rolling of the travel roller 32 smoother.

[0035] 3. The main cable 6 is approximately parabolic. To adapt to the shape of the main cable 6, the track 4 is designed in sections. Since different travel roller assemblies are located at different positions, the slopes of the tracks 4 at different positions are different. If the travel mechanism 2 and the travel roller assembly are rigidly connected, the travel roller assembly cannot adapt well to the shape of the main cable 6, and there is a possibility that some positions will be empty. Figure 5As shown, in this solution, the walking mechanism 2 and the walking roller assembly are hinged. When the walking mechanism 2 passes through the position between the two sections of the track 4, the walking roller assembly can rotate relative to the walking mechanism 2 and automatically adapt to the angle according to the slope of the track 4. Then the walking mechanism 2 gradually adjusts the angle in the subsequent movement, thereby avoiding the shaking of the walking mechanism 2 due to the sudden change of the slope, ensuring the construction safety. For the convenience of display, Figure 5 The change in slope between the two sections of track 4 is magnified in the figure to show how the walking roller assembly adapts to the change in slope by rotating.

[0036] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A mobile crane traveling device based on the main cable of a suspension bridge, characterized in that: It comprises a track and a running mechanism. The lower end of the running mechanism is hinged with at least two running roller assemblies. The running roller assemblies can move on the track. The track is made of rigid material and is arranged on the main cable of the suspension bridge.

2. The mobile crane traveling device based on the main cable of a suspension bridge according to claim 1 is characterized in that: The travel roller assembly comprises at least two travel rollers, both ends of the travel rollers are provided with limit parts, the limit parts protrude radially relative to the cross section of the travel roller, and the width of the track is smaller than the spacing between the two limit parts.

3. The mobile crane traveling device based on the main cable of a suspension bridge according to claim 2 is characterized in that: The travel roller is a horizontally arranged cylinder with an annular cross-section. The travel roller assembly also includes an assembly shell. A rotating shaft is provided inside the assembly shell. The rotating shaft passes through the travel roller and is slidably and rotatably connected to the travel roller. A gap is left between the travel roller and the assembly shell.

4. The mobile crane traveling device based on the main cable of a suspension bridge according to claim 3 is characterized in that: A base plate is provided at the bottom of the component shell, and anti-slip ear plates are vertically provided on both sides of the base plate. Two anti-slip protrusions are provided on the inner side of the anti-slip ear plates. The track is an I-beam. The spacing between the two anti-slip protrusions is between the upper flange width and the web thickness of the I-beam. The spacing between the two anti-slip ear plates is greater than the upper flange width of the I-beam.

5. The mobile crane traveling device based on the main cable of a suspension bridge according to claim 4 is characterized in that: It also includes a traction mechanism, which includes a traction steel cable, a traction pulley and two winches. The winches are all arranged at the same fixed end of the main cable of the suspension bridge. The traction pulley is fixed on the walking mechanism. The traction steel cable passes through the traction pulley. The two ends of the traction steel cable are respectively connected to the two winches.

6. The mobile crane traveling device based on the main cable of a suspension bridge according to claim 5 is characterized in that: Damping is provided at the hinge positions of the walking mechanism and the walking roller assembly.

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