Low-power climbing crane

Abstract

To provide a power saving climbing crane less affected by a strong wind and capable of improving generating efficiency.SOLUTION: A power saving climbing crane comprises a raisable and lowerable guide mast 21 along a mast 20, a solar panel 30 provided on the outer face of the guide mast 21, a solar panel unit 40 with multiple solar panel louvers 41 arranged in an expandable / collapsible manner and in a possible manner to freely adjust the angle of inclination on the outer face of the mast 20 located below the guide mast 21, an expansion / contraction mechanism to switch between the expanding position and the folding position of the solar panel unit 40, an inclination angle adjusting mechanism to adjust the inclination angle of the solar panel louver 41, a regenerative brake 70 installed in a hoist 70W of suspended loads and to generate electricity during the winding-down of the suspended load, and a battery 80 connected to the solar panel 30, the solar panel unit 40, and the regenerative brake 70.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an energy-saving climbing crane.

Background Art

[0002] Generally, climbing cranes are used for the construction of high-rise buildings and the like. In order to contribute to the improvement of the global environment, it is very important to reduce the power consumption during operation and achieve energy saving.

[0003] In order to achieve energy saving, solar panels that utilize solar energy are effective. As examples showing the general technical level related to cranes equipped with solar panels, there are, for example, Patent Documents 1 and 2.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Although the solar panel disclosed in Patent Document 1 is arranged only on the upper surface of the jib in consideration of strong winds, when the jib is erected from the horizontal state, there is a problem that the wind load increases.

[0006] In addition, the solar panel disclosed in Patent Document 2 is arranged above a support member provided on the upper part of the crane body of a mobile crane, and it has been difficult to apply it to a climbing crane having a different structure from a mobile crane.

[0007] Furthermore, since the solar panels disclosed in Patent Documents 1 and 2 are all fixed in place, it is not possible to adjust the tilt angle of the solar panels to the optimal level according to the region, season, time of day, and direction, leaving room for improvement in terms of power generation efficiency.

[0008] This invention was made in view of the above-mentioned conventional problems, and aims to provide a power-saving climbing crane that is less susceptible to the effects of strong winds and can improve power generation efficiency. [Means for solving the problem]

[0009] The present invention provides a guide mast that can be raised and lowered along the mast, A solar panel is provided on the outer surface of the guide mast, A solar panel unit having multiple solar panel louvers that are deployed, foldable, and tilt angle adjustable on the outer surface of a mast located below the guide mast, An expansion / contraction mechanism that switches between an unfolded position and a folded position of the solar panel unit, A tilt angle adjustment mechanism for adjusting the tilt angle of the solar panel louvers, A regenerative brake is provided in the load hoisting device and generates electricity when the load is lowered, The aforementioned solar panel, solar panel unit, and regenerative brake are connected to a storage battery. This relates to a power-saving climbing crane equipped with [a specific feature / feature].

[0010] In the aforementioned energy-saving climbing crane, the solar panel unit is configured such that the solar panel louvers and connecting members are arranged alternately in the vertical direction and are rotatably connected around a horizontal axis. The upper end of the solar panel unit is rotatably connected to the guide mast about a horizontal axis, and the lower end of the solar panel unit is rotatably connected to a sub-guide mast located below the guide mast about a horizontal axis. The expansion and contraction mechanism comprises a winch installed on the guide mast and a wire that is extended from the winch and connected to the sub-guide mast, and can also serve as the tilt angle adjustment mechanism.

[0011] In the aforementioned energy-saving climbing crane, it is preferable that the connecting material be a mirror-like plate that reflects light and guides it to the solar panel louvers.

[0012] Furthermore, in the aforementioned energy-saving climbing crane, the solar panel unit is configured such that the solar panel louvers are arranged vertically at required pitches, suspended from the guide mast by ladder tape. The expansion and contraction mechanism comprises a winch installed on the guide mast and a wire that extends from the winch, passes through the solar panel louvers, extends downward, and is connected to a sub-guide mast located below the guide mast. The tilt angle adjustment mechanism may include a tilt rod for raising and lowering the ladder tape.

[0013] Furthermore, the power-saving climbing crane is equipped with a fixing device for fixing the sub-guide mast to the mast, The fixing device may be equipped with a fixing pin that is inserted into and removed from a bolt hole provided in the mast for raising and lowering the guide mast. [Effects of the Invention]

[0014] The energy-saving climbing crane of the present invention offers excellent advantages, such as being less susceptible to the effects of strong winds and improving power generation efficiency. [Brief explanation of the drawing]

[0015] [Figure 1] This is a perspective view showing an embodiment of the energy-saving climbing crane of the present invention, and moreover, an example of a solar panel unit in an unfolded state. [Figure 2]It is a cross-sectional view showing the solar panel unit in the unfolded state of FIG. 1. [Figure 3] It is a perspective view showing the folded state of the solar panel unit of FIG. 1. [Figure 4] It is a cross-sectional view showing the solar panel unit in the folded state of FIG. 3. [Figure 5] It is a circuit configuration diagram in an embodiment of the power-saving climbing crane of the present invention. [Figure 6] It is a perspective view showing another example of the solar panel unit in an embodiment of the power-saving climbing crane of the present invention.

Mode for Carrying Out the Invention

[0016] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0017] FIGS. 1 to 5 are embodiments of the power-saving climbing crane of the present invention.

[0018] In the case of this embodiment, as shown in FIG. 1, the climbing crane 10 is provided with a guide mast 21 that can move up and down along the mast 20. It is characterized by including a solar panel 30, a solar panel unit 40, a telescopic mechanism 50, an inclination angle adjustment mechanism 60, a regenerative brake 70, and a storage battery 80.

[0019] The solar panel 30 is provided on the outer surface of the guide mast 21.

[0020] The solar panel unit 40 has a plurality of solar panel louvers 41 that are arranged on the outer surface of the mast 20 located below the guide mast 21 so as to be deployable, foldable and adjustable inclination angle. Connecting members 42 are rotatably connected to the solar panel louvers 41 shown in Figures 1 to 4, and the solar panel louvers 41 and connecting members 42 are arranged alternately in the vertical direction. The upper end of the solar panel unit 40 (solar panel louvers 41 in the examples of Figures 2 and 4) is rotatably connected to the guide mast 21 about the horizontal axis 43, and the lower end of the solar panel unit 40 (connecting members 42 in the examples of Figures 2 and 4) is rotatably connected to a sub-guide mast 22 located below the guide mast 21 about the horizontal axis 43. However, it goes without saying that connecting members 42 may be provided at the upper end of the solar panel unit 40 and solar panel louvers 41 at the lower end.

[0021] The connecting material 42 can be a plate made of resin or metal, or a frame structure assembled into a plate shape, but it is particularly effective to use a mirror-like plate 42a that reflects light and guides it to the solar panel louvers 41.

[0022] The expansion / contraction mechanism 50 is configured to switch between a position in which the solar panel unit 40 is deployed (see Figures 1 and 2) and a position in which it is folded (see Figures 3 and 4).

[0023] The tilt angle adjustment mechanism 60 is configured to adjust the tilt angle of the solar panel louvers 41.

[0024] The expansion / contraction mechanism 50 shown in Figures 1 to 4 comprises a winch 51 installed on the guide mast 21 and a wire 52 that is unwound from the winch 51 and connected to the sub-guide mast 22, and also serves as the tilt angle adjustment mechanism 60.

[0025] The sub-guide mast 22 is fixed to the mast 20 by a fixing device 23, which includes a fixing pin 23a that is inserted into and removed from a bolt hole 24 for raising and lowering the guide mast 21 provided on the mast 20. The sub-guide mast 22 is also provided with a guide roller 25 that rolls along the outer surface of the mast 20, as shown in Figures 2 and 4.

[0026] The regenerative brake 70 is installed in a hoisting device 70W for a suspended load (not shown) and is designed to generate electricity when the suspended load is lowered.

[0027] The battery 80 is installed on the guide mast 21 and, as shown in Figure 5, is connected to the solar panel 30, the solar panel unit 40, and the regenerative brake 70. A power pack 81, consisting of a battery circuit and a power circuit, is connected to the battery 80. The power pack 81 is connected to a control panel 92 via an inverter 91 to which an AC power supply 90 is connected. From the control panel 92, electricity is supplied as needed to the crane power supply 93 and auxiliary equipment / lighting 94 (air conditioner, aircraft obstruction lights, lighting, pedestrian lights, etc.). The power pack 81 is also connected to a factory power supply 95.

[0028] Furthermore, in the case where a climbing crane 10 is installed adjacent to a building or other structure and is operated by mast climbing, where the mast 20 is extended as it climbs, one side of the mast 20 and guide mast 21 faces the structure, making it impossible to secure the sunlight necessary for power generation. Therefore, from a cost-effectiveness standpoint, it is preferable not to place solar panels 30 and solar panel units 40 on the side of the guide mast 21 and mast 20 that faces the structure, and to place solar panels 30 and solar panel units 40 on the remaining three sides.

[0029] Furthermore, in the case of floor climbing operation, where the mast 20 is repeatedly raised and lowered as the construction of a building progresses upward, there are no obstacles around the perimeter of the climbing crane 10, so sunlight can be received on all four sides of the mast 20 and guide mast 21. However, in the Northern Hemisphere, the solar panels 30 and solar panel units 40 generate the highest power when installed facing south, while the north-facing side generates the least power among the four sides. From the perspective of orientation and power generation, it is indeed effective to arrange the solar panels 30 and solar panel units 40 on the three sides that offer the best cost-effectiveness.

[0030] Next, the operation of the above embodiment will be explained.

[0031] As shown in Figures 1 and 2, when the solar panel unit 40 is deployed, the fixing pin 23a of the fixing device 23 is pulled out from the bolt hole 24, and the wire 52 is wound up with the winch 51 of the expansion / contraction mechanism 50, which also serves as the tilt angle adjustment mechanism 60. This causes the sub-guide mast 22 to rise, and the tilt angle of the solar panel louvers 41 changes in a direction that approaches horizontal.

[0032] Conversely, when the wire 52 is wound down by the winch 51 of the expansion / contraction mechanism 50, which also serves as the tilt angle adjustment mechanism 60, the sub-guide mast 22 descends, and the tilt angle of the solar panel louvers 41 changes in a direction that approaches vertical.

[0033] Incidentally, when generating power, the optimal tilt angle of the solar panel louvers 41 for each region, season, time of day, and direction can be recorded in advance, and when installing the climbing crane 10, the tilt angle of the solar panel louvers 41 can be automatically adjusted by inputting the region, season, time of day, and direction. However, the tilt angle adjustment operation of the solar panel louvers 41 may be switched from automatic to manual.

[0034] Furthermore, if a mirror-shaped plate 42a is used as the connecting material 42 of the solar panel unit 40, sunlight is reflected off the mirror-shaped plate 42a and guided to the solar panel louvers 41, which is more effective in increasing power generation efficiency.

[0035] The electricity generated by the solar panel unit 40, whose tilt angle of the solar panel louvers 41 is adjusted, and the solar panel 30 provided on the outer surface of the guide mast 21, is stored in the battery 80.

[0036] Furthermore, after adjusting the tilt angle of the solar panel louvers 41, the fixing pins 23a of the fixing device 23 are inserted into the bolt holes 24, and the sub-guide mast 22 is fixed to the mast 20. As a result, even if the wire 52 is damaged, there is no need to worry about the sub-guide mast 22 falling. In addition, the bolt holes 24 were originally provided in the mast 20 for raising and lowering the guide mast 21, and being able to reuse them eliminates the need to create new dedicated holes, which also leads to cost reduction.

[0037] On the other hand, when lowering the suspended load, electricity is generated by the regenerative brake 70 provided in the hoisting device 70W, and the electricity generated by the regenerative brake 70 is also stored in the battery 80.

[0038] The electricity stored in the battery 80 is supplied from the control panel 92 via the power pack 81 and inverter 91 to the crane power 93 and auxiliary equipment / lighting 94 (air conditioner, aircraft obstruction lights, lighting, sidewalk lights, etc.) as needed. In particular, in the event of a power outage due to a disaster, the electricity from the battery 80 can be used to operate the climbing crane 10 in a stable position, and the power pack 81 can also be used to supply electricity to the factory power supply 95, parking lots, plazas, roads, etc.

[0039] Furthermore, in strong winds, as shown in Figures 1 and 2, when the solar panel unit 40 is deployed, the fixing pin 23a of the fixing device 23 is pulled out through the bolt hole 24, and the wire 52 is wound up to its maximum extent with the winch 51 of the expansion / contraction mechanism 50, which also serves as the tilt angle adjustment mechanism 60. As shown in Figures 3 and 4, the sub-guide mast 22 rises to its upper limit position, the tilt angle of the solar panel louvers 41 and connecting members 42 becomes horizontal, and the solar panel unit 40 is folded.

[0040] This makes it possible to avoid the problem of increased wind load that occurs when the jib disclosed in Patent Document 1 is raised from a horizontal position, as described in this embodiment.

[0041] Furthermore, unlike the solar panels disclosed in Patent Documents 1 and 2, the solar panel unit 40 is not fixed in place, and the tilt angle of the solar panel louvers 41 can be adjusted according to the region, season, time of day, and direction, thereby improving power generation efficiency.

[0042] In this way, it becomes less susceptible to the effects of strong winds and power generation efficiency can be improved.

[0043] Figure 6 is a perspective view showing another example of the solar panel unit 40 in an embodiment of the energy-saving climbing crane of the present invention.

[0044] The solar panel unit 40 shown in Figure 6 has the same structure as a blind installed on a window, and is configured such that the solar panel louvers 41 are suspended from the guide mast 21 by ladder tapes 61 so that they are arranged vertically at the required pitch.

[0045] In another example of the solar panel unit 40, the expansion / contraction mechanism 50 includes a winch 51 installed on the guide mast 21 and a wire 52 that is unwound from the winch 51, passes through the solar panel louvers 41, extends downward, and is connected to a sub-guide mast 22 located below the guide mast 21. In the example shown in Figure 6, one end of the wire 52 that is wrapped around the winch 51 passes through the solar panel louvers 41 and extends downward to connect to the sub-guide mast 22, while the other end of the wire 52 is wrapped around a sheave 53 that is rotatably mounted on the guide mast 21, passes through the solar panel louvers 41 and extends downward to connect to the sub-guide mast 22.

[0046] The tilt angle adjustment mechanism 60 includes a tilt rod 62 for raising and lowering the ladder tape 61.

[0047] The tilt rod 62 comprises a rod portion 62a and a link portion 62b. The rod portion 62a is rotatably mounted on the guide mast 21 so as to extend horizontally and is rotationally driven by a drive device such as a motor (not shown). The link portion 62b is provided at both ends of the rod portion 62a so as to extend in a direction perpendicular to the axis of the rod portion 62a, and a ladder tape 61 hangs down from its tip, supporting the four corners of the solar panel louvers 41.

[0048] Although not shown in the illustration, in the other example shown in Figure 6, similar to Figures 2 and 4, the sub-guide mast 22 is provided with a fixing device 23 equipped with a fixing pin 23a that is inserted into and removed from a bolt hole 24 for raising and lowering the guide mast 21, and a guide roller 25 that rolls along the outer surface of the mast 20.

[0049] As shown in Figure 6, when the solar panel unit 40 is deployed, rotating the tilt rod 62 of the tilt angle adjustment mechanism 60 causes the ladder tapes 61 that support the four corners of the solar panel louvers 41 to move up and down, making it possible to change the tilt angle of the solar panel louvers 41 toward a direction closer to vertical or toward a direction closer to horizontal.

[0050] Furthermore, in strong winds, as shown in Figure 6, the fixing pin 23a of the fixing device 23 is pulled out from the bolt hole 24 (see Figures 2 and 4) from the deployed state of the solar panel unit 40, and the winch 51 of the expansion / contraction mechanism 50 is used to wind up the wire 52 that hangs directly from the winch 51 and the wire 52 that is unfurled from the winch 51 and wrapped around the sheave 53 and hangs down to its maximum extent. This causes the sub-guide mast 22 to rise to its upper limit position, the tilt angle of the solar panel louvers 41 becomes horizontal, and the solar panel unit 40 can be folded.

[0051] As a result, even when the solar panel unit 40 is configured as in the other example shown in Figure 6, it is possible to make it less susceptible to strong winds and improve power generation efficiency, similar to the examples shown in Figures 1 to 4.

[0052] Furthermore, the energy-saving climbing crane of the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the present invention. [Explanation of Symbols]

[0053] 10 Climbing Cranes 20 Mast 21 Guide mast 22 Subguide Mast 23 Fixation device 23a Fixing pin 24 bolt holes 25 Guide rollers 30 solar panels 40 Solar Panel Units 41 Solar Panel Louvers 42 Connecting material 42a Mirror plate 43 Horizontal axis 50. Expanding and contracting mechanism 51 Winch 52 wires 53 Sieve 60 Tilt angle adjustment mechanism 61 Ladder Tape 62 Tilt Rod 62a Rod section 62b Link section 70 Regenerative Brake 70W hoisting device 80 Battery 81 Power Pack 90 AC power supply 91 Inverter 92 Control Panel 93 Crane Power 94 Auxiliary equipment / lights 95 Factory Power Supply

Claims

1. A guide mast that can be raised and lowered along the mast, A solar panel is provided on the outer surface of the guide mast, A solar panel unit having multiple solar panel louvers that are deployed and foldable and have adjustable tilt angles, and are arranged on the outer surface of a mast located below the guide mast, An expansion / contraction mechanism that switches between an unfolded position and a folded position of the solar panel unit, A tilt angle adjustment mechanism for adjusting the tilt angle of the solar panel louvers, A regenerative brake is provided in the load hoisting device and generates electricity when the load is lowered, The aforementioned solar panel, solar panel unit, and regenerative brake are connected to a storage battery. A power-saving climbing crane equipped with [feature name / feature].

2. The solar panel unit is configured such that the solar panel louvers and connecting members are arranged alternately in the vertical direction and are rotatably connected around a horizontal axis. The upper end of the solar panel unit is rotatably connected to the guide mast about a horizontal axis, and the lower end of the solar panel unit is rotatably connected to a sub-guide mast located below the guide mast about a horizontal axis. The power-saving climbing crane according to claim 1, wherein the expansion and contraction mechanism comprises a winch installed on the guide mast and a wire unwound from the winch and connected to the sub-guide mast, and also serves as the tilt angle adjustment mechanism.

3. The energy-saving climbing crane according to claim 2, wherein the connecting material is a mirror-like plate that reflects light and guides it to the solar panel louvers.

4. The solar panel unit is constructed by suspending the solar panel louvers from a guide mast using ladder tapes so that they are arranged vertically at required intervals. The expansion and contraction mechanism comprises a winch installed on the guide mast and a wire that extends from the winch, passes through the solar panel louvers, extends downward, and is connected to a sub-guide mast located below the guide mast. The power-saving climbing crane according to claim 1, wherein the tilt angle adjustment mechanism is provided with a tilt rod for raising and lowering the ladder tape.

5. The sub-guide mast is equipped with a fixing device for fixing it to the mast, The power-saving climbing crane according to any one of claims 2 to 4, wherein the fixing device comprises a fixing pin that is inserted into and removed from a bolt hole for raising and lowering a guide mast provided in the mast.

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