Joint hanging director supporting system

Abstract

To provide a joint hanging director supporting system capable of appropriately supporting a director to give instructions to operators of cranes.SOLUTION: A joint hanging director supporting system supports a director who gives instructions to operators of multiple cranes 21, 22 when lifting a load using the cranes 21, 22. The joint hanging director supporting system comprises a level vial 70 arranged on an upper balance for hanging a nacelle and that measures an angle of the upper balance to the horizontal, a terminal device 10 provided with a director display unit 12 allowing the director to visually recognize and a terminal main unit 11 for controlling a display state of the director display unit 12, and a wireless communication device 91 that transmits angle measurement results to the terminal main unit 11. The director display unit 12 is configured to display the measurement results of the level vial 70.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a co-lifting operator support system.

Background Art

[0002] In a wind power generation system, a nacelle housing a power generation unit is installed at the top of a tower (see, for example, Patent Document 1). Conventionally, as a method of lifting a nacelle to the top of a tower, there is a method of using a mobile crane. As such a lifting method, there is a so-called co-lifting method of lifting a nacelle using two cranes. By using two cranes, it becomes possible to perform work exceeding the capacity of a single crane. It should be noted that co-lifting work is obligatorily performed under the direct command of an operator.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, with the increase in the size of wind power generation systems, wind power generation systems with a height of 100 m or more have been developed. In such wind power generation systems, it is necessary to lift the nacelle up to an altitude of 100 m or more from the ground. However, in this case, since an operator on the ground cannot visually recognize the situation of the nacelle in the air, there is a problem that it is difficult to realize the lifting of the nacelle by co-lifting.

[0005] It should be noted that such a problem is not limited to the case of lifting a nacelle using two mobile cranes, but also occurs in the same way when lifting a load using a plurality of mobile cranes.

Means for Solving the Problems

[0006] Each aspect of the co-lifting operator support system for solving the above problems will be described. [Aspect 1] A co-lifting operator support system for assisting an operator who gives instructions to each driver of the crane when lifting a load using a plurality of mobile cranes, A level gauge disposed on the load or the sling for suspending the load, for measuring the angle of the load or the sling with respect to the horizontal; A terminal device including a display unit for the operator that can be visually recognized by the operator and a terminal main body for controlling a display mode of the display unit for the operator; A transmission unit that transmits the measurement result of the angle to the terminal main body, The display unit for the operator is configured to display the measurement result of the level gauge. Co-lifting operator support system.

[0007] According to the same configuration, the angle of the load or the sling with respect to the horizontal is measured by a level gauge disposed on the load or the sling for suspending the load, and the measurement result of the angle is transmitted to the terminal main body. Then, the measurement result of the level gauge is displayed on the display unit for the operator. Therefore, even when it is difficult for the operator to visually recognize the angle of the load or the sling with respect to the horizontal from the ground, the operator can grasp the angle. Accordingly, it is possible to appropriately assist the operator in giving instructions to each driver of the crane.

[0008] [Aspect 2] The level gauge is a digital level gauge having an angle display unit that digitally displays the angle, An angle display unit camera disposed on the load or the sling and configured to photograph the angle display unit, The transmission unit wirelessly transmits a photographed image of the angle display unit by the angle display unit camera to the terminal main body, The display unit for the operator is configured to display the photographed image of the angle display unit. The co-hoisting conductor support system according to Aspect 1.

[0009] According to this configuration, the angle display unit of the level gauge disposed on the load or the suspension scale is photographed by the camera for the angle display unit, and the photographed image of the angle display unit is transmitted to the terminal body. Then, the photographed image of the angle display unit is displayed on the display unit for the conductor. Therefore, the co-hoisting conductor support system according to Aspect 1 can be easily embodied by combining existing devices such as a camera and a wireless communication device.

[0010] [Aspect 3] When the transmission unit is a first transmission unit, each of the cranes is provided with a load meter for detecting the load acting on the crane, and includes a second transmission unit that transmits the detection result of the load meter to the terminal body, and the display unit for the conductor is configured to display the detection result of the load meter. The co-hoisting conductor support system according to Aspect 1 or Aspect 2.

[0011] According to this configuration, the load acting on each crane is detected by the load meter provided on each crane, and the detection result of the load meter is transmitted to the terminal body. Then, in addition to the measurement result of the level gauge, the detection result of the load meter is displayed on the display unit for the conductor. Therefore, after the conductor gives an instruction to each driver of the crane, the conductor can quickly and accurately grasp whether each crane is being operated as instructed by visually checking the detection result of the load meter displayed on the display unit for the conductor.

[0012] In addition, since the conductor can save the trouble of wirelessly confirming the detection result of the load meter with each driver of the crane, the work efficiency of not only the conductor but also the driver can be improved.

[0013] [Aspect 4] A load display unit for displaying the detection result of the load meter is provided on the driver's seat of each of the cranes. Each of the driver's seats is provided with a camera for the load display unit that photographs the load display unit. The second transmission unit wirelessly transmits a photographed image of the load display unit by the camera for the load display unit to the terminal main body. The display unit for the commander is configured to display a photographed image of the load display unit. The co-lifting commander support system according to Aspect 3.

[0014] According to this configuration, the load display unit provided in the driver's seat is photographed by the camera for the load display unit, and the photographed image of the load display unit is transmitted to the terminal main body. Then, the photographed image of the load display unit is displayed on the display unit for the commander. Therefore, the co-lifting commander support system according to Aspect 3 can be easily realized by combining existing devices such as cameras and wireless communication devices.

Effects of the Invention

[0015] According to the present invention, it is possible to appropriately support a commander in giving instructions to each driver of a crane.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0017] Hereinafter, with reference to the drawings, an embodiment of a co-lifting commander support system (hereinafter referred to as a support system) will be described. As shown in FIG. 1, in a wind power generation system, a nacelle 100 housing a power generation unit is installed at the top of a tower 101.

[0018] The support system uses two mobile cranes (a first crane 21 and a second crane 22) to assist a commander (both not shown in the figure) who gives instructions to the drivers of the cranes 21 and 22 when lifting the nacelle 100 housing the power generation unit.

[0019] The first crane 21 and the second crane 22 are, for example, hydraulic cranes of the 1200t class. As shown in FIGS. 1 and 2, a power generation unit (not shown in the figure) housed in the nacelle 100 is suspended by a lower balance 61, and the lower balance 61 is suspended by an upper balance 62.

[0020] The lower balance 61 has a beam 61a and a pair of slings 61b that hang down from both ends of the beam 61a and are looped around the power generation unit. The upper balance 62 has a beam 62a and a pair of slings 62b that hang down from both ends of the beam 62a and are connected to the lower balance 61.

[0021] Slings 63 and 64 that are looped around the hooks 21a and 22a of the first crane 21 and the second crane 22 are connected to both ends of the beam 62a. As shown in FIGS. 2 and 3, a level 70 for measuring the angle of the upper balance 62 with respect to the horizontal is arranged on the upper balance 62.

[0022] As shown in FIG. 3, the level 70 is a digital level having an angle display unit 71 that digitally displays the above angle. An angle display unit camera 81 for photographing the angle display unit 71 and a wireless communication device 91 are arranged on the upper balance 62. The angle display unit camera 81 and the wireless communication device 91 are connected via a communication line.

[0023] The level 70 and the angle display unit camera 81 are fixed to the upper surface of the beam 62a of the upper balance 62. As shown in FIG. 4, the wireless communication device 91 is configured to wirelessly transmit a captured image of the angle display unit 71 by the camera 81 for the angle display unit to the terminal body 11 of the terminal device 10. That is, the wireless communication device 91 functions as a first transmission unit that transmits the measurement result of the above angle to the terminal body 11.

[0024] The terminal device 10 includes a commander display unit 12 that can be visually recognized by the commander and a terminal body 11 that controls the display mode of the commander display unit 12. The terminal device 10 is arranged on the ground. Each of the cranes 21, 22 is provided with a load meter (not shown in the figure) that detects the load acting on the crane 21, 22. In each driver's seat of the cranes 21, 22, load display units 31, 32 that display the detection results of the load meter are provided.

[0025] In each driver's seat, cameras 41, 42 for the load display unit that capture the load display units 31, 32 and wireless communication devices 51, 52 are arranged. The wireless communication devices 51, 52 are configured to wirelessly transmit a captured image of the load display units 31, 32 by the cameras 41, 42 for the load display unit to the terminal body 11. That is, the wireless communication devices 51, 52 function as a second transmission unit that transmits the detection results of the load meters of the respective cranes 21, 22 to the terminal body 11.

[0026] The commander display unit 12 is configured to display a captured image of the angle display unit 71, that is, the measurement result of the level 70. Further, the commander display unit 12 is configured to display a captured image of the load display units 31, 32, that is, the detection results of the load meters of the respective cranes 21, 22.

[0027] In this embodiment, the upper weighing scale 62 corresponds to the suspension weighing scale according to the present invention, and the nacelle 100 that houses the generator corresponds to the load according to the present invention. Next, the operation and effect of this embodiment will be described.

[0028] (1) The level 70 disposed on the upper balance 62 measures the angle of the upper balance 62 with respect to the horizontal, and the measurement result of the angle is transmitted to the terminal body 11. Then, the measurement result of the level 70 is displayed on the commander display unit 12. Therefore, even when it is difficult for the commander to visually recognize the angle of the upper balance 62 with respect to the horizontal from the ground, the commander can grasp the angle. Accordingly, it is possible to appropriately assist the commander in giving instructions to the drivers of the cranes 21 and 22 respectively.

[0029] (2) The angle display unit 71 of the level 70 disposed on the upper balance 62 is photographed by the camera 81 for the angle display unit, and the photographed image of the angle display unit 71 is transmitted to the terminal body 11. Then, the photographed image of the angle display unit 71 is displayed on the commander display unit 12. Therefore, the assistance system can be easily embodied by combining existing devices such as cameras and wireless communication devices.

[0030] (3) The load meters provided on the respective cranes 21 and 22 detect the loads acting on the cranes 21 and 22, and the detection results of the load meters are transmitted to the terminal body 11. Then, in addition to the measurement result of the level 70, the detection result of the load meter is displayed on the commander display unit 12. Therefore, after the commander gives instructions to the drivers of the cranes 21 and 22 respectively, the commander can quickly and accurately grasp whether each of the cranes 21 and 22 is being operated as instructed by visually checking the detection result of the load meter displayed on the commander display unit 12.

[0031] Also, since the commander can save the trouble of wirelessly checking the detection results of the load meters with the drivers of the cranes 21 and 22 respectively, the work efficiency of not only the commander but also the drivers can be improved.

[0032] (4) The load display units 31 and 32 provided in the driver's seat are photographed by the cameras 41 and 42 for the load display units, and the photographed images of the load display units 31 and 32 are transmitted to the terminal main body 11. Then, the photographed images of the load display units 31 and 32 are displayed on the display unit 12 for the commander. Therefore, the support system can be easily realized by combining existing devices such as cameras and wireless communication devices.

[0033] <Modification Example> This embodiment can be implemented with the following modifications. This embodiment and the following modification examples can be implemented in combination with each other within a technically non - conflicting range.

[0034] · The second transmission unit is not limited to the wireless communication devices 51 and 52, and may directly transmit the photographed images of the load display units 31 and 32 by the cameras 41 and 42 for the load display units to the terminal main body 11 by wire.

[0035] · The cameras 41 and 42 for the load display units may be omitted, and the detection results of the load meters that detect the loads acting on the cranes 21 and 22 may be directly transmitted to the terminal main body 11. · The support system may not transmit the detection results of the load meters acting on each crane 21 and 22 to the terminal main body 11.

[0036] · The first transmission unit is not limited to the wireless communication device 91, and may directly transmit the photographed image of the angle display unit 71 by the camera 81 for the angle display unit to the terminal main body 11 by wire. · The camera 81 for the angle display unit may be omitted, and the measurement result of the level 70 may be directly transmitted to the terminal main body 11.

[0037] · The level 70 may be arranged on the lower balance 61. Also, the level 70 may be arranged on the nacelle 100. · The load to be co - lifted is not limited to the nacelle 100, and may be other loads other than the nacelle 100.

[0038] ·The present invention is not limited to being applied when lifting a load using two mobile cranes, and may also be applied when lifting a load using a plurality of three or more mobile cranes.

Explanation of Signs

[0039] 10…Terminal device, 11…Terminal main body, 12…Display unit for commander, 21…First crane, 21a, 22a…Hook, 22…Second crane, 31, 32…Load display unit, 41, 42…Camera for load display unit, 51, 52…Wireless communication device (second transmission unit), 61…Lower balance, 61a, 62a…Beam, 61b, 62b…Sling, 62…Upper balance (lifting balance), 63, 64…Sling, 70…Level, 71…Angle display unit, 81…Camera for angle display unit, 91…Wireless communication device (first transmission unit), 100…Nacelle (load), 101…Tower

Claims

1. A co-lifting conductor support system for assisting a conductor who gives instructions to each driver of the cranes when lifting a load using a plurality of mobile cranes, a spirit level disposed on the load or the lifting scale that lifts the load, for measuring the angle of the load or the lifting scale with respect to the horizontal; a terminal device including a display unit for the conductor that can be visually recognized by the conductor and a terminal body that controls the display mode of the display unit for the conductor; a transmission unit that transmits the measurement result of the angle to the terminal body, wherein the display unit for the conductor is configured to display the measurement result of the spirit level, a co-lifting conductor support system.

2. The spirit level is a digital spirit level having an angle display unit that digitally displays the angle, a camera for the angle display unit disposed on the load or the lifting scale, for photographing the angle display unit, the transmission unit wirelessly transmits a photographed image of the angle display unit by the camera for the angle display unit to the terminal body, wherein the display unit for the conductor is configured to display the photographed image of the angle display unit, The co-lifting conductor support system according to Claim 1.

3. When the transmission unit is a first transmission unit, each of the cranes is provided with a load meter for detecting the load acting on the crane, a second transmission unit that transmits the detection result of the load meter to the terminal body, wherein the display unit for the conductor is configured to display the detection result of the load meter, The co-lifting conductor support system according to Claim 1 or Claim 2.

4. Each driver's seat of the cranes is provided with a load display unit for displaying the detection result of the load meter, a camera for the load display unit disposed in each of the driver's seats, for photographing the load display unit, the second transmission unit wirelessly transmits a photographed image of the load display unit by the camera for the load display unit to the terminal body, wherein the display unit for the conductor is configured to display the photographed image of the load display unit, The co-lifting conductor support system according to Claim 3.

Images