JP6534039B2 - Lifting control system - Google Patents

Description

  The present invention relates to a lift swing control device.

  For example, since the site is contaminated with high-dose radioactivity at the site such as the nuclear accident, remote removal and remodeling of the facility is carried out and removal of balls and removal of balls is performed, and turning of suspended loads is also remote It is done by operation.

Conventionally, a posture control device using a gyro is known as a device for mechanically and automatically operating an intermediate rope in order to control horizontal turning of a load (lifted object) when lifting by a crane. There is.
For example, in Patent Document 1, a posture in which fans (fans) that generate a horizontal thrust are provided at both ends of a suspension beam suspended horizontally by a crane so that the thrusts of both are in opposite directions. A lifting jig having a control function is disclosed.
FIG. 4 is a plan view showing the structure of the lifting jig. As shown in FIG. 4, in the horizontal direction, the axes of the fans 32 and 32 are orthogonal to the axis of the suspension beam (hanging jig) 31. The thrusts of both fans 32 and 32 act in the opposite direction to the suspension beam 31. For example, the flow a of the jet of the right fan 32 and the flow a of the jet of the left fan 32 become opposite. There is.

Japanese Utility Model Application Publication No. 5-95977

  However, in the case of the lifting jig described in Patent Document 1 above, since the air flow is blown out in the horizontal direction by the fan 32, the air directly strikes the radioactive dust attached to the steel frame and the cover at the tip of the swinging direction of the lifting beam 31 There was a problem that the radioactive dust was diffused.

  The present invention has been made in view of the above circumstances, and provides a lift swing control device capable of preventing the diffusion of dust such as radioactive dust adhering to a steel frame or a cover in the vicinity of the site or the site.

  The lift swing control apparatus according to claim 1 includes a swing jig and a blower provided at both axial ends of the swing jig, and the blower includes air from an axial end of the swing jig. The air is blown out, and the blow-off direction of the air flow is variable between a vertical direction and a horizontal direction, and a first horizontal direction orthogonal to the axial direction of the turning jig.

  In the above lift swing control apparatus, when the swing jig is supported by a crane or the like, the air flow from the fan that generates the thrust is not directly blown out in the swing direction but is also blown upward, so the tip of the swing direction The spread of dust adhering to steel frames and covers provided in buildings, etc. is suppressed. Further, the thrust can be easily increased or decreased by adjusting the blowing direction of the air flow between the vertical direction and the first horizontal direction. If the couple of forces in opposite directions are generated so that the blowoff directions of the airflows of the two blowers turn in mutually opposite directions in the first horizontal direction, the rotation of the turning jig is canceled and the rotation of the turning jig is Stop.

  In the hoisting and swinging control device according to claim 2, pivoting ducts are connected to both axial end sides of the pivoting jig of the blower, and the blowout portion of the pivoting duct is in the vertical direction and in the first horizontal direction. It is preferable that the variables be made variable.

  In the above-described lift swing control apparatus, the air flow generated by the blower is smoothly guided by the swirl duct in the desired direction between the vertical direction and the first horizontal direction, and from the opening of the swirl duct in the desired direction Be blown out.

  Preferably, the hoisting and swinging control device according to claim 3 includes a remote control unit capable of remotely controlling the blow-off direction of the air flow.

  In the above-described lifting and swinging control device, when the operator uses the remote control unit, the blowout direction of the air flow from the blower is safely and easily operated, and the swinging jig pivots in the desired direction.

  According to the present invention, there is provided a lifting and turning control device capable of preventing the spread of dust adhering to a steel frame and a cover in the vicinity of the site or the site.

It is a top view of a lift swing control device concerning one embodiment of the present invention. It is a front view of a lift swing control apparatus according to an embodiment of the present invention. It is a side view of the lift swing control apparatus which concerns on one Embodiment of this invention, and is a figure at the time of seeing from the arrow D6 direction shown in FIG. It is a top view of the conventional lift swing control apparatus.

  Hereinafter, a lift control apparatus according to an embodiment (hereinafter referred to as the present embodiment) of the present invention will be described with reference to FIGS. 1 to 3. The drawings used in the following description are schematic, and the ratios of length, width, and thickness, etc. are not necessarily the same as actual ones, and may be changed as appropriate.

1 to 3 are a plan view, a front view, and a side view, respectively, of the lift control device 20 according to the present embodiment. FIG. 3 is a view as seen from the direction of arrow D6 shown in FIG.
As shown in FIG. 1, the lift swing control device 20 according to the present embodiment includes a swing jig 11, a blower 2 provided at both axial ends of the swing jig 11, and an axial center of the swing jig. And a generator 3 for driving the fan 2.

As shown in FIG. 2, the turning jig 11 is suspended by a wire 6 from a hook block 5 provided by a crane or the like (not shown), and the hook is provided so as to be able to turn relative to the sheave block 5 a Support is possible at the central portion in the axial direction (ie, in the direction of arrow D1) by 5b. When supported, the turning jig 11 is mounted in a substantially horizontal posture. In addition, illustration of the hook block 5 is abbreviate | omitted in FIG.
Further, at a predetermined place (for example, both end portions in the axial direction) of the turning jig 11, a ball catching ball removing device (not shown) is provided.

  A not-shown suspended load (heavy load) is hung on the hook 5b. With such a configuration, even if the suspended load is in the form of a pillar, it is possible to generate a sufficient couple of forces for efficiently pivoting the lift pivot control device 20.

A blower 2 is provided at both axial ends of the turning jig 11. As shown in FIG. 1, the blower 2a is installed above the end (axial direction end) 11a in the arrow D1 direction of the turning jig 11, and the end (axial direction end) in the arrow D1 direction of the turning jig 11 The blower 2b is installed above the b) 11b. The fans 2a and 2b are supported by a support frame 14 installed above the end portions 11a and 11b of the turning jig 11, respectively.
The blower 2 generates an air flow by blowing air toward the end 11a side or the end 11b side of the turning jig 11 by the rotational movement of the built-in impeller. The blowout air volume of the blower 2 and the blowout wind speed are adjustable. Two fans 2 having the illustrated performance are connected to the end 11a side and the end 11b side of the turning jig 11, respectively.

  In the blower 2, the center side of the turning jig 11 is closed by a mesh lid 17. In the blower 2, a turning duct 16 is connected to the end 11 a side or the end 11 b side (that is, the blowout side of the air flow) of the turning jig 11. Before the operation of the turning jig 11, the turning duct 16 is bent upward from the end 11a or the end 11b of the turning jig 11, and is opened upward. Accordingly, the air flow generated by the blower 2 in this state is blown upward through the turning duct 16. The portion that rises in the vertical direction from the axis J 16 of the turning duct 16 is the blowout portion of the turning duct 16.

As shown by a broken line in FIGS. 1 to 3, the blowout portion of the turning duct 16 can be rotated about an axis J 16 parallel to the axial direction of the turning jig 11 by a remote controller (remote control unit) not shown. It is done. That is, the blowout direction of the air flow generated by the blower 2 is the first horizontal direction perpendicular to the axial direction of the turning jig 11 in the vertical direction and the horizontal direction (that is, the direction opposite to the arrow D2 direction and the arrow D2) (See FIG. 3) is adjustable with respect to the vertical direction centering on the axis line J16. The inclination angle θ is appropriately set to an angle larger than 0 ° and smaller than 90 °.
The blow-off direction of such an air flow can be appropriately adjusted selectively by remote control of a remote controller with respect to one or more of the plurality of fans 2 provided in the turning jig 11. The remote controller has an operation stop operation function of the generator 3 to be described later, an operation function related to the other lift swing control apparatus 20, an operation function related to a crane, and the like in addition to the adjustment function of the air flow blowout direction.

  Generators 3 are provided at both axial ends of the turning jig 11. As shown in FIG. 2, the generator 3a is installed below the end 11a of the turning jig 11 in the direction of arrow D1, and the generator 3b is installed below the end 11b of the turning jig 11 in the direction of arrow D1. ing. The generators 3a and 3b are respectively fixed to the mounting surface of the mounting frame 18 which is installed to hang from the end portions 11a and 11b of the turning jig 11.

  In the lift swing control apparatus 20 according to the present embodiment described above, the turning duct connected to the blower 2a by the operator selectively operating the plurality of blowers 2 from a desired place such as the ground surface part by the remote controller The 16 blowoffs and the blowouts of the turning duct 16 connected to the blower 2b are rotated in opposite directions with respect to the respective axes J16. In this manner, the blowouts of the respective swirling ducts 16 and 16 are adjusted between the vertical direction and the first horizontal direction, and an appropriate angle is formed along the first horizontal direction opposite to each other about the vertical direction. Tilt at. Here, the appropriate angle is, for example, 45 ° or less. Hereinafter, the state in which the blowout portions of the two swirling ducts 16 and 16 are thus inclined is referred to as "the state in which they are inclined in opposite directions to each other".

Specifically, as shown in FIG. 1, the blowout portion of the turning duct 16 connected to the blower 2a is inclined to the upper side of the drawing (that is, the left side when viewed from the end 11a of the turning jig 11 toward the center) To make a turning duct 16A. On the other hand, the blowout portion of the turning duct 16 connected to the blower 2b is inclined downward in the drawing (that is, left as viewed from the end 11b of the turning jig 11 toward the center) to form a turning duct 16C.
As described above, when the air flow is blown out from each of the turning ducts 16A and 16C in a state where the blowout parts of the two turning ducts 16A and 16C are inclined in the opposite direction to each other, the reaction force of the air flow causes the turning jig 11 A couple of forces Fa occur such that the wheel turns to the right. Thereby, the worker can turn the turning jig 11 right.

Further, as shown in FIG. 1, the blowout portion of the turning duct 16 connected to the blower 2a is inclined downward in the drawing (that is, rightward when viewed from the end 11a of the turning jig 11 toward the center) It is referred to as a turning duct 16B. On the other hand, the blowout portion of the turning duct 16 connected to the blower 2b is inclined upward in the drawing (that is, the right side when viewed from the end 11b of the turning jig 11 toward the center) to form a turning duct 16D.
As described above, when the air flow is blown out from each of the turning ducts 16B and 16D in a state where the blowout parts of the two turning ducts 16B and 16D are inclined in the opposite direction to each other, the reaction force of the air flow causes the turning jig 11 A couple of forces Fb are generated so that the wheel turns to the left. Thereby, the worker can turn the turning jig 11 to the left.

If couple forces Fa and Fb in opposite directions are generated so that the blow-off directions of the air flows from the two fans 2a and 2b (that is, the air flow ejection parts of the fan 2) turn in mutually opposite directions, the turning control is performed. The rotation of the tool 11 is canceled and the rotation stop state is established.
For example, in the above-described specific example, when stopping the right turn of the turning jig 11, the worker blows the blowout portions of the two turning ducts 16A and 16C in the same direction with respect to the axial direction of the turning jig 11. It may be inclined to form the turning ducts 16A, 16D (or turning ducts 16B, 16C) to blow out the air flow. In addition, when stopping the left turn of the turning jig 11, the operator inclines the blowout portions of the two turning ducts 16B and 16D in the same direction with respect to the axial direction of the turning jig 11 to turn the turning duct 16B. , 16C (or turning ducts 16A, 16D), and the air flow may be blown out.

According to the hoisting and swinging control device 20 of the present embodiment, when the crane or the like is connected to the hook block 5 and the swinging jig 11 is supported, two swinging ducts in which the operator is inclined in the opposite direction to each other If the air flow is blown out from 16, 16, the air flow that generates the couples Fa and Fb (that is, the thrust) does not blow out directly from the blower 2 in the turning direction (that is, the direction parallel to the horizontal direction). Blow up upwards. Thereby, it is possible to prevent the diffusion of dust adhering to the steel frame and the cover provided at the end of the turning direction, and other buildings and the like. Therefore, it is also possible to prevent the suction of dust from the workers and by the passersby near the site.
Further, according to the lift swing control device 20 of the present embodiment, the couple force Fa can be obtained by changing only the rotational direction of the swirl duct 16 with respect to the axis J16 and adjusting the inclination angle θ with respect to the vertical direction of the air flow. , Fb can be easily increased or decreased. Therefore, it is not necessary to control the operation of the plurality of blowers 2 and to perform selection switching or reverse rotation as in the prior art, and an increase in load on the generator 3 is suppressed, and it is not necessary to use a large generator. In such a configuration, for example, a suspended load of about 35 t can be turned with an air volume of about 15 degrees at an inclination angle of about 350 m ³ / min.

  In addition, according to the lift swing control apparatus 20 of the present embodiment, the swing duct 16 is connected to both axial direction end portions 11a and 11b of the swing jig 11 of the blower 2, and the blowout portion of the swing duct 16 is vertical. Since it is made variable between the direction and the first horizontal direction, the air flow generated by the blower 2 is smoothly guided to the desired direction by the turning duct 16 and the desired direction from the opening of the turning duct 16 Can be blown out.

  In addition, according to the lift swing control device 20 of the present embodiment, the blowout direction of the air flow generated by the blower 2 is adjusted by using the remote control unit, so that the worker is generated by the blower 2. The blowing direction of the air flow can be operated safely and easily, and the turning jig can be turned in the desired direction (that is, right turning or left turning).

As mentioned above, although embodiment of this invention was described, this invention is not limited to said each embodiment, As long as it does not deviate from the summary of this invention, the shape and form of the turning jig 11 are of course Various design changes and applications can be made regarding the specific configurations of the blower 2, the turning duct 16 and the generator 3.
For example, the blowing part of the air blower 2 may be opened directly upward, and the air blower 2 may be provided with the inclination apparatus which inclines between a perpendicular direction and a 1st horizontal direction.

2, 2a, 2b Blower 3, 3a, 3b Generator 5 Hook block 11 Ends of pivoting jigs 11a, 11b (axial ends)
16 Swivel duct 20 Lifting load swing control device

Claims (3)

A turning jig,
A blower provided at both axial ends of the turning jig,
Equipped with
The blower blows an air flow from an axial end of the turning jig,
The lift control device according to claim 1, wherein the blowout direction of the air flow is variable between a vertical direction and a horizontal direction and a first horizontal direction orthogonal to the axial direction of the swing jig. A turning duct is connected to both axial end sides of the turning jig of the blower,
The lift control device according to claim 1, wherein the blowout portion of the turning duct is variable between a vertical direction and the first horizontal direction.   The lift control device according to claim 1 or 2, further comprising a remote control unit capable of remotely controlling the blowout direction of the air flow.

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