JP2017039562A - Lifting and slewing control device - Google Patents

Abstract

A lifting and turning control device is provided in which dust adhering to a steel frame and a cover ahead of the lifting and turning control device in a turning direction is prevented from diffusing. A rotating jig (11), blowers (2) provided at axial end portions (11a, 11b) of the rotating jig (11), hook blocks (5) supporting the axial central portion of the rotating jig (11), and the blower (2). The blower 2 blows airflow from the axial ends 11a/11b of the swivel jig 11, and the blowing direction of the airflow is along the axis of the swivel jig 11 in the vertical and horizontal directions. A lifting and turning control device 20 that is variable between a first horizontal direction orthogonal to the direction. [Selection drawing] Fig. 2

Description

  The present invention relates to a lifting and turning control device.

  For example, at sites such as nuclear accidents, the sites are contaminated with high-dose radioactivity. Therefore, in the removal / modification of facilities and survey work, slinging and deballing are performed remotely, and swiveling of suspended loads is also remote. Has been done in operation.

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

Japanese Utility Model Publication No. 5-95977

  However, in the hanging jig described in Patent Document 1, since the air flow is blown out in the horizontal direction by the fan 32, the air directly hits the radioactive dust adhering to the steel frame and the cover ahead of the swiveling direction of the hanging beam 31, There was a problem of diffusing radioactive dust.

  The present invention has been made in view of the above circumstances, and provides a lifting and turning 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.

  The lifting swivel control device according to claim 1 includes a swiveling jig and a blower provided at both axial ends of the swiveling jig, and the blower supplies air from the axial end of the swiveling jig. The flow direction of the air flow is variable between a vertical direction and a first horizontal direction perpendicular to the axial direction of the turning jig in the horizontal direction.

  In the above-described lifting and turning control device, when the turning jig is supported by a crane or the like, the air flow from the blower that generates thrust is not blown directly in the turning direction, but is also blown upward. Diffusion of dust attached to steel frames, covers, and other buildings provided in is suppressed. In addition, the thrust is easily increased or decreased and adjusted by adjusting the blowing direction of the air flow between the vertical direction and the first horizontal direction. If a couple of forces that are opposite to each other is generated so that the blowing directions of the airflows of the two blowers turn in opposite directions in the first horizontal direction, the rotation of the turning jig is canceled and the turning jig is rotated. Stop.

  In the lifting and turning control device according to claim 2, a turning duct is connected to both axial ends of the turning jig of the blower, and a blowing portion of the turning duct has a vertical direction and a first horizontal direction. It is preferable that it can be changed between.

  In the above-described lifting / swirl control device, the air flow generated by the blower is smoothly guided to a desired direction between the vertical direction and the first horizontal direction by the swirl duct, and from the opening of the swirl duct to the desired direction. Blown out.

  It is preferable that the lifting and turning control device according to claim 3 further includes a remote control unit capable of remotely controlling the blowing direction of the air flow.

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

  ADVANTAGE OF THE INVENTION According to this invention, the lifting swivel control apparatus which can prevent the spreading | diffusion of the dust adhering to the steel frame and cover of the field and its vicinity is provided.

1 is a plan view of a lifting and turning control device according to an embodiment of the present invention. 1 is a front view of a lifting and turning control device according to an embodiment of the present invention. FIG. 2 is a side view of the lifting and turning control device according to the embodiment of the present invention, and is a view when seen from the direction of arrow D6 shown in FIG. 1. It is a top view of the conventional lifting control apparatus.

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

1 to 3 are a plan view, a front view, and a side view, respectively, of a lifting and turning control device 20 of 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 lifting and turning control device 20 of the present embodiment includes a turning jig 11, a blower 2 provided at both axial ends of the turning jig 11, and the axial center of the turning jig. The hook block 5 which supports a part and the generator 3 which drives the air blower 2 are provided.

As shown in FIG. 2, the turning jig 11 is suspended by a wire 6 from a hook block 5 provided in a crane or the like (not shown) and is provided so as to be turnable with respect to the sheave block 5a. It can be supported by the central part in the axial direction (namely, arrow D1 direction) 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.
In addition, a slinging ball removing device (not shown) is provided at a predetermined location (for example, both axial ends) of the turning jig 11.

  An unillustrated suspended load (lifted object) is hung on the hook 5b. With such a configuration, even if the suspended load is in the form of a pillar, a sufficient couple for efficiently turning the lifting and turning control device 20 can be generated.

The 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 end) 11a in the arrow D1 direction of the turning jig 11, and the end (axial end) in the arrow D1 direction of the turning jig 11 is installed. ) Blower 2b is installed above 11b. The blowers 2a and 2b are supported by a support frame 14 installed above the ends 11a and 11b of the turning jig 11, respectively.
The blower 2 generates an air flow by blowing out air toward the end portion 11a side or the end portion 11b side of the turning jig 11 by the rotational movement of the impeller incorporated therein. The blowout air volume and the blowout air speed of the blower 2 can be adjusted. Two blowers 2 having the exemplified performance are connected to the end portion 11a side and the end portion 11b side of the turning jig 11, respectively.

  In the blower 2, the center side of the turning jig 11 is closed by a net-like lid portion 17. In the blower 2, a turning duct 16 is connected to the end 11 a side or the end 11 b side of the turning jig 11 (that is, the air flow blowing side). Prior to the operation of the turning jig 11, the turning duct 16 is bent upward from the end portion 11a or the end portion 11b of the turning jig 11 and opens upward. Accordingly, the air flow generated by the blower 2 in this state passes through the swirl duct 16 and is blown upward. The portion that rises in the vertical direction from the axis J16 of the swirling duct 16 is a blowout portion of the swirling duct 16.

As shown by broken lines in FIGS. 1 to 3, the blowing portion of the swivel duct 16 can be rotated around an axis line J <b> 16 parallel to the axial direction of the swivel jig 11 by a remote controller (remote operation unit) (not shown). Has been. That is, the blowing 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). The inclination angle θ (see FIG. 3) with respect to the vertical direction about the axis J16 can be adjusted. The inclination angle θ is appropriately set at an angle larger than 0 ° and smaller than 90 °.
Such a blowing direction of the air flow can be appropriately adjusted by selectively operating one or more blowers 2 among the plurality of blowers 2 provided in the turning jig 11 by remote operation of a remote controller. In addition to the function of adjusting the air flow blowing direction, the remote controller has an operation stop operation function of the generator 3 to be described later, other operation functions related to the lifting and turning control device 20, operation functions related to the crane, and the like.

  The generator 3 is 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 fixed to the placement surface of the placement frame 18 that is suspended from the ends 11a and 11b of the turning jig 11, respectively.

  In the lifting swivel control device 20 of the present embodiment described above, the swivel duct connected to the blower 2a by the operator selectively operating the plurality of blowers 2 from a desired location such as the ground surface portion by a remote controller. The 16 blowing parts and the blowing part of the turning duct 16 connected to the blower 2b are rotated in directions opposite to each other with respect to the respective axes J16. In this way, the blow-out portion of each of the swirling ducts 16 and 16 is adjusted between the vertical direction and the first horizontal direction, and an appropriate angle is formed in the opposite direction along the first horizontal direction around the vertical direction. Tilt with. Here, the appropriate angle is, for example, 45 ° or less. Hereinafter, the state in which the blowing portions of the two swirling ducts 16 and 16 are inclined in this manner is referred to as “a state in which they are inclined in directions opposite to each other”.

Specifically, as shown in FIG. 1, the blowing portion of the swirl duct 16 connected to the blower 2a is inclined upward in the drawing (that is, the left side when viewed from the end 11a of the swiveling jig 11 toward the center). The swirl duct 16A is obtained. On the other hand, the blowing portion of the swirling duct 16 connected to the blower 2b is inclined downward in the drawing (that is, the left side as viewed from the end 11b of the swiveling jig 11 toward the center) to form a swirling duct 16C.
As described above, when the air flow is blown from each of the swirl ducts 16A and 16C in the state where the blowing portions of the two swirl ducts 16A and 16C are inclined in opposite directions, the swivel jig 11 is caused by the reaction force of the air flow. The couple Fa is generated so as to turn right. Thereby, the operator can turn the turning jig 11 to the right.

Further, as shown in FIG. 1, the blowing portion of the swirl duct 16 connected to the blower 2a is inclined downward on the paper surface (that is, the right side when viewed from the end 11a of the swiveling jig 11 toward the center), It is set as the turning duct 16B. On the other hand, the blowing portion of the swivel 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 swivel jig 11 toward the center) to form a swirl duct 16D.
When the air flow is blown out from each of the swirl ducts 16B and 16D in the state where the blowing portions of the two swirl ducts 16B and 16D are inclined in opposite directions as described above, the swivel jig 11 is caused by the reaction force of the air flow. A couple Fb is generated that turns leftward. Thereby, the operator can turn the turning jig 11 to the left.

If the couple Fa, Fb in opposite directions is generated so that the blowing direction of the air flow from the two blowers 2a, 2b (that is, the air flow ejection portion of the blower 2) swirls in opposite directions, the turning treatment is performed. The rotation of the tool 11 is canceled and the rotation is stopped.
For example, in the above specific example, when stopping the right turn of the turning jig 11, the operator makes the blowing portions of the two turning ducts 16 </ b> A and 16 </ b> C in the same direction with respect to the axial direction of the turning jig 11. The swirl ducts 16A and 16D (or swirl ducts 16B and 16C) may be used to blow the air flow. Further, when stopping the left turn of the turning jig 11, the operator inclines the blowing portions of the two turning ducts 16B and 16D in the same direction with respect to the axial direction of the turning jig 11, and turns the turning duct 16B. , 16C (or swirling ducts 16A, 16D), and an air flow may be blown out.

According to the lifting and turning control device 20 of this embodiment, when a crane or the like is connected to the hook block 5 and the turning jig 11 is supported, the two turning ducts in a state where the operator is inclined in the opposite directions to each other. If the air flow is blown from 16, 16, the air flow that generates the couples Fa, Fb (that is, thrust) is not blown directly from the blower 2 in the turning direction (that is, the direction parallel to the horizontal direction), Blow up. Thereby, the spreading | diffusion of the dust adhering to the steel frame provided in the tip of the turning direction, a cover, other buildings, etc. can be prevented. Accordingly, it is possible to prevent suction of dust and the like of workers and passersby near the site.
Further, according to the lifting and turning control device 20 of the present embodiment, if only the rotation direction with respect to the axis J16 of the turning duct 16 is changed and the inclination angle θ with respect to the vertical direction of the airflow blowing direction is adjusted, the couple Fa , 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 and reverse rotation as in the conventional case, and an increase in the load on the generator 3 can be suppressed and a large generator can be eliminated. In such a configuration, for example, a suspended load of about 35 t can be turned with an airflow of about 15 degrees and an airflow of about 350 m ³ / min.

  Further, according to the lifting and turning control device 20 of the present embodiment, the turning duct 16 is connected to each of the axial end portions 11a and 11b of the turning jig 11 of the blower 2, and the blowing portion of the turning duct 16 is vertical. Since the air flow generated by the blower 2 can be smoothly guided to the desired direction by the swirl duct 16 and can be changed from the opening of the swirl duct 16 to the desired direction. Can be blown out.

  Further, according to the lifting and turning control device 20 of the present embodiment, the operator is generated by the blower 2 by adjusting the blowing direction of the air flow generated by the blower 2 by using the remote operation unit. The direction in which the air flow is blown out can be operated safely and easily, and the turning jig can be turned in a desired direction (that is, right turn or left turn).

As mentioned above, although embodiment of this invention was described, this invention is not limited to said each embodiment, If it is in the range which does not deviate from the summary of this invention, the shape and form of the turning jig | tool 11 are originally taken. Various design changes and applications relating to the specific configurations of the blower 2, the swirl duct 16, and the generator 3 are possible.
For example, the blowing unit of the blower 2 may be directly open upward, and the blower 2 may include a tilting device that tilts between the vertical direction and the first horizontal direction.

2, 2a, 2b Blower 3, 3a, 3b Generator 5 Hook block 11 Turning jigs 11a, 11b End (end in axial direction)
16 Swing duct 20 Lifting swirl control device

Claims (3)

A swivel jig;
A blower provided at both axial ends of the turning jig;
With
The blower blows out an air flow from the axial end of the swivel jig,
The lifting and swirling control device is characterized in that the air flow blowing direction is variable between a vertical direction and a first horizontal direction orthogonal to the axial direction of the swiveling jig in the horizontal direction. A swirl duct is connected to both axial ends of the swivel jig of the blower,
The lifting and turning control device according to claim 1, wherein a blowing portion of the turning duct is variable between a vertical direction and the first horizontal direction.   The lifting control apparatus according to claim 1 or 2, further comprising a remote control unit capable of remotely controlling a blowing direction of the air flow.

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