JP2747599B2 - Position adjustment device for suspended cargo - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention finely adjusts the position of a load suspended by a crane to a predetermined position when the load is transported to a target place, and holds the state. The present invention relates to an apparatus for adjusting the position of a suspended cargo, and is mainly used for assembling a structure.

(Conventional technology) When constructing general structures such as buildings and bridges, or special structures such as suspended structures, the structural members are suspended by a crane, transported to a target location, and then suspended and installed. The work of joining to a structure is often performed.

The work of joining structural members to the existing structure involves aligning the structural members with the existing structure using auxiliary cranes, chain blocks, guide ropes, etc., and securing them together by welding or using high tension bolts. It is done by doing. In this case, if the structural member is not accurately positioned at the predetermined position in the predetermined posture, it causes inconveniences such as providing a support for joining the next structural member, reducing the strength of the joint and the entire structure, and the like. Alignment is extremely important.

However, fine adjustments to align the structural members when they are transported by crane have been performed manually by workers so far, which requires not only skill and a great deal of time, but also suspension using wire ropes or chains. Especially when the structural member is used outdoors, it swings and becomes unstable under the influence of wind, so that fine adjustment is extremely difficult and extremely dangerous. Furthermore, even if the alignment is performed, it must be maintained at the same position until the joining operation is completed. For this reason, it is necessary to continue monitoring and pay attention to the position, and correct any deviation. Therefore, the same labor as the previous position is required.

(Problems to be Solved by the Invention) The present invention is remarkable because fine adjustment for alignment is manually performed when a load such as the structural member is transported to a place for hanging by a crane. With great difficulty and danger, great care must be taken to maintain alignment,
In order to solve the above-mentioned problem of requiring labor, it has been made possible to correct the positional deviation and inclination without requiring human power, to easily perform accurate alignment, and to perform alignment. It is an object of the present invention to provide a position adjustment device that can be held in a state as it is.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a support base rotatably and reciprocally supported by a crane, and an intermediate base mounted on the support base so as to reciprocate linearly. A hanging table mounted on the intermediate table to suspend linearly reciprocable in a direction perpendicular to the reciprocating direction of the intermediate table, and a hanging table for hanging a load; a motor for rotating and reciprocating the support table; Means are provided in which a motor is provided for linearly reciprocating the suspension table, and a motor is provided for inclining the suspension table in both the reciprocating direction of itself and the intermediate table.

Here, the support table and the intermediate table are provided with upward wheels on both front and rear sides in the reciprocating direction of the intermediate table and the suspension table, respectively, and the intermediate table and the suspension table are respectively provided with downward wheels extending in their own reciprocating directions. Of rails,
The wheel is engaged with the rail to reciprocate linearly, and a prime mover that reciprocates linearly uses a cylinder to install and install between the support table and the intermediate table and between the intermediate table and the suspension table, respectively. It is preferable to adopt a configuration in which:

Further, it is preferable to use a jack for the prime mover for tilting the suspension stand. And, in order to incline the suspension base, a configuration in which the wheels on one side of the support base and the wheels on one side of the intermediate base are vertically supported by different jacks,
It is preferable to adopt either a configuration in which all the wheels of the support stand are vertically movable supported by different jacks, or a configuration in which all the wheels of the intermediate stand are vertically movable supported by separate jacks.

(Operation) When the luggage is attached to the suspension table and transported to the target place in a suspended state by a crane, the vertical position is adjusted by operating all jacks and moving the movable wheels up and down, and in the vertical direction. Adjustment of the rotational position about the vertical axis is performed by rotating the support base with the prime mover. The adjustment along the two horizontal axes in the horizontal direction orthogonal to the vertical axis is performed by linearly moving the movable intermediate table and the suspension table in the corresponding directions by the prime mover. Further, the adjustment of the tilt position about the two horizontal axes is performed by operating the required prime mover to rotate one or both of the intermediate table and the suspension table. Furthermore, by appropriately combining the above operations, the attitude and position in all directions can be finely adjusted.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a view for explaining an example of use of the position adjusting device of the present invention indicated by reference numeral 1. The structural member 3 is suspended and transported by a crane 4 installed on an existing structure 2 which has been constructed. It is about to be cantilevered to a predetermined portion of the existing structure 2. The crane 4 has a pivot 6 provided along a support 5.
A horizontal girder 7 is mounted in a cantilever manner. The horizontal girder 7 is provided with a trolley 8, and the trolley 8 is provided with the position adjusting device 1.

With reference to FIG. 2 and subsequent figures, the position adjusting device includes a support table 11 supported by a trolley 8 of a crane 4 in a suspended state so as to be rotatable reciprocally, and linearly reciprocating in a direction perpendicular to each other, which is sequentially mounted on the support table. It has a possible intermediate table 21 and a suspension table 31.

The support base 11 is connected to an x-shaped connecting frame 14 having a central portion fixed to the lower end of a support shaft 13 extending downward from the center of a disk-shaped receiving flange 12 supported by the rigid bearing 9 on the trolley 8 and a tip thereof. It is composed of two parallel beam members 15 and 15 and an auxiliary beam 16 erected between their one ends, and is arranged on a horizontal plane. Each end of the beam members 15, 15 of the support base 11 has a part protruding above the upper surface thereof, so that the wheels 17, 1
8, 19 and 20 are installed.

The intermediate base 21 is formed of a mouth-shaped frame, and the beams 15, 15 of the support base 11 are provided.
Rails 23, 23 are provided on the lower surface of the parallel first beam pieces 22, 22 overlapping above, and the wheels 17, 18, 19,
20 are engaged. As a result, the intermediate table 21 is mounted on the support table 11 so as to be able to linearly reciprocate in a direction parallel to the beam 15 and the beam 22. Also, each end of the second beam pieces 24, 24 parallel to each other and orthogonal to the first beam pieces 22, 22 has wheels 25, 26, 27, a part of which protrudes above the upper surface thereof. 28 are installed.

The suspension base 31 is also formed of a mouth-shaped frame, and the second beam piece of the intermediate base 21 is provided.
24, 24, parallel first girder pieces 32, 32 overlying
Rails 33, 33 are provided on the lower surface of the
25, 26, 27, 28 are engaged. As a result, the suspension base 31 is mounted on the intermediate base 21 so as to be able to linearly reciprocate in a direction parallel to the beam piece 24 and the girder piece 32. Further, the hanging base 31 has leg pieces 35 of equal length extending from each other at four corners for hanging a load.

Referring to FIG. 3, a prime mover 41 for rotating and reciprocating the support base 11 is constituted by a hydraulic or electric cylinder, and a cylinder cylinder 41a is rotatably connected to a mounting base 42 of the trolley 8. At the same time, the piston girder 41b is rotatably coupled to the outer peripheral surface of the receiving collar 12. When the piston girder 41b is moved forward and backward, the support shaft 13 and the support base 11 rotate and reciprocate integrally with the receiving collar 12, and the vertical axis in the vertical direction, that is, the z-axis shown in FIG.
Adjustment of the rotational position about the z-axis is performed. At this time, it goes without saying that the intermediate table 21 and the suspension table 31 also rotate and reciprocate integrally.

In order to adjust the position in two horizontal axes perpendicular to the ZZ axis in the horizontal direction, that is, in the linear direction along the XX axis and the XY axis shown in FIGS. The motors 43 and 45 for linearly reciprocating the suspension base 31 are also constituted by hydraulic or electric cylinders. The intermediate table 21 is Y
A cylinder cylinder 43 of two prime movers 43 arranged to move in the Y-axis direction and arranged in parallel with the rail 23 of the intermediate table 21;
a is rotatably coupled to the second beam piece 24, and the piston girder 43b is rotatably coupled to the auxiliary beam 16. When the piston girder 43b is simultaneously moved forward and backward by the same stroke, the intermediate table 21 moves in parallel in the YY axis direction, and the position in that direction is adjusted. The suspension base 31 is adapted to move in the XX axis direction with respect to the support base 11, and the cylinder cylinders of two prime movers 45 arranged in parallel with the rails 33.
45a is rotatably connected to a second girder 34 orthogonal to the girder 32 of the suspension base 31, and a piston girder 45b is rotatably connected to the first beam 22. Piston girder
When 45b is simultaneously moved forward and backward by the same stroke, the suspension base 31 moves in parallel in the XX axis direction, and the position in that direction is adjusted.

When cylinders are used as the prime movers 41, 43, and 45 as in the present embodiment, it is necessary to separately provide a braking mechanism and a lock mechanism for holding the support base 11, the intermediate base 21, and the suspension base 31 at predetermined positions. Therefore, the configuration is simple and advantageous as compared with the case where an electric motor or the like is used.

Next, the motor 47 for tilting the suspension base 31 in both directions of the XX axis, which is the reciprocating direction of itself, and the YY axis, which is the reciprocating direction of the intermediate table 21, is of a hydraulic type as shown in FIG. It consists of an electric jack. And the support eleventh wheel 17, 18, 19, 20 and the wheel 25, 26, 27,
Part or all of 28 is vertically movable by a motor 47. That is, referring to FIGS. 7 and 8, wheels generally designated by the reference numeral 50 are housed in a mounting box 52 and rotatably supported by a support shaft 51. A vertically extending ridge 53 formed on the outer surface of the mounting box 52 opposite to the guide groove 55 formed opposite to the end of the mounting box 52 is fitted. A casing 47a of the motor 47 is mounted and fixed on a support 56 provided on the beam member 15 and the second beam piece 24, and a receiver 47b is in contact with the bottom plate 54 of the mounting box 52, and the wheels 50 The mounting box 52 is moved up and down such that a part always projects above the upper surfaces of the beam members 15 and the second beam pieces 24.

Using a jack as the prime mover 47 as in the present embodiment,
Assuming that the suspension table 31 is inclined by moving the 50 up and down,
The wheels 17 ... 20, 25 ... 28 are always engaged with the rails 23, 33 so that they can be stably tilted. However, they are installed in appropriate places to tilt the intermediate table 21 and the suspension table 31 in a derailed state. You can do it.

Here, when all the wheels 17... 20, 25... 28 are supported by the respective prime movers 47 so as to be vertically movable like the wheels 50 in FIGS. 7 and 8, for example, in FIG. When the wheels 18 and 20 on one side are raised or lowered and the wheels 17 and 19 on the other side are lowered or raised, the intermediate table 21 and the suspension
Numeral 31 is rotated about the XX axis and tilted, and in FIG. 5, one side wheel 25, 27 is raised or lowered with the YY axis interposed therebetween, and the other side wheel 26, 28 Is lowered or raised, the suspension base 31 rotates about the YY axis and tilts. Alternatively, for example, if the wheels 17 and 18 on one side are raised or lowered while the wheels 19 and 20 on the other side are lowered or raised across the Y-Y axis in FIG. Rotates about the Y-Y axis and tilts. Or
By raising or lowering the wheels on one side sandwiching the XX axis or YY axis in FIGS. 4 and 5 at the same time, and simultaneously lowering or raising the wheels on the other side, the suspension stand 31 is moved. Can be greatly inclined.

In this way, the degree of freedom and the tiltable angle of the suspension base 31 which makes all the wheels 17 ... 20, 25 ... 28 vertically movable are increased, and the load such as the structural member 2 attached to the leg piece 35 is brought into a predetermined posture. On the other hand, there is an advantage that it can be easily corrected even if twisted, but only the wheels 17 ... 20 of the support base 11 can be moved up and down, or only the wheels 25 ... 28 of the intermediate base 21 can be moved up and down. 11, for example, wheels 17 and 19 on one side across the XX axis
Only the wheels 27 and 28 on the opposite side of the intermediate table 21 with respect to the XX axis may be vertically movable. In this case, when the vertically movable wheel 17, 19 intermediate stage 21, the hanging base 31 is inclined by rotating around the Figure 4 x ₁ -x ₁ axis table and hanging vertically moving the wheels 27, 28 31 is Figure 5 x ₂
-X Rotate around _two axes and tilt. If the wheels 19, 28 on one side of the Y-Y axis are raised or lowered and the wheels 17, 27 on the other side are lowered or raised, the suspension
Numeral 31 rotates around the YY axis and tilts. Furthermore, if the vertical movement of these wheels 17, 19, 27, 28 is appropriately selected, it is possible to correct the twist of the load with respect to the predetermined posture.

In addition to the above, the operation of tilting the suspension base 31 can be performed even in a configuration in which all the wheels 17... 20 of the support base 11 or all the wheels 25.

Further, when moving the suspension base 31 in the ZZ axis direction,
All of the wheels 17 ... 20 of the support stand 11 or the wheels 25 ... of the intermediate stand 21
It is sufficient to raise or lower all of the wheels 28 or all of the wheels of the support base 11 and the intermediate base 21 which are vertically movable at the same time.

The operating directions, strokes, and timings of the prime movers 41, 43, 45, and 47 are controlled by manually operating switches while the operator visually observes the position of the baggage. For example, in the case of the operation shown in FIG. Proximity switches are installed facing each other at appropriate positions on the joint surface between the existing structure 1 and the structural member 2, and automatic control is performed so that all of them are turned on.
Various means can be used. Further, the load can be attached and suspended by any means such as fixing to the leg piece 35 of the suspension base 31 with a pin or a bolt, or tying it with a rope. Further, the motor 41 for rotating and reciprocating the support base 11 is one cylinder, but two motors may be used, or an electric motor may be used. Furthermore, the cylinders that are the motors 43 and 45 for linearly reciprocating the intermediate table 21 and the suspension table 31 were used two by two in order to smoothly move in parallel, but may be one by one.
Needless to say, appropriate design changes can be made to achieve the object of the present invention, such as coupling with a free joint to smoothly cope with the rotational inclination of the intermediate table 21 and the suspension table 31.

(Effect of the Invention) In the present invention, an intermediate table and a suspension table which can be linearly reciprocated in a direction perpendicular to each other are sequentially placed on a support table which is rotatably reciprocally supported by a crane, and the suspension table can be tilted. Therefore, by appropriately selecting the operation direction and the operation amount of the prime mover for performing these operations, the vertical and horizontal positions of the suspension base and the front and rear positions and inclinations can be finely corrected without requiring any effort, and By adjusting the attitude and position of the direction, the luggage can be placed at the correct position. For this reason, when joining a structure to an existing structure, alignment can be easily performed, and a direction in which the prime mover is stopped to maintain an equilibrium state in which a moment that causes the load to tilt is not generated or to cancel the tilt. By applying the moment described above and maintaining the stationary state, the joining operation can be facilitated and speeded up. Further, according to the present invention, it is also possible to adjust the tilting state of the hanging stand when the load is hung and to transport the load in a stable state.

[Brief description of the drawings]

FIG. 1 is a view for explaining an example of use of a position adjusting device of the present invention,
FIG. 2 is a longitudinal sectional view showing an embodiment of the present invention, and FIG.
4, 5, and 6 are plan views of a support base, an intermediate base, and a suspension base. FIG. 7 is a longitudinal sectional view showing an embodiment of a vertically movable wheel. FIG. 8 is a plan view of FIG. 11 ... Support stand, 13 ... Support shaft, 17, 18, 19, 20 ... Wheel, 21 ... Intermediate stand, 23 ... Rail, 25, 26, 27, 28 ... Wheel, 31 ... Hanging stand , 33 …… rail, 41,43,45,47 …… motor

Claims (7)

(57) [Claims] 1. A support table rotatably reciprocally supported by a crane, an intermediate table mounted on the support table so as to reciprocate linearly, and a direction perpendicular to the reciprocating direction of the intermediate table. A suspension platform that is mounted on the intermediate platform so as to be capable of linear reciprocating motion and suspends a load, a motor that rotates and reciprocates the support platform, a prime mover that linearly reciprocates the intermediate platform and the suspension platform separately, and the suspension platform And a prime mover for tilting the vehicle in both the reciprocating direction of itself and the intermediate table. 2. The support table and the intermediate table have upward wheels on both front and rear sides in the reciprocating direction of the intermediate table and the suspension table, respectively. The apparatus for adjusting the position of a suspended transport load according to claim 1, further comprising a downward rail extending to the rail, wherein the wheel is engaged with the rail. 3. The position of the suspended transport load according to claim 1, wherein the prime mover for the linear reciprocation is a cylinder, and is installed between the support table and the intermediate table, and between the intermediate table and the suspension table. Adjustment device. 4. The apparatus according to claim 1, wherein the prime mover for tilting the suspension platform is a jack. 5. The apparatus for adjusting the position of a suspended transported load according to claim 2, wherein a wheel on one side of said support base and a wheel on one side of said intermediate base are vertically movable by respective jacks. . 6. The position adjusting device for a suspended transported load according to claim 2, wherein all the wheels of the support stand are vertically movable by respective jacks. 7. The apparatus according to claim 2, wherein all the wheels of the intermediate stand are vertically movable by respective jacks.