JPH082875A - Automatic-aligning balance - Google Patents

Abstract

PURPOSE:To provide a device for instantaneously restoring a balance which lifts up a suspended load to be horizontal. CONSTITUTION:In the case where the structural form of a suspended load is complicated, and a suspended load, the center of gravity position of which is difficult to be specified, is lifted, when a balance 2 is inclined to the larger weight side, inclination in the direction of X-axis is firstly detected by a sensor 35 for detecting the inclination in the directions of X-axis and Y-axis and built in the balance 2. Whereupon, a driving device 15 is operated to move girders 3 of the balance 2 on the girders 4 and the sensor 35 for the direction of X-axis confirms to be horizontal. Subsequently, a Y-axis direction sensor 35 detects inclination in the direction of Y-axis, and a driving device 23 is operated to move hooks 10 built in the girders 3 along the inclination. When the Y-axis direction sensor 35 confirms to be horizontal, lock devices provided on the respective girders 3, 4 are operated, and the respective Y-axis and X-axis sensors 35 respectively again confirm that the balance 2 is restored to be horizontal to start lifting a suspended load 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for hoisting structural components of a structure such as a boiler, which is applied at the time of assembling, installing or dismantling structural components in a regular inspection. Regarding the balance.

[0002]

2. Description of the Related Art It is necessary to lift an applied load (structural component of a structure) at the time of assembling, installing or disassembling a structural component in a structure such as a boiler or in a periodic inspection. When the structure / shape of the load is complicated and the position of the center of gravity thereof is difficult to specify, the load 1 is suspended by the wires 14 on the plurality of hooks 10 on the lower surface of the balance 2 as shown in FIG.
When the hoisting load 1 is lifted from the gantry 60 on the ground by the lifting heavy machine 6 and the suspended load 1 is ground, when the inclination due to the displacement of the center of gravity occurs, the wire 14 of the balance 2 and the chain block 52 are operated. And repeat the adjustment so that the suspended load 1 becomes horizontal, and the chain block 5 of the other suspended load 1 part.
It was necessary to operate 2 to adjust the entire suspended load 1 horizontally. As described above, when the conventional suspended load 1 is hoisted, it requires a skill to horizontally adjust the suspended load 1 having a complicated structure and shape with the balance 2. Further, as a device related to this kind for carrying out fine adjustment of a horizontally suspended hoisted load 1 by a hoisting heavy machine 6 to a predetermined place, for example, JP-A-59-59
No. 52044 is mentioned.

[0003]

The above-mentioned prior art does not consider automatic alignment when suspending a load whose center of gravity of the load 1 is difficult to identify, and has the following problems. there were. (1) It is not possible to consider which direction the suspended load 1 will be tilted when it is lifted. (2) Chain block 52 for leveling the suspended load 1
Is required. (3) Perform multiple test suspensions to make the suspended load 1 horizontal,
It is also necessary to change the suspension point. (4) The suspended load 1 may be deformed by repeated test suspension. (5) It takes a long time to lift the suspended load 1 to a proper place. Therefore, an object of the present invention is to provide a balance capable of automatically aligning a suspended load. Another object of the present invention is to provide a device that instantly restores the balance horizontally while the suspended load is being lifted.

[0004]

The above objects of the present invention can be achieved by the following constitutions. That is, a plurality of suspending members for suspending a suspended load and a supporting member for suspending members for supporting the plurality of suspending members are provided, and the balance is held in a horizontal position in a suspended state. In the aligning balance, an inclination angle detecting means for detecting the inclination of the supporting member with respect to the horizontal direction by the position of the center of gravity of the suspended load hoisted by the suspending member, and the position of the individual suspending member depending on the position of the center of gravity of the suspended load suspended by the suspending member. Automatic centering provided with hanging member arrangement position changing means for changing the arrangement position and balance horizontal control means for controlling the setting position of the hanging member arrangement changing means until the tilt angle detecting means detects the horizontal position of the balance. It is a balance. In the self-aligning balance of the present invention, the suspending member arrangement position changing means may be provided with a mechanism for moving each suspending member on the supporting member.

Further, in the self-aligning balance of the present invention, the supporting member has an end portion on a side forming member forming each side of the rectangular frame and a pair of facing side forming members in the side forming member. And a slidable member capable of moving on the side constituting member, and the hanging member arrangement position changing means comprises a mechanism for moving inside the slidable member in a direction orthogonal to the sliding direction of the slidable member. The hanging member may be attached to the sliding member. It is preferable that the suspending member includes a connecting portion on the side of the hoisting machine and a connecting portion on the side of the suspended load. Also, the connecting part on the hoisting machine side or the connecting part on the hoisting side of the hanging member is a separate body, one of the connecting parts can be fixed to the supporting member, and the other connecting part can be moved in the longitudinal direction of the supporting member. It can be configured as described above.

Further, in the self-aligning balance of the present invention, the supporting member is composed of a pair of shaft-shaped members arranged in a cross shape, and the hanging member arrangement position changing means is provided for each member of the pair of shaft-shaped members. The suspension member may include an intersecting angle adjusting member that adjusts the intersecting angle of the pair of shaft-shaped members to which the ends are connected, and the suspension member may be attached to each member of the pair of shaft-shaped members. Further, in the above-mentioned self-aligning balance, the suspending member arrangement position changing means may be configured to include a mechanism for moving each suspending member on the supporting member.

The above object of the present invention is achieved by the following configurations. That is, a plurality of suspending members for suspending a suspended load and a supporting member for suspending members for supporting the plurality of suspending members are provided, and the balance is held in a horizontal position in a suspended state. In the aligning balance, a connecting member (chain block or the like) for adjusting the inclination of the supporting member with respect to the horizontal direction according to the position of the center of gravity of the load hoisted by the hanging member to adjust the supporting member to be horizontal is a hanging member. And a suspended load, and an inclination angle detection means for detecting the inclination of the support member with respect to the horizontal direction is provided on the support member depending on the position of the center of gravity of the suspended load lifted by the suspension member. Is a self-aligning balance in which a fan for finely adjusting the horizontal position of the support member is provided at opposite ends of the support member.

The above object of the present invention is achieved by the following constitution. That is, a plurality of suspending members for suspending a suspended load and a supporting member for suspending members for supporting the plurality of suspending members are provided, and the balance is held in a horizontal position in a suspended state. In the aligning balance, an inclination angle detecting means for detecting an inclination of the supporting member with respect to the horizontal direction depending on the position of the center of gravity of the suspended load hoisted by the suspending member, a connecting member connecting the suspending member and the suspending load, and the suspending member, A self-aligning balance having drive means for adjusting the length of the connecting member and a drive source for driving the drive means until the tilt angle detecting means detects the horizontal position of the balance. A hydraulic device is used as the drive source, and a hydraulic motor or the like is used as the drive means.

[0009]

The present invention is an apparatus for detecting the position of the center of gravity of a suspended load by the inclination of the balance, correcting the position of the suspension member of the balance, and instantly restoring the balance to the horizontal position. Until the balance horizontal control means detects the horizontal position of the balance, when the inclination angle detection means of the automatic alignment balance detects the inclination of the support member that changes according to the position of the center of gravity of the suspended load lifted by the suspension member, the balance horizontal control means detects the horizontal position of the balance. By controlling the operation of the hanging member placement position changing means,
Make the balance horizontal. In this way, even if the suspended load has a complicated structural shape and it is difficult to specify the position of the center of gravity, the balance is instantly restored to the horizontal position, and the centering work of the balance is significantly efficient.

[0010]

Embodiments of the present invention will be described with reference to the drawings. First Embodiment Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS. FIG. 7 shows how to suspend a suspended load 1 having a complicated structure shape and whose center of gravity is difficult to specify by the balance 2 (combination body of the garter 3 and the garter 4) of this embodiment and hoist it by the lifting heavy machine 6. It is an external view. A perspective view of the balance 2 is shown in FIG.
A plan view of the drive mechanism for the garters 3 and 4 is shown in FIG. The balance 2 has a pair of opposing hollow prisms of a frame body 7 in which prisms are assembled in a rectangular shape as a garter 4, both ends of which are supported on the pair of opposing garters 4, and the longitudinal direction of the pair of garters 4 The garter 3 is composed of a pair of hollow prisms arranged so as to be able to travel (in the X-axis direction in FIG. 1), and the reinforcing shaft 9 connects the central portions of the pair of opposing garters 4.

The garter 3 which is a pair of hollow prisms has a female screw (not shown) having both ends inside the garter 4 (see FIG. 10).
Of the female screw 39), and the female screw 39 can be slid on the garter 4 by the movement of the female screw. Therefore, the pair of hollow prismatic garters 3 can be translated in the longitudinal direction of the garter 4 of FIG. 1, respectively. In addition, the pair of garters 3 has two built-in hooks 10 that can move in the longitudinal direction (Y-axis direction in FIG. 1).
Has a portion projecting to the outside through slits 11 provided above and below the garter 3, and the wire 1
3, 14 (FIG. 7) can be connected. That is,
The suspended load 1 is hoisted via a wire 14 (FIG. 7) provided at the lower end of the hook 10. Also, the hook 10
The upper end of is connected to the lifting heavy machine 6 (FIG. 7) via a wire 13.

FIG. 2 shows a layout of the drive mechanism inside each garter 3, 4. The driving of the garter 3 by the garter 4 is performed as follows. First, the drive device 15 on the shaft 9
Rotates a gear 18 via a belt 17 as shown in FIG. 3, and a bevel gear 19 connected to the gear 18 (FIG. 2).
To rotate. A bevel gear 21 meshing with the bevel gear 19 and its rotating shaft 22 are provided inside the garter 4 in the longitudinal direction thereof. A spiral screw is formed on the surface of the rotary shaft 22 in the gutter 4, and the gutter 3 is attached to the screw.
Since female screws (not shown) of the connecting members at both ends of the gutter 3 are screwed together, the rotation of the rotary shaft 22 moves the garter 3 (see FIG. 10). Further, the movement of the hooks 10 provided in the garter 3 by twos is performed by the four driving devices 23 on the central portion of the shaft 9. Each of the driving devices 23 rotates a spline 25 via a belt 24, and two splines 25 are provided so as to penetrate a side wall of each garter 3, and both ends of the spline 25 include a rectangular frame 7 and a shaft 9. Not supported by bearings. And the spline 25
The bevel gear 2 is inside the gutter 3 which penetrates the side wall of the gutter 3.
6 is provided, and the bevel gear 2 meshes with the bevel gear 26.
7 is provided in the longitudinal direction of the garter 3. Further, the bevel gear 27 in the garter 3 is connected to a rotary shaft 28 provided on its surface with a spiral screw arranged in the longitudinal direction of the garter 3. Further, since the rotary shaft 28 is meshed with a female screw 30 (see FIG. 4) integrated with the hook 10, the drive device 23 drives the hook 10 to move along the longitudinal direction of the garter 3. A part of the hook 10 is pulled out in a window shape, and a two-part female screw 30 is inserted into this part. The two-part female screw 30 is fixed with a bolt (not shown). To do.

Therefore, the hook 10 can be moved in the X-axis direction and the Y-axis direction (FIG. 1) of the balance 2 by the movement of the garter 3 on the garter 4 and the movement of the hook 10 itself in the longitudinal direction of the garter 3. As shown in FIG. 7, the suspended load 1 is easily kept in the horizontal position by the heavy lifting machine 6 via the wires 13 and 14 attached to the hook 10. When the suspended load 1 is set in the horizontal position, the drive lock device 2 shown in FIG.
9 acts to lock the hook 10 in place. As shown in the perspective view of the hook 10 portion of the garter 3 shown in FIG. 4, the drive lock device 29 is provided between the outer periphery of the side recess of the hook 10 provided in the space inside the garter 3 and the inner surface of the side wall of the garter 3. As shown in the conceptual diagram of the drive lock device 29 of FIG. 5, which can be inserted between the pair of shoes 31 and the pair of shoes 31, it comprises a taper shaft 33 which can move forward and backward in the cylinder 34, and can move forward and backward in the cylinder 34. The movement of the hook 10 is locked by the taper shaft 33 advancing between the pair of shoes 31. In FIG. 4, the hook 10
The internal screw 30 integrated with the rotary shaft 28 having a spiral screw on the surface is arranged over the longitudinal direction of the garter 3.
Are in mesh with each other. A locking device for locking the drive of the garter 3 similar to that shown in FIGS. 4 and 5 is also provided in the garter 4.

As shown in FIG. 1, a tilt angle detecting sensor 35 with an antenna 36 for detecting tilts of the balance 2 in the X-axis direction and the Y-axis direction is provided on the shaft 9 at the center of the garter 4.
(Kowa Co., Ltd., embedded tilt sensor GIC series or Japan Aviation Electronics Industry, Ltd., servo tilt angle sensor MC100 type) and a drive device 23 of the hook 10 which is driven and controlled by a detection value of the sensor 35. Power supply for a series of devices 3
7 are arranged. FIG. 6 shows an X-axis tilt angle detection sensor 35a, a Y-axis tilt angle detection sensor 35b and the sensor 35.
Automatic alignment balance garter 3 based on the detection signals of a and 35b,
4 shows a relationship diagram of a remote controller (control device) 38 that controls the drive devices 15 and 23 that drive the drive unit 4. Mt in the figure represents the motor of the drive units 15 and 23. When the X-axis tilt angle detection sensor 35a detects the tilt in the X-axis direction,
The drive device 15 starts driving in response to a command from the remote controller 38, and moves the Y-axis self-aligning balance top gutter 3 to a position where the suspended load 1 (FIG. 7) becomes horizontal in the X-axis direction. Then, Y
When the tilt in the Y-axis direction is detected by the shaft tilt angle detection sensor 35b, the drive device 23 of the lower garter 4 starts driving in response to a command from the remote controller 38 and the suspended load 1 (FIG. 7) in the Y-axis direction.
When the X and Y axis tilt angle detection sensors 35a and 35b detect that the balance 2 is restored in parallel, the hooks 10 are moved to a position where the hook 10 is in a horizontal state, and the driving devices 15 and 23 are locked respectively, and the hooks 10 of the hook 10 are locked. Movement stops.

Embodiment 2 FIGS. 8, 9 and 10 show the essential parts of a second embodiment of the present invention. FIG. 8 shows a perspective view of the balance, and FIG. 10 shows a perspective view for explaining a part of the internal structure of the garter 4 and an interlocking mechanism of the garter 4 and the garter 3. Further, FIG. 9 shows a sectional view taken along the longitudinal direction of the garter 4. A drive device 1 for moving the garter 3 onto the garter 4 as shown in FIGS. 9 and 10.
5 is different from the first embodiment. A drive device 15 for driving the female screw 39 connected to the end of the garter 3 is provided on the garter 4. Inside the garter 4, a female screw 39 integrally provided on a plate member 44 connected to an end portion of the bottom of the garter 3 is engaged with the female screw 39,
Further, a rotary shaft 40 having a screw groove formed on the surface of the garter 4 which penetrates the female screw 39 and is arranged in the longitudinal direction is supported at its both ends by bearings 41 (FIG. 9). The female screw 39 is a replaceable member that is divided into two, like the female screw 30 described in FIG. One end of the rotating shaft 40 extends from the bearing 41 (see the bearing 4 in FIG. 10).
1 is omitted), and a gear 42 is provided at the end thereof, and the gear 42 is provided on the garter 4 via the belt 43.
It is configured to interlock with 5. Therefore, the rotating shaft 40 is rotated by the driving force of the driving device 15, and the gutter 3 can be moved in the longitudinal direction of the gutter 4 via the female screw 39.

The hook 10 engages with a rotary shaft 28 having a screw groove arranged in the garter 3 along the longitudinal direction of the garter 3 via a female screw 39 which is insertable into and removable from the hook 10. Therefore, the rotating shaft 28 moves on the garter 3 by the same mechanism as in the first embodiment. That is, a drive device (not shown) similar to the drive device 23 on the shaft 9 in FIGS. 1 and 2 can rotate the rotary shaft 28 to move the hook 10 on the garter 3. Further, similarly to the first embodiment, on the shaft 9 (FIG. 8) at the center of the garter 4, a tilt angle detection sensor 35 for detecting tilts of the balance in the X-axis direction and the Y-axis direction, and a detection value of the sensor 35. The drive device 23 of the hook 10 and the power supply 37 of a series of devices, which are driven and controlled by the antenna 36, are arranged. Therefore, the hook 10 can be moved in the X-axis direction and the Y-axis direction of the balance by moving the garter 3 on the garter 4 and moving the hook 10 itself in the longitudinal direction of the garter 3, as in the case shown in FIG. Although not shown, the suspended load is easily kept in the horizontal position by the lifting heavy machine through the wire attached to the hook 10. When the suspended load is set in the horizontal position, the drive lock device 29 (FIG. 9) in the garter 3 operates and the hook 1
Fixing 0 at that position is the same as in the first embodiment. In each of the above embodiments, the hook 10 is the heavy lifting machine 6 (see FIG. 7).
There is an upper part of the hook 10 connected to the side of the hook 10 via a wire 13 and a lower part of the hook 10 connected via a wire 14 of the suspended load 1 for lifting.
It is also possible to fix one of the upper and lower parts to the wall surface of the garter 3 and make the other hook part movable.

Embodiment 3 In the third embodiment of the present invention shown in FIG. 11, a part of the internal structure of the garter 4 and the interlocking mechanism of the garter 4 and the garter 3 are the same as those of the embodiment shown in FIG. The description is omitted. In the present embodiment, the hook 10a connected to the hoisting heavy machine 6 (see FIG. 7) through the wire 13 has a mechanism capable of moving inside the garter 3, but the suspended load 1 (see FIG. 7).
The hook 10b connected via a wire 14 for hoisting is attached to the garter 4 and a shaft 61 arranged in the frame 7 in parallel with the garter 4 in a fixed state.

Embodiment 4 FIG. 12 shows a fourth embodiment of the present invention. In this case, the crossing angle adjustment cylinder 51 adjusts the crossing angle between the garters 50 attached in a cross shape, and when the tilt angle detecting sensor 35 and the sensor of the device having the power source detect the horizontal position, The intersecting angle is locked by a lock device (not shown) at a position, the intersecting angle of the garter 50 is fixed, and a suspended load (not shown) suspended via the hook 10 is held in a horizontal position. Fifth Embodiment FIG. 13 shows a fifth embodiment of the present invention. In this embodiment,
The level of the suspended load 1 to be suspended by the balance 2 is adjusted by a method using a chain block 52 which has been generally used in the past. However, the suspended load 1 suspended horizontally can be moved to a predetermined place by a heavy machine. For carrying and fine adjustment, installation is performed by changing the direction and position of the suspended load 1 by using the rotational propulsion force of the two fans 53 installed at both ends of the balance 2 and the inclination angle detection value of the inclination angle detection sensor 35. This makes it easier to install and has the effect of shortening the installation time at high places. Sixth Embodiment In the embodiment shown in FIG. 14, an inclination angle detection sensor 35 is arranged on the suspended load 1, and a hydraulic drive device 56 on the balance 2 is operated via a hydraulic hose 54 on the basis of a signal from the inclination angle detection sensor 35. It is configured to drive and control the hydraulic motor of the hydraulic motor block 55. In this way, the length of the wire 14 for suspending the suspended load 1 is adjusted to keep the suspended load 1 and the balance 2 in a horizontal state. The tilt angle detection sensor 35 may be arranged on the balance 2. In any of the above embodiments, the drive of the drive device is controlled by the remote controller 38 (FIG. 6) by detecting the inclination angle of the sensor 35.

[0019]

As described above, according to the present invention, the load position of the balance can be detected by the inclination of the balance, and the load position of the balance can be automatically adjusted to restore the horizontal position. It is not necessary to repeat the trial suspension for leveling the balance and the repeated operation of the chain block, which was performed at the time of frying.
Since it does not tilt, safety can be significantly improved. In addition, it can be expected to be utilized on the other side such as receiving goods in a factory, assembling in the manufacturing process, shipping, draining, and installing.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an automatic centering balance according to a first embodiment of the present invention.

FIG. 2 is a plan view for explaining a garter and hook driving mechanism of the self-aligning balance according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a hook drive device in the garter of the self-aligning balance according to the first embodiment of the present invention.

FIG. 4 is a perspective view of the garter of the self-aligning balance according to the first embodiment of the present invention.

FIG. 5 is a conceptual diagram of a drive lock device of the self-aligning balance according to the first embodiment of the present invention.

FIG. 6 is a conceptual diagram of remote control of the automatic alignment balance according to the first embodiment of the present invention.

FIG. 7 is a diagram showing a procedure for hoisting a load having a complicated structural shape and whose center of gravity position is difficult to specify according to the first embodiment of the present invention.

FIG. 8 is a schematic perspective view of an automatic centering balance according to a second embodiment of the present invention.

FIG. 9 is a partial cross-sectional view for explaining a garter and hook driving mechanism of the self-aligning balance according to the second embodiment of the present invention.

FIG. 10 is a perspective view of a drive device of another gutter on the gutter of the self-aligning balance according to the second embodiment of the present invention.

FIG. 11 is a side view of an automatic alignment balance according to a third embodiment of the present invention.

FIG. 12 is a perspective view of an automatic alignment balance according to a fourth embodiment of the present invention.

FIG. 13 is a schematic perspective view of an automatic centering balance according to a fifth embodiment of the present invention.

FIG. 14 is a side view of an automatic centering balance according to a sixth embodiment of the present invention.

FIG. 15 is a diagram showing a procedure of hoisting using a conventional balance.

[Explanation of symbols]

1 ... Hanging load, 2 ... Balance, 3 ... Upper gutter, 4 ... Lower gutter, 6
… Heavy lifting equipment, 7… Frame, 9… Reinforcing shaft, 10…
Hooks, 13, 14 ... Wires, 15, 23, 56 ... Driving devices, 17, 24, 43 ... Belts, 19, 21, 26,
27 ... Bevel gear, 29 ... Drive lock device, 30, 39 ... Female screw, 33 ... Tapered shaft, 35 ... Inclination angle detection sensor, 38 ... Remote controller, 50 ... Garter, 5
1 ... Intersection angle adjusting cylinder, 53 ... Fan, 52 ... Chain block, 55 ... Hydraulic motor block

Claims (9)

[Claims] 1. A balance comprising a plurality of hanging members for lifting a suspended load and a support member for the hanging member for supporting the plurality of suspended members, wherein the balance is placed in a horizontal position while the suspended load is suspended. In the self-aligning balance to be held, the inclination angle detection means for detecting the inclination of the supporting member with respect to the horizontal direction by the position of the center of gravity of the suspended load hoisted by the suspending member, and the position of the center of gravity of the suspended load suspended by the suspending member A hanging member arrangement position changing means for changing the arrangement position of the hanging member and a balance horizontal control means for controlling the arrangement position of the hanging member arrangement position changing means until the inclination angle detecting means detects the horizontal position of the balance are provided. A self-aligning balance that is characterized by 2. The self-aligning balance according to claim 1, wherein the suspending member arrangement position changing means includes a mechanism for moving each suspending member on the supporting member. 3. A support member is supported on both sides by a side forming member forming each side of a rectangular frame and a pair of opposing side forming members in the side forming member, with both ends supported on the side forming member. The hanging member arrangement position changing means is a mechanism for moving the inside of the sliding member in a direction orthogonal to the sliding direction of the sliding member, and the hanging member is the sliding member. The self-aligning balance according to claim 1, which is attached. 4. The hoisting member comprises a hoisting heavy machine side connecting portion and a hoisting load side connecting portion.
The self-aligning balance according to any one of 1. 5. The hoisting heavy machine side connecting portion or the hoisting load side connecting portion of the hanging member is formed as a separate body, and either connecting portion is fixed to the supporting member, and the other connecting portion is the longitudinal direction of the supporting member. 5. A structure which is movable in any direction.
The described self-aligning balance. 6. The supporting member is composed of a pair of shaft-shaped members arranged in a cross shape, and the hanging member arrangement position changing means is a pair of shaft-shaped members whose ends are connected to the respective members of the pair of shaft-shaped members. 2. The self-aligning balance according to claim 1, wherein the hanging member is attached to each member of the pair of shaft-shaped members, and the hanging member is composed of an intersecting angle adjusting member for adjusting the intersecting angle of the pair of shaft-shaped members. 7. The self-aligning balance according to claim 6, wherein the suspending member arrangement position changing means includes a mechanism for moving each suspending member on the supporting member. 8. The balance is provided with a plurality of hanging members for hoisting a suspended load and a supporting member of the hanging member for supporting the plurality of suspended members, and the balance is placed in a horizontal position in a suspended state of the suspended load. In the self-aligning balance to be held, the connecting member for adjusting the inclination of the supporting member with respect to the horizontal direction by the position of the center of gravity of the suspended load hoisted by the hanging member to adjust the supporting member to be horizontal is suspended from the hanging member. A slant angle detection means is installed on the support member that is connected between loads and detects the tilt of the support member with respect to the horizontal direction based on the position of the center of gravity of the load suspended by the suspension member. A self-aligning balance, characterized in that a fan for finely adjusting the horizontal position of the member is provided at opposite ends of the supporting member. 9. The balance is provided with a plurality of hanging members for hoisting a suspended load and a supporting member of the hanging member for supporting the plurality of suspended members, and the balance is placed in a horizontal position with the suspended load suspended. In the self-aligning balance to be held, the inclination angle detecting means for detecting the inclination of the supporting member with respect to the horizontal direction based on the position of the center of gravity of the suspended load lifted by the suspending member, and the connecting member connecting the suspending member and the suspending load and the suspending member. Further, there is provided a drive means for adjusting the length of the connecting member, and a drive source for driving the drive means until the inclination angle detection means detects the horizontal position of the balance. Balance.