JP2024066790A - Variable suspension balance - Google Patents

Abstract

To provide a variable suspension balance capable of changing a suspension position according to the size of an object to be suspended and suspending the object to be suspended regardless of its size.SOLUTION: A variable suspension balance comprises: a first beam member 2 that has suspending pieces 6 attached to both ends, and has two slide stands 7 provided so as to be slidable along a longitudinal direction; a second beam member 3 that is arranged parallel to the first beam member, has suspending pieces attached to both ends, and has two slide stands provided so as to be slidable along the longitudinal direction; a third beam member 4 that has one end attached to one of the slide stands of the first beam member and the other end attached to one of the slide stands of the second beam member; and a fourth beam member 5 that is arranged parallel to the third beam member, has one end attached to the other side of the slide stand of the first beam member, and the other end attached to the other side of the slide stand of the second beam member.SELECTED DRAWING: Figure 1

Description

The present invention relates to an adjustable lifting scale for lifting heavy objects horizontally.

Traditionally, lifting scales have been used to sling and lift heavy objects, particularly long or oddly shaped objects. Lifting scales were often made each time to suit the size and shape of the heavy object to be lifted, and were discarded after use. Conventional lifting scales were made for each object to be lifted, so in addition to the labor hours required for the lifting work, labor and material costs for production were incurred. Another problem was that once made, they could not be modified.

Patent Document 1 describes a hanging balance in which a second balance is suspended from a first balance, multiple hanging pieces are fixed to the second balance, and multiple products are hung from the multiple hanging pieces of the second balance in order to suspend multiple products of equipment that make up a plant all at once to a building without disrupting their relative positional relationships.
The lifting balance in Patent Document 1 can lift the entire plant at once using multiple lifting pieces, but because the positions of the lifting pieces are fixed, depending on the size of the plant and the equipment that makes it up, the distance from each piece of equipment to the lifting pieces can be far, making slinging impossible.

Patent document 2 describes a hanging balance having a first rope hook portion on both ends of the main body of the hanging balance, and a second rope hook portion arranged inside the first rope hook portion so as to be movable along the main body.
The hoisting scale in Patent Document 2 allows the location where the rope is hooked to be changed depending on the size of the load being slinged, but because the main body of the hoisting scale is shaped like a single rod, it cannot be used to hoist large objects with large planar dimensions.

International Publication WO97/13716 JP 2021-113112 A

The present invention was made in consideration of the above-mentioned problems with the conventional technology, and aims to provide an adjustable lifting scale that can change the lifting position according to the size of the object to be lifted, and can lift the object regardless of its size.

The means for solving the above problems are as follows.
(1) A first beam member having two slide bases with hanging pieces attached to both ends and slidably provided along the longitudinal direction;
A second beam member arranged parallel to the first beam member, having hanging pieces attached to both ends and having two slide bases slidably provided along the longitudinal direction;
a third beam member having one end attached to one side of the slide base of the first beam member and the other end attached to one side of the slide base of the second beam member;
and a fourth beam member arranged parallel to the third beam member, one end of which is attached to the other side of the slide base of the first beam member and the other end of which is attached to the other side of the slide base of the second beam member.
In the above-mentioned means 1, by sliding the third beam member and the fourth beam member along the longitudinal direction of the first beam member and the second beam member, the distance between the third beam member and the fourth beam member can be adjusted to match the size of the object to be lifted, and the lifting position can be changed.

(2) In the above-mentioned means 1,
The sliding base of the first beam member has a base main body that surrounds the first beam member around an axis, and a base extending from the upper surface of the base main body in a direction perpendicular to the first beam member, on which the third beam member or the fourth beam member is placed and attached.
In the above-mentioned means 2, since the base extends in a direction perpendicular to the first beam member, the third beam member or the fourth beam member can be easily attached to and detached from the base.
(3) In the above means 1 or 2,
The sliding base of the second beam member has a base main body that surrounds the second beam member around an axis, and a base extending from the upper surface of the base main body in a direction perpendicular to the second beam member, on which the third beam member or the fourth beam member is placed and attached.
In the above-mentioned means 3, since the base extends in a direction perpendicular to the second beam member, the third beam member or the fourth beam member can be easily attached to and detached from the base.

(4) In any one of the above means 1 to 3,
The third beam member and the fourth beam member are provided with movable hanging pieces that surround the third beam member and the fourth beam member, respectively, around their axes and are slidably arranged along the third beam member and the fourth beam member.
In the means 4, the movable hanging pieces of the third beam member and the fourth beam member can be slid along the longitudinal direction, thereby moving the hanging pieces according to the size of the object to be lifted and changing the lifting position.

According to the present invention, the lifting position can be changed according to the size of the object to be lifted, and the object can be lifted regardless of its size. Therefore, there is no need to manufacture a lifting balance for each object to be lifted, and one lifting balance can be reused for various objects to be lifted, which reduces the manufacturing costs of the lifting balance. Another advantage is that there is no need to discard the lifting balance after use.

FIG. 2 is a perspective view of a variable-type suspension balance according to the present invention. FIG. 2 is a plan view of the variable-type suspension balance of FIG. 1 . 2A and 2B are a front view and a side view of the variable-type suspension balance of FIG. 1 . FIG. 4 is an exploded perspective view of a connection portion between the first beam member and the second beam member. FIG. FIG. 1A and 1B are a front view and a side view showing a state in which an object to be hoisted is hoisted using the variable-type hoist balance of the present invention; FIG. 11 is a front view showing another situation in which an object to be hoisted is hoisted using the variable-type hoist balance of the present invention. 13A and 13B are a plan view and a side view showing still another situation in which an object to be hoisted is hoisted using the variable-type hoist of the present invention.

An embodiment of the present invention will be described below with reference to the attached drawings.

Figure 1 shows an adjustable hanging balance (hereinafter simply called a hanging balance) 1 of the present invention. The hanging balance 1 is configured in a rectangular frame shape with a first beam member 2, a second beam member 3, a third beam member 4, and a fourth beam member 5.

The first beam member 2 is made of straight steel material such as H-shaped steel, and in this embodiment is a 150 x 150 H-shaped steel with a length of 3.2 m, but is not limited to this. Hanging pieces 6 are fixed to the top and bottom of both ends of the first beam member 2. Two slide bases 7 are provided on the first beam member 2 so that they can slide along the longitudinal direction. In addition, as shown in Figure 2, a movable hanging piece 8 is provided on the first beam member 2 between the two slide bases 7 so that it can slide along the longitudinal direction. This movable hanging piece 8 can be provided as needed, and is not necessary.

The second beam member 3 is arranged parallel to the first beam member 2. The second beam member 3, like the first beam member 2, is made of straight steel such as an H-shaped steel, and in this embodiment, it is a 150 x 150 H-shaped steel with a length of 3.2 m, but is not limited to this. Hanging pieces 6 are fixed to the top and bottom of both ends of the second beam member 3. The second beam member 3 is provided with two slide bases 7 that can slide along the longitudinal direction. In addition, like the first beam member 2, the second beam member 3 is provided with a movable hanging piece 8 between the two slide bases 7 that can slide along the longitudinal direction. This movable hanging piece 8 can be provided as needed, and is not necessary.

The third beam member 4 is disposed perpendicular to the first beam member 2 and the second beam member 3. The third beam member 4, like the first beam member 2 and the second beam member 3, is made of straight steel such as an H-shaped steel, and in the embodiment, it is a 150 x 150 H-shaped steel with a length of 5.0 m, but is not limited to this. As shown in FIG. 3, one end of the third beam member 4 is attached to one side of the slide base 7 of the first beam member 2, and the other end is attached to one side of the slide base 7 of the second beam member 3. The third beam member 4 is provided with three movable hanging pieces 8 that can slide in the longitudinal direction. The number of these movable hanging pieces 8 is arbitrary and may be determined according to the weight and shape of the object to be lifted.

The fourth beam member 5 is arranged parallel to the first beam member 2 and perpendicular to the first beam member 2 and the second beam member 3. The fourth beam member 5 is made of straight steel such as H-shaped steel, like the third beam member, and in the embodiment, it is a 150 x 150 H-shaped steel with a length of 5.0 m, but is not limited to this. As shown in Figure 3, one end of the fourth beam member 5 is attached to one side of the slide base 7 of the first beam member 2, and the other end is attached to one side of the slide base 7 of the second beam member 3. The fourth beam member 5 is provided with three movable hanging pieces 8 that can slide in the longitudinal direction. The number of these movable hanging pieces 8 is arbitrary and can be determined according to the weight and shape of the object to be lifted.

As shown in Figures 4 and 5, the slide base 7 of the first beam member 2 has a base body 7a and a base 7b. The base body 7a is formed in a box shape so as to surround the first beam member 2 around its axis. The base 7b extends from the top surface of the base body 7a in a direction perpendicular to the first beam member 2. Four bolt holes 7c are formed in the base 7b so that the first beam member 2 can be placed on and supported. A rib 7d that reinforces the base 7b is provided between the back surface of the base 7b and the side surface of the base body 7a.

As shown in Figures 4 and 6, the slide base 7 of the second beam member has the same shape as the slide base 7 of the first beam member 2, except that the extension direction of the base 7b is different from that of the base 7b of the slide base 7 of the first beam member 2. Therefore, the same reference numerals are used and the description is omitted.

The movable hanging pieces 8 provided on the first beam member 2 and the second beam member 3, and the third beam member 4 and the fourth beam member 5 are plate-shaped and have rectangular through holes 8a through which the beam members 2, 3, 4, and 5 are inserted, and circular holes 8b for attaching shackles. A backing plate 8c protruding from both sides of the hanging piece 8 is provided on the upper edge of the rectangular through hole 8a. The movable hanging piece 8 surrounds the axis of each beam member 2, 3, 4, and 5, and is provided so as to be slidable along each beam member 2, 3, 4, and 5.

Next, the operation of the hanging balance 1 according to the embodiment will be described.

As shown in FIG. 1, the third beam member 4 and the fourth beam member 5 are moved in the longitudinal direction of the first beam member 2 and the second beam member 3 to match the shape of the object to be lifted A. The slide table 7 on which the third beam member 4 and the fourth beam member 5 are placed may be fixed with a C-clamp if necessary. Next, a sling wire 10 is attached to the movable hanging pieces 8 of the third beam member 4 and the fourth beam member 5 to match the lifting position of the object to be lifted A. If necessary, the sling wire 10 can also be attached to the movable hanging pieces 8 of the first beam member 2 and the second beam member 3. A chain block 11 may be interposed between the movable hanging piece 8 and the sling wire 10 if necessary. A nylon sling may be used instead of the sling wire 10.

Next, one end of the electric chain block 12 is attached to the upper hanging pieces 6 at both ends of the first beam member 2 and the second beam member 3, and the other end of the electric chain block 12 is hooked onto the hook of the crane wire 14 via a wire rope 13. In this state, the hoist 1 is in a horizontal position.

The sling wire 10 is sling-hooked onto a designated lifting part of the frame of the object to be lifted A, and the crane wire 14 is raised to lift the object to be lifted A, which is then moved to the desired position and lowered.

Figure 7 shows the situation in which a piping unit A1 of equipment such as a hot and cold water machine, chiller, or pump is lifted using the lifting balance 1 of this embodiment and transported to the equipment body B.

The third beam member 4 and the fourth beam member 5 of the lifting balance 1 are moved via the slide table 7, and the interval between the third beam member 4 and the fourth beam member 5 is adjusted to the depth dimension of the stand of the piping unit A1, and the sling wire 10 is slinged at a predetermined position of the stand of the piping unit A1. Taking into account the center of gravity of the piping unit A1, the center of gravity of the piping unit A1 is positioned as close as possible to the middle of the first beam member 2 and the second beam member 3. Next, the movable sling pieces 8 of the third beam member 4 and the fourth beam member 5 are moved to match the hanging position of the piping unit A1, and the sling wire 10 is slinged at a predetermined position of the stand of the piping unit A1. Again, taking into account the center of gravity of the piping unit A1, the center of gravity of the piping unit A1 is positioned as close as possible to the middle of the third beam member 4 and the fourth beam member 5. In this state, the piping unit A1 is lifted. Here, the electric chain block 12 is adjusted so that the piping unit A1 is approximately horizontal. Next, the crane is operated to transport the piping unit A1 to the main equipment B, lower it into the designated position, and connect the piping unit A1 to the main equipment B.

As shown in Figure 8, if the object to be lifted A2 is longer than the hoist 1, it can be lifted using two hoists 1.

Also, as shown in Figure 9, if a heavy load C is placed on a part of the object to be lifted A2, a fifth beam member 15 can be provided between the first beam member 2 and the second beam member 3, and the heavy load C can be slinged using a sling wire 10 provided on the movable sling piece 8 of the fifth beam member 15, eliminating the inclination of the sling balance 1 and keeping it horizontal.

In the hoisting balance 1 of the above embodiment, the third beam member 4 and the fourth beam member 5 can be slid along the longitudinal direction of the first beam member 2 and the second beam member 3 to adjust the distance between the third beam member 4 and the fourth beam member 5 according to the size of the object to be lifted A, and the hoisting position can be changed, so that the object to be lifted A can be lifted regardless of its size. Therefore, there is no need to manufacture a hoisting balance 1 for each object to be lifted A, and one hoisting balance 1 can be reused for various objects to be lifted A, reducing the manufacturing costs of the hoisting balance 1. There is also no longer any need to discard the hoisting balance 1 after use.

In addition, since the base 7b of the first beam member 2 and the second beam member 3 extends in a direction perpendicular to the first beam member 2 and the second beam member 3, it is easy to attach and detach the third beam member 4 or the fourth beam member 5 to the base 7b.

Furthermore, by sliding the movable hanging pieces 8 of the third beam member 4 and the fourth beam member 5 along the longitudinal direction, the movable hanging pieces 8 can be moved to match the size of the object to be lifted A, and the lifting position can be changed.

The above-described embodiment of the present invention can be modified and changed within the scope of the invention described in the claims. For example, although H-shaped steel is used for each of the beam members 2, 3, 4, 5, and 15 in the above-described embodiment, I-shaped steel or steel pipes may also be used.

DESCRIPTION OF SYMBOLS 1... Hoisting balance 2... First beam member 3... Second beam member 4... Third beam member 5... Fourth beam member 6... Hoisting piece 7... Slide base 7a... Base body 7b... Base 7c... Bolt hole 7d... Rib 8... Movable hanging piece 8a... Through hole 8b... Hole 8c... Backing plate 10... Slinging wire 11... Chain block 12... Electric chain block 13... Wire rope 14... Crane wire 15... Fifth beam member

Claims (4)

A first beam member having two slide bases with hanging pieces attached to both ends and slidably provided along the longitudinal direction;
A second beam member arranged parallel to the first beam member, having hanging pieces attached to both ends and having two slide bases slidably provided along the longitudinal direction;
a third beam member having one end attached to one side of the slide base of the first beam member and the other end attached to one side of the slide base of the second beam member;
a fourth beam member arranged parallel to the third beam member, one end of which is attached to the other side of the slide base of the first beam member and the other end of which is attached to the other side of the slide base of the second beam member. The variable-type suspension balance according to claim 1, characterized in that the slide table of the first beam member has a table body that surrounds the first beam member around its axis, and a base that extends from the upper surface of the table body in a direction perpendicular to the first beam member and on which the third beam member or the fourth beam member is placed and attached. The variable-type suspension balance according to claim 1, characterized in that the slide table of the second beam member has a table body that surrounds the second beam member around its axis, and a base that extends from the top surface of the table body in a direction perpendicular to the second beam member and on which the third beam member or the fourth beam member is placed and attached. The variable suspension balance according to claim 1, characterized in that the third beam member and the fourth beam member are provided with movable hanging pieces that surround the third beam member and the fourth beam member, respectively, around their axes and are slidably arranged along the third beam member and the fourth beam member.

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