JP5718578B2 - Steel hanger - Google Patents

Description

  The present invention relates to an apparatus used for the work of lifting and transferring a steel mold.

  Conventionally, when a steel mold such as an H-shaped steel or an I-shaped steel is lifted and transported, a hanging piece is welded to the surface of the shaped steel and a wire rope is wrapped around the hanging piece in order to prevent slippage of the shaped steel during work. It was lifted and transferred by a crane or the like (for example, FIG. 1 of Patent Document 1).

  However, in the above work, it is necessary to weld the suspension piece to the mold steel, and to cut the gas of the suspension piece after the work is completed, and it takes extra time and welding the suspension piece to the surface of the mold steel. There is a problem that the mechanical properties deteriorate.

JP-A-7-76486

  The problem to be solved by the present invention is that, in the case of work using the mold steel suspension device proposed in Patent Document 1, welding of the suspension piece to the mold steel and gas cutting of the suspension piece after completion of the work are necessary. In addition, the mechanical properties of the die steel are deteriorated by the welding.

The hanging apparatus for steel mold of the present invention is
In order not to spend extra time before and after the lifting work and to prevent the mechanical properties of the steel to be lifted from deteriorating,
A device that grips and lifts the shape steel from both ends with a crane,
A body with a long hole toward the center on both sides,
One end of one link is attached to the long hole on one side of the main body, and one end of the other link is attached to the long hole on the other side so as to be movable along the respective long holes. Link,
A shackle that is rotatably connected to the other end of the pair of links, and is hooked to a crane hook when the crane is lifted;
A pair of intermediate links each having one end rotatably attached to the center of the main body and the other end rotatably attached to the center of the one link and the other link,
A pair of movable arms attached to one end of each of the pair of links and freely movable along the respective long holes;
One end of the pair of intermediate links is rotatably mounted coaxially with the other end of one of the intermediate links, and an elongated hole for guiding the movement of the other end of the other intermediate link is formed on the other end. An open lever provided,
A base end is rotatably attached to one upper end of the main body, and the tip side rotates by its own weight with the base end as a fulcrum as it moves closer along the elongated hole of the main body of the movable arm when lifted by a crane, Opening adjustment that prevents the pair of movable arms from moving away from each other by being fixed in a state in which a contact plate is fitted to one end side of the main body of one of the pair of movable arms that move close to each other. Lever,
The main feature is that it has

When the crane is hooked on the shackle and lifted, the end of the pair of links of the present invention is guided by the elongated holes of the main body and moved toward the main body from both sides. Pinch. At that time, with the movement of the movable arm, the opening control lever is fixed by fitting the contact plate at one end of one of the movable arm body by its own weight Runode, the pair of movable arms even when lowering the main body It can prevent moving away.

  When the opening adjustment lever that constitutes the suspension device of the steel mold of the present invention is configured so that the contact plate that fits into one end side of the main body of one movable arm can adjust the mounting position with respect to the lever main body, By adjusting the mounting position of the contact plate with respect to the lever body in accordance with the width of the steel plate, it is possible to cope with lifting of steel plates having a plurality of widths.

  Moreover, when it is set as the structure which provided the convex hole part in the other end part side of the main body of the long hole of the open lever which comprises the hanging apparatus of the shape steel of this invention, the other end part of the other intermediate link is made into the other link. If the shaft member rotatably attached to the center portion of the shaft is inserted into the convex hole portion, the pair of links, the intermediate link, and the movable arm can be landed on the mold steel while being separated from each other.

  In addition, a damper having one end fixed at the center of the main body of the die steel suspension device of the present invention is provided, and a pair of movable arms that move closer to hold the die steel from both sides when the main body is lifted contact the other end of the damper. If the damper is compressed in this way, when it is lowered at the transfer position, the movable arm is separated from the other end of the damper by the biasing force of the damper, so that the held steel can be released naturally. That is, it is possible to prevent the unlocked lever from being locked when the angle formed between one link and the other link becomes too small after the steel mold is held from both sides when the main body is lifted.

  In the present invention, the work of lifting and transferring the mold steel can be safely performed without extra effort before and after the work and without deteriorating the mechanical properties of the steel mold that is lifted and transferred.

It is a perspective view which shows an example of the hanging apparatus of the shape steel of this invention. It is a front view of FIG. (A)-(d) is a figure explaining the lifting / transfer operation | work of the shape steel using this invention apparatus later on.

The purpose of the present invention is to avoid the extra effort before and after the work and to prevent the mechanical properties of the steel mold from being deteriorated. per plate was realized by Rukoto is fixed fitted to one end of the body of the movable arm.

Hereinafter, the present invention will be described in detail with reference to FIGS.
FIG.1 and FIG.2 is the figure which showed an example of the hanging apparatus of the shape steel of this invention.

  1 and 2, reference numeral 1 denotes a mold steel suspension device according to the present invention, which, when lifted by a crane, grips and lifts the mold steel A from both ends, and has the following configuration.

  Reference numeral 2 denotes a main body. For example, two horizontally long plate-like members 2a are fixedly formed at a predetermined interval, and long holes 2b and 2c toward the center are provided on both sides thereof. In the main body 2, one end 3aa of one link 3a is inserted into the long hole 2b on one side, and one end 3ba of the other link 3b is connected to the long hole 2c on the other side, respectively. 2c is attached so as to be movable along 2c. Reference numeral 4 denotes a shaft member for movably attaching one end portions 3aa, 3ba of the pair of links 3a, 3b along the long holes 2b, 2c of the main body 2.

  Reference numeral 5 denotes a shackle that is hooked to a crane hook when the crane is lifted, and the other end portions 3ab and 3bb of the pair of links 3a and 3b can be rotated to the shackle 5 by using a shaft member 6. It is linked to.

  Reference numerals 7 a and 7 b denote a pair of intermediate links in which one end portions 7 aa and 7 ba are rotatably attached to the central portion of the main body 2 via a shaft member 8. The other end portions 7ab and 7bb of the respective intermediate links 7a and 7b are rotatably attached to the central portions of the one link 3a and the other link 3b via shaft members 9, respectively.

  With the configuration described above, when the shackle 5 is hooked on the crane hook and lifted, the one end portions 3aa and 3ba of the pair of links 3a and 3b are guided by the elongated holes 2b and 2c of the main body 2 and moved closer to each other. Become. On the other hand, when lowered from the lifted state to the ground, the one end portions 3aa and 3ba of the pair of links 3a and 3b are guided by the long holes 2b and 2c of the main body 2 and move away.

  In the present invention, a pair of movable arms 10a and 10b are attached coaxially with the respective one end portions 3aa and 3ba of the pair of links 3a and 3b, and the long holes 2b of the one end portions 3aa and 3ba of the links 3a and 3b are attached. 2c is moved along with the contact / separation movement along 2c.

  In the example of FIGS. 1 to 3, the pair of movable arms 10 a, 10 b has a long hole 2 b formed by the shaft member 11 even at a predetermined distance from the shaft member 4 in order to ensure stability during the movement. 2c.

  Reference numeral 12 denotes an opening lever in which the other end portion 7ab of the one intermediate link 7a is coaxially connected to the shaft member 9 that is rotatably attached to the center portion of the one link 3a, and the one end portion 12a is rotatably attached. On the other end 12b side of the release lever 12, a long hole 12c for guiding the movement of the shaft member 9 for rotatably mounting the other end 7bb of the other intermediate link 7b to the center of the other link 3b is provided. A convex hole portion 12ca (see FIGS. 3C and 3D) is provided on the other end side of the main body 2 of the long hole 12c.

  Reference numeral 13 denotes an opening adjustment lever in which a base end 13 a is rotatably attached to the upper end of one end of the main body 2 via a shaft member 14. When the movable arm 10a, 10b is moved close to the opening adjustment lever 13 by the crane, the distal end side 13b rotates by its own weight with the base end 13a as a fulcrum. And by this rotation, it inserts in the one end side of the main body 2 of one movable arm 10a of the movable arms 10a, 10b that move closer.

  In the example of FIGS. 1 to 3, the opening adjustment lever 13 is configured such that the attachment position of the contact plate 13 c fitted into one end side of the main body 2 of one movable arm 10 a with respect to the lever main body 13 d can be adjusted. Shows what you did.

  As a configuration for adjusting the mounting position, in FIGS. 1 to 3, the lever main body 13d is provided with a large number of holes 13da at a predetermined pitch, while the contact plate 13c is provided with two pieces having an interval that is an integral multiple of the holes 13da. The thing provided with the mounting hole is shown. In this configuration, the mounting position can be adjusted by aligning these mounting holes with any of the holes 13da and fixing them with the bolts 13e.

  Reference numeral 15 denotes a balance weight attached to the other side of the main body 2 in order to maintain a horizontal state when the steel steel suspension device 1 of the present invention is lifted, and has the same weight as the opening adjustment lever 13. .

  By the way, in the type steel suspension device 1 of the present invention having the above-described configuration, after the type steel A is lifted, when the angle between one link 3a and the other link 3b is large (for example, 35 ° or more), it is lowered to the transfer position. The steel plate A held at the time can be released naturally. However, if the angle is too small (for example, less than 35 °), the steel plate A held by the release lever 12 in a locked state cannot be released naturally.

  Therefore, in the example of FIGS. 1 to 3, if one end of the damper 16 is fixed to the center of the main body 2 and the angle of the links 3 a and 3 b becomes too small when the main body 2 is lifted, the movable arm moves. 10 b contacts the other end of the damper 16 to compress the damper 16. In this case, when lowered to the transfer position, the movable arm 10 b is separated from the other end of the tamper 16 by the biasing force of the damper 16.

In the mold steel lifting device 1 having the above-described configuration, the lifting work of the mold steel A is performed as follows.
・ Before holding steel mold A: FIG. 3 (a)
First, in a state where the shaft member 9 is positioned in the convex hole portion 12 ca of the release lever 12, the crane hook is hooked on the shackle 5 and lifted. At this time, the contact plate 13c of the opening adjustment lever 13 before lifting is in a state of being placed on the upper surface of the movable arm 10a. Further, the position of the contact plate 13c is adjusted according to the width of the steel plate A to be lifted.

-Holding work of the shape steel A: FIG. 3 (b)
In the state described above, the main body 2 is moved to the steel mold A and is placed on the steel mold A. After landing, the release lever 12 is lifted so that the shaft member 9 positioned in the convex hole portion 12ca can move freely along the long hole 12c.

  When the shackle 5 is lifted by the crane in this state, the pair of movable arms 10a and 10b are guided and moved toward the long holes 2b and 2c of the main body 2 to hold the steel mold A from both sides. At the same time, the contact plate 13c of the opening adjustment lever 13 automatically rotates due to the gravity of the opening adjustment lever 13, and is fitted into one end side of the main body 2 of one movable arm 10a.

  As described above, in the present invention, it is not necessary for the worker to insert the release adjusting lever 13, but in order to prevent the steel plate A from falling off, it is desirable for the worker to visually check.

・ Completion and transfer of steel mold A: Fig. 3 (c)
The shackle 5 is further lifted from the state in which the mold steel A is held from both sides, and the main body 2 is lifted. Even if the main body 2 is lowered during the lifting operation, the contact plate 13c of the opening adjustment lever 13 is fixed in a state of being fitted to one end side of the main body 2 of the one movable arm 10a. 10a and 10b do not leave each other.

-Opening of steel mold A after completion of transfer: Fig. 3 (d)
When the pair of movable arms 10a and 10b, the pair of links 3a and 3b, and the pair of intermediate links 7a and 7b come close to each other by the pulling force of the shackle 5 after the lifting work is finished, the shafts are moved along the long holes 2b and 2c. The force for moving the member 9 is restrained, and the release lever 12 is locked.

  At that time, when the angle formed by the two links 3a and 3b is 35 ° or more, for example, when the operator opens the release adjusting lever 13, the release lever 12 is naturally released from the locked state (movable). Since the arms 10 a and 10 b are naturally opened), the worker positions the shaft member 9 in the convex hole portion 12 ca of the release lever 12.

  On the other hand, when the angle formed by the two links 3a and 3b is less than 35 °, for example, when the operator opens the release adjusting lever 13 and the urging force of the compressed damper 16 causes the movable arm 10b to move to the damper. The release lever 12 is released from the locked state by being separated from the other end of 16. Therefore, following this, the worker places the shaft member 9 in the convex hole portion 12 ca of the release lever 12.

  Finally, the suspension device 1 of the present invention is moved away from the mold steel A, and the operation of lifting another mold steel A is started.

  As described above, in the mold steel suspension device 1 of the present invention, the suspension piece can be reliably held and transferred according to the width of the mold steel A without welding the suspension piece to the mold steel A.

  The present invention is not limited to the above examples, and it goes without saying that the embodiments may be appropriately changed within the scope of the technical idea described in each claim.

  For example, the adjustment structure of the attachment position of the contact plate 13c with respect to the lever main body 13d may not be the structure shown in FIGS. Moreover, the structure shown in FIGS. 1 to 3 is not necessary as long as the movable arms 10a and 10b can stably move toward and away from each other.

A type steel 1 type steel suspension device 2 main body 2b one long hole 2c other long hole 3a one link 3aa one end 3ab other end 3b other link 3ba one end 3bb other end 5 shackle 7a one intermediate link 7aa One end 7ab The other end 7b The other intermediate link 7ba One end 7bb The other end 10a One movable arm 10b The other movable arm 12 Release lever 12a One end 12b The other end 12c Long hole 12ca Convex hole 13 Opening adjustment lever 13a Base end 13b Tip side 13c Contact plate 13d Lever body 13da Hole 13e Bolt 16 Damper

Claims (4)

A device that grips and lifts the shape steel from both ends with a crane,
A body with a long hole toward the center on both sides,
One end of one link is attached to the long hole on one side of the main body, and one end of the other link is attached to the long hole on the other side so as to be movable along the respective long holes. Link,
A shackle that is rotatably connected to the other end of the pair of links, and is hooked to a crane hook when the crane is lifted;
A pair of intermediate links each having one end rotatably attached to the center of the main body and the other end rotatably attached to the center of the one link and the other link,
A pair of movable arms attached to one end of each of the pair of links and freely movable along the respective long holes;
One end of the pair of intermediate links is rotatably mounted coaxially with the other end of one of the intermediate links, and an elongated hole for guiding the movement of the other end of the other intermediate link is formed on the other end. An open lever provided,
A base end is rotatably attached to one upper end of the main body, and the tip side rotates by its own weight with the base end as a fulcrum as it moves closer along the elongated hole of the main body of the movable arm when lifted by a crane, Opening adjustment that prevents the pair of movable arms from moving away from each other by being fixed in a state in which a contact plate is fitted to one end side of the main body of one of the pair of movable arms that move close to each other. Lever,
A mold steel suspension device characterized by comprising: The opening adjustment lever is
2. The die steel according to claim 1, wherein a contact plate that is fitted to one end side of the main body of the one movable arm is configured to be capable of adjusting an attachment position with respect to the lever main body. Hanging device. The release lever is
3. The steel hanger suspension device according to claim 1, wherein a convex hole portion is provided on the other end portion side of the main body of the long hole.   The suspension device for a steel pattern according to any one of claims 1 to 3, wherein a damper having one end fixed to a central portion of the main body is provided.

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