JPH1087263A - Article hoisting accessory - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hoist safely in good balance any of an article of weight over a wide range, so that hoisting/ suspending work of the article can be smoothly performed. SOLUTION: A hoisting accessory is provided with a C-shaped frame 1 comprising an upper frame part 11, lower frame part 12 and a vertical frame part 13, hoisting device connecting part 2 fixed to the upper frame part 11, arm part 5 provided capable of extensibly/contractibly adjusting a protruding amount in the lower frame part 12 and a driving gear 6 for extension/contraction driving the arm part 5. A fixing position to the upper frame part 11 of the hoisting device connecting part 2, when the center of gravity of article (coil C1, C2) hoist supported to the lower frame part 12 or the arm part 5 protruded from the lower frame part 12 is arranged in almost gravitational direction downward of a hoisted support location (shaft bar 21) of the connecting part 2, is a position where a tilt of a total unit of the hoisting accessory is placed in a predetermined permissible range.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article suspender for suspending an article such as a coil wound on a metal strip.

[0002]

2. Description of the Related Art As shown in FIG. 5, upper and lower frame portions 81 and 82, which extend in parallel to each other, and which have been used for a long time, have been used for this type of article hanging device. , 82 and a vertical frame portion 83 connecting one end thereof, and a lifting device connecting portion 84 fixed to the upper frame portion 81.
Is known. The article suspending device 8 is hung and supported by a hook F which is suspended by a wire W from a ceiling traveling crane installed in a factory and moved in the horizontal and vertical directions by the lifting device connecting portion 84, for example. Moved to position. For example, when the coil 10 is lifted, the lower frame portion 82 of the frame 80 is inserted into the coil hole 101 in a state where the coil 10 is hung and supported by the hook F, and is lifted up in that state to lift the coil 10 to a desired position. Can be transported to

[0003] In order to lift an article in a well-balanced manner, several types of articles of this type are prepared in advance in which the size and the weight of each part are adjusted in accordance with the weight of the article. Can be Further, an article hanging device shown in FIG. 6 has also been proposed. The article suspending device 9 shown in FIG. 6 includes an upper frame portion 91 and a lower frame portion 92 extending in a horizontal direction in parallel with each other, and a vertical frame portion 93 connecting one end of the upper and lower frame portions 91 and 92. It is similar to the hanging device of FIG. 5 in that it has a character-shaped frame 90 and a lifting device connecting portion 94 connected to the upper frame portion 91. Depending on the weight, the position of the lifting device connecting portion 94 on the upper frame portion 91 can be adjusted,
A counter weight 95 is provided on the upper frame portion 91, and the position of the weight can be adjusted. These positions are adjusted in order to lift the articles in a balanced manner.

[0004]

However, in the case of the article hanger 8 of the type shown in FIG. 5, several types of hanger must be prepared in advance so that articles of different weights can be accommodated. This increases the cost, and requires a space for storing unused lifting gear. In addition, there is also a complication that the hanging tool must be properly used depending on the article. Further, when lifting the article, the lower frame 82
In most cases, an article is supported with its tip protruding from the article, and there is also a problem that the projecting tip collides with a surrounding object, and thus it becomes difficult to lift and drop the article.

In this respect, in the article hanging device 9 shown in FIG. 6, since the positions of the lifting device connecting portion 94 and the counterweight 95 in the upper frame portion 91 can be adjusted, even one article of various weights can be processed. Also, the lower frame 9
The article can be lifted by reducing the amount of protrusion from the second article. However, in the article hanging device 9 shown in FIG. 6, it is necessary to make the frame firmly for heavy articles so that any of the articles having a wide range of weight can be lifted and supported in a well-balanced manner. The supporting portion, that is, the vertical frame portion 93 opposite to the free end side portion of the lower frame portion 92 and the upper and lower frame portions 91 and 92 connected thereto become very heavy. Even in this state, the weight of the counterweight 95 must be increased so that a light weight can be lifted in a well-balanced manner. As a result, there is a problem that the whole becomes large and the weight becomes large. The counterweight 95 can be reduced for a relatively light weight object by lifting it at the back of the frame 9, that is, at a position close to the vertical frame portion 93, but the amount of protrusion of the lower frame portion 92 from the article becomes too large. Lifting and lifting of articles becomes difficult.

In the article hoisting tool 9 of FIG. 6, it is usual to adjust the positions of the hoisting device connecting portion 94 and the counterweight 95 in the upper frame portion 91 while the article is once hung by the lower frame portion 92. Since the article is temporarily lifted in an unbalanced state, there is a danger of dropping the article, which is dangerous. Therefore, an object of the present invention is to provide a compact article suspender capable of safely lifting articles having a wide range of weight in a well-balanced manner, and lifting the articles so that the work can be smoothly performed. I do.

[0007]

In order to solve the above-mentioned problems, the present invention relates to a vertical frame connecting an upper frame portion and a lower frame portion extending in a horizontal direction in parallel with each other, and one end of the upper and lower frame portions. C-shaped frame consisting of an upper portion, a lifting device connecting portion fixed to the upper frame portion, and a horizontal extension and contraction of the lower frame portion so that the amount of protrusion from the lower frame portion can be adjusted. An arm portion provided so as to be provided with an arm portion expansion / contraction drive device provided on the frame for driving the arm portion to expand / contract,
The fixing position of the lifting device connecting portion to the upper frame portion is substantially below the lifted supporting portion of the lifting device connecting portion in the direction of gravity, the lower frame portion, or the lower frame portion and the lower frame portion projecting therefrom. When the center of gravity of an article to be lifted and supported by an arm portion is arranged, the article is hung at a position where the inclination of the entire hanger falls within a predetermined allowable range.

According to the article suspending device of the present invention, for an article (usually a light weight article) having a small width (width in the horizontal direction in which the lower frame portion extends), the arm portion is placed in the lower frame portion, or the arm portion is placed. With the amount of protrusion from the lower frame portion reduced, the article is positioned substantially below the supported lifting portion of the lifting device connecting portion in the direction of gravity, and the inclination of the entire lifting device is adjusted in advance. The lower frame portion or the arm portion does not project from the article in a well-balanced and stable manner in a state where the lower frame portion or the arm portion is within the predetermined allowable range, and even if it does, the amount of the lower frame portion or the arm portion can be lifted and supported by a small amount. Further, for an article having a large width (usually an article having a large weight), the arm portion is projected from the lower frame portion, and the article is positioned substantially below the suspended supporting portion of the lifting device connecting portion in the direction of gravity. The arm portion does not protrude from the article in a well-balanced, stable manner, and even if it protrudes, the arm portion can be lifted and supported with a small amount.

[0009] Thus, any of a wide range of weight of the article safely and well-balanced, and the lifting of the article,
It can be lifted so that the lifting work can be performed smoothly. In order to easily position the lower frame part or the lower frame part and the tip of the arm part protruding therefrom so as not to protrude from the article to be lifted and supported, further, the center of gravity of the article to be lifted is lifted by the lifting. In order to be able to easily position the lifted support portion of the device connecting portion substantially below the gravitational direction, the frame may be provided with an abutting member for article positioning whose lateral position along the upper frame portion is adjustable. Good.

Further, in order to finely adjust the overall balance in a state where the article is lifted, a horizontal position along the upper frame portion is provided at a portion from the lifting device connecting portion of the upper frame portion to the free end of the upper frame portion. May be provided with a movable counterweight. The arm portion provided on the lower frame portion may be one that expands and contracts in one step with respect to the lower frame portion or one that expands and contracts in multiple stages as long as it can easily lift the article. The expansion mechanism may be any as long as it does not hinder the lifting support of the article.

[0011] For the one that expands and contracts in one step, for example,
An example in which the arm portion is formed of one arm and the arm is supported by the lower frame portion so as to be able to expand and contract therewith can be cited. For the one that expands and contracts in multiple stages, for example, the arm portion is composed of a plurality of arms arranged in multiple stages in a direction crossing the expansion and contraction direction and in parallel with the expansion and contraction direction, and the outermost arm is a lower frame. Arm is extended and retracted, the inner arm is extended and retracted by the outer arm, and the innermost arm is driven to pull out the outer arm from the lower frame. Or those sequentially pushed into the lower frame portion.

There is no particular limitation on the arm portion expansion / contraction drive device as long as the arm portion can be pushed out or retracted smoothly. For example, when the device is cantilevered, it is perpendicular to the chain extending direction. Although it does not bend even when a load is applied from one direction, it can bend when a force is applied from the opposite direction, and a so-called non-bend back chain that can transmit a pressing force in the chain extending direction can be used.

In this case, the arm portion expansion / contraction drive device is disposed on the frame at the vertical frame portion and the lower frame portion, and a lower end portion is connected to the arm portion and guided by a chain guide provided on the frame. A non-bend back chain provided on the frame,
A sprocket that meshes with the chain; and a motor unit provided on the frame for driving the sprocket to rotate forward and backward. In this case, when the arm portion is composed of one arm as described above, a non-bend back chain may be connected to the one arm, and a plurality of steps are provided in the direction crossing the telescopic direction as described above. When a plurality of arms are arranged in parallel to the direction of expansion and contraction, a non-bend back chain may be connected to the innermost arm.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 is an overall side view of an article hanging device according to one embodiment of the present invention, FIG. 2 is a perspective view of an arm portion provided on a lower frame portion, and FIG. 3 is a lower frame taken along line XX of FIG. FIG. 4 is a side view of a part of the non-bend back chain.

The illustrated article suspender has an upper frame portion 11,
The entirety including the lower frame portion 12 and the vertical frame portion 13 is provided with a substantially C-shaped frame 1. The upper and lower frame portions 11 and 12 extend in the horizontal direction in parallel with each other, and the vertical frame portion 13 connects one end of the upper and lower frame portions. A lifting device connecting portion 2 is fixed to the upper frame portion 11, and has a shaft 21 for engaging a hook F suspended from a crane (not shown). The shaft 21 extends in a direction crossing the frame 11.

The upper frame portion 11 is provided with a movable counterweight 3 between its free end and the above-mentioned lifting device connecting portion 2.
Can reciprocate along. Here, a screw rod 31 rotatably mounted on the upper frame portion 11 is screwed to the counterweight, and the screw rod 31 is connected to the geared motor 3 mounted on the upper frame portion via a gear and a chain transmission mechanism 32.
3 for forward and reverse rotation. Thereby, the horizontal position along the upper frame portion 11 of the counterweight 3 can be finely adjusted.

The counterweight 3 may be fixed at a fixed position, but here the position can be finely adjusted. When the weight of the portion between the free end of the upper frame portion 11 and the lifting device connecting portion 2 is sufficient to serve as a counterweight, a separate counterweight may not be provided. Further, the upper frame portion 11 is provided with a contact member 4 for contacting and positioning an article to be hung. The contact member 4 is 2
It has a pair of upper and lower rollers 41, which hold a rail 42 provided along the upper frame portion 11 from above and below, whereby the contact member 4 is supported by the upper frame portion 11, and It can reciprocate along.

A rack 43 is provided on the upper frame portion 11 in parallel with the rail 42, and a stop claw 44 mounted on the contact member 4 can be engaged with the rack 43. The claw 44 is provided at the upper end of a lever 45 rotatably provided on the contact member 4, and normally engages with the rack 43 by the action of a spring 46 for urging the lever 45 clockwise in FIG. Thus, the contact member 4 is positioned. The contact member 4 can be moved by rotating the lever 45 in the counterclockwise direction in the figure to remove the pawl 44 from the rack 43, thereby adjusting the lateral position along the upper frame portion. The contact member 4 is positioned between a position (position indicated by a solid line in FIG. 1) for positioning the object to be lifted having a minimum width W1 and a maximum width W2.
The position can be adjusted according to the width of the article within the range of the position for positioning the object (the position indicated by the two-dot chain line in FIG. 1).

The fixing position of the lifting device connecting portion 2 to the upper frame portion 11 is such that the gravity center of the product to be lifted is located below the portion of the connecting portion to be lifted and supported (here, the shaft 21) in the direction of gravity. When the article is hoisted in a state where is arranged, the inclination of the entire hanger falls within a predetermined allowable range (here, a substantially horizontal posture). The lower frame portion 12 is provided with an arm portion 5 that can be extended and contracted with respect to the lower frame portion.

As shown in FIGS. 2 and 3, the arm portion 5 is composed of a plurality of arms arranged in two stages in a direction crossing the expansion / contraction direction α and parallel to the expansion / contraction direction α. More specifically, it is composed of a middle one arm (first-stage arm) 51 and a U-shaped arm (second-stage arm) 52 that slidably supports the arm 51 from both sides and from below. I have. The lower frame portion 12 also has a U-shaped cross section, and the second-stage arm 52 is slidably supported by the lower frame portion from both sides and the lower side.

The top surface 121 of the lower frame portion 12 and the top surfaces 511 and 521 of the arms 51 and 52 are each formed so as to form one smoothly continuous curved surface having a circular cross section. It is formed in the shape of a curved surface.
When the lower frame portion 12 and the arm portion 5 are inserted into the center circular hole and lifted, for example, as in a coil formed by winding a metal strip, the inner surface of the hole is formed as little as possible. And stably lift it.

Thus, the arm 51 can expand and contract with respect to the arm 52, the arm 52 can expand and contract with the lower frame portion 12, and the arm portion 5 can expand and contract with the lower frame portion 12 as a whole. Also, as shown in FIGS.
A groove 522 extending in the expansion and contraction direction α is formed on the inner surface of each of the two rising portions, and stopper members 512 provided on both outer surfaces of the arm 51 are slidably engaged with the groove 522. Grooves 122 extending in the expansion and contraction direction α are formed on the inner surfaces of both rising portions of the frame portion 12, and the stopper members 5 provided on both outer surfaces of the arm 52 are formed in the grooves 122.
23 are slidably engaged. These roles will now be described.

The arm 51 is driven to protrude or retreat by the arm unit driving device 6 as described later. When the arm 51 and the arm 52 are both housed in the lower frame portion 12, the arm 51 is pushed out. When the allowable protrusion limit for the arm 52 is reached, the stopper member 512 of the arm 51 engages with the front end wall of the groove 522 of the arm 52 to prevent the arm 52 from dropping off. 52 is a stopper member 51
2 withdrawn. When the arm 52 is pulled out and reaches the allowable protrusion limit with respect to the lower frame portion 12, the stopper member 523 of the arm 52 is moved to the groove 12 of the lower frame portion 12.
2 and is prevented from falling off from the lower frame portion 12.

The arm 51 is retracted from the state in which the arms 51 and 52 protrude, and the arm 51
Is set in the arm 52, the stopper member 5 of the arm 51 is
When the arm 12 is engaged with the rear end wall of the groove 522 of the arm 52 and the arm 51 is further retracted, the arm 52 is pushed into the lower frame portion 12 by the stopper member 512. When the arm 52 fits into the lower frame portion 12, just the arm 52
Stopper member 523 abuts on the rear end wall of the groove 122 of the lower frame portion 12, and further retreat is prevented.

When the arm 51 projects from the arm 52, the stopper member 512 of the arm 51 causes the stopper member 512 of the arm 51 to rotate and drop in the counterclockwise direction in FIG.
When the arm 52 protrudes from the lower frame portion 12, the arm 52 is prevented from contacting the upper wall of the arm 22 and a non-bend back chain 61 described later. The stopper member 523 of the arm 52 is in contact with the upper wall of the groove 122 of the lower frame portion 12 and the stopper member 512 of the arm 51 supported by the non-bend back chain 61
The upper wall 22 is prevented from contacting.

The arm driving device 6 includes a non-bend back chain 61 disposed on the vertical frame 13 and the lower frame 12 of the frame 1. The non-bend back chain 61 is known per se, and as shown in FIGS. 1 and 2, one end (lower end) 6 of the chain.
11 is connected to the rear end of the arm 51, extends from the connection point in the lower frame portion 12 in the extending direction of the lower frame portion, and is arranged so as to be curved and rise in the vertical frame portion 13. .

In the chain, a portion on the arm 51 side from the curved portion is guided by upper and lower chain guides 62, and the portion on the arm 51 side is cantilevered by the guides. The curved portion is guided by a curved chain guide 63, and a portion in the vertical frame portion 13 is guided by a vertical chain guide 64. A sprocket 65 is rotatably supported in the vertical frame portion 13, meshes with the chain 61, and is driven by a geared motor 67 mounted on the vertical frame portion 13 via a transmission 66 to rotate in a forward / reverse direction. Is done.

Chain 61, chain guides 62, 6
3, 64, the sprocket 65, the transmission 66, and the motor 67 constitute the arm drive 6. The non-bend back chain 61 is arranged as shown in FIG. 4 with a portion 612 closer to the arm 51 than the curved portion being extended in a state of being cantilevered by the upper and lower chain guides 62, and is arranged as shown in FIG. Even if a load P is applied from above, the bending force does not bend, and the pressing force and the pulling force can be transmitted in the chain extension direction β.

Thus, the sprocket 6 is
By rotating 5, the chain 61 can be extended, the arm 51 can be pushed out, or the arm 52 can be protruded by a desired amount. Further, the arm 61 or the arm 52 can be retracted by pulling the chain 61. The article suspending device described above can lift an article such as a coil formed by winding a metal strip by supporting it with the lower frame portion 12 or the lower frame portion and the arm portion 5 protruding therefrom.

To explain an example of the transfer of the coil, for the light-weight coil C1 having the minimum width W1 of the coils to be lifted, the positioning contact member 4 is moved with the arm portion 5 being accommodated in the lower frame portion 12. By utilizing, the center of gravity of the coil is positioned below the shaft bar 21 of the lifting device connecting portion 2 in the direction of gravity, and the lower frame portion 12 and the arm portion 5
The coil C1 is safely and well-balanced in a state in which the inclination of the entire hanging tool falls within a predetermined allowable range.
The lower frame portion 12 and the arm portion 5 can be lifted and supported without protruding from the lower portion.

The maximum width W of the coils to be lifted is
2 weight coil C2, arm 5 of arm 5
1 and 52 are made to protrude from the lower frame portion 12 and the center of gravity of the coil is positioned below the shaft 21 of the lifting device connecting portion 2 in the direction of gravity using the positioning contact member 4;
The lower frame portion 12 and the arm portion 5 safely and stably in a well-balanced state with the inclination of the entire hanging tool falling within a predetermined allowable range, and in a state where the arm portion 5 does not protrude from the coil C2. Can be lifted and supported.

Also, with respect to the coil having an intermediate width between the maximum width and the minimum width, the arm portion 5 is protruded from the lower frame portion 12 by an appropriate amount, and in a state where the arm portion 5 does not protrude from the coil, it is safely and well-balanced. Can be lifted and supported stably. Thus, articles having a wide range of weights can be lifted so that they can be safely and well-balanced, and can be smoothly lifted and lowered.

[0033]

According to the present invention, there is provided a compact article suspending device capable of lifting articles having a wide range of weights safely and in a well-balanced manner so that the articles can be smoothly lifted and lowered. can do.

[Brief description of the drawings]

FIG. 1 is an overall side view of an article hanging device according to an embodiment of the present invention.

FIG. 2 is a perspective view of an arm provided on a lower frame.

FIG. 3 is a sectional view of a lower frame portion and an arm portion taken along line XX of FIG. 1;

FIG. 4 is a side view of a part of the non-bend back chain.

FIG. 5 is a side view of a conventional example.

FIG. 6 is a side view of another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 11 Upper frame part 12 Lower frame part 13 Vertical frame part 2 Lifting device connection part 21 Shaft bar (supporting part to be lifted) 3 Movable counterweight 31 Screw bar 32 Transmission device 33 Geared motor 4 Contact member for article positioning 41 Roller 42 Rail 43 Rack 44 Stop claw 45 Lever 46 Spring 5 Arm 51 First stage arm 52 Second stage arm 6 Arm expansion / contraction drive 61 Non-bend back chain 62, 63, 64 Chain guide 65 Sprocket 66 Transmission 67 Geared motor

Claims (3)

[Claims] 1. A C-shaped frame comprising: an upper frame portion and a lower frame portion extending in a horizontal direction in parallel with each other; and a vertical frame portion connecting one end of the upper and lower frame portions; A lifting device connecting portion fixed to the portion, an arm portion provided on the lower frame portion so as to be able to adjust the amount of protrusion from the lower frame portion so as to be extendable and contractible in the lateral direction, and the arm portion is driven to expand and contract. And a fixing position of the lifting device connecting portion to the upper frame portion is substantially equal to a gravity direction of a suspended supporting portion of the lifting device connecting portion. When the center of gravity of an article suspended and supported by the lower frame portion or the lower frame portion and the arm portion protruding therefrom is disposed below, the inclination of the entire hanging device is set to a predetermined allowable range. Article hanger which is a position to enter. 2. The article suspender according to claim 1, further comprising an article positioning contact member provided on said frame and capable of adjusting a horizontal position along said upper frame portion. 3. A movable counter provided on a portion of the upper frame portion from the lifting device connecting portion to a free end of the upper frame portion so that a horizontal position along the upper frame portion can be adjusted. The article suspender according to claim 1 or 2, further comprising a weight.