JPH0647437B2 - Vertical Horizontal Clamp - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a clamp used for lifting work such as steel materials.

[0002]

2. Description of the Related Art Generally, when roughly classifying as a lifting clamp for steel materials or the like, a gripping port of a suspended member is opened downward in a main body composed of two side plates which are fixed relative to each other at a predetermined interval. There is a vertical suspension clamp and a horizontal suspension clamp that has the same mouth opening sideways in the main body.

Conventionally, these clamps have been constructed for vertical and horizontal suspension, respectively. Depending on the shape of the member to be hoisted and the like, the clamps may be replaced with a crane hook or the like, or both may be mounted on the crane hook or the like as appropriate. Lifting work of steel etc. is performed by exchanging and using it.

However, in this case, not only the time and effort required for exchanging the clamps cannot be swiftly worked, but also when both are mounted on a crane hook or the like, an unused clamp on one side interferes with the safety of the work. It is not preferable in terms of sex.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a clamp which has an extremely simple structure and is configured for both vertical and horizontal suspension.

According to the first aspect of the present invention, there is provided a vertically-horizontal dual-use clamp which has a main body composed of two side plates which are fixed relative to each other at a predetermined interval, and which is vertically suspended on a plate surface of the main body. Provide a holding opening for the hanging member that is opened downward and a holding opening for the hanging member that is horizontally opened for horizontal hanging, and position them so as to face each other between the side plates on both sides through these holding openings. A fixed pad for sandwiching the suspended member between them and a movable cam, and a shackle for vertically moving the corresponding distance between the sandwiching point and the open point of the suspended member is moved upward from between the side plates of the main body. Between the shackle and each movable cam, a link mechanism for synchronously moving each movable cam from between the side plates of the main body to each gripping mouth or rotating it backward is constructed. There is.

As the link mechanism for connecting the shackle and each movable cam, in the clamp according to the second aspect, the lower end of the shackle and the rear side of the vertical movable cam via the pivot are connected by bearings. A main link bar and a sub-link bar that is axially connected to the intermediate side of the main link bar and the front side of the horizontal hanging movable cam via the pivot.
In the clamp according to claim 3, a bell crank pivotally mounted between the side plates of the main body, and the lower end of the shack is pivotally connected to one arm end, and the other arm end of the bell crank is movable. The cam is provided with two link bars, each of which is rotatably connected to the front side of the cam via the pivot.

[0008]

According to the first aspect of the present invention, there is provided a holding pad for holding a suspended member separately in one main body and a fixed pad for sandwiching the suspended member at each of the retaining holes. Since each of them is equipped with a movable cam and a movable cam, not only can the vertical and horizontal suspension of the suspended member be carried out as a single body, but also each movable cam can be synchronously moved from the side plates of the main body to the grip port. Since it is connected to one shackle through a link mechanism so that it can be pushed out or rotated backward, necessary vertical and horizontal suspension parts can be used without changing the attachment state to the crane hook or the like.

As for the link mechanism, even if the clamp according to claim 2 is constructed as a direct connection type and the clamp according to claim 3 is constructed as a bell crank interposed type, two link bars are provided. It is possible to construct a structurally extremely simple one because it is constructed only by connecting the.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1, 2 and 3 and 4 show different embodiments respectively. FIGS. 1 and 3 show a released state of a suspended member, and FIGS. Shows the sandwiched state of.

In each drawing, 1 is a main body portion, 2 is a holding hole for vertically hanging a suspended member, 3 is a holding hole for horizontally suspending a suspended member, 4, 5 are fixed pads, and 6 and 7 are movable cams. , 8 is a shackle, 9 in FIGS. 1 and 2 is a link mechanism, and FIGS.
Reference numeral 90 denotes a link mechanism structurally different from the link mechanism shown in FIGS.

The main body 1 is composed of two side plates which are fixed relative to each other with a space therebetween, and the respective constituent parts described later are mounted in the spaces between the side plates.

The holding holes 2 and 3 of the member to be hung are formed by notching the relative surfaces of the side plates forming the main body 1 from the peripheral edge in a substantially U-shape, and the holding port 2 of the member to be hung. It is provided with a downward opening for vertical suspension.
Further, the holding mouth 3 is provided by laterally opening for hanging the hanging member horizontally. When the holding mouth 3 is formed with a slight inclination so that the opening side is located diagonally upward of the main body 1. Good.

The fixed pads 4, 5 and the movable cams 6, 7 are
It is attached so as to be opposed to each other between the side plates on both sides via the respective grip openings 2 and 3. Among them, the fixing pads 4 and 5 are attached and fixed between the side plates of the main body 1 with the front sides 4a and 5a projecting to the holding holes 2 and 3. Also, the rotating cams 6 and 7 are pivot shafts 10 inserted in eccentric positions,
The front side 6a, 7a via the pivots 10, 11 is pivotally supported by 11, and is mounted so as to push out or retreat from the space between the side plates of the main body 1 to the holding holes 2, 3. There is. In addition, the movable cam 6 is disposed on the equipment side of the chain U-handle that is connected via a coil spring described later on the vertical suspension side, and on the side of the horizontal suspension, the suspended member is a rotating cam. Fixed pad 5 for stable and reliable clamping with 7
Is preferably arranged on the lower side of the mouth 3.

The shackle 8 is formed with an eye ring portion 8a for hanging on a crane hook, a support rod portion 8b extending downward from the eye ring portion 8a, and an engaging groove formed on one side of the upper portion of the support rod portion 8b. The projection 8c is formed by bulging, the supporting rod 8b is inserted between the side plates of the main body 1, and the eye ring 8a is provided above the main body 1. The supporting rod 8b has a corresponding distance R between the open point A and the clamping point B of the suspended member.
And a guide groove 13 for guiding a support shaft 12 for axially connecting a lower end portion of the support rod portion 8b and a link bar described later along a distance R faces side plates forming the main body portion 1. It is provided on the surface. The protrusion 8c of the shackle 8 is fixed to the stopper shaft 1 inserted between the side plates of the main body 1 and fixed.
The shackle 8 is formed so as to stop the positioning by engaging with the shackle 4.

The link mechanism 9 shown in FIGS. 1 and 2 includes a movable cam 6 for vertical suspension and a shackle support 8b for the movable cam 6.
A main link bar 9a that is connected to the later-described side of the main link bar 9a and the lower end of the supporting rod 8b, and the main link bar 9a and the movable cam 7 for horizontal suspension, the intermediate side of the main link bar 9a and the front part of the movable cam 7. The auxiliary link bar 9b is connected to the side 7a. The link mechanism 9 has a main link bar 9a and a sub link bar 9b for synchronously moving the movable cams 6 and 7 from between the side plates of the main body 1 to the gripping openings 2 and 3 and rotating them. Each movable cam 6, 7 and shackle 8 via
Are assembled by bearings 12, 15 and 16 and 17 for bearing connection.

The link mechanism 90 shown in FIGS.
Bell crank 91 pivotally supported by a support shaft 18 between the side plates of the
The bell crank 91 has one arm end 91a to which the supporting rod portion 8b of the shackle 8 is rotatably connected by the supporting shaft 19, and the other arm end 91b of the bell crank 91 and the front side of each movable cam 6,7. Two link bars 92 and 93, which are connected to 6a and 7a by supporting shafts 20, 21, and 22, are provided. The link bars 92, 93 have one end side pivotally attached to the other arm end 91b of the bell crank 91 by the support shaft 19, while one end side of the link bars 92, 93 is provided on both sides via the arm end 91b of the bell crank 91. It is good to arrange.

In the clamp thus constructed, when a pulling force is applied to the shackle 8 from the opening point A to the clamping point B, the movable cams 6 and 7 are caused to move through the link mechanisms 9 and 90 to the side plate of the main body 1. The front side 6a, 7a, which is in the retracted position, is operated synchronously so as to be pushed out to each of the mouths 2, 3. Prior to that, the holding mouths 2 and 3 may be selected according to the necessity of vertical hanging or horizontal hanging, and the suspended member may be inserted into any of the selected holding mouths 2 and 3. Even if the suspended member is inserted into any of the selected mouths 2 and 3, the movable cams 6 and 7 are shackle 8
Since it is operated synchronously by the pulling force applied to, vertical or horizontal suspension can be selected freely.

In this clamp, each movable cam 6,
A lock mechanism 30 for locking 7 in a clamping position with respect to the suspended member is provided. The lock mechanism 30 has one end side of the U handle 31 pivotally mounted between the side plates of the main body portion 1 by a support shaft 32, and the other end side of the U handle 31 extending outward from the main body portion 1 and vertically movable. A coil spring 33 is attached and mounted between the cam 6 and the rear side 6b via the pivot 10.

In the lock mechanism 30, when the U handle 31 is rotated upward with the support shaft 32 as a fulcrum to be positioned and fitted between the side plates of the main body 1, the movable cam 6 is pulled by the coil spring 33. The gripping port 2 is locked at the protruding position, that is, at the pinching position of the suspended member. In this state, the horizontal hanging movable cam 7 also has the link mechanism 9,
Since it is locked via 90, it is possible to perform the locking function for the vertical and horizontal movable cams 6, 7.

[0021]

As described above, according to the vertically-horizontal suspension dual-use clamp of the present invention, the movable cams for vertically-horizontal suspension are synchronously rotated by the pulling or pushing force acting on one shackle. Therefore, the work efficiency can be improved by being able to use it for vertical or horizontal suspension at any time as required. In addition, the link mechanism that operates each movable cam is also assembled in a simple structure, so one
In addition to reducing equipment costs by being able to use it in both horizontal and horizontal directions, it also has the economic advantage of being able to reduce manufacturing costs.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a vertical horizontal dual-purpose clamp according to an embodiment of the present invention in a releasing operation state of a suspended member.

FIG. 2 is an explanatory diagram showing the clamp of FIG. 1 in a state of holding a suspended member.

FIG. 3 is an explanatory view showing a vertical horizontal suspension dual-use clamp according to another embodiment of the present invention in a releasing operation state of a suspended member.

FIG. 4 is an explanatory view showing the clamp of FIG. 3 in a holding operation state of a suspended member.

[Explanation of symbols]

 1 Main body 2 Hold port for hanging members for vertical suspension 3 Hold port for hanging members for horizontal suspension 4,5 Fixed pad 6,7 Movable cam 8 Shackle 9,90 Link mechanism 9a Main link bar 9b Sub link bar 91 Bell crank 92, 93 Link bar

Claims (3)

[Claims] 1. A holding portion and a side of a hanging member opened downward for vertical suspension, which has a main body composed of two side plates fixed relative to each other at a predetermined interval, and which is provided on a plate surface of the main body. A holding hole for the hanging member that is opened laterally for hanging is provided, and it is movable between a fixed pad that sandwiches the hanging member between the side plates facing each other through these holding holes. Each of them is equipped with a cam, and a shackle that vertically moves the corresponding distance between the holding point and the opening point of the suspended member is provided above the side plates of the main body, and between the shackle and each movable cam. A vertical horizontal suspension characterized in that a shackle and each movable cam are connected by interposing a link mechanism for synchronously pushing the movable cam from between the side plates of the main body part to each grip opening or retracting the movable cam. Dual-purpose clamp. 2. A main link bar in which the link mechanism is rotatably connected to a lower end of a shackle and a rear side of a vertical movable cam via a pivot, an intermediate side of the main link bar, and a horizontal horizontal movable cam. 2. A sub-link bar, which is rotatably connected to the front side via a pivot axis of the.
Vertical and horizontal hanging clamp. 3. A bell crank in which the link mechanism is pivotally mounted between side plates of a main body, and a lower end of a shack is pivotally connected to one arm end, and another arm end of the bell crank and each movable cam. The vertical and horizontal suspension dual-use clamp according to claim 1, further comprising: two link bars that are pivotally connected to the front side via a pivot.