JPH0517096A - Tongue - Google Patents

Abstract

PURPOSE:To provide a tongue with the catching function by tongue punches and hooking function by hooks by installing a tongue punch at the lower edge of each arm of a tongue suspended on a crane and integrally forming a hook at least on each opposed one side of the tongue punch. CONSTITUTION:Two arms 21 and 22 whose center parts are axially supported in turnable manner on a frame 11 are arranged oppositely. An actuator 27 is interposed between the upper edges of the arms 21 and 22, and opens and closes each lower edge of the arm. Further, tongue punches 30 and 31 are arranged oppositely to the inside edge surfaces at the lower edges of the arms 21 and 22. Hooks 21c and 22c are formed integrally at least at each opposed one side of the tongue punches 30 and 31 of a tongue 20 which is suspended by a crane and nipping-suspends a transported article at the lower edge of each arm 21, 22. This tongue can be provided with the catching function by the tongue punches and the hooking function by the hook.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to tongs having multiple functions.

[0002]

2. Description of the Related Art For example, a tong crane 1 as shown in FIG. 5 is used to convey an ingot or a steel ingot, a mold, a double surface plate, or the like. The tongs 4 are suspended from the hooks 3 of the crane body 2 so that they can be raised and lowered and swung.
The hydraulic cylinder 5 interposed between the upper ends 4a and 4a is expanded and contracted, and the tongue punches 6 and 6 provided at the lower ends 4b and 4b hold both sides of the ingot.

A double surface plate 8 and a mold 9 are placed on the large surface plate 7, and the mold 9 is inserted from the large surface plate 7 side through the double surface plate 8.
The ingot to be melted supplied to is solidified in the mold 9 to become an ingot 10. When taking out the ingot 10 from the mold 9, the operator operates the crane to lower the tongue 4 as shown by the chain double-dashed line and extend the hydraulic cylinder 5, and the tongue punches 6, 6 at the tip end allow the ingot 10 to move. After firmly holding both sides of the tongue 4, the tongue 4 is raised to pull out the ingot 10 from the hanging mold 9.

[0004]

However, when removing the empty mold 9 from the double platen 8, it is necessary to suspend the mold 9 by another crane. That is,
Since the mold 9 is fragile unlike the ingot 10, the ingot 1
When using the tongs 4 to hang 0, the hydraulic cylinder 5
The mold 9 is broken because the holding force (grasping force) is strong. Therefore, chains are hung on round rod-shaped metal fittings 9a, 9a provided on both sides of the mold 9, and hooked on a hook of a crane different from the tongs crane 1 to be hung and transported. For the double surface plate 8 as well as the mold 9, the metal fitting 8
The chains a and 8a are hung so that they can be suspended by the other crane.

That is, the conventional tongue 4 is used only for suspending the ingot 10, that is, used only for taking out the ingot 10 from the mold 9 or for reversing work of the taken-out cast steel 10 in the subsequent step. When removing or installing the double surface plate 8 or the mold 9 from the large surface plate 7, it is necessary to prepare a dedicated crane in addition to the tong crane 1. Therefore, there are problems that the equipment cost is high and the workability is poor.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a multi-functional tongue capable of easily suspending and transporting not only ingots but also fragile molds. To aim.

[0007]

In order to achieve the above object, according to the present invention, two arms which are arranged to oppose each other and whose substantially centers are pivotally supported by a frame, and these arms are provided. Each actuator has an actuator interposed between the upper ends to open and close the lower ends, and a tongue punch provided to oppose the inner end surface of the lower ends of the arms.The tongue punch is suspended by a crane and holds the transported object at the lower ends of the arms. In the hanging tongs, hooks are integrally formed on at least one opposite side of each tongue punch at the lower end of each arm.

[0008]

When the ingot is suspended from the ingot, the tongs strongly hold both sides of the ingot by the lower ends of the two arms by the actuator and suspend the suspension. Also, when suspending fragile items such as molds, the lower ends of the two arms should be opened slightly wider than the molds, and hooks should be hooked on the metal fittings provided on both sides of the molds. Lower. This makes it possible to easily suspend even fragile objects such as molds.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In FIG. 1, the tongs 20 have two arms 2
1, 22 are arranged to face each other, and each arm 21, 22 is
Positions slightly above the center are rotatably supported by the frame 11 via tong pins 23 and 24, respectively. A tongue pin 2 is provided on the inner end surface of each arm 21 and 22 which faces each other.
These tongue pins 23, 24 are provided at the height positions of 3, 24.
The fan-shaped tuning gears 25 and 26 having the center of rotation as the center of rotation are fixed, and these tuning gears 25 and 26 mesh with each other.
As a result, the arms 21 and 22 can be opened symmetrically.

The upper ends 21a, 22a of the arms 21, 22
A hydraulic cylinder 27 is interposed between the cylinder 2 and
The bottom of 7a is attached to the upper end 21a of the arm 21 and the rod 27
The tip of b is rotatably attached to the upper end 22a of the arm 22 via cylinder pins 28 and 29, respectively. Also,
The tongue punches 30 and 31 are provided on the inner end surfaces of the lower ends 21b and 22b of the arms 21 and 22 that face each other. The end faces of the tongue punches 30, 31 that oppose each other are curved so that they can be pressed against the side faces of the ingot.

The lower end 21 of each arm 21, 22
b and 22b have hooks 21c, 21d (FIG. 2) and 22
c and 22d (not shown) are integrally formed. As shown in FIG. 2, the lower end 21b of one arm 21 has a hook 21c and a hook 2 on both left and right sides with the tongue punch 30 interposed therebetween.
1d is formed, and one hook 21c is for hanging the mold 9 (FIG. 3), for example, and is an arc-shaped notch slightly larger than the round bar-shaped metal fitting 9a of the mold 9. In addition, the tip 21c 'is slightly raised upward to form a hook shape, so that the metal fitting 9a is difficult to come off.

The other hook 21d is for suspending the double surface plate 8 (FIG. 4), is thinner than the hook 21c, and has a tip 21d 'formed flat.
This is because the double platen 8 is lower than the mold 9 as shown in FIG. 4, and the interval between the round bar-shaped metal fitting 8a and the large platen 7 is narrow.
Therefore, the hook 21d is thin and flat so that it can be easily inserted between the metal fitting 8a and the large surface plate 7. The hooks 22c and 22d of the other arm 22 are also formed symmetrically with the hooks 21c and 21d of the arm 21,
The hooks 21c and 22c and 21d and 22d oppose each other. Then, this tongue 20 is suspended from the hook 3 of the crane main body 2 so as to be able to move up and down and turn, similarly to the conventional tongue 4 shown in FIG.

The operation will be described below. In FIG. 1, the tongue 20 has the lower ends 21b of the arms 21 and 22 as shown by the solid lines when the hydraulic cylinder 27 is shortened.
22b is widened to the maximum so that the ingot (not shown), the mold 9, the double surface plate 8 and the like can be suspended. The arms 21 and 22 are symmetrically expanded by the tuning gears 25 and 26. Also, tongs 2
0 means that when the hydraulic cylinder 27 extends, the arms 21, 22
The lower ends 21b and 22b of the above are narrowed as shown by the chain double-dashed line so that the ingot can be held.

When the ingot 10 (FIG. 5) is suspended, the tongue 20 has an arm 21 by means of a hydraulic cylinder 27,
22 tongue punches 30 and 31 at the tips 21b and 22b
Is strongly pressed against both sides of the ingot 10 and held. When the tongue 20 is pulled up by the crane in this state, the ingot 10 is lifted and taken out of the mold. When suspending the mold 9 shown in FIG.
The operator works on the lower ends 21 of the arms 21, 22 of the tongs 20.
b, 22b are opened slightly wider than the mold 9, and the hooks 2 of the lower ends 21b, 22b are provided below the metal fittings 9a, 9a on both sides.
After moving 1c and 22c to hook the hooks 21c and 22c on the metal fittings 9a and 9a (FIG. 3), the tongue 20 is lifted. As a result, the tongue 20 can easily suspend the mold 9.

In the case of suspending the double surface plate 8 (FIG. 5), the operator, similarly to the above, operates the arm 2 of the tongue 20.
The tips 21b and 22b of the Nos. 1 and 22 are slightly wider than the double platen 8, and hooks 21d and 22d are inserted between the metal plates 8a and 8a on both sides and the large platen 7, respectively. 8
After hooking hooks 21d and 22d on a and 8a (FIG. 4), the tongue 20 is lifted. Thereby, the tongs 20 can easily suspend the double surface plate 8.

[0016]

As described above, according to the present invention, two arms which are arranged so as to oppose each other and whose substantially centers are rotatably supported by the frame are interposed between the upper ends of these arms. An actuator that opens and closes each lower end and a tong punch provided to face the inner end surface of the lower end of each arm is provided, and in the tongs that are hung by a crane and hold the transported object at the lower end of each arm to hang it, By integrally forming a hook on at least one opposing side of each tongue punch at the lower end of each arm, other than the ingot,
Fragile molds and double stools can be easily hung, and a single tong can be used for both gripping and hooking work, improving work efficiency and for hanging cranes. The number of installations can be reduced,
There is an effect that the facility cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a tongs according to the present invention.

FIG. 2 is an end view in the direction of arrow II in FIG.

FIG. 3 is a view showing a state in which the metal mold of the mold is hooked by the tongs of FIG.

FIG. 4 is a view showing a state in which a metal fitting of a double surface plate is hooked by the tongs of FIG.

FIG. 5 is a front view of a main part of a conventional tongs crane equipped with tongs.

[Explanation of symbols]

 7 Large surface plate 8 Double surface plate 9 Mold 10 Ingot 20 Tong 21, 22 Arm 21c, 21d, 22c, 22d Hook 25, 26 Tuning gear 27 Hydraulic cylinder 30, 31 Tong punch

Claims (1)

Claim: What is claimed is: 1. Two arms, which are arranged so as to oppose each other and whose substantially centers are rotatably supported by a frame, and the lower ends of which are interposed between the upper ends of the arms and which are opened and closed. In the tongs that are provided with an actuator that causes them and a tongue punch provided so as to oppose the inner end surface of the lower end of each arm, and the tongue that is hung by a crane and holds the transported object by the lower end of each arm The tongs each having a hook integrally formed on at least one opposing side of each of the tongue punches.