JPH061576Y2 - Hanging device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a lifting device used to lift a material to be hung, such as a steel pipe.

(Prior Art) Conventionally, when a steel pipe is loaded onto a ship, a crane and a suspending device suspended from the wire of the crane are used. At this time, generally, the hook claw member of the suspending device is replaced with the steel pipe. Workers were doing work such as hanging on and removing from. In this case, since the tank is deep, as the steel pipes are stacked in multiple stages, the upper steel pipes become considerably higher than the bottom of the ship.

(Problems to be Solved by the Invention) In such a conventional suspension device, as the multistage stacking height of steel pipes increases, the work of removing the hook claw members from the steel pipes becomes a work at a high place with poor footing, which is dangerous. There was a problem.

An object of the present invention is to provide a suspending device that can automatically perform work such as hooking a hook claw member on a material to be hung and removing it.

(Means for Solving the Problems) The structure of the present invention that achieves the above object will be described. The present invention provides a suspension base and a pair of upper ends rotatably connected to both ends of the suspension base. A suspension arm, an arm operation cylinder for opening / closing each suspension arm, and a hook mechanism provided at a lower end of each suspension arm, wherein each hook mechanism includes a hook claw member and a lock. The hook claw member is pivotally attached to the suspension arm with a first pin at an intermediate portion thereof, and the lock member is provided with a second pin at an intermediate portion thereof. The suspension arm is pivotally attached, one end of the connecting link is pivotally attached to the hook claw member by a third pin, and the other end is pivotally attached to the lock member by a fourth pin, and the lock member operating cylinder is at one end. Is the hanging The other end of the arm is pivotally attached to the base end of the lock member to rotate the lock member. The base end of the hook claw member and the tip end of the lock member have a tip end portion of the hook claw member. A butting contact surface that is abutted against each other when the hanging material is suspended and locked, and the fourth pin has the lock claw member that suspends and locks the suspended material and both the butting contact surfaces. Is in a state of being abutted with each other, it is in the region on the first pin side with respect to the straight line connecting the second pin and the third pin.

(Operation) In such a hook mechanism, when the lock member is set at a position where it can be hooked on the suspended material and the lock member operating cylinder is extended, the lock member rotates in the lock direction, and the connection link is generated by the rotation of the lock member. The hook claw member rotates in the locking direction via the, and the butt contact surface of the lock member abuts the butt contact surface of the hook claw member. When the movement of the lock member operating cylinder is stopped in this state, the hook claw member is in a hooking posture in which the material to be hung is hooked, and is locked in that state by the lock member. When the lifting device is raised in this state, the material to be hung can be hooked and lifted by the hook claw member.

Further, when the lock member operating cylinder is contracted when reaching the target position, the lock member rotates in the unlocking direction, the fourth pin exceeds the dead point, and the butt contact surface of the lock member is changed to the butt contact surface of the hook claw member. And the hook claw member becomes free, and the hook claw member comes off the suspended material.

Therefore, the work of automatically hooking the hook claw member to the material to be hung and the work of removing the hook claw member can be performed.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1 and FIG. 2, the suspension device of the present embodiment comprises a suspension base 1 and a pair of suspension arms whose upper ends are rotatably connected to both ends of the suspension base 1 by pins 2. 3, an arm operating cylinder 4 for opening and closing these hanging arms, and a hook mechanism 5 provided at the lower end of each hanging arm 3.
And a receiver 6 for remotely controlling an arm operating cylinder 4 having an in-and-out rod 4a and a cylinder of the hook mechanism 5 to be described later, and a suspending wire 8 for suspending the suspending base 1 with a hook 7 of a crane. ing. The receiving unit 6 includes an antenna 6a.

Each hook mechanism 5 includes a hook claw member 9 and a lock member 10.
, A connecting link 11, and a lock member operating cylinder 12 having an in-and-out rod 12a. The hook claw member 9 has a first pin 13a at an intermediate portion thereof to suspend the suspension arm 3
Is rotatably connected to and supported by.

An intermediate portion of the lock member 10 is rotatably connected to and supported by the suspension arm 3 by the second pin 13b.

One end of the connecting link 11 is rotatably connected to and supported by the hook claw member 9 by the third pin 13c, and the other end is rotatably connected and supported by the lock member 10 by the fourth pin 13d.

The lock member operating cylinder 12 has a suspension arm 3 at the base end.
In addition, the distal end of the rod 2a is rotatably connected to and supported by the base end of the lock member 10 to rotate the lock member 10.

At the base end of the hook claw member 9 and the tip end of the lock member 10,
Butt contact surfaces 9a, 10a which are butted against each other when the tip of the hook claw member 9 suspends and suspends the suspended material 14.
Is provided. The butt contact surface 9a of the hook claw member 9 is
The second pin 13b has a concave arc surface, and the butt contact surface 10a of the lock member 10 has a convex arc surface having the second pin 13b as a center.

The second pin 13b, the third pin 13c, and the fourth pin 1
As for the mutual positional relationship of 3d, the hook claw member 9 is the suspended material 1
4 is suspended and locked, and both the butted contact surfaces 9a and 10a are butted, the fourth pin 13d slightly moves with respect to the straight line 15 connecting the second pin 13b and the third pin 13c. It is set so as to be in the area on the first pin 13a side.

Next, the operation of the hook mechanism 5 will be described with reference to FIGS. 3 and 4.

FIG. 3 shows a state in which the hook claw member 9 is open.
When the locking member operating cylinder 12 is extended at a position where the hook claw member 9 can be hooked on the suspended material 14, the locking member 10 rotates in the locking direction (counterclockwise direction in FIG. 3), and the locking member 10 By rotation, the hook claw member 9 is locked in the locking direction (counterclockwise in FIG. 3) via the connecting link 11.
The butt contact surface 10a of the lock member 10 is butted against the butt contact surface 9a of the hook claw member 9, and the state shown in FIG. 4, that is, the hook claw member 9 is in the hooked posture. When the lifting device is raised in this state, the hook claw member 9 causes the suspended material 14
The suspended material 14 can be lifted by being caught by.

When the hook claw member 9 shown in FIG. 4 is in the hooked posture, the fourth pin 13d is slightly on the first pin 13a side with respect to the line 15 connecting the second pin 13b and the third pin 13c. It is at the point of entering the area, that is, beyond the dead point.
By doing so, the torque of the hook claw member 9 due to the load of the material to be hung 14 tends to turn in the direction opposite to the unlocking direction, so that the butt contact surface 9a is moved to the butt contact surface of the lock member 10. 10a is strongly pressed to lock the hook claw member 9.

When releasing the suspended material 14, the crane wire of the crane is unwound to bottom the suspended material 14, and when the crane wire is further unwound from this state, the hook claw member 9 further lowers. 14, the load applied from the suspended material 14 to the hook claw member 9 is released. In this state, when the lock member operating cylinder 12 is contracted, the fourth pin 13d exceeds the dead point, the butt contact surface 10a of the lock member 10 is disengaged from the butt contact surface 9a of the hook claw member 9, and the hook claw member 9 Becomes free and comes off the suspended material 14.

Next, a suspending operation of the suspended material 14 by the suspending device will be described with reference to FIGS. 5 (A), (B) and (C).

As shown in FIG. 5 (A), the hanging wire 8 is hooked on the hook 7 of the crane to suspend the hanging device. The hanging device is lowered to a position where the hook claw member 9 faces the hole of the material 14 to be hung. The suspending arm 3 is closed by operating the arm operating cylinder 4 and brought into contact with the end of the suspended material 14. By pushing out the rod 12a of the lock member operating cylinder 12,
As shown in FIG. 5 (B), the hook claw member 9 is in the hooked posture.

The crane wire is wound up and the hook claw member 9 is made to stick to the hanging material 14 as shown in FIG. 5 (C). In this state, the hanging material 14 is lifted and carried to the destination. At the destination, the suspended material 14 is lowered, the bottom is set, the suspending device is further lowered, and the hook claw member 9 is separated from the suspended material 14,
The lock member operating cylinder 12 is contracted to make the hook claw member 9
To an open position. Hoist the crane wire, hoist the lifting device and carry it to your next work destination.

All of the above operations are performed by the battery-operated electrohydraulic drive type radio control device. When performing continuous operation for a long time, an automatic charging device may be loaded.

(Effects of the Invention) As described above, since the hanging device according to the present invention is provided with the cylinder operation type hook mechanism at the lower end of the hanging arm, the hook claw member can be hooked or removed from the hanging material. The operations can be automatically performed, and it is not necessary for the worker to manually perform these operations, and the safety of the worker can be ensured. Particularly, since the hook mechanism used in the present invention is composed of the hook claw member, the lock member, the connecting link, and the lock member operating cylinder, it has an advantage that the structure is simple and can be implemented at low cost.

[Brief description of drawings]

FIG. 1 is a side view of a hook mechanism which is an essential part of an embodiment of a suspension device according to the present invention, and FIG. 2 is a side view of an embodiment of a suspension device according to the present invention, FIGS. 3 and 4. Is an operation explanatory view of the hook mechanism of the present embodiment, and FIGS. 5 (A), (B) and (C).
Each is an operation explanatory view of the suspension device of the present embodiment. DESCRIPTION OF SYMBOLS 1 ... Suspension base, 2 ... Pin, 3 ... Suspension arm, 4 ... Arm operation cylinder, 5 ... Hook mechanism, 6 ... Receiving part, 7 ... Hook, 8 ... Suspension wire, 9 ... Hook claw member, 10 ... Lock member , 11 ... Link member, 9a, 10a ... Butt contact surface, 12 ... Lock member operating cylinder, 13a ... First pin, 13b ... Second pin, 13c ... Third pin, 13d
... 4th pin, 14 ... Suspended material.

Claims (1)

[Scope of utility model registration request] 1. A suspension base, a pair of suspension arms whose upper ends are rotatably connected to both ends of the suspension base, an arm operating cylinder for opening and closing each suspension arm, and each suspension. In a suspending device including a hook mechanism provided at a lower end of an arm, each hook mechanism includes a hook claw member, a lock member, a connecting link, and a lock member operation cylinder, and the hook claw member is An intermediate portion is pivotally attached to the suspension arm by a first pin, the locking member is pivotally attached to the suspension arm at an intermediate portion by a second pin, and the connection link has a third pin at one end and the hook. The claw member is pivotally mounted and the other end is pivotally mounted to the lock member by a fourth pin, and the lock member operating cylinder has one end pivotally mounted to the suspension arm and the other end pivotally mounted to the base end of the lock member. Lock member A butt contact surface is provided on the base end of the hook claw member and the tip end of the lock member, which are dynamically operated and abut against each other when the tip end of the hook claw member suspends and locks a suspended material. The fourth pin is a straight line connecting the second pin and the third pin in a state where the lock claw member suspends and locks the material to be hung and the both butting contact surfaces are butted. On the other hand, the hanging device is in the region on the side of the first pin.