JPH072545Y2 - Suspension device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a suspension device, and more particularly to a suspension device suitable for unloading work on water such as the sea or river.

[Conventional technology]

When carrying heavy objects by helicopter, conventionally, the luggage is hung by an electric opening / closing hook device and transported to a destination, and the hook is opened by electrically operating the electric opening / closing hook device from the cockpit, I was unloading my luggage. This transportation method was the same whether the destination of unloading was on the ground or on the sea or in the sea.

[Problems to be solved by the device]

However, when loading a load on the surface of the sea or in the sea (for example, a concrete block or a wave-dissipating block), the electric open / close hook device is often exposed to seawater, and the electric cable is corroded by the seawater. The hook device cannot be used. A method of suspending a load with an electric opening and closing hook device using a long wire to prevent the hook device from being exposed to seawater has been attempted, but when the load is opened to a predetermined place, that is, when the hook device is opened, The wire may bounce and the luggage may move. In the case of the former, the worker who is swimming at the sea surface or in the sea is exposed to a great risk, and in the case of the latter, it is re-installed, that is, unloading is performed again and position adjustment work is performed. I have to Both of these lead to a large delay in the work schedule, which is a major cause of increasing the difficulty of work at sea and underwater.

Further, although the problem of corrosion is reduced, the above-mentioned problem is basically the same in the unloading work on or under water.

Therefore, an object of the present invention is to provide a suspension device capable of accurately positioning the lowering place and improving work safety.

[Means for Solving the Problems]

A suspension device according to the present invention includes a hook device including two arm members that are axially supported by each other and that are in a hook opened or hook closed state by their pivoting motions, and first and second hook devices connected to the hook device. And a third rope member, the first and second rope members are connected to a position that biases the arm member in the hook closing direction in a tensioned state, and the third rope member is A suspension device that is connected to a position that urges the arm member in a hook open state in a tensioned state, and the first and second rope members are connected to a balance member at an upper portion, The member is connected to the third rope member via a fourth rope member having a predetermined length.

[Action]

When the hook device is suspended by the first and second rope members by the above means, the hook device is brought into the hook closed state. On the other hand, when the hook device is hung only by the third rope member, the hook device is in the hook open state. Therefore, the opening / closing of the hook device can be mechanically controlled by controlling the tension states of the first, second and third rope members. Since no electrical parts or cables are used, there is no possibility of opening and closing control failure due to corrosion. The balance member can prevent the first rope member and the second rope member from being entangled with each other at the time of hanging or moving, so that lifting and hanging operations can be performed more safely.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing a state of suspending a load according to an embodiment of the present invention, and FIG. 2 is a diagram showing a state of separating a load. First
In FIG. 2 and FIG. 2, reference numeral 10 is, for example, a load such as a steel plate, a concrete block, and a wave-dissipating block, and a latch 10A for hanging is provided on the upper portion. 12
, Which will be described in detail later, is a hook device that can be opened and closed by operating a wire.
Engage with the latch 10A. The hook device 12 is made of corrosion resistant steel. 14 includes two hooks 14A and 14B, at least the hook 14A is a double hook device that can be opened and closed by remote control (for example, electric control), and 16 is a universal joint device that indicates the double hook device 14. ,
It is suspended by a sling wire 18 from a helicopter (not shown).

Reference numerals 20 and 22 denote support wires for lifting the hook device, that is, the luggage 10 when the hook device 12 is closed, and 24 are open wires for opening the hook device 12, and the hook 14B is connected by the connecting fitting 26 at the upper end. Is engaged with. The support wires 20 and 22 are connected to both ends of the balance plate 32 by connecting fittings 28 and 30, respectively, and a short wire 38 is connected to a fixing fitting 34 fixed to the center of the balancing plate 32 via a connecting fitting 36.
The other end of the wire 38 is connected to the connecting fitting 26. Balance plate
32 is a wire 20 and a wire 22 when the hook device 12 is suspended.
It is provided to prevent entanglement.

The wire 38 is about 50 cm in this embodiment, and when the connecting fitting 36 is hooked on the hook 14A as shown in FIG.
The open wire 24 is loosened and the support wires 20, 22 are tensioned to lift the hook device 12 so that the hook device 12 is closed and also as shown in FIG.
With the connecting fitting 36 separated from A, the supporting wires 20 and 22 are loosened, the open wire 24 is tensioned, and the hook device 12 is lifted, so that the hook device 12 is opened.
The length is set to 2,24,38.

Next, the hook device 12 will be described in detail. 3A is a front view of the hook device 12 in a closed state, FIG. 3B is a bottom view of the hook device in a closed state, FIG. 4A is a front view of the hook device in an open state, and FIG.
The figure is a bottom view in the opened state. However, in order to facilitate understanding, only the opening / closing portion of the hook device 12 is shown in FIGS. 3B and 4B. 40 is a right arm and 42 is a left arm. Both arms 40 and 42 are basically Y-shaped, and the right arm 40 is curved to the left at the lower end of the Y-shaped vertical bar portion. The left arm 42, on the other hand, is curved to the right. The arms 40 and 42 are axially supported by a center pin (or bolt) 44 that is inserted through a hole in the center of the Y-shape. Due to the bending of the Y-shaped vertical bars of both arms 40, 42, the hook device 12 is closed (3A
In the figure), a space is formed between the arms 40 and 42, and the metal fittings and wires of the luggage 10 can be hung on the space.

Both arms 40 and 42 have basically the same shape, and reinforcing members 46 and 48 made of angle members are attached to the outer side surfaces of the arms 40 and 42 to prevent deformation of the arms 40 and 42. Further, 50 is a stopper that abuts the tip surfaces of the arms 42, 40 in a state where the hook device 12 is closed and stops the counterclockwise rotation of the arm 42 about the center pin 44, and 52 is Similarly,
It is a stopper that abuts against the tip surface of the arm 40 and stops the rotation of the arm 40. Stoppers 50 and 52 are arm 4 respectively
It is fixed to the inside of the side at the tip of 0,42. 54 and 56 are reinforcing materials for the stoppers 50 and 52, respectively.

Of the two shoulders 40A, 40B extending diagonally above the right arm 40, a pin 58 such as a bolt is passed through the tip of the shoulder 40A extending toward the left arm 42, and the support wire 20 is attached to the pin 58. is there. Similarly, the two shoulders of the left arm 42
Of the 42A and 42B, the pin 60 is driven into the tip portion of the shoulder portion 42A extending toward the right arm 40, and the support wire 22 is attached to the pin 60.
Is attached. That is, the hook device 12 is supported by the wires 20, 22 at the pins 58, 60. Connection levers 66, 68 are rotatably connected by shafts 62, 64 to the distal end portions of the other shoulder portion 40B of the right arm 40 and the other shoulder portion 42B of the left arm 42, respectively. The shafts 68 are rotatably connected to each other by a shaft 70. The opening wire 24 is attached to the shaft 70.

The lengths of the connecting levers 66, 68 are set so that the shaft 70 is below the line connecting the shafts 62, 64 when the hook device 12 is in the closed state (FIG. 3A). This is because when the shaft 70 is located on or above the line connecting the shafts 62 and 64 from the beginning, the arms 40 and 42 easily move in the opening direction due to the vibration of the hook device 12. For this reason, it is preferable to provide some play between the connecting levers 66, 68 and the shafts 62, 64, 70. Arms 40, 42 and connecting levers 66, 68
Is very heavy, so that when the shaft 70 is located below the line connecting the shafts 62 and 64 in the closed state of the hook device 12, even if some vibration is applied to the hook device 12, the shaft 70 is affected by the vibration. The possibility of crossing the line is extremely low, and therefore the hook device 12 is prevented from being opened accidentally.

In such a configuration, the hook device 12 is formed by the wires 20, 22.
With both arms suspended when the wire 24 is loose.
40 and 42 rotate about the center pin 44 in the closing direction of the hook device 12, and the shaft 70 rotates the both arms 40 and 42, as well as the arms 40 and 42 and the connecting levers 66 and 68. By weight,
As shown in FIG. 3A, it falls below the line connecting the shafts 62 and 64 and stabilizes.

In this state, when the wire device 24 supports the hook device 12 and loosens the wires 20 and 22, the shaft 70 is pulled up by the wire 24 (or the hook device 12 itself is lowered by its own weight),
Axis 70 rises above the line connecting axes 62,64. As a result,
The connecting levers 66 and 68 pull the shafts 62 and 64, that is, the shoulders 40B and 42B toward each other, and the right arm 40 rotates counterclockwise about the center pin 44 and the left arm 42 rotates clockwise. Move. In this way, the hook device 12 is in the open state shown in FIG. 4A.

Next, a method of using the illustrated embodiment will be briefly described. First,
The hook device 12 is hung on the luggage 10 on the ground to manually close the hook device 12, and is suspended from the helicopter, and is connected to the table hook device 14 to connect the opening wire 24 and the supporting wire 38. Hang 26 on hook 14B, and hook fitting 36 on hook 14A. Then, when the helicopter is slowly lifted, the hook device 12 is lifted by the wires 20 and 22, and as a result, as described above, the hook device 12 is closed by its own weight and the load 10 is hung. Will be able to. Hook device
With the 12 completely closed, lift the luggage 10 and carry it to the destination.

When arriving at the destination, the luggage 10 is suspended and lowered to a target position such as on the surface of the water or underwater, and the worker on the surface of the water or underwater evacuates from the site with the installation position fixed, and then from the helicopter. The hook 14A is opened by remote control. Then, the connecting fitting 36 is released from the hook 14A,
The hook device 12 is in turn supported by the wire 24 at the portion of the shaft 70. The balance plate 32 and the wires 20 and 22 are held by a supporting wire 38. Since the wires 20, 22 are loosened and the hook device 12 is supported by the wire 24, as described above, the hook device 12 is opened and the state shown in FIG. 2 is obtained.

When opening the hook 14A, the hook device 12 descends by a distance corresponding to the length of the opening wire 24 and the movement of the shaft 70 of the hook device 12, but the hook device 12 is hung like a conventional example. Since the wire does not bounce and bounce, the danger is significantly less for workers at sea level. Further, in the present embodiment, when the hook 14A is opened, the positional displacement of the luggage 10 is small, so that the operator does not need to hold the luggage 10 continuously, and can retreat to a sufficiently safe place.

Further, in the present embodiment, the hook device 12 is opened by releasing the wires 20 and 22, but the wires 20 and 22 are hung at the same position, and the wire 24 is raised by a predetermined amount, so that the wires 24 are relatively moved. The hook device 12 may be opened. That is, as the wire 24 is pulled up, the wire 24 gradually becomes tense, pulling up the shaft 70 and simultaneously
Gradually loosens, and as a result, the hook device 12 is opened.
In this case, since the height of the hook device 12 itself hardly changes, the height of the luggage 10 does not change, and therefore, the luggage 10 does not change.
The worker does not need to hold the baggage 10 in order to prevent the position movement, and the worker can evacuate to a place sufficiently distant from the baggage 10, thereby further improving the work safety. However, a mechanism for pulling up the wire 24 is required, and the part of the double hook device 14 is complicated. As yet another method, the hook 14A is slowly lowered relative to the hook 14B, whereby the load of the hook device 12 is gradually transferred from the wires 20, 22 to the wire 24, and thus the hook device 12 is moved.
The hook may be opened.

In the above description, the case of unloading the luggage on the water surface or in the water is taken as an example, but it should be understood that the same can be applied to the case of unloading the luggage on the ground in terms of ensuring the safety of the operator. In addition, although the above-mentioned embodiment is an example of carrying luggage by a helicopter, the present invention can be applied not only to the present invention but also to a crane on a sea construction platform, on the ground, or on a ship. In other words, the present invention is particularly suitable for unloading work in an environment in which an electric opening / closing hook device cannot be placed near a load, and it is necessary to gently load and unload not only gravitational objects as load to be worked. There is a thing with.

[Effect of device]

As can be easily understood from the above description, according to the present invention, it is possible to quickly unload the luggage without endangering the worker at the unloading place. Further, since the whole is made of mechanical parts, the function is not impaired even when working at sea or water as in the case of electric parts. Since it becomes difficult for the luggage to laterally move irregularly when unloading, it is extremely effective for the work of unloading heavy objects to a predetermined position.

[Brief description of drawings]

FIG. 1 is a view showing a state in which a load is lifted according to an embodiment of the present invention, FIG. 2 is a view showing a state in which the load is separated, and FIG. 3A is a front view of the hook device 12 of FIG. 1 in a hook closed state. , First
3B is a partial bottom view of the hook device 12 in a closed state, FIG. 4A is a front view of the hook device 12 in a hook open state, and FIG. 4B is a partial bottom view of the hook device 12 in a hook open state. . 10 ... luggage, 12 ... hook device, 14 ... double hook device,
16 ... Universal joint device, 18 ... Sling wire, 20,22 ... Support wire, 24 ... Opening wire, 28,30 ...
Connection fitting, 32 ... Balance plate, 34 ... Fixing fitting, 36 ... Connection fitting,
38 ... Support wire, 40 ... Right arm, 40A, 40B ... Shoulder, 42
... Left arm, 42A, 42B ... Shoulder, 44 ... Center pin, 4
6,48… Reinforcement material, 50,52… Stopper, 54,56… Reinforcement material, 5
8,60… Pin, 62,64,70… Shaft, 66,68… Connecting lever

Claims (2)

[Scope of utility model registration request] 1. A hook device comprising two arm members which are pivotally supported with respect to each other and which are brought into a hook opened state or a hook closed state by their pivoting movements, and a first coupling connected to the hook device.
It is composed of a second and a third rope member, and the first and second rope members are connected to a position for biasing the arm member in the hook closing direction in a tensioned state, and the third and third rope members are connected. The rope member is a suspension device that is connected to a position that urges the arm member in a hook open state in a tensioned state, and the first and second rope members are connected to a balance member at an upper portion. The suspension device is characterized in that the balancing member is connected to the third rope member via the fourth rope member having a predetermined length. 2. A utility model registration further comprising a first locking member for locking the balance member and a second locking member for locking the third rope member and the fourth rope member. The suspension device according to claim (1).