JP2016097845A - Hook releasing structure with interlock and simultaneous lifeboat separation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hook releasing structure with an interlock capable of manually releasing the interlock more easily and surely in emergency.SOLUTION: The hook releasing structure 1A with the interlock includes a hook 4 having a locking projected part 4a, a hook pin 3 for pivotally supporting the hook 4 to be rotatable, a pair of side plates 2 for rotatably supporting the hook pin 3, a cam lever pin 5 directly/indirectly regulating the rotation of the locking projected part 4a with the hook pin 3 set as a basic shaft, and an interlock 6 forming a fitting structure with the cam lever pin 5 to regulate rotation in its peripheral direction, and is characterized in that the interlock 6 includes a lock member 7 forming a fitting structure with the cam lever pin 5, a support arm 8, an interlock pin 9, and a safety pin 10, the lock member 7 and the support arm 8 associatively operate in the loaded state of the safety pin 10, and the lock member 7 operates independently of the support arm 8 in the unloaded state of the safety pin 10.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a simultaneous disengagement device for a lifeboat provided in a ship, in which the operation of the interlock and the release thereof are automatically switched according to the load acting on the hook, and sufficient buoyancy acts on the hook. The present invention relates to a hook releasing structure with an interlock that can release a hook only and can easily and reliably release an interlock in an emergency, and a lifeboat simultaneous detachment device including the same.

First, a conventionally known hook release structure, a lifeboat simultaneous detachment apparatus including the same, and an operation mechanism thereof will be described in detail with reference to FIGS.
FIG. 12 is a conceptual diagram of a hook release structure and a lifeboat simultaneous detachment device according to the prior art. FIGS. 13 to 17 are side views showing a release process of the hook release structure according to the prior art.
As shown in FIG. 12, a pair of hook release structures 21 according to the prior art are provided on at least the bow side and the stern side of the lifeboat 16. These hook release structures 21 are connected to the operation unit 18 via the operation wire 19, and the hook release structure 21 provided in the lifeboat 16 is operated by operating the operation lever 20 of the operation unit 18. Can be released all at once and the suspension wire 15 can be detached.
In the case where an abnormality occurs in the hull and the occupant needs to evacuate, as shown in FIG. 12, after the lifeboat 16 is suspended by the suspension wire 15 and conveyed to the sea surface, the hook release structure 21 is provided. Are simultaneously released by operating the operating lever 20.
Further, if the suspension wire 15 is removed in a state where the lifeboat 16 has not landed on the water surface, the lifeboat 16 will fall on the water surface, which is extremely dangerous. For this reason, the hook release structure 21 according to the prior art is provided with the buoyancy detection means 22 on the bottom of the lifeboat 16, and only when the water landing state (buoyancy generation state) of the lifeboat 16 is detected. It has an interlock that enables operation. The lifeboat 16 includes a propulsion device 17 as necessary. Furthermore, a series of structures for releasing the lifeboat 16 by releasing the suspension wire 15 all at once from the state where the lifeboat 16 is suspended by hanging the suspension wire 15 on the pair of hook release structures 21 has been conventionally used. It is the simultaneous detachment device 24 which concerns on a technique.

Here, a process of detaching the suspension wire 15 from the hook release structure 21 according to the prior art will be described with reference to FIGS. 13 to 14 are side views showing an operation mechanism of the hook releasing structure according to the prior art. The same parts as those shown in FIG. 12 are denoted by the same reference numerals, and description of the configuration is omitted.
First, the hook release structure 21 according to the prior art will be described with reference to FIG.
The hook release structure 21 according to the prior art is disposed on the right and left side surfaces of the hook 4 having a hook-like portion 4b and a locking projection 4a formed on the vertical lower side thereof. A pair of side plates 2 and 2 (in FIG. 13, only the side plate 2 disposed on one side surface of the hook 4 is shown), while passing through the hook 4 and the pair of side plates 2 and 2. A lock piece 13 for restricting the rotational movement of the locking projection 4a based on the hook pin 3 while forming a fitting structure with the hook pin 3 to be inserted and the locking projection 4a of the hook 4; A lock piece pin 23 that pivotally mounts the lock piece 13 on the side plates 2 and 2, and a lock piece pin 23 of the lock piece 13 that supports the lock piece 13 by contacting with the peripheral edge of the lock piece 13 in the vertical direction. The It is constituted by a Kamurebapin 5 for restricting the rotation operation to the shaft. In the hook release structure 21 according to the prior art, neither the hook pin insertion hole 2a ₂ formed in the side plate ₂ nor the hook pin insertion hole 4e ₁ formed in the hook 4 is a long hole.
Further, the side plate 2 includes a link stopper 11. The link stopper 11 is attached to the side plate 2 so as to be rotatable about a link stopper pin 12 as a base shaft. The link stopper 11 is provided with a weight 11a made of a metal lump at the vertical lower end thereof, and the link stopper 11 is tilted clockwise around the link stopper pin 12 (direction indicated by symbol P in FIG. 13). After the suspension wire 15 is hooked on the hook-like portion 4b of the hook 4, the link stopper 11 is automatically returned to the position shown in FIG. 13 as a result of being tilted counterclockwise by the action of the weight 11a. The suspension wire 15 is prevented from coming off.
The pair of side plates 2 and 2 are erected on the upper surface of the deck plate 14, for example.

Then, when the suspension wire 15 is hooked on the hook release structure 21 as described above and the lifeboat 16 is suspended as shown in FIG. 12, the hook release structure 21 is viewed from the side. FIG.
Note that the hook 4 is formed by molding a thick metal plate body, and has a wide portion 4d that functions as a weight in its body portion, so that when the external force does not act on the hook 4, the hook portion 4b A state where the tip is directed vertically upward (see FIG. 17 described later) is the most stable state. The hook 4 is provided with a stopper 4c on the periphery thereof. When the hook 4 is rotated clockwise around the hook pin 3, the hook 4 is provided on the stopper 2b protruding from the side plate 2. The rotation operation of the hook 4 is stopped by catching the stopper 4c.
As shown in FIG. 13, in a state where the hanging wire 15 is hooked on the hook 4 and a load is applied, the hook 4 always receives a force to rotate clockwise around the hook pin 3. It is working. However, the locking protrusion 4a of the hook 4 on which such a rotational force is acting is regulated in its rotation by forming a fitting structure with the lock piece 13, and the lock piece 13 Since the pivoting movement is restricted by the cam lever pin 5, the hook 4 does not pivot clockwise around the hook pin 3 in the state shown in FIG.

When the lifeboat 16 shown in FIG. 12 lands on a water surface (not shown), little or no load is applied to the hook 4 due to the influence of buoyancy.
In this case, as shown in FIG. 14, the contact state between the locking projection 4 a and the lock piece 13 in the fitting recess 13 a of the lock piece 13 is released. In other words, a force for rotating the lock piece 13 counterclockwise about the lock piece pin 23 as a base axis does not work, or the force acting in this way is greatly reduced. As a result, the cam lever pin 5 that is pressed by the lock piece 13 and cannot be rotated can be rotated.
Then, from this state, as shown in FIG. 15, the lever 5 a of the cam lever pin 5 is operated to rotate the cam lever pin 5 in the circumferential direction (counterclockwise direction) to form the body of the cam lever pin 5. When the notch 5b to be formed is arranged directly below the lock piece 13, as shown in FIG. 16, the lock piece 13 loses its support and rotates counterclockwise around the lock piece pin 23 (the solid line in FIG. 16). The lock projection 13 of the hook 4 is released from the fitting recess 13a of the lock piece 13 as the lock piece 13 rotates (see FIG. 16). (See the hook 4 indicated by the solid line portion.) The hook 4 rotates clockwise around the hook pin 3 as shown in FIG. 17, and the hanging wire 15 is detached from the hook 4 as shown in FIG.
In the hook release structure 21 according to the prior art, in a state where sufficient buoyancy is not acting on the lifeboat 16 (for example, when the buoyancy acting on the lifeboat 16 is not stable due to a high water wave). Since it is dangerous if the hook release structure 21 is released, the buoyancy detection means 22 as shown in FIG. 12 is provided, and the buoyancy detection means 22 applies sufficient buoyancy to the lifeboat 16. Only when it is detected, the operation lever 20 of the operation unit 18 can be operated.
That is, in the lifeboat simultaneous detachment device 24 according to the prior art, the buoyancy detection means 22 functions as an interlock of the hook release structure 21.

Such a hook release structure 21 according to the prior art needs to include a structure (for example, buoyancy detection means 22) that functions as an interlock separate from the hook release structure 21. In this case, since the number of parts related to the lifeboat simultaneous detachment device 24 is increased, the manufacturing cost is high, and the maintenance for each of them is troublesome and complicated. Further, when the buoyancy detection means 22 is provided, the buoyancy detection means 22 may protrude into the area where the personnel of the lifeboat 16 enter, and there is an obstacle in the lifeboat 16 for emergency evacuation. It was dangerous.
Therefore, in the hook release structure 21 according to the prior art as shown in FIG. 12, a structure corresponding to the buoyancy detection means 22 (interlock) is required to be integrated in the hook release structure 21.
As a prior art related to the present invention, for example, Patent Document 1 as shown below is known.

Patent Document 1 describes a lifeboat that can release a hook only when an artificial operation is performed with sufficient buoyancy acting on the hull. A device relating to the simultaneous detachment device is disclosed.
The lifeboat simultaneous detachment device disclosed in Patent Document 1 will be described using the reference numerals described in Patent Document 1 as they are, and the hook (1) having a gradient on the lower inner side and the eye plate fixed to the bottom of the hull (2) with a bolt and a side plate provided with an upper elongated hole and a lower elongated hole on the central side surface, a guide plate (5) to which the pin (4) is fixed and an elongated hole is formed on the central side surface, and a pin (6 ) And a guide roller (9) around the pin (8) connecting the hook (1) and the side plate (3), and the rope (10). Guide roller (11) having a tensioning device, guide rollers (12), (12 ') for guiding the rope (10) from the front and rear of the boat to the center of the boat, and the center via the guide roller (13) Bolt with roller (14 ), A rope cover (15) having a long hole on one side, or a stopper pin (16) inserted into the rope cover (15) so that the bolt (14) with roller is not pulled out, and the rope (10) Protective covers (17), (17 ′), (17 ″).
According to the lifeboat simultaneous detachment device disclosed in Patent Document 1 having the above configuration, it is possible to provide a lifeboat simultaneous detachment device that has a simple mechanism, is lightweight, and can be operated with a slight manual force. .

Microfilm of Japanese Utility Model No. 51-147671 (Japanese Utility Model Publication No. 53-64497)

In the case of the idea disclosed in Patent Document 1 as described above, the guide plate (5) is pushed vertically upward by the pin (6) penetrating the weight (7) suspended by the rope (10). Even if the pin (4) is always pushed up indirectly by the plate (5), even if the buoyancy acts on the boat and the pressing force of the pin (4) by the hook (1) momentarily becomes zero, The pin (4) can be prevented from falling vertically downward and the hook (1) being released. Therefore, according to the device disclosed in Patent Document 1, it is considered that an interlock is built in the release mechanism of the hook (1).
However, in the case of the idea disclosed in Patent Document 1, when the rope (10) breaks unintentionally for some reason, the hook (1) is released immediately, so that safety is sufficiently ensured. There was a problem that was not done.
Conversely, when the rope (10) is stuck or the weight (7) is stuck, the hook (1) is released manually even if sufficient buoyancy acts on the lifeboat due to its structure. There was a problem that could not be done. In this case, there is a possibility that the lifeboat is suspended by only one pair of hooks (1), which is extremely dangerous for the occupant, so that sufficient safety is not guaranteed. There was a problem.
Furthermore, in the case of the invention disclosed in Patent Document 1, the rope (10) is periodically used in order to avoid the occurrence of the above-described problems (for example, the rope (10) breaks unintentionally for some reason). However, when the rope (10) is replaced, depending on the type of the rope (10) used, the length of the rope (10) is uniform on the bow side and the stern side due to its elongation. It is expected not to be. This means that the timing at which the hook (1) is released is not the same between the bow side and the stern side. For this reason, in order to realize simultaneous detachment at the fore and aft, it is necessary to adjust the length of the rope (10) in a short cycle, and there is a problem that the work is complicated and the cost for maintenance is high. .

  The present invention has been made in response to such a conventional situation. An interlock is built in the hook release structure, and the performance of the interlock is very unlikely to deteriorate with time, and maintenance is easy. Another object of the present invention is to provide a highly safe hook release structure with an interlock that can be easily and surely released by manual operation in an emergency, and a lifeboat simultaneous release device using the same.

In order to achieve the above object, the hook release structure with an interlock according to the first aspect of the present invention is provided on each of the hooks provided with locking projections on the vertically lower side of the hook-shaped portion and the left and right side surfaces of the hook. A pair of side plates provided, a hook pin inserted through the hook and the pair of side plates, and a cam lever pin that directly or indirectly regulates the pivoting movement of the locking projection based on the hook pin. And an interlock that restricts the rotational movement of the cam lever pin in the circumferential direction. The interlock forms a fitting structure in the body portion of the cam lever pin to restrict the circumferential rotation of the cam lever pin. A lock member, a support arm that moves the lock member up and down in synchronization with the vertical movement of the hook pin, an overlapping portion of the lock member and the support arm, and a pair of side plates. And a safety pin that is inserted through the overlapping portion of the lock member and the support arm and restricts the rotation of the lock member based on the interlock pin. The hook pin insertion holes drilled in the pair of side plates for insertion are long holes, and both of the interlock pin insertion holes drilled in the overlapping portion of the lock member and the support arm for insertion of the interlock pin are both It is a long hole.
In the first aspect of the present invention, the hook has an action of hooking and holding a suspension wire for hanging and holding the lifeboat. Further, the pair of side plates have an action of rotatably supporting the hook pin, the cam lever pin, and the interlock pin. In particular, the hook pin insertion hole through which the hook pin is inserted in the pair of side plates is formed as a long hole, so that the hook pin can be moved vertically in the hook pin insertion hole.
As a result of this action, the hook can also move vertically along with the hook pin (however, its movable range is within the movable range of the hook pin). Further, the hook pin has an effect of pivotally supporting the hook so as to be rotatable.
In the state where the hanging wire is not hooked on the hook, the state where the tip of the hook-shaped portion is directed vertically upward is the most stable state. When the hook is in this stable state, the hanging wire that is hooked and held on the hook-shaped portion of the hook is released from the hook.
Further, the cam lever pin has a function of forming a contact state directly or indirectly with the hook locking projection and restricting the pivoting movement of the hook with the hook pin as a base shaft. Specifically, when the contact state between the cam lever pin and the locking projection is maintained, the turning operation of the hook is restricted. On the other hand, when the cam lever pin is rotated in the circumferential direction around its central axis, and the direct or indirect contact state between the cam lever pin and the hook locking projection is released, the hook rotates. .
When the interlock is to form a fitting structure at a desired portion of the body of the cam lever pin, the interlock performs a rotation operation (rotation operation of the cam lever pin in the circumferential direction) with the central axis of the cam lever pin as a base axis. Has the effect of regulating. Moreover, when the fitting structure of the cam lever pin and the interlock is not formed, the cam lever pin can be rotated.
Furthermore, in the interlock described in claim 1, the lock member has an action of forming a fitting structure with the cam lever pin as required. The support arm is connected to the lock member via a safety pin and an interlock pin, and has an action of moving the lock member up and down in the vertical direction in synchronization with the vertical movement of the hook pin.
That is, with the vertical movement of the lock member in the vertical direction, a fitting structure is formed or not formed between the lock member and the cam lever pin. Further, the lock member and the support arm have an overlapping portion. And an interlock is provided with the interlock pin inserted by penetrating through the overlap part of these (lock member and support arm) and a pair of side plates, and a lock member rotates centering on an interlock pin. Supported as possible.
In addition, by making the interlock pin insertion holes drilled in each of the lock member and the support arm in order to insert the interlock pin into a long hole, when the hook pin moves up and down in the vertical direction, it synchronizes with the operation Then, the support arm and the lock member connected thereto move up and down in the vertical direction. By this operation, a fitting structure is formed or not formed between the cam lever pin and the lock member.
Further, the safety pin is detachably inserted into the overlapping portion of the support arm and the lock member, and in a state where the safety pin is inserted, the support arm and the lock member are moved up and down in the vertical direction in synchronization. On the other hand, when the safety pin is removed, the lock member does not interlock with the movement of the support arm, and the lock member rotates by its own weight with the interlock pin as a base shaft. At this time, the lock member remains separated from the cam lever pin, the fitting structure is not formed, and the cam lever pin can be rotated.

The hook release structure with an interlock according to the second aspect of the present invention includes a hook having a locking projection on a vertically lower side of the hook-shaped portion, and a pair of sides disposed on both the left and right side surfaces of the hook. A plate, a hook pin inserted through the hook and the pair of side plates, a cam lever pin that directly or indirectly restricts the pivoting movement of the locking projection with the hook pin as a base shaft, and the periphery of the cam lever pin An interlock that regulates the pivoting movement in the direction, and the interlock forms a fitting structure in the body of the cam lever pin to regulate the pivoting in the circumferential direction, and the lock A support arm that moves the member up and down in synchronization with the vertical movement of the hook, and an interlo that is inserted while passing through the overlapping portion of the lock member and the support arm and the pair of side plates. And a safety pin that is inserted through the overlapping portion of the lock member and the support arm and restricts the rotation of the lock member based on the interlock pin, and is attached to the hook to allow the hook pin to pass therethrough. The hook pin insertion hole to be drilled is a long hole, and the peripheral edge on the vertical upper side of the hook pin insertion hole is provided with a support arm locking portion protruding on the left and right side surfaces of the hook, and allows the interlock pin to be inserted. Therefore, both of the interlock pin insertion holes formed in the overlapping portion of the lock member and the support arm are long holes, and the support arm is hooked and held on the support arm locking portion. is there.
The invention described in claim 2 of the above-described configuration is the same as that described in claim 1, except that the hook pin is moved in the vertical direction in the hook pin insertion hole while the hook pin is not moved (however, the clearance The vertical movement within the range is not included in the vertical movement.) The hook is moved up and down in the vertical direction. Furthermore, the interlock is configured to move up and down in the vertical direction in synchronization with the vertical movement of the hook.
Therefore, in the invention described in claim 2, in the invention described in claim 1, the hook pin drilled in the hook is used instead of making the hook pin insertion hole drilled in the pair of side plates long. The insertion hole is a long hole. In this case, the hook pin does not move, but the hook can be moved vertically in the range of the hook pin insertion hole.
In this case, since the hook pin does not move up and down in the vertical direction, the interlock cannot be moved up and down in the vertical direction. For this reason, in the invention described in claim 2, support arm locking portions that protrude on the left and right side surfaces of the hook are formed on the peripheral edge on the vertical upper side of the hook pin insertion hole formed in the hook, By hooking a hook pin insertion hole drilled in the support arm to the support arm locking portion, the interlock moves vertically in synchronization with the vertical movement of the hook in the vertical direction. . In addition, since the support arm locking part is formed only on the vertical upper side of the periphery of the hook pin insertion hole of the hook, the support arm is automatically dropped from the hook when the hook rotates around the hook pin. The support arm does not rotate in conjunction with the rotation operation of the hook, and the rotation operation of the hook is not hindered by the support arm.
In addition, about the effect | action by members other than the above, it is the same as the effect | action of each member of Claim 1.

The invention according to claim 3 is the hook release structure with an interlock according to claim 1 or 2, wherein a lock piece is interposed between the hook locking end and the cam lever pin, The end portion for use and the lock piece form a second fitting structure, the lock piece is pivotally supported by an interlock pin, and the cam lever pin regulates the rotation operation of the lock piece. It is a feature.
In addition to the same action as that of the invention described in claim 1 or 2, the lock piece interposed between the hook locking end and the cam lever pin is By forming the hook engaging end portion and the second fitting structure, there is an effect that the pivoting operation of the hook is reliably restricted when necessary.
Further, when the lock piece is in contact with the hook engaging end, the torque acting on the hook is transmitted to the cam lever pin, and the cam lever pin is rotated using the torque acting on the hook. It has the effect of regulating indirectly.

According to a fourth aspect of the present invention, there is provided a lifeboat simultaneous detachment device, a lifeboat, and at least two hook release structures with an interlock according to any one of the first to third aspects, provided on the lifeboat. And an operation section for simultaneously rotating the cam lever pins in the hooks with interlocks.
In the invention according to claim 4 configured as described above, the lifeboat has an action of evacuating personnel from the boat when the boat becomes unable to navigate. Moreover, the hook release structure with an interlock has the same action as that of each of the first to third aspects. Furthermore, the operation unit has an action of simultaneously rotating the cam lever pins in all the hooks with interlocks.

In the hook release structure with an interlock according to claims 1 and 2 of the present invention, when a load is applied to the hook, the interlock (lock member and support arm) is provided together with the hook and the hook pin that supports the hook. Pulled upward vertically, a fitting structure is formed between the lock member and the cam lever pin, and the turning operation of the cam lever pin is restricted. As a result, the cam lever pin and the hook locking protrusion are in direct or indirect contact with each other, and the pivoting movement of the hook is restricted. That is, when a load due to the suspension is applied to the hook, the hook cannot be released and the suspension wire hooked on the hook cannot be detached.
On the other hand, when buoyancy is applied and no load is applied to the hook, or when the load applied to the hook is sufficiently small, the hook and the hook pin that supports it, and the interlock move downward in the vertical direction, The fitting structure by the lock member and the cam lever pin is not formed, and the cam lever pin can be rotated. At this time, when the cam lever pin is artificially rotated, the direct or indirect contact state between the cam lever pin and the hook locking projection is released, and the hook rotates. That is, in a state where sufficient buoyancy is acting on the hook, the hook can be released and the hanging wire hooked on the hook can be detached.
Further, even when a fitting structure is formed between the lock member constituting the interlock and the cam lever pin, that is, even when the rotation operation of the cam lever pin is restricted by the interlock, the safety pin By removing the, the restriction of the rotation operation of the cam lever pin by the lock member can be released. In this case, by removing the safety pin, the lock member rotates by its own weight about the interlock pin, and the lock member is separated from the cam lever pin. As a result, the restriction of the rotation operation of the cam lever pin is released. The If sufficient buoyancy is applied to the hook, the cam lever pin can be artificially rotated. In this case, the interlock can be forcibly released manually, and the suspension wire that is hooked on the hook can be released.
According to the first and second aspects of the invention, the interlock operating state is automatically switched according to the magnitude of the buoyancy acting on the hook. Moreover, since the interlock in the inventions of claims 1 and 2 is composed of a combination of metal parts having a sufficient rigidity, the weather resistance is excellent, and further, deterioration due to aging (for example, Deformation such as elongation) and functional deterioration (for example, mismatch in timing of detachment of the suspension wire) hardly occur, and maintenance is easy.
In addition, the interlock according to the first and second aspects of the invention has a very simple structure, so that it is unlikely to malfunction or break, and greatly increases the safety and reliability when used in a lifeboat simultaneous release device. Can be improved.
Further, in the inventions of claims 1 and 2, the interlock is composed of two members, a lock member and a support arm, and these overlapping portions are pivotally supported by the interlock pin and the safety pin. The lock member and the support arm can be operated as a single unit as necessary, or can be operated independently.
That is, in a state where the safety pin is attached to the overlapping portion of the lock member and the support arm, the lock member moves up and down in the vertical direction in synchronization with the vertical movement of the support arm. On the other hand, in a state in which the safety pin is removed, the lock member rotates with the interlock pin as a base shaft by its own weight and moves away from the cam lever pin regardless of the movement of the support arm. That is, the fitting structure is not formed between the cam lever pin and the lock member, and as a result, the restriction of the rotation operation of the cam lever pin in the circumferential direction by the lock member is released.
As described above, in the first and second aspects of the invention, not only the operation state of the interlock is automatically switched according to the state of buoyancy, but also the interlock is operated by a simple manual operation when necessary (in an emergency). It can be easily and reliably released.
In this case, even if a malfunction occurs in the interlock operating mechanism in the inventions described in claims 1 and 2, the interlock cannot be released and the suspension wire cannot be detached from the hook. Such a situation can be surely prevented.
Therefore, the safety when using the inventions according to claims 1 and 2 can be further improved.

In addition to the same invention as the invention described in claim 1 or 2, the invention described in claim 3 includes a lock piece interposed between the hook locking protrusion and the cam lever pin. Stability when holding the locking projection is improved.
As a result, a more reliable and safe hook release structure with an interlock can be provided.

According to the fourth aspect of the present invention, the hook can be released only when sufficient buoyancy is applied to the interlocked hook releasing structure, and simple manual operation can be performed when necessary (emergency). It is possible to provide a high-performance lifeboat simultaneous detachment device that can easily and surely release the interlock by operation.
In other words, according to the lifeboat simultaneous detachment device according to claim 4, a failure occurs in any of the hook release structures with an interlock provided in the lifeboat, and sufficient buoyancy acts on the hook release structure with an interlock. However, when the interlock is not released, the interlock can be reliably released by a simple human operation, so that the lifeboat can be safely and reliably detached from the ship.

It is a conceptual diagram of the hook release structure with an interlock and lifeboat simultaneous detachment device concerning an embodiment of the invention. (A) It is a front view of the hook release structure with an interlock which concerns on embodiment of this invention. (B) It is a side view of the hook release structure with an interlock which concerns on embodiment of this invention. It is a perspective view which shows arrangement | positioning of the interlock and related parts which concern on embodiment of this invention. It is a side view which shows the action mechanism at the time of normal in the hook release structure with an interlock concerning an embodiment of the invention. It is a side view which shows the action mechanism at the time of normal in the hook release structure with an interlock concerning an embodiment of the invention. It is a side view which shows the action mechanism at the time of normal in the hook release structure with an interlock concerning an embodiment of the invention. It is a side view which shows the action mechanism at the time of normal in the hook release structure with an interlock concerning an embodiment of the invention. It is a side view which shows the action mechanism in the event of an emergency of the hook release structure with an interlock which concerns on embodiment of this invention. It is a side view of the hook release structure with an interlock which concerns on the modification of embodiment of this invention. (A) It is a side view of the hook which concerns on the modification of embodiment of this invention. (B) It is a front view of the hook which concerns on the modification of embodiment of this invention. It is a side view which shows the operating mechanism at the time of the normal of the hook release structure with an interlock which concerns on the modification of embodiment of this invention. It is a conceptual diagram of the hook release structure and lifeboat simultaneous detachment device concerning a prior art. It is a side view which shows the action | operation mechanism of the hook release structure which concerns on a prior art. It is a side view which shows the action | operation mechanism of the hook release structure which concerns on a prior art. It is a side view which shows the action | operation mechanism of the hook release structure which concerns on a prior art. It is a side view which shows the action | operation mechanism of the hook release structure which concerns on a prior art. It is a side view which shows the action | operation mechanism of the hook release structure which concerns on a prior art.

Hereinafter, a hook release structure with an interlock according to an embodiment of the present invention and a lifeboat simultaneous detachment apparatus using the same will be described in detail with reference to FIGS. 1 to 11.
The hook release structure with an interlock according to the present invention is improved by adding new parts to the hook release structure 21 according to the prior art shown in FIGS. 12 to 17 and changing the structure partially. Many of them are common to the parts constituting the hook release structure 21 according to the prior art. For this reason, here, the description will focus on the structural differences from the hook release structure 21 according to the prior art.

First, an outline of a hook release structure with an interlock according to the present embodiment and a lifeboat simultaneous detachment apparatus using the same will be described with reference to FIGS. 1 to 3.
FIG. 1 is a conceptual diagram of a hook release structure with an interlock and a lifeboat simultaneous detachment device according to an embodiment of the present invention. 2A is a front view of the hook release structure with an interlock according to the embodiment of the present invention, and FIG. 2B is a side view of the hook release structure with an interlock according to the embodiment of the present invention. FIG. Furthermore, FIG. 3 is a perspective view showing the arrangement of interlocks and related parts according to the embodiment of the present invention. The same parts as those described in FIGS. 12 to 17 are denoted by the same reference numerals, and description of the configuration is omitted.
As shown in FIG. 1, the lifeboat simultaneous detachment device 100 according to the present embodiment is provided on a lifeboat 16 provided with a propulsion device 17 as necessary, and at least on the bow side and the stern side of the lifeboat 16. The hook release structure 1A with an interlock that is integrally fixed to the lifeboat 16 and an operation unit 18 that includes an operation lever 20 for simultaneously rotating these cam lever pins 5 are configured. is there. An operation wire 19 is interposed between the cam lever pin 5 and the operation unit 18.
In such a lifeboat simultaneous detachment device 100, the lifeboat 16 is suspended and held by hooking the suspension wire 15 on the hook 4 in the hook release structure 1A with interlock, and in this state, the lifeboat is saved on the surface of the water. The boat 16 is transported.

Here, the structure of the hook release structure with interlock 1A according to the present embodiment will be described in comparison with the hook release structure 21 according to the prior art shown in FIG.
As shown in FIG. 2, the hook release structure with an interlock 1A according to the present embodiment is provided with an interlock 6, and a hook pin 3 that holds and holds the interlock 6, and is pivotally supported by the hook pin 3. The point that the hook 4 is configured to move up and down in the vertical direction with respect to the pair of side plates 2 is greatly different.
The detailed structure of the interlocking hook release structure 1A according to the present embodiment will be described in more detail with reference to FIGS.
As shown in FIG. 2, the hook release structure with interlock 1A according to the present embodiment mainly includes a hook 4 having a locking protrusion 4a on the vertically lower side of the hook-like portion 4b (as compared with the prior art of FIG. 13). Common), a pair of side plates 2 (common to the prior art of FIG. 13) disposed on the left and right side surfaces of the hook 4, and the hook 4 and the pair of side plates 2 while being inserted therethrough. 13 and the cam lever pin 5 that directly or indirectly regulates the pivoting movement of the locking protrusion 4a of the hook 4 using the hook pin 3 as a basic axis (the conventional technique of FIG. 13). And an interlock 6 (see FIG. 3) for restricting the rotational movement of the cam lever pin 5 in the circumferential direction.
Note that in the hook release structure with interlock 1A according to the present embodiment, the hook pin insertion hole 4e ₁ formed in the hook 4 is not a long hole.
Moreover, in this invention, the pin which supports other parts in this insertion hole by making the insertion hole for inserting a pin (for example, hook pin 3, interlock pin 9, etc.) into a "long hole" The pin itself can be moved as desired within the insertion hole. Alternatively, the part pivotally supported by the pin can be moved around the pin within the range of the insertion hole.
In addition, in this invention, although the case where a "long hole" is utilized as an example as a pin insertion hole which has the above actions is described as an example, if the same action can be exhibited, The form of the “long hole” is not necessarily specified as a long hole shape.
More specifically, instead of the “long hole”, a pin insertion hole having the same shape as the axial sectional shape of the pin and having a larger diameter may be used.

Further, the interlock 6 in the hook release structure with interlock 1A according to the present embodiment forms a fitting structure with the cam lever pin 5 in the body portion of the cam lever pin 5, as shown in FIGS. A lock member 7 that restricts the circumferential movement of the cam lever pin 5, a support arm 8 that moves the lock member 7 up and down in synchronization with the vertical movement of the hook pin 3, and the support arm 8 An interlock pin 9 (corresponding to the lock piece pin 23 in the prior art of FIG. 13) inserted while passing through the overlapping portion with the lock member 7 and the pair of side plates 2, and the interlock 6 and the support arm 8 The safety pin 10 is inserted through the overlapping portion and restricts the rotational movement of the lock member 7 with the interlock pin 9 as a basic axis. .
Furthermore, in the hook release structure with interlock 1A according to the present embodiment, as shown in FIG. 2, hook pin insertion holes 2a ₁ drilled in the pair of side plates 2 for inserting the hook pins 3 are elongated holes. Thus, the vertical movement of the hook pin 3 in the long hole is enabled. This means that the hook 4 pivotally supported by the hook pin 3 can also move up and down in synchronization with the vertical movement of the hook pin 3 in the vertical direction.
Although described in detail later, the hook pin 3 actually moves up and down in synchronization with the vertical movement of the hook 4 in the vertical direction.
At this time, the support arm 8 pivotally supported by the hook pin 3 also moves up and down in synchronization with the vertical movement of the hook pin 3 in the vertical direction.
Further, the lock member 7 is rotatably installed with the interlock pin 9 as a base shaft (see FIGS. 2 and 3), and is an overlapping portion of the lock member 7 and the support arm 8, and the interlock pin. By inserting the safety pin 10 at a position different from the insertion position 9, the pivoting operation of the lock member 7 around the interlock pin 9 is restricted, and the support arm 8 and the lock member 7 are Move up and down together.
Note that the interlocking between the support arm 8 and the lock member 7 can be released by removing the safety pin 10.

Further, as shown in FIGS. 2 and 3, in the hook release structure with an interlock 1 </ b> A according to the present embodiment, a hole is formed in an overlapping portion of the lock member 7 and the support arm 8 in order to insert the interlock pin 9. Both of the interlock pin insertion holes 7c and 8c are long holes.
In the hook release structure with interlock 1A according to the present embodiment, as shown in FIGS. 2 and 3, the interlock pin 9 is inserted through the support arm 8, but the interlock through which the interlock pin 9 is inserted is inserted. Since the pin insertion hole 8c is a long hole, the support arm 8 can be moved up and down in the vertical direction in synchronization with the vertical movement of the hook pin 3 in the vertical direction. If the interlock pin insertion hole 8c is not a long hole, the support arm 8 cannot be moved up and down in the vertical direction.
Similarly, since the interlock pin insertion hole 7c formed in the lock member 7 is also a long hole, the lock member 7 is also moved vertically in synchronization with the vertical movement of the support arm 8 in the vertical direction. Can do.

In addition, the interlocking hook release structure 1A according to the present embodiment, as shown in FIGS. 2 and 3, has a lock piece 13 (conventional FIG. 13) between the locking protrusion 4a of the hook 4 and the cam lever pin 5. May be common with technology). The lock piece 13 is pivotally supported by an interlock pin 9 so as to be rotatable.
As shown in FIGS. 2 and 3, the lock piece 13 includes a fitting recess 13 a, and the locking protrusion 13 a of the hook 4 is accommodated in the fitting recess 13 a so that the hook 4 And the pivoting operation about the hook pin 3 of the locking projection 4a is regulated.
Note that when the interlock-equipped hook releasing structure 1A according to the present embodiment includes the lock piece 13, this corresponds to the case where the rotation operation of the locking projection 4a is indirectly restricted by the cam lever pin 5. To do.
Further, although not particularly illustrated, in the hook release structure with interlock 1A according to the present embodiment, the cam lever pin 5 directly restricts the turning operation of the locking protrusion 4a of the hook 4 without using the lock piece 13. You can also In this case, a fitting structure may be formed between the cam lever pin 5 and the locking protrusion 4a of the hook 4. Such a case corresponds to a case where the pivoting operation of the locking projection 4a of the hook 4 is directly restricted by the cam lever pin 5.
In the present embodiment, the case where the lock piece 13 is provided is described as an example, and its operation and effect are described. However, even if the lock piece 13 is not provided, the same effect can be exhibited without any problem.

Here, the structure of the interlock 6 in the hook release structure with interlock 1A according to the present embodiment will be described in more detail with reference to FIG.
As shown in FIG. 3, the support arm 8 is composed of a pair of elongated flat plate-like support arm bodies 8a, and a hook pin insertion hole 8b ₁ for inserting the hook pin 3 into the vertical upper side thereof is provided at the vertical lower side thereof. Interlock pin insertion holes 8c (long holes) for inserting the interlock pins 9 are respectively formed. Incidentally, the hook pin insertion hole 8b ₁ are not long holes.
Further, as shown in FIG. 2, the support arm main body 8a is provided with a safety pin insertion hole 8d through which the safety pin 10 is inserted on the lower side in the vertical direction and in the vicinity of the periphery thereof. The safety pin 10 inserted into the safety pin insertion hole 8d needs to be inserted at a position where it can be easily inserted and removed manually from the outside of the hook release structure with interlock 1A. Therefore, the safety pin insertion hole 8d is formed at a position exposed from the side plate 2 when the support arm 8 is hooked on the hook pin 3. The same applies to the safety pin insertion hole 7e formed in the lock member 7.

Further, as shown in FIG. 3, the lock member 7 includes a pair of lock member main bodies 7 a disposed while forming an overlapping portion with a region on the vertically lower side of the support arm main body 8 a, and each lock member main body 7 a. It is comprised by the projection-shaped fitting end 7b extended in the horizontal direction, and the connection member 7d which connects the edge part of these fitting ends 7b and 7b integrally. The connecting member 7d for connecting the pair of fitting ends 7b, 7b constituting the lock member 7 also functions as a weight, and the lock member 7 is rotated around the interlock pin 9 as a base axis. When the operation is performed, the operation is ensured and smooth.
Further, the lock member 7 includes an interlock pin insertion hole 7c (long hole) for allowing the interlock pin 9 to be inserted through the body portion of the lock member main body 7a. The interlock pin insertion hole 8c drilled in the support arm main body 8a and the interlock pin insertion hole 7c drilled in the lock member main body 7a communicate with each other, but the interlock pin insertion hole 8c (long The hole drilling position and the interlock pin insertion hole 7c (long hole) drilling position need not be completely matched.
On the other hand, both the safety pin insertion holes 8d and 7e drilled in the support arm main body 8a and the lock member main body 7a for inserting the safety pin 10 are continuous perforations formed so that their drilling positions coincide with each other. In addition, the outer shape of the safety pin 10 is inscribed (including a case of being substantially inscribed) in the continuous drilling.
In this case, by inserting the safety pin 10 into the safety pin insertion holes 8d and 7e, the rotation operation of the lock member 7 based on the interlock pin 9 with respect to the support arm body 8a is regulated.

Further, with reference to FIG. 3, in the hook release structure with interlock 1A according to the present embodiment, a mechanism in which the rotation operation of the cam lever pin 5 in the circumferential direction is restricted by the interlock 6 will be described in detail.
As shown in FIG. 3, a notch 5 b is formed in the body portion of the cam lever pin 5. For this reason, when the cam lever pin 5 is rotated in the circumferential direction around the central axis thereof and the notch 5b is disposed directly below the lock piece 13, the cam lever pin 5 is placed on the cam lever pin 5 and locked to the cam lever pin 5. The lock piece 13 loses its support and falls in the notch 5b. That is, the lock piece 13 can be rotated about the interlock pin 9 as a base axis. In this way, the cam lever pin 5 can restrict the rotation of the lock piece 13 as desired.
Further, although not shown in FIG. 3, the cam lever pin 5 is provided with a fitting recess 7c for forming a fitting structure with the fitting end 7b of the lock member 7 in the body portion thereof, and a notch 5b. It is provided either integrally or separately (see FIG. 2 (a)). That is, the notch 5b and the fitting recess 5c formed in the cam lever pin 5 may be integrally formed or may be formed independently of each other.
As shown in FIG. 2, in the hook release structure with interlock 1A according to the present embodiment, the fitting end 7b of the lock member 7 is placed in the fitting recess 5c formed in the body portion of the cam lever pin 5. In the case of being accommodated, the rotation of the cam lever pin 5 in the counterclockwise direction is hindered, and as a result, the rotation of the lock piece 13 and the locking projection 4a is hindered. .

According to the hook release structure with interlock 1A according to the present embodiment as described above, the cam lever pin 5 moves in the circumferential direction only when sufficient buoyancy acts on the lifeboat 16 shown in FIG. Can be turned. Then, by operating the operation lever 20 of the operation unit 18 in this state, the suspension wire 15 can be released from the hook release structure with interlock 1A all at once.
Also, in the unlikely event that sufficient buoyancy is acting on the lifeboat 16, the lock member 7 of the interlock 6 does not move away from the cam lever pin 5, and the hook 4 is rotated to detach the wire 15. Even if this is not possible, according to the hook release structure with interlock 1A according to the present embodiment, the lock member 7 can be reliably separated from the cam lever pin 5 by a simple manual operation as will be described later.
As a result, even in an emergency, there is an original effect that the hanging wire 15 can be reliably detached from the hook release structure with interlock 1A.

Hereinafter, a process of detaching the suspension wire 15 from the hook release structure with an interlock 1A according to the present embodiment will be described in detail with reference to FIGS. 4 to 7.
4 to 7 are side views each showing a normal operation mechanism in the hook release structure with an interlock according to the embodiment of the present invention. The same parts as those described in FIGS. 12 to 17 and FIGS. 1 to 3 are denoted by the same reference numerals, and description of the configuration is omitted.
FIG. 4 shows the state in which the lifeboat 16 is suspended by the suspension wire 15 through the hook release structure 1A with an interlock (a state in which a load is applied to the hook 4) in FIG. It is the side view which expanded and showed hook release structure 1A.
As shown in FIG. 4, when the load of the lifeboat 16 is acting on the hook 4 of the hook release structure with interlock 1A, the hook 4 and the hook pin 3 inserted into the hook 4 are drilled in the side plate 2. a state that has moved to the upper end of the hook pin insertion hole 2a ₁ that.

In conjunction with the operation of the hook pin 3, the support arm 8 hooked and held on the hook pin 3 is also lifted vertically upward together with the hook pin 3.
At this time, since the safety pin 10 is inserted into the safety pin insertion holes 8d and 7e formed in the overlapping portion of the support arm 8 and the lock member 7, the lock member 7 is fixed to the support arm 8. Thus, the lock member 7 is pulled up vertically upward together with the support arm 8. That is, the fitting end 7 b of the lock member 7 is housed in the fitting recess 5 c of the cam lever pin 5. In this case, the cam lever pin 5 cannot be rotated in the circumferential direction because the fitting end 7b of the lock member 7 becomes an obstacle.
This means that in a state where a load is applied to the hook 4, the cam lever pin 5 cannot be rotated in the circumferential direction, and the hanging wire 15 cannot be released from the hook 4. .
That is, when the lifeboat 16 is suspended by the suspension wire 15, the cam lever pin 5 cannot be rotated in the circumferential direction, and the suspension wire 15 cannot be detached from the hook 4. This means that the cam lever pin 5 is not erroneously operated, and the lifeboat 16 does not fall.

Thereafter, when the lifeboat 16 shown in FIG. 1 lands on the water surface and sufficient buoyancy acts on the lifeboat 16, no load is applied to the hook 4, or it acts on the hook 4. The load becomes extremely small.
In this case, each of the hook 4, the hook pin 3, and the interlock 6 of the hook release structure with interlock 1 </ b> A moves from the position indicated by the dotted line to the position indicated by the solid line and the two-dot chain line in FIG. 5. That is, each of the hook 4, the hook pin 3, and the interlock 6 of the hook release structure with interlock 1A moves vertically downward.
As a result, as shown in FIG. 5, the fitting end 7b of the lock member 7 is separated from the fitting recess 5c of the cam lever pin 5, and the cam lever pin 5 can be rotated in the circumferential direction.

Then, as shown in FIG. 6, the lever 5a that is integrally mounted on the cam lever pin 5 is operated with the operation lever 20 of the operation unit 18 shown in FIG. 1, and the cam lever pin 5 is turned counterclockwise. For example, when it is rotated by 45 °, a notch 5b (see FIG. 3) formed in the cam lever pin 5 is disposed directly below the lock piece 13. That is, the lock piece 13 that has been locked so as to be placed on the cam lever pin 5 loses its support (cam lever pin 5).
As a result, as shown in FIG. 7, the lock piece 13 rotates about the interlock pin 9 so as to pass through the notch 5 b formed in the cam lever pin 5. The engaging projection 4a of the hook 4 that is accommodated and locked in the fitting recess 13a is released from the fitting recess 13a.
Thereafter, similarly to the case shown in FIG. 17, the hook 4 rotates clockwise with the hook pin 3 as a base axis, and the suspension wire 15 is finally detached from the hook 4.

That is, according to the hook release structure 1A with the interlock according to the present embodiment, only when the lifeboat 16 lands on the water surface and sufficient buoyancy acts, that is, is the load applied to the hook 4? Alternatively, the cam lever pin 5 can be operated only when the load acting on the hook 4 becomes less than desired, and the suspension wire 15 can be detached from the hook 4 by this operation.
Therefore, according to the hook release structure with an interlock 1A according to the present embodiment, when sufficient buoyancy is not acting on the hook 4, that is, in a state where the lifeboat 16 is not firmly landing on the water surface. Since the suspension wire 15 is not detached from the hook 4, it is possible to reliably prevent the lifeboat 16 from being dropped during emergency evacuation. That is, the safety when using the hook release structure with interlock 1A according to the present embodiment can be greatly improved.
Further, in the case of the hook release structure with interlock 1A according to the present embodiment, all the members constituting the interlock 6 are constituted by solid parts having sufficient strength and rigidity. There is very little possibility that the parts constituting the interlock 6 are deteriorated or deformed. For this reason, it also has the original effect that a reliable hook release structure with an interlock can be provided.
This also means that maintenance of the hook release structure with interlock 1A according to the present embodiment is easy.

When the interlocked hook release structure 1A according to the present embodiment is used, since the structure is extremely simple as described above, there is very little risk of malfunction or the like, but still sufficient buoyancy is applied. Nevertheless, it cannot be said that the situation that the interlock 6 is not released does not occur.
In order to prepare for such an emergency, in the hook release structure with an interlock 1A according to the present embodiment, even when the interlock 6 is not released while the interlock 6 should be released, A structure for easily and surely releasing the interlock 6 by a simple manual operation is provided as necessary. This point will be described in detail with reference to FIGS.
FIG. 8 is a side view showing an operation mechanism in an emergency of the hook release structure with an interlock according to the embodiment of the present invention. The same parts as those described in FIGS. 12-17 and 1-7 are denoted by the same reference numerals, and description of the configuration is omitted.
In addition, the term “emergency” as used herein means, for example, that the buoyancy is sufficiently applied to the lifeboat 16 for some reason, that is, the hook 4 is in an unloaded state or the load applied to the hook 4. Although the state is extremely small, the lock member 7 is not separated from the cam lever pin 5 and the cam lever pin 5 cannot be rotated in the circumferential direction.

In such a case, in the state shown in FIG. 4, the safety pin 10 inserted in the overlapping portion of the lock member 7 and the support arm 8 may be extracted.
In this case, as shown in FIG. 8, the state in which the lock member 7 is fixed to the support arm 8 is released, and the lock member 7 rotates counterclockwise around the interlock pin 9 by its own weight, The fitting end 7 b of the lock member 7 is separated from the body portion of the cam lever pin 5. That is, the lock member 7 arranged at the position indicated by the dotted line in FIG. 8 moves to the position indicated by the two-dot chain line in FIG.
By this operation, the cam lever pin 5 can be rotated in the circumferential direction. Therefore, by manually operating the lever 5a, the rotation restriction state of the lock piece 13 by the cam lever pin 5 can be released.
As a result, the hanging wire 15 is detached from the hook 4 through the processes shown in FIGS.
Therefore, according to the hook release structure with an interlock 1A according to the present embodiment, there is an original effect that a hook release structure with an interlock that can reliably release the interlock 6 by a simple manual operation in an emergency can be provided.

  Even if the safety pin 10 comes off unintentionally, the cam lever pin 5 cannot be rotated unless a sufficient buoyancy acts on the hook 4, so that the safety pin 10 can be removed immediately. It is not possible to perform the rotation operation. However, in case of an emergency, a cover is covered around the safety pin 10 and the cover is broken in an emergency to remove the safety pin 10 (not shown). The safety of the interlocked hook release structure 1A according to the present embodiment can be further enhanced.

Next, a hook release structure with an interlock according to a modification of the present embodiment will be described with reference to FIGS. 9 to 11.
FIG. 9 is a side view of a hook release structure with an interlock according to a modification of the embodiment of the present invention. FIG. 10 (a) is a side view of a hook according to a modification of the embodiment of the present invention, and FIG. 10 (b) is a front view of the hook according to a modification of the embodiment of the present invention. Further, FIG. 11 is a side view showing the normal operation mechanism of the hook release structure with an interlock according to a modification of the embodiment of the present invention. The same parts as those described in FIGS. 12 to 17 and FIGS. 1 to 8 are denoted by the same reference numerals, and description of the configuration is omitted.
The hook release structure with interlock 1B according to the modification of the present embodiment has the same action and effect as the hook release structure with interlock 1A described above, but the operation principle of the structure and the interlock 6 is different. ing.
Here, it demonstrates focusing on difference with the hook release structure 1A with an above-mentioned interlock.
As shown in FIG. 9, the hook release structure 1B with an interlock according to a modification of the present embodiment is such that the hook pin 3 in the hook release structure with an interlock 1A according to the previous embodiment has a hook pin insertion hole 4e _2. Instead of moving up and down in the vertical direction, the hook 4 is moved up and down while keeping the hook pin 3 stationary. Further, the interlock 6 is configured to move up and down in the vertical direction in synchronization with the vertical movement of the hook 4 in the vertical direction.

For this reason, the hook release structure 1B with an interlock according to a modification of the present embodiment has hook pin insertion holes formed in the pair of side plates 2 of the hook release structure with an interlock 1A according to the previous embodiment. Instead of making 2a ₁ into a long hole, a hook pin insertion hole 4e ₂ drilled in the hook 4 is made into a long hole. In the hook release structure with interlock 1B according to the modified example of the present embodiment, 2a ₂ drilled in the pair of side plates 2 is not a long hole.
By providing such a configuration, the hook release structure with interlock 1B according to the modification of the present embodiment allows the hook pin 3 to remain stationary when a load is applied to the hook 4 (however, the hook pin insertion hole). 2a does not include the vertical movement of the hook pin 3 within the clearance range in _2.), it can be moved up and down the hook 4 in the vertical direction within the range of the hook pin insertion hole 4e _2.
Further, in the hook release structure with interlock 1B according to the modified example of the present embodiment, the hook pin 3 does not move up and down in the vertical direction, so that the hook 4 is vertically held only by holding the support arm 8 on the hook pin 3. The support arm 8 cannot be moved up and down in synchronization with the vertical movement of the direction.
In view of such circumstances, in the hook release structure with interlock 1B according to the modification of the present embodiment, as shown in FIGS. 10 (a) and 10 (b), the hook pin inserted in the hook 4 is inserted. the vertical upper side of the peripheral edge of the hole 4e _2, hook pin insertion hole 8b of the may be provided a supporting arm engaging portion 4f projecting on right and left sides of the hook 4, supported on the support arm engaging portion 4f arm 8 _By hooking and holding ₂ , the support arm 8 is moved up and down in synchronization with the vertical movement of the hook 4 in the vertical direction.
It should be noted that the hook pin insertion hole 8b ₂ formed in the support arm 8 needs to be set larger than the hook pin insertion hole 4e ₂ formed in the hook 4 so as not to hinder the rotation operation of the hook 4. is there.

The support arm locking portions 4f, since only provided so as to protrude vertically upward side of the peripheral edge of the hook pin insertion hole 4e ₂ which is formed in the hook 4, interlocks with a hook according to a modification of the embodiment In the release structure 1B, when the hook 4 rotates about the hook pin 3, the support arm 8 automatically falls on the hook pin 3 from the support arm locking portion 4f. As a result, when the hook 4 is rotated, the interlock 6 including the support arm 8 that is hooked and held on the hook 4 does not rotate together with the hook 4 or prevents the hook 4 from rotating.
In addition, the operation mechanism of the other members in the hook release structure with interlock 1B according to the modification of this embodiment includes the members constituting the hook release structure with interlock 1A according to this embodiment described above. The same.

Here, with reference to FIG. 9 and FIG. 11, a process in which the suspension wire 15 is detached from the hook 4 in the hook release structure with interlock 1B according to the modification of the present embodiment will be described.
FIG. 9 shows the hook release structure 1B with an interlock in a state where the suspension wire 15 is hooked on the hook 4 and the lifeboat 16 is suspended. That is, a load is applied to the hook 4 shown in FIG. In other words, the hook release structure with interlock 1A shown in FIG. 1 is replaced with the hook release structure with interlock 1B shown in FIG.
In this case, the hook 4 is pulled up vertically upward by the hanging wire 15 with the hook pin 3 as a base axis, and in synchronization with this operation, the support arm 8 hooked and held on the support arm locking portion 4f of the hook 4 is held. The interlock 6 including it is pulled up vertically upward.
In this case, the fitting end 7b of the lock member 7 constituting the interlock 6 is accommodated in the fitting recess 5c of the cam lever pin 5, and the turning operation of the cam lever pin 5 in the circumferential direction is restricted.

From this state, when the lifeboat 16 suspended from the hook 4 lands on the water surface and buoyancy is applied, the hook 4 is in an unloaded state or the load (load) acting on the hook 4 is extremely small. It becomes a state.
FIG. 11 shows the interlocked hook release structure 1B in this state.
As shown in FIG. 11, when the hook 4 becomes unloaded or the load acting on the hook 4 is remarkably reduced, the hook 4 moves from the position indicated by the dotted line in FIG. 11 to the position indicated by the solid line. .
That is, the hook 4 moves vertically downward within the range of the hook pin insertion hole 4e _{2 with} the hook pin 3 as a base axis. In synchronization with this operation, the interlock 6 including the support arm 8 hooked and held on the support arm locking portion 4f of the hook 4 also moves downward in the vertical direction. With this operation, the fitting end 7b of the lock member 7 is separated from the fitting recess 5c of the cam lever pin 5, and the cam lever pin 5 can be rotated in the circumferential direction.
Thereafter, as in the case of the hook release structure 1A with interlock according to the present embodiment, the locking protrusion 13a of the hook 4 is moved from the lock piece 13 by rotating the cam lever pin 5. When the hook 4 is released, the hook 4 rotates in the clockwise direction, and the hanging wire 15 is detached from the hook 4.

  In an emergency, in the state shown in FIG. 9, the safety pin 10 that is inserted into the interlock 6 of the hook release structure 1B with the interlock is pulled out, so that the hook with the interlock according to the present embodiment described above is obtained. As in the case of the release structure 1A, the lock member 7 can be easily and reliably separated from the cam lever pin 5. As a result, the cam lever pin 5 can be rotated, and the suspension wire 15 can be detached from the hook 4.

Finally, it supplements about the technical content of the hook release structure 1A, 1B with an interlock which concerns on this Embodiment.
In the hook release structures with interlocks 1A and 1B according to the present invention, the interlock 6 and the fitting structure between the interlock 6 and the cam lever pin 5 are accommodated inside the pair of side plates 2. Although described as an example, these may be disposed outside the pair of side plates 2. Also in this case, the same operation and effect as the hook release structures with interlocks 1A and 1B according to the present embodiment can be exhibited.
When the interlock 6 and the fitting structure of the interlock 6 and the cam lever pin 5 are accommodated inside the pair of side plates 2, the support arm 8 and the lock member 7 that constitute the interlock 6 It is necessary to reduce the thickness of the overlapping portion. In this case, both the thicknesses of the overlapping portions of the lock member 7 and the support arm 8 may be reduced, and the layers may be overlapped so as to be fitted (see FIG. 3 above).
In this case, there is an advantage that the interlock 6 can be made compact. Further, since the interlock 6 is accommodated in the pair of side plates 2, the side plates 2 can prevent the foreign material from entering the interlock 6 and its mounting structure portion from interfering with its operation. Has merit. As a result, the safety during the operation of the interlock 6 can be further improved.

Further, when the interlocked hook release structures 1A and 1B according to the present embodiment are employed and the interlock 6 is accommodated between the pair of side plates 2, the side plate 2 of the support arm main body 8a. A thick portion 8e formed by increasing the thickness of the support arm main body 8a may be formed around the hook pin insertion holes 8b ₁ and 8b ₂ on the surface facing the surface.
In this case, when a lubricant such as grease is applied between the components constituting the interlocking hook release structures 1A and 1B according to the present embodiment, the support arm 8 is fixed to the inner side surface of the side plate 2. There is an advantage that can be prevented. Thereby, since malfunction and inoperative of the interlock 6 can be prevented, the safety and reliability when using the hook release structures with interlocks 1A and 1B according to the present embodiment can be further improved.

  As described above, the present invention includes an interlock that automatically switches between operation and release according to the magnitude of the load acting on the hook (the magnitude of buoyancy), and this interlock is released for some reason. This invention relates to a hook release structure with an interlock that can be released easily and surely by simple manual operation, and a lifeboat simultaneous release device using the same, and can be used in the technical field related to evacuation equipment in ships. .

1A, 1B ... interlock with the hook releasing structure 100 ... lifeboat simultaneous withdrawal device 2 ... side plate 2a _1, 2a 2 _... hook pin insertion hole 2b ... stopper 3 ... hook pin 4 ... hook 4a ... engaging projection 4b ... hooked part 4c ... stopper 4d ... wide portion _4e 1, 4e 2 _... hook pin insertion holes 4f ... support arm locking part 5 ... Kamurebapin 5a ... lever 5b ... notches 5c ... fitting recess 6 ... interlock 7 ... locking member 7a ... locking member body 7b ... mating end 7c ... interlock pin insertion hole 7d ... coupling member 7e ... safety pin insertion hole 8 ... support arm 8a ... support arm 8b _1, 8b 2 _... hook pin insertion holes 8c ... interlock pin insertion hole 8d ... Safety pin insertion hole 8e ... Thick part 9 ... Interlock pin 10 ... Safety pin 11 ... Link stopper DESCRIPTION OF SYMBOLS 1a ... Weight 12 ... Link stopper pin 13 ... Lock piece 13a ... Concave part 14 ... Deck plate 15 ... Suspension wire 16 ... Lifeboat 17 ... Propulsion device 18 ... Operation part 19 ... Operation wire 20 ... Operation lever 21 ... Hook release Structure (conventional technology) 22 ... Buoyancy detection means 23 ... Lock piece pin 24 ... Lifeboat simultaneous release device (conventional technology)

Claims (4)

A hook provided with a locking projection on the vertically lower side of the bowl-shaped portion, a pair of side plates disposed on both left and right side surfaces of the hook, and inserted through the hook and the pair of side plates. A hook pin that is provided, a cam lever pin that directly or indirectly restricts the pivoting movement of the locking projection with the hook pin as a base axis, and an interlock that regulates the pivoting movement of the cam lever pin in the circumferential direction. Have
The interlock includes a lock member that forms a fitting structure in the body of the cam lever pin and restricts rotation in the circumferential direction thereof, and a support that moves the lock member up and down in synchronization with the vertical movement of the hook pin. An arm, an interlock pin inserted through the overlapping portion of the lock member and the support arm and the pair of side plates, and an overlapping portion of the lock member and the support arm. And a safety pin that regulates the rotational movement of the locking member with the interlock pin as a base, and
The hook pin insertion holes formed in the pair of side plates to allow the hook pins to pass therethrough are long holes,
A hook release structure with an interlock, characterized in that both of the interlock pin insertion holes formed in the overlapping portion of the lock member and the support arm for inserting the interlock pin are elongated holes. A hook provided with a locking projection on the vertically lower side of the bowl-shaped portion, a pair of side plates disposed on both left and right side surfaces of the hook, and inserted through the hook and the pair of side plates. A hook pin that is provided, a cam lever pin that directly or indirectly restricts the pivoting movement of the locking projection with the hook pin as a base axis, and an interlock that regulates the pivoting movement of the cam lever pin in the circumferential direction. Have
The interlock includes a lock member that forms a fitting structure in the body portion of the cam lever pin and restricts rotation in the circumferential direction thereof, and a support that moves the lock member up and down in synchronization with the vertical movement of the hook. An arm, an interlock pin inserted through the overlapping portion of the lock member and the support arm and the pair of side plates, and an overlapping portion of the lock member and the support arm. And a safety pin that regulates the rotational movement of the locking member with the interlock pin as a base, and
A hook pin insertion hole formed in the hook for allowing the hook pin to pass therethrough is a long hole,
The peripheral edge on the vertically upper side of the hook pin insertion hole comprises a support arm locking portion that protrudes on the left and right side surfaces of the hook,
Both of the interlock pin insertion holes formed in the overlapping portion of the lock member and the support arm in order to insert the interlock pin are long holes,
A hook release structure with an interlock, wherein the support arm is hooked and held on the support arm locking portion. A lock piece is interposed between the locking end of the hook and the cam lever pin,
The locking end and the lock piece form a second fitting structure,
The lock piece is pivotally supported by the interlock pin so as to be rotatable,
The hook release structure with an interlock according to claim 1 or 2, wherein the cam lever pin restricts the rotation of the lock piece.   The lifeboat, and at least two hook release structures with an interlock according to any one of claims 1 to 3 provided on the lifeboat, and the cam lever pins in all the hooks with an interlock are rotated simultaneously. A lifeboat simultaneous detachment device comprising: an operation unit that is operated and operated.

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