Remotely controlled hook and remotely controlled hook attachment / detachment device

Abstract

To provide a remote control type hook which eliminates a complicated structure and operation and can be operated intuitively.SOLUTION: A remote control type hook includes: an opening / closing wing 14; an auxiliary wing 16; and an opening / closing auxiliary tool 18 which is linked to the opening / closing wing 14. The auxiliary wing 16 includes: a first engagement groove 26a which engages with an engagement element 22 included in the opening / closing wing 14 to fix the opening / closing wing 14 in a closed position; a second engagement groove 26b which similarly fixes the opening / closing wing 14 in an open position; and a third groove 26c which is continuous with the first engagement groove 26a and the second engagement groove 26b. The opening / closing auxiliary tool 18 includes an acted part 18b which exerts external force for displacing the opening / closing wing 14 from the closed position to the open position.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a technology for remotely attaching and detaching a hook, and more particularly to a remotely controlled hook that can be attached and detached by remote control, and a remotely controlled hook attaching and detaching device used for attaching and detaching the hook. [Background technology]

[0002] To prevent falls during work at height, the hook connected to the safety harness's lifeline must be securely fastened to a sturdy object, such as a lifeline support. Commonly used hooks (also known as large-diameter hooks or large-diameter hooks) are attached to and detached from the lifeline support by moving a part called the opening and closing wing to open and close the gate. In addition to the opening and closing wing, the hook is equipped with ailerons, which act as a safety device that locks the opening and closing wing's movement to prevent the gate from opening unexpectedly. These opening and closing wing and aileron are designed to maintain the gate closed unless an external force is intentionally applied. The gate cannot be opened unless the aileron is moved to release the lock and then the opening and closing wing is moved. Because the hook's design is designed with the utmost consideration for safety, it is virtually impossible to open the gate without deliberate manual operation. However, in situations where workers need to attach or detach hooks in places where it is difficult for them to enter or where danger is anticipated, if it were possible to remotely operate the hooks using tools from a distance, it would not only ensure the safety of workers but also greatly improve workability. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2017-217272 Summary of the Invention [Problem to be solved by the invention]

[0004] Patent Document 1 discloses a device for remotely attaching and detaching a large diameter hook to a life rope support pole. This attachment and detachment device allows the gate of the large diameter hook to be opened and closed without human intervention, making it possible to attach and detach the hook to and from a life rope support pole located in a remote location.

[0005] However, while the attachment / detachment device disclosed in Patent Document 1 does not require modifications to existing hooks, the mechanisms for opening and closing wings and moving ailerons are complex, and due to this complexity, special techniques are required for remote operation. In fields related to safety, great care must be taken when changing routines. Furthermore, maximum consideration must be given to ensuring that workers do not feel uncomfortable.

[0006] In light of these points, the inventor has created a new remote-controlled hook and remote-controlled hook attachment / detachment device with the aim of enabling intuitive operation without any sense of discomfort or unnaturalness.By minimizing modifications to the familiar hook, the changes in structure and their effects can be easily understood, and by not introducing any sense of discomfort or unnaturalness into the remote operation, consideration is given to improving work efficiency and ensuring safety.

[0007] The present invention relates to a remote-controlled hook that can be attached and detached by remote control, and a remote-controlled hook attachment / detachment device used to attach and detach the hook, and provides a remote-controlled hook and remote-controlled hook attachment / detachment device that can be operated intuitively without complex structures or operations. [Means for solving the problem]

[0008] In order to solve the above-mentioned problems, the present invention is configured as follows.

[0009] The remote-controlled hook of the present invention is a remote-controlled hook comprising an opening / closing wing, an aileron, and an opening / closing auxiliary device that works in conjunction with the opening / closing wing, wherein the aileron comprises a first engagement groove that engages with an engaging element provided on the opening / closing wing to fix the opening / closing wing in a closed position, a second engagement groove that engages with the engaging element to fix the opening / closing wing in an open position, and a third groove that is continuous with the first engagement groove and the second engagement groove, and the opening / closing auxiliary device comprises an acted-on portion that applies an external force to displace the opening / closing wing from the closed position to the open position.

[0010] It is preferable that the opening / closing auxiliary device is composed of a pair of plates arranged to sandwich the opening / closing wing and the aileron from both sides, and that of the two fasteners that fasten the pair of plates on the opening / closing wing side and the aileron side, the fastener on the aileron side also serves as the acted upon part.

[0011] The remote-controlled hook attachment / detachment device of the present invention is characterized in that it comprises a holding portion that holds the remote-controlled hook, and the holding portion holds the remote-controlled hook by supporting the remote-controlled hook at three locations including a location that abuts the opening / closing wing and a location that abuts the aileron.

[0012] It is preferable that the holding portion supports the remote-controlled hook at a position above the aileron in addition to a portion that abuts against the opening / closing wing and a portion that abuts against the aileron.

[0013] The holding portion preferably includes a rubber at a location where it comes into contact with the remote-controlled hook.

[0014] It is preferable that the remote-controlled hook is provided with an acting portion that applies an external force to an acted-on portion.

[0015] The action portion is preferably configured by a metal fitting having an upwardly curved shape.

[0016] It is preferable to provide a metal fitting that curves downward for hooking the remote-controlled hook. [Effects of the Invention]

[0017] According to the present invention, it is possible to attach and detach a hook by remote control from a position away from the life rope post. The structure for remote control is also relatively simple and can be understood intuitively, so even an unskilled person can use it easily without getting confused about the operation. [Brief explanation of the drawings]

[0018] [Figure 1] Diagram showing the gate of the remote-controlled hook closed [Figure 2] Diagram showing the remote-controlled hook gate open [Figure 3] Diagram showing the operation of the remote-controlled hook gate opening [Figure 4] A diagram showing the operation of remotely opening the gate of a remote-controlled hook [Figure 5] FIG. 10 is a diagram showing a state in which a remote-controlled hook is held by the remote-controlled hook attaching / detaching device. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, an embodiment of the present invention will be described. [Configuration of remotely controlled hook] First, the configuration of the remote-controlled hook will be explained with reference to Figures 1, 2, and 3. The remote-controlled hook 10 is a safety device that prevents falls during work at heights by connecting the lifeline of a safety harness to a lifeline support attached to a fixed object such as a structure. The remote-controlled hook 10 is composed of a hook body 12 and opening / closing wings 14, ailerons 16, and opening / closing auxiliary devices 18 attached to the hook body 12.

[0020] The opening / closing wings 14 are attached to the hook body 12 in a state in which they can rotate about a fulcrum 20. The opening / closing wings 14 can rotate between an open position, in which the gate of the remotely operated hook 10 is open, and a closed position, in which the gate is closed. Fig. 1 shows the opening / closing wings 14 in the closed position, and Fig. 2 shows the opening / closing wings 14 in the open position. When the opening / closing wings 14 are pushed inward from the closed position into the hook body 12, they rotate about the fulcrum 20 and are displaced from the closed position to the open position. Furthermore, the opening / closing wings 14 are provided with stoppers 22. The stoppers 22 work in cooperation with the ailerons 16, which will be described later, to fix the opening / closing wings 14 in the closed or open position.

[0021] The aileron 16 is attached to the hook body 12 in a state in which it can rotate about a fulcrum 24. The aileron 16 has a locking function for fixing the opening / closing wing 14 in either the open position or the closed position. The aileron 16 has a first groove 26a for fixing the opening / closing wing 14 in the closed position, a second groove 26b for fixing it in the open position, and a third groove 26c that connects the first groove 26a and the second groove 26b.

[0022] 1 shows the opening / closing wings 14 locked in the closed position. Even if an attempt is made to open the gate in this state, the opening / closing wings 14 cannot be moved because the stoppers 22 of the opening / closing wings 14 are locked by being engaged with the first grooves 26a of the ailerons 16. In this way, the ailerons 16 of the remote-controlled hook 10 act as a locking mechanism that restricts the movement of the opening / closing wings 14, preventing accidents such as the gate opening unintentionally during work at height.

[0023] To open the gate of the remote-controlled hook 10, a series of operations are required, as shown in FIG. 3 . Pushing the aileron 16 into the inside of the hook body 12 while simultaneously pushing the opening / closing wing 14 into the inside of the hook body 12 is required. Pushing the aileron 16 engages the stopper 22 with the first groove 26a, releasing the locked state. This allows the stopper 22 to move downward along the third groove 26c, allowing the opening / closing wing 14 to be displaced from the closed position to the open position. When the opening / closing wing 14 is displaced to the open position, the stopper 22 moves to the second groove 26b. The aileron 16 is pushed back outward by the reaction force of the built-in spring. Therefore, when the opening / closing wing 14 is displaced to the open position, the stopper 22 automatically engages with the second groove 26b, locking the opening / closing wing 14 in the open position. This locks the remote-controlled hook 10, maintaining the gate in an open position.

[0024] On the other hand, to close the gate of the remote-controlled hook 10, it is sufficient to simply push the aileron 16 into the inside of the hook body 12. When the aileron 16 is pushed in, the stopper 22 engages with the second groove 26b, thereby releasing the locked state. This allows the stopper 22 to move upward along the third groove 26c, allowing the opening / closing wing 14 to be displaced from the open position to the closed position. Because the opening / closing wing 14 is pushed outward by the reaction force of the built-in spring, when the gate of the remote-controlled hook 10 is in an open state, the unlocked opening / closing wing 14 automatically displaces to the closed position. When the opening / closing wing 14 is displaced to the closed position, the stopper 22 automatically engages with the first groove 26a, fixing the opening / closing wing 14 in the closed position. This locks the remote-controlled hook 10, maintaining the gate in a closed state.

[0025] The opening / closing auxiliary device 18 is disposed below the remote-controlled hook 10 and is attached so as to straddle the opening / closing wing 14 and the aileron 16. The opening / closing auxiliary device 18 functions as a remote control device for opening and closing the gate of the remote-controlled hook 10 from a distance. The opening / closing auxiliary device 18 is composed of two plates 18a and two sets of fasteners 18b. The two plates 18a are disposed on the front and back sides of the opening / closing wing 14 and the aileron 16, respectively, and the end on the opening / closing wing 14 side and the end on the aileron 16 side are fastened together by fasteners 18b such as bolts and nuts. The plates 18a are provided with a hole 18c for avoiding interference with the fulcrum 20 and a hole 18d for avoiding interference with the stopper 22.

[0026] [Remote control hook action] Next, the operation of the remote-controlled hook will be explained with reference to Figure 4. It goes without saying that the remote-controlled hook 10 can be used to manually open and close a gate, just like a regular hook. However, its greatest feature is that it can be opened and closed remotely without direct hand contact, as will be described later. The remote-controlled hook 10 is remotely controlled using a remote-controlled hook attachment / detachment device 30. Of the two sets of fasteners 18b provided on the opening / closing aid 18 of the remote-controlled hook 10, the fastener on the aileron 16 side functions as the acted-up part on which an external force is applied by the remote-controlled hook attachment / detachment device 30. The remote-controlled hook attachment / detachment device 30 is equipped with an inverted J-shaped hook 32 as the acting part that applies an external force to this acted-up part.

[0027] The operation for remotely opening the gate of the remotely controlled hook 10 is as follows: First, the inverted J-shaped hook 32 is pressed against the aileron 16 and hooked onto the fastener 18b. This pushes the aileron 16 into the inside of the hook body 12, unlocking the remotely controlled hook 10. Next, while the inverted J-shaped hook 32 is still hooked onto the fastener 18b, the handle 34 is pulled downward. Since the lock has already been released, the opening / closing wing 14 moves from the closed position to the open position, opening the gate of the remotely controlled hook 10. When the handle 34 is further pulled down, the aileron 16 automatically returns to its original position due to the reaction force of the spring, and the opening / closing wing 14 is fixed in the open position. This locks the remotely controlled hook 10, and the gate remains open.

[0028] In contrast, to remotely close the gate of the remote-controlled hook 10, all that is required is to use the remote-controlled hook attaching / detaching device 30 to lightly tap the aileron 16 to push it into the inside of the hook body 12. The opening / closing wings 14, which have been unlocked by the displacement of the aileron 16, are automatically displaced from the open position to the closed position by the reaction force of the spring. When the opening / closing wings 14 are displaced to the closed position, the aileron 16 automatically returns to its original position by the reaction force of the spring, and the opening / closing wings 14 are fixed in the closed position. This locks the remote-controlled hook 10, and the gate is maintained in a closed state.

[0029] [Configuration of remotely operated hook attachment / detachment device] Next, the configuration of the remote-controlled hook attaching / detaching device will be described with reference to Figure 5. The remote-controlled hook attaching / detaching device 30 is a device used when attaching the remote-controlled hook 10 to a life rope post or the like located at a distance, and is also a device used when detaching the remote-controlled hook 10 attached to a life rope post or the like from a distance. Such a device is required to be able to easily attach the remote-controlled hook 10, to stably hold the attached remote-controlled hook 10, and to be able to easily detach the remote-controlled hook 10, and the remote-controlled hook attaching / detaching device 30 meets all of these requirements.

[0030] The remote-controlled hook attaching / detaching device 30 is composed of the aforementioned inverted J-shaped hook 32, a handle 34 for the user to grip, a holding part 36 for holding the remote-controlled hook, and a J-shaped hook 38 located below the inverted J-shaped hook 32. The inverted J-shaped hook 32 and the holding part 36 are located at the tip of the handle 34.

[0031] The remote-controlled hook attachment / detachment device 30 holds the remote-controlled hook 10 by attaching it to the holding portion 36. The holding portion 36 is composed of support portions 40, 42, and 44 that support the remote-controlled hook 10 at three points, and plates 46 and 48 that secure the support portions 40, 42, and 44 in place. The plate 46 is composed of a pair of metal plates protruding from opposite sides of the inverted J-shaped hook 32. These metal plates are positioned parallel to each other and sandwich the tip of the handle 34. The support portions 40 and 42 are located on the opposing surfaces of the plate 46. The support portion 34 located at the tip of the plate 46 abuts against the opening / closing wing 14, while the support portion 42 located at the rear abuts against the hook body 12 above the aileron 16. The support portion 40 is composed of a pair of rubber members, with a gap between them. This gap is large enough to allow the hook body 12 to pass through but not the opening / closing wing 14.

[0032] Plate 48 is disposed below plate 44. Plate 48 is composed of a pair of metal plates protruding from opposite sides of J-shaped hook 38, and these metal plates are disposed parallel to each other in a position to sandwich handle 34. Support portion 44 is disposed on the opposing surface of plate 48, and support portion 44 abuts against aileron 16 of remotely controlled hook 10.

[0033] The remote-controlled hook attachment / detachment device 30 stably holds the remote-controlled hook 10 with well-balanced support parts 40, 42, and 44, restraining it to the extent that it does not easily come off. To attach the remote-controlled hook 10 to the remote-controlled hook attachment / detachment device 30, simply move the remote-controlled hook 10 parallel to the remote-controlled hook attachment / detachment device 30. First, pass the hook body 12 through the gap in the support part 40 and move it to a position where the opening / closing wing 14 abuts against the support part 40. Then, the support part 42 abuts against the hook body 12, and the support part 44 abuts against the aileron 16, so that the remote-controlled hook 10 is supported at three points. To detach the remote-controlled hook 10 from the remote-controlled hook attachment / detachment device 30, the movement is reversed from the attachment. In this way, when attaching or detaching the remote-controlled hook 10, all that is required is to move the remote-controlled hook attachment / detachment device 30 and the remote-controlled hook 10 in parallel relative to each other, so that anyone can use it easily, regardless of the worker's level of skill.

[0034] [Operation of the remote-controlled hook attachment / detachment device] Next, the operation of the remote controlled hook attachment / detachment device 30 will be described. First, the procedure for attaching the remote controlled hook 10 to a life rope post using the remote controlled hook attachment / detachment device 30 will be described. First, the gate of the remote controlled hook 10 is opened. Second, the remote controlled hook 10 is attached to the remote controlled hook attachment / detachment device 30. Third, the handle 34 of the remote controlled hook attachment / detachment device 30 is used to push the remote controlled hook 10 up and hook the hook body 12 of the remote controlled hook 10 onto the target life rope post. Fourth, while the remote controlled hook 10 is still hooked onto the life rope post, the remote controlled hook attachment / detachment device 30 is lightly lifted. At this time, it is recommended to lift the remote controlled hook 10 while pulling in the life rope 50 to prevent the remote controlled hook 10 from coming off the life rope post so as not to lift the remote controlled hook 10 together with the remote controlled hook 10. This releases the remote controlled hook 10 from the remote controlled hook attachment / detachment device 30, leaving the remote controlled hook 10 hooked onto the life rope mast with the gate open. Fifth, when the tip of the plate 46 of the remote controlled hook attachment / detachment device 30 is used to lightly tap the aileron 16 of the remote controlled hook 10, the opening / closing wing 14, which has been unlocked as described above, automatically moves to the closed position and the gate closes. This leaves the remote controlled hook 10 safely attached to the life rope mast.

[0035] Next, we will explain the operation of the remote-operated hook attachment / detachment device 30 when detaching the remote-operated hook 10 from the life rope support. When detaching the remote-operated hook 10, the key points are how to operate the remote-operated hook attachment / detachment device 30 when opening the gate of the remote-operated hook 10 and when detaching the open gate of the remote-operated hook 10 from the life rope support. First, the inverted J-shaped hook 32 of the remote-operated hook attachment / detachment device 30 is pressed against the aileron 16 of the remote-operated hook 10 and hooked onto the fastener 18b. Second, with the operating part 32 hooked onto the fastener 18b, the remote-operated hook attachment / detachment device 30 is pulled down. This releases the lock, displacing the opening / closing wing 14 from the closed position to the open position, and the gate of the remote-operated hook 10 opens. Third, the J-shaped hook 38 of the remote-operated hook attachment / detachment device 30 is hooked onto the hook body 12 and lightly lifted to detach the remote-operated hook 10 from the life rope support. This causes the remote-controlled hook 10 to be detached from the lifeline pole.

[0036] As described above in detail, by using the remote-controlled hook 10 and the remote-controlled hook attachment / detachment device 30, it is possible to attach the remote-controlled hook 10 to the life rope mast and detach it from the life rope mast from a position away from the life rope mast. The remote-controlled hook 10 is a commercially available large-diameter hook that has been slightly modified (by providing a new second groove portion 26b in the aileron 16 and a new opening / closing auxiliary device 18), but it may also be manufactured anew rather than simply by modifying a commercially available product. [Explanation of symbols]

[0037] 10 Remote Control Hook 12 Hook body 14 Openable wings 16 aileron 16a first groove 16b Second groove 16c Third groove 18 Opening and closing aids 18b Fasteners 22 Stopper 30 Remotely controlled hook attachment / detachment device 32 Inverted J-hook 34 patterns 36 Holding part 38 J-hook 40 Support part 42 Support part 44 Support part 46 Plates 48 Plates 50 Main rope

Claims

1. A remote-controlled hook including an opening / closing wing, an aileron, and an opening / closing auxiliary device interlocked with the opening / closing wing, the aileron includes a first engagement groove that engages with an engagement element provided on the opening / closing vane to fix the opening / closing vane in a closed position, a second engagement groove that engages with the engagement element to fix the opening / closing vane in an open position, and a third groove that is continuous with the first engagement groove and the second engagement groove; The opening / closing auxiliary tool is characterized in that it includes an acted-on portion that applies an external force to the opening / closing wing to displace the opening / closing wing from the closed position to the open position. Remote controlled hook.

2. the opening / closing auxiliary device is composed of a pair of plates arranged to sandwich the opening / closing wing and the aileron from both sides, and of two fasteners fastening the pair of plates on the opening / closing wing side and the aileron side, the fastener on the aileron side also serves as the acted upon part.

2. The remotely operated hook according to claim 1.

3. A remote-controlled hook attaching / detaching device used to operate the remote-controlled hook according to claim 1 or 2, a holding portion for holding the remote-controlled hook; the holding portion holds the remotely controlled hook by supporting the remotely controlled hook at three locations including a location abutting the opening / closing wing and a location abutting the aileron. Remotely operated hook attachment / detachment device.

4. the holding portion supports the remote-controlled hook at a position above the aileron in addition to a portion that abuts against the opening / closing wing and a portion that abuts against the aileron. The remotely operated hook attaching / detaching device according to claim 3.

5. The holding part is provided with rubber at a portion where it comes into contact with the remote-controlled hook.

5. The remote-controlled hook attaching / detaching device according to claim 3 or 4.

6. The remote-controlled hook according to claim 1 or 2 is characterized in that it comprises an acting part that applies an external force to the acted part.

6. The remote-controlled hook attaching / detaching device according to any one of claims 3 to 5.

7. The action part is formed by a metal fitting having an upwardly curved shape.

7. The remote-controlled hook attaching / detaching device according to claim 6.

8. The remote control hook according to claim 1 or 2 is provided with a metal fitting having a downwardly curved shape for hanging thereon.

8. The remote-controlled hook attaching / detaching device according to claim 3.

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