High-altitude mooring hook

Abstract

The objective is to provide a high-altitude locking hook that can be easily secured to large structures such as H-beams even in narrow spaces near the ceiling, and that offers excellent operability. [Solution] The device comprises a U-shaped hook body 11 having an opening 11a on one side, and a stopper 12 attached to the lower end of one side of the hook body 11, wherein the stopper 12 is configured to slide vertically to open and close the opening 11a. It is preferable that the tip of the operating rod and the base end of the stopper are connected to enable support by the operating rod, and that when the operating rod is slid vertically relative to the hook body while connected to the operating rod, the stopper slides vertically to open and close the opening.

Description

Technical Field

[0001] The present invention relates to a hook for high-place locking used at a high-place work site. In particular, it relates to a hook for high-place locking suitable for locking large structures such as H-beams.

Background Art

[0002] During high-place work, a hook for high-place locking is locked to an upper structure using an operating rod, and a fall prevention is achieved by connecting an operator to a main rope or the like suspended from this hook for high-place locking. The following are known as hooks for high-place locking. For example, in Patent Document 1, a hook-shaped hook body having a locking side opening on the front side is provided with a stopper that is rotatably connected to the lower part thereof and is movable between a closing position for closing the locking side opening and an opening position for opening it, and a hook for high-place locking in which an operating rod is connected in the vertical direction to a part behind the locking side opening in the hook body is disclosed. In the hook of Patent Document 1, a retaining portion is provided at the upper part of the operating rod, and by adopting a configuration in which a link member is installed between the stopper and the retaining portion, the stopper can be opened and closed only by the vertical operation of the operating rod, facilitating the engagement and disengagement operations with the support member. Also, in Patent Document 2, an engaging mechanism is provided at the base end of a bent or curved main body, to which an opening / closing piece is swingably attached, and in the closed position, the bent or curved end of the main body and the tip of the opening / closing piece are engaged so as not to separate. A hook for a fall prevention device is disclosed. In the hook of Patent Document 2, the opening / closing piece is swung outward rather than inward of the main body, and by adopting this configuration for opening the hook, it is possible to hook even a relatively large angle member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

[0004] By the way, electronic display boards are installed above the station platforms, and their maintenance and inspection are carried out by workers standing on stepladders. The workers place portable stepladders below or near the object being inspected and climb onto the ladders. As preparation, they use steel beams near the ceiling as a structure and attach lanyards and work positioning ropes to ensure that the steel beams and the workers are connected. Inspection work is carried out only after these fall prevention measures have been taken.

[0005] However, because the preparation work was being carried out while climbing a stepladder, there was a period when the worker was not connected to the steel materials by a safety harness until the preparation work was completed. If the worker were to slip or lose their balance while unprotected, there was a risk that they would fall from the stepladder. For example, instead of using the above-mentioned method of attaching a lanyard, it is conceivable to use the hook described in Patent Document 1, but it is not intended for attachment to large-diameter structures such as H-beams. Furthermore, with the hook described in Patent Document 1, the hook body is formed in a hook shape, making it difficult to attach to structures in narrow spaces near the ceiling. In addition, with the hook described in Patent Document 1, the stopper moves inward into the hook body when opening and closing, so there is a risk that the stopper may come into contact with and damage the structure during the hook attachment or removal operation. Furthermore, the hook described in Patent Document 2 is configured to open by swinging the opening / closing piece outward, which allows it to be attached to large structures. However, in narrow spaces near the ceiling, the opening / closing piece in the open position comes into contact with the surrounding ceiling members, making it difficult to operate.

[0006] The objective of the present invention is to provide a high-altitude locking hook that can be easily secured to large structures such as H-beams even in narrow spaces near the ceiling, and that offers excellent operability. [Means for solving the problem]

[0007] The present invention provides a high-altitude locking hook comprising a U-shaped hook body having an opening on one side, and a stopper attached to the lower end of one side of the hook body, wherein the stopper is configured to slide vertically to open and close the opening.

[0008] In the high-altitude locking hook of the present invention, it is preferable that the tip of the operating rod and the base end of the stopper are connected so that the operating rod can support the hook, and that when the operating rod is slid vertically relative to the hook body while connected to the operating rod, the stopper slides vertically to open and close the opening. In the high-altitude locking hook of the present invention, it is preferable that the stopper is integrated with the tip of the operating rod at its base end so that it can be supported by the operating rod, and that when the operating rod, which is integrated with the stopper, is slid vertically relative to the hook body, the stopper slides vertically to open and close the opening.

[0009] In the high-altitude locking hook of the present invention, it is preferable that a mounting device is provided at the lower end of one side of the hook body, the stopper is inserted through the mounting device to attach the stopper to the hook body, and the tip of the stopper is configured to slide from the lower end of one side of the hook body to the upper end of one side. In the high-altitude locking hook of the present invention, the mounting fixture is formed in a cylindrical shape having an inner diameter through which the stopper can be inserted, and has a guide groove on its side surface. The guide groove is composed of a first groove that opens at the upper end of the mounting fixture and extends axially, a second groove that connects to the first groove and extends circumferentially, and a third groove that connects to the second groove and extends axially toward the upper end of the mounting fixture. Preferably, a projection is provided near the tip of the stopper that protrudes from its side surface and is guided by the guide groove.

[0010] In the high-altitude locking hook of the present invention, it is preferable that a connector is provided at the upper end of one side of the hook body, and the tip of the stopper is connected to the connector to close the opening, and that the stopper and the connector are configured to allow switching between maintaining and releasing the closure of the opening. In the high-altitude locking hook of the present invention, the stopper comprises a locking member located at its tip and formed in a tapered shape that narrows upward, a small-diameter portion formed following the locking member, and a release member inserted through the small-diameter portion and formed in a tapered shape that narrows downward, and preferably the connector comprises a guide hole for guiding the tip of the stopper, a locking pin that is movable between a locked position that restricts the movement of the stopper and a retracted position that does not restrict the movement of the stopper, and a biasing means for biasing the locking pin from the retracted position toward the locked position. [Effects of the Invention]

[0011] In the high-altitude locking hook according to the present invention, the shape of the hook body is U-shaped with an opening on one side, so it can be easily locked to large structures such as H-beams even in narrow spaces near the ceiling. Furthermore, when the operating rod is slid, the stopper slides along with the operating rod, opening and closing the opening. This configuration allows the opening to be opened and closed without the moving stopper getting in the way. In addition, the hook can be prevented from coming off with a simple operation using the operating rod, resulting in excellent operability. [Brief explanation of the drawing]

[0012] [Figure 1] This is a schematic diagram showing the high-altitude locking hook of this embodiment. [Figure 2] This is a close-up view of the area around the mounting fixture, where the stopper's protruding portion is positioned at the hook support location. [Figure 3] This is a magnified perspective view of the area around the mounting fixture when the stopper's protruding portion is moved to a slidable position. [Figure 4] This is a perspective view showing the tip of the stopper slid close to the connector. [Figure 5]It is a diagram showing a state where the tip of the stopper and the connector are connected to close the opening. [Figure 6] It is a side view of FIG. 5. [Figure 7] It is a partial enlarged view of the periphery of the connector in FIG. 6. [Figure 8] It is a partial enlarged perspective view of the periphery of the connector when the stopper is rotationally moved. [Figure 9] It is a partial enlarged perspective view of the periphery of the connector when the unlocking member reaches the upper position of the locking pin. [Figure 10] It is a diagram showing a state where the connection between the tip of the stopper and the connector is released.

Mode for Carrying Out the Invention

[0013] Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing the high-place locking hook of the present embodiment. As shown in FIG. 1, the high-place locking hook 10 of the present embodiment includes a hook body 11 and a stopper 12. The hook body 11 is formed in a U shape and has an opening 11a on one side surface. In the present embodiment, a flat plate formed in a substantially E shape is folded at the center and the strength is ensured by a reinforcing material to form a U-shaped hook body, but it is not limited to this. Hereinafter, each side of the U shape of the hook body 11 will be referred to as an upper side, a side side, and a lower side, and the space surrounded by each side may be referred to as an internal space. The lower surface of the upper side of the hook body 11 is formed flat. The lower surface of the upper side is a surface that contacts the H-beam 100, which is a structure to be locked when hanging the hook. By making this lower surface flat, it is possible to stably lock to the H-beam 100. [[ID=3!]] Also, the lower surface of the upper side and the surface on the internal space side of the side side may be covered with an elastic body such as rubber. The covering with the elastic body can prevent damage caused by contact between the hook body 11 and the H-beam 100. A U-shaped connecting member 11b is attached to the lower side of the hook body 11. Although not shown, a safety block, a main rope, etc. are connected to the connecting member 11b.

[0014] A mounting bracket 14 is provided at the lower end of one side of the hook body 11. The mounting bracket 14 is cylindrical and has an opening through which the stopper 12 can be inserted. The stopper 12 is attached to the hook body 11 by inserting it through the mounting bracket 14. Figure 2 is a magnified view of the area around the mounting fixture with the stopper's protrusion positioned at the hook support location. Figure 3 is a magnified perspective view of the area around the mounting fixture when the stopper's protrusion is moved to the slidable position. Figure 4 is a perspective view when the tip of the stopper is slid to the vicinity of the connector. As shown in Figures 2-4, a guide groove 15 is formed on the side surface of the mounting fixture 14. The guide groove 15 guides the protruding portion of the stopper 12, which will be described later. The guide groove 15 is formed in a roughly J-shape on the side surface of the mounting fixture 14. The guide groove 15 has a width that allows the protruding portion of the stopper 12, which will be described later, to pass through. The guide groove 15 is composed of a first groove 15a, a second groove 15b, and a third groove 15c. The first groove 15a is formed to extend axially from the mounting fixture 14, with one end opening at the upper end of the mounting fixture 15 and the other end connected to the second groove 15b. The second groove 15b is formed to extend circumferentially from the mounting fixture 14, with one end connected to the lower end of the first groove 15a and the other end connected to the lower end of the third groove 15c. The third groove 15c has one end connected to the other end of the second groove 15b, extends axially toward the upper end of the mounting fixture 14, and is shorter than the first groove 15a. In the following explanation, the upper end of the third groove 15c may be referred to as the hook support position, and the lower end of the first groove 15a as the sliding position. In this embodiment, the first groove 15a and the third groove 15c are located at positions offset by 90° in the circumferential direction of the cylindrical mounting fixture 14. In this embodiment, the mounting fixture 14 is also provided with two guide grooves 15, which are positioned symmetrically to each other.

[0015] Figure 5 shows the stopper tip connected to the connector to close the opening, Figure 6 is a side view thereof, and Figure 7 is a close-up view of the area around the connector in Figure 6. Note that the orientation of the hook shown in Figure 5 is the orientation of the hook in Figure 1 when viewed from the rear side. As shown in Figures 5-7, a connector 16 is provided at the upper end of one side of the hook body 11. The connector 16 is a component that connects to the tip 12a of the stopper 12 to close the opening 11a of the hook body 11 with the stopper 12, and the tip 12a of the stopper and the connector 16 are configured to allow switching between maintaining and releasing the closure of the opening 11a.

[0016] The connector 16 comprises a guide tube 17, a locking pin 18, and a biasing means 19. A guide hole 17a is formed inside the guide cylinder 17. The guide hole 17a guides the tip 12a of the stopper 12. The guide hole 17a has a diameter through which the stopper 12 can be inserted. The guide hole 17a is positioned coaxially with the central axis of the mounting fixture 14, and the tip 12a of the stopper 12, which is slid from the mounting fixture 14, is inserted into the guide hole 17a. Figure 8 is a magnified perspective view of the area around the connector when the stopper is rotated. Figure 9 is a magnified perspective view of the area around the connector when the lock release member reaches the position above the lock pin. As shown in Figures 8 and 9, a notch 17b is provided at the lower end of the guide tube 17. The notch 17b has a width and length that allows the protruding portion of the stopper 12, which will be described later, to be guided further upward. In this embodiment, the notch 17b of the guide cylinder 17 is positioned at a 90° offset from the first groove 15a of the guide groove 15 formed in the mounting fixture 14. In addition, in this embodiment, the guide cylinder 17 is provided with two notches 17b, which are positioned symmetrically to each other.

[0017] The lock pin 18 is formed to be movable laterally between a locked position and a retracted position. The locked position is a position that restricts the movement of the stopper 12, and the retracted position is a position that does not restrict the movement of the stopper 12. The lock pin 18 has an inclined surface where the lower surface approaches the upper surface towards the tip. In this embodiment, two lock pins 18 are provided, and their tips are arranged to face each other. The connector 16 is equipped with a spring 19 as a biasing means. The spring 19 biases the lock pin 18 in the direction from the retracted position to the locked position.

[0018] The stopper 12 is attached to the lower end of one side of the hook body 11. Specifically, the stopper 12 is attached to the hook body 11 by being inserted through the mounting fixture 14. The inserted stopper 12 is slidable in the vertical direction, and the tip 12a of the stopper 12 is configured to slide from the lower end of one side of the hook body 11 to the upper end of one side. The base end 12b of the stopper 12 is configured to be connectable to the tip of the operating rod. By connecting the tip of the operating rod and the base end of the stopper, the high-altitude locking hook 10 is supported by the operating rod. When the operating rod is slid vertically relative to the hook body 11 while connected to the operating rod, the stopper 12 slides vertically together with the operating rod, thereby enabling the opening 11a to be opened and closed.

[0019] The tip 12a of the stopper 12 is provided with a locking member 21, a small-diameter portion 22, and a lock release member 23. The locking member 21 is located at the tip 12a of the stopper and is formed in a tapered shape that narrows upwards. The small-diameter portion 22 is formed following the locking member 21 and is formed to have a smaller diameter than the other areas. The lock release member 23 is formed in a tapered shape that narrows downwards and is inserted through the small-diameter portion 22. The lock release member 23 is configured to slide up and down within the small-diameter portion 22. Near the tip 12a of the stopper 12, a protrusion 20 is provided that protrudes from its side surface. In this embodiment, two protrusions 20 are provided on the stopper 12 and are arranged symmetrically.

[0020] The following describes the operation of maintenance and inspection work on an electronic display board at a station platform using the high-altitude locking hook 10 of this embodiment. As shown in Figure 1, the tip of an operating rod (not shown) is connected to the base end 12b of the stopper 12 of the high-altitude locking hook 10 to enable support by the operating rod. The operating rod is then slid downward to align the protruding portion 20 of the stopper 12 with the hook support position of the mounting fixture 14, and the opening 11a of the hook body 11 is opened. A safety block (not shown) is also attached to the connecting member 11b.

[0021] Before conducting inspection work, fall prevention measures will be implemented as preparatory work. First, the high-altitude locking hook 10 of this embodiment is attached to a structure (H-beam 100) near the ceiling. The high-altitude locking hook 10 is lifted upward with an operating rod, and the hook body 11 is attached to the H-beam 100 located near the top of the electronic display board to be inspected by inserting it through the opening 11a on one side. The high-altitude locking hook 10 of this embodiment has a wide opening 11a on one side of the hook body 11, making it easy to hook onto large-diameter H-beams 100. Furthermore, since the hook body 11 is designed to be inserted from the side, it is suitable for work on station platforms where the gap between the ceiling and the structure (H-beam 100) is narrow. Moreover, since the lower surface of the upper edge of the hook body 11 is formed flat, it can be stably locked to the upper surface of the H-beam 100 that contacts the hook body 11 when the hook is hanging. In this way, it has a shape that allows for stable locking to the H-beam 100, so unforeseen incidents such as the hook detaching from the H-beam 100 and falling due to an uneven positioning are unlikely to occur.

[0022] Next, as shown in Figures 2 and 3, the protruding portion 20 of the stopper 12 is moved along the guide groove 15 from the hook support position to the slidable position. In actual operation, the operating rod is pulled downward along the third groove 15c, and while in that state, it is rotated 90° in the direction guided by the second groove 15b. This operation causes the protruding portion 20 of the stopper 12 to reach the lower end of the first groove 15a in the slidable position in Figure 3, passing from the upper end of the third groove 15c in the hook support position in Figure 2 through the second groove 15b. Once the stopper 12 has moved to this position, it becomes possible to slide it into the opening 11a of the hook body 11. Note that the operation of pulling the operating rod downward can also be achieved by releasing the operating rod and using its own weight to slide it downward. Next, as shown in Figure 4, the operating rod is pushed upward, and the tip 12a of the stopper 12 is slid in the direction of the arrow from the lower end of the first groove 15a to the vicinity of the connector 16 provided on the upper end of one side of the hook body 11.

[0023] Next, the stopper 12 closes the opening 11a of the hook body 11 to prevent the hook from coming off. In actual operation, the operating rod is pushed upward to slide the stopper 12 upward and insert the tip 12a of the stopper 12 into the connector 16. As a result, the tip 12a of the stopper 12 and the connector 16 are connected, as shown in Figures 5 and 6, and the opening 11a is closed. In this operation, the locking member 21 at the tip 12a of the stopper 12 is passed through the guide hole 17a of the guide cylinder 17, and the locking member 21 and the locking pin 18 come into contact. As the locking member 21 moves further upward, the tapered surface of the locking member 21 and the inclined surface of the locking pin 18 come into contact, and the locking pin 18 is pushed apart from each other from the locked position to the retracted position, guided by them. As the locking member 21 passes through the widened gap, it reaches the position above the locking pin 18, as shown in Figure 7. After the locking member 21 has passed, the locking pins 18, whose spacing has been widened, move in a direction that narrows the distance between them due to the biasing force of the spring 19, and the small diameter portion 22 below the locking member 21 is clamped by the locking pins 18, which have returned from the retracted position to the locked position.

[0024] In this configuration, even if the operating rod is pulled downwards, the locking member 21 cannot widen the gap between the locking pins 18. Therefore, the locking member 21 cannot pass through the gap between the locking pins 18, and the stopper 12 cannot slide downwards. In other words, the downward movement of the locking member 21 is blocked by the locking pins 18, and the connection between the tip 12a of the stopper 12 and the connector 16 is locked, maintaining the closure of the opening 11a. In this way, the hook is prevented from coming off with a single touch. In this locked configuration, the protruding portion 20 of the stopper 12 is in contact with the lower end of the guide cylinder 17 of the connector 16, so the stopper 12 cannot slide further upward.

[0025] After securing the high-altitude locking hook 10 to the H-beam 100 using the hook body 11 and stopper 12 to prevent the hook from coming off, a strap is pulled out from a safety block (not shown) attached to the connecting member 11b at the lower end of the hook body 11 and connected to the safety harness worn by the worker. This completes the connection between the H-beam 100 and the worker. By implementing the above fall prevention measures, fall prevention measures can be taken before climbing onto the ladder. Therefore, even if a worker loses their footing or balance while ascending or descending, or after climbing onto the ladder, a fall can be prevented because the H-beam 100 and the worker are connected by a strap.

[0026] After completing the above preparatory work, the worker climbs a stepladder and inspects the electronic display board. In this procedure, fall prevention measures are implemented before climbing the ladder and starting the inspection work, thus preventing the unprotected state during preparation work that occurs in conventional inspection procedures. After completing the inspection of the electronic display board, the worker descends from the ladder and removes the high-altitude securing hook 10 that was attached to the H-beam 100.

[0027] To remove the high-altitude locking hook 10, first rotate the stopper 12 to move the protruding portion 20 near the tip of the stopper 12 to the position where the notch 17b of the guide cylinder 17 is provided, as shown in Figure 8. This rotational operation moves the protruding portion 20 from a position where it contacts the lower end of the guide cylinder 17 to a position where the notch 17b is provided, allowing the stopper 12 to slide further upward by the length of the notch 17b. The notch 17b is positioned so as to be 90° offset from the first groove 15a of the guide groove 15. If the operating rod is simply slid upward by the sliding operation of the stopper 12 without rotating it, the protruding portion 20 will come into contact with the lower end of the guide cylinder 17 at a position 90° offset from the notch 17b. In such an operation, the protruding portion 20 can be moved to the position where the notch 17b is provided in the guide cylinder 17 by rotating the operating rod by 90°.

[0028] Next, the stopper 12 is slid upward by the length of the notch 17b, causing the unlocking member 23 to reach above the lock pin 18. When the stopper 12 is slid further upward from its locked height position, the release member 23 and the lock pin 18 come into contact. As the release member 23 moves further upward, the outer surface of the release member 23 and the inclined surface of the lock pin 18 come into contact, and the lock pin 18 is pushed apart from each other, from the locked position to the retracted position, guided by the inclined surface of the lock pin 18. As the release member 23 passes through the widened gap, it reaches the position above the lock pin 18, as shown in Figure 9. After the unlocking member 23 passes, the lock pins 18, whose spacing has been widened, move in a direction that narrows the distance between them due to the biasing force of the spring 19, and the smaller diameter portion 22 below the unlocking member 23 is clamped by the lock pins 18, which have returned from the retracted position to the locked position.

[0029] Figure 10 shows the state in which the connection between the tip of the stopper and the connector has been released. Next, the connection between the tip 12a of the stopper 12 and the connector 16 is released by pulling the operating rod downwards. When the operating rod is pulled downwards and the stopper 12 is slid downwards, the unlocking member 23 and the lock pin 18 come into contact, and the unlocking member 23 is pushed upwards by the lock pin 18. As the unlocking member 23 moves, its upper surface comes into contact with the lower surface of the lock member 21. Then, when the stopper 12 is slid further downward, the lock pin 18 is pushed apart from each other, from the locked position to the retracted position, guided by the tapered surface of the descending release member 23. As the gap widens, the release member 23 and the lock member 21, which is in contact with the release member 23, pass through together, and as shown in Figure 10, the release member 23 and the lock member 21 reach a position below the lock pin 18. As the locking member 21 and the unlocking member 23 reach the position below the locking pin 18, the lock on the connection between the tip 12a of the stopper 12 and the connector 16 is released, and the closure of the opening 11a by the stopper 12 is released.

[0030] Next, after disconnecting the stopper 12 from the connector 16, slide the operating rod downward to open the opening 11a, and then operate the operating rod to return the protruding part 20 of the stopper 12 to the hook support position of the mounting fixture 14. Then, lift the high-altitude locking hook 10 with the operating rod and remove the hook body 11 from the H-beam 100.

[0031] <Effects of this embodiment> According to this embodiment, the following effects can be obtained. During maintenance and inspection work on electronic display boards on station platforms, the high-altitude locking hook 10 of this embodiment allows preparatory work to be carried out without having to climb a ladder. Fall prevention measures can be put in place before climbing a ladder. The hook body 11 is shaped like a U, and the opening 11a is provided on one side, allowing it to be easily secured to large structures such as H-beams even in narrow spaces near the ceiling. When the operating rod is slid, the stopper 12 slides together with the operating rod, thereby opening and closing the opening 11a. In this configuration, the opening 11a can be opened and closed without the moving stopper 12 getting in the way. In this way, contact with structures when the stopper swings inward into the internal space, and contact with surrounding members when the stopper swings outward from the hook, are reduced, resulting in high ease of handling of the hook. The hook can be easily secured using the operating rod, making it highly user-friendly.

[0032] <Variation> Furthermore, the present invention is not limited to the embodiments described above, and any modifications or improvements that can achieve the objectives of the present invention are included in the present invention. In the above embodiment, the use of the high-altitude locking hook was described as maintenance and inspection work on an electronic display board on a train station platform, but it is not limited to this. For example, it can also be applied to emergency repair work, installation work, removal work, etc. In the above embodiment, the stopper and the operating rod are separate components, and the high-altitude locking hook and the operating rod are connected by linking the tip of the operating rod to the base of the stopper, but the invention is not limited to this. A configuration in which the stopper is integrated with the operating rod may also be adopted. [Explanation of Symbols]

[0033] 10 High-altitude mooring hooks 11 Hook body 11a opening 11b Connecting member 12 Stoppers 12a Tip 12b Proximal end 14 Mounting hardware 15 Guide groove 15a 1st groove 15b 2nd groove 15c 3rd groove 16 Connectors 17 Guide tube 17a Guide hole 17b Notch 18 lock pins 19. Spring (Biasing mechanism) 20 Protrusion 21 Locking member 22 Small diameter section 23. Lock release member 100H steel

Claims

1. The device comprises a U-shaped hook body having an opening on one side, and a stopper attached to the lower end of one side of the hook body. The stopper is configured to slide vertically to open and close the opening. A hook for securing objects at high places, characterized by the following features.

2. By connecting the tip of the operating rod to the base end of the stopper, support by the operating rod becomes possible. When the operating rod is slid vertically relative to the hook body while connected to the operating rod, the stopper slides vertically, causing the opening to open and close. A hook for securing objects at high places according to claim 1.

3. The stopper is integrated with the tip of the operating rod at its base end, allowing it to be supported by the operating rod. When the operating rod, which is integrated with the stopper, is slid vertically relative to the hook body, the stopper slides vertically, causing the opening to open and close. A hook for securing objects at high places according to claim 1.

4. A mounting device is provided at the lower end of one side of the hook body. The stopper is attached to the hook body by being inserted through the mounting bracket, and the tip of the stopper is configured to slide from the lower end of one side of the hook body to the upper end of the other side. A hook for securing objects at high places according to claim 1.

5. The mounting fixture is formed in a cylindrical shape having an inner diameter through which the stopper can be inserted, and has a guide groove on its side surface, the guide groove being composed of a first groove that opens at the upper end of the mounting fixture and extends in the axial direction, a second groove that connects to the first groove and extends in the circumferential direction, and a third groove that connects to the second groove and extends in the axial direction toward the upper end of the mounting fixture. Near the tip of the stopper, a projection is provided that protrudes from its side and is guided into the guide groove. The high-altitude locking hook according to claim 4.

6. A connector is provided at the upper end of one side of the hook body. The opening is closed when the tip of the stopper is connected to the connector, and the stopper and the connector are configured to allow switching between maintaining and releasing the closure of the opening. A hook for securing objects at height according to any one of claims 1 to 5.

7. The stopper comprises a locking member located at its tip and formed in a tapered shape that narrows upwards, a small diameter portion formed following the locking member, and a lock release member inserted through the small diameter portion and formed in a tapered shape that narrows downwards. The connector includes a guide hole for guiding the tip of the stopper, a locking pin that can move between a locked position that restricts the movement of the stopper and a retracted position that does not restrict the movement of the stopper, and a biasing means for biasing the locking pin from the retracted position toward the locked position. The hook for securing objects at high places according to claim 6.

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