JP6510602B2 - Ascent prevention device - Google Patents

Description

  The present invention relates to a climb prevention device capable of preventing a worker or the like from rising to a steel tower without securing safety.

  Workers may need to ascend to the tower for maintenance work such as maintenance, inspection and painting in towers such as communication towers. In such a case, it is important for the worker to wear a lifeline in order to ensure the safety of the worker.

  However, it may be troublesome for the worker to wear the lifeline, and there is concern that the worker may ascend to the steel tower without wearing the lifeline. Therefore, when rising to the steel tower, it is required that the worker be urged to wear a lifeline to ensure the safety of the worker. At this time, it is also important to prevent the configuration for securing the safety of the worker from becoming complicated.

  A lockable door may be installed around the base of the tower, but this door is only intended to prevent outsiders from climbing up the tower. Since the worker usually possesses a key for unlocking the door, the door is not an effective means for ensuring the safety of the worker as described above.

  Therefore, it is desirable to provide a climb prevention device capable of reliably securing the safety of the worker, and it is further desired to simplify the configuration of the climb prevention device.

In order to solve the above-mentioned subject, the rise prevention device concerning one mode of the present invention is a lifeline equipped with a worker, a rail arranged along a height direction of a steel tower, and the worker ascends to a steel tower And a closed member configured to be movable between an open position that is open to allow the operator to ascend to the steel tower; A riser is attached to the worker at the proximal end side of the direction, and at the distal end side in the longitudinal direction of the life rope is provided a fixture attached to the rail slidably along the longitudinal direction of the rail A lock mechanism which can be disposed on the rail, and a movement restricting member extending between the open / close member and the lock mechanism, wherein the lock mechanism holds the rail, and rail Has an arm movable between unlocked positions et away, and said arm cooperating with holdable configured rail-engaging member said rail in said locked position, said locking mechanism, said The locked state held on the rail by holding the rail using the arm and the rail engaging member in the locked position, and the rail being removable from the rail by the movement of the arm to the unlocked position The movement restricting member restricts the movement of the open / close member when the lock mechanism is in the locked state and the open / close member is in the closed position, and wherein the locking mechanism is releasably configuration the movement of the movable member when in the unlocking state, the fitting slides along said rail, said arm By the arm passing through said locking mechanism to move to the unlocked position from the locked position while in contact with, the locking mechanism is adapted to be switched to the unlocking state from the latched state The lock mechanism is configured to be removable from the rail in the unlocked state .

  In the climb-up preventing apparatus according to one aspect of the present invention, the safety of the worker can be reliably ensured. In addition, the structure of the ascent prevention device can be simplified.

(A) It is a front view which shows typically the steel tower which installed the rise prevention apparatus which concerns on 1st Embodiment of this invention. (B) It is a side view which shows the iron tower roughly. It is a perspective view which shows typically the worker who attached the life rope in 1st Embodiment of this invention. It is the A section enlarged view of FIG. 1 (a). It is a figure which shows the BB cross section of FIG. 3 in the state which closed the door. It is a figure which shows the BB cross section of FIG. 3 in the state which opened the door. It is a front view which shows roughly the locking mechanism and rail which concern on 1st Embodiment of this invention in a latching state. It is the CC sectional view taken on the line of FIG. It is the figure seen from the arrow D of FIG. It is a front view which shows roughly the lock mechanism which concerns on 1st Embodiment of this invention, and a rail in the state in the middle of transfering from a locked state to a locked release state. It is a front view which shows roughly the locking mechanism and rail which concern on 1st Embodiment of this invention in a latching release state. It is an enlarged view which shows typically the part corresponded to the A section of Fig.1 (a) in the steel tower which installed the rise prevention apparatus which concerns on 2nd Embodiment of this invention. It is a figure which shows the EE cross section of FIG. 11 in the state which closed the fence. It is a figure which shows the EE cross section of FIG. 11 in the state which open | released the fence.

  A rise prevention device according to the first and second embodiments of the present invention will be described below. In addition, although the climbing prevention apparatus which concerns on this embodiment is installed in a steel tower, this invention is not limited to this, a climbing prevention apparatus may be installed in tower-like buildings other than a steel tower, a tower Preferably, the building-like structure is provided with step-like lifting equipment, ladders and the like.

First Embodiment
A climb prevention device according to a first embodiment of the present invention will be described. As shown in FIG. 1 (a) and FIG. 1 (b), the uplift prevention device 1 according to the present embodiment is installed in a steel tower T. The steel tower T extends upward from the installation surface G such as a ground surface. The uplift prevention device 1 is configured to prevent the worker or the like from rising to the steel tower T in a state where safety is not ensured.

  Specifically, as shown in FIG. 2, the ascent-preventing device 1 includes a lifeline 2 equipped by a worker W. It is preferable that the life rope 2 is not always provided in the steel tower T but is carried by the worker W. The life rope 2 has a life rope main body 21 formed in a substantially band shape, a substantially rope shape or the like. The proximal end side in the longitudinal direction of the life rope 2, specifically, the proximal end 21 a in the longitudinal direction of the life rope body 21 is attached to the worker W. A fixture which can be attached to the rail 4 so as to be slidable along the longitudinal direction of the rail 4 described later on the distal end side of the longitudinal direction of the life span 2, specifically, the distal end 21b of the longitudinal direction of the life span body 21 22 are provided.

  As shown in FIG. 1 (a), FIG. 1 (b), and FIGS. 3-5, the riser protection apparatus 1 also includes a ladder 3 and a rail 4 disposed along the height direction of the steel tower T; And a door 5 configured as an openable / closable opening / closing body. The door 5 is opened to allow the worker W to ascend to the tower T and the closed position (shown in FIGS. 1 to 4) which is closed to prevent the worker W to ascend to the tower T. It is movable between an open position (shown in FIG. 5). Furthermore, the ascent-preventing device 1 includes a lock mechanism 6 that can be disposed on the rail 4 and a lock wire 7 configured as a movement restricting member that extends between the door 5 and the lock mechanism 6.

  As shown in FIGS. 6 to 10, the lock mechanism 6 is shown in a locked state (particularly shown in FIG. 6) locked to the rail 4 and a locked released state detachable from the rail 4 (especially shown in FIG. 10). And is configured to be switchable. Furthermore, the locking mechanism 6 is switched from the locking state to the locking release state by passing the fixture 22 of the life rope 2 sliding along the rail 4 through the locking mechanism 6 (in particular, FIG. 9). Shown). The lock wire 7 restricts the movement of the door 5 when the lock mechanism 6 is in the locked state and the door 5 is in the closed position as shown in FIGS. 1 to 4 and as shown in FIG. When the lock mechanism 6 is in the unlocking state, the movement of the door 5 can be released. The further preferable structure of such a rising prevention apparatus 1 is described below.

[About details of dumplings]
The details of the forceps 3 will be described with reference to FIGS. 1 (a), 1 (b), and 3 to 5. The insulator 3 has two columns 31 and 32 extending along the height direction of the tower T. The two columns 31 and 32 are spaced apart from each other in the circumferential direction of the steel tower T. The insulator 3 also has a plurality of treads 33 spaced from each other in the height direction of the tower T. Each tread 33 extends to connect the two columns 31, 32.

  The columns 31 and 32 and the treads 33 of the ladder 3 are arranged at intervals in a direction from the center of the cross section of the tower T toward the outer periphery (hereinafter, referred to as "inward and outward directions") with respect to the tower T. The ladder 3 is attached to the steel tower T. Specifically, the columns 31 and 32 of the insulator 3 are attached to the steel tower T via a plurality of insulator mounting members 34 arranged at intervals in the height direction of the steel tower T. However, the ladder according to the present invention can also be configured to attach a plurality of treads to a steel tower without having two columns. Further, in the present invention, step-like lifting and lowering equipment may be provided instead of the ladder.

[About Rail Details]
The details of the rail 4 will be described. As shown in FIGS. 1 (a), 1 (b), and 3 to 5, the rail 4 has a rail main body 41 extending along the height direction of the steel tower T. In particular, as shown in FIG. 7, it is preferable that the cross section of the rail main body 41 is formed in a substantially I shape. The rail main body 41 connects the inner side 41a opposite to the steel tower T, the outer side 41b located on the opposite side of the inner side 41a in the inner and outer direction of the steel tower T, and the steel tower to connect the inner side 41a And an intermediate portion 41c extending in the inward / outward direction of T. The thickness of the middle portion 41c is smaller than the width of the inner portion 41a and the outer portion 41b. Also, as an example, the width of the outer side portion 41 b is preferably smaller than the width of the inner side portion 41 a.

  However, the cross section of the rail main body of the present invention can be formed into a shape other than the substantially I shape according to the conditions for attaching the attachment of the life rope to the rail, the conditions for locking the lock mechanism to the rail, etc. For example, the cross section of the rail body can be formed in a substantially T shape, a substantially L shape, a substantially U shape or the like.

  As shown in FIG. 1 (b), FIG. 4 and FIG. 5, the rail main body 41 is disposed at an interval in the inward and outward direction of the steel tower T with respect to the steel tower T. Further, the rail main body 41 is disposed at a predetermined distance from the insulator 3 on one side (indicated by the arrow P1) of the insulator 3 in the circumferential direction of the steel tower T. The predetermined distance here may be determined so as to prevent the attachment 22 of the attachment 2 attached to the rail body 41 from interfering with the forceps 3. Further, it is preferable that the rail main body 41 be disposed as close as possible to the insulator 3 in the circumferential direction of the steel tower T.

  The rail body 41 is attached to the tower T. Specifically, the inner portion 41 a of the rail main body 41 is attached to the steel tower T via a plurality of rail attachment members 42 which are arranged spaced apart from each other in the height direction of the steel tower T.

[About the details of the door]
The details of the door 5 will be described with reference to FIGS. 3 to 5. The door 5 is disposed at the lower end portion of the steel tower T. The door 5 has a door main body 51. The door main body 51 has a size that can prevent the worker W located on the ground from rising to the steel tower T. It is preferable that the door main body 51 be formed in a substantially plate shape.

  For example, the width of the door main body 51 may correspond to the length of the step 33 of the ladder 3. The upper end of the door main body 51 may be positioned so that the hand of the worker W located on the ground does not reach. The height of the door main body 51 may be longer than the reach of the worker W. In particular, it is preferable that the lower end of such a door main body 51 be located lower than the tread 33 of the lowermost end of the insulator 3.

  The door 5 also has a plurality of hinges 52 for attaching the door main body 51 to the steel tower T side so as to be able to open and close. The plurality of hinges 52 are spaced apart from each other in the height direction of the steel tower T. Each hinge 52 is a door butt portion 51a of the door main body 51 located on the other side (indicated by the arrow P2) of the steel tower T in the circumferential direction, and a pole of the ladder 3 located on the other side of the steel tower T in the circumferential direction. It is attached to the "other side support post" 32 as needed. The hinges 52 allow the door butt portion 51 a of the door main body 51 to pivot relative to the other side column 32 about an axis extending in the height direction of the steel tower T.

  However, the hinge of the present invention is attached to the door butt portion of the door main body and another member other than the other side post attached to the steel tower, and the door butt portion of the door main body is in the height direction of the steel tower by this hinge. It may be pivotable with respect to the other side support | pillar centering on the axis line extended to. Further, the door body of the present invention may be a sliding door movable in the width direction.

  A flange 51c protruding in the inside and outside is formed on the door tip 51b of the door main body 51 located on one side (indicated by the arrow P1) of the steel tower T in the circumferential direction. Although not particularly shown, a through hole penetrating in the width direction of the door main body 51 is formed in the flange portion 51 c. In particular, it is preferable that the flange portion 51c be disposed in an intermediate area in the height direction of the door tip portion 51b. The door tip in the case where the door 5 is in the closed position on the support 31 (hereinafter referred to as “one side support” if necessary) of the ladder 3 located on one side (indicated by the arrow P1) in the circumferential direction of the steel tower T A flange 31a is formed so as to correspond to the flange 51c of the portion 51b. Although not shown in the drawings, a through hole corresponding to the through hole of the flange portion 51c of the door tip portion 51b when the door 5 is in the closed position is formed in the flange portion 31a of the one side support 31.

  Although not particularly illustrated, when such a door 5 is in the closed position, a padlock or the like is inserted through the through hole of the flange portion 31a of the one side support 31 and the through hole of the flange portion 51c of the door tip 51b. It is preferable that the door 5 be attached in such a state that the door 5 can be locked by such a padlock or the like. However, the door of the present invention may be lockable by a locking mechanism using such a flange portion, a padlock or the like. For example, the door main body has a door knob or the like, and a key mechanism provided on the door knob The door may be lockable by means of

[About the details of the locking mechanism]
The details of the lock mechanism 6 will be described with reference to FIGS. 6 and 9, a part of a case 63 of the lock mechanism 6 described later is omitted. The locking mechanism 6 has one arm 61 movable between a locked position (shown in particular in FIG. 6) holding the rail 4 and a unlocked position (shown in particular in FIG. 10) away from the rail 4. The lock mechanism 6 is also between a restricted position (indicated by a solid line in particular in FIG. 6) that restricts the movement of the arm 61 and a restricted release position (indicated by a phantom line in FIG. 6 in particular) that released the movement of the arm 61. And the stopper member 62 which can move. In the present invention, the lock mechanism may have two arms facing each other in the width direction of the rail, and in this case, the stopper member may be provided on at least one of the two arms.

  In the lock mechanism 6 as described above, the attachment 22 of the attachment 2 sliding along the rail 4 from the lower side to the upper side moves the stopper member 62 from the restricted position to the restricted release position while contacting the stopper member 62. In this state, the lock mechanism 6 is passed so as to move the arm 61 from the lock position to the lock release position while abutting on the arm 61 (particularly shown in FIG. 9), whereby the lock mechanism 6 is engaged from the locked state. It is possible to switch to the stop release state (especially shown in FIG. 10). A further preferable configuration of such a lock mechanism 6 will be described below.

  The lock mechanism 6 further includes a case 63. The case 63 is disposed on the other side (indicated by the arrow P2) of the rail body 41 in the circumferential direction of the steel tower T. In the present invention, the case may be disposed on one side of the rail in the circumferential direction with respect to the rail. The case 63 has an opening 63 a that opens toward the rail body 41 in the width direction of the rail body 41 and upward. The arm 61 extends from the inside of the case 63 through the opening 63 a of the case 63 to the outside of the case 63.

  The tip end portion 61 a of the arm 61 protrudes from the opening 63 a of the case 63 and is located on the outer side of the rail main body 41 in the inside and outside direction of the steel tower T. The distal end portion 61 a of the arm 61 may be formed in a substantially J shape so as to be engageable with the outer side portion 41 b of the rail main body 41. The base end portion 61 b of the arm 61 is attached to the case 63 so as to be pivotable about an axis extending in the thickness direction of the rail main body 41 in a state of being housed inside the case 63. In an intermediate portion 61c between the tip end portion 61a and the base end portion 61b of the arm 61, a slot hole 61d which penetrates in the thickness direction of the rail main body 41 and extends in a substantially arc shape along the turning direction of the arm 61 is formed There is.

  In such a locked position of the arm 61, the tip end portion 61a of the arm 61 engages with the outer side portion 41b of the main body of the rail 41, and the lock mechanism 6 is in the locked state (particularly shown in FIG. 6). Further, at the unlocking position of the arm 61, the tip portion 61a of the arm 61 is separated from the rail 41 main body in the width direction of the rail main body 41, and the lock mechanism 6 is in the locking release state (especially shown in FIG. 10). The arm 61 is pivotable between such a locked position and an unlocked position. Although not particularly illustrated, the arm 61 may be biased from the unlocked position toward the locked position by a biasing member such as a spring.

  The lock mechanism 6 has a rail engaging member 64 extending from the case 63 toward the rail main body 41 in the width direction of the rail main body 41. In the locked state of the lock mechanism 6, the rail engaging member 64 is located on the opposite side of the tip portion 61 a of the arm 61 in the inward and outward direction of the steel tower T across the rail main body 41. The rail engaging member 64 may be formed in a substantially U-shape so as to engage with the inner portion 41 a of the rail main body 41. Such a rail engaging member 64 cooperates with the arm 61 in the locked position to hold the rail body 41. In the present invention, the tip end portion of the arm may be disposed on the inside in the inward and outward direction of the steel tower, and the rail engaging member may be disposed on the outside in the inward and outward direction of the steel tower.

  The lock mechanism 6 further includes upper and lower guide members 65 and 66 engaged with the rail main body 41 in a state where it can slide in the longitudinal direction of the rail main body 41. The upper guide member 65 is located above the rail engaging member 64, and the lower guide member 66 is located below the rail engaging member 64. Furthermore, the upper and lower guide members 65 and 66 are located on the opposite side of the tip portion 61 a of the arm 61 in the inside and outside direction of the steel tower T with the rail main body 41 interposed therebetween. As one example, the upper guide member 65 may be attached to the case 63, and the lower guide member 66 may be attached to the upper guide member 65 via a connecting member 67 extending along the longitudinal direction of the rail body 41.

  Next, the stopper member 62 is disposed inside the case 63 inside the inside and outside direction of the steel tower T with respect to the arm 61. In the present invention, the stopper member can be disposed inside the case and outside the arm in the inside and outside direction of the steel tower. The stopper member 62 has a stopper main body 62 a that can move between a restricted position that restricts the movement of the arm 61 and a restricted release position in which the movement of the arm 61 is released. The stopper member 62 has a lever portion 62 b which protrudes from the arm 61 through the slot hole 61 d of the arm 61. The lever portion 62 b is disposed to be able to abut on a projection 22 a that protrudes from the attachment 22 of the life rope 2 in the rail width direction when the life rope 2 slides on the rail body 41.

  The lock mechanism 6 may be in a locked state at a position corresponding to the upper and lower ends of the door 5 on the rail main body 41. In such a lock mechanism 6, the stopper main body 62a is located at the restricting position in a state where the lever portion 62b is located at the lower end of the slot hole 61d of the arm 61 (shown in FIG. 6 as a solid line). When the fixture 22 moves upward from below, the lever portion 62b is pushed upward from below by the projection 22a, and the stopper main body 62a moves from the restriction position to the restriction release position (particularly shown in FIG. 9). . With the stopper body 62a reaching the restriction release position (indicated by an imaginary line in FIG. 6 in particular), the attachment 22 locks the arm 61 from the lock position when the attachment 22 further moves upward from the lower position Push up to the release position. As a result, as shown in FIG. 10, the locking mechanism 6 is switched from the locking state to the locking release state, and the locking mechanism 6 in the locking release state can be removed from the rail main body 41.

[About the details of the lock wire]
Details of the lock wire 7 will be described with reference to FIGS. 3 to 5 and 7. The lock wire 7 is a wire made of a flexible material that is hard to break. For example, such a material can be a metal such as steel, a plastic such as vinyl chloride, or the like. In the present invention, the movement restricting member exemplified by the lock wire may be a member other than the wire. For example, the movement restricting member may be a rope, a chain or the like.

  The proximal end 7 a in the longitudinal direction of the lock wire 7 is attached to the lock mechanism 6. In particular, the proximal end 7 a of the lock wire 7 is preferably attached to the case 63 of the lock mechanism 6. Further, on the tip end side in the longitudinal direction of the lock wire 7, a loop portion 7b formed so as to be able to wind the forceps 3 and the door 5 is formed.

  As shown in FIGS. 1 to 4, when the lock mechanism 6 is in a locked state at a position corresponding between the upper end and the lower end of the door 5 on the rail main body 41, the loop portion 7 b of the lock wire 7 It arrange | positions so that the door 5 may be wound, and the movement of the door main body 51 of the door 5 is controlled by this. However, in the present invention, instead of winding the lock wire loop portion around the forceps and the door, the loop portion of the lock wire or the longitudinal tip end portion of the lock wire is the door body, in particular, the flange portion of the door body, the door knob Etc., which may restrict the movement of the door body of the door. Furthermore, as shown in FIG. 5, the loop portion 7 b of the lock wire 7 can be removed from the forceps 3 and the door 5 in a state where the lock mechanism 6 is removed from the rail main body 41 in the unlocked state. The door body 51 can be opened and closed.

  As described above, according to the uplift prevention device 1 according to the present embodiment, the door main body 51 of the door 5 is closed by the lock mechanism 6 and the lock wire 7 before the attachment 22 of the life rope 2 is attached to the rail 4 on the steel tower T side. The door main body 51 of the door 5 can be opened after the attachment 22 of the life rope 2 is attached to the rail 4 and the worker W ascends the steel tower T in a state where the life rope 2 is not attached. Can be prevented. Therefore, the safety of the worker W can be reliably ensured. In addition, since the movement of the door main body 51 can be restricted and released by the simple configuration using the lock mechanism 6 and the lock wire 7, the configuration of the ascent protection device 1 can be simplified.

  Further, according to the uplift prevention device 1 according to the present embodiment, the locking state and the unlocking state of the lock mechanism 6 can be brought about by the simple arm 61 and the stopper member 62. Configuration can be simplified.

Second Embodiment
A climb prevention device according to a second embodiment of the present invention will be described. As shown in FIG. 11 to FIG. 13, the uplift prevention device 11 according to the present embodiment differs from the uplift prevention device 1 of the first embodiment in that the opening / closing body is a fence 8 instead of the door 5. The configuration other than the fence 8 and the configuration related thereto in the uplift preventing device 11 according to the present embodiment is the same as that of the first embodiment. Such a fence 8 and the configuration related to it will be described below.

[About the details of the fence]
The details of the fence 8 will be described. As shown in FIG. 11 and FIG. 12, the fence 8 is in a closed position where the worker W is closed to prevent the worker W from rising to the steel tower T, and as shown in FIG. It is movable between open and open positions to allow that. As shown in FIGS. 11 to 13, the fence 8 includes a fixed frame 81 attached to the forceps 3, in particular, the support columns 31 of the forceps 3, and two movable frames 82 movably attached to the fixed frame 81. , 83. The fixed frame 81 and two movable frames (hereinafter, referred to as “first and second movable frames” if necessary) 82 and 83 are formed to surround the forceps 3. The fixed frame 81 is disposed on the inside of the tower 3 with respect to the insulator 3, and the two movable frames 82 and 83 are disposed on the outside of the tower 3 with respect to the insulator 3.

  The width of the fixed frame 81 is wider than the width of the insulator 3. The widthwise outer ends 82a and 83a of the first and second movable frames 82 and 83 have axes extending in the height direction of the tower T by two hinges, ie, the first and second hinges 84 and 85, respectively. , And is attached to both end portions 81a and 81b of the fixed frame 81 in the width direction so as to be pivotable. When the fence 8 is in the closed position, the widthwise central end portions 82b and 83b of the first and second movable frames 82 and 83 abut on each other. Each of the center side end portions 82b and 83b of the first and second movable frames 82 and 83 is formed so as to project outward from the inside in the inside and outside direction of the steel tower T.

  The loop portion 7b of the lock wire 7 is formed to wind around the center side end portions 82b and 83b. Each of the first and second movable frames 82, 83 is provided with a plurality of radially extending blocking bars 82c, 83c. When the fence 8 is in the closed position, the plurality of blocking rods 82 c and 83 c prevent the worker W from moving above the fence 8.

  As shown in FIGS. 11 and 12, when the lock mechanism 6 is in the locked state at a position below the fence 8 on the rail main body 41, the loop portion 7 b of the lock wire 7 is in the first and second movable frames 82. , 83 are arranged to wind the central side end portions 82b, 83b, whereby the movement of the first and second movable frames 82, 83 of the fence 8 is restricted. Furthermore, as shown in FIG. 13, in the loop portion 7 b of the lock wire 7, the first and second movable frames 82, 83 of the fence 8 are in a state where the lock mechanism 6 is removed from the rail main body 41 in the unlocked state. It can be opened and closed. As an example, such a fence 8 is preferably disposed above the lower end portion of the steel tower T.

  However, in the present invention, the fence may have one movable frame formed so as to integrate two movable frames, in which case one widthwise end of the movable frame is the height of the tower. The other end of the movable frame in the width direction is fixed to the other end of the fixed frame when the fence is in the closed position. It is good to abut on the end. Further, instead of the fence, a door having a door main body pivotable about a horizontally extending axis may be disposed at the arrangement position of the fence, and in this case, as described in the first embodiment, the lock The loop portion of the wire may be attached to the flange portion of the door body, the door knob, or the like.

  As mentioned above, according to the uplift prevention apparatus 11 which concerns on this embodiment, the effect similar to the uplift prevention apparatus 1 which concerns on 1st Embodiment can be acquired.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and the present invention can be modified and changed based on the technical idea thereof.

  DESCRIPTION OF SYMBOLS 1, 11 climbing-up prevention apparatus, 2 life ropes, 21 life rope main body, 21a base end, 21b front end, 22 fixtures, 4 rails, 5 doors, 6 locking mechanisms, 61 arms, 62 stopper members, 7 lock wires, 8 Fence, T tower

Claims (2)

A lifeline to be equipped by a worker,
Rails arranged along the height direction of the tower,
A closed position which is closed so as to prevent the worker from rising to the tower, and an opening / closing member movable between an open position which is opened to allow the worker to rise to the tower; Equipped with
The longitudinal proximal end of the lifeline is attached to the worker,
The rising prevention device is provided with a fixture attached to the rail so as to be slidable along the longitudinal direction of the rail on the tip side in the longitudinal direction of the life rope.
A locking mechanism positionable on the rail;
A movement restricting member extending between the opening and closing body and the lock mechanism;
The lock mechanism is configured to be able to hold the rail in cooperation with the arm in the lock position holding the rail, and the arm movable between the lock release position away from the rail and the arm in the lock position. And a rail engaging member
A locked state in which the locking mechanism is locked to the rail by holding the rail using the arm and the rail engaging member in the locked position, and movement of the arm to the unlocked position Is configured to be switchable to a lock release state that can be detached from the rail by
The movement restricting member restricts the movement of the open / close member when the lock mechanism is in the locked state and the open / close member is in the closed position, and the lock mechanism is in the unlocked state Releasable movement of the opening / closing body,
The lock mechanism is moved by passing the lock mechanism so that the attachment slidingly moving along the rail moves the arm from the lock position to the lock release position while contacting the arm. It is possible to switch from the stop state to the lock release state ,
The rise prevention device , wherein the lock mechanism is configured to be removable from the rail in the locked release state . The locking mechanism, the regulating position for regulating the movement of the arm, and has a movable stopper member between the restriction release position releasing the movement of the arm,
The fixture slidingly moving from the lower side to the upper side along the rail contacts the arm in a state where the stopper member is moved from the restricted position to the restricted release position while abutting on the stopper member. The lock mechanism is switched from the locked state to the unlocked state by passing the lock mechanism so as to move the arm from the locked position to the unlocked position. The climb prevention device according to Item 1.

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