JP6603697B2 - Master rope intermediate strut and master rope locking member - Google Patents

Description

  The present invention relates to a master rope intermediate strut and a master rope locking member.

  When working at a high place in a place without a handrail, in order to ensure the safety of the worker, the work is performed in a state where a lanyard of a safety belt is locked to a master rope stretched at a predetermined position. In order to suppress the slack of the master rope stretched over a relatively long span, the master rope may be supported by a master rope intermediate strut provided at predetermined intervals. The master rope intermediate strut has a structure that can hold the master rope so that it does not come out when an operator falls for some reason, and is sufficient for the impact that acts through the master rope. It must be proof.

  When the worker moves along the master rope, it is necessary to change the lanyard hook at the position of the master rope middle strut. At the time of hook replacement, it is necessary to temporarily remove the lanyard from the master rope, which is not preferable because the worker is disconnected from the master rope. Therefore, for example, as shown in Patent Document 1, a two-piece safety belt may be used. According to such a safety belt, it is possible to prevent the worker from being disconnected from the master rope by changing the hook of the other lanyard while the hook of one lanyard is locked to the master rope.

  However, the two-catch safety belt is heavy, so the burden on the worker increases. Further, when changing the hook while holding the load, it is necessary to temporarily place the load, and then lift it again after changing the hook. Therefore, a safety belt device that can pass through the master rope intermediate strut without requiring a hook change is disclosed. For example, Patent Document 2 discloses a safety belt device that includes a slider clip that can be hooked and can be moved on a master rope, and a support cylinder that is provided in a state of containing the master rope. Has been. The support cylinder is formed with a slit through which the slider clip can pass. Since the slider clip passes through the slit, the operator can pass through the support tube without requiring a hook change.

JP 2009-142425 A JP 2004-121484 A

  The safety belt equipment shown in Patent Document 2 requires a number of slider clips as many as the number of workers, which is expensive. Moreover, since the slider clip cannot be exchanged, it takes time and effort when workers using the same master rope pass each other. That is, when the workers pass each other, it is necessary to remove the hooks of one worker from the slider clip and then attach the hooks of the other worker to the slider clip to exchange each other's slider clip. .

  From this point of view, the present invention proposes a master rope intermediate strut and a master rope locking member that can be configured simply and inexpensively and that can reduce labor during the movement of workers. This is the issue.

The master rope intermediate strut of the present invention for solving the above problems includes a master rope engaging member into which the master rope is inserted, and a support main body that supports the master rope engaging member. The column main body is erected vertically. The master rope locking member has a ring shape as viewed in the axial direction of the master rope by combining a pair of ring forming members. The ring-forming member includes a fixing portion disposed on the lower side of the master rope, a retaining portion disposed on the upper side of the parent rope in parallel with the fixing portion at an upper and lower intervals, and the fixing portion. and a connecting portion for the base of the coupling the base of the retaining portion. The pair of ring forming members are disposed on the left and right sides of the master rope and are spaced apart from each other in the axial direction of the master rope. Part of is overlapping in front and back. In addition, the said ring formation member may be fixed to the said support | pillar main body via the base, and may be directly fixed to the head of a support | pillar main body. The pedestal is formed in a concave shape whose upper side is opened by two flanges and a web, and the flange is arranged so as to be orthogonal to the parent rope. The fixing part of one of the ring forming members is fixed to the upper part of one flange of the pedestal, and the fixing part of the other ring forming member is fixed to the upper part of the other flange of the pedestal. Moreover, the flange of the said base removes at least one part of parts other than a junction part with the said fixing | fixed part.

  According to such a master rope intermediate strut, since the pair of ring forming members are arranged at intervals in the axial direction of the master rope, the worker can pass through the master rope intermediate strut only by twisting the hook. Can do. For this reason, it is possible to save time and effort required to replace the hook. In addition, the master rope locking member formed on the head of the column main body has a relatively simple structure and can be formed of an easily available material, so that it is inexpensive. Furthermore, since the ends of the retaining portion of the ring forming member overlap each other, the master rope is prevented from coming out.

The master rope locking member of the present invention includes a pair of ring forming members through which the master rope is inserted, and a pedestal to which the pair of ring forming members are fixed. The ring forming member is arranged on the upper side of the fixing part so as to be opposed to the fixing part fixed to the pedestal, and parallel to the fixing part with a space in the vertical direction with the master rope interposed therebetween. And a connecting portion that connects the base portion of the fixing portion and the base portion of the retaining portion. Further, the pair of ring forming members are arranged on the left and right sides so that a part of the retaining portions overlap each other when viewed in the axial direction of the parent rope, and are arranged with an interval in the axial direction of the parent rope. The end portion on the master rope side is open, and the connecting portion is disposed on the end portion on the opposite side of the master rope. In the case where the pedestal is made of concave-shaped channel steel, the fixing portion of one of the ring forming members is fixed to the upper portion of one flange of the pedestal, and the other ring forming member is fixed. What is necessary is just to fix a fixing | fixed part to the upper part of the other flange of the said base. Furthermore, it is preferable that at least a part of the flange of the pedestal is removed except for a joint portion with the fixed portion.

  Such a master rope locking member functions as an intermediate support member of the master rope by fixing the pedestal to the intermediate strut, the wall surface, the ceiling and the like. The worker can pass the hook between the master rope locking members without twisting the hook only by twisting the hook. Moreover, since the master rope locking member can be formed of an easily available material, it can be manufactured at low cost. Moreover, when channel steel is used as the pedestal, a space for allowing the hook to pass between the master rope and the surface of the pedestal (web) can always be secured. Therefore, the worker does not need to lift the master rope and can easily pass through the lanyard.

  According to the master rope intermediate strut and the master rope locking member of the present invention, it can be configured simply and inexpensively, and it is possible to reduce labor during the movement of the worker.

It is a perspective view which shows the master rope intermediate | middle support | pillar which concerns on this embodiment. It is a figure which shows the master rope locking member of this embodiment, Comprising: (a) is a side view desired from the axial direction of a master rope, (b) is a top view, (c) is a front view. (A)-(c) is a perspective view which shows each step | level when a hook passes a master rope intermediate | middle support | pillar. (A) And (b) is a perspective view which shows the use condition of the master rope locking member which concerns on another form, respectively.

  In this embodiment, the master rope intermediate strut 1 of the master rope 6 for the safety belt will be described. As shown in FIG. 1, the master rope intermediate strut 1 is disposed at an intermediate portion of the master rope 6 that is stretched to lock a lanyard (hook) of a safety belt. The master rope intermediate strut 1 includes a master rope locking member 2 through which the master rope 6 is inserted, and a column main body 3 that supports the master rope locking member 2.

  As shown in FIG. 2A, the master rope locking member 2 is formed by combining a pair of ring forming members 4, 4 and a pedestal 5. The pair of ring forming members 4, 4 are disposed on the left and right sides of the master rope 6 (both sides when viewed from the axial direction of the master rope 6), and are arranged at intervals in the axial direction of the master rope 6. Has been. Further, the pair of ring forming members 4, 4 has a ring shape as viewed in the axial direction of the parent rope 6. In the present embodiment, an interval of about 60 mm to 70 mm is secured between the ring forming members 4 and 4. In addition, the space | interval of the ring formation members 4 and 4 is not limited.

  The ring forming member 4 is formed in a U shape by processing a steel bar. The ring forming member 4 includes a linear fixing portion 41 disposed on the lower side of the master rope 6, a linear retaining portion 42 provided on the upper side of the parent rope 6, and a base portion (master) of the fixing portion 41. It comprises a semicircular connecting portion 43 that connects the end of the rope 6 opposite to the rope 6 and the base of the retaining portion 42 (the edge opposite to the parent rope 6). The fixing portion 41 and the retaining portion 42 are arranged in parallel with a space in the vertical direction. In addition, the shape of the ring formation member 4 is not limited and does not necessarily need to be U-shaped. For example, it may be U-shaped by making the connecting portion 43 straight. Further, the fixing portion 41 and the retaining portion 42 do not necessarily have to be parallel. Moreover, the fixing | fixed part 41 and the securing part 42 do not necessarily need to be linear form, for example, may be arc shape. Furthermore, the material which comprises the ring formation member 4 is not limited to a steel bar.

In the present embodiment, the length of the fixing portion 41 is 55 mm. In addition, the length of the fixing | fixed part 41 is not limited, What is necessary is just to determine suitably.
As shown in FIGS. 2A and 2B, the distal end portion of the fixing portion 41 overlaps (wraps) with the distal end portion of the other fixing portion 41 in the axial direction of the master rope 6. . In the present embodiment, the wrap length between the fixing portions 41 of the ring forming member 4 is about 10 mm. The size of the wrap length is not limited.

In the present embodiment, the length of the retaining portion 42 is 60 mm. The length of the retaining portion 42 is not limited and may be determined as appropriate.
The distal end portion of the retaining portion 42 overlaps (wraps) with the distal end portion of the other retaining portion 42 in the axial direction of the master rope 6. In the present embodiment, the wrap length between the retaining portions 42 of the ring forming member 4 is about 20 mm. The size of the wrap length is not limited.

  The connecting portion 43 connects the end portions on the outside (opposite side of the master rope 6) of the fixing portion 41 and the retaining portion 42. The connection part 43 of this embodiment is formed in the range whose internal diameter is 40-50 mm. In addition, the internal diameter of the connection part 43 is not limited. Moreover, the connection part 43 does not necessarily need to be semicircular.

  Each of the pair of ring forming members 4, 4 is disposed such that the U-shaped opening side (the distal end side of the fixing portion 41 and the retaining portion 42) is on the master rope 6 side. Arranged along the orthogonal direction. The pair of ring forming members 4 and 4 are parallel.

  The pedestal 5 is fixed to the head of the column main body 3 (see FIG. 1). As shown in FIG. 2C, the pedestal 5 of the present embodiment is made of channel steel formed in a U shape (concave shape) by two flanges 51 and 51 and a web 52. The pedestal 5 is arranged so that the flange 51 is orthogonal to the parent rope 6. One flange 51 is welded with a fixing portion 41 of one ring forming member 4, and the other flange 51 is welded with a fixing portion 41 of the other ring forming member 4. In the present embodiment, the fixing portion 41 is fixed to the outer surface of the flange 51 at a position where the height of the upper end surface of the flange 51 and the height of the upper end of the fixing portion 41 substantially coincide. In addition, the fixing method and fixing part to the base 5 of the ring formation member 4 are not limited. For example, you may weld to the inner surface of the flange 51 of the fixing | fixed part 41, and you may fix the fixing | fixed part 41 to the flange 51 via a jig | tool.

  In this embodiment, as the pedestal 5, groove steel 75 × 40 × 5 × 7 is used. In addition, the material which comprises the base 5 is not limited. As shown in FIG. 2B, in this embodiment, the flange 51 is removed except for the joint portion with the fixing portion 41. That is, one flange 51 of the pedestal 5 is removed except for the 55 mm portion from one end of the pedestal 5, and the other flange 51 of the pedestal 5 is removed from the other end of the pedestal 5 except for the 55 mm portion. . In addition, the shape (range to be removed, etc.), dimensions, and the like of the flange 51 are not limited and may be determined as appropriate.

  As shown in FIG. 1, the column main body 3 is erected at an intermediate portion in the longitudinal direction of the master rope 6. The column main body 3 of this embodiment is formed of L-shaped steel. A base plate 31 is fixed to the lower end of the column main body 3. The column body 3 is erected at a predetermined position by fixing the base plate 31 to a work floor or the like. In addition, the material which comprises the support | pillar main body 3 is not limited, For example, other steel materials, such as channel steel and H-shaped steel, may be sufficient as a steel pipe. Moreover, the support | pillar main body 3 does not necessarily need to have the baseplate 31, and may be directly fixed to a predetermined position. The cross-sectional dimension of the column main body 3 is determined by a dimension having sufficient proof strength against the load acting when the worker falls. Furthermore, the fixing method of the base plate 31 is not limited.

  The master rope 6 is inserted through a master rope locking member 2 provided at the head of the master rope intermediate strut 1. An operator who has locked the hook 71 of the lanyard 7 to the master rope 6 can move beyond the master rope intermediate strut 1 without changing the hook 71 by twisting the hook 71 at the position of the master rope intermediate strut 1. . Specifically, first, as shown in FIG. 3A, the base of the hook 71 (joint portion with the lanyard 7) is positioned on the opposite side of the connecting portion 43 of the one ring forming member 4. Thus, the hook 71 is moved from the front side to the back side by sliding along the master rope 6 in front of one ring forming member 4 (right front side in the drawing). The hook 71 that has passed through the tip side of one of the ring forming members 4 is inserted between the ring forming members 4 and 4. Next, as shown in FIG. 3B, the hook 71 is twisted so as to rotate the hook 71 around the master rope 6, so that the base of the hook 71 is opposite to the connecting portion 43 of the other ring forming member 4. To be on the side. Then, as shown in FIG. 3 (c), the hook 71 is moved from the front side to the back side by sliding along the master rope 6 in front of the other ring forming member 4 (left back side in the drawing). . The hook 71 passing through the front of the other ring forming member 4 is in a state of passing through the master rope intermediate strut 1.

  As described above, the master rope intermediate strut 1 of the present embodiment can pass the hook 71 only by the operator twisting the hook 71, and therefore, the labor required for the replacement of the hook 71 can be omitted. In addition, since the operator can pass through the master rope intermediate strut 1 by operating the hook 71 with one hand, it is not necessary to lower the luggage even when the other hand holds the luggage.

  Further, since the wrap length between the ring forming members 4 and 4 is ensured, the master rope 6 is prevented from coming out of the master rope locking member 2. Therefore, even if the worker whose lanyard 7 is locked to the master rope 6 for some reason falls, the master rope 6 is held by the master rope locking member 2, so safety is ensured. Here, if the ring forming members 4, 4 (the retaining portions 42) are not wrapped, the master rope 6 may come out. On the other hand, as the wrap length between the ring forming members 4 and 4 (the retaining portions 42) increases, it is necessary to move the hook 71 greatly when passing the hook 71, which increases the burden on the operator and increases the steel material. Increases the cost.

  Since channel steel is used as the pedestal 5 and the ring forming member 4 is fixed to the upper part of the flange 51 of the pedestal 5, even if the master rope 6 is placed on the pedestal 5 (contacted state) As shown in FIG. 2 (c), a gap into which the hook 71 enters is formed between the master rope 6 and the upper surface of the web 52 of the pedestal 5. Therefore, the master rope intermediate strut 1 can be allowed to pass through without greatly lifting the master rope 6 with tension and weight. The fixing portions 41 of the ring forming member 4 and the flanges 51 of the pedestal 5 are overlapped in the parent rope axis direction by a predetermined wrap length, so that the parent rope 6 is prevented from directly contacting the upper surface of the web 52. Has been. Here, if the flanges 51 (fixed portions 41) do not wrap, the master rope 6 may fall on the web 52, and there is a possibility that the gap between the master rope 6 and the upper surface of the web 52 is lost. On the other hand, as the wrap length between the flanges 51 (fixed portions 41) increases, the cost increases due to an increase in the steel material.

Further, since the flange 51 is removed except for the joint portion with the ring forming member 4, the movement of the hook 71 is obstructed by the flange 51 when the hook 71 passes the front end side (front) of the ring forming member 4. It is never done. Therefore, the hook 71 can be slid along the master rope 6 without lifting the master rope 6.
In addition, a sufficient space is required between the ring forming members 4 and 4 to twist (rotate) the hook 71.

The embodiment according to the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and the above-described components can be appropriately changed without departing from the spirit of the present invention.
For example, in the above-described embodiment, the master rope intermediate strut 1 fixed to the head of the pillar main body 3 standing on the floor or the like has been described. It is not limited. For example, as shown to Fig.4 (a), you may fix to the wall surface W via the attachment members 11, such as a bracket. Moreover, as shown in FIG.4 (b), you may fix the master rope locking member 2 to the ceiling upside down.

In the above embodiment, the case where the ring forming members 4 and 4 are fixed to the head of the column main body 3 via the pedestal 5 has been described. It may be directly fixed to.
Moreover, although the said embodiment demonstrated the case where the base 5 was channel steel, the base 5 does not necessarily need to be channel steel, for example, a flat plate may be sufficient. When the pedestal 5 is a flat plate, the fixing portion 41 may be fixed to the upper surface of the pedestal 5.

The fixing part 41 and the retaining part 42 do not necessarily have to be parallel.
In the embodiment, the fixing portion 41 is welded in a state of being attached to the flange 51 of the pedestal 5, but the fixing portion 41 is fixed in a state in which the tip surface is in contact with the pedestal 5. The fixing method is not limited.
Further, the ring forming member 4 does not necessarily need to be orthogonal to the parent rope 6.

DESCRIPTION OF SYMBOLS 1 Master rope middle support | pillar 2 Master rope locking member 3 Support | pillar main body 4 Ring formation member 41 Fixing part 42 Stopping part 43 Connection part 5 Base 51 Flange 52 Web 6 Parent rope

Claims (2)

A master rope locking member through which the master rope is inserted;
A main strut intermediate strut comprising a strut body supporting the master strut locking member,
The column main body is erected vertically,
The master rope locking member presents a ring shape in an axial view of the master rope by combining a pair of ring forming members,
The ring-forming member includes a fixing portion disposed on the lower side of the master rope, a retaining portion disposed on the upper side of the parent rope in parallel with the fixing portion at an upper and lower intervals, and the fixing portion. have a connecting portion that the base of the coupling the base of the retaining portion is fixed to the strut body through the pedestal,
The pedestal, two flanges and the upper by the web have been formed on the concave shape having an opening, said flange being arranged so as to be perpendicular to the lifeline,
The pair of ring forming members are disposed on the left and right sides of the master rope and are spaced apart from each other in the axial direction of the master rope. part Do weight before and after the Ri,
The fixed part of one of the ring forming members is fixed to the upper part of one flange of the pedestal, and the fixed part of the other ring forming member is fixed to the upper part of the other flange of the pedestal,
The parent rope intermediate strut is characterized in that at least a part of a portion other than a joint portion with the fixing portion is removed from the flange of the pedestal . A master rope locking member comprising a pair of ring forming members through which the master rope is inserted, and a pedestal to which the pair of ring forming members are fixed,
The ring forming member is disposed on the upper side of the fixing part so as to be parallel to the fixing part fixed to the pedestal and spaced apart from the fixing part and to face the fixing part with the master rope interposed therebetween. And a connecting portion that connects the base portion of the fixing portion and the base portion of the retaining portion,
The pair of ring forming members are arranged on the left and right so that a part of the retaining portions overlap each other when viewed in the axial direction of the master rope, and are arranged with an interval in the axial direction of the master rope. The end of the master rope is open and the connecting part is disposed at the end of the master rope opposite to the master rope ,
The pedestal is made of a concave grooved steel,
The fixed part of one of the ring forming members is fixed to the upper part of one flange of the pedestal,
The fixing part of the other ring forming member is fixed to the upper part of the other flange of the pedestal ,
The parent rope locking member according to claim 1, wherein at least a part of a portion other than a joint portion with the fixing portion is removed from the flange of the pedestal .

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