JP5345345B2 - Lifeline attachment device and attachment structure thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide equipment and a structure for attaching a safety rope suitable for attachment to a folded plate roof. <P>SOLUTION: This safety rope attaching equipment comprises: an upper arm 2 which is formed in a linear shape in a plan view, and installed on the roof surface of the folded plate roof 21 in a lateral view; a retainer plate 3 which is integrated with a lower end of a bent vertical portion formed at the front end of the upper arm 2; a control lever 5 which is swingably pivoted on an upper horizontal portion 2c, in which a sandwich plate 4 capable of being connected/disconnected to/from the top surface of the retainer plate is pivoted on a lower end, and in which one end of a connecting rope 9 is attached to an upper end; and a lock device 10 which is fixed to an upper portion of the other end of a lower horizontal portion 2a, so as to undergo the insertion of the connecting rope 9, and which rotatably supports a lock lever 14 urged to the meshing side of the connecting rope 9. The upper arm 2 is installed on the roof; the retainer plate 3 is positioned on the undersurface of the eaves of the roof; and the control lever is tilted by pulling the connecting rope 9, so that an eaves end of the roof can be fixed by being pinched between the sandwich plate 4 and the retainer plate 3. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a lifeline attachment device suitable for fixing to a folding roof used for a platform roof or the like, and an attachment structure thereof.

  Previously, as shown in Patent Documents 1 and 2 below, the present applicant has developed a lifeline attachment device for preventing a worker from falling during roof work. In any of the attachment devices, the upper arm installed on the eaves side ends on both sides of the roof, and the eaves side is pivotally attached to the end of the upper arm on the back side of the eaves. A sandwiching arm sandwiched between the main ropes at the end of each coupling rope. The sandwiching arm includes a connection rope that is guided to the upper arm and fixed to the upper arm through a lock lever. Is connected to the main rope through a carabiner or the like, so that the work can be performed while moving freely on the roof while ensuring safety.

According to the above configuration, when an operator accidentally falls on the roof and starts to slide down, the connecting rope is tensioned, and a strong holding force acts between the arms of the mounting device, so that the device itself is attached to the eaves edge. In addition, the operator is prevented from falling from the roof. Also, when removing the attachment device from the roof, it can be easily removed simply by hanging the lock lever and loosening the connecting rope.
Utility Model Registration No. 259733 Japanese Utility Model Publication No. 60-25267

  The above mounting device is applied to the roof of ordinary houses with a roof slope, and therefore, to prevent interference with rain gutters etc. provided at the eaves edge of the roof, an overhang shape for taking a wide space under the eaves edge, etc. Has its own arm shape. By the way, when this mounting device is applied to a roof of a folded plate structure such as a Y-shaped, T-shaped, or inverted L-shaped platform, the above-mentioned conventional mounting device has its tip portion protruding greatly from the eaves edge, For installation, the operator needs to move to the eaves side, and there is a risk of touching the high-voltage overhead wire or colliding with the shoulder of the train. In addition, the platform roof has a so-called folded roof structure with a square wave shape, and its plate thickness is thin, so that it cannot be used as it is for a general house.

  Therefore, the present invention solves the above-described problems, and the purpose of the present invention is that the attachment device does not protrude greatly from the eaves of the roof of the platform, and an operator can also install the attachment device. No need to go out to the eaves side of the roof, enabling remote operation, improving safety, and attaching to a folded plate roof provided on a platform etc. so that it can be installed without concentrating the load in one place A lifeline mounting apparatus and a mounting structure thereof suitable for the above are provided.

In order to achieve the above object, the lifeline attachment device 1 of the present invention has a straight shape in plan view, an upper arm 2 installed on the roof surface of the folding roof 21, and a bend formed at the front end of the upper arm 2. A receiving plate 3 that is integrally fixed to the lower end of the portion, and a sandwiching plate 4 that is pivotally supported by the front portion of the upper arm 2 and that can be separated from and connected to the upper surface of the receiving plate 3 in a parallel direction. The operation lever 5 having one end of the connecting rope 9 attached to the upper end protruding above the upper arm 2 is fixed to the upper part of the upper arm 2, and the connecting rope 9 is inserted through the operation lever 5 at all times. A locking device 10 pivotally supporting a lock lever 14 biased toward the meshing side, the upper arm 2 is installed on the roof 21, the receiving plate 3 is positioned on the roof eave, and a connecting rope By pulling 9, operation lever 5 Is rotated, it is characterized by pinching fixing the Nokiba roof 21 between the holding plate 4 and the receiving plate 3 facing up and down parallel.

  When mounting and fixing the mounting apparatus 1, the worker WP easily inserts the tip of the folding roof between the receiving plate 3 and the holding plate 4 from the upper side of the roof and pulls the connecting rope 9 from the rear. By pulling the operating lever 5, the roof plate can be directly held in parallel between the receiving plate 3 and the holding plate 4. During this attachment work, it is not necessary for the operator to go to the eaves side, so there is no danger of touching the shoulders of the high-voltage overhead line K and the train TR, and the work can be performed safely. In this case, the connecting rope 9 pulled rearward is locked by the lock lever 14 of the locking device 10 and does not return to the front, ensuring safety.

  Further, in the lifeline attachment device 1 of the present invention, the operation lever 5 is formed by longitudinally parallel flat plates 5A and 5A, and the upper arm is interposed via a fulcrum shaft 6 provided between intermediate portions of the flat plates. 2, one end of the connecting rope 9 is attached to a mounting shaft 8 provided between the upper ends of the flat plates so as to be swingable. The locking lever 14 is locked against the upper surface of the upper arm 2 by the meshing biasing force, and the locking lever 14 is released from the meshing biasing force when the connecting rope 9 is pulled out in the other end direction. In addition, the operating lever 5 is pivoted so that the sandwiching plate 4 and the receiving plate 3 face each other in parallel and sandwich the folding roof 21.

  With the above configuration, the coupling and fixing of one end of the connecting rope 9 to the upper end of the operation lever 5 is easy and strong. As described above, the operator WP pulls the operation lever 5 by pulling the connecting rope 9 from the rear after inserting the receiving plate 3 and the holding plate 4 so as to hook the leading end of the folding plate roof. The roof plate can be directly held between the receiving plate 3 and the holding plate 4 in parallel.

Furthermore, in the lifeline attachment device 1 according to the present invention, the upper arm 2 is continuous with the lower horizontal portion 2a installed on the roof surface of the folding roof, and one end of the lower horizontal portion 2a via the upper inclined portion 2b. The upper horizontal portion 2c and the vertical portion 2d hanging from the front end of the upper horizontal portion 2c are integrally provided, and the upper horizontal portion 2c, the vertical portion 2d, and the receiving plate 3 fixed to the lower end of the vertical portion 2d are substantially connected. It is characterized by being formed into a shape.

  With the above configuration, the length of protrusion from the eaves at the tip of the mounting device 1 is minimized, and safety during and after the mounting operation is ensured.

  Furthermore, it is possible to have a structure in which the entire outer peripheral portion of the attachment device 1 is covered with an insulating material except for the movable portion, and the main body portion of the attachment device can be made of an insulating material such as FRP.

  In the mounting structure of the present invention, the mounting device 1 is fixed to a corrugated slope at the eaves side end of the folded roof 21.

  Further, the attachment device 1 is fixed to eaves side ends on both sides of the folded roof 21, and both ends of the main rope 30 are connected and stretched to the connection ropes 9 drawn out from the attachment devices 1. As a result, work safety is ensured. It is also possible to work by fixing the attachment device 1 only to one side of the folded roof 21.

Further, the pair of the attachment devices 1 is fixed at least at two or more places in the longitudinal direction of the folding roof 21 and the center of each main rope 30 stretched between the attachment devices 1 is connected to both ends of the connection rope 34. Can be linked to.

  According to the present invention, when attaching the attachment device to the roof, it is not necessary for the operator to go out to the eaves, remote work can be performed by pulling the connecting rope from the roof, and there is a risk of touching the high-voltage overhead line or the train. Therefore, work safety is ensured.

  Further, in the attachment device of the present invention, there is no part that protrudes greatly at the eaves edge and the eaves edge lower part, and the clamping part is parallel and the clamping force is large and reliable, and can be fixed with an average clamping load, and attached to the folding roof Safety is improved.

  According to the fourth aspect of the present invention, a cushion effect and a friction retention effect on the roof surface can be obtained.

  In Claim 5, since there is no attachment obstruction in the eaves edge of the folding roof 21 on the slope of the folding roof board, the fixing device 1 can be fixed satisfactorily.

  According to the invention of claim 6 or 7, in the unlikely event that a fall accident occurs on the roof, as a result of the main rope 30 being tensioned, the fixing force to the mounting device 1 is further increased, and the safety belt worn by the worker The safety of workers can be ensured through In addition, when fixing the attachment device 1 only to one side of the roof, even if a fall accident occurs on the roof, the connecting rope is tensioned via the safety belt, and the clamping force to the roof Therefore, the safety of workers is ensured.

  According to the invention of claim 7, the movement range can be expanded while ensuring the safety of the worker on the roof.

  1 and 2 show a lifeline attachment device according to a first embodiment of the present invention. This attachment device 1 is integrated with an upper arm 2 in which a square metal pipe (see the cross section in FIG. 1) having a required thickness is connected by welding in a straight line in plan view, and one end lower portion of the upper arm 2 so as to be integrated. A receiving plate 3 made of a metal press-formed body, and a movable holding plate 4 made of the same metal-made press-formed body that can be separated from and attached to the upper portion of the receiving plate 3.

  From the right side of the figure, the upper arm 2 has a lower horizontal part 2a of a predetermined length installed on the roof surface, an upper inclined part 2b joined to the tip of the lower horizontal part 2a, and a tip of the inclined part 2b. It consists of a joined upper horizontal part 2c and a vertical part 2d joined to the tip of the upper horizontal part 2c, and the receiving plate 3 is integrated into a substantially L shape by welding at the lower end of the vertical part 2d. It is made to oppose the part 2c. The upper horizontal portion 2c, the vertical portion 2d, and the receiving plate 3 are formed in a substantially U shape.

  An intermediate portion of the operation lever 5 is pivotally supported via a fulcrum shaft 6 at the central portion of the upper horizontal portion 2c. The operation lever 5 is formed by a pair of left and right parallel flat plates 5A and 5A, and an intermediate portion thereof is pivotally supported by a fulcrum shaft 6 on the left and right side surfaces of the central portion of the upper horizontal portion 2c. An intermediate portion of the holding plate 4 is swingably supported at the lower end of the operation lever 5 via a pivot shaft 7. Furthermore, a mounting shaft 8 is provided between the flat plates 5A and 5A at the upper end of the operation lever 5 protruding from the upper horizontal portion 2c. A loop 9a formed at one end of the connecting rope 9 is provided on the mounting shaft 8. Are combined. Note that each of the fulcrum shaft 6, the pivot shaft 7 and the mounting shaft 8 is composed of a bolt attached via a washer, a nut, and a sheath inserted through the outer periphery of the bolt shaft.

  A locking device 10 that passes through the other end of the connecting rope 9 is fixed to the upper rear end of the lower horizontal portion 2a. The locking device 10 is fixed to the upper surface of the lower horizontal portion 2a through a screw fixing tool B, and has a case 11 formed with a substantially U-shaped opening through which the other end of the connecting rope 9 is inserted, and an upper side in the case 11 The lock lever 14 is pivotally supported via a fulcrum shaft 12 and has a lever end projecting out of the case 11. The lock lever 14 is on both sides of the lock lever 14 and is always below the lock lever 14. A pair of torsion springs 15 are provided to turn and bias the formed meshing irregularities 14 a toward the contact side of the connecting rope 9. The engaging unevenness 14a at the lower part of the lock lever 14 has a ratchet structure that allows the connecting rope 9 to be pulled out to the other end and does not allow it to be pulled out to the one end. When the connecting rope 9 is pulled out to the other end side, the operation lever 5 is rotated in the vertical direction, the sandwiching plate 4 faces the receiving plate 3 in parallel, and a clamping force to the folding plate roof is generated therebetween. Let In the facing state, the sandwiching plate 4 is in contact with the back surface of the vertical portion 2d to maintain the facing state. In such a facing state, the connecting rope 9 is locked by the locking device 10 so that it cannot be pulled out to one end side.

  Further, a friction material 16 made of a rubber plate is secured to the lower surface of the lower horizontal portion 2a and the lower surface of the holding plate 4 to obtain cushioning properties against the roof surface and an anti-slip effect.

  FIG. 3 shows various roof shapes of the platform to which the above mounting device 1 is fixed. First, (a) has a relatively narrow platform PH on which both sides of the train TR running on the track RW are relatively narrow, and has a Y-shape on both sides of the upper portion of the steel column 20 erected in the center. In this structure, the roof 21 is arranged. Moreover, in (b), the width of the platform PH on which the train TR is mounted on both sides is relatively wide, and the roof 21 is arranged in a T shape on the upper part of the support column 20 erected in the center. . Furthermore, in (c), the train TR is attached to only one side of the platform PH, and a roof 21 is arranged in a substantially inverted L shape on a support column 20 erected on the opposite side. . A high-voltage overhead line K is provided at the top of the roof.

  Any form of the roof 21 is a folded roof having a continuous rectangular waveform, and the tops of the roofing materials formed in the rectangular waveform are connected by screwing together, overlapped and connected by bolts, or the lower part It is fitted with a pin protruding at the top of an angular corrugated tight frame and a structure with a cap on top of the pin, or a combination of these is adopted, and it is the minimum necessary for those waiting for a train on the platform PH The eaves end is positioned with a predetermined distance d between the shoulder portion of the train TR and the rain end to prevent the interference with the train TR as well as ensuring the limited rain and sunshade. 3 (a)). Further, on this type of roof 21, safety equipment for roof work is not particularly equipped.

  In FIG. 4, the attachment device 1 is fixed to the eaves ends on both sides in the width direction of the roof 21, and a main rope 30 serving as a lifeline body is stretched between the attachment devices 1, and the connection provided at a plurality of locations of the main rope 30. The state where the safety belt 31 attached to the loop 30a by the worker WP is locked via a carabiner or the like and the roof work is performed in a state in which safety is ensured is shown. The connecting loop 30a of the main rope 30 may not be provided.

  In FIG. 4A, the fixing work for the eaves end of the attachment device 1 is a state where the holding plate 4 is separated from the receiving plate 3 by loosening the connecting rope 9 (see the imaginary line on the side surface of FIG. 1). Then, when the receiving plate 3 is positioned under the eaves of the roof 21 and the connecting rope 9 is pulled with the vertical portion 2d in contact with the eaves end, the lock lever 14 rotates in the unlocking direction, and the holding plate 4 is lowered and the eaves end of the roof 21 is sandwiched between the receiving plate 3 and the connecting rope 9 is released. Then, the lock lever 14 is swung in the locking direction by the torsion spring 15, and the mounting device 1 itself is Fixed.

  Note that the amount of protrusion from the eaves end of the mounting device 1 is only the vertical portion 2d, and only the flat receiving plate 3 protrudes under the eaves, so that the amount of protrusion from the roof 21 is extremely small. The distance to the shoulder of TR is not narrowed.

  After fixing the attachment device 1, the main rope 30 is connected to the end of each connecting rope 9. In connection, as shown in an enlarged view in part of FIG. 4A, the carabiner 32 provided at the end of the main rope 30 is attached to the loop 9a formed at the end of the connecting rope 9 drawn from the attachment device 1. When the main rope 30 is pulled, the main rope 30 is tensioned by rotating the lever of the rope tensioner 33, and the main rope 30 is stretched between the attachment devices 1.

  4A shows a state in which the attachment device 1 is fixed to the valley portion of the roof 21, but in practice, it is desirable to attach to the slope portion as shown in FIG. 4B. . This is because there is a case where a rain gutter is arranged close to the eaves edge in the valley, which may be an obstacle to attachment. Further, in the mountain portion, the bolt cannot be attached due to the bolts arranged in the overlapped portion, the unevenness of the gobing process, or the projection such as the cap, and therefore, the slope portion is the most preferable fixing position free from any mounting obstacle. Further, in FIG. 4B, reference numeral 22 denotes a tight frame that supports the roof 21 in a shape corresponding to the uneven shape of the roof 21, and 23 denotes an H-section steel arranged at the lower portion of the tight frame. It is a cross beam consisting of

  Further, in FIG. 4, a pair of attachment devices 1 are fixed to opposite eaves ends of the roof 21, and a main rope 30 is stretched between the attachment devices 1. In general, this type of roof 21 is the length of the platform PH. Because of this, it is extremely long depending on the position of the worker WP.

  Therefore, as shown in FIG. 5, two pairs of attachment devices 1 are provided in the longitudinal direction of the roof 21, and the main rope 30 is stretched between them, and at an intermediate position between the main ropes 30. When the worker WP moves along the longitudinal direction of the roof 21, the safety belt 31 on the worker WP side is engaged along the connecting rope 34. By moving along the longitudinal direction in a stopped state, it is possible to ensure a large moving range while ensuring drop safety. The connecting rope 34 can be provided with a connecting loop 34 a, but the connecting loop 34 a is not necessary, and the carabiner provided at the tip of the safety belt 31 is slid along the connecting rope 34. Just do it.

  In addition, when the length of the roof 21 is further longer than two places in the longitudinal direction, a pair of the attachment devices 1 are arranged at a plurality of two or more places, and an intermediate position of the main rope 30 stretched between them. It is desirable to stretch the connecting rope 34. This is because when the length between the main ropes 30 is long, the length of the connecting rope 34 becomes long, and when a fall accident occurs, there is a possibility that the drop load cannot be absorbed due to the extension of the intermediate connecting rope 34. Because there is.

It is the sectional view on the AA line in the top view, side view, front view, and top view of the lifeline attaching device according to the first embodiment of the present invention. It is a perspective view of the same apparatus. (A)-(c) is explanatory drawing which shows the roof shape of the platform in which the same apparatus is attached. (A) is a front sectional view including a partially enlarged portion showing the structure for attaching the apparatus to the roof, and (b) is a partially enlarged view in the direction of arrow B in (a). It is a top view which shows the same preferable attachment form.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lifeline attachment apparatus 2 Upper arm 2a Lower horizontal part 2b Inclined part 2c Upper horizontal part 2d Vertical part 3 Receiving plate 4 Nipping plate 5 Operation lever, 5A Flat plate 6 Supporting shaft 7 Pivoting shaft 8 Mounting shaft 9 Connecting rope 9a Loop End 10 Locking device 11 Case 12 Support shaft 14 Lock lever 14a Engagement unevenness 15 Torsion spring 16 Friction material 20 Strut 21 Roof (folded roof)
22 Tight frame 23 Cross beam 30 Main rope 30a Loop 31 Safety belt 32 Carabiner 33 Tightening device 34 Rope 34a Loop B Screw RW Track TR Train PH Platform WP Worker d Interval K High-voltage overhead line

Claims (7)

An upper arm installed on the roof surface of the roof in a straight line in plan view;
A receiving plate fixed integrally to the lower end of the bent portion formed at the front end of the upper arm;
A holding plate pivotally supported at the front of the upper arm so as to be swingable and separable from the upper surface of the receiving plate is pivotally supported at the lower end, and one end of a connecting rope is attached to the upper end protruding above the upper arm. An operating lever;
A lock device fixed to the upper part of the rear part of the upper arm, inserted through the connecting rope, and pivotally supported by a lock lever that is constantly urged to mesh with the connecting rope,
Install the upper arm on the roof, place the receiving plate on the back of the eaves of the roof, pull the connecting rope, rotate the operating lever and place the roof between the holding plate facing the upper and lower parallel and the receiving plate A lifeline mounting device characterized by sandwiching and fixing the eaves edge of the eaves.   The operating lever (5) is formed of a longitudinally parallel flat plate (5A, 5A), and a front portion of the upper arm (2) via a fulcrum shaft (6) provided between the middle portions of the flat plate. One end of the connection rope (9) is attached to an attachment shaft (8) provided between the upper ends of the flat plates so as to be swingable. The connection rope (9) is normally connected to the locking device ( 10) is locked against the upper surface of the upper arm (2) by the meshing bias of the lock lever (14), and the lock lever (9) is locked when the connecting rope (9) is pulled out in the other direction. 14) The meshing bias of 14) is released and the pulling operation is made possible, and the operation lever (5) is rotated so that the holding plate (4) and the receiving plate (3) face each other in parallel, and the holding force Is secured in claim 1 Mounting device lifeline of the mounting. The upper arm (2) includes a lower horizontal part (2a) installed on the roof surface of the folded roof, and an upper horizontal part (2b) continuous with an upper inclined part (2b) at one end of the lower horizontal part (2a). 2c) and the vertical portion (2d) depending on the front end of the upper horizontal portion (2c) are integrally provided and fixed to the lower ends of the upper horizontal portion (2c), the vertical portion (2d) and the vertical portion (2d). The lifeline attachment device according to claim 1 or 2, wherein the receiving plate (3) is formed in a substantially U-shape.   The friction material (16) is being fixed to the bottom part of the said lower horizontal part (2a) of the said upper arm (2), and the bottom face of the said pinching plate (4), Lifeline attachment device.   The mounting apparatus (1) according to any one of claims 1 to 4, wherein the mounting apparatus (1) is fixed to a corrugated slope at the eaves side end of the folded roof (21). Construction.   The said attachment apparatus (1) in any one of Claims 1 thru | or 4 is being fixed to the eaves side edge part of the both sides of a folding roof (21), and the said withdraw | derived from each attachment apparatus (1) An attachment structure for a lifeline attachment device, wherein both ends of a main rope (30) are connected to a connection rope (9) and stretched. The attachment device (1) according to any one of claims 1 to 4, wherein a pair of the attachment devices (1) is fixed to at least two or more locations in the longitudinal direction of the folded roof (21) and attached. An attachment structure for a lifeline attachment device, wherein the center of each main rope (30) stretched between the devices (1) is connected to both ends of a connection rope (34).

Images