JP2007075351A - Rope hooking tool for safety belt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rope hooking tool for a safety belt which can firmly hook a rope to a flange, makes easy hooking operation to and hook releasing operation from the flange, and furthermore can be manufactured at a low cost. <P>SOLUTION: Since both hooks 16, 17 are combined by a lock means 18 so that the hooking directions of both hooks 16, 17 in relation to an angle steel 13 are mutually different by about 90° and this angle relation can be maintained when using the rope hooking tool for the safety belt, the rope 15 can be firmly hooked to the angle steel 13, and the hook operation to and hook releasing operation from the angle steel 13 become easy. Furthermore, cost reduction can be attained since a conventional expensive roller is not used. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a safety belt rope latch, more specifically, for example, a safety belt rope to be worn on a worker's body in order to prevent a worker from a high place from falling and falling. The present invention relates to a rope tie for a safety belt that hangs on a structure.

For example, a floating roof tank (floating tank) filled with oil is constructed in an oil complex. The floating roof tank includes a cylindrical outer peripheral wall whose bottom opening is closed by a bottom wall, and a roof plate that floats on the oil level stored in the inner space of the outer peripheral wall. On the outer peripheral side of the upper part of the outer peripheral wall, a wind gutter as a reinforcing member is provided.
At the top of the floating roof tank, for example, a fixed foam fire extinguisher is installed. It is stipulated in the law to perform such inspections regularly. This inspection work is performed by an operator boarding the wind gutter.
However, there is no handrail or the like for ensuring the safety of the worker in the upper part of the tank. For this reason, even if a worker carried a safety belt, he could not protect himself from a crash or fall accident until he reached the fire extinguishing equipment and completed the inspection. Therefore, a handrail or the like was temporarily installed around the fire extinguishing equipment. However, in this case, the worker who performs the temporary construction is exposed to danger.

Therefore, as a conventional means for solving this problem, for example, “safety rope fixing device” of Patent Document 1 is known. This is because the inner roller applied to the inside of the bent portion of the angle steel constituting the flange portion of the upper end portion of the peripheral side wall, the outer roller applied to the outside of the bent portion, and the two rollers spaced apart from each other by a predetermined interval. And a holding plate to which the tip of the rope of the safety belt is connected.
In use, the corresponding inner and outer rollers are applied exactly to the inside or outside of the angle steel bend, respectively. Thereby, patent document 1 is attached to the flange part of the said surrounding side wall so that sliding is possible in the length direction. As a result, the worker can safely walk on the wind gutter.
Japanese Utility Model Publication No. 5-18547

However, according to Patent Document 1, in use, it is necessary to accurately apply the corresponding inner roller and outer roller to the inner and outer sides of the bent portion of the angle steel. For this reason, the latching work and the unlocking work of Patent Document 1 on the flange are troublesome.
In addition, from the viewpoint of ensuring safety, a pair of large and rigid rollers are mounted, which increases the weight of Patent Document 1 and increases the cost.

That is, according to the present invention, a rope tie for a safety belt that can securely hang a rope on a flange, can be easily engaged and released from the flange, and can be manufactured at a lower cost. The purpose is to provide.
In addition, the present invention provides a rope strap for a safety belt that is lightweight and easy to carry, and that allows an operator to move freely in the length direction of the flange while firmly locking the rope on the flange. The purpose is that.
Furthermore, an object of the present invention is to provide a rope tie for a safety belt that has a simple lock means structure and is easy to manufacture.

  According to the first aspect of the present invention, there is provided a safety band rope latch for hooking a rope connected to a safety band on a flange bent in a substantially thickness direction of the wall board at an upper end portion of the wall board of the structure. And having a structure in which one end of a pair of first side portions spaced apart in a facing state is connected to each other by a first back side portion so as to be substantially U-shaped, The first side is connected to the flange from above so as to sandwich the flange between the first side sides from the thickness direction of the wall plate. The hook has a structure in which one end of a pair of second side portions spaced apart in an opposing state is connected to each other by a second back side portion so as to be substantially U-shaped, and both the second side portions The flange is hooked to the flange from the bending direction of the flange with respect to the wall plate so that the flange is sandwiched between the side portions from above and below. And a locking means for coupling the two hooks so as to maintain the hooked state of the first hook with respect to the flange and the hooked state of the second hook with respect to the flange, respectively. It is a rope hook for a belt.

According to the first aspect of the present invention, when the rope fastener for the safety belt is used (when hooked to the flange or fixed to the flange), both the second hooks are attached to the flange. The flange is hooked by inserting (extrapolating) from the bending direction of the flange with respect to the wall plate toward the base of the flange so as to sandwich the flange between the two side portions. Thereafter, the first hook is hooked on the flange from above so that the flange is sandwiched between the first side portions from the thickness direction of the wall plate.
When unlocking the safety belt rope latch (when removing it from the flange), the first hook is moved toward the upper side of the flange and the second hook Pull it out from the flange in the direction opposite to the previous hooking direction.

  In this way, when hooked, the hooks are hooked to each other by a locking means so that the hooking directions of the hooks are different from each other by approximately 90 ° (substantially orthogonal) and this angular relationship can be maintained. The rope can be securely hooked to the flange by using the rope hook for the safety belt. Moreover, the hooking operation and the hook releasing operation with respect to the flange are facilitated. Further, since a roller having a high cost as in the prior art is not used, the cost can be reduced.

For example, to secure the safety of workers when walking on a wind gutter or other various work around the upper end of a floating roof tank, Can be used.
A floating roof type tank or the like can be adopted as the structure.
The wall plate of the structure in which the safety belt rope stopper is used may be either indoor or outdoor. Moreover, a vertical wall board may be sufficient and a horizontal wall board may be sufficient. Furthermore, an inclined wall may be used. Moreover, the wall plate may be flat or curved. For example, a wall plate having a cylindrical shape (cylindrical shape, rectangular tube shape, etc.) may be used.
The flange is a hook-shaped projecting portion bent at a substantially right angle toward one side of the wall plate at the upper end of the wall plate. For example, it is made of angle steel.

The structure of the safety belt is not limited. For example, it may be just wrapped around the operator's waist.
As the material of the rope, for example, glass fiber, various natural fibers, and various metal fibers can be employed.
As a material of the first hook and the second hook, for example, various synthetic resins (FRP resin, ABS resin, polycarbonate, etc.) and various metals (iron, steel, etc.) can be adopted. Both hooks may be made of the same material or different materials.

  The first hook having a substantially U-shape has a structure in which one end (one end portion) of a pair of first side portions parallel to each other and having the same length is connected by a first back side portion. Things can be adopted. As other first hooks, for example, both the first side portions are configured to be parallel to each other but have different lengths, and the first side portions are not parallel to each other. It is possible to adopt the same length, and the first side portions not only being parallel to each other but also having different lengths. In addition, as the first hook, the substantially U-shaped opening side (the tip side of both first side portions disposed opposite to each other) faces downward, and there is a difference in the lengths of both first side portions. In addition, a seven-letter shape or the like in which one long side portion of one side is gradually inclined toward the other side portion of the first side portion that is gradually shorter toward the side opposite to the first back side portion. It may be adopted.

Both hooks may be separated from each other. Further, both hooks may be connected to each other so as to be movable (including rotating). For example, a part in which both hooks are connected to each other by a bendable band, string, or thread may be used. Further, both hooks may be pivotally connected via a single pivot pin (including a bolt).
The structure of the locking means is not limited. For example, a pin latching structure in which a lock pin is inserted / removed in series in a pair of pin holes arranged in both hooks may be used. Further, a lock pin may be provided so as to protrude from one of the hooks, and a hook hook corresponding to the lock pin may be attached to the other of the hooks.

  According to a second aspect of the present invention, the first hooks are made of a plate material, and the first side of one side gradually approaches the other first side toward the other end opposite to the one end. The other first side portion is shorter than the one first side portion and is hooked inside the structure of the upper end portion of the wall plate. The second hook is made of a plate material, and the second back side portion is pivotally supported in the vicinity of a connecting portion between the first side portion and the back side portion via a rotation pin. The locking means is provided between the first hook and the second hook, and between the inner space of the first hook and the inner space of the second hook, the flange and Both hooks at the position where the inverted L-shaped storage space that can store the connecting portion with the flange of the wall plate with a slight gap appears. Configured to couple a safety belt rope hooking device of claim 1.

According to invention of Claim 2, since the 1st hook and the 2nd hook were each comprised from the board | plate material, the rope fastener for safety belts becomes lightweight, and it is easy to carry.
In addition, the first hook gradually moves toward the other first side portion (hereinafter referred to as a latching claw side portion) as one first side portion (hereinafter referred to as an inclined side portion) approaches the other end. An inclined 7-shaped hook was used. Then, the pivot support position of the second hook with respect to the first hook is determined in the vicinity of the connection portion between the inclined side portion of the first hook and the first back side portion (hereinafter, horizontal side portion), specifically both In the middle of the relative rotation of the hook, an inverted L-shape that can secure a slight gap between the inner space of the first hook and the inner space of the second hook so that both hooks slide along the flange. It was set as the position where the storage space appeared. Thereby, the operator can move freely in the length direction of the flange while the rope is firmly locked to the flange.

  Further, since the first hook is a seven-shaped hook in this way, for example, the other end side of the inclined side portion is arranged on the wall plate side as compared with a simple U-shaped hook having no inclined side portion. . That is, the 7-shaped hook can cover the flange in a wider range in the circumferential direction of the flange than a simple U-shaped hook. As a result, the first hook (7-shaped hook) is difficult to come off from the flange.

  Moreover, since the first hook has a seven-letter shape that covers the flange from above, when the rope is pulled to the safety belt side for some reason during use, the peripheral side surface near the tip of the rope Comes into contact with the outer end of the flange, and the rope is tensioned in a bent state with the contact position as a fulcrum. In this case, when the outer peripheral end of the flange is simply cut in the thickness direction of the flange, there are two upper and lower corners for bending the rope at the upper and lower corners of the outer peripheral portion of the flange. As a result, the safety band rope fastener using the seven-shaped hook is less likely to come off the flange of the first hook. If a simple U-shaped hook is used as the first hook, the bending fulcrum of the rope is only at one place on the upper corner of the outer peripheral portion of the flange. Therefore, compared with a 7-shaped hook, a simple U-shaped hook is easily detached from the flange.

  Further, the first hook is a seven-shaped hook, and both hooks are pivotally supported at a position where an inverted L-shaped storage space appears between the inner spaces in the middle of the relative rotation. Therefore, in the middle of engaging (inserting) the second hook with the flange, the lower end portion of the inclined side portion abuts against the wall plate, and then the second hook is further advanced, It is also possible to turn the hook around the shaft support portion with the second hook and automatically hook the first hook so as to cover the flange from above.

The length of the second hook is a length that allows the inverted L-shaped storage space to appear.
The mutual axial support position in both hooks is not limited. In short, the first hook is a position that can be hooked on the flange from above so that the flange is sandwiched between the first side portions from the thickness direction of the wall plate, and the second hook is What is necessary is just the position which can be latched on a flange from the bending direction of the flange with respect to a wall board so that a flange may be pinched | interposed from the up-down direction between both 2nd side parts.
It is preferable that the inner wall of the inner space of the first hook and the inner wall of the inner space of the second hook are each provided with a built-up portion of non-ferrous metal or synthetic resin. This is to prevent the occurrence of sparks due to contact between the inner wall of each inner space of both hooks and the flange when the safety band rope stopper is slid along the flange.
The inverted L-shaped storage space is a space that appears when the inner spaces of both hooks overlap each other during the relative rotation of both hooks. Specifically, among the forming walls of the inner space of the first hook, the hooking claw side portion and the horizontal side portion, the entire forming portion of the inner space of the second hook, and the second hook Among these, it is a space formed between the distal end side of the second side portion disposed on the lower side when the safety band rope hook is hooked on the flange.

  According to a third aspect of the present invention, the lock means has a pin latching structure in which the lock pins are inserted into and removed from a pair of pin holes formed in both hooks. Item 3. The safety belt rope retainer according to Item 2.

  According to the third aspect of the present invention, since the pin latching structure is adopted as the locking means, the structure of the locking means becomes simple, and the locking means and thus the safety band rope latch can be manufactured easily and inexpensively. Can do.

The number of lock pins used may be one or more. The number of pin holes formed in both hooks is appropriately changed depending on the number of lock pins used.
As a structure in which the lock pin is inserted into and removed from both pin holes, for example, a cannula structure or the like can be employed.
The operation of inserting / removing the lock pin into / from both pin holes may be, for example, a manual operation or an automatic operation using an electric cylinder, a solenoid, or the like.

  According to the first aspect of the present invention, the locking means is used so that the hooking directions of the hooks with respect to the flange are different from each other by approximately 90 ° and the angular relationship can be maintained when the safety belt rope hooking device is used. Since both the hooks are coupled (locked), the rope can be securely hooked to the flange by using the safety band rope hook. Moreover, the hooking operation and the hook releasing operation with respect to the flange are facilitated. Further, since a roller having a high cost as in the prior art is not used, the cost can be reduced.

In particular, according to the second aspect of the present invention, since the first hook and the second hook are each made of a plate material, the rope hook for the safety belt is light and easy to carry.
Further, the first hook is a seven-shaped hook, and both hooks are pivotally supported at a position where an inverted L-shaped storage space appears between the inner spaces in the middle of the relative rotation. Therefore, the operator can move freely in the length direction of the flange while the rope is firmly hooked on the flange.

In addition, since the first hook is a 7-shaped hook and the rope is fixed to the lower part of the inclined side part, the inclined side part is a simple U-shaped hook when using the safety band rope fastener. Compared with the corresponding part, the flange can be covered in a wider range in the circumferential direction of the flange. As a result, the first hook is unlikely to come off the flange.
Moreover, since the first hook has a seven-letter shape that covers the flange from above, the folding fulcrum of the rope when the rope is pulled to the safety belt side during use is the upper corner of the outer periphery of the flange. And the lower corner. As a result, it is possible to further increase the difficulty of removing the first hook from the flange.
Further, the first hook is a seven-shaped hook, and both hooks are pivotally supported at a position where an inverted L-shaped storage space appears between the inner spaces in the middle of the relative rotation. Therefore, in the middle of hooking (inserting) the second hook on the flange, the lower end of one of the first side portions comes into contact with the wall plate, and then the hook of the second hook is further advanced. Thus, the first hook can be rotated around the pivotal support portion with the second hook, and can be automatically hooked so as to cover the first hook from above the flange.

  According to the third aspect of the present invention, since the pin latching structure is adopted as the locking means, the structure of the locking means becomes simple, and the locking means and thus the safety band rope latch can be manufactured easily and inexpensively. Can do.

  Examples of the present invention will be described below. Here, an example of a safety band rope hook that hooks a rope connected to a safety band on an angle steel (flange) provided around the upper end of the outer peripheral wall of a floating roof tank that stores oil Indicates.

  In FIG. 2, reference numeral 10 denotes a safety band rope hook according to Embodiment 1 of the present invention. The safety band rope hook 10 is a peripheral side wall (wall plate) of a floating roof tank (structure) 11. An angle steel (flange) 13 formed at the upper end of 12 and bent 90 ° to the outside of the tank in the thickness direction of the peripheral side wall 12 is connected to a safety belt 14 attached by an operator on the wind gutter W. The rope 15 is hooked.

Hereinafter, the component parts of the safety belt rope latch 10 will be specifically described.
As shown in FIG. 1 and FIG. 3 to FIG. 7, the rope strap 10 for safety belts has a long inclined side part (one first side part) that is a pair of first side parts that are separated in an opposing state. Side end) 16b and one end of the short latching claw side portion (the other first side portion) 16d, the entire horizontal side portion (first back side portion) 16c The angle steel has a structure connected so as to have a letter shape, the rope 15 is connected to the inclined side portion 16b, and the angle steel 13 is sandwiched between the side portions 16b and 16d from the thickness direction of the peripheral side wall 12. The first hook 16 that is hooked on the upper side 13 from above and a pair of second side portions 17a and 17b that are spaced apart from each other in an opposed state are connected to each other by a second rear side portion 17c so as to be substantially U-shaped as a whole. And the angle steel 13 between the second side portions 17a and 17b in the vertical direction. The second hook 17 hooked on the angle steel 13 from the bending direction of the angle steel 13 with respect to the peripheral side wall 12, the hooked state of the first hook 16 with respect to the angle steel 13, and the angle steel 13 Locking means 18 for connecting the hooks 16 and 17 is provided so as to maintain the hooked state of the second hook 17.

  The first hook 16 is a steel plate having a seven-letter shape (FIG. 4). Specifically, the first hook 16 gradually inclines toward the latching claw side part 16d on the left side in FIG. 1 as the inclined side part 16b moves toward the lower end (the other end). The portion 16d is shorter than the inclined side portion 16b, and can be hooked inside the tank at the upper end portion of the peripheral side wall 12. A connecting hole 16a to which the base portion of the rope 15 is fixed (connected) is formed at the lower end of the inclined side portion 16b.

  A pin hole 16e of the rotation pin 19 is formed at a connecting portion between the inclined side portion 16b and the horizontal side portion 16c. Further, a long hole (pin hole) 16f that is long in the length direction of the horizontal side portion 16c and into which a lock pin 20 to be described later can be inserted is formed on the pin hole 16e side of the horizontal side portion 16c. At the outer edge in the vicinity of the tip of the horizontal side portion 16 c, the second hook 17 is rotated between the inner space of the first hook 16 and the inner space of the second hook 17. One rotation restricting piece 22 is provided so as to stop at a position where the character storage space 21 appears. On the inner wall forming the inner space of the first hook 16, a brass overlay 23 is formed over the entire length.

The second hook 17 is a steel plate having a U-shape (FIG. 5). The second hook 17 connects a pair of second side portions 17a and 17b that are spaced apart from each other in parallel and have the same length, and the base portions of the second side portions 17a and 17b. And a short second rear portion (bent portion of the U-shape) 17c. On the inner wall that forms the inner space of the second hook 17, the build-up portion 23 is formed over the entire length thereof.
The second hook 17 is pivotally supported near the connecting portion between the inclined side portion 16 b and the horizontal side portion 16 c via the rotation pin 19. A hole 17d through which the rotation pin 19 is inserted is formed in the second back side portion 17c, and the back side of the second hook 17 faces the front side of the first hook 16. The rotation pin 19 is a bolt and nut structure mainly composed of a short bolt 19 a having an axis line in the thickness direction of the second hook 17.

  The length of the second hook 17 (the length in the length direction of both the second side portions 17a and 17b) is determined when the safety band rope fastener 10 is used. , 17b and the inner space side of the first latching claw side portion 16d, the upper end portion of the peripheral side wall 12 has a length that can be accommodated with a slight gap. Further, of the second hook 17, the width of the side part (one second side part) 17 a that comes into contact with the rotation restricting piece 22 in use is the width of the horizontal side part 16 c. Is almost the same. On the other hand, the width of the remaining side part (the other second side part) 17b is shorter than them.

  The lock means 18 has a pin latching structure in which the lock pin 20 can be inserted and removed in series in the long hole 16 f of the first hook 16 and the pin hole 17 e of the second hook 17. Specifically, a short bifurcated bracket 24 having a tapered shape protrudes on the opposite side of the base portion of one second side portion 17a from the side facing the first hook 16. Yes. A short shaft 25 is laid across the tip of the bifurcated bracket 24. A shaft support ring (not shown) protruding from the back surface of the lock release lever 26 for pulling out the lock pin 20 from both the pin holes 16f and 17e is supported at the center of the short shaft 25. Near the middle portion of the lock pin 20 in the length direction, a short connecting pin 27 is inserted through both ends. The tip of the lock release lever 26 is disposed on the rotation pin 19 side of the second hook 17.

  The two ends of the lock release lever 26 are pivotally supported at both ends of the connecting pin 27. A pair of coil springs 28 for inserting the lock pin 20 into the pin hole 17e of the second hook 17 are always mounted on both sides of the short shaft 25 (FIGS. 6a and 6b). One end portions of both coil springs 28 are fixed to the back side of the lock release lever 26, respectively. On the other hand, the other end portions of the two coil springs 28 are fixed to both sides of the projecting portion of the bifurcated bracket 24 of the second hook 17. The lock pin 20 is unlocked by pushing the tip of the lock release lever 26 toward the second hook 17 against the spring force of the coil springs 28 (FIGS. 7a and 7b). That is, the lock release lever 26 rotates around the short shaft 25 to move the lock pin 20 in the direction of pulling out from the pin hole via the connecting pin 27.

Next, a method of using the safety belt rope fastener 10 according to the first embodiment of the present invention will be described.
As shown in FIG. 2, when the rope 15 of the safety belt 14 worn by the operator is hooked to the angle steel 13 on the outer peripheral wall of the floating roof tank 11, first, both the second side portions 17 a , 17b, the second hook 17 is hooked on the angle steel 13 from the bending direction of the angle steel 13 with respect to the peripheral side wall 12 so as to sandwich the angle steel 13 from above and below (FIG. 8). Thereafter, the first hook 16 is rotated around the rotation pin 19 so that the angle steel 13 is sandwiched between the inclined side portion 16b and the hooking claw side portion 16d from the thickness direction of the peripheral side wall 12. The first hook 16 is hooked on the angle steel 13 from above (FIG. 9).

  At this time, the rotation of the first hook 16 is restricted when one side portion 17 a of the second hook 17 abuts against the rotation restricting piece 22. At this time, the inverted L-shaped storage space 21 appears between the inner spaces of the hooks 16 and 17, and the pin hole 17e and the long hole 16f overlap each other. As a result, the lock pin 20 that has been constantly urged toward the first hook 16 side by the spring force of the two coil springs 28 becomes the pin hole 17e of the second hook 17 and the long hole 16f of the first hook 16. And the hooks 16 and 17 are automatically locked (FIGS. 6a, 6b and 9). As a result, the safety of the worker riding on the wind gutter W is ensured.

  Thereafter, the worker can walk on the wind garter W while ensuring safety. This is because the first hook 16 is a seven-shaped hook in the rope strap 10 for the safety belt, and the shaft support position of the second hook 17 with respect to the first hook 16 is set to the inclined side portion 16b and the horizontal side portion 16c. This is because it is in the vicinity of the connecting part. Specifically, the safety belt along the angle steel 13 between the inner space of the first hook 16 and the inner space of the second hook 17 in the middle of the relative rotation of the hooks 16 and 17. Since the hooks 16 and 17 are pivotally supported at a position where the inverted L-shaped storage space 21 that allows the rope stopper 10 to slide is revealed, the rope 15 is firmly fixed to the angle steel 13. In this state, the operator can freely move in the length direction of the angle steel 13.

  On the other hand, when the lock pin 20 is unlocked, the tip of the lock release lever 26 is pushed into the second hook 17 against the spring force of the coil springs 28 (FIGS. 7a and 7b). Thereby, the lock release lever 26 rotates around the short shaft 25, and the lock pin 20 is pulled out from the long hole via the connecting pin 27.

  As described above, when the safety band rope hook 10 is used, the hooking directions of the hooks 16 and 17 with respect to the angle steel 13 are different from each other by about 90 °, and the locking means 18 can maintain this angular relationship. Since both the hooks 16 and 18 are configured to be coupled, the rope 15 can be securely hooked to the angle steel 13 using the safety band rope hook 10. Moreover, the hooking work and the hook releasing work of the safety band rope hooking tool 10 with respect to the angle steel 13 are facilitated. Furthermore, since the costly bulky roller is not used as in the prior art, the cost of the safety band rope latch 10 can be reduced.

In addition, since the first hook 16 and the second hook 17 are each made of a plate material, the safety band rope stopper 10 is light and easy to carry.
Furthermore, since the first hook 16 is a seven-shaped hook and the rope 15 is fixed to the lower portion of the inclined side portion 16b, the inclined side portion 16b is For example, the lower portion of the inclined side portion 16b is arranged on the side of the peripheral side wall 12 as compared with a corresponding portion of a simple U-shaped hook not having the inclined side portion 16b. That is, the 7-shaped hook can cover the angle steel 13 in a wider range in the circumferential direction of the angle steel 13 than a simple U-shaped hook. As a result, the first hook 16 is difficult to come off from the angle steel 13.

  Moreover, since the first hook 16 has a seven-letter shape that covers the angle steel 13 from above, when the rope 15 is pulled to the safety belt 14 side for some reason during use, the rope 15 The vicinity of the distal end abuts against the outer end of the angle steel 13, and the rope 15 is tensioned in a bent state with the abutment position as a fulcrum. In this case, the bending fulcrum of the rope 15 is the one in which the outer peripheral end of the angle steel 13 is simply cut in the thickness direction of the angle steel 13 (general-purpose angle steel). The upper and lower corners are the upper and lower parts.

  As a result, the safety band rope fastener 10 using the seven-shaped hook is less likely to come off the angle steel 13 of the first hook 16. If a simple U-shaped hook is used as the first hook 16, the bending fulcrum of the rope 15 is only at one place on the upper corner of the outer periphery of the angle steel 13. Therefore, the first hook 16 is easily detached from the angle steel 13 as compared with the seven-shaped hook.

Further, the first hook 16 is a seven-shaped hook, and the reverse L-shaped storage space 21 appears between the inner spaces in the middle of the relative rotation of the hooks 16 and 17. Since the second hook 17 is hooked to the angle steel 13, the lower end portion of the inclined side portion 16b comes into contact with the wall plate, and then the second hook 17 is further hooked. By moving forward, the first hook 16 rotates around the shaft support portion with the second hook 17 and automatically hooks the first hook 16 so as to cover the angle steel 13 from above. You can also. Moreover, the hooks 16 and 17 are automatically coupled by the locking means 18 simultaneously with the hooking.
Further, since the pin latching structure is adopted as the locking means 18, the structure of the locking means 18 is simplified, and the locking means 18, and consequently the safety belt rope latching tool 10, can be manufactured easily and inexpensively.

It is a perspective view of the rope fastener for safety belts concerning Example 1 of this invention. It is a schematic front view which shows the use condition of the rope fastener for safety belts based on Example 1 of this invention. It is a top view including the partially broken part of the rope fastener for safety belts concerning Example 1 of this invention. It is a front view of the 1st hook which comprises a part of rope stopper for safety belts concerning Example 1 of this invention. It is a front view of the 2nd hook which comprises a part of rope stopper for safety belts concerning Example 1 of this invention. It is a principal part expanded side view containing the partial cross-section part which shows the latching state of both hooks by the locking means which comprises a part of rope stopper for safety belts based on Example 1 of this invention. It is a principal part enlarged plan view containing the partial cross-section part which shows the latching state of both hooks by the locking means which comprises a part of rope stopper for safety belts based on Example 1 of this invention. It is a principal part expanded side view including the partial cross-section part which shows the latch release state of both hooks by the locking means which comprises a part of rope stopper for safety belts concerning Example 1 of this invention. It is a principal part enlarged plan view containing the partial cross-section part which shows the latch release state of both hooks by the locking means which comprises a part of rope clamp for safety bands which concerns on Example 1 of this invention. It is a front view including the partial cross section which shows the latching state of the 2nd hook which comprises a part of rope securing device for safety belts based on Example 1 of this invention. It is a front view containing the partial cross-section part which shows the latching state of the 1st hook which comprises a part of rope stopper for safety bands which concerns on Example 1 of this invention.

Explanation of symbols

10 Safety belt rope fasteners,
11 Floating roof tank (structure),
12 peripheral side wall (wall board),
13 Angle steel (flange),
14 Safety belt,
15 ropes,
16 First hook,
16b inclined side part,
16c horizontal side,
16d latching claw side,
16f pin hole,
17 Second hook,
17e long hole (pin hole),
18 Locking means,
19 Rotating pin,
20 Lock pin,
21 Reverse L-shaped storage space.

Claims (3)

A safety band rope hook for hooking a rope connected to a safety band on a flange bent in a substantially thickness direction of the wall board at the upper end of the wall plate of the structure,
One of the first side sides has a structure in which one end of a pair of first side portions separated in an opposing state is connected to each other by a first back side portion so as to be substantially U-shaped. A first hook hooked on the flange from above so that the rope is connected to the portion and the flange is sandwiched between the first side portions from the thickness direction of the wall plate;
One end of a pair of second side portions that are spaced apart from each other in a facing state has a structure in which the second back side portion is connected so as to be substantially U-shaped as a whole, and both second side portions A second hook that is hooked to the flange from the bending direction of the flange with respect to the wall plate so as to sandwich the flange from above and below,
A safety band rope hooking device comprising: a locking means for coupling both hooks so as to maintain the hooking state of the first hook with respect to the flange and the hooking state of the second hook with respect to the flange. Both the first hooks are made of plate material, and one of the first side portions gradually inclines toward the other first side portion toward the other end opposite to the one end. The other first side portion is shorter in length than the one first side portion and can be hooked on the inside of the structure of the upper end portion of the wall plate,
The second hook is made of a plate material, and the second back side portion is pivotally supported in the vicinity of a connecting portion between the first side side portion and the back side portion via a rotation pin.
The locking means is provided between the first hook and the second hook, and between the inner space of the first hook and the inner space of the second hook, the flange and the 2. The safety according to claim 1, wherein the hooks are coupled to each other at a position where an inverted L-shaped storage space capable of storing a connecting portion with a flange of the wall plate with a slight gap is provided. Rope hook for obi.   The safety band rope according to claim 1 or 2, wherein the lock means has a pin latching structure in which a lock pin is inserted and removed in series in a pair of pin holes respectively formed in both hooks. Hook.

Images