JP5483099B2 - Safety block mounting jig - Google Patents

Description

  The present invention relates to a safety block mounting jig for mounting a safety block to an opening of a road surface when a predetermined excavation work is being performed on the road surface.

  When carrying out pipe work such as installing various pipes in the ground on the road surface, excavation work is often performed on the road surface.

  This excavation work is to carry out various constructions according to the site, but generally, the following construction processes are carried out in stages.

A. Pavement cutting process to cut the pavement at the site to be excavated B. Excavation process to remove the pavement and excavate to a predetermined depth C. Laying process of pipes etc. to install pipes etc. in the excavated ground D. Excavated The backfilling process of excavation part which puts soil in the part and backfills while applying pressure E. Road surface restoration process of paving the road surface

  In such excavation work, as shown in FIG. 15, the worker S working on the underground side leans a ladder 102 against the opening 101 on the road surface, and descends to the underground side through the ladder 102. It was.

  However, when the worker S ascends and descends only through such a ladder 102, there is a risk that the worker S will accidentally fall off the ladder 102, for example, by sliding his / her foot. Therefore, as a measure for preventing the worker S from falling, it is desired to install a safety block 103 on the opening 101 side of the road surface.

  The safety block 103 prevents the fall even if the worker S is going up and down via the ladder 102 even if the worker S is about to fall by sliding his / her foot. This is to prevent this.

  For example, as shown in FIG. 16, the general safety block 103 includes a case main body 105 and a wire rope 104 drawn out from the case main body 105.

  The wire rope 104 is wound around a predetermined drum accommodated in the case main body 105, and can be pulled out from the case main body 105 by rotation of the drum and pulled back into the case main body 105. .

  A hook 106 is attached to the distal end portion of the wire rope 104 to be hooked on the safety belt 112 worn by the worker S. A fixing ring 107 is attached to the upper part of the case body 105.

  The safety block 103 is configured such that when the worker S moves up and down the ladder 102 at a normal speed, the wire rope 104 is automatically pulled out from the case body 105 and is pulled back to the case body 105 so that the worker The wire rope 104 does not get in the way when S moves up and down.

  However, when an operator falls from the ladder 102 for some reason and the wire rope 104 is pulled out of the case body 105 vigorously, the case body 105 is pulled out of the wire rope 104 by about 25 cm, for example. At this point, the feeding of the wire rope 104 is stopped and the worker S is operated to prevent the worker S from dropping further.

  As described above, the safety block 103 is indispensable as a means for ensuring the safety of the worker S when moving up and down via the ladder 102. For example, as shown in FIG. In 101, there is no preferred place to install the safety block 103 so as to be suspended above the opening 101.

  Therefore, at work sites, for example, as shown in FIG. 17, measures are taken to provide a fence around the opening 101 on the road surface.

  This fence is formed, for example, by fixing a plurality of standing pillars 108 around the opening 101 on the road surface and attaching a horizontal member 110 between the standing pillars 108 via a predetermined clamp 109. . For example, the horizontal members 110 are arranged in two upper and lower stages at a predetermined interval.

  Then, the upper end portion of the ladder 102 is leaned against the upper horizontal member 110, and the ladder 102 is fixed to the upper horizontal member 110 using a predetermined belt member 111. In such a situation, for example, as shown in FIG. 18, the safety ring 103 is horizontally mounted by hooking the fixing ring 107 of the safety block 103 on the upper horizontal member 110 located in the vicinity of the ladder 102. It is installed so as to be suspended from the material 110.

  When the worker S moves up and down the ladder 102, as shown in FIG. 18, the worker S pulls out the wire rope 104 from the safety block 103, hooks the hook 106 on the safety belt 112 that he / she is wearing, and Is secured.

  In addition, as shown in FIG. 19, there is a technique in which a master rope 203 is arranged on the PC floor board 200 and a safety belt is attached to the master rope 203. Specifically, a plurality of pillars 202 are fixed on the PC floor plate 200 by using bolt members 201, and a master rope 203 is tied to the upper end of each pillar 202, and a safety belt is attached to the master rope 203. It is attached.

Japanese Patent Laid-Open No. 10-72939

  However, the conventional method of installing the safety block 103 shown in FIG. 18 has the following adverse effects.

  The conventional installation method of the safety block 103 is that the fixing ring 107 of the safety block 103 is hooked on the upper horizontal member 110 which is a member forming a fence, so that the worker S moves to the ladder 102 side. The horizontal member 110 that forms the fence becomes an obstacle.

  For this reason, the worker S has to step up and straddle over the upper horizontal member 110, and bends his body to dive between the horizontal members 110 arranged in the upper and lower two stages, which is unnatural. Because the posture was forced, the worker S became tired.

  Moreover, since the inside of the fence is the opening 101 of the road surface, the worker S grabs the ladder 102 located inside the fence with his / her hand in an unnatural posture and puts his / her foot on it. There is a risk of falling accidentally.

  Further, when the worker S who has climbed the ladder 102 descends to the outside (road surface side) of the fence, the worker S raises his leg while being in an unstable state where his / her hand or leg is placed on the ladder 102. The worker S had to be fatigued because he had to straddle the horizontal member 110 and bend his body and dive between the horizontal members 110.

  In addition, when the worker S moves to the ladder 102 side or when the worker S leaves the ladder 102, a careful operation is required, so that the entire work time is also long.

  On the other hand, in the method of placing the master rope 203 on the PC floor board 200 shown in FIG. 19 and attaching a safety belt to the master rope 203, when this technique is adopted for the opening 101 excavated from the road surface, the master rope 203 is attached to the road surface. As a result, the worker S is obstructed when the worker S moves to the ladder 102 side.

  In addition, when the worker S accidentally falls, there is no structure that can withstand a large load that firmly supports the weight of the worker S and prevents the fall. The safety block 103 as a means for ensuring the safety of the worker S at the time of raising and lowering cannot be a target to be installed.

  Therefore, the present invention was created in view of the existing circumstances as described above, and a safety block is simply and securely attached to the opening of the road surface to ensure the safety of the worker when ascending and descending via the ladder. And a safety block mounting jig that does not impose an unreasonable posture when the worker moves to the ladder side while being positioned on the opening side or when the worker leaves the ladder. For the purpose.

A safety block mounting jig according to the present invention includes a safety member including a base member disposed on one end side of an opening on a road surface, a safety block mounting member provided continuously with the base member, and an opening on the road surface. It is placed between the foundation member arranged on the end side, the handrail jig composed of the handrail member connected to the foundation member, and the foundation member of the safety block fixture and the foundation member of the handrail jig. It is composed of a jack base member that is fixed in a state, and the safety block mounting tool and the basic member of the handrail jig are both a base plate, a rod-like body fixed to the upper surface of the base plate, and a side surface of the base plate downward. It is formed from a hanging plate that extends toward the surface, and is installed so that the foundation member of the safety block fixture and the foundation member of the handrail jig face each other at the corner of the opening on the road surface. By being pressed against the end of the jack base member, it solved the problem also described above.

  Furthermore, the hanging plate of the foundation member has a length that reaches the roadbed layer beyond the asphalt layer in the opening of the road surface, thereby solving the above-described problem.

  The mounting member for the safety block is formed of a hanging member having a predetermined length and a horizontal member that is connected to the upper end portion of the hanging member, and a base member is formed on the lower end portion of the hanging member. The problem mentioned above was solved by having a long hole for introducing a rod-shaped body and having a mounting portion for a safety block at the tip of the horizontal member.

  In addition, when the safety block is hung from the safety block mounting part, the hook of the wire rope pulled out from the safety block is positioned at the part of the safety belt worn by the worker. The above-mentioned problem was solved by having the height to be used.

  In addition, the handrail member of the handrail jig is formed into a rectangular frame shape as a whole by a hanging member having a predetermined length and a U-shaped frame member fixed to the hanging member. In addition, the above-described problem has been solved by having a long hole for introducing a rod-like body that forms a base member, and providing a U-shaped frame member of the hanging member with a rod-like gripping member.

  In addition, the problem mentioned above was solved by connecting the hanging member of the safety block fixture and the hanging member of the handrail jig with a rod-shaped reinforcing rod.

  A safety block mounting jig according to the present invention is provided between a base member disposed on one end side of an opening portion on a road surface, a safety block mounting member including a safety block mounting member provided continuously with the base member, and an opening portion on a road surface. Since it is composed of a jack base member that is disposed and fixed with the other end side of the opening and a part of the foundation member in a stretched state, a safety block mounting jig for attaching a safety block is provided at the opening of the road surface. Can be fixed in a preferable state.

  Specifically, the base member is formed of a base plate, a rod-like body fixed to the upper surface of the base plate, and a hanging plate extending downward from the side surface of the base plate. Since the end portion of the jack base member is in pressure contact with the hanging plate in a state where is installed at the corner portion of the opening portion, the foundation member can be reliably fixed to the corner portion of the opening portion of the road surface.

  The safety block mounting jig according to the present invention includes a base member disposed on one end side of the opening on the road surface, a safety block mounting member including a mounting member for the safety block connected to the base member, and an opening on the road surface. A base member disposed on the other end of the rail, a handrail jig composed of a handrail member connected to the base member, and a safety block mounting base member and a handrail jig base member disposed between openings in the road surface Therefore, the safety block mounting tool for attaching the safety block and the handrail jig can be fixed in a preferable state at the opening portion of the road surface.

  Specifically, the basic members of the safety block fixture and the handrail jig are each a base plate, a rod-like body fixed to the upper surface of the base plate, and a hanging plate extending downward from the side surface of the base plate The base member of the safety block fixture and the base member of the handrail jig are installed at the corners of the opening on the road surface so that they face each other. Therefore, the base member of the safety block fixture and the base member of the handrail jig can be reliably fixed at the corner of the opening of the road surface.

  Furthermore, since the hanging plate of the foundation member has a length that reaches the roadbed layer beyond the asphalt layer in the opening portion of the road surface, when the end portion of the jack base member is press-contacted, in the opening portion of the road surface The foundation member can be fixed in a more stable state.

  The mounting member for the safety block is formed of a hanging member having a predetermined length and a horizontal member that is connected to the upper end portion of the hanging member, and a base member is formed on the lower end portion of the hanging member. Since it has a long hole for introducing the rod-shaped body, the long hole of the hanging member is applied to the rod-shaped body forming the base member fixed to the corner of the opening of the road surface, and the rod-shaped body is placed in the long hole When is introduced, the attachment member of the safety block can be securely fixed to the base member.

  Further, since the mounting portion of the safety block is provided at the front end portion of the horizontal member, the safety block can be installed to be suspended through the mounting portion.

  In addition, when the safety block is suspended from the mounting portion of the safety block, the hook member of the wire rope pulled out from the safety block is positioned at the portion of the safety belt worn by the worker. Due to the height, the hook of the safety block can be easily hooked on the safety belt while the worker is standing on the road surface.

  Thus, according to the safety block mounting jig according to the present invention, it is not necessary to form a fence that surrounds the entire opening of the road surface as in the prior art, so the vicinity of the ladder leaning on the opening is opened. Thus, it is possible to form a so-called worker entrance. At this time, since the ladder itself is not leaned against the horizontal member that forms the fence as in the prior art, it is not necessary to protrude long upward from the opening of the road surface, and the upper end of the ladder itself is It can be fixed in the vicinity.

  And at this doorway, there is no obstacle such as a horizontal member that forms a fence, so when the worker moves to the ladder side, the worker raises his feet and straddles the obstacle. It is possible to reduce the worker's fatigue without being forced to have an unnatural posture to bend the body and avoid obstacles. Moreover, the worker can move quickly to the ladder side.

  In addition, since workers are not forced to take an unnatural posture to avoid obstacles, they can securely put their feet on the ladder fixed in the opening and grasp the ladder with their hands. Eliminates the risk of falling accidentally.

  Also, when the worker who has climbed the ladder descends to the outside (road surface side) of the fence, the worker can leave the ladder quickly without being forced to have an unnatural posture to avoid an obstacle.

  As described above, according to the present invention, the worker can quickly move to the ladder side while securing his / her own safety by the safety block, and can also quickly leave the ladder.

  In addition, since the safety block fixture is fixed to the corner of the opening, the opening excavated from the road surface is not blocked more than necessary. In addition, since the safety block fixture is securely fixed to the corner of the opening, when the worker accidentally falls, the safety block firmly supports the weight of the worker and prevents the fall, It is possible to ensure the safety of workers when raising and lowering through the ladder.

  In addition, when the safety block fixture for attaching the safety block and the handrail jig are fixed at the opening of the road surface, for example, the worker who has climbed the ladder grasps the safety block fixture with the right hand, and the handrail jig You can grab with your left hand and get off the ladder in a stable state.

  Similarly, when the worker moves to the ladder side, the safety block secures his / her safety and turns backward with the back facing the opening, holding the safety block mounting tool with the right hand and handrail treatment at the same time. Grab the tool with your left hand, put your foot on the ladder in a stable state, then grab the ladder with your hand and quickly move to the ladder side, eliminating the risk of operators falling accidentally .

  Furthermore, the handrail member of the handrail jig is formed into a rectangular frame shape as a whole by a hanging member having a predetermined length and a U-shaped frame member fixed to the hanging member. Since it has a long hole for introducing a rod-shaped body that forms the foundation member, the elongated hole of the hanging member is applied to the rod-shaped body that forms the foundation member fixed to the corner of the opening on the road surface, When the rod-shaped body is introduced into the long hole, the handrail member can be reliably fixed to the base member.

  In addition, since the U-shaped frame member of the hanging member is provided with a rod-shaped gripping member, for example, the worker who has climbed the ladder grips the safety block mounting tool with the right hand, and the gripping member of the handrail jig You can grab with your left hand and get off the ladder in a stable state.

  Similarly, when moving to the ladder side, the safety block secures its own safety, it faces backward with its back facing the opening, and the safety block mounting tool is gripped with the right hand and at the same time the handrail jig is gripped. You can grab the member with your left hand, put your foot on the ladder in a stable state, and then grab the ladder with your hand. Eliminated.

  In addition, since the suspended member of the safety block fixture and the suspended member of the handrail jig are connected by a rod-shaped reinforcing rod, the safety block fixture arranged at the corner of the opening on the road surface The handrail jig can be securely fixed.

  Further, by fixing the upper end portion of the ladder to the reinforcing rod, it is possible to reliably prevent the occurrence of a situation where the ladder falls down. Furthermore, it is possible to open the upper part of the ladder to form a so-called worker doorway, so that the worker can quickly move from the road surface side to the ladder side and from the ladder side to the road surface side. Realized.

It is a perspective view which shows the use condition of a safety block attachment tool and a handrail jig. It is a disassembled perspective view which shows the structure of a safety block fixture. It is a perspective view which shows the structure of a safety block fixture. It is sectional drawing which shows the structure of a safety block fixture. It is a perspective view which shows the fixed state of the safety block fixture in the opening part of a road surface. It is a disassembled perspective view which shows the structure of a handrail jig. It is a perspective view which shows the structure of a handrail jig. It is a perspective view which shows the state which has arrange | positioned the handrail jig | tool at the opening part of a road surface. It is a perspective view which shows the fixed state of the handrail jig in the opening part of a road surface. It is a perspective view which shows the state which has arrange | positioned the safety block attachment tool and the handrail jig to the opening part of a road surface. It is a perspective view which shows the state which has arrange | positioned the safety block attachment tool and the handrail jig in the opening part of a road surface, and has been made into the stretched state by the both ends of the jack base member. It explains the state of tension by the jack base member, (a) is a side view showing a state in which the jack base member is disposed between the safety block mounting tool and the handrail jig, (b) is both ends of the jack base member It is a side view which shows the state which has made the safety block attachment tool and the handrail jig | tool into the stretched state, and is fixed by the part. It is a perspective view which shows the state which has connected the base member of the safety block fixture, and the base member of a handrail jig with the reinforcement rod. The base member provided with a plurality of protrusions on the hanging plate and the jack base member are shown in a stretched state. (A) is an exploded perspective view of the state in which the hanging plate of the base member and the pressing body of the jack base member are separated from each other. FIG. 4B is a perspective view of a state in which the pressing body of the jack base member is in pressure contact with the hanging plate of the base member. It is a perspective view which shows the state which leans the ladder against the opening part of the road surface. It is a perspective view which shows the structure of a safety block. It is a perspective view which shows the state which provided the fence around the opening part of the road surface, and leaned the ladder against this fence. It is a perspective view which shows the state which provided the fence around the opening part of the road surface, attached the safety block to this fence, and the operator is raising / lowering the ladder. It is a side view which shows the method of fixing a some pillar on a PC floor board, tying a master rope to the upper end part of each pillar, and attaching a safety belt to this master rope.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated in detail with reference to drawings.

  As shown in FIGS. 11, 12 (a) and 12 (b), the present invention includes a base member 20 disposed on one end side of the opening 101 on the road surface, and a safety block attachment member 4 provided continuously with the base member 20. A safety block fixture 40 and a jack base member 30 disposed between the opening 102 on the road surface and fixing the other end of the opening 102 and a part of the foundation member 20 in a stretched state. This is a block mounting jig 1.

  Further, as shown in the figure, it is more preferable that the safety block mounting jig 1 is configured by adding the handrail jig 70 to form the safety block mounting jig 1 including the handrail jig 70.

  The base member 20 that forms the safety block fixture 40 is installed at the corner of the opening 102 on the road surface. As shown in FIG. 2, the base plate 21 has a rectangular shape and a substantially central portion on the upper surface of the base plate 21. A rod-like body 22 fixed to the portion and a rectangular hanging plate 23 extending downward from one side surface in the longitudinal direction of the pedestal plate 21 are formed.

  As shown in FIGS. 12 (a) and 12 (b), the hanging plate 23 of the foundation member 20 has a roadbed layer T exceeding the asphalt layer A when the foundation member 20 is installed at the corner of the opening 102 on the road surface. Has a length to reach.

  The rod-like body 22 may be, for example, any one of a cylindrical shape and a columnar shape as long as the rod-like body 22 has a strength capable of continuously providing the mounting member 4 of the safety block.

  As shown in FIGS. 2 and 3, the attachment member 4 of the safety block 103 connected to the rod-like body 22 of the base member 20 is connected to the hanging member 2 having a predetermined length and the upper end of the hanging member 2. The horizontal member 3 is shorter than the suspended member 2 provided.

  The horizontal member 3 is fixed so as to maintain an angle of 90 degrees with respect to the hanging member 2. In addition, the mounting portion 5 of the safety block 103 is provided at the distal end portion of the horizontal member 3. As shown in FIG. 4, the attachment portion 5 is formed by a ring portion and a male screw rod portion 6 fixed to the ring portion.

  Then, the male threaded rod portion 6 is inserted from below into a predetermined hole provided in the distal end portion of the horizontal member 3, and the nut of the male threaded rod portion 6 protrudes from the upper portion of the lateral member 3. The attachment portion 5 is fixed to the horizontal member 3 by screwing the member 7.

  When the fixing ring 107 of the safety block 103 is hooked on the mounting portion 5, the mounting member 4 of the safety block 103 is installed by hanging the safety block 103 in a cantilever form as shown in FIG. It becomes.

  In addition, a plurality of hooks 8 formed in a U shape are fixed to the peripheral surface of the hanging member 2 forming the attachment member 4 of the safety block 103.

  Moreover, as shown in FIG. 2, the lower end part of the suspending member 2 has the long hole 9 which introduce | transduces the rod-shaped body 22 which forms the base member 20. As shown in FIG. As shown in FIG. 4, the long hole 9 is formed by forming the entire hanging member 2 and the horizontal member 3 into a cylindrical shape, and forming a cylindrical inner peripheral portion in the lower portion of the hanging member 2 as a long hole 9. We are using.

  Then, as shown in FIGS. 2 and 3, the lower end portion of the hanging member 2 is applied to the rod-like body 22 forming the foundation member 20, and the rod-like body 22 is introduced into the long hole 9, thereby The attachment member 4 of the safety block is attached to 20.

  In addition, as shown in FIG. 2, two screw holes 10 are provided in the lower portion of the hanging member 2. The screw hole 10 is a portion into which a predetermined bolt 11 is screwed. 3 and 4, in the state where the rod-like body 22 is introduced into the long hole 9 of the hanging member 2, the bolt 11 is screwed into the screw hole 10 of the hanging member 2, and the tip of the bolt 11 is inserted. The abutting member 2 is securely fixed to the rod-shaped body 22 of the base member 20 by bringing the rod-shaped body 22 into contact with the rod-shaped body 22.

  Furthermore, when the safety block 103 is suspended from the mounting portion 5 of the horizontal member 3, the safety block mounting member 4 that is connected to the foundation member 20 has the hook 105 of the wire rope 104 that is pulled out from the safety block 103. Since the safety belt 112 is provided with a height that is positioned on the part of the safety belt 112, the hook 105 of the safety block 103 can be easily attached to the safety belt 112 while the worker S is standing on the road surface. Can be hung on.

  11 and 12A, the jack base member 30 is disposed in the opening 101 with the base plate 21 and the hanging plate 23 of the base member 20 installed at the corners of the opening 101. Then, the base member 20 is fixed to the opening 101.

  As shown in FIGS. 11 and 12A, the jack base member 30 includes a main pipe 31 having a predetermined length and pressing bodies 32 disposed at both ends of the main pipe 31.

  Both end portions of the main pipe 31 are formed in a cylindrical shape. At both ends of the main pipe 31, a rotation operation unit 34 having a handle 33 is provided. A female screw is provided on the inner peripheral surface of the rotation operation unit 34.

  The pressing body 32 is formed by, for example, a rectangular flat plate 35 and a rod-shaped male screw member 36 fixed to the flat plate 35. The male screw member 36 of the pressing body 32 is attached to both end portions of the main pipe 31 so as to freely advance and retract.

  Specifically, the male screw member 36 is accommodated in the end portion of the main pipe 31 in a state where the male screw member 36 of the pressing body 32 is screwed into the female screw portion of the rotation operation portion 34 in the main pipe 31. ing.

  Therefore, the male screw member 36 of the pressing body 32 moves in a direction protruding from the main pipe 31 by an operation of rotating the rotation operation unit 34. Further, the male screw member 36 of the pressing body 32 can be moved in the direction of being accommodated in the main pipe 31 by an operation of rotating the rotation operation unit 34 in the reverse direction.

  Using the jack base member 30, the base member 20 is fixed to the opening 101. At this time, as shown in FIG. 11 and FIG. 12A, the base member 20 has the pedestal plate 21 placed on the road surface, and the hanging plate 23 is in contact with the hanging wall of the opening 101. The drooping plate 23 reaches the roadbed layer T beyond the asphalt layer A.

  In this state, as shown in FIG. 12A, the jack base member 30 is disposed in the opening 101, and the flat plate 35 of the pressing body 32 positioned on one end side of the jack base member 30 is suspended from the opening 101. The flat plate 35 of the pressing body 32 that hits the wall and is located on the other end side of the jack base member 30 hits the hanging plate 23 of the base member 20.

  Next, the rotation operation portion 34 of the jack base member 30 is rotated via the handle 33, and the male screw member 36 of the pressing body 32 is forcibly moved in a direction protruding from the main pipe 31.

  As a result, as shown in FIG. 12B, the flat plates 35 of the individual pressing bodies 32 come into pressure contact with the hanging wall of the opening 101 and the hanging plate 23 of the base member 20 to form a so-called stretched state. The base member 20 is securely fixed to the corners of 101.

  As described above, the safety block mounting jig 1 according to the present invention includes the base member 20, the safety block mounting tool 40 including the safety block mounting member 4 connected to the base member 20, and the jack base member 30. However, as shown in FIGS. 11 and 12A and 12B, it is more preferable that the handrail jig 70 is provided.

  The handrail jig 70 includes a base member 20 disposed on the other end side of the opening 101 on the road surface, and a handrail member 50 provided continuously with the base member 20.

  As shown in FIG. 8, the base member 20 of the handrail jig 70 is installed at a corner of the opening 102 on the road surface. As shown in FIGS. 6 and 7, the base plate 21 and the base plate 21 It is formed of a rod-like body 22 fixed to the upper surface and a hanging plate 23 extending downward from one side surface of the base plate 21.

  The drooping plate 23 of the foundation member 20 exceeds the asphalt layer A when the foundation member 20 is installed at the corner of the opening 102 on the road surface, as shown in FIGS. It has a length to reach the roadbed layer T.

  In addition, since the structure of the base member 20 of the handrail jig 70 is the same as the structure of the base member 20 of the above-described safety block fixture 40, the description thereof is omitted by attaching the same reference numerals to both.

  As shown in FIGS. 6 and 7, the handrail member 50 provided continuously with the base member 20 has a rectangular shape as a whole by a hanging member 51 having a predetermined length and a U-shaped frame member fixed to the hanging member 51. It is formed in a frame shape.

  The U-shaped frame member is formed by a horizontal member 52 extending laterally from an upper end portion and a lower portion of the hanging member 51 and a vertical member 53 that continuously connects the end portions of the horizontal member 52. . Further, a bar-shaped gripping member 54 is provided on the U-shaped frame member of the hanging member 51.

  As shown in FIGS. 6 and 7, the gripping member 54 includes an inclined member 55 having a predetermined length, and has a horizontal member 56 extending laterally at a lower end portion thereof. A connecting piece 57 bent upward is provided at the front end of the horizontal member 56. Further, the inclined member 55 has a short horizontal member 58 that extends laterally at the upper end portion thereof. A connecting piece 59 bent downward is provided at the front end of the horizontal member 58.

  The connecting pieces 57 and 59 of the gripping member 54 are fixed to the vertical member 53 of the U-shaped frame member, and the gripping member 54 is attached to the hanging member 51.

  A predetermined ring member 60 is attached to the vertical member 53 of the hanging member 51.

  Furthermore, as shown in FIG. 6, the lower end portion of the hanging member 51 constituting the handrail member 50 has a long hole 61 for introducing the rod-like body 22 that forms the base member 20 that forms the base member 20. .

  The long hole 61 forms the entire hanging member 51 in a cylindrical shape, and uses the cylindrical inner peripheral portion of the lower portion of the hanging member 51 as the long hole 61.

  Then, as shown in FIGS. 6 and 7, the lower end portion of the hanging member 51 is applied to the rod-shaped body 22 forming the foundation member 20, and the rod-shaped body 22 is introduced into the long hole 61, thereby The handrail member 50 is attached to 20.

  In addition, as shown in FIG. 6, two screw holes 10 are provided in the lower portion of the hanging member 51. 6 and 7, in the state where the rod-like body 22 is introduced into the long hole 61 of the hanging member 51, the bolt 11 is screwed into the screw hole 10 of the hanging member 51, and the tip of the bolt 11 is inserted. The abutting member 51 is securely fixed to the rod-like body 22 of the base member 20 by bringing the rod-like body 22 into contact with the rod-like body 22.

  The procedure for assembling the safety block mounting jig 1 and the handrail jig 70 to the opening 101 on the road surface will be described below.

  First, in the opening 101 on the road surface, two sets of the base members 20 are installed at the corners so as to face each other with a predetermined gap.

  Next, as shown in FIG. 10, the attachment member 4 of the safety block 103 is connected to one base member 20, and the handrail member 50 is connected to the other base member 20. At this time, the horizontal member 3 of the attachment member 4 of the safety block 103 and the horizontal member 52 positioned above the handrail member 50 are opposed to each other inward.

  Next, as shown in FIG. 11, the jack base member 30 is disposed between the base member 20 constituting the safety block fixture 40 and the base member 20 constituting the handrail jig 70, and the jack base member 30 is pressed. From the body 32, the base members 20 and 20 are stretched and fixed.

  Specifically, first, as shown in FIG. 12A, the jack base member 30 is disposed between the two base members 20. Next, as shown in FIG. 12B, the flat plate 35 of the pressing body 32 on one end side of the jack base member 30 is brought into contact with the hanging plate 23 of the base member 20 constituting the handrail jig 70, and the jack base member The flat plate 35 of the pressing body 32 on the other end side of 30 is brought into contact with the hanging plate 23 of the base member 20 constituting the safety block mounting tool 40.

  Next, the rotation operation portion 34 of the jack base member 30 is rotated via the handle 33, and the male screw member 36 of the pressing body 32 is forcibly moved in a direction protruding from the main pipe 31.

  As a result, the flat plates 35 of the individual pressing bodies 32 are in pressure contact with the hanging plate 23 of the base member 20 constituting the handrail jig 70 and the hanging plate 23 of the base member 20 constituting the safety block fixture 40, so-called tension. In this state, the base members 20 and 20 respectively installed at the corners of the opening 101 are securely fixed.

  At this time, as shown in FIG. 14A, four projections 12 are provided on the hanging plate 23 of the base member 20, while four holes 13 are provided on the flat plate 35 of the pressing body 32 of the jack base member 30, As shown in FIG. 14 (b), when the projections 12 of the hanging plate 23 can be inserted into the holes 13 of the flat plate 35 of the pressing body 32, the individual flat plates 35 of the jack base member 30 are placed on the hanging plate of the base member 20. The jack base member 30 does not fall when it hits 23, which is preferable.

  Specifically, after the individual flat plate 35 of the jack base member 30 is brought into contact with the hanging plate 23 of the base member 20, the rotation operation portion 34 of the jack base member 30 is rotated via the handle 33. The flat plate 35 can be smoothly pressed against the hanging plate 23 of the foundation member 20 constituting the handrail jig 70 and the hanging plate 23 of the foundation member 20 constituting the safety block fixture 40.

  Then, the safety block 103 is attached to the horizontal member 3 of the attachment member 4 so as to be suspended.

  Next, as shown in FIG. 13, the hanging member 2 of the safety block fixture 40 and the hanging member 51 of the handrail jig 70 are connected by a rod-shaped reinforcing rod 80.

  Both ends of the reinforcing rod 80 are fixed to both the hanging members 2 and 51 via a predetermined clamp 109, and the hanging member 2 of the safety block mounting tool 40 and the hanging member of the handrail jig 70. Each lower part of 51 is firmly connected.

  Next, as shown in FIG. 1, the upper end portion of the ladder 102 is leaned against the reinforcing rod 80, and the ladder 102 is fixed to the reinforcing rod 80 using a belt or the like.

  Along with such work, a plurality of standing pillars 108 are fixed around the opening 101 on the road surface, and a horizontal member 110 is attached between the standing pillars 108 via a predetermined clamp 109 to form a whole. Form a fence.

  And as shown in FIG. 1, the edge part of the horizontal member 110 is fixed to the suspending member 2 of the safety block attachment tool 40 through the predetermined clamp 109. Further, the end portion of the other horizontal member 110 is fixed to the hanging member 51 of the handrail jig 70 via a predetermined clamp 109.

  In this way, as shown in FIG. 1, the vicinity of the ladder 102 leaning on the reinforcing rod 80 is opened to form a so-called entrance / exit of the worker S.

  When the worker S moves to the ladder 102 side, as shown in FIG. 1, the hook 106 of the safety block 103 is hooked on the safety belt 112 attached to the worker S to secure his own safety. Above, facing backward with the back toward the opening 102 side, the safety block mounting jig 1 is grasped with the right hand, and the handrail jig 70 is grasped with the left hand at the same time. After that, the ladder 102 can be grasped by hand and can be quickly moved to the ladder 102 side.

  Also, when the worker S who has climbed the ladder 102 descends to the road surface side, he grasps the safety block mounting jig 1 with his right hand and at the same time grasps the handrail jig 70 with his left hand to lift his body and walk. In this state, it is possible to get off the ladder 102 quickly.

  The safety block mounting jig for the opening portion on the road surface according to the present invention has its own safety secured by the safety block at the opening portion of various road surfaces, and the worker quickly moves to the ladder side, It can be used widely as a thing that can be quickly separated from the ladder.

DESCRIPTION OF SYMBOLS S ... Worker A ... Asphalt layer T ... Subbase layer 1 ... Safety block mounting jig 2 ... Hanging member 3 ... Horizontal member 4 ... Safety block mounting member 5 ... Mounting tool 6 ... Male screw rod part 7 ... Nut member DESCRIPTION OF SYMBOLS 8 ... Hook 9 ... Long hole 10 ... Screw hole 11 ... Bolt 12 ... Protrusion 13 ... Hole 20 ... Base member 21 ... Base plate 22 ... Rod-like body 23 ... Drooping plate 30 ... Jack base member 31 ... Main pipe 32 ... Pressing body 33 ... Handle 34 ... Rotation operation part 35 ... Flat plate 36 ... Male screw member 40 ... Safety block attachment 50 ... Handrail member 51 ... Suspension member 52 ... Horizontal member 53 ... Vertical member 54 ... Grip member 55 ... Inclined member 56 ... Horizontal Mounting member 57 ... Connecting piece 58 ... Horizontal member 59 ... Connecting piece 60 ... Ring member 61 ... Long hole 70 ... Handrail jig 80 ... Reinforcement rod 101 ... Opening 102 ... Ladder 103 ... Safety block 104 Wire rope 105 ... casing body 106 ... hook 107 ... fixing rings 108 ... the pillar 109 ... clamp 110 ... horizontal member 111 ... belt member 112 ... safety belt 200 ... PC floorboard 201 ... bolt 202 ... pillar 203 ... lifeline

Claims (6)

  A base member disposed on one end side of the opening on the road surface, a safety block fixture including a safety block mounting member connected to the base member, a base member disposed on the other end side of the opening on the road surface, and a base member And a jack base member that is disposed between the opening on the road surface and that fixes the safety block fixture base member and the handrail jig base member in a stretched state. The basic members of the safety block fixture and the handrail jig are each composed of a base plate, a rod-like body fixed to the upper surface of the base plate, and a hanging plate extending downward from the side surface of the base plate, At the corner of the opening on the road surface, install the base member of the safety block fixture and the base member of the handrail jig so as to face each other, and press the end of the jack base member against the hanging plate of both base members Safety block mounting jig according to claim Rukoto. The safety block mounting jig according to claim 1, wherein the drooping plate of the foundation member has a length that reaches the roadbed layer beyond the asphalt layer in the opening of the road surface. The mounting member of the safety block is formed of a hanging member having a predetermined length and a horizontal member connected to the upper end portion of the hanging member, and a rod-like body forming a base member at the lower end portion of the hanging member The safety block mounting jig according to claim 1 or 2 , further comprising a safety block mounting portion at a distal end portion of the horizontal member. When the safety block is suspended from the safety block mounting section, the safety block mounting member has a height at which the hook of the wire rope pulled out from the safety block is positioned at the safety belt part worn by the worker. The safety block mounting jig according to claim 3 , comprising: The handrail member of the handrail jig is formed into a rectangular frame shape as a whole by a hanging member of a predetermined length and a U-shaped frame member fixed to the hanging member. The safety block mounting jig according to any one of claims 1 to 4 , further comprising a long hole for introducing a rod-like body forming the member, and a U-shaped frame member of the hanging member provided with a rod-like gripping member. . The safety block mounting jig according to claim 5 , wherein the hanging member of the safety block mounting tool and the hanging member of the handrail jig are connected by a bar-shaped reinforcing rod.

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