TW202026227A - Rope traction device especially used in a place without external power source - Google Patents

Abstract

The invention provides a rope traction device which is small and does not occupy space. A differential type gear reducer 5 provided on a support body 2 includes an input shaft 7 that is detachably connected to an output shaft of the rechargeable electric driver, and an output shaft 8 that is detachably coupled to a pulley 20 around which a rope is wound, and the rotation applied to the input shaft 7 is decelerated and transmitted to the output shaft 8. The support body 2 is provided with an inlet portion 32 and an outlet portion 33. The inlet portion 32 and the outlet portion 33 form an entrance passage and an exit passage of a rope wound around the pulley 20. The input shaft 7 of the gear reducer 5 is equipped with a ratchet mechanism and a release device that releases the restriction of the ratchet mechanism. The ratchet mechanism only allows forward rotation and prevents reverse rotation to restrict the entrance side of the rope from being pulled out. The support body 2 is provided with a freely openable and closable pulley cover, rope clamping portions 80 and 81, and a rope installation hole for assembling other ropes.

Description

Working method on the external surface of the building

The present invention relates to a rope traction device, in particular to a rope traction device that uses power to pull the rope.

When loading or unloading cargo between the ground and the roof of the building, hang the suspended cargo in advance on the lower end of the hanging rope that has been suspended from the hanger installed on the parapet on the roof, and borrow A rope hoisting device such as a winch installed on the roof winds and unwinds the other end side of the hanging rope to raise and lower the suspended cargo. However, the conventional rope hoisting device is a large-scale device provided with a motor drive unit and/or a winding drum, so it is difficult to install it on the roof. Moreover, when there is no commercial power supply on the roof, there is an inconvenience that the rope hoisting device cannot be used. [Prior Technical Literature] [Patent Literature]

[Patent Document 1]: Japanese Patent Application Laid-Open No. 6-206698.

[The problem to be solved by the invention]

In view of the above-mentioned problems of the prior art, the present invention aims to provide a rope traction device that is small and does not occupy space. Moreover, another purpose is to be able to be used in places where there is no commercial power supply equipment. [Means to solve the problem]

According to an embodiment of the present invention, a rope traction device is provided with: a differential reduction type deceleration device, an input shaft detachably connected to the output shaft of a rotary electric tool, and an output combined with a pulley for rope winding detachably The shaft, and decelerates the rotation applied to the input shaft and transmits it to the output shaft; the support body is equipped with deceleration devices; the inlet and outlet parts are arranged on the support and form the inlet and outlet of the rope wound around the pulley; and restrictions The device is arranged on the deceleration device or the support body to restrict the entrance side of the rope from being pulled out to the outside. [Invention Effect]

According to one embodiment of the present invention, since the rotary power tool can be used as the driving source to pull the rope, there is no need to install a driving source in the device, and because it is wound around the pulley for traction, the winding drum is not required, so that the device Overall small. Moreover, as a rotary electric tool, it is possible to use ordinary tools that can be carried for work, so there is no need to spend time preparing a special drive source. If the rotary power tool is a rechargeable type, there will be no trouble of winding the power cord, and it can also be used on the roof of a high-rise building where it is difficult to obtain commercial power. Furthermore, by using a small-sized differential reduction gear with a large reduction ratio, when the rope is pulled out from the entrance side to the outside while reversing the pulley in a state where the restriction device is released, a slow motion can be performed. Furthermore, according to an embodiment of the present invention, since the inlet and outlet are provided at intervals from the pulley, and a separation portion is provided between the inlet and outlet and the pulley to separate the inlet-side rope from the outlet-side rope, Therefore, it is possible to prevent the outlet-side rope from being entangled in the inlet side of the pulley when the pulley is rotated forward, and the inlet-side rope being entangled in the outlet side of the pulley when the pulley is reversed. Furthermore, according to an embodiment of the present invention, since the inlet portion and the outlet portion include the inlet portion and the outlet portion that are opposed to each other with an interval, they are formed so that the rope can be connected to the outside through the gap between the inlet portion and the outlet portion. The entry and exit between the entrance part and the entry and exit of the rope between the outside and the exit part facilitate the loading and unloading of the rope to the pulley, and because the pulley cover is provided with an obstruction part, the obstruction part is locked when it is closed. Entering the gap between the inlet and the outlet prevents the rope from falling off from the inlet or the outlet, so it can prevent the rope from falling off the inlet or the outlet during use and accidentally open the pulley cover. Furthermore, according to an embodiment of the present invention, since the support is provided with a retainer for the rope to be wound and fixed, the restriction device is released from the entrance to the outer side of the rope when tension is applied to the entrance side of the rope. When you want to move the rope from the entrance part to the outside, the rope on the exit side is wound and caught in the catch part in advance to prevent the rope from suddenly moving in the opposite direction when the restriction device is released. Moreover, by moving while slidingly contacting the catching portion, friction braking can also be exerted. Furthermore, according to an embodiment of the present invention, when it is desired to release the restriction on the movement of the rope from the entrance portion to the outside by the restriction device, the input shaft of the deceleration device is manually rotated forward and the pulley is slowly moved forward while using a manual rotating tool. It can be easily released by performing the release operation with the operation part while turning.

Hereinafter, the best mode of the present invention will be described based on examples. [Example 1]

Figure 1 is a perspective view of the appearance of a rope traction device according to an embodiment of the present invention. Figures 2 to 5 are a front view, a side view, a top view, and a rear view of the rope traction device. Figure 6 is a rope traction device with a pulley cover and hinge omitted Figure 7 is a side view of the rope traction device with the pulley cover omitted, Figure 8 is a perspective view of the rope traction device with the pulley cover and pulley omitted, and Figure 9 (1) is one of the locking members that lock the pulley cover A perspective view, (2) in Fig. 9 is a front view, (3) in Fig. 9 is a top view, (4) in Fig. 9 is a side view, Fig. 10 is a structural view of the restricting device in the rope traction device, Fig. 11 It is a partially omitted enlarged view of the limiting device, and FIG. 12 is an explanatory diagram of the function of the limiting device.

In these figures, the element number 1 is a power rope pulling device, which can pull the rope (here, the fiber rope. Refer to the element number 110 in Figures 15 and 16 by the driving force obtained by the rechargeable electric drive carried by the operator. ). In the rope pulling device 1, the symbol 2 is a plate-shaped support made of aluminum, and a circular opening 3 is formed near the center (refer to FIG. 8), and a rope mounting hole 4 as a rope mounting portion is formed on the lower side . Numeral 5 is a cylindrical (pancake-shaped) reduction gear mounted on the back side of the support 2, and includes: a cylindrical (pancake-shaped) reduction gear body 6 with a differential coaxial input shaft and output shaft Deceleration mechanism; an aluminum hermetic housing 9 that seals the deceleration device body 6 except for the input shaft 7 and output shaft 8; a restricting device 10, which is equipped on the back side of the hermetic housing 9 and restricts the reverse of the input shaft 7 It turns to restrict the pulling back of the entrance side of the rope; and an aluminum and disc-shaped outer cover 11 is installed on the peripheral end of the back of the airtight casing 9 and seals the main part of the restricting device 10. In addition, the restriction device 10 will be described later. The input shaft 7 is exposed in an opening 12 formed in the center of the outer cover 11.

As shown in FIG. 13, the input shaft 7 is attached to a cylindrical shaft hole 13 with a keyway 14, and a cylindrical shank 18 with a keyway 17 is mounted on a clamp (chuck) which is the output shaft of the cordless electric drive 15. ) 16, the key 19 is fitted into the key grooves 14 and 17 and the handle 18 is inserted into the shaft hole 13 to connect, and the input shaft 7 can be rotated by driving the cordless electric driver 15. The output shaft 8 protrudes from the opening 3 of the support 2 to the front side of the support 2 (refer to FIG. 8), and a pulley described later is coupled to the end.

The reduction gear body 6 has a built-in differential reduction mechanism with a large reduction ratio by a cycloid reduction mechanism or a trochoid reduction mechanism to reduce the rotation of the input shaft 7 and transmit it to the output shaft 8. Here, as an example, the reduction gear body 6 is a type in which the input shaft 7 and the output shaft 8 rotate in opposite directions. When viewed from the front side of the rope traction device 1, the input shaft 7 is rotated in the clockwise direction and the output shaft 8 is The direction of counterclockwise rotation is regarded as the forward direction. The reduction gear body 6 can use, for example, a rolling ball type reducer with coaxial input and output shafts, a pin type ring reducer, or the like.

The reference numeral 20 is an aluminum pulley equipped on the front side of the support 2 and is coupled to the output shaft 8 of the reduction gear 5. As shown in Figures 6 and 7, the pulley 20 is tied to the opposite inner surfaces 22, 23 in the H-shaped groove 21 where the rope (here, the fiber rope) is wound, and there are many radially arranged oppositely arranged Two dentate protrusions 24, 24,... and 25, 25.... The toothed protrusions 24..., 25... are mountain-shaped in cross section, and the height gradually decreases from the inner diameter to the outer diameter (in addition, the height may be the same from the inner diameter to the outer diameter. Furthermore, the H-shaped groove may be replaced by a V-shaped groove ).

The element symbol 30 is an aluminum rope guide installed on the upper side of the pulley 20 in the front side of the support 2, wherein the element symbol 31 is arranged above the pulley 20 at intervals and is wound in less than one circle The rope entrance and exit parts of the rope entrance and exit of the pulley 20 include an entrance part 32 and an exit part 33 which are arranged symmetrically in the left and right directions at intervals. The inlet portion 32 and the outlet portion 33 are provided so as to stand up in an inverted L shape from the support 2, and a semi-cylindrical inlet passage portion 34 and an outlet passage portion 35 are formed inside. The inlet part 32 and the outlet part 33 are formed thinner near the pulley 20, and become fitted parts 36 and 37 which can fit the upper end part of a pulley cover mentioned later. In these fitted portions 36 and 37, engagement grooves 38 and 39 are engraved on the front side (upper side of FIG. 6) of the inlet passage portion 34 and the outlet passage portion 35 and near the end of the pulley 20. The engagement groove 38 , 39 detachably engages with the engaging claws of the lock member described later equipped on the pulley cover.

Reference numeral 40 is a separation part provided between the rope entrance and exit part 31 and the pulley 20 in the rope guide 30, and separates the entrance side and the exit side of the rope wound around the pulley 20. The separating portion 40 is formed in an L shape when viewed from the side, the left and right end surfaces of the upper half are inclined surfaces 41 and 42, and the mouth 43 of the lower half is loosely inserted into the H-shaped groove 21 of the pulley 20. When the rope is loaded into the rope traction device 1, the entrance side of the rope is inserted into the entrance passage part 34 from the gap 44 between the entrance part 32 and the exit part 33, and it cannot be wound on the pulley 20 through the left side of the separation part 40 In one turn, the outlet side of the rope passes through the right side of the separation part 40, and is inserted into the outlet passage part 35 from the gap 44 between the inlet part 32 and the outlet part 33 (refer to FIG. 16).

The reference symbol 50 is a plastic cover-type pulley cover that can open and close the front and side surfaces of the pulley 20, and the lower end is rotatably bearing the hinge portion 51 on the front side of the support 2. The hinge portion 51 is It is installed in the pulley 20 directly below in FIG. 2 so that it may protrude forward. The upper end portion of the pulley cover 50 is a fitting portion 52 having a U-shaped cross-section extending upward in FIG. 2, and is detachably fitted to the outside of the fitted portions 36 and 37 of the rope inlet and outlet portion 31.

The component symbol 53 is a plastic locking member which is slidably installed in the vertical direction of FIG. 2 (see the arrow A direction and the arrow B direction of (1) in FIG. 9) and within a certain range On the back side of the fitting portion 52 of the pulley cover 50, a pair of left and right compression springs 54 and 55 are urged upward (toward the locking direction of the engagement grooves 38, 39). It is interposed between a spring seat (not shown) provided on the back side of the pulley cover 50 and the lock member 53. An elongated hole 56 is engraved near the upper end of the pulley cover 50, an operating portion 57 protruding forward from the lock member 53 is loosely fitted into the elongated hole 56, and the front end portion protrudes to the outside of the outer surface of the pulley cover 50. The upper end of the lock member 53 in (2) of FIG. 9 is formed with a locking claw 58 having a triangular cross section. When the locking member 53 is moved downward in FIG. 2 against the spring force of the compression springs 54 and 55, the locking pawl 58 is retracted from the lower end of the fitted portions 36 and 37 to the bottom of FIG. 2 and the pulley cover 50 can be moved. It opens and closes in the direction of rotation of arrows C and D in FIG. 3. While pressing the locking member 53 downward in FIG. 2, while closing the pulley cover 50, the fitting portion 52 is fitted into the fitted portions 36 and 37. When the locking member 53 is released, the compression springs 54 and 55 are applied. It moves upward in FIG. 2 by force, and the locking pawl 58 is engaged with the engaging grooves 38 and 39 and locked in the closed state.

As shown in Figures 10 and 11, the restriction device 10 is composed of a ratchet mechanism 60 and a release device 61 that releases the restriction of the ratchet mechanism 60; the ratchet mechanism 60 is combined with the input shaft 7 of the reduction gear body 6, allowing Rotation of the rope in the direction drawn from the inlet portion 32 to the pulley 20 (refer to arrow E in FIG. 16), and restrain the rotation in the opposite direction (refer to arrow F in FIG. 16) to restrict the rope from being pulled out from the inlet portion 32 to the outside . The ratchet mechanism 60 includes: a large-diameter ratchet gear 62 embedded in the input shaft 7 on the back side of the housing 9; a pawl 64 embedded in a rotating shaft 63 rotatably bearing on the back of the housing 9 And the front end rotates in the direction of advancing and retreating with respect to the ratchet gear 62, allowing only one direction of rotation of the ratchet gear 62 (the direction of the input shaft 7, the output shaft 8, and the pulley 20 in the forward direction. In Figure 10, the input shaft 7 direction The counterclockwise rotation direction) rotates and restricts the rotation in the opposite direction; and the compression coil spring 66 is sandwiched between the front end of the pawl 64 and the spring seat 65 installed on the back of the housing 9, so that the ratchet The tip portion of the pawl 64 urges the ratchet gear 62 (in addition, the compression coil spring may be replaced with a leaf spring).

On the other hand, the releasing device 61 includes (refer to FIG. 5): a pressed portion 67 formed at the rear end of the pawl 64; a plastic and substantially drop-shaped pressing member 69 embedded in the back of the housing 9 The rotating shaft 68, which is rotatably bearing in the vicinity of the pressed portion 67 of the pawl 64; and the operating handle 71 made of plastic, is installed in the outer cover 11 and extends outward through the insertion hole 70 The front end of the rotating shaft 68 is provided, and the rotation restriction is released. The pressing member 69 has: a pressing portion 72 formed to protrude from the vicinity of the rotating shaft 68 in a mouth shape, and the pressing member 69 rotates to approach the pressed portion 67 and press the pressed portion 67, or away from the pressed portion 67 Part 67 to release the pressing; an elastically deformable partial ring part 73 formed in the pressing member 69 on the opposite side of the pressing part 72 when viewed from the rotating shaft 68; and the engaging protrusion 74 from the partial ring part 73 The midway of the outer circumference of the slab protrudes in a mountain shape to the outside in the radial direction. Two engagement recesses 75, 76 are formed on the back surface of the housing 9. The two engagement recesses 75, 76 rotate on the engagement protrusion 74 with the rotating shaft 68 as the center and reach the first position P1, In the two positions of the second position P2, the engaging protrusion 74 is engaged. When the engaging protrusion 74 abuts against the edges 77, 78 of the engaging recesses 75, 76 by rotating, the part of the annular portion 73 elastically deforms in an elliptical shape; when passing through the edges 77, 78, it engages with When the recesses 75 and 76 are engaged, they return to their original shapes.

When it is desired to restrict the rotation direction by the ratchet mechanism 60, when the operating handle 71 is rotated to the first position P1, the pressing portion 72 is separated from the pressed portion 67 and the engaging protrusion 74 is engaged with the engaging recess 75, Even if the hand leaves the operating handle 71, the operating handle 71 and the pressing member 69 are fixed at the first position P1. The pawl 64 is urged by the compression coil spring 66 to engage the ratchet gear 62 at its front end, allowing only the rotation of the input shaft 7 in the forward rotation direction (see FIG. 11). Conversely, in a situation where it is desired to release the restriction on the rotation direction of the ratchet mechanism 60, when the operating handle 71 is rotated to the second position P2, the pressing portion 72 presses the pressed portion 67 and the engaging protrusion 74 is engaged with the engagement In the recess 76, even if the hand leaves the operating handle 71, the operating handle 71 and the pressing member 69 are fixed at the second position P2. The front end of the pawl 64 is retracted from the ratchet gear 62, the rotation restriction of the input shaft 7 is released, and both forward and reverse rotation are allowed (see arrows G and H in FIG. 12).

Component symbols 80 and 81 are the aluminum clamping parts provided on the front and back of the upper right side of the support 2 in FIG. 2 and are composed of rope winding rods 82 and 83 and diamond-shaped stoppers 84 and 85, and rope winding rod 82 , 83 is vertically planted on the front and back of the support 2, diamond-shaped stoppers 84, 85 are installed on the front ends of the rope winding rods 82, 83 to prevent the rope from falling off from the rope winding rods 82, 83. In this embodiment, the supporting body 2, the closed casing 9, the outer cover 11, the pulley 20, the rope guide 30, and the clamping parts 80 and 81 are made of aluminum, but they may also be made of other metals such as stainless steel.

The reference numeral 15 in FIG. 13 is used as a rechargeable electric drive of a rotary electric tool for electrically rotating and driving the rope pulling device 1. A cylindrical handle 18 having a key groove 17 is attached to the clamp 16. Reference numeral 90 in FIG. 14 is a manual rotary tool for manually rotating and driving the rope traction device 1. It is composed of a rotary shaft portion 92 and an L-shaped handle portion 93. The rotary shaft portion 92 is a shaft to the input shaft 7 The hole 13 is detachably inserted and provided with a protrusion 91 fitted in the key groove 14, and an L-shaped handle 93 is attached to the rotating shaft 92.

Next, the method of using the above-mentioned embodiment will be described. For example, as shown in FIG. 15, in a situation where a basket 100 for unloading from the roof is to be hoisted to the roof of a building 101, the worker on the roof side installs the hanging hanger 103 on the retaining wall 102. The two rope fixtures 105 and 106 are installed on the retaining wall 104 on the opposite side to the retaining wall 102. In addition, prepare the rope pulling device 1 with the pulley cover 50 closed and the operating handle 71 fixed at the first position P1, the hanging rope (here, the fiber rope) 110, and the locking member 53 of the rope pulling device 1 is directed downward in FIG. 2 ( (1) in the direction of arrow B in FIG. 9, press down, the engaging pawl 58 is away from the engaging grooves 38 and 39 to release the lock, and the pulley cover 50 is opened in the direction of arrow C in FIG. 3.

One end of the hanging rope 110 is inserted from the gap 44 between the inlet portion 32 and the outlet portion 33 of the rope pulling device 1 to the inlet passage portion 34, and passes through the left side of the separation portion 40 and is wound on the pulley 20 less than once , And inserted into the outlet passage portion 35 from the gap 44 between the inlet portion 32 and the outlet portion 33 through the right side of the separation portion 40 (refer to FIG. 16), and are wound around and caught by the catching portions 80, 81. Then, while the locking member 53 is pressed downward in FIG. 2 (in the direction of arrow B in (1) of FIG. 9), the pulley cover 50 is closed (refer to arrow D in FIG. 3) to fit the fitting portion 52 into The fitted parts 36, 37. When the downward pressure of the locking member 53 is released, the locking member 53 is urged upward in FIG. 2 (in the direction of arrow A in (1) in FIG. 9) by the compression springs 54, 55, and the engaging pawl 58 is engaged with the card Lock in the grooves 38 and 39.

Two ropes (either fiber rope or wire rope) 111 and 112 are tensioned between the rope installation hole 4 of the rope traction device 1 and the rope fixtures 105 and 106 to ensure fulcrum points . The installation of the ropes 111 and 112 to the rope installation hole 4 is performed by, for example, hooking a hook at the end of the rope to a carabiner installed in the rope installation part 4. Then, the other end of the hanging rope 110 is wound around the relay pulley 113 and the front pulley 114 of the hanging hanger 102 and hung down to the ground. The worker on the ground side hangs the basket 100 on the lower end of the hanging rope 110. If even if ground force is applied to the hanging rope 110 and the pulley 20 tries to rotate in the reverse direction, the front end of the pawl 64 of the ratchet mechanism 60 of the rope traction device 1 is also engaged with the ratchet gear 62 to restrict the input shaft 7 Since the pulley 20 does not rotate, the entrance side of the hanging rope 110 is prevented from being pulled out to the outside.

At the roof, the outlet side rope 110a of the hanging rope 110 loaded on the rope pulling device 1 is removed from the catching parts 80 and 81, and the operating handle 71 is kept fixed at the first position P1. As shown in (1) in Figure 13, a cylindrical shank 18 with a keyway 17 is attached to the jig 16 of the rechargeable electric drive 15, while the key 19 is fitted into the keyway 14 of the input shaft 7 of the rope traction device 1. , 17, while inserting the handle 18 into the shaft hole 13 and connecting it, the rechargeable electric drive 15 is driven in the forward rotation direction.

In the rope traction device 1, since the ratchet mechanism 60 allows the forward rotation of the input shaft 7, the input shaft 7 rotates forward, and it is decelerated by the reduction gear body 6 and transmitted to the output shaft 8. The pulley 20 coupled with the output shaft 8 is shown in FIG. Rotate counterclockwise. As a result, the entrance side of the hanging rope 110 is drawn into the upper left part of the pulley 20 through the entrance passage part 34 and the left side of the separation part 40, is wound less than one turn and passes from the upper right part of the pulley 20 through the right side of the separation part 40 and The exit passage part 35 comes to the outside. As a result, the cargo basket 100 rises from the ground.

After reaching the roof, the driving of the rope traction device 1 by the rechargeable electric drive 15 is stopped. Then, the entrance side rope 110b of the hanging rope 110 is pulled toward the retaining wall 102 due to the load of the basket 100, but the ratchet mechanism 60 restricts the reversal of the input shaft 7 to restrain the reversal of the pulley 20, thereby preventing The hanging rope 110 is pulled out toward the outside from the entrance side of the rope pulling device 1. Therefore, the basket 100 is in a state stopped on the outside of the protective wall 102.

In the case where unshown goods are stacked on the basket 100 and want to descend to the ground, first, the outlet side rope 110a of the hanging rope 110 is wound around the catching parts 80, 81 and fixed so as not to pull Go back to the pulley side. Next, in order to release the rotation restriction of the ratchet mechanism 60 of the rope traction device 1, the operating handle 71 is rotated to the second position P2, and the engaging protrusion 74 is engaged with the engaging recess 76 and fixed, but it is strongly protected by the The entrance-side rope 110b pulled in the direction of the wall 102 urges the pulley 20 clockwise, so the ratchet gear 62 strongly presses the front end of the pawl 64, so that the pawl 64 becomes difficult to rotate.

Therefore, as shown in (1) of FIG. 14, while fitting the protrusion 91 of the manual rotary tool 90 to the key groove 14 of the input shaft 7, the rotary shaft portion 92 is inserted into the shaft hole 13. Then, while turning the handle 93 in the counterclockwise direction (forward direction) of (1) in Figure 14 to relax the pressing of the ratchet gear 62 on the pawl 64, the operating handle 71 is turned to the second position P2 to make The engaging protrusion 74 is engaged with the engaging recess 76 and fixed. As a result, the pawl 64 moves away from the ratchet gear 62, and the rotation restriction of the input shaft 7 is released.

In this state, after grabbing the outlet-side rope 110a by hand and removing it from the catching parts 80, 81 of the rope traction device 1, if the gripping force of the outlet-side rope 110a is weakened, the pulley 20 utilizes the pull of the inlet-side rope 110b. The pulling force rotates in the clockwise direction of FIG. 16 and the outlet side rope 110a is pulled back to the inlet side. At this time, since the differential reduction mechanism of the reduction gear main body 6 becomes a large load, the hanging rope 110 is slowly pulled out from the entrance portion 32 toward the outside.

As a result, the cargo basket 100 slowly descends. If the outlet-side rope 110a of the hanging rope 110 is crimped to the catching portions 80 and 81, friction braking can be applied to lower the rope more slowly. When it is desired to interrupt the descent, it is sufficient to wind the outlet side rope 110a around the catching portions 80 and 81; when it is desired to stop the basket 100 safely, it is sufficient to move the operating handle 71 to the first position P1.

Unlike the above situation, as shown in Fig. 17, when the worker A uses rope entry technology to repair the outer wall of the building 101, he wants to equip the lower side of the worker A with aluminum and upper surface In the case of an open box-type hanging type maintenance device 120, the upper ends of the hanging ropes (here, the fiber ropes) of the two hanging slings 130 and 131 that have been installed on the retaining wall 102 of the building 101 ) 132, 133 hang down on the ground, and the hanging ropes 132, 133 are loaded on two rope traction devices 1-1, 1-2 near the ground, through two ropes (which can be either fiber rope or cable rope ) 134, 135 Hang the left side of the hanging maintenance device 120 on the rope installation hole 4 of a rope traction device 1-1, and hang the right side of the hanging maintenance device 120 on the other through two ropes 136, 137 A rope installation hole 4 of the rope traction device 1-2.

Install the rope fixtures 138, 139 on the protective wall 104 of the roof of the building 101, fix one end of the safety ropes 140, 141 on the main side of the worker A and the support side, and pass the other end over the protective wall 102 while hanging near the ground. Hook the lanyard on the main side of the safety belt worn by the operator A to the lifting device (not shown) installed on the safety rope 140, and hook the lanyard on the supporting side to the safety rope. The fall prevention device (not shown) of 141 is suspended from the safety rope 140 along the outer surface of the building 101 over the retaining wall 102, and descends to directly above the hanging maintenance device 120.

The worker A performs the construction on the hanging type maintenance device 120 with no weight or almost no weight applied to the hanging type maintenance device 120, and the safety rope 140 and the safety rope 141 are hung in the hanging type maintenance device 120 on the lower side. Inspection and repair of the outer surface of 101. Fragments such as repair members and walls generated during the work fall into the hanging type maintenance device 120 and are prevented from being scattered outside.

In a situation where he wants to move to a working area one level higher than the current work in the building 101, the worker A moves the lifting equipment and the fall prevention equipment installed on the safety ropes 140 and 141 slightly upward and climbs . Then, the input shaft 7 of the rope pulling device 1-1 with the operating handle 71 at the first position P1 is rotated and driven in the forward direction by the electric driver 150 carried, so that the left side of the hanging type maintenance device 120 is suspended along The rope 132 rises slightly; similarly, the input shaft 7 of the rope traction device 1-2 with the operating handle 71 at the first position P1 is rotated and driven in the forward direction by the electric drive 150 carried, so that the hanging maintenance device 120 The right side of is slightly raised along the hanging rope 133 to move to a higher working range.

Before and after the movement or during the movement, the weight of the operator A is not applied at all or hardly applied to the hanging type maintenance device 120. When the ascent height is insufficient, the ascent of the operator A and the ascent of the hanging type maintenance device 120 are repeated several times. Then, work such as repair is performed on the outer surface of the building 101 slightly higher than the previous work. Hereinafter, in the same way, the work of repairing the outer surface of the building 101, the ascent of the worker A and the lifting of the hanging type maintenance device 120 are repeated, and the repair of the outer surface of the building 101 is performed from the ground side to the roof. Wait for homework.

If you want to change the working position to slightly below the building 101 in the middle, the operator A moves the lifting equipment and the fall prevention equipment installed on the safety ropes 140 and 141 slightly downward to descend to the desired level. The height position. Then, the outlet side rope 132a of the rope traction device 1-1 is wound and caught in the catching parts 80 and 81, and the manual rotation tool 90 is used to rotate the input shaft 7 of the rope traction device 1-1 forward while operating The handle 71 changes to the second position P2. Then, after grabbing the outlet-side rope 132a by hand and removing it from the catching parts 80, 81, if the gripping force of the outlet-side rope 132a is weakened, the pulley 20 uses the pulling force of the inlet-side rope 132b to move as shown in Fig. 16 It rotates in the clockwise direction, and the outlet side rope 132a is pulled back to the inlet side, and the left side of the hanging type maintenance device 120 descends. When descending to a desired height, the outlet-side rope 132a is caught by the catching portions 80 and 81, and the operating handle 71 is changed to the first position P1. The same operation is also performed on the rope traction device 1-2 to lower the right side of the hanging type maintenance device 120 to a desired height. When the descending height is insufficient, the descending of the operator A and the descending of the hanging type maintenance device 120 may be repeated several times.

In addition, if the hanging type maintenance device 120 is raised to the vicinity of the roof first, it is also possible to repeat the work such as repairing the outer surface of the building 101, the lowering of the worker A and the lowering of the hanging type maintenance device 120. Repairing the outer surface of the building 101, etc., is performed from the roof side. In addition, when two workers perform repair work on the outer surface of the building, the rope pulling devices 1-1 and 1-2 can also be operated separately.

According to this embodiment, since the rotary power tool can be used as a drive source to pull the hanging ropes 110 (132, 133), there is no need to install a drive source in the device, and the device is wound around the pulley 20 for traction. A take-up drum is required, so that the entire device is compact. Furthermore, as a rotary electric tool, it is possible to use a portable general tool such as the electric drive 15 for work, so there is no need to spend time for preparing a special drive source. If the rotary power tool is a rechargeable type, there will be no trouble of winding the power cord, and it can also be used in places where it is difficult to obtain commercial power such as the roof of a building or the outside of a building. Furthermore, by using a small-sized differential reduction gear main body 6 with a large reduction ratio, the hanging rope 110 (132, 133) is removed from the entrance while the pulley 20 is reversed when the restriction device 60 is released. When the portion 32 is pulled out to the outside, a slow motion can be performed. In addition, since the inlet portion 32 and the outlet portion 33 opposed to each other at an interval constitute the rope inlet and outlet portion 31, the rope 110 (132, 133) can be suspended through the gap 44 between the inlet portion 32 and the outlet portion 33. Since the hanging rope 110 enters and exits between the exterior and the entrance portion 32 and the hanging rope 110 enters and exits between the exterior and the exit portion 33, the loading and unloading of the pulley 20 by the hanging ropes 110 (132, 133) becomes easy. Furthermore, because the rope entrance and exit portion 31 is provided at a distance from the pulley 20, and between the rope entrance and exit portion 31 and the pulley 20, the entrance side rope 110b (132b, 133b) is separated from the exit side rope 110a (132a, 133a). The separation part 40 can prevent the outlet side rope 110a (132a, 133a) from being entangled in the inlet side of the pulley 20 when the pulley 20 is rotating forward, and the inlet side rope 110b (132b, 133b) being entangled in the pulley 20 when the pulley 20 is reversed. The exit side. Furthermore, since the support 2 is provided with the catching parts 80, 81 for the hanging ropes 110 (132, 133) to be wound and caught, the tension is applied to the entrance side of the hanging ropes 110 (132, 133). The restriction of the restriction device 10 is released, but when it is desired to move the hanging rope 110 (132, 133) from the entrance portion 32 to the outside, the exit side rope 110a (132a, 133a) is wound and caught in the catch portion 80 in advance , 81, it is possible to prevent the suspension rope 110 (132, 133) from suddenly moving in the opposite direction when the restriction device 10 is released. Furthermore, by moving while slidingly contacting the catching parts 80 and 81, friction braking can also be exerted. Moreover, when it is desired to release the restriction of the restriction device 10 on the movement of the rope from the entrance portion 32 to the outside, while using the manual rotating tool 90 to manually rotate the input shaft 7 of the reduction gear body 6 and the pulley 20 slowly While turning, the release operation is performed by the operating handle 71, thereby enabling easy release.

In addition, in the above-mentioned embodiments, a rechargeable electric drive as an electric tool is taken as an example, but the present invention is not limited to this example at all, and other rotary electric tools such as electric drills may also be used. Moreover, non-rechargeable electric tools can also be used. Moreover, in the above-mentioned embodiment, although a gap is left between the entrance part and the exit part after the hanging rope is loaded, it is also possible to insert the pulley cover 50A as shown in the rope pulling device 1A in Figures 18 and 19 The joint portion extends upward and can be fitted to the upper ends of the inlet portion 32A and the outlet portion 33A. On the back side of the upper extension portion of the pulley cover 50A, a hindering portion 140 is provided to block the inlet portion 32A and the outlet. The gap 44A between the portions 33A prevents the entrance side rope inserted into the inlet passage portion 34 of the inlet portion 32A from deviating to the gap 44A and prevents the exit side rope inserted into the outlet passage portion 35 of the outlet portion 33A from deviating to the gap 44A. The obstructing portion 140 prevents the hanging rope from deviating from the gap 44A between the inlet portion 32A and the outlet portion 33A and colliding with the back of the upper end of the pulley cover 50A during use of the rope traction device, causing the pulley cover to accidentally open. Furthermore, in the above embodiment, although the pawl is urged in the direction of the ratchet gear by the compression coil spring, it may be urged by a leaf spring, a torsion spring, or the like. Moreover, in the above-mentioned embodiment, although the case where a restraining device is provided on the input shaft side of the differential reduction gear main body to restrain the loaded rope from being pulled back from the inlet side has been described as an example, it may be provided on the output shaft side. . In addition, the hanging rope with the fulcrum at the upper end side is suspended down, the lower end of the hanging rope is loaded on the rope pulling device, and the rope is used to connect the D ring of the harness worn by the operator and the rope of the rope pulling device The mounting hole can thereby be driven and raised by a portable electric drive or the like.

Then, the restricting device may be configured to replace the ratchet mechanism and include: a cam (comb) configured to bite into the rope to restrict movement when the rope is going to be pulled out from the entrance to the outside, and when it is going to the opposite direction When moving, move away from the rope to allow movement; apply a force device to force the cam in the direction of the rope; and release the device to move the cam away from the rope to release the restriction.

One specific example of the cam type restricting device is shown in FIG. 20. In the rope pulling device 1B of FIG. 20, the upper part of the support body 2B is extended upward, and the cam type restricting device 200 is installed on the front side. In the restricting device 200, the symbol 201 is a support plate mounted on the front side of the upper end of the support 2B, and the left side is U-shaped and formed on the inner side with a rope insertion portion 202 as a rope contact portion The right side of the bending portion 203 is a bending portion 205 that is bent in a U-shape and is rotatably equipped with a rotating shaft 204. The rope insertion portion 202 is provided along the path on the entrance side of the rope mounted on the rope pulling device 1B, and is arranged linearly with respect to the entrance passage portion 34 of the entrance portion 32. The base end of the cam 208 is fitted into the rotating shaft 204, and the cam 208 is formed by protruding many teeth 207 on the outer peripheral portion 206. The cam 208 has the rotating shaft 204 as the center of rotation and can rotate in the approaching direction (refer to the arrow I in FIG. 20) and the away direction (refer to the arrow J in FIG. 20) relative to the rope inserted into the rope insertion portion 202. move. A flat coil spring (not shown) that urges the cam 208 in the clockwise direction in FIG. 20 is interposed between the rotating shaft 204 and the cam 208.

A rotating shaft 209 is rotatably mounted near the center of the cam 208, and the base end of the L-shaped release operation member 210 is fitted into the rotating shaft 209. A cylindrical operation protrusion 211 protruding forward of the support 2B is installed at the corner of the release operation member 210. By operating the operation protrusion 211 with a finger, the release operation member 210 can be rotated freely around the rotation shaft 209 ( Refer to arrows K and L in FIG. 20). The front end side of the release operation member 210 is an engagement portion 212, which is bent in a J-shape and is detachably engaged with the outside of the bending portion 205 of the support plate 201. A flat coil spring (not shown) that urges the release operating member 210 in the counterclockwise direction in FIG. 20 is interposed between the rotating shaft 209 and the release operating member 210.

The method of loading the rope to the rope traction device 1B of FIG. 20 will be described. First, the operation protrusion 211 of the restriction device 200 is operated with fingers, and the rotation of the cam 208 and the rotation of the release operation member 210 are performed in parallel, as shown in FIG. 21 It shows that the engaging portion 212 is engaged with the outside of the bending portion 205. The pulley cover 50 is opened, and one end of the hanging rope 110 is inserted into the rope insertion portion 202 of the restriction device 200, and then inserted into the inlet passage portion 34 from the gap 44 between the inlet portion 32 and the outlet portion 33, and passes through the separation portion 40 The left side is wound on the pulley 20 less than one turn, the right side of the separation part 40 is inserted from the gap 44 between the inlet part 32 and the outlet part 33 to the outlet passage part 35 (refer to FIG. 21), and then it is wound and caught in the jam部80,81.

Then, the pulley cover 50 is closed, and the operating protrusion 211 of the release operating member 210 is operated with a finger to release the engagement of the engaging portion 212, and the rotation of the cam 208 and the release of the operating member 210 are performed in parallel to make the cam 208 Approach the hanging rope 110 and remove your fingers. The cam 208 is urged by a flat coil spring in the rope direction through which the outer peripheral portion 206 is inserted to the rope insertion portion 202 to be crimped to the hanging rope 110. When the hanging rope 110 is pulled downward (refer to the arrow R in FIG. 22) at the exit side of the rope insertion portion 202, a counterclockwise external force is applied to the cam 208, but the outer peripheral portion 206 is far from the hanging rope In the direction of 110, the cam 208 easily rotates counterclockwise, allowing the entry side rope 110b to move in the direction of the pulley. Conversely, when the hanging rope 110 is pulled upward (see arrow S in FIG. 22) at the entrance side of the rope insertion portion 202, a clockwise external force is applied to the cam 208, but the outer peripheral portion 206 is close to the vertical In the direction of the hanging rope 110, the cam 208 bites into the hanging rope 110 to restrict movement (the hanging rope 110 is clamped by the rope insertion portion 202 and the cam 208).

When the traction of the hanging rope 110 is started, the outlet side rope 110a is removed from the catching parts 80 and 81, and when the input shaft 7 is rotated forward by the rechargeable electric drive 15, the pulley 20 rotates forward. The restricting device 200 is in a direction that allows movement, so the hanging rope 110 is pulled smoothly. When it is desired to stop the traction of the hanging rope 110, the driving of the input shaft 7 by the rechargeable electric drive 15 is stopped. When the hanging rope 110 is pulled upward at the entrance side of the rope insertion portion 202, a clockwise external force is applied to the cam 208, but since the outer peripheral portion 206 is in a direction approaching the hanging rope 110, the cam 208 Bites into the hanging rope 110 to restrict movement. Therefore, the entrance side rope 110b will not be pulled back. When the entrance side rope 110b is pulled upward in FIG. 22 and you want to pull it back in the pulled direction, the exit side rope 110a is wound and caught in the catching parts 80, 81 to make the manual type The rotating tool 90 is coupled to the input shaft 7 and rotates forward, loosens the cam 208’s biting into the hanging rope 110, operates the operating protrusion 211 of the restricting device 200 with fingers, and rotates the cam 208 and the release operating member 210 in parallel. Then, as shown in FIG. 21, the engaging portion 212 is engaged with the outside of the bending portion 205. Then, when the gripping force of the outlet side rope 110a removed from the catching parts 80, 81 is weakened, the pulley 20 is reversed by the pulling force of the inlet side rope 110b, and the outlet side rope 110a is pulled back to the entrance side.

According to the modification of FIG. 20, it is possible to restrict the entrance side rope 110b from being pulled back during traction or stopping of the hanging rope 110 without using a ratchet mechanism, and it is possible to return the hanging rope 110 to the original position. Lift restrictions. Furthermore, the rope insertion portion 202 of the restricting device 200 is arranged in the support 2B on the entrance side of the entrance portion 32, so the rope passage at the entrance side becomes longer, and the suspension rope 110 can be more smoothly transferred to the pulley 20. The guide.

Another specific example of the cam type restricting device is shown in FIGS. 23 and 24. In the rope pulling device 1C of Figs. 23 and 24, on the upper right side of the front side of the support body 2C, a cam type restricting device 300 is installed between the outlet portion 33, the pulley 20 and the clamping portion 80. In the restricting device 300, the symbol 301 is a support plate mounted on the upper right part of the front side of the support 2C, and the right part is a bent portion 305 with a rotating shaft 304 that is bent in a U shape and is rotatably mounted on the inside. . The base end of a cam 308 formed by protruding a plurality of teeth 307 on the outer peripheral portion 306 is fitted into the rotating shaft 304. The cam 308 can rotate in the approaching direction and the away direction with respect to the rope passing through the rope groove of the rope contact part described later with the rotating shaft 304 as the center of rotation (see arrows M and N in FIG. 24 ). A flat coil spring (not shown) that urges the cam 308 in the counterclockwise direction of FIGS. 23 and 24 is interposed between the rotating shaft 304 and the cam 308.

A rotary shaft 309 is rotatably mounted near the center of the cam 308, and the base end of the L-shaped release operation member 310 is fitted into the rotary shaft 309. A cylindrical operation protrusion 311 protruding forward of the support 2C is installed at the corner of the release operation member 310. By operating the operation protrusion 311 with a finger, the release operation member 310 can be rotated freely around the rotating shaft 309 (Refer to arrows O and Q in Fig. 24). The front end side of the release operation member 310 is the engaging portion 312, which is bent in a J-shape and is detachably engaged with the outside of the bent portion 305 of the support plate 301. A flat coil spring (not shown) that urges the release operating member 310 in the clockwise direction in FIGS. 23 and 24 is interposed between the rotating shaft 309 and the release operating member 310.

The separating part 40C is a rope abutting part 45 that is loosely inserted into the H-shaped groove 21 of the pulley 20 on the right side of FIGS. 23 and 24 and extends obliquely downward. A rope groove 46 having an arc-shaped cross section is formed on the side surface. The pulley cover 50C is formed with an opening 400 on the side surface of the upper right part of FIG. 23, so that even if the cam 308 and the release operating member 310 rotate, they will not interfere with the pulley cover 50C.

The method of loading the rope to the rope pulling device 1C configured as shown in FIGS. 23 and 24 will be described. First, the operation protrusion 311 of the restriction device 300 is operated with fingers, and the rotation of the cam 308 and the release of the operation member 310 are performed in parallel. Rotate, and engage the engaging portion 312 on the outside of the bending portion 305 as shown in FIG. 25. Open the pulley cover 50C, insert one end of the hanging rope 110 from the gap 44 between the inlet portion 32 and the outlet portion 33 into the inlet passage portion 34, and wind the pulley 20 less than once through the left side of the separation portion 40C, and insert In the rope groove 46 of the rope guide part 45 of the separation part 40C, it is inserted into the exit passage part 35 from the gap 44 between the entrance part 32 and the exit part 33 (refer to FIG. 25), and is wound and caught in the catch part 80, 81.

Then, the pulley cover 50C is closed, and the operating protrusion 311 of the operating member 310 is released with a finger to release the engagement of the engaging portion 312, and the rotation of the cam 308 and the release of the operating member 310 are performed in parallel to make the cam 308 Approach the hanging rope 110 and remove your fingers. The cam 308 rotates and biases the outer peripheral portion 306 in the rope direction by a flat coil spring, thereby pressing the hanging rope 110 to the rope contact portion 45 (see FIG. 26). When a force is applied to the hanging rope 110 from the vicinity of the rope exit of the pulley 20 (near the entrance of the rope groove 46) toward the exit portion 33 (refer to arrow T in FIG. 26), a clockwise external force is applied to the cam 308, However, since the outer peripheral portion 306 is in a direction away from the hanging rope 110 inserted into the rope groove 46, the cam 308 easily rotates in the clockwise direction, allowing movement in the outward direction from the exit portion 33 of the exit side rope 110a. Conversely, when a force is applied to the hanging rope 110 in a direction (refer to arrow U in FIG. 26) from the entrance portion 32 to the upper side of FIG. 26, an external force in the counterclockwise direction is applied to the cam 308, but the outer peripheral portion 306 is located Approaching the direction of the hanging rope 110 embedded in the rope groove 46, the outer peripheral portion 306 of the cam 308 bites into the hanging rope 110 to restrict movement (the hanging rope 110 is clamped between the cam 308 and the rope abutting portion 45) .

When the traction of the hanging rope 110 is started, the outlet side rope 110a is removed from the catching parts 80 and 81, and when the input shaft 7 is rotated forward by the rechargeable electric drive 15, the pulley 20 rotates forward. The limiting device 300 is in a direction that allows the hanging rope 110 to move, so the hanging rope 110 is smoothly pulled. When it is desired to stop the traction of the hanging rope 110, the driving of the input shaft 7 by the rechargeable electric drive 15 is stopped. When the entrance-side rope 110b is pulled above the entrance portion 32, the exit-side rope 110a fitted into the rope groove 46 of the rope abutting portion 45 is pulled in the direction of the pulley 20 to apply a counterclockwise external force to the cam 308. However, because the outer peripheral portion 307 is in a direction approaching the hanging rope 110, the cam 308 bites into the hanging rope 110 to restrict movement. Therefore, the hanging rope 110 will not be pulled back. When the entrance side rope 110b is pulled upward in FIG. 26 and wants to return to the pulled direction, the exit side rope 110a is wound and caught in the catching parts 80 and 81, and the manual rotating tool 90 is coupled with the input shaft 7 and rotates forward, the biting of the hanging rope 110 by the cam 308 is released, the operation protrusion 311 of the restriction device 300 is operated with fingers, and the rotation of the cam 308 and the release operation member 310 are performed in parallel, The engaging portion 312 is engaged with the outside of the bending portion 305 as shown in FIG. 25. Then, when the gripping force of the outlet side rope 110a removed from the catching parts 80, 81 is weakened, the pulley 20 is reversed by the pulling force of the inlet side rope 110b, and the outlet side rope 110a is pulled back to the entrance side.

According to the modification of FIGS. 23 and 24, without using a ratchet mechanism, it is possible to restrict the suspension rope 110 from being pulled back during traction or stopping of the entrance side rope 110b, and to return the suspension rope 110 to its original position. Restrictions can be lifted under circumstances. In addition, the restriction device 300 is provided between the outlet portion 33, the pulley 20, and the catch portion 80 in the support 2C, so the device does not need to be large. Furthermore, since the hanging rope 110 is clamped by the rope contact part 45 and the cam 308, the movement of the hanging rope 110 in the pulled-back direction can be restrained reliably. In addition, the restriction device 300 can also be provided between the inlet portion 32 and the pulley 20 (in this case, the left side of the separation portion in Fig. 23 and Fig. 24 can be extended obliquely downward as a rope contact portion) . (Industrial availability)

The present invention can be applied to a rope pulling device that pulls a rope to move objects or people.

1,1-1,1-2,1A,1B,1C: rope traction device 2, 2B, 2C: Support 3: opening 4: Rope installation hole 5: Deceleration device 6: Reducer body 7: Input shaft 8: output shaft 9: hermetic shell 10,200,300: restricted device 11: Outer cover 12: opening 13: Shaft hole 14,17: keyway 15: Rechargeable electric drive 16: fixture 18: handle 19: key 20: pulley 21: H slot 22, 23: inner surface 24, 25: dentate protrusion 30: Rope guide 31: Rope entrance and exit 32, 32A: entrance 33, 33A: Export Department 34: entrance passage 35: Exit Path 36, 37: Fitted part 38, 39: snap groove 40, 40C: separation part 41, 42: Inclined surface 43: Mouth 44, 44A: Clearance 50, 50A, 50C: pulley cover 51: Hinge 52: Fitting part 53: Locking member 54,55: compression spring 56: Long hole 57: Operation Department 58: engagement claw 60: Ratchet mechanism 61: Deactivate the device 62: Ratchet gear 63, 68, 204, 209, 304, 309: rotating shaft 64: pawl 65: spring seat 66: Compression coil spring 67: pressed part 69: pressing member 70: Through hole 71: operating handle 72: pressing part 73: Part of the ring 74: snap protrusion 75, 76: engagement recess 77, 78: margin 80, 81: stuck part 82, 83: rope winding rod 84, 85: diamond-shaped stop 90: manual rotary tool 91: protrusion 92: Rotating shaft 93: Handle 101: Building 102, 104: retaining wall 103, 130, 131: hanging sling 105, 106, 138, 139: Rope fixture 110, 132, 133: hanging rope 110a, 132a, 133a: Outlet side rope 110b, 132b, 133b: Inlet side rope 111, 112, 134, 135, 136, 137: rope 113: Relay pulley 114: Front pulley 140,141: safety rope 201,301: Support board 202: Rope penetration part 203,205,305: bending part 206,306,307: Peripheral 207: tooth 208,308: Cam 210, 310: Release the operating member 211, 311: Operation protrusion 212,312: engagement part 400: opening A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, Q, R, S, T, U: Arrow P1: first position P2: second position

[Fig. 1] is a perspective view of the appearance of a rope traction device of an embodiment (Embodiment 1). [Figure 2] is a front view of the rope pulling device. [Figure 3] is a side view of the rope traction device. [Figure 4] is a top view of the rope traction device. [Figure 5] is a rear view of the rope pulling device. [Fig. 6] is a perspective view of the rope pulling device with the pulley cover and the hinge part omitted. [Figure 7] is a side view of the rope traction device with the pulley cover omitted. [Figure 8] is a perspective view of the rope traction device with the pulley cover and pulley omitted. [Figure 9] (1) is a perspective view of the locking member for locking the pulley cover, (2) in Figure 9 is a front view, (3) in Figure 9 is a top view, and (4) in Figure 9 is a side view . [Fig. 10] is a rear view of the rope pulling device with the outer cover omitted. [Fig. 11] is an enlarged view showing the structure of the restricting device, partially omitted. [Figure 12] is an explanatory diagram of the function of the limiting device. [Fig. 13] (1) is an explanatory diagram of the rechargeable electric drive for driving the rope traction device, and (2) in Fig. 13 is a cross-sectional view along the line XIII-XIII' of (1) in Fig. 13. [Fig. 14] (1) is an explanatory diagram of a manual rotary tool driving the rope traction device, and (2) in Fig. 14 is a cross-sectional view taken along the line XIV-XIV' in (1) in Fig. 14. [Fig. 15] is an explanatory diagram of how to use the rope traction device. [Figure 16] is an explanatory diagram of how to use the rope traction device. [Fig. 17] is an explanatory diagram of another method of using the rope traction device. Fig. 18 is a front view showing a modification of the rope pulling device. [Fig. 19] is a plan view of the rope pulling device of Fig. 18. [Fig. Fig. 20 is a front view showing another modification of the rope pulling device. [Fig. 21] is an explanatory diagram of the usage method of the rope pulling device of Fig. 20, and the pulley cover is omitted. [Fig. 22] is an explanatory diagram of a method of using the rope pulling device of Fig. 20. [Fig. [Fig. 23] is a front view showing a partial fracture of another modification of the rope pulling device. [Fig. 24] is a front view of the rope pulling device of Fig. 23 with the pulley cover omitted. [Fig. 25] is an explanatory diagram of the method of using the rope pulling device of Fig. 23, and the pulley cover is omitted. [Fig. 26] is an explanatory diagram of the usage method of the rope pulling device of Fig. 23, and the pulley cover is omitted.

1: Rope traction device

2: Support

5: Deceleration device

6: Reducer body

7: Input shaft

8: output shaft

20: pulley

21: H slot

22, 23: inner surface

24, 25: dentate protrusion

30: Rope guide

31: Rope entrance and exit

32: entrance

36: Fitted part

40: Separation part

41: Inclined surface

43: Mouth

51: Hinge

71: operating handle

80, 81: stuck part

Claims (2)

A method for working on the outer surface of a building, which is a method for an operator to work on the outer surface of the building while hanging from the roof of the building by a safety rope; Install the hanging rope from the hanging sling that has been installed on the protective wall of the aforementioned roof of the aforementioned building to the rope traction device; Suspend a box-shaped hanging maintenance device with an open upper surface on the aforementioned rope traction device; Equip the aforementioned hanging maintenance device on the underside of the aforementioned operator; The worker performs the work on the outer surface of the building in such a way that the body weight of the worker suspended by the safety rope is not applied or hardly applied to the hanging type maintenance device. The method of working on the outer surface of the building as described in claim 1, wherein one end of the safety rope used to hang the worker is fixed to a rope fixture, and the rope fixture has been installed on The protective wall of the roof of the building.

Images