TW202007633A - 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

Rope traction device

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

When you want to load or unload between the ground and the roof of the building, hang the suspended cargo in advance at the lower end of the hanging rope that has been hung from the hanging sling of the parapet installed 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 goods. However, the existing rope hoisting device is a large-sized device including 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 equipment 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 Laid-Open No. 6-206698.

[Problems to be solved by the invention]

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

According to an embodiment of the present invention, a rope traction device includes a differential reduction type reduction device, an input shaft detachably connected to an output shaft of a rotary power tool, and an output combined with a pulley detachably rewound for rope winding Shaft, and decelerates the rotation applied to the input shaft and transmits it to the output shaft; the support body is equipped with a deceleration device; the inlet portion and the outlet portion are provided on the support body and form the inlet and outlet of the rope wound around the pulley; and the restriction The device, which is provided on the deceleration device or the support body, restricts the entrance side of the rope from being pulled out to the outside. [Effect of invention]

According to an embodiment of the present invention, since the rotary electric tool can be used as a driving source to draw the rope, there is no need to install a driving source in the device, and because the traction is wound around the pulley, there is no need to take up the drum, so that the device Overall small. In addition, as a rotary power tool, a general portable tool for work can be used, so that there is no need to spend time preparing a special driving source. If the rotary power tool is a rechargeable type, there will be no trouble of routing the power cord, and it can also be used in places where it is difficult to obtain commercial power sources such as the roof of high-rise buildings. In addition, by using a differential reduction type reduction device with a small reduction ratio and a large reduction ratio, when the restriction device is released, the rope can be pulled out from the entrance side to the outside while reversing the pulley, and a slow motion can be performed. Furthermore, according to an embodiment of the present invention, since the inlet portion and the outlet portion are provided at a distance from the pulley, and a separation portion is provided between the inlet portion and the outlet portion 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 into the inlet side of the pulley when the pulley is rotating forward and the inlet-side rope from being entangled into 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 a gap therebetween, the rope is 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 inlet and the rope are allowed to enter and exit between the outside and the outlet, so that the rope can be easily loaded and unloaded on the pulley, and because the pulley cover is provided with an obstacle, the obstacle is locked when the lock is closed Entering the gap between the inlet and the outlet prevents the rope from falling off from the inlet or the outlet. Therefore, it is possible to prevent the rope from falling off the inlet or the outlet during use and accidentally opening the pulley cover. Furthermore, according to an embodiment of the present invention, since the support body includes a retainer for fixing the rope around the rope, when the tension is applied to the entrance side of the rope, the restriction device releases the rope from the entrance toward the outside When you want to move the rope from the entrance to the outside, the rope on the exit side is wrapped and caught in the catching part in advance, thereby preventing the rope from suddenly moving in the opposite direction when the restriction device is released. Furthermore, by moving while slidingly contacting the catching portion, the friction brake can also function. Furthermore, according to an embodiment of the present invention, when it is desired to release the restriction device from restricting the movement of the rope from the entrance to the outside, the input shaft of the deceleration device is manually rotated forward using the manual rotating tool and the pulley is slowly rotated forward The release operation can be easily performed by the operation unit while rotating.

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

1 is an external perspective view of a rope traction device according to an embodiment of the present invention, FIGS. 2 to 5 are a front view, a side view, a top view, and a rear view of the rope traction device, and FIG. 6 is a rope traction device with a pulley cover and a hinge omitted. 7 is a side view of the rope traction device omitting the pulley cover, FIG. 8 is a perspective view of the rope traction device omitting the pulley cover and the pulley, (1) in FIG. 9 is a locking member that locks 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, and FIG. 10 is a configuration diagram of a restricting device in a rope traction device, FIG. 11 It is an enlarged view of a part of the restricting device, and FIG. 12 is an explanatory diagram of the function of the restricting device.

In these figures, the element symbol 1 is a power type rope traction device, and the rope (here, fiber rope) can be towed by the driving force obtained by the charging electric drive carried by the operator. Refer to the element symbol 110 in FIGS. 15 and 16 ). In the rope pulling device 1, the element symbol 2 is an aluminum plate-shaped support, a circular opening 3 (see FIG. 8) is formed near the center, and a rope mounting hole 4 as a rope mounting portion is formed on the lower side . Component symbol 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; sealed housing 9 made of aluminum, except the input shaft 7 and the output shaft 8 to seal the reduction gear body 6; restricting device 10, equipped on the back side of the sealed housing 9 and by limiting the reverse of the input shaft 7 It turns to restrict the pull-back of the entrance side of the rope; and the aluminum and disc-shaped outer cover 11 is attached to the peripheral end portion of the back of the sealed 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 the opening 12 formed in the center of the outer cover 11.

As shown in FIG. 13, the input shaft 7 is provided with a key slot 14 in a cylindrical shaft hole 13, and a cylindrical shank 18 having a key slot 17 is mounted on a chuck that is the output shaft of the rechargeable electric drive 15 ) 16, the key 19 is fitted into the key grooves 14, 17 and the handle 18 is inserted into the shaft hole 13 to be connected, and the input shaft 7 can be rotated by driving the rechargeable 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 deceleration device body 6 incorporates a differential deceleration mechanism with a cycloid deceleration mechanism or a trochoid deceleration mechanism with a large deceleration ratio, which decelerates the rotation of the input shaft 7 and transmits it to the output shaft 8. Here, as an example, the speed reducer 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 clockwise and the output shaft 8 is along The direction of counterclockwise rotation is taken as the forward rotation direction. For the reduction gear main body 6, for example, a rolling ball reducer with a coaxial input/output shaft and a pin ring reducer can be used.

The element symbol 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 FIGS. 6 and 7, the pulley 20 is attached to the opposing inner surfaces 22 and 23 in the H-shaped groove 21 wound with a rope (here, fiber rope), and there are many radially arranged oppositely Tooth-shaped protrusions 24, 24, ... and 25, 25.... The tooth-shaped protrusions 24..., 25... have a mountain-shaped cross-section, and the height gradually decreases from the inner diameter to the outer diameter (in addition, the height can also be the same from the inner diameter to the outer diameter. Furthermore, the H-shaped groove can also 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 body 2, wherein the element symbol 31 is provided above the pulley 20 at intervals and is wound around less than one turn The rope inlet and outlet portions of the rope inlet and outlet of the pulley 20 include an inlet portion 32 and an outlet portion 33 that are symmetrically arranged to face left and right with a gap therebetween. The inlet portion 32 and the outlet portion 33 are provided so as to stand upside down from the support 2 in an inverted L shape, and a semi-cylindrical inlet passage portion 34 and an outlet passage portion 35 are formed inside. The inlet portion 32 and the outlet portion 33 are formed thinner near the pulley 20 so as to be fitted portions 36 and 37 that can be fitted into the upper end portion of a pulley cover described later. Of these fitted portions 36 and 37, engagement grooves 38 and 39 are engraved on the front side (upper side in FIG. 6) of the inlet passage portion 34 and the outlet passage portion 35 and near the end of the pulley 20, and the engagement groove 38 , 39 is detachably engaged with the engaging claws of the locking member, which will be described later, on the pulley cover.

The element symbol 40 is a separation part provided between the rope entrance-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 separation 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 portion 43 of the lower half is loosely inserted into the H-shaped groove 21 of the pulley 20. When loading the rope into the rope traction device 1, the inlet side of the rope is inserted into the inlet passage portion 34 from the gap 44 between the inlet portion 32 and the outlet portion 33, and cannot be wound on the pulley 20 through the left side of the separation portion 40 In one turn, the exit side of the rope passes through the right side of the separation part 40, and is inserted into the exit passage part 35 from the gap 44 between the entrance part 32 and the exit part 33 (see FIG. 16).

The element symbol 50 is a plastic-covered pulley cover that covers the front surface and side surfaces of the pulley 20 so as to open and close freely, and the lower end portion rotatably supports a hinge portion 51 on the front side of the support 2. The hinge portion 51 is a It is provided directly below the pulley 20 in FIG. 2 so as to protrude forward. The upper end portion of the pulley cover 50 is a fitting portion 52 that extends upward in FIG. 2 and has a U-shaped cross section, and can be detachably fitted to the outside of the fitted portions 36 and 37 of the rope entrance/exit portion 31.

The element symbol 53 is a plastic locking member which is slidably arranged in a certain range in the up and down direction of FIG. 2 (refer to the direction of arrow A and arrow B of (1) in FIG. 9) within a certain range The back side of the fitting portion 52 of the pulley cover 50 is urged upward by the pair of left and right compression springs 54 and 55 (toward the locking direction of the engagement grooves 38 and 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 operation portion 57 protruding forward from the lock member 53 is loosely fitted into the elongated hole 56, and the front end portion protrudes further outward from the outer surface of the pulley cover 50. In the upper end portion of the locking member 53 in (2) in FIG. 9, a locking claw 58 having a triangular cross section is formed. When the locking member 53 is moved downward in FIG. 2 against the spring force of the compression springs 54 and 55, the locking claw 58 is retracted from the lower end of the fitted portions 36 and 37 to the lower side in FIG. 2 and the pulley cover 50 can be removed 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, the pulley cover 50 is closed and the fitting portion 52 is fitted into the fitted portions 36 and 37. When the pressing of the locking member 53 is released, the compression springs 54 and 55 apply 2, the locking claw 58 is engaged with the engagement grooves 38 and 39 and locked in the closed state.

As shown in FIGS. 10 and 11, the restricting device 10 is composed of a ratchet mechanism 60 and a releasing device 61 that releases the restriction of the ratchet mechanism 60; the ratchet mechanism 60 is coupled with the input shaft 7 of the reduction gear body 6 to allow The rotation of the rope in the direction from the entrance 32 to the pulley 20 (refer to arrow E in FIG. 16 ), and restrains the rotation in the opposite direction (refer to arrow F in FIG. 16) to restrict the rope from being pulled out from the entrance 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 ratchet 64 embedded in a rotating shaft 63 rotatably bearing on the back of the housing 9 And the front end portion rotates in the direction of advancing and retreating relative to the ratchet gear 62, and only allows the rotation direction of the ratchet gear 62 to be in one direction (the direction in which the input shaft 7, the output shaft 8, and the pulley 20 rotate forward, and the input shaft 7 direction in FIG. 10 The direction of counterclockwise rotation) and restrict 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 to The front end portion of the claw 64 urges the ratchet gear 62 (in addition, the compression coil spring can be replaced with a plate spring).

On the other hand, the releasing device 61 includes (refer to FIG. 5 ): a pressed portion 67 formed at the rear end portion of the pawl 64; a plastic substantially pressure drop member 69 that is embedded in the back of the housing 9 A rotating shaft 68 that is rotatably supported in the vicinity of the pressed portion 67 of the pawl 64; and a plastic operating handle 71, which is installed in the insertion hole 70 passing through the outer cover 11 and extends outward The front end portion of the rotating shaft 68 is provided, and a rotation restriction releasing operation is performed. The pressing member 69 has a pressing portion 72 formed protruding from the vicinity of the rotating shaft 68 in a mouth-like shape, and by the rotation of the pressing member 69 approaching the pressed portion 67 and pressing the pressed portion 67 or away from the pressed portion Part 67 to release the pressure; an elastically deformable partial ring part 73 formed in the pressing member 69 opposite to the pressing part 72 when viewed from the rotating shaft 68; and an engaging protrusion 74 from the partial ring part 73 In the middle of the outer periphery of the outer periphery, it protrudes in a mountain shape toward the outside in the radial direction. Two engagement recesses 75, 76 are formed on the back of the housing 9, and the two engagement recesses 75, 76 are rotated around the rotation shaft 68 at the engagement protrusion 74 and come to 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 rotation, part of the ring portion 73 is elastically deformed in an oval shape; when the edges 77, 78 are engaged with When the concave portions 75 and 76 are engaged, the original shape is restored.

In the case where the rotation direction is to be restricted by the ratchet mechanism 60, when the operating lever 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 moves away from 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 and the front end portion is engaged with the ratchet gear 62, and only the input shaft 7 is allowed to rotate in the forward rotation direction (see FIG. 11 ). Conversely, in the case where it is desired to release the restriction of the rotation direction of the ratchet mechanism 60, when the operating lever 71 is rotated to the second position P2, the pressing portion 72 presses the pressed portion 67 and the engaging protrusion 74 engages with the engagement Even if the hand moves away from the operating handle 71, the concave portion 76 is fixed to the second position P2 with the operating handle 71 and the pressing member 69. The front end portion 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 rotations are allowed (refer to arrows G and H in FIG. 12).

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

The element symbol 15 in FIG. 13 is used as a rechargeable electric driver for electrically driving the rotary electric tool of the rope pulling device 1, and a cylindrical shank 18 having a key groove 17 is attached to the jig 16. The element symbol 90 in FIG. 14 is a manual rotary tool for manually rotating and driving the rope traction device 1, and is composed of a rotary shaft portion 92 and an L-shaped handle portion 93, and the rotary shaft portion 92 is a shaft to the input shaft 7 The hole 13 is freely insertable and includes a protrusion 91 fitted into the key groove 14, and an L-shaped handle 93 is attached to the rotation shaft 92.

Next, the usage method of the above embodiment will be described. For example, as shown in FIG. 15, in the case where the cargo basket 100 for unloading from the roof is to be lifted to the roof of the building 101, the operator on the roof side needs to install the hanging spreader 103 on the protective wall 102, The two rope fixtures 105 and 106 are installed on the retaining wall 104 opposite to the retaining wall 102. Then, prepare the rope traction device 1 with the pulley cover 50 closed and the operating handle 71 fixed to the first position P1, and hang the rope (here, fiber rope) 110, and move the locking member 53 of the rope traction device 1 downward in FIG. 2 ( 9 (1) in the direction of arrow B), the engaging claw 58 is moved away from the engaging grooves 38 and 39 to unlock, and the pulley cover 50 is opened in the direction of arrow C in FIG. 3.

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

Two ropes (which can be either fiber ropes or wire ropes) 111, 112 are tensioned between the rope installation hole 4 of the rope traction device 1 and the rope fixtures 105, 106 to ensure a fulcrum . The installation of the rope installation holes 4 by the ropes 111 and 112 is performed, for example, by hooking the hook at the end of the rope to a carabiner installed on the rope installation section 4. Then, the other end side of the hanging rope 110 is wound around the relay pulley 113 and the front end pulley 114 of the hanging spreader 102 and hangs down to the ground. An operator on the ground side hangs the cargo basket 100 at the lower end of the hanging rope 110. If even if a ground-direction force is applied to the hanging rope 110 and the pulley 20 attempts to rotate in the reverse direction, the front end portion of the pawl 64 of the ratchet mechanism 60 of the rope traction device 1 is 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 exit-side rope 110a of the hanging rope 110 that has been loaded on the rope traction device 1 is removed from the catching portions 80 and 81, and the operating handle 71 is kept fixed at the first position P1. As shown in (1) of FIG. 13, a cylindrical shank 18 having a key slot 17 is attached to the jig 16 of the rechargeable electric drive 15, and the key 19 is fitted into the key slot 14 of the input shaft 7 of the rope traction device 1 , 17, while inserting the shank 18 into the shaft hole 13 and connecting them, the charging electric driver 15 is driven in the forward rotation direction.

In the rope traction device 1, since the ratchet mechanism 60 allows forward rotation of the input shaft 7, the input shaft 7 rotates forward, is decelerated by the reduction gear body 6 and transmitted to the output shaft 8, and the pulley 20 combined with the output shaft 8 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 left side of the entrance passage 34 and the separation part 40, and is wound less than once and passes through the right side of the separation part 40 from the upper right part of the pulley 20 The exit passage 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 protective wall 102 due to the load of the cargo basket 100, but the ratchet mechanism 60 restricts the reverse rotation of the input shaft 7 to restrict the reverse rotation of the pulley 20, so it is prevented The hanging rope 110 is pulled outward from the entrance side of the rope pulling device 1. Therefore, the cargo basket 100 is stopped outside the protective wall 102.

In the case where the unillustrated cargo is stacked on the cargo basket 100 and you want to descend to the ground, first, the exit side rope 110a of the hanging rope 110 is wrapped around the catching portions 80 and 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 due to strong force 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 portion of the pawl 64, so the pawl 64 becomes difficult to rotate.

Therefore, as shown in (1) of FIG. 14, while fitting the protrusion 91 of the manual rotation tool 90 into the key groove 14 of the input shaft 7, the rotation shaft portion 92 is inserted into the shaft hole 13. Then, while turning the handle portion 93 in the counterclockwise direction (forward rotation direction) of (1) in FIG. 14 to loosen the ratchet gear 62 from pressing the pawl 64, the operating handle 71 is rotated to the second position P2, so that 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 grasping the exit-side rope 110a by hand and removing it from the gripping portions 80, 81 of the rope traction device 1, if the grip force of the exit-side rope 110a is weakened, the pulley 20 is pulled by the entrance-side rope 110b The pulling force rotates clockwise in FIG. 16 and the exit-side rope 110a is pulled back to the entrance side. At this time, since the differential reduction mechanism of the reduction gear main body 6 becomes a heavy load, the hanging rope 110 is slowly pulled out from the entrance portion 32 toward the outside.

By this, the cargo basket 100 slowly descends. When the exit-side rope 110a of the hanging rope 110 is crimped to the catching portions 80 and 81, friction braking can be applied to lower it more slowly. When it is desired to interrupt the descent, the outlet-side rope 110a may be wrapped around the catching portions 80, 81; when it is desired to stop the cargo basket 100 safely, the operating handle 71 may be moved to the first position P1.

Unlike the above case, as shown in FIG. 17, when the worker A uses the rope entry technique to repair the outer wall of the building 101, the aluminum and the upper surface are provided on the lower side of the worker A to be freely lifted. In the case of an open box-type hanging maintenance device 120, the upper ends are respectively fixed to the hanging ropes (here, fiber ropes) of the two hanging slings 130, 131 that have been installed on the protective wall 102 of the building 101 ) 132, 133 hang down on the ground, and hang the hanging ropes 132, 133 on the two rope traction devices 1-1, 1-2 near the ground, via two ropes (which may be either fiber ropes or cable ropes) ) 134, 135 hold the left side of the hanging type maintenance device 120 to the rope mounting hole 4 of a rope traction device 1-1, and hold the right side of the hanging type maintenance device 120 to another through two ropes 136, 137 A rope installation hole 4 of a rope traction device 1-2.

Install the rope fixtures 138, 139 to the protective wall 104 on the roof of the building 101, fix one end side of the safety ropes 140, 141 for the main side and the supporting side for the worker A, and pass the other end side over the protective wall 102 and fell 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 support side to the safety rope installed The fall prevention device (not shown) of 141 crosses the protective wall 102 and hangs on the safety rope 140 along the outer surface of the building 101 and descends directly above the hanging maintenance device 120.

The operator A carried out the construction on the building in such a way that the weight was not applied at all or hardly applied to the hanging maintenance device 120, and the lower sides of the safety rope 140 and the safety rope 141 were suspended in the hanging maintenance device 120. 101 inspection and repair of the outer surface. The repairing members generated during the operation, debris such as walls, and the like fall into the hanging maintenance device 120 and are prevented from flying outside.

In the case where it is desired to move to the work area one level higher than the current work with respect to the building 101, the worker A moves the positions of the lifting appliances and fall prevention appliances attached to the safety ropes 140, 141 slightly upward and ascends . 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 rotation direction by the electric drive 150 carried, so that the left side of the hanging maintenance device 120 is suspended along the hanging 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 rotation direction by the electric drive 150 carried to make the hanging maintenance device 120 The right side of is raised slightly along the hanging rope 133 to move to the working range one level higher.

Before or after the movement or during the movement, the weight of the operator A is not applied at all or hardly applied to the hanging maintenance device 120. When the ascent height is insufficient, the ascent of the worker A and the ascent of the hanging maintenance device 120 are repeated several times. Then, work such as repairing is performed on the slightly higher side of the outer surface of the building 101 than the previous work. Hereinafter, in the same way, the repair of the outer surface of the building 101 and the ascending of the worker A and the ascent of the hanging 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 slightly below the building 101 in the middle, the operator A moves down the desired position of the lifting device and the anti-falling device installed on the safety ropes 140 and 141, and then drops to the desired Height position. Then, the exit-side rope 132a of the rope pulling device 1-1 is wound and caught in the catching portions 80, 81, and using the manual rotation tool 90, the input shaft 7 of the rope pulling device 1-1 is rotated forward while being operated. The handle 71 changes to the second position P2. Then, after grasping the exit-side rope 132a by hand and removing it from the catching portions 80, 81, if the holding force of the exit-side rope 132a is weakened, the pulley 20 uses the pulling force of the entrance-side rope 132b toward The clockwise direction rotates, and the exit side rope 132a is pulled back to the entrance side and the left side of the hanging maintenance device 120 descends. When descending to a desired height, the exit-side rope 132a is caught by the catching portions 80 and 81, and the operation lever 71 is changed to the first position P1. Perform the same operation on the rope pulling device 1-2 to lower the right side of the hanging maintenance device 120 to the desired height. When the descending height is insufficient, the descending of the worker A and the descending of the hanging maintenance device 120 may be repeated several times.

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

According to this embodiment, the rotary power tool can be used as the driving source to pull the hanging ropes 110 (132, 133), so there is no need to install a driving source in the device, and the traction is wound around the pulley 20, so it is not It is necessary to wind up the drum, so that the whole device is small. In addition, as the rotary electric tool, a portable general tool for work such as the electric drive 15 can be used, so that it does not take time to prepare a special driving source. If the rotary power tool is a rechargeable type, there will be no trouble of routing the power cord, and it can also be used in places where it is difficult to obtain commercial power, such as the roof of the building or the outside of the building. Furthermore, by using a small-sized differential reduction type reduction gear unit body 6 with a large reduction ratio, when the restriction device 60 is released, the hanging rope 110 (132, 133) is removed from the entrance while reversing the pulley 20 When the part 32 is pulled out to the outside, it can perform a slow motion. Moreover, the rope inlet/outlet portion 31 is constituted by the inlet portion 32 and the outlet portion 33 arranged opposite to each other at a distance, and is formed so that 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 outside and the inlet 32 and the hanging rope 110 enters and exits between the outside and the outlet 33, the hanging rope 110 (132, 133) can easily load and unload the pulley 20. Furthermore, since the rope inlet/outlet portion 31 is provided at an interval from the pulley 20, and the inlet-side rope 110b (132b, 133b) and the outlet-side rope 110a (132a, 133a) are provided between the rope inlet/outlet portion 31 and the pulley 20 Part 40, it can prevent the exit side rope 110a (132a, 133a) from being entangled into the entrance side of the pulley 20 when the pulley 20 is rotating forward and the entrance side rope 110b (132b, 133b) from being entangled into the pulley 20 when the pulley 20 is reversed The exit side. In addition, since the support body 2 includes the catching portions 80 and 81 for the hanging rope 110 (132, 133) to be wound and caught, the tension is applied to the entrance side of the hanging rope 110 (132, 133) The restriction device 10 is lifted, but when the hanging rope 110 (132, 133) is to be moved outward from the inlet 32, the outlet-side rope 110a (132a, 133a) is wound in advance and caught in the catch 80 , 81, thereby preventing the hanging rope 110 (132, 133) from suddenly moving in the opposite direction when the restriction device 10 is lifted. Furthermore, by moving while slidingly contacting the catching portions 80 and 81, the friction brake can also function. Furthermore, when it is desired to release the restriction device 10 from restricting the movement of the rope from the entrance portion 32 toward the outside, the manual rotation tool 90 is used to manually rotate the input shaft 7 of the speed reducer body 6 forward and the pulley 20 slowly forward While rotating, the release operation is performed by the operating handle 71, and thus it can be easily released.

In addition, in the above embodiment, a rechargeable electric drive as an electric tool is taken as an example, but the present invention is not limited to this example, and may be other rotary electric tools such as electric drills. Furthermore, non-rechargeable power tools can also be used. Moreover, in the above embodiment, although a gap is left between the inlet and the outlet after the hanging rope is loaded, as shown in the rope traction apparatus 1A of FIGS. 18 and 19, the pulley cover 50A may be fitted The engaging portion extends upward and can be fitted to the upper ends of the inlet portion 32A and the outlet portion 33A, and an obstruction portion 140 is provided on the back side of the upper extension of the pulley cover 50A to block the inlet portion 32A and the outlet The gap 44A between the portions 33A prevents the inlet-side rope inserted into the inlet passage portion 34 of the inlet portion 32A from deviating toward the gap 44A and the outlet-side rope inserted into the outlet passage portion 35 of the outlet portion 33A from deviating toward the gap 44A. The blocking portion 140 prevents the hanging rope from deviating toward the gap 44A between the inlet 32A and the outlet 33A and colliding with the back of the upper end of the pulley cover 50A during the use of the rope traction device, thereby accidentally opening the pulley cover. Moreover, in the above-mentioned embodiment, although the helical spring is urged by the compression coil spring in the direction of the ratchet gear, it may be urged by a plate spring, a torsion spring, or the like. Moreover, in the above embodiment, the case where the restricting device that restricts the loaded rope to be pulled back from the inlet side has been described as an example in the case of providing the input shaft side of the differential reduction gear body as an example, but it may also be provided on the output shaft side . Then, the hanging rope that has a fulcrum at the upper end is hung down, the lower end of the hanging rope is mounted 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 be raised by being driven by a rechargeable electric drive or the like carried by it.

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

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

The rotating shaft 209 is rotatably mounted near the center of the cam 208, and the base end portion 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 a corner of the release operation member 210, and the release operation member 210 can be freely rotated around the rotation axis 209 by operating the operation protrusion 211 with a finger ( Refer to arrows K and L in FIG. 20. The front end side of the release operation member 210 is an engaging portion 212, which is bent in a J-shape and is detachably engaged with the outside of the bent portion 205 of the support plate 201. Between the rotating shaft 209 and the release operation member 210, a flat coil spring (not shown) that urges the release operation member 210 all the way counterclockwise in FIG. 20 is interposed.

The method of loading the rope of FIG. 20 on the rope pulling device 1B will be described. First, the operation protrusion 211 of the restricting device 200 is operated with a finger to rotate the cam 208 and the rotation of the release operation member 210 in parallel, as shown in FIG. 21 It is shown that the engaging portion 212 is engaged with the outside of the bent portion 205. The pulley cover 50 is opened to insert one end side of the hanging rope 110 to the rope insertion portion 202 of the restricting device 200, and then to the inlet passage portion 34 from the gap 44 between the inlet portion 32 and the outlet portion 33, passing through the separation portion 40 Less than one turn on the pulley 20 on the left side, inserted through the right side of the separation portion 40 from the gap 44 of the inlet portion 32 and the outlet portion 33 into the outlet passage portion 35 (refer to FIG. 21), wound and stuck in the stuck部80, 81.

Then, the pulley cover 50 is closed, and the operation protrusion 211 of the release operation member 210 is operated with a finger to unlock the engagement portion 212, and the rotation of the cam 208 and the rotation of the release operation member 210 are performed in parallel to make the cam 208 Approach the hanging rope 110 and remove your finger. The cam 208 is urged by the flat coil spring to the rope direction in which the outer peripheral portion 206 is inserted into the rope insertion portion 202 to be crimped to the hanging rope 110. When the hanging rope 110 is pulled downward (see arrow R in FIG. 22) at the exit side of the rope insertion portion 202, an external force in the counterclockwise direction is applied to the cam 208, but the outer peripheral portion 206 is away from the hanging rope In the direction of 110, the cam 208 tends to rotate 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, an external force in the clockwise direction is applied to the cam 208, but the outer peripheral portion 206 is close to hanging 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 sandwiched between 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 portions 80 and 81. When the input shaft 7 is rotated forward by the rechargeable electric drive 15, the pulley 20 is rotated forward. The restricting device 200 is in a direction allowing movement, so the hanging rope 110 is smoothly pulled. In the case where it is desired to stop the pulling of the hanging rope 110, the driving of the input shaft 7 by the charging electric driver 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 close to the hanging rope 110, the cam 208 Bite the hanging rope 110 to restrict movement. Therefore, the entrance-side rope 110b is not pulled back. When the inlet-side rope 110b is pulled upward in FIG. 22 and it is desired to be pulled back in the direction of being pulled, the outlet-side rope 110a is wound and caught in the catching portions 80, 81, so that the manual type The rotating tool 90 is coupled with the input shaft 7 and rotates forward, loosens the bite of the hanging rope 110 by the cam 208, and operates the operation protrusion 211 of the restricting device 200 with a finger to rotate the cam 208 and release the rotation of the operation member 210 in parallel As shown in FIG. 21, the engaging portion 212 is engaged with the outside of the bending portion 205. Then, when the holding force of the outlet-side rope 110a removed from the catching portions 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 inlet side.

According to the modification of FIG. 20, the entrance-side rope 110b can be restricted from being pulled back or being stopped without using the ratchet mechanism when the suspension rope 110 is towed or stopped, and it is possible to return the suspension rope 110 to its original position Lift the restriction. In addition, the rope insertion portion 202 of the restricting device 200 is provided on the inlet side of the support 2B relative to the inlet portion 32, so the rope path on the inlet side becomes longer, and the rope 110 can be hung more smoothly toward the pulley 20 Guide.

Another specific example of the cam-type restricting device is shown in FIGS. 23 and 24. In the rope traction device 1C of FIGS. 23 and 24, a cam-type restricting device 300 is installed between the exit portion 33, the pulley 20, and the catching portion 80 at the upper right of the front side of the support 2C. In the restricting device 300, the element symbol 301 is a support plate mounted on the upper right of the front side of the support 2C, and the right part is a U-shaped bent portion 305 with a rotating shaft 304 rotatably mounted inside . The base end of the cam 308 formed by protruding many 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 portion described later with the rotation shaft 304 as the rotation center (refer to arrows M and N in FIG. 24 ). Between the rotating shaft 304 and the cam 308, a flat coil spring (not shown) that urges the cam 308 in the counterclockwise direction in FIGS. 23 and 24 is provided.

A rotation shaft 309 is rotatably mounted near the center of the cam 308, and the base end portion of the L-shaped release operation member 310 is fitted into the rotation shaft 309. A cylindrical operation protrusion 311 protruding forward of the support 2C is provided at the corner of the release operation member 310, and the release operation member 310 can be freely rotated around the rotation shaft 309 by operating the operation protrusion 311 with a finger (See arrows O and Q in FIG. 24). The front end side of the release operation member 310 is an 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. Between the rotating shaft 309 and the release operation member 310, a flat coil spring (not shown) that urges the release operation member 310 all the way clockwise in FIGS. 23 and 24 is provided.

The separating portion 40C is a rope abutment portion 45 extending obliquely downward on the right side of FIGS. 23 and 24 and becoming loosely inserted into the H-shaped groove 21 of the pulley 20 outside the rope abutment portion 45 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 of the upper right portion of FIG. 23 so that even if the cam 308 and the release operation member 310 rotate, it does not interfere with the pulley cover 50C.

A method of loading the rope on the rope traction device 1C configured as shown in FIGS. 23 and 24 will be described. First, the operation protrusion 311 of the restricting device 300 is operated with a finger to rotate the cam 308 and release the operation member 310 in parallel Rotate, and engage the engaging portion 312 outside the bent portion 305 as shown in FIG. 25. Open the pulley cover 50C, insert one end side 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 wrap less than one turn on the pulley 20 through the left side of the separation portion 40C and insert The rope groove 46 of the rope guide 45 of the separation part 40C is inserted into the outlet passage 35 from the gap 44 between the inlet 32 and the outlet 33 (refer to FIG. 25), and is wound and caught in the catch 80. 81.

Then, the pulley cover 50C is closed, and the operation protrusion 311 of the release operation member 310 is operated with a finger to disengage the engagement portion 312, and the rotation of the cam 308 and the rotation of the release operation member 310 are performed in parallel to make the cam 308 Approach the hanging rope 110 and remove your finger. The cam 308 urges the outer peripheral portion 306 in the direction of the rope by a flat coil spring to press 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 outlet of the pulley 20 (near the inlet of the rope groove 46) toward the outlet portion 33 (see arrow T in FIG. 26), a clockwise external force is applied to the cam 308, However, since the outer peripheral portion 306 is away from the hanging rope 110 embedded in the rope groove 46, the cam 308 is easily rotated in the clockwise direction, allowing movement from the outlet portion 33 of the outlet-side rope 110a toward the outside. Conversely, when a force is applied to the hanging rope 110 in the direction of pulling upward from FIG. 26 (see arrow U in FIG. 26 ), an external force in the counterclockwise direction is applied to the cam 308, but the outer peripheral portion 306 is in In the direction approaching 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 sandwiched between the cam 308 and the rope abutment portion 45) .

When the traction of the hanging rope 110 is started, the outlet-side rope 110a is removed from the catching portions 80 and 81. When the input shaft 7 is rotated forward by the rechargeable electric drive 15, the pulley 20 is rotated forward. The restriction device 300 is in a direction allowing the movement of the hanging rope 110, so the hanging rope 110 is smoothly pulled. In the case where it is desired to stop the pulling of the hanging rope 110, the driving of the input shaft 7 by the charging electric driver 15 is stopped. When the entrance-side rope 110b is pulled above the entrance portion 32, the exit-side rope 110a of the rope groove 46 embedded in the rope abutment portion 45 is pulled toward the pulley 20 to apply a counterclockwise external force to the cam 308, However, since the outer peripheral portion 307 is in a direction close to the hanging rope 110, the cam 308 bites into the hanging rope 110 to restrict movement. Therefore, the hanging rope 110 is not pulled back. When the inlet-side rope 110b is pulled upward in the state of FIG. 26 and it is desired to return in the pulled direction, the outlet-side rope 110a is wrapped around and caught in the catching portions 80 and 81 to rotate the tool manually 90 is coupled with the input shaft 7 and rotates forward, loosens the bite of the hanging rope 110 by the cam 308, operates the operation protrusion 311 of the restricting device 300 with a finger, and rotates the cam 308 and releases the rotation of the operation member 310 in parallel, As shown in FIG. 25, the engaging portion 312 is engaged with the outside of the bent portion 305. Then, when the holding force of the outlet-side rope 110a removed from the catching portions 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 inlet side.

According to the modified examples of FIGS. 23 and 24, the entrance-side rope 110b can be pulled back while the traction rope 110 is towed or stopped without using a ratchet mechanism, and it is desirable to return the suspension rope 110 to its original position In this case, the restriction can be lifted. Furthermore, since the restricting device 300 is provided between the exit portion 33, the pulley 20, and the catching portion 80 in the support 2C, the device need not be large. Furthermore, since the hanging rope 110 is sandwiched by the rope contact portion 45 and the cam 308, the movement of the hanging rope 110 in the direction of being pulled back can be surely restricted. In addition, the restricting device 300 may be provided between the inlet portion 32 and the pulley 20 (in this case, the left side of the separation portion in FIGS. 23 and 24 may be extended diagonally downward to serve as the rope contact portion) . (Industry availability)

The present invention can be applied to a rope pulling device that pulls a rope to move an object or a person.

1. 1-1, 1-2, 1A, 1B, 1C 2, 2B, 2C‧‧‧support 3‧‧‧ opening 4‧‧‧ Rope installation hole 5‧‧‧Deceleration device 6‧‧‧Reducer body 7‧‧‧ input shaft 8‧‧‧ Output shaft 9‧‧‧Closed shell 10, 200, 300 ‧‧‧ limit 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‧‧‧tooth protrusion 30‧‧‧Rope guide 31‧‧‧Rope entrance and exit 32, 32A‧‧‧ Entrance 33、33A‧‧‧Export Department 34‧‧‧Entrance Department 35‧‧‧Exit Department 36, 37 38、39‧‧‧Snap slot 40、40C‧‧‧ Separation Department 41、42‧‧‧inclined surface 43‧‧‧ Mouth 44、44A‧‧‧Gap 50, 50A, 50C ‧‧‧ pulley cover 51‧‧‧Hinge Department 52‧‧‧fitting part 53‧‧‧Locking member 54、55‧‧‧Compression spring 56‧‧‧Long hole 57‧‧‧Operation Department 58‧‧‧ Engagement claw 60‧‧‧ratchet mechanism 61‧‧‧Remove device 62‧‧‧ratchet gear 63, 68, 204, 209, 304, 309 64‧‧‧Pawl 65‧‧‧Spring seat 66‧‧‧Compression coil spring 67‧‧‧ pressed part 69‧‧‧Pressing member 70‧‧‧Plug through hole 71‧‧‧Operation handle 72‧‧‧Pressing part 73‧‧‧Partial Circle 74‧‧‧Snap protrusion 75、76‧‧‧Snap recess 77, 78‧‧‧ margin 80, 81‧‧‧ stuck department 82、83‧‧‧Rope winding rod 84, 85‧‧‧ diamond stop 90‧‧‧Manual rotary tool 91‧‧‧Protrusion 92‧‧‧Rotating shaft 93‧‧‧handle 101‧‧‧ Building 102、104‧‧‧Retaining wall 103, 130, 131 105, 106, 138, 139 110, 132, 133 110a, 132a, 133a ‧‧‧ exit side rope 110b, 132b, 133b ‧‧‧ entrance side rope 111, 112, 134, 135, 136, 137‧‧‧ rope 113‧‧‧Relay pulley 114‧‧‧Front end pulley 140, 141‧‧‧ safety rope 201, 301‧‧‧ support board 202‧‧‧Rope insertion part 203, 205, 305 206, 306, 307 207‧‧‧tooth 208, 308‧‧‧cam 210, 310‧‧‧ release operation member 211, 311‧‧‧ protrusion 212, 312 400‧‧‧ 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 an external perspective view of an embodiment of a rope pulling device (Embodiment 1). Figure 2 is a front view of the rope traction device. Figure 3 is a side view of the rope traction device. Fig. 4 is a plan view of the rope pulling device. Figure 5 is a rear view of the rope traction device. Fig. 6 is a perspective view of the rope traction device omitting the pulley cover and the hinge portion. 7 is a side view of the rope traction device with the pulley cover omitted. Fig. 8 is a perspective view of the rope traction device omitting the pulley cover and the pulley. (1) in FIG. 9 is a perspective view of the locking member of the locking pulley cover, (2) in FIG. 9 is a front view, (3) in FIG. 9 is a plan view, and (4) in FIG. 9 is a side view. 10 is a rear view of the rope traction device with the outer cover omitted. FIG. 11 is an enlarged view showing a part of the configuration of the restriction device omitted. 12 is an explanatory diagram of the function of the limiting device. (1) in FIG. 13 is an explanatory diagram of a rechargeable electric drive that drives a rope traction device, and (2) in FIG. 13 is a cross-sectional view taken along line XIII-XIII' of (1) in FIG. 13. (1) in FIG. 14 is an explanatory view of a manual rotary tool that drives a rope traction device, and (2) in FIG. 14 is a cross-sectional view taken along line XIV-XIV' of (1) in FIG. 14. 15 is an explanatory diagram of a method of using the rope traction device. 16 is an explanatory diagram of a method of using the rope traction device. 17 is an explanatory diagram of another method of using the rope traction device. 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. 20 is a front view showing another modification of the rope pulling device. FIG. 21 is an explanatory diagram of a method of using the rope traction device of FIG. 20, and the pulley cover is omitted. 22 is an explanatory diagram of a method of using the rope pulling device of FIG. 20. Fig. 23 is a partially broken front view showing still another modification of the rope pulling device. Fig. 24 is a front view of the rope traction device of Fig. 23 with the pulley cover omitted. FIG. 25 is an explanatory diagram of a method of using the rope traction device of FIG. 23, and the pulley cover is omitted. FIG. 26 is an explanatory diagram of a method of using the rope traction 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‧‧‧tooth protrusion

30‧‧‧Rope guide

31‧‧‧Rope entrance and exit

32‧‧‧ Entrance

36‧‧‧The fitted part

40‧‧‧ Separation Department

41‧‧‧inclined surface

43‧‧‧ Mouth

51‧‧‧Hinge Department

71‧‧‧Operation handle

80, 81‧‧‧ stuck department

Claims (13)

A rope traction device with: The differential reduction type reduction device has an input shaft that is detachably connected to the output shaft of the rotary electric tool, and an output shaft that is combined with a pulley that is detachably rewound for rope winding, and decelerates the rotation applied to the input shaft. Transfer to the output shaft; Support body, equipped with deceleration device; The entrance part and the exit part are provided on the support body to form the entrance and exit of the rope wound around the pulley; and The restriction device is provided on the deceleration device or the support body, and the entrance side of the restriction rope is pulled out to the outside. The rope traction device as described in claim 1, wherein the restricting device includes: The ratchet mechanism, combined with the input shaft or output shaft of the speed reduction device, allows the rope to rotate in the direction of pulling from the inlet to the pulley, restricting the rotation in the opposite direction to restrict the rope from being pulled out from the inlet to the outside; and Remove the device and remove the restriction of the ratchet mechanism. The rope traction device as described in claim 1, wherein the restricting device includes: The cam is configured to bite into the rope when the rope is going to be pulled out from the entrance to the outside to restrict movement, and to move away from the rope when it is going to move in the opposite direction to allow movement; A force-applying device that applies force to the cam in a direction to bite into the rope; and Release the device and move the cam away from the rope to release the restriction. The rope traction device as described in claim 1, wherein the restricting device includes: The rope abutment part is provided in the middle of the path through which the rope passes and is used for the rope abutment; The cam is configured to bite into the rope that has come into contact with the rope abutment portion when the rope is going to be pulled out from the entrance to the outside to restrict movement, and to move away from the rope when the rope is going to move in the opposite direction to allow movement; A force-applying device that applies force to the cam in a direction to bite into the rope; and Release the device and move the cam away from the rope to release the restriction. The rope traction device according to claim 4, wherein the rope abutment portion is provided outside the inlet portion or between the inlet portion and the pulley or between the pulley and the outlet portion. The rope traction device according to any one of claims 1 to 5, wherein the inlet portion and the outlet portion are provided at a distance from the pulley; and Between the inlet portion and the outlet portion and the pulley, a separation portion is provided to separate the inlet-side rope and the outlet-side rope. The rope traction device as described in claim 4, wherein the inlet portion and the outlet portion are provided at a distance from the pulley; and A separation part is provided between the entrance part and the exit part and the pulley to separate the entrance side rope and the exit side rope; The rope contact portion is provided integrally with the separation portion. The rope traction device as described in any one of claims 1 to 5, which includes: The pulley cover covers the front surface of the pulley freely when the support is opened and closed; and Lock the device to lock or unlock the pulley cover. The rope traction device as described in claim 8, wherein the inlet and the outlet are arranged facing each other at a distance; It is formed to allow the rope to enter and exit between the outside and the inlet through the gap between the inlet and the outlet, or to allow the rope to enter and exit between the outside and the outlet; An obstruction portion is provided on the pulley cover. The obstruction portion enters the gap between the entrance portion and the exit portion when the lock is closed to prevent the rope from falling off from the entrance portion or the exit portion. The rope pulling device according to any one of claims 1 to 5, wherein the support body is provided with a rope attachment portion for attaching the rope. The rope traction device according to any one of claims 1 to 5, wherein the supporting body is provided with a catching portion that catches the rope. The rope traction device according to any one of claims 1 to 5, wherein the rotary electric tool is a rechargeable type. The rope traction device as described in any one of claims 1 to 5, which includes a manual rotation tool, and the manual rotation tool detachably detaches the input shaft of the reduction gear and rotates the input shaft manually.

Images