JP5677493B2 - Rope towing device - Google Patents

Description

  The present invention relates to a rope traction device, and more particularly, to a rope traction device capable of preventing a moving speed of a wire rope from exceeding a set value.

  For elevating machinery used for construction cargo handling such as gondola and elevator, wind the wire rope suspended vertically in the sheave and rotate the sheave to pull the wound wire rope Some have provided a rope pulling device that moves along the wire rope.

  In the conventional rope pulling device, a rope holding groove for holding the rope is provided on the outer periphery of the sheave, and both side walls of the outer periphery of the sheave forming the rope holding groove are formed of an elastic body integrally with the sheave. In some cases, the groove shape can be deformed by forming the distance between both side wall portions of the wire so as to be smaller than the diameter of the wire rope by a predetermined value. (Patent Document 1)

  Further, in the conventional rope pulling device, the rope holding groove on the outer periphery of the sheave is formed by both side plates, and both side plates in contact with the side surfaces of the rope are made of an elastic body, and the distance between both side plates is predetermined than the diameter of the wire rope. There is one in which both side plates are attached to the sheave by bolts from both sides at positions opposed to each other in the circumferential direction of the sheave so as to decrease by a value. (Patent Document 2)

JP-A-7-33391 JP-A-5-32395

  However, in the conventional rope towing device, as a speed control method of the lifting machine, there is one that uses a mechanical brake to brake the rotation of the sheave around which the wire rope is wound. When it becomes impossible to brake the rotation of the wire rope, there is a problem that the moving speed of the wire rope exceeds the set value and the speed of the lifting machine cannot be controlled.

The present invention relates to a rope pulling device that moves along a wire rope by winding the wire rope suspended vertically in a sheave and pulling the wound wire rope by rotating the sheave. In the rope traction device, the sheave is rotatably supported around an axis oriented in the horizontal direction inside the traction device case, and a rope clamping groove for clamping the wire rope is integrally provided on the outer periphery of the sheave. Wrap the wire rope introduced inside from the rope entrance at the top of the traction device case from the horizontal direction one side in the radial direction of the rope holding groove to the upper side through the lower side in the vertical direction, A wire rope is extended from the upper side in the radial direction of the rope holding groove to the substantially horizontal side and taken out from the rope holding groove. After that, it is bent downward and led out to the outside from the rope outlet at the lower part of the traction device case, and when the moving speed of the wire rope exceeds the set value at the upper part of the traction device case, it is used for braking. A brake device is provided, and the emergency brake device fixes the wire rope inside the emergency brake case so as to prevent movement while sandwiching the wire rope from both sides in the radial direction, and releases the wire rope to allow the wire rope to move. A fixing mechanism is provided, and an operation mechanism for operating the rope fixing mechanism between a fixed state and a released state is provided. The operation of the operating mechanism is blocked to hold the rope fixing mechanism in a released state, and the operation mechanism is blocked. Is provided and a holding mechanism that operates the rope fixing mechanism in a fixed state is provided, and the moving speed of the wire rope is set. If it is less than this, the operation of the operation mechanism by the holding mechanism is continued to be kept, the rope fixing mechanism is held in the released state, and when the moving speed of the wire rope becomes a set value or more, the operation mechanism by the holding mechanism A speed determination mechanism is provided that releases the movement prevention and operates the rope fixing mechanism in a fixed state .
The speed determination mechanism includes a speed detection roller that is pressed against the wire rope that is clamped on the upper side in the up-down direction in the radial direction of the rope clamping groove provided on the sheave, and the speed detection roller is a speed parallel to the axis of the sheave. The speed detection governor is provided with a pair of weights that can be expanded and contracted with respect to the center of rotation, and the rotational speed at which the moving speed of the wire rope is less than a set value is provided. While the pair of weights is contracted and energized so as to continue the blocking of the operation mechanism by the holding mechanism, the pair of weights are expanded at a rotational speed at which the moving speed of the wire rope is equal to or higher than a set value. A pair of governor springs that allow opening and release of the operation mechanism of the operation mechanism by the holding mechanism are provided, and the pair of governor springs rotate the speed detection governor. Sealed multiplied respectively one end to a fixed shaft provided upright in mind, seals hanging on the pair of the weight to extend the other end in each radially symmetrical directions,
The speed detection governor is provided with an interlocking mechanism that interlocks the expansion / contraction operation of one weight with the expansion / contraction operation of the other weight, and the interlocking mechanism is located at the rotation center of the speed detection governor. The center of the link plate is rotatably supported on the fixed shaft that is erected, and long holes are formed in the vicinity of both ends in the longitudinal direction of the link plate, and the long holes are respectively attached to the pair of weights. The pin is slidably engaged .

  The rope traction device of the present invention can be stopped and stopped by the emergency brake device when the movement speed of the wire rope exceeds a set value, with the wire rope being sandwiched.

It is a schematic side view of the wire rope wound around the sheave and the pressing mechanism showing an embodiment of the rope pulling device. It is an expanded sectional view by the II-II line of FIG. It is a front view in the state where the emergency brake device of the rope traction device was exposed. It is sectional drawing by the IV-IV line of FIG. It is an expanded sectional view of a reduction gear. It is an expanded sectional view of a brake device. It is a rear view of the input-shaft side connection body by the arrow VII of FIG. It is sectional drawing by the VIII-VIII line of FIG. It is a rear view of the motor-axis side connection body by the arrow IX of FIG. It is a top view of a stepped key. It is a side view of a stepped key. FIG. 7 is a rear view of the brake lining and the brake disc taken along an arrow line XII in FIG. It is a top view of a brake release knob. It is a front view of a brake release knob. It is a front view of a knob cover and a brake release handle. It is an expanded sectional view of the emergency brake device by the XVI-XVI line of FIG. It is sectional drawing of the emergency brake device by the XVII-XVII line of FIG. It is sectional drawing of the emergency brake device by the XVIII-XVIII line of FIG. It is a front view of a speed detection governor. It is sectional drawing of the speed detection governor by the XX-XX line of FIG. The interlocking mechanism of a speed detection governor is shown, (A) is a front view of the speed detection governor in the contraction operation state, and (B) is a front view of the speed detection governor in the expansion operation state.

The rope traction device of the present invention stops the movement with the wire rope sandwiched when the moving speed of the wire rope exceeds a set value by the emergency brake device.
Hereinafter, embodiments of the present invention will be described in detail and specifically with reference to the drawings.

  1 to 21 show an embodiment of the present invention. 3 and 4, 2 is a wire rope, and 4 is a rope pulling device. The rope traction device 4 includes a traction device case 6 composed of a one-side traction device case portion 8 and an other-side traction device case portion 10 and is connected by a mounting bolt (not shown) to wind the wire rope 2 around the internal traction space 12. An annular plate-shaped sheave 14 to be hung is provided so as to be rotatable about an axis C oriented in the horizontal direction.

  The sheave 14 is integrally provided with a rope holding groove 16 for holding the wire rope 2 on the outer periphery, and is provided with cylindrical bearing support portions 18 and 20 protruding on both sides in the axis C direction, and on the inner periphery on the bearing support portion 20 side. The brake flange 22 is provided so as to protrude toward the center side. The sheave 14 is supported by the bearings 24 and 26 supported by the bearing support portions 18 and 20 so as to be rotatable about the axis C to the one side traction device case portion 8 and the other traction device case portion 10 of the traction device case 6. Provided.

  The rope traction device 4 is provided with a rope inlet 28 at the top of the tangential traction device case 6 oriented in the vertical direction of the rope holding groove 16 of the sheave 14 and a rope outlet 30 at the bottom of the traction device case 6. A rope takeout guide 32 and a rope bending guide 34 are provided between the rope inlet 28 and the rope outlet 30 adjacent to each other in the tangential direction directed in the vertical direction of the holding groove 16. The rope inlet 28 is provided in an emergency brake case 198 of an emergency brake device 200, which will be described later, provided integrally with the upper part of the traction device case 6.

  The rope traction device 4 passes the wire rope 2 introduced from the rope inlet 28 at the top of the traction device case 6 into the internal traction space 12 from the horizontal side in the radial direction of the rope holding groove 16 of the sheave 14 to the lower side in the vertical direction. The wire rope 2 is wound from the other side to the upper side, and the wire rope 2 is extended from the upper side in the radial direction of the rope holding groove 16 to one side in the substantially horizontal direction and taken out from the rope holding groove 16 by the rope takeout guide 32. After that, the rope is bent downward by the rope bending guide 34 and led out from the rope outlet 30 below the traction device case 6.

  The rope traction device 4 is provided with a pressing mechanism 36 that presses the wire rope 2 held on the upper side in the radial direction of the rope holding groove 16 against the rope holding groove 16 side. As shown in FIGS. 1 and 2, the pressing mechanism 36 moves upward in the vertical direction from the beginning of winding on the one side in the horizontal direction in the radial direction of the rope holding groove 16 to the first set winding angle θ1 (for example, about 250 degrees). It is provided close to the rope holding groove 16 located. The pressing mechanism 36 is provided with two swing plates 38 and 40 disposed so as to face each other in the width direction of the rope holding groove 16 located on the upper side, and between the two swing plates 38 and 40. Two pressing rollers 42 and 44 are pivotally supported at an interval L according to the pitch between the ridges and valleys of the strands in the longitudinal direction of the wire rope 2 in which the strands (not shown) are further aligned with each other. The swing plates 38 and 40 are supported on the traction device case 6 so as to be swingable by a swing shaft 46 directed in the width direction of the rope holding groove 16 between the two pressing rollers 42 and 44.

  The rope traction device 4 is provided with a motor 48 on one side traction device case 8 on one side in the axis C direction of the traction device case 6, and a motor on the other traction device case 10 on the other side in the axis C direction of the traction device case 6. A speed reducer 50 that decelerates the rotation of 48 and transmits it to the sheave 14 is provided. The motor 48 has a motor shaft 52, which is a drive shaft, inserted into the traction space 12, and the other end is rotatably inserted into one end of the input shaft 54.

  As shown in FIG. 5, the speed reducer 50 is mounted such that the input shaft 54 penetrates the input side speed reducer shaft 56 and is movable in the axial direction and not circumferentially by a key 58. The speed reducer shaft 56 is provided with a plurality of eccentric portions 60 in this embodiment on the outer periphery, and the inner periphery of the curved plate 64 is pivotally supported on each eccentric portion 60 by a bearing 62. The three curved plates 64 pivotally supported by the three eccentric portions 60 engage the outer peripheral curved tooth portion 66 with the outer pin 70 that is one or two fewer than the curved tooth portion 66 on the inner periphery of the frame 68, An inner pin 74 is loosely fitted in each through hole 72 in the middle in the radial direction, and the inner pin 74 is fixed to the output side flange member 76 on one side in the axis C direction.

  The speed reducer 50 is provided with a speed reducer cover 78 that covers the other side in the axis C direction, and one side in the axis C direction of the speed reducer shaft 56 is pivotally supported on the flange member 76 by a bearing 80 and the other side in the axis C direction of the speed reducer shaft 56. Is supported on a reduction gear cover 78 by a bearing 82. In the speed reducer 50, the flange member 76 is attached to the brake flange 22 of the sheave 14 by the flange attaching bolt 83, and the speed reducer cover 78 is attached to the other traction device case portion 10 together with the frame body 68 by the cover attaching bolt 84.

  Thus, the motor 48 and the speed reducer 50 connect the motor shaft 52 and the speed reducer shaft 56 via the input shaft 54, and the motor shaft 52, the input shaft 54, and the speed reducer shaft 56 are on the axis C. It is arranged. The speed reducer 50 inputs the rotation of the motor 48 from the motor shaft 52 to the speed reducer shaft 56 via the input shaft 54, and decelerates the rotation of the speed reducer shaft 56 by the eccentric portion 60, the curved plate 64, and the outer pin 70. This is transmitted to the sheave 14 via the flange member 76 by the pin 74.

  As shown in FIGS. 6 to 12, the rope traction device 4 includes a brake device 86 that brakes the rotation of the sheave 14 between the sheave 14 and the input shaft 54. As shown in FIG. 6, the brake device 86 is integrally provided with an input shaft side connecting body 88 having a large diameter on one side in the axis C direction of the input shaft 54. The input shaft side connecting body 88 is provided with a cylindrical input shaft side boss portion 90 having a large diameter, and a motor shaft insertion hole 92 into which the motor shaft 52 is inserted into the input shaft side boss portion 90. An input shaft side flange portion 94 is provided on the outer periphery of one end of the boss portion 90 in the axis C direction.

  The motor shaft 52 is inserted into the motor shaft insertion hole 92 from one side in the axis C direction to the input shaft side boss portion 90, and the one end in the axis C direction of the speed reducer shaft 56 is brought into contact with the other end in the axis C direction. The As shown in FIGS. 7 and 8, the input shaft side flange portion 94 is formed with three circular holes 96 at circumferentially equidistant positions, and the circumferentially equidistant positions between the three circular holes 96 are formed. Three oblong holes 98 extending in the circumferential direction are formed, and three inclined surfaces 100 that are recessed in three substantially V shapes extending on both sides in the circumferential direction are formed on one side surface in the axis C direction with the three circular hole 96 portions as the deepest portion. ing.

  In the brake device 86, a motor shaft side connection body 102 is provided on the motor shaft 52. As shown in FIG. 9, the motor shaft side connecting body 102 is provided with a large-diameter cylindrical motor side boss portion 104, and a motor shaft insertion hole 106 into which the motor shaft 52 is inserted into the motor shaft side boss portion 104. The motor shaft side flange 108 is provided on the outer periphery of the other end of the motor shaft side boss 104 in the direction of the axis C.

  The motor shaft side boss 104 has the motor shaft 52 inserted into the motor shaft insertion hole 106 from one side in the axis C direction, and can be moved axially to the motor shaft 52 by the stepped key 110 shown in FIGS. It is mounted so that it cannot move. The motor shaft side flange portion 108 is provided with three contact bodies 112 respectively in contact with the three inclined surfaces 100 centered on the three circular holes 96 at equal circumferential positions in the circumferential direction. The three engagement pins 114 engaged with the three oval holes 98 are mounted from the other side surface in the axis C direction at equidistant positions in the circumferential direction between the three contact bodies 112. Protrusively attached.

  The motor shaft 52 and the input shaft 54 are relatively rotated by the circumferential length of the oval hole 98 by the engaging pin 114 of the motor shaft side flange portion 108 that engages with the oval hole 98 of the input shaft side flange portion 94. Contact is possible. Further, the motor shaft side connection body 102 is in accordance with the relative rotation angle between the motor shaft 52 and the input shaft 54 by the contact body 112 of the motor shaft side flange portion 108 that contacts the inclined surface 100 of the input shaft side flange portion 94. Is moved in the direction of the axis C.

  The brake device 86 has a plurality of brake bolts 116 attached to circumferentially equidistant positions on the outer peripheral side of the brake flange 22 of the sheave 14. In this embodiment, six brake bolts 116 are provided, and the six brake bolts 116 are arranged at equal circumferentially spaced positions on the outer peripheral side of the brake flange 22, and the axis C from the other side in the axis C direction of the brake flange 22 of the sheave 14. It is attached to protrude in one direction.

  In the brake device 86, a plurality of brake disks 118 and brake linings 120 are alternately stacked between the brake flange 22 of the sheave 14 and the input shaft side connection body 88 of the input shaft 54. In this embodiment, two brake linings 120 are alternately stacked between three brake discs 118.

  As shown in FIG. 12, the brake disk 118 is engaged with the brake bolt 116 at six outer circumferential grooves 122 provided at equal circumferential positions on the outer circumference, and is slightly movable in the direction of the axis C with respect to the brake bolt 116. It is provided so that it cannot rotate. The brake lining 120 is provided on the protrusion 130 of the clutch housing 128 of the one-way clutch mechanism 126 in which six inner peripheral recesses 124 provided at equal circumferential circumferential positions on the inner periphery are mounted on the input shaft side boss 90 of the input shaft 54. The clutch housing 128 is slightly movable in the direction of the axis C and non-rotatable.

  The one-way clutch mechanism 130 separates the brake lining 120 from the rotation of the input shaft 54 when the motor 48 rotates upward, and transmits the rotation of the input shaft 54 to the brake lining 120 when the motor 48 rotates downward.

  The brake disc 118 and the brake lining 120 are pressed against the brake flange 22 of the sheave 14 on the other side in the axis C direction by a brake pressing body 132 on one side in the axis C direction. As shown in FIG. 6, the brake pressing body 132 includes an annular plate-shaped inner peripheral portion 134 into which the motor shaft-side boss 104 of the motor shaft-side connecting body 102 is inserted, and an outer edge of the inner peripheral portion 134 to the motor shaft side. A cylindrical intermediate portion 136 extending to the other side in the axis C direction so as to cover the flange portion 108 and the input shaft side flange portion 94, and a brake disc extending radially outward from the outer edge of the other end of the intermediate portion 136 in the axis C direction. The outer peripheral portion 138 having an annular plate shape opposed to 118 is formed in a substantially hat shape in cross section.

  The brake pressing body 132 is provided with three notches 140 at circumferentially equidistant positions on the outer peripheral portion 138, and three insertion holes 142 are provided at circumferentially equidistant positions between the three notches 140. The brake pressing body 132 abuts the inner peripheral portion 134 through which the motor shaft side boss portion 104 of the motor shaft side connecting body 102 is inserted into the motor shaft side flange portion 108 via the thrust bearing 144, and Three brake bolts 116 are inserted into the two notches 140, and the remaining three brake bolts 116 are inserted into the three insertion holes 142 of the outer peripheral portion 138.

  A retainer 148 is fixed to the three brake bolts 116 inserted into the notch 140 of the brake pressing body 132 by screwing a nut 146 on one side end in the axis C direction, and the retainer 148, the brake disc 118, During this time, the first brake spring 150 is compressed and attached. The remaining three brake bolts 116 inserted through the insertion holes 142 of the brake pressing body 132 are screwed with nuts 146 on one side end in the direction of the axis C to fix the retainer 148, and the retainer 148 and the brake disc 118. The second brake spring 152 is compressed and mounted between the outer peripheral portion 138 and the outer peripheral portion 138 facing each other.

  The brake device 86 includes a first brake mechanism 154 including the brake flange 22 of the sheave 14, the brake disc 118, the brake lining 120, the one-way clutch mechanism 126, and the first brake spring 150 attached to the three brake bolts 116. The brake flange 22 of the sheave 14, the input shaft side connecting body 88, the motor shaft side connecting body 102, the brake disc 118, the brake lining 120, the one-way clutch mechanism 126, the brake pressing body 132, and the remaining three brake bolts 116 are mounted. The second brake mechanism 156 is configured by the second brake spring 152 thus formed.

  In the brake device 86, the first and second brake mechanisms 154 and 156 are disconnected by the one-way clutch mechanism 126 being disconnected from the input shaft 54 by the one-way clutch mechanism 126 during the upward rotation of the motor 48. The rotation of 52 is transmitted from the input shaft 54 to the speed reducer shaft 56 of the speed reducer 50 to rotate the sheave 14.

  At this time, as shown in FIG. 7, the brake device 86 moves the engagement pin 114 of the motor shaft side connecting body 102 within the oblong hole 98 of the input shaft side connecting body 88 and hits the end in the upward rotation direction. In contact therewith, the contact body 112 of the motor shaft side flange portion 108 moves to the deepest side of the inclined surface 100 of the input shaft side flange portion 94, but is separated by the one-way clutch mechanism 126, and the brake desk 118 and the brake lining are separated. 120 is not pressed.

  Further, when the motor 48 is rotated downward, the brake device 86 is coupled with the input shaft 54 and the brake lining 120 by the one-way clutch mechanism 126 to rotate integrally, and the three first brakes constituting the first brake mechanism 154 are configured. The rotation of the sheave 14 is braked by the rotation difference between the brake desk 118 and the brake lining 120 that are pressed by the spring 150.

  Further, when the rotation of the motor 48 is lowered, the brake device 86 rotates at the input shaft 54 side faster than the motor shaft 52, and the motor shaft side flange 108 of the motor shaft side connection body 102 is input to the input shaft side connection body 88. Since the contact body 112 of the motor shaft side flange portion 108 moves to the deepest side of the inclined surface 100 of the input shaft side flange portion 94 by moving by a rotational difference with respect to the shaft side flange portion 94, the second brake The brake pressing body 132 is moved to the brake desk 118 side by the spring 152.

  As a result, when the rotation of the motor 48 is lowered, the brake device 86 is pressed by the three first brake springs 150 constituting the first brake mechanism 154 when the rotation on the input shaft 54 side becomes faster than the motor shaft 52. Along with the braking by the desk 118 and the brake lining 120, the rotation of the sheave 14 is braked by the rotational difference between the brake desk 118 and the brake lining 120 pressed by the three second brake springs 152 constituting the second brake mechanism 156. Begin to.

  Furthermore, since the motor shaft 52 does not rotate when the motor 48 is stopped, the brake device 86 includes the brake desk 118 and the brake lining 120 that are pressed by the three first brake springs 150 constituting the first brake mechanism 154. While braking the rotation of the sheave 14, the contact body 112 of the motor shaft side connection body 102 returns to the deepest portion of the inclined surface 100 of the input shaft side connection body 88, and the brake pressing body 132 is moved to the brake desk 118 side. Therefore, the rotation of the sheave 14 is braked by the brake desk 118 and the brake lining 120 that are pressed by the three second brake springs 152 constituting the second brake mechanism 156.

  As described above, the brake device 86 includes the first brake mechanism 154 that brakes the rotation of the sheave 14 so as to limit the lowering speed of the rope pulling device 4 when the motor 48 rotates downward, and the rope pulling when the motor 48 stops rotating. A second brake mechanism 156 that cooperates with the first brake mechanism 154 to brake the rotation of the sheave 14 so as to maintain the stopped state of the apparatus 4 is provided, and the rope traction device 4 is raised when the motor 48 is rotated upward. Thus, a one-way clutch mechanism 126 that separates the first brake mechanism 154 and the second brake mechanism 156 from the input shaft 54 is provided.

  As shown in FIG. 5, the brake device 86 includes a brake release mechanism 158 that can release a braking operation when the rotation of the motor 48 is stopped. The brake release mechanism 158 is provided with a brake release step portion 160 on the input shaft 54 that protrudes to the other side in the axis C direction through the speed reducer shaft 56 of the speed reducer 50. A supported brake release knob 164 is provided.

  As shown in FIGS. 13 and 14, the brake release knob 164 is formed in a cylindrical shape, and is provided with a shaft support step portion 168 on one side of the inner peripheral through hole 166 in the axis C direction. The brake release knob 164 is provided with a shaft support step 168 that is pivotally supported by a bearing 162 on the brake release step 160 of the input shaft 54 so as to be relatively rotatable and not movable in the axial direction. The brake release knob 164 is provided with three substantially V-shaped inclined surfaces 170 that extend in the circumferential direction at circumferentially equidistant positions on the other end surface in the axis C direction.

  The brake release knob 164 is inserted into a knob cover 174 that is attached to the speed reducer cover 78 by a mounting bolt 172. The knob cover 174 has an annular plate-shaped attachment portion 176 attached to the reduction gear cover 78, and a cylindrical extension portion 178 extending from the inner periphery of the attachment portion 176 to the other side in the axis C direction so as to cover the brake release knob 164. The extended portion 178 is formed in a substantially hat shape in cross section from an annular plate-shaped end edge portion 180 extending in the central direction at the other end in the axis C direction and facing the inclined surface 170.

  The knob cover 174 is provided with a knob insertion hole 182 into which the brake release knob 164 is inserted in the extension part 178, and a release operation hole part 184 that penetrates the knob insertion hole 182 below the extension part 178 and extends in the circumferential direction. And a manual operation hole 186 that penetrates the knob insertion hole 182 is provided at the center of the end edge 180, and is in contact with the inclined surface 170 of the brake release knob 164 at a circumferentially equidistant position on the outer periphery of the end 180. Two abutting bodies 188 are attached so as to protrude into the knob insertion hole 182.

  The knob cover 174 attached to the speed reducer cover 78 with the mounting bolt 172 has the brake release knob 164 inserted into the knob insertion hole 182 in the extension 178, and the brake release inserted through the release operation hole 184 from below. The base end of the handle 190 is attached to the brake release knob 164, and the contact body 188 of the end edge 180 is brought into contact with the inclined surface 170 of the release knob 164.

  The contact body 188 is normally in contact with the deepest portion of the inclined surface 170 of the brake release knob 164, and moves the brake release knob 164 to the other side in the axis C direction. When the brake release knob 164 is rotated in the circumferential direction, the abutting body 188 moves the inclined surface 170 and comes into contact with the shallowest portion. Move to one side in C direction.

  As shown by an arrow in FIG. 15, when the rake release knob 164 is rotated in the circumferential direction within the range of the operation angle θ3, the brake release handle 190 causes the inclined surface 170 that contacts the contact body 188 from the deepest portion to the deepest. By moving to the shallow portion side, the brake release knob 164 is moved to one side in the axis C direction, and the input shaft 54 is moved to one side in the axis C direction via the bearing 162.

  Thus, when the brake release mechanism 158 rotates the brake release knob 164 in the circumferential direction by the brake release handle 190, the input shaft side connection body 88 on the one side in the axis C direction of the input shaft 54 causes the motor shaft side connection body 102 to move. The second brake mechanism 156 is moved to one side in the axis C direction, and the brake pressing body 132 is moved to one side in the axis C direction against the second brake spring 152 via the motor shaft side connecting body 102. Release the braking operation.

  As shown in FIG. 5, the brake device 86 is provided with a manual drive mechanism 192 that can manually rotate the sheave 14 when the rotation of the motor 48 is stopped. The manual drive mechanism 192 is provided with a manual handle connecting portion 194 that continues to the brake release step portion 160 at the shaft end of the input shaft 54 that protrudes to the other side in the axis C direction through the speed reducer shaft 56 of the speed reducer 50. ing. An attachment portion 198 of the manual handle 196 inserted from the manual operation hole 186 at the center of the end edge portion 180 of the knob cover 174 is detachably attached to the manual handle connection portion 194.

  When the input shaft 54 is rotated by the manual handle 196 attached to the manual handle connecting portion 194 at the shaft end of the input shaft 54, the manual drive mechanism 192 passes through the speed reducer 50 by the speed reducer shaft 56 connected to the input shaft 54. The sheave 14 can be rotated and the rope traction device 4 can be raised and lowered.

  The rope traction device 4 is provided with an emergency brake device 200 that brakes the movement of the wire rope 2 when the movement speed of the wire rope 2 becomes a set value or more above the traction device case 6. As shown in FIG. 4, the emergency brake device 200 is integrated with the one-side emergency brake case portion 204 in which the emergency brake case 202 is provided integrally with the one-side traction device case portion 8 and the other-side traction device case portion 10. And an emergency brake space 208 that communicates with the traction space 12 is provided inside the emergency brake case 202 so that the emergency brake case portion 206 is emergency. A brake cover 210 is attached and an emergency brake auxiliary space 212 is provided inside.

  As shown in FIGS. 16 to 18, the emergency brake device 200 includes a rope fixing mechanism 214, an operation mechanism 216, a holding mechanism 218, and a speed determination mechanism 220.

  16 and 17, the rope fixing mechanism 214 is positioned on one side in the radial direction of the wire rope 2 in the emergency brake space 208, and the fixed wedge member 222 is fixed to the emergency brake case 202 by a fixing bolt 224. A moving-side wedge member 226 is provided so as to be movable in the vertical direction by the operation mechanism 216 by being positioned on the other radial side of the wire rope 2 so as to face the fixed-side wedge member 222. A wedge receiving member 228 is fixed to the emergency brake case 202 so as to be positioned on the opposite side of the fixed-side wedge member 222 with respect to 226.

  A fixed rope fixing groove 230 and a movable rope fixing groove 232 that are shallower than the radius of the wire rope 2 are provided on the opposite sides of the fixed wedge member 222 and the movable wedge member 226, respectively. On the opposite side of the moving side wedge member 226 and the wedge receiving member 228, there are a moving side inclined surface 234 and a wedge receiving side inclined surface 236 that are inclined so that the upper side is closer to the fixed side wedge member 222 than the lower side. Each is provided. The moving-side inclined surface 234 and the wedge-receiving-side inclined surface 236 move the moving-side wedge member 226 moving in the upward direction in a direction approaching the fixed-side wedge member 222 and moving in the downward direction. The 226 are inclined with respect to each other so as to move in a direction away from the fixed wedge member 222.

  In this way, the rope fixing mechanism 214 fixes the emergency rope space 208 so as to prevent the movement by sandwiching the wire rope 2 from both sides in the radial direction, and releases it so as to allow the movement of the wire rope 2. A wedge member 222, a moving wedge member 226, and a wedge receiving member 228 are provided.

  As shown in FIGS. 16 and 17, the operation mechanism 216 has an operation axis parallel to an axis C that is penetrated by the wedge receiving member 228 and supported by the other emergency brake case 206 and the emergency brake cover 210. 238 is provided. A pair of operation levers 240 are attached to the operation shaft 238 so as to be positioned on both sides of the wedge receiving member 228 in the emergency brake space 208 in the width direction. The operation lever 240 is provided with an oval operation hole 242 at the tip, and a movement pin 244 protruding from the moving wedge member 226 is slidably engaged with the operation hole 242.

  In the emergency brake auxiliary space 212, the operating shaft 238 is provided with an operating spring 246 that rotates and biases the operating lever 240 counterclockwise in FIG. 17 to move the moving wedge member 226 upward. It is installed with torsional compression. The operation shaft 238 has an emergency brake release knob 248 attached to the outer end protruding from the emergency brake cover 210. The operation lever 240 is rotated in the range of the operation angle θ4 between the upper release position and the lower fixed position.

  The operation mechanism 216 moves the moving wedge member 226 upward by rotating the operation lever 240 from the lower release position to the upper fixed position counterclockwise in FIG. 17 by the restoring force of the operation spring 246. The rope fixing mechanism prevents the movement by sandwiching the wire rope 2 from both sides in the radial direction between the fixed rope fixing groove 230 of the fixed wedge member 222 and the moving rope fixing groove 232 of the moving wedge member 226. Operate 214 in a fixed state. Further, the operating mechanism 216 rotates the operating lever 240 clockwise from the upper fixed position to the lower released position in FIG. 17 against the restoring force of the operating spring 246 to move the moving wedge member 226 downward. By moving, the rope fixing mechanism 214 is operated in the released state so as to allow the movement of the wire rope 2 by separating the fixed wedge member 222 and the movable wedge member 226.

  In the holding mechanism 218, as shown in FIGS. 16 and 18, a holding body 250 is attached to the operation shaft 238 in the emergency brake auxiliary space 212, and a holding step portion 252 is provided on the holding body 250. In addition, the holding mechanism 218 is provided with a holding lever 254 that is engaged and released at one end side with the holding step portion 252 of the holding body 250. The holding lever 254 is pivotally supported by a lever shaft 256 parallel to an axis C fixed to the other-side emergency brake case 206 and the emergency brake cover 210 in the emergency brake auxiliary space 212 so as to be swingable. An engagement end portion 258 that is engaged with and released from the holding step portion 252 of the holding body 250 is provided on the side, and the engagement end portion is struck by a speed detection governor 270 of a speed determination mechanism 220 described later on the other end side. A striking end 260 for releasing 258 from the holding step 252 is provided.

  A holding spring 262 is attached to the lever shaft 256 by being twisted and compressed. The holding spring 262 rotates the holding lever 254 clockwise in FIG. 18 and urges the holding lever 254 to rotate so that the engagement end portion 258 engages with the holding step portion 252 of the holding body 250.

  Accordingly, the holding mechanism 218 engages the holding end portion 258 with the holding step portion 252, thereby preventing the operation lever 216 of the operation mechanism 216 from moving from the release position to the fixed position, and the rope fixing mechanism 214. Is held in the released state, and the engagement end portion 258 is released from the holding step 252 to release the blocking of the operation lever 240 of the operation mechanism 216 from the release position to the fixed position, and the rope fixing mechanism 214 is Operate in a fixed state.

  The speed determination mechanism 220 is provided on the other-side emergency brake case 206 with a bearing 264 supporting a speed detection shaft 266 oriented in the horizontal direction parallel to the axis C. The speed detection shaft 266 has one side in the longitudinal direction positioned in the emergency brake space 208 and the other side in the longitudinal direction positioned in the emergency brake auxiliary space 212.

  A single speed detection roller 268 is attached to the speed detection shaft 266 so as to be positioned in the emergency brake space 208 on one side in the longitudinal direction. As shown in FIG. 1, the speed detection roller 268 moves up and down a second set winding angle θ2 (for example, about 270 degrees) from the start of winding on one side in the radial direction in the radial direction of the rope holding groove 16 provided in the sheave 14. It is pressed against the wire rope 2 held on the upper side in the direction.

  A speed detection governor 270 is attached to the speed detection shaft 266 so as to be positioned in the emergency brake auxiliary space 212 on the other side in the longitudinal direction. The speed detection governor 270 communicated with the speed detection roller 268 has a boss portion 274 of a disc-shaped governor substrate 272 attached to the end of the speed detection shaft 266 as shown in FIGS. A base end side of a pair of substantially semicircular weights 276 is pivotally supported by a rotation pin 278 at a symmetrical position in the radial direction so as to be able to expand and contract with respect to the rotation center of the governor substrate 272. The expansion range of the pair of weights 276 is restricted by the size of the restriction hole 282 of each weight 276 with which the restriction pin 280 attached to the governor substrate 272 is engaged.

  The pair of weights 276 are urged in a direction to be contracted by a pair of governor springs 284. The pair of governor springs 284 are respectively hooked at one end side in the middle of the fixed shaft 286 erected at the rotation center of the governor substrate 272, and the other end sides are inserted into spring holes 288 formed in the pair of weights 276, respectively. And is fixed to the fixing pin 290.

  The pair of governor springs 284, at a rotational speed at which the moving speed of the wire rope 2 is less than the set value, causes the pair of weights 276 to contract against the centrifugal force so that the tip 292 of the weight 276 is brought into contact with the holding lever 254. The state where the engagement end portion 258 is engaged with the holding step portion 252 of the holding body 250 is continued from the hitting end portion 260. On the other hand, the pair of governor springs 284 allows the distal end portion 292 of the weight 276 to be held by the holding lever 254 at a rotational speed at which the moving speed of the wire rope 2 is equal to or higher than a set value. The striking end 260 is struck and the engaging end 258 is released from the holding step 252 of the holding body 250.

  Thereby, when the moving speed of the wire rope 2 is less than the set value, the speed determination mechanism 220 keeps the rope fixing mechanism 214 in the released state by continuing the blocking of the operation mechanism 216 by the holding mechanism 218, and the wire When the moving speed of the rope 2 becomes equal to or higher than the set value, the operation mechanism 216 is prevented from being blocked by the holding mechanism 218 and the rope fixing mechanism 214 is operated in a fixed state.

  Further, as shown in FIG. 21, the speed detection governor 270 is provided with an interlocking mechanism 294 for a pair of weights 276. The interlocking mechanism 294 is provided at the tip of a fixed shaft 286 erected at the rotation center of the governor substrate 272 so that the center of the link plate 296 is rotatably supported, and an elongated hole 298 is formed in the vicinity of both ends in the longitudinal direction of the link plate 296. The link pins 300 respectively attached to the pair of weights 276 are slidably engaged with the long holes 298.

  As shown in FIG. 21A, in the interlock mechanism 294, when one weight 276 is contracted, the contraction operation of the one weight 276 is transmitted to one end side of the link plate 296 by the link pin 300. The other end of 296 is rotated about the fixed shaft 286 in the same direction as the one end. By this rotation, the link plate 296 rotates the other weight 276 in the same direction as the one weight 276 via the link pin 300, thereby performing a contraction operation. Similarly, in the interlock mechanism 294, when one weight 276 expands as shown in FIG. 21B, the expansion operation of the one weight 276 is performed via the link pin 300 and the link plate 296. 276 is transmitted to the link pin 300, and the other weight 276 is rotated in the same direction as the one weight 276 to be expanded.

  In this way, the interlocking mechanism 294 interlocks the expansion / contraction operation of one weight 276 with the expansion / contraction operation of the other weight 276.

  Next, the operation of this embodiment will be described.

  The rope pulling device 4 takes out the wire rope 2 introduced from the rope inlet 28 in the upper portion of the pulling device case 6 around the rope holding groove 16 of the sheave 14 for about three quarters, and then takes out the lower portion of the pulling device case 6. Is led out to the outside from the rope outlet 30. The wire rope 2 held on the upper side of the rope holding groove 16 is pressed against the rope holding groove 16 by the two pressing rollers 42 and 44 of the pressing mechanism 36.

  The rope traction device 4 connects the motor shaft 52 of the motor 48 provided on one side in the axis C direction of the traction device case 6 to the reduction device shaft 56 of the reduction device 50 via the input shaft 54, and is an output member of the reduction device 50. A certain flange member 76 is connected to the sheave 14, and a brake device 86 including first and second brake mechanisms 154 and 156 and a one-way clutch mechanism 126 is provided.

  The brake device 86 operates the first brake mechanism 154 for lowering control and the second brake mechanism 156 for lowering stop by the one-way clutch mechanism 126 so that the brake is applied only when the brake is lowered and stopped without being braked. In addition, the brake releasing function of the input shaft side connecting body 88 and the motor shaft side connecting body 102 is shared, and the input shaft 54 is configured compactly on one axis.

  The driving force of the motor 48 is such that the engaging pin 114 of the motor shaft side connection body 102 slidably engaged with the oval hole 98 of the input shaft side connection body 88 is slidably engaged with the oval hole 98 during upward rotation. In the meantime, it is brought into contact with the end portion without being provided with play and is connected to the input shaft 54 and transmitted to the speed reducer 50. As a result, the rope pulling device 4 pulls the wire rope 2 by the sheave 14 and unwinds it downward, and ascends along the wire rope 2.

  On the other hand, the driving force of the motor 48 is such that the engaging pin 114 of the motor shaft side connecting body 102 moves the free angle in the oblong hole 98 of the input shaft side connecting body 88 during the downward rotation, and the motor shaft side connecting body 102 is driven. The abutment body 112 comes into contact with the inclined surface 100 of the input shaft side connection body 88 to move the brake pressing body 132 in the direction in which the second brake spring 152 is compressed, and the second brake mechanism 156 is released. The engaging pin 114 of the motor shaft side connecting body 102 is transmitted to the input shaft 54 without being provided with play between the oblong hole 98 and transmitted to the input shaft 54, and is transmitted to the speed reducer 50. As a result, the rope pulling device 4 pulls the wire rope 2 by the sheave 14 and unwinds it upward, and descends along the wire rope 2.

  In the rope traction device 4, when the motor 48 is rotated upward, the rotation of the input shaft 54 is separated from the brake lining 120 by the one-way clutch mechanism 126 of the brake device 86, so that the brake disk 118 rotates together with the sheave 14. 54 only transmits the rotation of the motor 48 to the speed reducer 50, and the sheave 14 is not braked.

  Further, when the motor 48 is rotated downward, the rope traction device 4 is coupled to the input shaft 54 and the brake lining 120 by the one-way clutch mechanism 126 of the brake device 86 and rotates integrally. The rotation ratio and direction of the are different, and the sheave 14 is braked.

  Since the rope traction device 4 has a structure in which the brake lining 120 is pressed by the three first brake presigs 150 of the first brake mechanism 152 to generate a braking force for controlling overspeed when the rope pulling device 4 is lowered. The force that presses the brake lining can be made smaller than that of the brake device, so that heat generation can be suppressed, and failure due to grease alteration or the like can be prevented.

  In the rope pulling device 4, when the rotational speed of the input shaft 54 on the load side becomes faster than the rotational speed of the motor 48 on the driving side when the rope pulling device 4 is lowered, the inclined surface 100 of the input shaft side connecting body 88 is connected to the driving motor 48. Since the front end of the contact body 112 of the motor shaft side connecting body 102 does not contact the inclined surface 100, the brake pressing body 132 is moved by the second brake spring 152 and the brake is moved. Since the lining 120 is pressed, the braking force can be increased and the descending speed can be controlled.

  The rope traction device 4 has a structure in which when rotating, the rotation direction of the brake disk 118 provided on the sheave 14 side and the rotation direction of the brake lining 120 provided on the brake pressing body 132 side are opposite to each other. In this case, the braking force can be increased to shorten the braking distance.

  When the rope traction device 4 is stopped, the motor shaft 52 becomes free, so that the motor shaft side connecting body 102 contacts the tip of the contact body 112 with the deepest portion of the inclined surface 100 of the input shaft side connecting body 88. Since the brake pressing body 132 is pushed by the second brake spring 152 and the second brake mechanism 156 automatically operates, the braking force by the second brake mechanism 156 is applied to the braking force of the first brake mechanism 154. It can be increased by adding.

  When the rope pulling device 4 is stopped, when the brake release handle 190 of the brake release mechanism 158 is operated, the brake release knob 164 rotates and the contact body 188 provided on the knob cover 174 on the shallowest side of the inclined surface 170 is moved. Since the brake release knob 164 moves to one side in the axis C direction and moves the input shaft 54 to one side in the axis C direction via the bearing 162, the input shaft side connector 88 and the motor shaft side connection The brake pressing body 132 can be moved to one side in the axis C direction via the body 102, and the second brake mechanism 156 can be released. In addition, since the 1st brake mechanism 154 is always acting, the overspeed at the time of the fall by the load of the sheave 14 can be prevented.

  Even when the power of the motor 48 is cut off due to a power failure or the like, the rope traction device 4 is manually input by attaching a manual handle 196 to the manual handle connecting portion 194 provided at the other end of the input shaft 54 in the axis C direction. The shaft 54 can be rotated, and the ascending / descending operation can be performed manually.

  In this rope traction device 4, the wire rope 2 introduced into the inside from the rope inlet 28 at the upper portion of the traction device case 6 is wound around the rope holding groove 16 of the sheave 14 for about three quarters, and then taken out. As a pressing mechanism 36 that pushes the wire rope 2 clamped on the upper side in the radial direction of the rope clamping groove 16 of the sheave 14 toward the rope clamping groove 16 side, Two pressing rollers 42 and 44 are pivotally supported on two swing plates 38 and 40 at an interval L according to the pitch between the ridges and valleys of the wires in the longitudinal direction of the combined wire ropes 2, and two pressing rollers Two rocking plates 38 and 40 that pivotally support 42 and 44 are supported by a rocking shaft 46 so as to be rockable.

  As a result, the rope pulling device 4 can always come into contact with the wire rope 2 by swinging the two pressing rollers 42 and 44 in accordance with the pitch between the peaks and valleys in the longitudinal direction of the wire rope 2. Therefore, it is possible to prevent slipping due to the lifting of the wire rope 2 with a simple structure, and it is possible to press the wire rope 2 into the rope holding groove 16 with a small force utilizing the repulsive force of the wire rope 2, Therefore, the bending of the wire at the portion where the two pressing rollers 423 and 44 and the wire rope 2 are in contact with each other can be reduced to reduce the breakage of the wire, and the life of the wire rope 2 can be extended.

  The rope traction device 4 inputs a motor shaft 52 of a motor 48 provided on one side in the axis C direction of the traction device case 6 and a speed reducer shaft 56 of a reduction gear 50 provided on the other side in the axis C direction of the traction device case 6. A brake device 86 that communicates with the shaft 54 and arranges the motor shaft 52, the input shaft 54, and the speed reducer shaft 56 on the axis C and brakes the rotation of the sheave 14 between the sheave 14 and the input shaft 54. A first brake mechanism 154 that brakes the rotation of the sheave 14 when the motor 48 is rotated downward, and a second brake mechanism 156 that cooperates with the first brake mechanism 154 when the rotation of the motor 48 stops and brakes the rotation of the sheave 14. And a one-way clutch mechanism 126 that separates the first brake mechanism 154 and the second brake mechanism 156 from the input shaft 54 when the motor 48 is rotated upward.

  As a result, the rope traction device 4 has the first brake mechanism 154 for lowering control and the second brake mechanism 156 for lowering stop arranged on the same axis C together with the motor 48, the sheave 14, and the speed reducer 50. Therefore, when the vehicle is lowered, only the first brake mechanism 154 is used for braking, so that the heat generation of the first brake mechanism 154 can be suppressed, and the brake lining 120 is braked via the brake disk 118. By pressing against the flange 22, heat can be released from the sheave 14 to the wire rope 2, and failure due to grease alteration or the like can be prevented.

  The brake device 86 releases the brake to the input shaft 54 that penetrates the speed reducer shaft 56 of the speed reducer 50 and protrudes to the other side in the axis C direction as a brake release mechanism 158 that can release the braking operation when the rotation of the motor 48 is stopped. A knob 164 is provided, an inclined surface 170 is provided on the brake release knob 164, and an abutment body 188 is provided to contact the inclined surface 170 to move the brake release knob 170 to one side in the axial direction. A brake release handle 190 capable of rotating the brake release knob 164 in the circumferential direction so as to release the braking operation of the second brake mechanism 156 by moving the input shaft 54 to one side in the direction of the axis C via the release knob 164 is provided. Yes.

  As a result, when the power to the motor 48 is interrupted during a power failure or the like, the rope traction device 4 moves the brake pressing body 132 to one side in the axis C direction via the input shaft 54 by operating the brake release handle 190. It can be moved and released by releasing the braking operation by the second brake spring 152 of the second brake mechanism 156.

  In addition, the brake device 86 is an input that protrudes to the other side in the axis C direction through the speed reducer shaft 56 of the speed reducer 50 as a manual drive mechanism 192 that can manually rotate the sheave 14 when the rotation of the motor 48 is stopped. A manual handle connecting portion 194 is provided at the shaft end of the shaft 54 and is detachably attached to the manual handle connecting portion 194 so that the sheave 14 is rotated via the speed reducer 50 by the speed reducer shaft 56 connected to the input shaft 54. A manual handle 196 capable of rotating the input shaft 54 is provided.

  As a result, the rope traction device 4 can be raised or lowered by rotating the manual handle 196 when power to the motor 48 is interrupted during a power failure or the like.

  The rope traction device 4 is an emergency brake device 200 that brakes the movement of the wire rope 2 when the moving speed of the wire rope 2 exceeds the set value on the upper portion of the traction device case 6. A rope fixing mechanism 214 is provided for holding the wire rope 2 from both sides in the radial direction so as to prevent the movement and releasing the wire rope 2 so as to allow the movement of the wire rope 2. The rope fixing mechanism 214 is operated between a fixed state and a released state. An operation mechanism 216 is provided, the operation of the operation mechanism 216 is blocked to hold the rope fixing mechanism 214 in the released state, and the operation mechanism 216 is released from the operation blocking and the rope fixing mechanism 214 is operated to the fixed state. 218 is provided, and when the moving speed of the wire rope 2 is less than the set value, the operating mechanism by the holding mechanism 218 When the movement speed of the wire rope 2 exceeds the set value, the movement prevention of the operation mechanism 216 by the holding mechanism 218 is released and the rope fixing mechanism 214 is released. A speed determination mechanism 220 that operates in a fixed state is provided.

  Thereby, when the moving speed of the wire rope 2 becomes equal to or higher than the set value, the rope pulling device 4 is fixed and stopped by the rope fixing mechanism 214 so as to prevent the movement by sandwiching the wire rope 2 from both sides in the radial direction. Can do.

  The rope fixing mechanism 214 is provided with a fixed-side wedge member 222 on one side in the radial direction of the wire rope 2, and a moving-side wedge member 226 that can be moved in the vertical direction by the operating mechanism 216 on the other radial side of the wire rope 2. A wedge receiving member 228 is provided on the opposite side of the fixed wedge member 222 with respect to the movable wedge member 226, and the fixed rope fixing groove 230 and the movable rope fixed to the fixed wedge member 222 and the movable wedge member 226, respectively. A groove 232 is provided, and a moving side inclined surface 234 and a wedge receiving side are inclined so that the upper side of the moving side wedge member 226 and the wedge receiving member 228 are opposed to the fixed side wedge member 222 on the upper side. An inclined surface 236 is provided.

  As a result, in the rope pulling device 4, the moving side wedge member 226 moves in the vertical direction with respect to the wire rope 2, and moves with the fixed side rope fixing groove 230 of the fixed side wedge member 222 with respect to the wire rope 2. Since the moving-side wedge member 226 of the side rope fixing groove 232 is opposed in parallel, pressure can be applied uniformly, damage to the wire rope 2 can be reduced, and the emergency brake device 200 is activated. When the motor 48 is rotated upward from the state in which the wire rope 2 is fixed, the moving-side wedge member 226 moves downward to release the wire rope 2, so that the wire rope 2 is not hindered. The rope 2 can be fixed, and further, when the emergency brake device 200 is operated and the wire rope 2 is fixed, the motor 48 is rotated downward. When Yaropu 2 is extended in the pulling apparatus case 6, since the wire rope 2 from slipping lifted from the rope holding grooves 16, the wire rope 2 is never buckled.

  The speed determination mechanism 220 is provided with a speed detection roller 268 that is pressed against the wire rope 2 that is clamped on the upper side in the radial direction of the rope clamping groove 16 of the sheave 14, and a speed detection governor that is in contact with the speed detection roller 268. 270 is provided with a pair of weights 276 that can be expanded and contracted with respect to the center of rotation. At a rotational speed at which the moving speed of the wire rope 2 is less than a set value, the pair of weights 276 are contracted and operated by the holding mechanism 218. While the mechanism 216 is energized so as to continue to prevent the operation, the pair of weights 276 are allowed to expand at a rotation speed at which the moving speed of the wire rope 2 is equal to or higher than a set value, and the operation mechanism 216 is operated by the holding mechanism 218. A pair of governor springs 284 are provided to release the operation prevention.

  As a result, the rope pulling device 4 detects the speed by transmitting the moving speed of the wire rope 2 to the speed detecting governor 270 by the speed detecting roller 268, and at the rotational speed at which the moving speed of the wire rope 2 is equal to or higher than the set value. The rope fixing mechanism 214 can fix the wire rope 2 from both sides in the radial direction through the holding mechanism 218 and the operation mechanism 216 so as to prevent the movement and stop the rope. The rope holding groove 16 of the sheave 14 can also be stopped. When a load is applied to the wire rope 2 wrapped around the wire rope 2, the speed detection roller 268 is pressed against the wire rope 2 by using a phenomenon of lifting from the rope holding groove 16 as the tension of the wire rope 2 decreases. The speed detection roller 268 can be rotated in accordance with the movement of the rope 2, and the conventional wire rope Nde a pair of rollers, the other roller on one of the rollers in comparison to the structure to prevent slipping against a spring, can be achieved and reduction and miniaturization of parts.

  The speed detection governor 270 is provided with an interlocking mechanism 294 that interlocks the expansion / contraction operation of one weight 276 with the expansion / contraction operation of the other weight 276.

  As a result, the rope traction device 4 has a structure in which the speed detection governor 270 that rotates about the speed detection shaft 266 oriented in the horizontal direction expands and contracts the pair of weights 276 by centrifugal force. Since the gravity always acts on the H. 284, the problem is that the weight 276 and the lower weight 276 are not uniformly expanded / contracted when positioned above the pair of weights 276. By interlocking the weight 276 located on the lower side and the weight 276 located on the lower side by the interlocking mechanism 294, it is possible to uniformly expand and contract, and to stabilize the operation.

  The rope traction device according to the present invention stops the movement by sandwiching the wire rope when the moving speed of the wire rope exceeds a set value by the emergency brake device, and is used for transporting construction cargo such as a gondola and an elevator. It can be applied to lifting machines.

2 wire rope 4 rope pulling device 6 pulling device case 14 sheave 16 rope holding groove 22 brake flange 28 rope inlet 30 rope outlet 36 pressing mechanism 38/40 swing plate 42/44 pressing roller 46 swing shaft 48 motor 50 speed reducer 52 Motor shaft 54 Input shaft 56 Reducer shaft 86 Brake device 88 Input shaft side connection body 102 Motor shaft side connection body 116 Brake bolt 118 Brake disk 120 Brake lining 126 One-way clutch mechanism 132 Brake pressing body 150 First brake spring 152 Second brake spring 154 First brake mechanism 156 Second brake mechanism 158 Brake release mechanism 192 Manual drive mechanism 200 Emergency brake device 214 Rope fixing mechanism 216 Operation mechanism 218 Holding machine 220 rate determination mechanism

Claims (2)

In the rope pulling device that moves along the wire rope by winding the wire rope suspended vertically in the sheave and rotating the sheave to pull the wound wire rope, this rope pulling device The sheave is rotatably supported around an axis that is oriented horizontally, and a rope holding groove for holding the wire rope is integrally provided on the outer periphery of the sheave. The wire rope introduced into the inside from the upper rope entrance is wound from the horizontal side in the radial direction of the rope holding groove to the upper side through the lower side in the vertical direction, and the wire rope is moved to the upper side. After extending from the upper side of the rope holding groove in the radial direction to the substantially horizontal direction and taken out from the rope holding groove, the lower side An emergency brake device is provided that is bent and led out from the rope outlet at the lower part of the traction device case, and brakes the movement of the wire rope when the movement speed of the wire rope exceeds a set value at the upper part of the traction device case. The emergency brake device is provided with a rope fixing mechanism for fixing the wire rope from both sides in the radial direction so as to prevent the movement and releasing the wire rope to allow the movement of the wire rope inside the emergency brake case. An operation mechanism for operating the rope fixing mechanism between a fixed state and a released state is provided, the operation of the operation mechanism is blocked, the rope fixing mechanism is held in the released state, and the operation blocking of the operation mechanism is released. When a holding mechanism for operating the rope fixing mechanism in a fixed state is provided, and the moving speed of the wire rope is less than a set value Continues to prevent the operation mechanism from being operated by the holding mechanism to hold the rope fixing mechanism in a released state, and cancels the operation mechanism from being operated by the holding mechanism when the moving speed of the wire rope exceeds a set value. And providing a speed determination mechanism for operating the rope fixing mechanism in a fixed state ,
The speed determination mechanism includes a speed detection roller that is pressed against the wire rope that is clamped on the upper side in the up-down direction in the radial direction of the rope clamping groove provided on the sheave, and the speed detection roller is a speed parallel to the axis of the sheave. The speed detection governor is provided with a pair of weights that can be expanded and contracted with respect to the center of rotation, and the rotational speed at which the moving speed of the wire rope is less than a set value is provided. While the pair of weights is contracted and energized so as to continue the blocking of the operation mechanism by the holding mechanism, the pair of weights are expanded at a rotational speed at which the moving speed of the wire rope is equal to or higher than a set value. A pair of governor springs that allow opening and release of the operation mechanism of the operation mechanism by the holding mechanism are provided, and the pair of governor springs rotate the speed detection governor. Sealed multiplied respectively one end to a fixed shaft provided upright in mind, seals hanging on the pair of the weight to extend the other end in each radially symmetrical directions,
The speed detection governor is provided with an interlocking mechanism that interlocks the expansion / contraction operation of one weight with the expansion / contraction operation of the other weight, and the interlocking mechanism is located at the rotation center of the speed detection governor. The center of the link plate is rotatably supported on the fixed shaft that is erected, and long holes are formed in the vicinity of both ends in the longitudinal direction of the link plate, and the long holes are respectively attached to the pair of weights. A rope traction device characterized in that a pin is slidably engaged . The rope fixing mechanism is provided on the emergency brake case with a fixed wedge member positioned on one side of the wire rope in the radial direction, and the radial direction of the wire rope is opposed to the fixed wedge member. The moving side wedge member is disposed on the other side so as to be movable in the vertical direction by the operating mechanism, and the wedge receiving member is positioned on the opposite side of the fixed side wedge member with respect to the moving side wedge member. A fixed side rope fixing groove and a moving side rope fixing groove are provided on the opposite sides of the fixed side wedge member and the moving side wedge member, respectively, and the moving side wedge member and the wedge receiving member are provided. The moving side inclined surface and the wedge receiving side inclined so that the moving side wedge member moves parallel to the vertical direction with respect to the wire rope, the upper side is closer to the fixed side wedge member than the lower side And features a separate surface Rope traction device according to claim 1 that.

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