JP2016008125A - Rope guide mechanism and rope hoist - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rope guide mechanism and a rope hoist for which a slide member can be used in common.SOLUTION: A rope guide mechanism 34 prevents a wire rope W from being irregularly wound around a rope drum of the rope hoist. The rope guide mechanism 34 includes: a first slide member 36 with which a projection 361 is formed at an inner peripheral side and which includes a one-end connection part 364a and another-end connection part 364b at one end side and another end side in a circumferential direction, respectively; and a second slide member 36 which has the same shape as the first slide member 36 and is connected with the first slide member 36 to form a ring-shaped ring member 35. In a first fixture portion F1 where the one-end connection part 364a and the other-end connection part 364b are coupled by coupling means, both the connection parts are fixed while interposing a spacer 37 which has a width for one pitch of the projection 361, therebetween and in a second fixture portion F2 at an opposite side in the circumferential direction, both the connection parts are fixed directly.

Description

  The present invention relates to a rope hoist rope guide mechanism and a rope hoist used for unloading work.

  A rope hoist is generally used to move the load in the vertical direction and move the suspended load along a rail installed on the ceiling side. Such a rope hoist includes a rope drum around which a rope is wound, and the rope drum is rotated by a drum motor.

  The wire rope wound around the rope drum is pressed against the rope groove of the rope drum by a rope guide mechanism as shown in Patent Documents 1 and 2, for example. Thereby, the wire rope is prevented from being detached from the rope groove when the wire rope is obliquely pulled with respect to the rope drum. Further, when the wire rope is wound around the loam drum, it is possible to prevent the groove jumping such that the wire rope is wound around the rope groove that is not the rope groove that should be wound originally. Furthermore, multiple winding is prevented such that the wire rope is wound around the rope groove around which the wire rope has already been wound.

Japanese Patent No. 5424916 U.S. Pat. No. 7,374,126

  By the way, in the configuration disclosed in Patent Document 1, the rope guide mechanism is configured to cover only a part of the rope drum without covering the entire circumference. For this reason, for example, the above-described groove jump may occur due to an external action such as application of a large vibration.

  In order to prevent such groove jumping, it is preferable that the rope guide mechanism is configured to cover the entire circumference of the rope drum as disclosed in Patent Document 2. Here, in the configuration disclosed in Patent Document 2, the ring-shaped portion that covers the rope drum is configured by two sliding members. However, although these two sliding members are generally similar, they are not the same member but different. That is, a rope groove is formed on the inner peripheral side of each sliding member, but the portion of the rope groove does not have the same shape. For this reason, separate molds are required to produce each sliding member.

  The present invention has been made based on the above circumstances, and an object of the present invention is to provide a rope guide mechanism and a rope hoist capable of sharing a sliding member.

  In order to solve the above problems, according to a first aspect of the present invention, there is provided a rope guide mechanism for preventing a wire rope wound around a rope drum of a rope hoist from being randomly wound into a rope groove of the rope drum. A first sliding member having a protrusion formed on the inner peripheral side and provided with one end connecting portion and the other end connecting portion on one end side and the other end side in the circumferential direction; A second sliding member having the same shape and connected to the first sliding member to form a ring-shaped ring member, one end connecting portion of the first sliding member and the other end of the second sliding member The connecting portion is connected by the connecting means, the other end connecting portion of the first sliding member and the one end connecting portion of the second sliding member are connected by the connecting means, and the protrusion of the first sliding member and the second sliding member The ridges are at least one round in the circumferential direction of the rope drum. Are connected so as to screwed to one round of the flop grooves, the rope guide mechanism is provided, characterized in that.

  According to another aspect of the present invention, in the above-described invention, a portion where the one end connecting portion of the first sliding member and the other end connecting portion of the second sliding member are coupled by the coupling means is the first fixing portion. In this case, the first fixing portion is fixed in a state where a spacer having a width corresponding to the integral pitch of the protrusion is interposed between the one end connection portion of the first sliding member and the other end connection portion of the second sliding member. In the case where the second fixing portion is a portion where the other end connecting portion of the first sliding member and the one end connecting portion of the second connecting portion are connected by the connecting means, the second fixing portion It is fixed in a state where the other end connection portion and the one end connection portion of the second connection portion are in direct contact with each other, or fixed in a state where a spacer having a width corresponding to an integer pitch different from that of the first fixing portion is interposed. Is preferred.

  According to another aspect of the present invention, in the above-described invention, the spacer located at the first fixing portion has a width corresponding to one pitch of the protrusion, and the second fixing portion has the first sliding member. It is preferable that the other end connection portion and the one end connection portion of the second connection portion are fixed in direct contact with each other.

  Furthermore, in another aspect of the present invention, in the above-described invention, the first sliding member and the second sliding member include a narrow portion and a wide one end located on one end side in the circumferential direction of the narrow portion. And the other end wide portion located on the other end side in the circumferential direction of the narrow portion, and the one end wide portion and the other end wide portion are directed to one side in the width direction of the narrow portion. The one end connecting portion and the other end connecting portion protrude from the one end wide portion and the other end wide portion toward the one end side and the other end side in the circumferential direction, respectively. A guide member is attached between one end wide portion and the other end wide portion of any of the members, and the guide member is connected to the first sliding member or the second sliding member; An arcuate portion facing the narrow portion with a gap larger than the diameter of the wire rope. Furthermore the guide member, hook-shaped engaging portion which slides with respect to the guide shaft for guiding the sliding of the ring member along the rope drum is provided, it is preferable.

  Further, according to another aspect of the present invention, in the above-described invention, a wire rope entering a rope groove in a portion adjacent to the ridge in the axial direction of the ring member in the one end wide portion and the other end wide portion, An opposing guide portion is provided to prevent the wire rope from being rolled up in opposition, and the wire is opposed to the wire rope entering the rope groove at a portion on the inner peripheral side of the connecting portion. It is preferable that an extended guide portion that is continuous with the opposing guide portion is provided while preventing the rope from being rolled up randomly.

  Furthermore, in another aspect of the present invention, in the above-described invention, the narrow portion of the other of the first sliding member and the second sliding member has a wire rope that enters the rope groove. A pressing roller body having a roller to be contacted is attached via an attachment shaft, and the pressing roller body includes an urging means for applying an urging force to the roller so that the wire rope entering the rope groove is not disturbed. It is preferable that either one of the first sliding member and the second sliding member to which the roller body is attached is located on the side where the wire rope is wound around the rope drum than either one. .

  Further, another aspect of the present invention is preferably a rope hoist using the rope guide mechanism according to each of the above-described inventions.

  According to the present invention, the sliding member can be shared in the rope guide mechanism and the rope hoist.

It is a perspective view showing the whole rope hoist composition when it sees from the front side concerning one embodiment of the present invention. It is a perspective view which shows the whole structure when the rope hoist of FIG. 1 is seen from the back side. It is a top view which shows a structure when the rope hoist of FIG. 1 is seen from the upper side. It is a bottom view which shows a structure when the rope hoist of FIG. 1 is seen from the lower side. It is a front view which shows a structure when the rope hoist of FIG. 1 is seen from the front side. It is a rear view which shows a structure when the rope hoist of FIG. 1 is seen from the rear side. It is a top view which shows the structure of the trolley mechanism and frame structure in the rope hoist of FIG. It is a side view which shows the structure of the rope drum in the rope hoist of FIG. 1, and has shown the rope drum vicinity and the drum motor vicinity in the cross section. It is a partial side view of the rope drum for showing the rope guide mechanism vicinity in the rope hoist of FIG. It is a rear view which shows the structure of a rope guide mechanism while showing the cross section of the rope drum in the rope hoist of FIG. It is a perspective view which shows the structure of the rope guide mechanism in the rope hoist of FIG. It is a disassembled perspective view which shows the structure of the rope guide mechanism of FIG. It is a perspective view which shows the two sliding members which comprise the ring member in the rope guide mechanism of FIG. It is sectional drawing which shows the structure of the site | part vicinity where the two sliding members in the rope guide mechanism of FIG. 11 are connected. It is a fragmentary sectional view which shows the state which looked at the intermediate sheave body in the rope hoist of FIG. 1 from the side surface. It is front sectional drawing which shows the structure of the intermediate sheave body in the rope hoist of FIG. It is a side view which shows the structure of the rope fixing member in the rope hoist of FIG. It is a disassembled perspective view which shows the structure of the rope fixing member in the rope hoist of FIG. It is a side view which shows the structure of the hook block in the rope hoist of FIG. It is side surface sectional drawing which shows the structure of the hook block in the rope hoist of FIG. It is a perspective view which shows the internal structure of the braking resistor in the rope hoist of FIG. It is a top view which shows a mode that the braking resistor in the rope hoist of FIG. 1 protrudes in the space.

  Hereinafter, the rope hoist 10 which concerns on one embodiment of this invention is demonstrated based on drawing. In the following description, an XYZ orthogonal coordinate system will be used as necessary. In the XYZ Cartesian coordinate system, the X direction indicates the direction in which the rail extends, the X1 side indicates the side where the drum motor 32 and the traversing motor 42 are located in the longitudinal direction of the rope hoist 10, and the X2 side indicates that Indicates the opposite side. The Z direction refers to the vertical direction, the Z1 side refers to the upper side (that is, the side on which the rail R is located as viewed from the hook block 70), and the Z2 side refers to the lower side opposite thereto. Further, the Y direction refers to the direction orthogonal to the X direction and the Z direction (the width direction of the rail R), the Y1 side refers to the side where the trolley mechanism 40 is located when viewed from the rope drum mechanism 30, and the Y2 side refers to It points to the opposite side.

<1. About Overall Configuration of Rope Hoist 10>
FIG. 1 is a perspective view showing an overall configuration of a rope hoist 10 when viewed from the front side. FIG. 2 is a perspective view showing the overall configuration of the rope hoist 10 when viewed from the back side. FIG. 3 is a plan view showing the configuration of the rope hoist 10 when viewed from above. FIG. 4 is a bottom view showing the configuration of the rope hoist 10 when viewed from below. FIG. 5 is a front view showing the configuration of the rope hoist 10 when viewed from the front side. FIG. 6 is a rear view showing the configuration of the rope hoist 10 when viewed from the rear side.

  As shown in FIGS. 1 to 6, the rope hoist 10 includes a frame structure 20, a rope drum mechanism 30, a trolley mechanism 40, an intermediate sheave body 50, a rope fixing member 60, a hook block 70, and a counterweight. 80, a control unit 90, and a braking resistor 100.

<2. About frame structure 20>
First, the frame structure 20 will be described. FIG. 7 is a plan view showing configurations of the frame structure 20 and the trolley mechanism 40. As shown in FIG. 7, the frame structure 20 includes a pair of front and rear frames 21, a connecting bar 24, a drum support frame 29, and a mounting frame 271, and the entire rope hoist 10 is supported by these. The

  The front and rear frames 21 are frames that extend with the extension direction (X direction) of the rail R as a longitudinal direction, and are provided on the left and right sides (Y1 side and Y2 side) with the rail R in between. Each of the pair of front and rear frames 21 includes two support frames 22 and a connecting frame 23 that connects these support frames 22. Various members such as wheels 41 are attached to the support frame 22. The support frame 22 is provided with an insertion hole 22a, and a mount member 25 described later is inserted into the insertion hole 22a.

  A connection frame 23 is connected to the support frame 22 by, for example, a bolt or the like. In the configuration shown in FIGS. 1 to 6, the connecting frame 23 is located between two support frames 22 along the extending direction (X direction) of the rail R. In addition, the connection frame 23 is located on the rail R side, thereby effectively utilizing the space located between the front and rear frames 21 opposed in the Y direction.

  The support frame 22 and the connecting frame 23 are provided in a thick plate shape that is not a thin plate so that various members including the wheel 41 can be supported.

  Further, the frame structure 20 has a connecting bar 24. The connection bar 24 is a portion extending along the width direction (Y direction). The connection bar 24 is attached to the support frame 22 by being inserted into the insertion hole 22a described above via a mount member 25 as shown in FIG. Here, the other front / rear frame 21 (corresponding to the drum side frame) of the pair of front / rear frames 21 is fixed to the other end side (Y2 side) of the connecting bar 24. In addition, a front and rear frame 21 (corresponding to the weight side frame) on one side is fixed to the middle portion of the connection bar 24, and a counterweight 80 is fixed to one end side (Y1 side) of the connection bar 24. ing.

  The mount member 25 is fixedly attached to the insertion hole 22a. A fixing means such as a screw can be screwed into the mount member 25, and the position of the support frame 22 with respect to the connecting bar 24 is determined by the screwing. However, in the present embodiment, the drum support frame 29 is inserted into the opening on the other end side (Y2 side) of the mount member 25 located on the other end side (Y2 side) in the width direction. By hitting the drum support frame 29, the positions of the front and rear frames 21 on the other side (Y2 side) with respect to the connecting bar 24 are determined. However, the front and rear frames 21 on one side (Y1 side) can be freely changed with respect to the connecting bar 24 by loosening fastening means such as bolts. Thereby, when the rope hoist 10 is mounted, the front and rear frames 21 on one side (Y1 side) can be separated from the front and rear frames 21 on the other side (Y2 side).

  In the configuration shown in FIG. 7, an intermediate sheave support portion 27 and a terminal support portion 28 are attached to the frame structure 20. The intermediate sheave support portion 27 is a portion that supports a suspension shaft S1 that supports an intermediate sheave body 50 to be described later. In the configuration shown in FIG. 7 and the like, one side of the frame structure 20 in the width direction (Y direction) ( (Y1 side). In order to support the above-described suspension shaft S1, the intermediate sheave support portion 27 has a pair of attachment frames 271 that are separated in the longitudinal direction (X direction). Each is attached to the support frame 22.

  As described above, since the intermediate sheave support portion 27 is arranged on one side (Y1 side) in the width direction (Y direction) of the frame structure 20, the mounting frame 271 is on one side in the width direction (Y direction). It protrudes toward (Y1 side). For this reason, a space SP between the counterweight 80 described later is narrowed by the presence of the mounting frame 271 and the intermediate sheave body 50.

  Moreover, the terminal support part 28 is a part which supports the terminal support shaft S2 which supports the rope fixing member 60 mentioned later, and, in the structure shown in FIG. 7 etc., the other side of the width direction (Y direction) among the frame structures 20. (Y2 side). The terminal support portion 28 has a pair of shaft holding portions 281, and each shaft holding portion 281 is attached to a pair of support frames 22 that are separated in the longitudinal direction (X direction).

  The frame structure 20 is provided with a drum support frame 29 so as to protrude toward the other side (Y2 side) in the width direction (Y direction). A pair of drum support frames 29 are provided, and each drum support frame 29 is attached to a support frame 22 that is spaced apart in the longitudinal direction (X direction). One end side and the other end side of a rope drum mechanism 30 described below are fixed to the pair of drum support frames 29, respectively.

<3. About Overall Configuration of Rope Drum Mechanism 30>
Next, the rope drum mechanism 30 will be described. As shown in FIGS. 1 to 6 and the like, the rope drum mechanism 30 includes a rope drum 31, a drum motor 32, a speed reduction mechanism 33, and a rope guide mechanism 34 as main components.

  FIG. 8 is a side view showing the configuration of the rope drum 31 and shows the vicinity of the rope drum 31 and the vicinity of the drum motor 32 in cross section. As shown in FIG. 8, the rope drum 31 is a drum-shaped member around which the wire rope W is wound. A concave groove-shaped rope groove 311 into which the wire rope W is fitted is formed on the outer peripheral side thereof. . The rope groove 311 is spirally formed on the outer periphery of the rope drum 31 and is formed corresponding to the radius of the wire rope W. The rope grooves 311 are formed so that the wire ropes W are aligned in a state where they do not overlap (in a single state).

  A rope pressing metal fitting 312 for fixing one end side of the wire rope W is attached to the other end side (rear side; X2 side) of the rope drum 31. The rope pressing metal fitting 312 includes a recess 312a for positioning the wire rope W, and the screw 312b as a fastening means is firmly screwed into the rope drum 31 with the wire rope W positioned in the recess 312a. Thereby, one end side of the wire rope W is fixed to the rope drum 31.

  Further, shaft support portions 313 and 314 are attached to one end side (front side; X1 side) and the other end side (rear side; X2 side) of the rope drum 31, respectively. As shown in FIG. 8, a drum rotating shaft 315 is connected to a shaft support portion 313 on one end side (front side; X1 side) by, for example, spline coupling. The drum rotation shaft 315 is attached to a pair of gear housings 316a and 316b via bearings 317a and 317b as bearings. In this embodiment, the gear housings 316a and 316b are formed in different shapes and the bearings 317a and 317b are also of different types, but the gear housings 316a and 316b and the bearings 317a and 317b are shared. You may make it do.

  In addition, a bearing 314b is attached to the annular convex portion 314a on the radial center side of the shaft support portion 314 on the other end side (rear side: X2 side) of the rope drum 31, and the outer peripheral side of the bearing 314b is attached to the outer peripheral side of the bearing 314b. Attached to the frame 318. Thereby, the other end side of the rope drum 31 is also rotatably supported. As shown in FIG. 1 and the like, the rope drum 31 is covered at the upper side by a cover frame 319.

  Further, as shown in FIG. 8, a drum motor 32 is attached to the gear housings 316a and 316b. The drum motor 32 provides a driving force for rotating the rope drum 31. A pinion gear 331 constituting the speed reduction mechanism 33 is attached to the output shaft 321 of the drum motor 32, and the driving force of the pinion gear 331 is transmitted to the drum rotation shaft 315 via the gear wheel train 332. The output shaft 321 is also attached to the gear housings 316a and 316b via bearings 322a and 322b as bearings. Hereinafter, when the gear housings 316a and 316b are collectively described, they are simply referred to as the gear housing 316.

<4. About the rope guide mechanism 34>
FIG. 9 is a partial side view of the rope drum 31 for showing the vicinity of the rope guide mechanism 34. FIG. 10 is a rear view showing a cross section of the rope drum 31 and a configuration of the rope guide mechanism 34. FIG. 11 is a perspective view showing the configuration of the rope guide mechanism 34. FIG. 12 is an exploded perspective view showing the configuration of the rope guide mechanism 34.

  As shown in FIGS. 9 and 10, the rope guide mechanism 34 is a member that moves in the front-rear direction (X direction) while being guided by the guide shaft G as the rope drum 31 rotates. The guide shaft G is supported by, for example, the gear housing 316a and the mounting frame 318 described above, and can satisfactorily guide the sliding of the rope guide mechanism 34. A plurality of guide shafts G such as three are provided. Further, the plurality of guide shafts G are attached to the gear housing 316 a and the attachment frame 318, so that they constitute a drum support structure that supports the rope drum 31.

  As shown in FIGS. 9 to 11, the rope guide mechanism 34 includes a ring member 35, a guide member 38, and a pressing roller body 39 as main components.

  As shown in FIGS. 11 and 12, the ring member 35 is formed in a ring shape by connecting two semicircular sliding members 36. The rope drum mechanism 30 is formed by attaching the guide member 38 to the ring member 35 connecting the two sliding members 36 and further attaching the pressing roller body 39. The sliding member 36 and the guide member 38 are formed by, for example, injection molding using resin as a material. One of the sliding members 36 corresponds to the first sliding member, and the other sliding member 36 corresponds to the second sliding member. However, one of the other sliding members 36 may correspond to the first sliding member, and the remaining one sliding member 36 may correspond to the second sliding member.

  Here, in the present embodiment, the two sliding members 36 are formed in the same shape. That is, the two sliding members 36 are formed using, for example, the same mold.

  On the inner peripheral side of each sliding member 36, a protrusion 361 that fits in the rope groove 311 of the rope drum 31 is provided. The protrusion 361 is provided in a spiral shape. However, in order to prevent interference with the rope drum 31, the protrusion 361 is provided so as to face the non-winding side of the wire rope W on the inner peripheral side of the ring member 35 (sliding member 36). . The protrusion 361 is provided with a tapered portion 361a that is inclined so as to be directed toward the outer diameter side as it proceeds toward the end portion. Due to the presence of the tapered portion 361a, even if there is a slight step between the two protrusions 361, the step can be absorbed and a good fitting state to the rope groove 311 can be realized.

  FIG. 13 is a perspective view showing two sliding members 36 constituting the ring member 35. As shown in FIGS. 11 to 13, wide end portions 362 projecting to the other side (X2 side) in the X direction are provided on both ends in the circumferential direction of the sliding member 36. However, a portion located between the wide portions 362 at both ends in the circumferential direction is a narrow narrow portion 363. A guide member 38 is fixed to the narrow portion 363 of one sliding member 36. Thereby, a guide opening 34 a for guiding the wire rope W is provided between the one sliding member 36 and the guide member 38. The guide opening 34 a is an opening for guiding the wire rope W wound around the rope drum 31 while guiding it to the rope groove 311, and is provided in the shape of a long hole.

  An opposing guide portion 362a is provided in a portion of each wide portion 362 adjacent to the protrusion 361 in the axial direction (X direction). The opposing guide part 362 a faces the wire rope W entering the rope groove 311. Then, the wire rope W is prevented from being vortexed. Here, turbulent winding refers to a state in which the wire rope W is not wound in alignment with the rope groove 311. Further, an extension guide portion 362b is continuously provided in the opposing guide portion 362a. The extension guide portion 362b is a thin wall portion located on the inner peripheral side of the connecting portion 382 of the guide member 38 described later. That is, the thin extension guide part 362b is provided in a shape recessed from the opposite guide part 362a from the outer diameter side in order to position the guide member 38 on the outer diameter side. The extension guide portion 362b faces the wire rope W entering the rope groove 311 in the same manner as the opposing guide portion 362a, and prevents the wire rope W from being vortexed.

  Here, from each wide part 362, the connection part 364 is extended toward the edge part side of the circumferential direction. Below, the connection part 364 extended from the wide part 362 which exists in the circumferential direction one end side among the sliding members 36 is made into the one end connection part 364a, and is extended from the wide part 362 which exists in the other end side of the circumferential direction. The connecting portion 364 to be used is the other end connecting portion 364b. However, when it is not necessary to distinguish the one end connection portion 364a and the other end connection portion 364b, they are simply referred to as the connection portion 364.

  The connecting portion 364 is provided with a smaller dimension in the axial direction (X direction) than the wide portion 362. In the present embodiment, when the two sliding members 36 are placed on the same plane in the axial direction (X direction), there is a protrusion between the one end connecting portion 364a and the other end connecting portion 364b. It is provided so that a gap corresponding to a half pitch exists in the thread pitch of the strip 361.

  As shown in FIG. 11, the guide member 38 is attached to the narrow portion 363 of the sliding member 36 on one side via bolts BT, nuts NT, and the like. The guide member 38 is provided with an arcuate portion 381, a connecting portion 382, and an engaging portion 383. The arc-shaped portion 381 is provided in an arc shape so as to follow the outer periphery of the rope drum 31. In addition, the connecting portion 382 is a portion that is positioned on both ends of the arc-shaped portion 381 and abuts on the narrow portion 363. In order to enable contact with the narrow portion 363, the connecting portion 382 is provided with a larger dimension in the width direction (X direction) than the arc-shaped portion 381.

  Further, the engaging portion 383 is provided in a curved hook shape, and is in contact with the guide shaft G in the concave portion 383a that is the inside of the curved portion. By fitting the guide shaft G into the recess 383a, the rope guide mechanism 34 can be moved favorably in the front-rear direction (X direction).

  By the way, when connecting the two sliding members 36 to each other, the following is performed. That is, as is apparent from FIG. 13, when one round is made along the protrusion 361, the rope drum 31 advances in the axial direction (X direction) by one pitch of the screw pitch. Therefore, there is a difference by a half pitch with respect to the screw pitch between the one end side and the other end side of the sliding member 36. That is, as is clear from FIG. 13, when one sliding member 36 and the other sliding member 36 are placed on the same plane in the axial direction (X direction), the thread and thread valley of the protrusion 361 Are positioned at the same position in the axial direction (X direction).

  However, if two sliding members 36 are to be connected in this state, the thread of one protrusion 361 and the thread valley of the other protrusion 361 are positioned adjacent to each other on the same thread groove. Thus, the rope groove 311 is not fitted.

  Therefore, in the present embodiment, as described above, when the two sliding members 36 are placed on the same plane in the axial direction (X direction), the one end connection portion 364a and the other end connection portion 364b A gap corresponding to a half pitch exists in the thread pitch of the protrusion 361. In addition, the one end connection portion 364a and the other end connection portion 364b are connected as follows.

  FIG. 14 is a cross-sectional view showing a configuration in the vicinity of a portion where two sliding members 36 are connected. As shown in FIG. 14, in the present embodiment, the other end connecting portion 364b of one sliding member 36 and the other end connecting portion 364a are half pitches when they are located on the same plane as described above. They are connected using a coupling means such as a bolt BT or a nut NT in a state in which they are in direct contact so that there is no gap in minutes. This fixing part is referred to as a second fixing part F2.

  Then, in the second fixing portion F2, the thread of one protrusion 361 and the thread of the other protrusion 361 are located adjacent to each other on the same thread groove, and the protrusion 361 is in the rope groove 311. Is in a state of fitting well.

  However, when such a direct contact is made at the second fixed portion F2, the gap corresponding to the half pitch when it is located on the same plane as described above is eliminated. On the other hand, when the two sliding members 36 are not inclined, the one end connecting portion 364a of one sliding member 36 and the other end connecting portion 364b of the other sliding member 36 are on the same plane. In addition to the half pitch in the case of being positioned, there is a 1-pitch gap in which the half-pitch eliminated at the second fixed portion F2 is added.

  For this reason, in the present embodiment, a spacer 37 having a thickness corresponding to one pitch is arranged at the position of the gap corresponding to one pitch. Then, using a coupling means such as a bolt BT or a nut NT, the spacer 37 is interposed between the one end connecting portion 364a of one sliding member 36 and the other end connecting portion 364b of the other sliding member 36. Have fixed them. This fixing part is referred to as a first fixing part F1.

  As described above, when the two sliding members 36 are connected, one sliding member 36 is displaced from the other sliding member 36 by a half pitch of the protrusion 361 in the axial direction (X direction). It will be in the state located in the position. However, in the protrusion 361 between the two sliding members 36, the screw threads and the screw valleys are located on the circumference of the same screw groove. Thereby, the protrusion 361 in between is in a state of being fitted into the rope groove 311 satisfactorily.

  As shown in FIGS. 10 and 11, a pressing roller body 39 is attached to the narrow portion 363 of the other sliding member 36. The pressing roller body 39 has a pair of roller supports 391, a roller 392, a biasing spring 393, and an attachment shaft 394. Then, the wire rope W that has entered the rope groove 311 through the guide opening 34a is pressed by the roller 392, so that the wire rope W is prevented from being vortexed.

  Of the pressing roller body 39, each roller support 391 has a base portion 391a and a pair of opposing wall portions 391b, which are substantially U-shaped. However, one of the pair of roller supports 391 is provided wider than the other of the roller supports 391, and the other roller support 391 is positioned inside the one roller support 391. It is possible. These two roller supports 391 are connected via a mounting shaft 394.

  The end portions of the biasing springs 393 are supported on the respective base portions 391a. Therefore, the length of the base portion 391a is shorter than the length of the opposing wall portion 391b so that the biasing spring 393 can be positioned between the two base portions 391a, and thereby, between the two base portions 391a. An opening 391c is formed in the upper part.

  Further, the rod portion 391a1 protrudes from the base portion 391a toward the opening portion 391c, and the rod portion 391a1 is inserted into the air core portion of the biasing spring 393. Accordingly, the biasing spring 393 is supported between the two base portions 391a. The urging spring 393 is a compression spring, and applies an urging force in a direction to press the wire rope W against the rope groove 311 with respect to each roller 392.

  Further, the opposing wall portion 391b is provided with a shaft hole 391b1, and the support shaft of the roller 392 is rotatably supported by the shaft hole 391b1. Further, the opposing wall portion 391b is also provided with a connection hole 391b2 for connecting the two roller supports 391. Then, the connecting hole 391b2 of the roller support 391 positioned on the outer side and the connecting hole 391b2 of the roller support 391 positioned on the inner side are aligned, and the mounting shaft 394 is inserted into these connecting holes 391b2. The mounting shaft 394 is connected to the sliding member 36 at the narrow portion 363 of the other sliding member 36. As a result, the roller support 391 is attached to the other sliding member 36 via the attachment shaft 394.

  In the conventional configuration, since the protrusions 361 of the two sliding members 36 are not the same shape, the protrusions having the same pitch number are positioned at the same position in the axial direction (X direction). However, in the present embodiment, as shown in FIG. 14, the two sliding members 36 have the same shape, but one protrusion 361 is shifted from the other protrusion 361 by a half pitch. positioned. Moreover, the sliding member 36 to which the guide member 38 is attached is shifted to the side on which the wire rope W is wound. For this reason, the axial length of the mounting shaft 394 of the pressing roller body 39 is shortened.

  With the configuration of the rope guide mechanism 34 as described above, the wire rope W can enter the rope groove 311 of the rope drum 31 through the guide opening 34a. Further, the wire rope W can be led out from the rope groove 311 through the guide opening 34a. At this time, since the pressing roller body 39 is provided on the opposite side of the circumferential direction with respect to the guide opening 34a, the wire rope W is prevented from being crumpled.

<5. About Trolley Mechanism 40>
Next, the trolley mechanism 40 will be described. As shown in FIGS. 1 to 6 and the like, the rope hoist 10 has a trolley mechanism 40. The trolley mechanism 40 includes a wheel 41 attached to the support frame 22 of the frame structure 20, a traversing motor 42, gear mechanism portions 43 and 44, a drive shaft 45, and a guide roller 46. The frame structure 20 may also constitute the trolley mechanism 40. Two wheels 41 are provided on each of the one side and the other side of the rail R (four in total). The wheel 41 is mounted on the flange portion R1 of the rail R.

  As shown in FIG. 7, a transverse motor 42 that generates a driving force is attached to the support frame 22 located on one side (Y1 side) in the width direction. The traversing motor 42 gives driving force to two wheels 41 located on one side (X1 side) in the longitudinal direction (X direction). More specifically, the driving force from the output shaft of the traversing motor 42 is transmitted to the drive shaft 45 via a gear wheel train (not shown) located inside the gear mechanism 43.

  The drive shaft 45 is provided along the width direction (Y direction), and the other end side (Y2 side) in the width direction (Y direction) is connected to the gear mechanism portion 44. A gear wheel train (not shown) is also provided inside the gear mechanism portion 44, and driving force is applied to the wheel 41 on the other end side (Y2 side) through the gear wheel train. Thereby, the two wheels 41 rotate at the same time, and the rope hoist 10 can travel stably.

  A guide roller 46 is attached to each support frame 22. When the traverse motor 42 is driven and the rope hoist 10 moves along the rail R, the rope hoist 10 may meander. In order to prevent such meandering, a guide roller 46 is provided in the vicinity of each wheel 41, and the guide roller 46 is in contact with the flange portion R 1 of the rail R. Thereby, the travel of the rope hoist 10 becomes stable. The guide rollers 46 are located slightly below the wheels 41 so as to come into contact with the flange portion R <b> 1, and are provided outside the wheels 41 in the longitudinal direction (X direction).

<6. About intermediate sheave body 50>
Next, the intermediate sheave body 50 will be described. As shown in FIGS. 3 and 6, an intermediate sheave body 50 is provided on the rear side (X2 side) of the traversing motor 42. FIG. 15 is a partial cross-sectional view showing a state in which the intermediate sheave body 50 is viewed from the side. FIG. 16 is a front sectional view showing the configuration of the intermediate sheave body 50.

  As shown in FIG. 15, the intermediate sheave body 50 includes an intermediate sheave 51 (pulley) on which the wire rope W is hung, and the intermediate sheave 51 has a concave groove 51b surrounded by a flange 51a. Further, the intermediate sheave 51 is arranged in a direction parallel to the rail R. The intermediate sheave body 50 enables the wire rope W to be relayed between adjacent hook sheaves 71 (see FIGS. 19 and 20) of a hook block 70 described later. The intermediate sheave body 50 is attached to the suspension shaft S1. Further, the intermediate sheave body 50 includes a hanging metal fitting 52, and the hanging metal fitting 52 is supported by the hanging hand shaft S1.

  As shown in FIGS. 15 and 16, the suspension fitting 52 has a pair of plate portions 521 that face each other, but is connected to the plate portions 521 at both ends and above the pair of plate portions 521. A portion 522 is provided. As shown in FIG. 15, the connecting portion 522 is provided in a curved shape so as to surround the suspension shaft S1, and the connection portion 522 swings (rotates) while contacting the suspension shaft S1. Thus, the intermediate sheave body 50 can swing (change direction). A portion between the pair of connecting portions 522 is a punched portion P.

  An intermediate sheave 51 is rotatably supported between the pair of plate portions 521. That is, each of the pair of plate portions 521 is provided with a shaft support hole 521a, and a support shaft 523 is attached to the shaft support hole 521a. A bearing 524 as a bearing is attached between the outer peripheral side of the support shaft 523 and the pair of plate portions 521, and the intermediate sheave 51 is attached to the outer peripheral side of the bearing 524. Thereby, the intermediate sheave 51 is provided so as to be rotatable with respect to the plate portion 521.

<7. About Rope Fixing Member 60>
Moreover, as shown in FIGS. 1-4, in order to fasten the one end side of the wire rope W, the rope fixing member 60 is provided. The rope fixing member 60 is attached to the terminal support shaft S2 described above. FIG. 17 is a side view showing the configuration of the rope fixing member 60. FIG. 18 is an exploded perspective view showing the configuration of the rope fixing member 60. As shown in FIGS. 17 and 18, the rope fixing member 60 includes a laterally rotating metal fitting 61, a connecting member 62, a vertical rotating metal fitting 63, and a wedge member 64 as main components. The laterally rotating metal fitting 61 is provided with a substantially U-shaped front surface, the substantially U-shaped curved portion 61a contacts the terminal support shaft S2, and the plate portions 61b continuous to the curved portion 61a are mutually connected. Opposite. By sliding between the curved portion 61a and the terminal support shaft S2, the laterally rotating metal fitting 61 can swing in the YZ plane.

  A shaft hole 61 c is provided in the pair of plate portions 61 b of the laterally rotating metal fitting 61. A connecting member 62 is disposed between the pair of plate portions 61b. Further, a through hole 62a for inserting the fixed shaft 65a is provided on the upper side of the connecting member 62. Therefore, by aligning the shaft hole 61c and the through hole 62a and inserting the fixed shaft 65a, the connecting member 62 is provided so as to be swingable in a plane including the extending direction of the rail R via the fixed shaft 65a. It has been.

  Further, a pair of plate portions 63a is also provided on the upper side of the vertical rotation fitting 63, and the lower side of the connection member 62 is disposed between the pair of plate portions 63a. Here, each of the pair of plate portions 63a is provided with a shaft hole 63b. A through hole 62 b is also provided below the connection member 62. Therefore, by aligning the shaft hole 63b and the through hole 62b and inserting the fixed shaft 65b, the longitudinally rotating metal fitting 63 can swing in a plane including the extending direction of the rail R via the connecting member 62. Is provided.

  Further, a rope fastening portion 63 c is provided on the lower side of the vertical rotation fitting 63. The rope fastening portion 63c is provided such that the upper side and the lower side of the quadrangular pyramid-shaped cylinder shape are opened, and a wire rope W and a wedge member 64 described later can be inserted from the upper side and the lower side. Moreover, the rope fastening part 63c is provided so that a cross-sectional area may become small as it goes below.

  As shown in FIGS. 17 and 18, a wedge member 64 is disposed inside the rope fastening portion 63c. In the configuration shown in FIG. 18, the wedge member 64 is formed by bending a rod-shaped member such as a bar (wire) having a predetermined diameter. The wedge member 64 has a curved portion with a large diameter on the upper side, but is provided so that the rod-shaped members are close to each other as it goes downward. Further, a wire rope W is provided on the outer peripheral side of the wedge member 64 so as to go around. Therefore, the wire rope W is sandwiched between the wedge member 64 and the inner wall of the rope fastening portion 63c, and the other end side of the wire rope W is fixed by the wedge fastening. In particular, when a large load acts on the wire rope W, the wedge member 64 tends to move downward. In this case, the wire rope W has a large clamping force between the wedge member 64 and the inner wall of the rope fastening portion 63c. It is sandwiched between. Thereby, the downward movement of the wire rope W is restricted.

  In addition, the most terminal side of the wire rope W is being fixed to the middle part of the wire rope W by the fixing bracket not shown below the rope fastening part 63c.

<8. About hook block 70>
Next, the hook block 70 will be described. As shown in FIGS. 1 to 6, the rope hoist 10 includes a hook block 70. The hook block 70 is suspended in a midway portion between one end side and the other end side of the wire rope W.

  FIG. 19 is a side view showing the configuration of the hook block 70. FIG. 20 is a side sectional view showing the configuration of the hook block 70. As shown in FIGS. 19 and 20, the hook block 70 includes a pair of hook sheaves 71, and the hook sheave 71 is attached to the sheave shaft portion 73 attached to the connecting shaft 72 via a bearing B1. It has been.

  On the outer periphery of the sheave shaft portion 73, a bracket support portion 73a, a flange portion 73b, and a bearing support portion 73c are provided. The bracket support portion 73a is a portion to which a bracket 75 described later is attached, and is inserted into the support hole 75a1 of the bracket 75, but is provided with a smaller diameter than the flange portion 73b. Therefore, the flange portion 73b cannot be inserted through the support hole 75a1 and is locked on the outer peripheral side thereof. The bearing support portion 73c is provided with a smaller diameter than the bracket support portion 73a, and the bearing B1 is disposed on the outer peripheral side thereof. A hook sheave 71 is attached to the outer peripheral side of the bearing B1, and thereby the hook sheave 71 is rotatably supported with respect to the connecting shaft 72.

  The hook sheave 71 is a pulley on which the wire rope W is hung, and most of the outer periphery of the hook sheave 71 is covered with a cover 74 for preventing foreign matter from being caught. As shown in FIG. 19, the cover 74 is provided with an opening 74 a through which the wire rope W is led out. The connecting shaft 72 is inserted through the cover 74 and protrudes to the outside. The protruding portion is provided with a screw portion 72a, and a nut N is screwed into the screw portion 72a. The positions of the shaft portion 73, the cover 74, and the hook sheave 71 in the axial direction are determined.

  A pair of brackets 75 are provided to support the above-described sheave shaft portion 73. In the configuration shown in FIG. 19 and FIG. 20, the bracket 75 has an approximately L-shaped appearance. A support hole 75a1 for inserting the above-described sheave shaft portion 73 is provided in the long piece portion 75a of the L shape. Further, the short piece portion 75 b orthogonal to the long piece portion 75 a is disposed in a state of facing the short piece portion 75 b of the other bracket 75. Thereby, the storage space part P1 surrounded by the long piece part 75a and the short piece part 75b is formed.

  Moreover, the half-opening part 75b1 is provided in the front-end | tip side which mutually opposes among the short piece parts 75b, and the insertion hole which inserts the axial support part 76a of the hook 76 by the two opening parts 75b1 facing each other. 75b2 is formed.

  A hook receiving portion 77 is disposed in the storage space portion P1 described above. The hook receiving portion 77 is provided with a thick rectangular shape in appearance, and a through hole 77a for inserting the shaft support portion 76a of the hook 76 from the lower side (Z2 side) is provided at the center side. ing. The The hook receiving portion 77 is provided on each of the pair of short piece portions 75b so as to be in surface contact with the lower surface side thereof, and is fixed to each short piece portion 75b with a screw or the like. By fixing the short piece portion 75b to the hook receiving portion 77, the position of the bracket 75 becomes fixed.

  A recess 77b is provided on the upper surface side of the hook receiving portion 77, and the bearing B2 is accommodated in the recess 77b. The bearing B2 is, for example, a thrust bearing, and rotatably supports a support nut 78 disposed on the top of the bearing B2. A recess 78a for accommodating the upper side of the bearing B2 is provided on the lower surface side of the support nut 78.

  The support nut 78 is provided with a screw hole 78b on its inner peripheral side, and a male screw part 76b on the outer peripheral side of the shaft support part 76a of the hook 76 is screwed into the screw hole 78b. Further, a locking pin 79 is inserted into the support nut 78 and the shaft support portion 76a so that the screwed state of the screw hole 78b and the male screw portion 76b is not loosened.

  The hook 76 has a shaft support portion 76a and a hook body portion 76c. The shaft support portion 76a is a portion protruding upward from the hook main body portion 76c, and has a circular cross section. A male screw portion 76b is provided on the outer peripheral side above the shaft support portion 76a, and the male screw portion 76b is screwed into the screw hole 78b. Moreover, the hook main body part 76c is a part which loads a load, and the external appearance is provided in the hook shape.

  A lever 76d for preventing the hooked load from being removed is attached to the hook body 76c. One end side of the lever 76d is located on the upper side (Z1 side), and is provided so as to be rotatable about a rotation shaft 76e on one end side thereof. Further, the other end side of the lever 76d is located on the lower side (Z2 side), and is provided so as to contact the inner periphery on the tip side of the hook main body portion 76c. The lever 76d is provided so that a biasing force by a spring (not shown) acts and the other end always comes into contact with the inner periphery of the tip end side of the lever 76d. Thereby, in the state where no external force is applied to the lever 76d, the closed state of the lever 76d can be maintained, and it is possible to prevent the lever 76d from opening and dropping the load.

<9. About counterweight 80>
Next, the counter weight 80 will be described. As shown in FIGS. 1 to 7, the rope hoist 10 is provided with a counterweight 80. The counterweight 80 is provided to balance the rope hoist 10 in the width direction (Y direction). That is, a rope drum mechanism 30 composed of a number of components is provided on the other end side (Y2 side) of the rope hoist 10 in the width direction (Y direction), and the weight thereof is relatively large. . In order to balance the weight with the rope drum mechanism 30, a counterweight 80 is connected to one end side (Y1 side) of the connecting bar 24 in the width direction (Y direction).

  The counterweight 80 is a plate-like member composed of a thick steel plate or the like, and is provided so as to extend between the pair of connecting bars 24. Moreover, in the present embodiment, the area in the XZ plane is larger than that of the control unit 90 and the braking resistor 100. Therefore, although the weight of the counterweight 80 is relatively large, the counterweight 80 is provided sufficiently smaller than the total weight of the rope drum mechanism 30. Therefore, in order to balance the moment in the width direction (Y direction), the distance between the counterweight 80 and the front and rear frames 21 on one side (Y1 side) is the front and rear on the rope drum mechanism 30 and the other side (Y2 side). It is provided larger than the distance between the frames 21.

  Due to the arrangement of the counterweight 80, a relatively large space SP is provided between the intermediate sheave body 50 and the counterweight 80, as shown in FIGS.

<10. About Control Unit 90>
Next, the control unit 90 will be described. The control unit 90 is a part that controls the driving of the rope hoist 10 including the drum motor 32 and the traversing motor 42. Therefore, in the control unit 90, a control device for executing these controls is arranged inside. Examples of the control device include a main control unit that controls the whole, a motor driver, a power source, and the like, and these are covered with a cover member 91. The control unit 90 is also provided with a braking circuit for performing control when a current is passed through the braking resistor 100. The control unit 90 is fixed to one surface (Y1 side) of the counterweight 80 via a screw or the like.

<11. About Braking Resistor 100>
Next, the braking resistor 100 will be described. The braking resistor 100 corresponds to the braking resistance unit and is provided to perform inverter control of the drum motor 32. The braking resistor 100 has a regenerative braking capability by lowering the driving frequency of the drum motor 32 than during operation. It is possible to demonstrate. The braking resistor 100 includes a resistor (not shown), and converts the electric energy into heat by flowing electric energy returned from the drum motor 32 through the resistor. The rotational speed of the drum motor 32 is suppressed by the conversion into the heat.

  The resistor of the braking resistor 100 may be any resistor as long as it can handle a large current, such as a hollow resistor or a cement resistor.

  FIG. 21 is a perspective view showing an internal configuration of the braking resistor 100. As shown in FIG. 21, the braking resistor 100 includes a resistance unit 101 in which a radiating fin member 102 is disposed so as to surround a resistor (not shown), and the resistance unit 101 is interposed via an attachment stay 103. It is fixed to the counterweight 80 via screws or the like. Thus, when the resistance cover 103 of the braking resistor 100 is attached to the counterweight 80 in an opened state, heat is transmitted to the counterweight 80, and the counterweight 80 can function as a heat sink. It is possible.

  The resistor unit 101 is entirely covered with a resistor cover 103, and the resistor cover 103 is provided with a plurality of heat radiation slits 103a that are openings for heat radiation. In the present embodiment, the heat dissipating slits 103a are formed in a long hole shape, and a plurality of rows of heat dissipating slits 103a are arranged in a plurality of rows.

  Here, the braking resistor 100 is attached to a surface of the counterweight 80 on the other side (Y2 side) in the width direction (Y direction). Therefore, the braking resistor 100 is provided so as to protrude to the space SP side. FIG. 22 is a plan view showing a state in which the braking resistor 100 protrudes into the space SP.

  As shown in FIG. 22, the braking resistor 100 is arranged so as not to overlap with other members such as the traversing motor 42 and the pair of connecting bars 24 in the vertical direction (Z direction). Therefore, the dimension in the vertical direction (Z direction) of the braking resistor 100 can be increased. In addition, the size of the rope hoist 10 in the vertical direction (Z direction) can be reduced. Further, since the dimension in the vertical direction (Z direction) can be reduced, the load suspended on the hook 76 can be raised by the reduction in the dimension.

  By the way, the rope hoist 10 is not limited to the rail R even when the assumed rail R has the maximum width (including the case where a plurality of rails R are arranged at the beginning including the case where two rails R are arranged). It needs to be mounted well. Therefore, even when the rail R has the assumed maximum width, the front and rear frames 21 on one side with respect to the connection bar 24 are moved to one side (Y1 side) in the width direction (Y direction), so that the wheels 41 It is necessary to be able to move upward while avoiding the flange portion R1. That is, when the wheel 41 is mounted on the rail R having the maximum width, the wheels 41 on both sides in the width direction (Y direction) move upward to avoid the flange portion R1. It needs to be possible.

  Here, the position of the front and rear frames 21 on one side (Y1 side) when mounted on the assumed maximum width rail R is set as a reference position, and the width direction (Y L1 is a dimension between a portion on the most one side (Y1 side) in the direction) and a portion on the other side (Y2 side) in the width direction (Y direction) of the braking resistor 100. With respect to the dimension L1, when riding, the front and rear frames 21 on one side are moved toward the braking resistor 100 side by the total width of the wheels 41 on both sides and the margin.

  It is necessary to prevent the intermediate sheave body 50 and the braking resistor 100 from interfering with the movement of the front and rear frames 21 on one side. Therefore, the space SP needs to be set to a size larger than the sum of the widths of the two wheels 41 and a margin. In addition, an appropriate dimension can be set as the dimension of the margin, and the margin may be zero.

  Moreover, you may set a dimension as follows. That is, the above-described dimension L1 may be a dimension that is more than the sum of the widths of the flange portions R1 of the two rails R on which the wheels 41 are mounted and a further margin. As apparent from FIGS. 5 and 6, the width of the flange portion R <b> 1 of the rail R is larger than the width of the wheel 41. For this reason, it is possible to achieve a good ride even with such a dimension setting.

  Here, as shown in FIGS. 5 and 6, the lower end side (Z2 side) of the counterweight 80 is provided to have the same height as the lower end side (Z2 side) of the rope drum mechanism 30 (see FIG. 5). 5 and FIG. 6, any lower end side is located on the alternate long and short dash line M). Moreover, the height of the lower end side (Z2 side) of the braking resistor 100 is located above (Z1 side) the height of the lower end side (Z2 side) of the counterweight 80. Therefore, it is possible to prevent the size of the rope hoist 10 in the height direction from becoming small as in the case where any one of the lower end sides (Z2 side) protrudes downward.

<12. Effect>
In the rope guide mechanism 34 and the rope hoist 10 in the rope drum mechanism 30 configured as described above, the two sliding members 36 constituting the ring member 35 can be shared. For this reason, when manufacturing the two sliding members 36, it is not necessary to use separate molds, and the manufacturing cost can be reduced.

  In particular, in the present embodiment, in the first fixing portion F1 where the one end connecting portion 364a of one sliding member 36 and the other end connecting portion 364b of the other sliding member 36 are connected, a protrusion is formed between them. The spacer 37 having a width corresponding to one pitch of the strip 361 is fixed in an interposed state. Further, the first fixing portion F1 is connected to the other end connecting portion 364b of one sliding member 36 and the one end connecting portion 364a of the other sliding member 36, which are opposite positions in the circumferential direction. In 2 fixing | fixed part F2, these are being fixed in the state which contacts directly. Therefore, the width of each sliding member 36 can be minimized. Further, in the two sliding members 36 having a common shape, the threads of the protrusion 361 and the thread valleys can be communicated with each other.

  Furthermore, in the present embodiment, a guide member 38 is attached to one sliding member 36 of the two sliding members 36 so as to be positioned between the pair of wide portions 362. The connecting portion 382 is connected to the sliding member 36, and the arc-shaped portion 381 is located in a state where the narrow portion 363 has a gap larger than the diameter of the wire rope W. For this reason, the guide opening 34a can be formed satisfactorily.

  Further, the guide member 38 is provided with a hook-shaped engagement portion 383 that slides with respect to the guide shaft G. Therefore, the single guide member 38 can combine the formation of the guide opening 34a and the sliding to the guide shaft G, and the number of parts can be reduced. Further, since the engaging portion 383 is provided in a bowl shape, the rope drum mechanism 30 is difficult to be detached from the guide shaft G. Therefore, even if vibration is applied to the rope hoist 10, it is possible to guide winding and unwinding while suppressing the wire rope W wound around the rope drum 31 satisfactorily.

  Further, in the present embodiment, in the wide portion 362, an opposing guide portion 362a facing the wire rope W entering the rope groove 311 is provided in a portion adjacent to the protrusion 361 in the axial direction (X direction). It has been. In addition, an extended guide portion 362 b facing the wire rope W entering the rope groove 311 is provided at a portion on the inner peripheral side (inner diameter side) from the connecting portion 382. For this reason, the area facing the wire rope W entering the rope groove 311 can be increased on the sliding member 36 side. As a result, it is possible to better prevent the wire rope W from being randomly wound, such as the wire rope W entering the rope groove 311 coming off in some time.

  Further, in this embodiment, the narrow portion 363 of the sliding member 36 to which the guide member 38 is not attached has a roller 392 that contacts the wire rope W entering the rope groove 311. A pressing roller body 39 is attached via an attachment shaft 394. Moreover, the pressing roller body 39 has a biasing spring 393 that applies a biasing force that prevents the wire rope W from coming off the rope groove 311. Therefore, it is possible to satisfactorily prevent the wire rope W from being crumpled.

  Here, in the conventional configuration, since the protrusions 361 of the two sliding members 36 are not the same shape, the protrusions having the same pitch number are located at the same position in the axial direction (X direction). However, in the present embodiment, as shown in FIG. 14, the positional relationship between two sliding members 36 having the same shape is such that one protrusion 361 is axially half pitch with respect to the other protrusion 361 ( It is located at a position shifted in the (X direction). Moreover, the sliding member 36 to which the guide member 38 is attached is shifted to the side on which the wire rope W is wound. For this reason, the axial length of the mounting shaft 394 of the pressing roller body 39 is shortened, thereby reducing the stress at the mounting shaft 394 and the fixing portion of the mounting shaft 394 (the narrow portion 363 side and the roller support 391 side). be able to.

<13. Modification>
As mentioned above, although each embodiment of this invention was described, this invention can be variously deformed besides this. This will be described below.

  In the above-described embodiment, the spacer 37 has a width corresponding to one pitch of the protrusion 361. In the first fixing part F1, the one end connection part 364a and the other end connection part 364b are fixed in a state where the spacer 37 is interposed, but in the second fixing part F2, the spacer 37 is not interposed and directly The one end connection portion 364a and the other end connection portion 364b are fixed. However, a spacer may be arranged also in the second fixing portion F2. In that case, the spacer in the first fixing portion F1 has a width corresponding to an integer multiple of 2 or more of the protrusion 361, and the number of spacers in the second fixing portion F2 is smaller than the spacer in the first fixing portion F1. It can have a width corresponding to an integer multiple of the pitch.

  In addition, when the pitch number of the protrusion 361 is large, the difference between the width of the spacer in the first fixing portion F1 and the width of the spacer in the second fixing portion F2 may be two or more pitches. Even in this case, the protrusion 361 between the two sliding members 36 needs to communicate with each other for at least one turn in the circumferential direction of the rope drum 31. However, the difference between the width of the spacer in the first fixed portion F1 and the width of the spacer in the second fixed portion F2 is preferably 1 pitch.

  Further, in the above-described embodiment, the dimension L1 is equal to the both sides when the position of the front and rear frame 21 on one side (Y1 side) when mounted on the rail R having the assumed maximum width is used as the reference position. The total of the width of the wheel 41 and the dimension more than the extra amount are set. However, the dimension L1 is the dimension between the inner side of the guide roller 46 in the width direction (Y direction) (the side in contact with the flange portion R1) and the inner side of the guide roller 46 and the inner side of the wheel 41 (the center side of the rail R). ), And a dimension with a margin added may be used.

  In the above-described embodiment, the drum motor 32 is described as being inverter-controlled. However, the traverse motor 42 may be controlled by an inverter.

  In the above-described embodiment, the rope hoist 10 including the trolley mechanism 40 having the traversing motor 42 is described. However, even if the rope hoist is equipped with a manual trolley mechanism without the traversing motor 42, the present invention is applied as long as it has the braking resistor 100 for inverter-controlling the drum motor 32. May be.

  In the rope hoist 10 in the above-described embodiment, one end of the wire rope W is fixed to the rope drum 31, the other end of the wire rope W is fixed to the rope fixing member 60, and the intermediate sheave body 50 is disposed therebetween. In addition, it is a so-called 4/1 multiplication type. However, the present invention is not applied only to the 4/1 multiplication type. For example, although one end of the wire rope W is fixed to the rope drum 31 and the other end of the wire rope W is fixed to the rope fixing member 60, the present invention is a so-called 2/1 hanging type that does not use an intermediate sheave body. May be applied. One end of the wire rope W is fixed to one rope drum 31, and the other end of the wire rope W is connected to the other rope drum (the rope groove of this rope drum is opposite to the rope drum 31). The present invention may be applied to a so-called 4 / 2-hanging type in which the intermediate sheave body 50 is disposed between them.

DESCRIPTION OF SYMBOLS 10 ... Rope hoist, 20 ... Frame structure, 21 ... Front-and-rear frame (corresponding to drum side frame, weight side frame), 22 ... Support frame, 23 ... Connection frame, 24 ... Connection bar, 25 ... Mount member, 27 ... Intermediate sheave Support part, 28 ... Terminal support part, 29 ... Drum support frame, 30 ... Rope drum mechanism, 31 ... Rope drum, 32 ... Drum motor, 33 ... Reduction mechanism, 34 ... Rope guide mechanism, 34a ... Guide opening, 35 ... Ring member, 36 ... Sliding member (corresponding to the first sliding member and the second sliding member), 37 ... Spacer, 38 ... Guide member, 39 ... Pressing roller body, 40 ... Trolley mechanism, 41 ... Wheel, 42 ... traversing motor, 43 ... gear mechanism, 44 ... gear mechanism, 45 ... drive shaft, 46 ... guide roller, 50 ... intermediate sheave body, 51 ... intermediate sheave 51a ... Flange, 51b ... concave groove, 52 ... hanging bracket, 60 ... rope fixing member, 61 ... laterally rotating bracket, 62 ... connecting member, 63 ... longitudinally rotating bracket, 64 ... wedge member, 65a, 65b ... Fixed shaft, 70 ... Hook block, 71 ... Hook sheave, 72 ... Connecting shaft, 72a ... Screw part, 73 ... Sheave shaft part, 73a ... Bracket support part, 73b ... Flange part, 73c ... Bearing support part, 74 ... Cover, 74a ... Opening part, 75 ... Bracket, 75a ... Long piece part, 75b ... Short piece part, 76 ... Hook, 76a ... Shaft support part, 76b ... Male thread part, 76c ... Hook body part, 76d ... Lever, 76e ... Rotating shaft, 77 ... Hook receiving part, 77a ... Through hole, 77b ... Recess, 78 ... Support nut, 78a ... Recess, 78b ... Screw hole, 79 ... Locking pin, 80 ... Counterweight, 90 ... Control part, 91 ... Cover 100: Braking resistor (corresponding to the braking resistor portion), 101: Resistance unit, 102: Radiation fin member, 103 ... Mounting stay, 103 ... Resistance cover, 103a ... Radiation slit, 271 ... Mounting frame, 281 ... Shaft holding 311 ... Rope groove, 312 ... Rope holding bracket, 312a ... Recess, 312b ... Screw, 313,314 ... Shaft support, 314a ... Ring-shaped projection, 314b ... Bearing, 315 ... Drum rotation shaft, 316 ... Gear housing, 318 ... Mounting frame, 319 ... Cover frame, 321 ... Output shaft, 322a ... Bearing, 331 ... Pinion gear, 332 ... Gear train, 361 ... Projection, 362 ... Wide part, 363 ... Narrow part, 364 ... Connection part, 364a ... one end connection part, 364b ... other end connection part, 381 ... arc-shaped part, 382 ... coupling part, 383 ... engagement part, 38 3a ... concave portion, 391 ... roller support, 391a ... base portion, 391b ... opposing wall portion, 391c ... opening, 392 ... roller, 393 ... biasing spring (corresponding to biasing means), 394 ... mounting shaft, 521 ... Plate portion, 521a ... shaft support hole, 522 ... connection portion, 523 ... support shaft, 524 ... bearing, 751a ... support hole, 751b ... opening, 752b ... insertion hole, B1, B2 ... bearing, BT ... bolt (coupling means) ), G ... guide shaft, NT ... nut (corresponding to the coupling means), S1 ... hanger shaft, S2 ... terminal support shaft

Claims (7)

A rope guide mechanism for preventing a wire rope wound around a rope drum of a rope hoist,
A protrusion that is screwed into a spiral rope groove formed at a constant lead angle on the outer periphery of the rope drum is formed on the inner peripheral side, and one end connection portion on one end side and the other end side in the circumferential direction, and A first sliding member provided with the other end connection part;
A second sliding member having the same shape as the first sliding member and connected to the first sliding member to form a ring-shaped ring member;
With
One end connection portion of the first sliding member and the other end connection portion of the second sliding member are coupled by a coupling means, and the other end connection portion of the first sliding member and one end connection of the second sliding member are connected. Parts are joined by a joining means,
The ridges of the first sliding member and the ridges of the second sliding member are so screwed together that at least one circumference in the circumferential direction of the rope drum is one circumference of the rope groove. It is connected,
A rope guide mechanism characterized by that. The rope guide mechanism according to claim 1,
In the case where a portion where the one end connecting portion of the first sliding member and the other end connecting portion of the second sliding member are coupled by the coupling means is a first fixing portion, A spacer having a width corresponding to an integer pitch of the first sliding member is fixed in a state of being interposed between the one end connecting portion of the first sliding member and the other end connecting portion of the second sliding member,
In a case where a portion where the other end connection portion of the first sliding member and the one end connection portion of the second connection portion are coupled by the coupling means is a second fixing portion, the second sliding portion has the first sliding portion. In a state where the other end connection portion of the moving member and the one end connection portion of the second connection portion are fixed in direct contact with each other, or a spacer having a width corresponding to an integer pitch different from that of the first fixing portion is interposed Fixed,
A rope guide mechanism characterized by that. The rope guide mechanism according to claim 1 or 2,
The spacer located at the first fixing part has a width corresponding to one pitch of the protrusion, and the second connecting part and the second connecting part of the first sliding member at the second fixing part. It is fixed in a state where it is in direct contact with one end connection part of the
A rope guide mechanism characterized by that. The rope guide mechanism according to claim 3,
The first sliding member and the second sliding member include a narrow portion, one wide end portion located on one end side in the circumferential direction of the narrow portion, and the circumferential direction among the narrow portions. And the other end wide portion located on the other end side of
The one end wide part and the other end wide part protrude toward one side in the width direction of the narrow part,
From the one end wide part and the other end wide part, the one end connection part and the other end connection part protrude toward the one end side and the other end side in the circumferential direction, respectively.
A guide member is attached between the one wide end portion and the other wide end portion of either the first sliding member or the second sliding member,
The guide member is connected to the first sliding member or the second sliding member, and an arcuate portion facing the narrow portion with a gap larger than the diameter of the wire rope. And
Furthermore, the guide member is provided with a hook-shaped engaging portion that slides with respect to a guide shaft that guides the sliding of the ring member along the rope drum.
A rope guide mechanism characterized by that. The rope guide mechanism according to claim 4,
Of the wide end portion at one end and the wide end portion at the other end, a portion of the ring member adjacent to the protrusion in the axial direction faces the wire rope entering the rope groove, and the wire rope is randomly wound. There is an opposing guide that prevents the
An extension guide that is continuous with the opposing guide portion and prevents the wire rope from being randomly wound opposite to the wire rope that has entered the rope groove at a portion on the inner peripheral side of the connecting portion. Part is provided,
A rope guide mechanism characterized by that. The rope guide mechanism according to claim 4 or 5,
A pressing roller body having a roller that contacts the wire rope entering the rope groove is attached to the narrow portion of the other of the first sliding member and the second sliding member. Attached through the shaft,
The pressing roller body includes an urging unit that applies an urging force to the roller so that the wire rope entering the rope groove is not turbulently wound.
Either one of the first sliding member and the second sliding member to which the roller body is attached is located on the side where the wire rope is wound around the rope drum rather than either one. Yes,
A roller guide mechanism characterized by that. A rope hoist using the rope guide mechanism according to any one of claims 1 to 6.