JP4947276B2 - Suspended overhead crane - Google Patents

Description

  The present invention relates to an improvement of a suspended overhead crane suspended from a traveling rail installed near the ceiling of a building.

  Conventionally, a suspended overhead crane is known that is suspended by a pair of traveling rails installed in parallel near the ceiling of a building. FIG. 13 and FIG. 14 show an example of this type of suspended overhead crane 41. In this suspended overhead crane 41, a crane girder 43 is stretched between a pair of traveling rails 42 made of I-shaped steel. The crane girder 43 is supported on each traveling rail 42 via a pair of crane saddles 44 capable of traveling on each traveling rail 42. In the crane saddle 44, a saddle frame 45 is constituted by a pair of plate members 46 and 47 arranged to face each other with the traveling rails 42 opposed to each other, and a pair of saddle frames 45 is provided on one side (right side in FIGS. 13 and 14). A drive wheel 48 is provided and a pair of driven wheels 49 are provided on the other side (left side in FIGS. 13 and 14). In the suspended overhead crane 41, the pair of driving wheels 48 are driven by the electric motor 50 via the reduction gear, and the crane saddle 44 travels along the traveling rail 42 so that the crane girder 43 moves in the longitudinal direction of the building. Moving.

  By the way, in the suspended overhead crane 41, the crane girder 43 and the crane saddle 44 are connected to the plate 43 a joined to both ends of the crane girder 43 and the plate 45 a joined to each saddle frame 45 by bolts and nuts 51. Combined by fixing. And in the case of the suspension type overhead crane 41 with a small capacity (less than 3 tons), a shape steel such as I-shaped steel is often used as the crane girder 43, and the shape steel has a shape with an open cross section. Even if there is an irregularity such as a gradient in 42, since the entire mounting error including the pair of traveling rails 42 is absorbed by the deformation of the shape steel (crane girder 43), smooth traveling of the crane girder 43 is ensured. The On the other hand, in the case of a suspended overhead crane 41 with a medium capacity (3 to 10 tons), the strength is insufficient if only the I-shaped steel is used for the crane girder 43. Therefore, the open side of the steel plate whose section is press-formed in a substantially U-shape. A so-called box-type crane girder 4 (see FIGS. 1 and 2) formed by joining a flange member that guides the trolley to the end face is used.

  When the box-type crane girder 4 having a closed cross section is used, the torsional rigidity of the crane girder 4 is greatly increased. Accuracy is required. However, since the crane girder 4 is a large welded structure, high technology and expensive equipment are required to manufacture the crane girder 4 with high dimensional accuracy. Even if the dimensional accuracy of the crane girder 4 is increased, the torsional rigidity of the crane girder 4 is increased when the installation accuracy of the traveling rail 42 is not ensured or when the traveling rail 42 is inclined due to ground subsidence or the like. Due to the increased effect, the crane girder 4 cannot be deformed to absorb the irregularity of the traveling rail 42, and it is difficult to ensure smooth cargo handling traveling.

Therefore, Patent Document 1 discloses a crane that absorbs irregularities in a traveling rail by swinging a crane saddle in the traveling direction of the crane girder with respect to the crane girder. In the crane disclosed in Patent Document 1, a joint mechanism that swingably connects the crane saddle and the crane girder is interposed between the lower surface of the crane saddle (below the traveling rail) and the upper surface of the crane girder. That is, since the crane girder is suspended from the crane saddle via the joint mechanism, the crane height is the same as the height of the joint mechanism (the traverse wheel tread on which the hoisting machine traverses and the traveling wheel tread on which the crane travels). (H dimension shown in FIG. 13) increases at a vertical distance up to. If the overall height of the crane is increased, the lift of the crane is inevitably lowered, resulting in a problem that the crane handling range is narrowed.
Utility Model Registration No. 2565851

  Then, this invention is made | formed in view of the said situation, and it aims at providing the suspension type overhead crane with which stable driving | running | working is ensured, without sacrificing a lift.

  To achieve the above object, the invention according to claim 1 of the present invention is a suspended overhead crane that is suspended by a pair of traveling rails installed in parallel near the ceiling of a building, and travels on each traveling rail. A pair of crane saddles and a pair of traveling rails are spanned and one side is supported by one crane saddle by fixed support means, and the other side swings to the other crane saddle via swing support means. And a swing girder supported by the swing support means. The swing shaft of the swing support means is disposed on both sides of the traveling rail on which the other crane saddle travels.

  In order to achieve the above object, the invention according to claim 2 of the present invention is a suspended overhead crane that is suspended by a pair of traveling rails installed in parallel near the ceiling of a building and travels on each traveling rail. A pair of crane saddles, and a crane girder spanned between the pair of traveling rails and supported on each crane saddle so that both sides in the longitudinal direction are swingable via swing support means. The rotating shaft on which the support means swings is disposed on both sides of the traveling rail on which the opposing crane saddle travels.

  To achieve the above object, the invention according to claim 3 of the present invention is a suspended overhead crane suspended from at least three traveling rails installed in parallel near the ceiling of a building. A plurality of crane saddles that are provided opposite to each other and run on the opposite traveling rails, and are supported by at least one crane saddle by fixed support means, and the remaining crane saddles via swing support means. And a crane girder supported so as to be swingable and spanned between the traveling rails, and a rotating shaft on which the swing supporting means swings is disposed on both sides of the traveling rail on which the crane saddle travels. It is characterized by being arranged in.

  To achieve the above object, the invention according to claim 4 of the present invention is a suspended overhead crane suspended from at least three traveling rails installed in parallel near the ceiling of a building. A plurality of crane saddles that are provided opposite to each other and run on the running rails opposed to each other, and spanned between the running rails, are supported by each crane saddle so as to be swingable via swing support means. A crane girder, wherein the swinging rotating shaft of the swinging support means is disposed on both sides of the traveling rail on which the opposing crane saddle travels.

  According to a fifth aspect of the present invention, in the suspended overhead crane according to any one of the first to fourth aspects, the swing support means sandwiches the crane saddle which is erected on the upper surface of the crane girder and faces the crane saddle. A pair of swing-side support members disposed opposite to each other, and each swing-side support member and each side surface of the crane saddle facing each swing-side support member are supported via a swinging rotating shaft. It is characterized by that.

  According to a sixth aspect of the present invention, in the suspended overhead crane according to any of the first to fifth aspects, the rotating shafts of the swing support means swing on each side surface of the crane saddle. A pair of receiving members disposed opposite to the swing side support member are provided, and a swing shaft projects from one of the receiving member and the swing side support member facing each other, and the swing shaft is connected to the other. A shaft hole that is slidably fitted is provided and formed.

  The invention according to claim 7 is characterized in that, in the suspended overhead crane according to any one of claims 1 to 6, a saddle accommodating portion for accommodating each crane saddle is provided on an upper surface of the crane girder. To do.

Therefore, in the suspended overhead crane according to the first aspect, the crane girder is fixedly supported by one crane saddle, and the other crane saddle swings around a swinging rotating shaft disposed on both sides of the traveling rail. It is supported movably.
In the suspended overhead crane according to the second aspect, the crane girder is supported by a pair of crane saddles so as to be swingable around a swinging rotating shaft disposed on both sides of the traveling rail.
In the suspended overhead crane according to claim 3, the crane girder is fixedly supported by at least one crane saddle, and is swung around a swinging rotating shaft disposed on both sides of the traveling rail by the remaining crane saddle. Supported as possible.
In the suspended overhead crane according to the fourth aspect, the crane girder is supported by each crane saddle so as to be swingable around a swinging rotating shaft disposed on both sides of the traveling rail.
In the suspended overhead crane according to claim 5, the pair of swing side support members and each side surface of the crane saddle facing each swing side support member are connected via a swinging rotating shaft. Thus, the crane girder is supported by the crane saddle.
In the suspended overhead crane according to claim 6, the swinging shaft provided on one of the receiving member and the swinging side support member is slidably fitted into the shaft hole. Thus, the opposed (oppositely facing) swing-side support member and the receiving member are connected.
In the suspended overhead crane according to the seventh aspect, the overall height of the crane girder is reduced by the height of the crane saddle accommodated in the saddle accommodating portion, and the lift of the crane can be earned.

  It is possible to provide a suspended overhead crane that ensures stable traveling without sacrificing the lift.

  An embodiment of the present invention will be described with reference to FIGS. For convenience of explanation, the upper direction and the upper side in FIG. 1 are the upper side and the upper side, the lower direction and the lower side in FIG. 1 are the lower side and the lower side, the lower direction and the lower side in FIG. 2 are referred to as the rear and rear sides, the left direction and the left side in FIG. 2 are referred to as the left side and the left side, and the right direction and the right side in FIG. As shown in FIG. 1, the suspended overhead crane 1 is suspended by a pair of traveling rails 2 and 3 extending in the front-rear direction and installed in parallel near the ceiling of the building. In the suspended overhead crane 1, a crane girder 4 extending in the left-right direction is stretched between a pair of traveling rails 2 and 3, and both side portions of the crane girder 4 can travel on the traveling rails 2 and 3. Supported by each crane saddle 5,6. Furthermore, in the suspended overhead crane 1, the left side of the crane girder 4 is supported by one crane saddle 5 via a fixed support mechanism (fixed support means), and the right side of the crane girder 4 is supported by a swing support mechanism (swing). It is supported by the other crane saddle 6 via support means).

  And this suspension type overhead crane 1 absorbs the irregularity of the pair of traveling rails 2 and 3 by swinging the crane saddle 6 in the front-rear direction with respect to the crane girder 4 by the swing support mechanism. It has a structure that ensures the running. As shown in FIG. 1, the pair of running rails 2 and 3 are formed of I-shaped steel, and the upper flanges 2a and 3a are fixed to the beam of the building, and the lower flanges 2b and 3b The crane saddles 5 and 6 are configured to travel. As shown in FIGS. 1 and 2, the crane saddle 5 has a saddle frame 10 formed by joining both end portions of a pair of opposing plate members 7 and 8 to an end plate 9. Each of the plate members 7 and 8 is formed with an outer flange that extends outward of the saddle frame 10 at the upper end portion and an inner flange that extends inward of the saddle frame 10 at the lower end portion.

  The crane saddle 5 accommodates a pair of drive wheels 11 on the front side between the plate members 7 and 8 of the saddle frame 10 and a pair of driven wheels 12 on the rear side. Then, the crane saddle 5 is driven by the electric motor 13 provided on the right side surface (plate material 8) of the saddle frame 10 via the speed reducer so that the lower side of the traveling rail 2 is driven. The structure travels in the front-rear direction on the flange 2b. Since the crane saddle 6 has a symmetrical structure with respect to the crane saddle 5, a detailed description thereof will be omitted. The crane girder 4 is formed in a box shape having a closed cross section by joining a flange member 15 to an open end face of a member obtained by press-forming a steel plate into a substantially U-shaped cross section. In the suspended overhead crane 1, the hoisting machine 16 suspended by the trolley 14 is traversed by the trolley 14 traveling on a pair of flange members 15 extending in the left-right direction formed before and after the crane girder 4. It has a structure to do.

  As shown on the left side of FIG. 1 and FIG. 2, the fixed support mechanism includes a pair of fixed-side support members 17 and 18 erected on the upper surface of the crane girder 4. As shown in FIG. 3, the fixed-side support members 17 and 18 are formed by pressing a steel plate into a substantially U-shaped cross section, and the opposing portions 17 a and 18 a are arranged to face each other with the crane saddle 5 interposed therebetween. Is done. In the suspended overhead crane 1, the fixed-side support member 17 and the plate material 7 of the saddle frame 10 are fixed by four pairs of bolts and nuts 19, and the fixed-side support member 18 and the plate material 8 of the saddle frame 10 are Is fixed by four pairs of bolts and nuts 19 so that the left side of the crane girder 4 is supported (fixedly supported) on the crane saddle 5 via a fixed support mechanism. As shown in FIGS. 4 and 5, the swing support mechanism includes a pair of swing side support members 20, 21 erected on the upper surface of the crane girder 4, and a saddle frame 22 of the crane saddle 6. Two receiving members 25 and 26 which are attached to the plate members 23 and 24 and are engaged with the respective swinging side support members 20 and 21 facing each other.

  As shown in FIG. 6, each of the swing side support members 20 and 21 is formed by pressing a steel plate into a substantially U-shaped cross section, and the opposing portions 20 a and 21 a face each other with the crane saddle 6 interposed therebetween. Be placed. Each of the opposing portions 20a and 21a is provided with a boss-shaped swing shaft 27 standing at the center of the opposing surface and four nut housing holes 28. As shown in FIG. 7, each receiving member 25, 26 is formed by joining a receiving plate 25 b (26 b) to the center of one side surface of a substrate 25 a (26 a) in which bolt insertion holes 29 are arranged at four corners, A shaft hole 30 into which the swing shaft 27 is slidably fitted is formed in the center of the receiving plate 25b (26b). Then, by fitting the swing shaft 27 provided on the swing-side support member 20 (21) into the shaft holes 30 of the members 25 and 26, the center of the swing shaft 27 and the center of the shaft hole 30 are brought about. A swingable rotation shaft is formed. In the present embodiment, the rocking side support member 20 (21) is provided with the rocking shaft 27, and the receiving plate 25b (26b) of the receiving members 25 and 26 is provided with the shaft hole 30; Of course, the shaft hole 30 may be provided in the swing side support member 20 (21), and the swing shaft 27 may be provided in the receiving members 25 and 26. As shown in FIG. 5, in the swing support mechanism, each shaft hole 30 of each receiving member 25, 26 is fitted to each swing shaft 27 of each swing side support member 20, 21. The receiving members 25 and 26 are fixed to the plate members 23 and 24 of the crane saddle 6 by four pairs of bolts and nuts 31. The nuts 31b of the four pairs of bolts and nuts 31 are received in the corresponding nut receiving holes 28 of the swing side support members. The plate members 23 and 24 of the saddle frame 22 are provided with bolt insertion holes 32 through which the bolts 31a of the bolts and nuts 31 are inserted.

  In the swing support mechanism configured in this way, a swing shaft that can swing is formed by the swing shaft 27 and the shaft hole 30, and the crane saddle 6 is located on both the left and right sides of the traveling rail 3 with respect to the crane girder 4. It is possible to oscillate around the rotating shaft arranged in the. Thus, in the suspended overhead crane 1, the right side of the crane girder 4 swings around the rotation shaft disposed on the left and right sides of the traveling rail 3 to the other crane saddle 6 via the swing support mechanism. It is supported (oscillating support) as possible. The swinging movement of the crane saddle 6 about the rotation axis relative to the crane girder 4 is such that the swingable range is as shown in FIG. 8, and the inner peripheral surface of each nut receiving hole 28 is in contact with each nut 31b. It is regulated by being in contact with the crane girder 4 and the crane saddle 6 to prevent contact. The swing support mechanism is such that the crane saddle 6 is positioned at the swing end position in the clockwise direction and the swing end position in the counterclockwise direction in FIG. The arrangement of the nut accommodation holes 28 is set so that all four nut accommodation holes 28 on one side are in contact with the nuts 31b substantially simultaneously.

  Next, a procedure for configuring the swing support mechanism (swing support means) will be described. First, the receiving members 25 and 26 are temporarily fixed by bolts and nuts 31 from the outside of the plate members 23 and 24 of the saddle frame 22. At this time, the bolts 31 a are inserted from the inside of the saddle frame 22 into the bolt insertion holes 32 of the plate members 23 and 24 and the bolt insertion holes 29 of the receiving members 25 and 26. Next, the swing shafts 27 of the swing-side support members 20 and 21 are fitted into the shaft holes 30 of the receiving members 25 and 26, respectively. In this state, the entire crane saddle 6 is suspended by lifting means such as a crane, and the crane saddle 6 is positioned with respect to the crane girder 4 by measuring the crane span, the diagonal dimension of the crane saddle, and the like. After the positioning is completed, the swing side support members 20 and 21 are temporarily fixed (welded) to the upper surface of the crane girder 4. After completing the temporary fixing, all the bolts and nuts 31 are once removed, and the crane girder 4 and the crane saddle 6 are separated. Then, after each receiving member 25, 26 is separated from each swing side support member 20, 21, each swing side support member 20, 21 is welded to the crane girder 4 all around.

  Next, the shaft holes 30 of the receiving members 25 and 26 are fitted again to the swing shafts 27 of the swing-side support members 20 and 21. At this time, it is desirable to apply lubricating oil such as grease to the outer peripheral portion of each swing shaft 27. Then, the crane saddle 6 suspended by lifting means such as a crane is inserted between the receiving members 25 and 26 from above. Then, the bolt insertion holes 32 of the plate members 23 and 24 of the saddle frame 22 and the respective bolt insertion holes 29 of the receiving members 25 and 26 are aligned, and the saddle frame 22 and the receiving members 25 and 26 are connected to each other. This is fixed with bolts and nuts 31. Also here, each bolt 31a is inserted from the inside of the saddle frame 22 into each bolt insertion hole 32 of each plate 23, 24 and each bolt insertion hole 29 of each receiving member 25, 26, and each nut 31b is It accommodates in each nut accommodation hole 28 which each rocking | swiveling side support member 20 and 21 opposes.

This embodiment has the following effects.
In the suspended overhead crane 1, one side (left side) of the crane girder 4 is supported by one crane saddle 5 via a fixed support mechanism (fixed support means), and the other side (right side) of the crane girder 4 is swung. It is supported by the other crane saddle 6 via a dynamic support mechanism (swing support means).
Accordingly, in the suspended overhead crane 1, since the crane saddle 6 is supported so as to be swingable with respect to the crane girder 4, irregularities caused in the pair of traveling rails 2 and 3 due to external factors such as ground subsidence are prevented. Therefore, stable traveling of the crane 1 is ensured. Furthermore, compared to the conventional crane 41 (see FIGS. 13 and 14), the dimensional accuracy of the crane girder 4, the mounting accuracy between the crane girder 4 and each crane saddle 5, 6, and the wheels in each crane saddle 5, 6 Since it is not necessary to strictly manage the mounting accuracy of 11 and 12, the manufacturing cost can be reduced.
Further, the suspended overhead crane 1 has a rotating shaft formed by the swing shaft 27 and the shaft hole 30 of the swing support mechanism disposed on both the left and right sides of the traveling rail 3, so that it rotates below the crane saddle. Compared to a conventional suspended overhead crane (see Patent Document 1) including a joint mechanism in which a shaft is disposed, the overall height of the crane can be made smaller. Thereby, this suspension type overhead crane 1 can set a lift higher, and can expand a cargo handling range.

In addition, embodiment is not limited above, For example, you may comprise as follows.
(Other embodiment 1)
As shown in FIG. 9, a suspended overhead crane so that the left and right sides of the crane girder 4 are swingably supported by a pair of crane saddles 5 and 6 via a swing support mechanism (swing support means). 1 may be configured.
In this case, in addition to the effect exhibited by the suspended overhead crane 1 of the present embodiment, as shown in FIG. 10, the crane girder 4 is swung around the rotating shafts arranged on the left and right sides of the traveling rails 2 and 3. By moving the load, the load placed with being biased in the front-rear direction (crane traveling direction) with respect to the position directly below the crane girder 4 can be wound up. Moreover, generation | occurrence | production of the torsional stress which acts on the joint part of the crane girder 4 and the crane girder 4 and the crane saddles 5 and 6 can be prevented. Furthermore, the winding wire can be prevented from being rolled up by the hoisting machine 16 being pulled horizontally.

(Other embodiment 2)
As shown in FIG. 11, each crane saddle 5 is suspended by three traveling rails 2, 33, 3 that are suspended in parallel to each other and suspended on the traveling overhead crane 1, 33, 3. At least one crane saddle 5 out of 34, 6 fixes and supports the crane girder 4 via a fixed support mechanism (fixed support means), and the remaining crane saddles (6 and 34) support a swing support mechanism (swing support). The suspended overhead crane 1 may be configured to support the crane girder 4 through the means) so as to be swingable.
In this case, in addition to the effect which the suspension type overhead crane 1 of this embodiment shows, there exists an effect that the suspension type overhead crane 1 can be easily made to correspond to a long span. In the second embodiment, a suspended overhead crane with a three-point support is disclosed. However, if at least one support mechanism is a fixed support mechanism and the other support mechanism is a swing support mechanism, the three-point support is supported. The present invention can also be applied to the above suspended overhead crane.

(Other embodiment 3)
In another embodiment 2, the crane girder 4 is swingably supported by the crane saddles 5, 34, 6 traveling on the traveling rails 2, 33, 3 via a swing support mechanism (swing support means). The suspended overhead crane 1 may be configured as described above.
In this case, in addition to the effect which the suspension type overhead crane 1 of this embodiment shows, the suspension type overhead crane 1 which has the effect which the suspension type overhead crane 1 of other Embodiment 1 and 2 has also can be provided.

(Other embodiment 4)
In the suspended overhead crane 1 according to this embodiment or the other embodiments 1 to 3, a saddle accommodating portion 35 is provided at an attachment site of each crane saddle attached to the upper surface of the crane girder 4, and each saddle accommodating portion 35 is provided with each crane saddle. The suspended overhead crane 1 may be configured so as to accommodate.
In this case, the overall height of the crane can be reduced as compared with the suspended overhead crane 1 of this embodiment and the other embodiments 1 to 3. Thereby, it becomes possible to set a lift higher, and it can expand a cargo handling range more.

It is a front view (DD arrow view in FIG. 2) of this suspension type overhead crane. It is a top view of this suspension type overhead crane. It is the A section enlarged view in FIG. It is the B section enlarged view in FIG. It is CC arrow line view in FIG. It is a figure of the single-piece | unit of the rocking | swiveling side support member of this embodiment, (a) is a front view, (b) is a top view. It is a figure of the simple substance of a receiving member of this embodiment, (a) is a front view and (b) is a top view. It is explanatory drawing of this embodiment, Comprising: It is a figure which shows the state (state in which the rocking | fluctuation operation | movement of the crane girder was controlled) which the inner peripheral surface of the nut accommodation hole contact | abutted to the nut. It is a front view of other Embodiment 1. It is explanatory drawing of other Embodiment 1, Comprising: It is a figure which shows the case where the load loaded biased in the front-back direction (crane traveling direction) with respect to the direct lower side of a crane girder is wound up. It is a front view of other Embodiment 2. It is a front view of other Embodiment 4. It is a front view which shows the coupling | bond part of the crane girder and crane saddle of the conventional one suspension type overhead crane. It is a top view which shows the coupling | bond part of the crane girder and crane saddle of the conventional one suspension type overhead crane.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suspended overhead crane, 2, 3 Travel rail, 4 Crane girder, 5, 6 Crane saddle, 20, 21 Swing side support member, 25, 26 Receiving member, 27 Swing shaft, 28 Nut accommodation hole, 31b Nut

Claims (7)

  In a suspended overhead crane suspended from a pair of traveling rails installed in parallel near the ceiling of the building, a pair of crane saddles traveling on each traveling rail and a pair of the traveling rails are spanned and one side is fixedly supported A crane girder supported by one of the crane saddles and supported by the other crane saddle via the swing support means so as to be swingable. The suspended overhead crane is characterized in that rotating shafts are arranged on both sides of the traveling rail on which the other crane saddle travels.   In a suspended overhead crane suspended by a pair of traveling rails installed in parallel near the ceiling of the building, a pair of crane saddles traveling on each traveling rail and a pair of longitudinal rails spanned between the pair of traveling rails A crane girder that is swingably supported by each crane saddle via a swing support means, and wherein the traveling rail on which the crane saddle that the swing saddle travels is supported by a swinging shaft of the swing support means. Suspended overhead crane, which is arranged on both sides of the crane.   In a suspended overhead crane suspended by at least three traveling rails installed in parallel near the ceiling of a building, a plurality of crane saddles that are provided opposite to each traveling rail and travel on the traveling rails facing each other And a crane girder supported by at least one of the crane saddles by fixed support means and supported by the remaining crane saddles via swing support means so as to be swingable between the traveling rails. The suspended overhead crane is characterized in that the swinging rotating shaft of the swinging support means is disposed on both sides of the traveling rail on which the crane saddle is traveling.   In a suspended overhead crane suspended by at least three traveling rails installed in parallel near the ceiling of a building, a plurality of crane saddles that are provided opposite to each traveling rail and travel on the traveling rails facing each other A crane girder spanned between the traveling rails and supported by each crane saddle via a swing support means, and a rotating shaft on which the swing support means swings, A suspended overhead crane, wherein the crane saddle is disposed on both sides of the traveling rail on which the crane saddle travels.   The swing support means includes a pair of swing side support members that are erected on the upper surface of the crane girder and are opposed to each other across the crane saddle, and each swing side support member and each swing side The suspended overhead crane according to any one of claims 1 to 4, wherein each side surface of the crane saddle facing the support member is supported via a swinging rotating shaft.   The swinging shaft of the swinging support means is provided with a pair of receiving members disposed on both side surfaces of the crane saddle so as to face each swinging side support member. The swinging shaft protrudes from one of the moving side support members, and the other is formed with a shaft hole into which the swinging shaft is slidably fitted. The suspended overhead crane according to any one of 5.   The suspended overhead crane according to any one of claims 1 to 6, wherein a saddle accommodating portion for accommodating each crane saddle is provided on an upper surface of the crane girder.

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