JP4978089B2 - 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. 17 and FIG. 18 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. 17 and 18). A driving wheel 48 is provided and a pair of driven wheels 49 are provided on the other side (left side in FIGS. 17 and 18). 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 FIG. 3) formed by joining a flange member for guiding 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 irregularities in the traveling rail 42. In particular, when the traveling rail 42 is bent in the horizontal direction (the line of sight in FIG. 17), the side surface of the traveling rail 42 and the flanges of the wheels 48 and 49 provided on the crane saddle 44 come into contact with each other, so that smooth cargo handling traveling is performed. I can't.

Therefore, in Patent Document 1, the traveling rail (corresponding to the crane saddle 44) is caused to swing the crane girder in the traveling direction of the crane saddle and slide in the longitudinal direction of the crane girder so that the traveling rail is irregular. A crane that absorbs water is disclosed. In the crane of Patent Document 1, a mechanism (swing mechanism and sliding mechanism) that absorbs irregularities of the traveling rail is interposed between the lower surface of the traveling rail and the upper surface of the crane girder. There is a problem that the overall height of the crane (the vertical distance between the traverse wheel tread surface traversed by the hoist and the traveling wheel tread surface traveled by the crane and the H dimension shown in FIG. 17) increases by the size. 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.
Japanese Patent Laid-Open No. 61-7187

  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 movable support provided between a pair of crane saddles and a pair of the traveling rails, one side supported by one crane saddle by a fixed support means and the other side having a swing support mechanism and a sliding support mechanism. A crane girder that is swingably and slidably supported by the other crane saddle via a means, and the swing shaft of the swing support mechanism swings, while the other crane saddle travels. It is arrange | positioned at the both sides of a running rail, The sliding part of the said sliding support mechanism is arrange | positioned at the both sides of the said crane girder, It is characterized by the above-mentioned.

  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. It spans between a pair of crane saddles and a pair of the traveling rails, and one side is swingably supported by one crane saddle via swing support means having a swing support mechanism, and the other side swings. A crane girder supported by the other crane saddle so as to be swingable and slidable through movable support means including a dynamic support mechanism and a sliding support mechanism, and the swinging support mechanism swings. A rotating shaft is arrange | positioned at the both sides of the said traveling rail which the said crane saddle which opposes drive | works, The sliding part of the said sliding support mechanism is arrange | positioned at the both sides of the said crane girder, It is characterized by the above-mentioned.

  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 running rails facing each other, and are supported by at least one crane saddle by fixed support means, and the remaining crane saddles are slidably supported by a swing support mechanism and a slide. A crane girder supported so as to be swingable and slidable via a movable support means including a dynamic support mechanism, and spanned between the traveling rails, and a rotary shaft on which the swing support mechanism swings, The opposite crane saddles are disposed on both sides of the traveling rail, and the sliding portions of the sliding support mechanism are disposed on both sides of the crane girder. And features.

  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 opposed traveling rails, and at least one of the crane saddles is swingably supported via swing support means having a swing support mechanism. And a crane girder supported by the remaining crane saddle via a movable support means including a swing support mechanism and a slide support mechanism, and supported between the traveling rails so as to be swingable and slidable. Rotating rotary shafts of the swing support mechanism are disposed on both sides of the traveling rail on which the opposing crane saddle travels, and a sliding portion of the slide support mechanism is provided on the crane. Characterized in that it is arranged on both sides of the over da.

  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 movable support means opposes the swing support mechanism standing on the upper surface of the movable base. A rotary shaft that includes a pair of swing side support members disposed opposite to each other with the crane saddle interposed therebetween, and each swing side support member and each side surface of the crane saddle facing each swing side support member swings. It is characterized by being supported via.

  According to a sixth aspect of the present invention, in the suspended overhead crane according to the second or fourth aspect, the swing support means is the crane in which the swing support mechanism is opposed to the upright surface of the fixed base. A pair of swing-side support members disposed opposite to each other with a saddle interposed therebetween, and each swing-side support member and each side surface of the crane saddle facing each swing-side support member are interposed via a swinging rotating shaft. It is characterized by being supported.

  According to a seventh aspect of the present invention, in the suspended overhead crane according to any one of the first to sixth aspects, the rotating shafts of the swing support mechanism that swing are respectively provided on both side surfaces 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.

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 so as to be movable and slidably supported by sliding portions arranged on both sides of the crane girder.
In the suspended overhead crane according to claim 2, the crane girder is supported by one crane saddle so as to be swingable around a swinging rotary shaft disposed on both sides of the traveling rail, and by the other crane saddle. Further, it is supported so as to be swingable around a swinging rotating shaft disposed on both sides of the traveling rail, and is slidably supported by sliding portions disposed on both sides of the crane girder.
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. It is supported so as to be slidable by sliding portions arranged on both sides of the crane girder.
5. The suspended overhead crane according to claim 4, wherein the crane girder is supported by at least one crane saddle so as to be swingable about a swinging rotating shaft disposed on both sides of the traveling rail, and the remaining crane saddle. By this, it is supported so that it can rock | fluctuate around the rotating rotating shaft arrange | positioned on the both sides of a traveling rail, and is supported so that sliding is possible by the sliding part arrange | positioned on both sides of a crane girder.
In the suspended overhead crane according to claim 5, a pair of swing side support members erected on the upper surface of the movable platform and each side surface of the crane saddle facing each swing side support member swings. The crane girder is supported by the crane saddle by being connected via the rotating shaft.
In the suspended overhead crane according to claim 6, a pair of swing side support members erected on the upper surface of the fixed base and each side surface of the crane saddle facing each swing side support member swings. The crane girder is supported by the crane saddle by being connected via the rotating shaft.
In the suspended overhead crane according to claim 7, 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.

  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. Further, in the suspended overhead crane 1, the right side of the crane girder 4 is supported by one crane saddle 5 via a fixed support mechanism (fixed support means), and the left side of the crane girder 4 is a swing support mechanism and a slide. It is supported by the other crane saddle 6 via a support mechanism (movable support means) so as to be swingable and slidable.

  The suspended overhead crane 1 swings the crane saddle 6 in the front-rear direction with respect to the crane girder 4 by the swing support mechanism, and moves the crane saddle 6 in the left-right direction with respect to the crane girder 4 by the sliding support mechanism. , The irregularity of the pair of travel rails 2 and 3 is absorbed, and thereby stable travel is ensured. 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 left side surface (plate material 7) 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. 3 and 4, the crane girder 4 is formed in a box shape having a closed cross section by joining a pair of upper and lower plate members via a pair of wall plates, and the longitudinal direction of the upper and lower plate members. A pair of upper flange 15a and lower flange 15b extending in the left-right direction are formed on both sides. The suspended overhead crane 1 has a structure in which the hoisting machine 16 suspended from the trolley 14 traverses when the trolley 14 travels on the pair of lower flanges 15 b of the crane girder 4.

  As shown on the right 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 fixed base 35. As shown in FIG. 4, each of the fixed-side support members 17 and 18 is 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 right side of the crane girder 4 is supported (fixed and supported) on the crane saddle 5 via a fixed support mechanism. As shown in FIGS. 5 and 6, the swing support mechanism includes a pair of swing side support members 20, 21 that are welded to the upper surface of the movable table 36, and the 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. 7, the swing side support members 20, 21 are formed by pressing a steel plate into a substantially U-shaped cross section, and the opposing portions 20 a, 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. 8, each of the receiving members 25 and 26 is formed by joining a receiving plate 25b (26b) to the center of one side surface of a substrate 25a (26a) in which bolt insertion holes 29 are disposed 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. 9, in the swing support mechanism, the shaft holes 30 of the respective receiving members 25 and 26 are fitted to the swing shafts 27 of the swing side support members 20 and 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.

  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, the swing side support members 20 and 21 are temporarily placed on the movable table 36, and the perpendicularity of the crane saddle 6 with respect to the movable table 36 is confirmed. Then, the crane saddle 6 is positioned. After the positioning is completed, the swing side support members 20 and 21 are temporarily fixed (welded) to the upper surface of the movable table 36. After completing the temporary fixing, all the bolts and nuts 31 are once removed, and the movable base 36 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 movable base 36 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.

  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. As a result, in the suspended overhead crane 1, the left side of the crane girder 4 swings to the other crane saddle 6 via the swing support mechanism around the rotation shafts arranged on the left and right sides of the traveling rail 3. It is supported (oscillating support) as possible. Then, the swinging motion of the crane saddle 6 around the rotation axis with respect to the crane girder 4 is such that the swingable range is as shown in FIG. 10, and the inner peripheral surface of each nut receiving hole 28 contacts 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.

  As shown in FIGS. 1 and 5, in the sliding support mechanism, a pair of side plates 37 and 38 provided on the front and rear end surfaces of the movable base 36 are arranged to face each other with the upper part of the crane girder 4 interposed therebetween. . The sliding support mechanism is provided with a pair of wheels 37 a (sliding portions) that support the front upper flange 15 a of the crane girder 4 on the left and right sides of the inner surface of the side plate 37. On both sides, a pair of wheels 38a (sliding portions) that support the upper flange 15a on the rear side of the crane girder 4 are provided. The sliding support mechanism configured in this manner causes the crane saddle 6 to move to the crane girder 4 with respect to the crane girder 4 in the left-right direction (travel rails 2, 2a) by rolling the wheels 37a, 38a. 3 span direction). As a result, the suspended overhead crane 1 has a structure in which the other crane saddle 6 is supported (sliding supported) on the left side of the crane girder 4 via the sliding support mechanism so as to be slidable in the left-right direction. ing.

This embodiment has the following effects.
In the suspended overhead crane 1, one side (right 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 (left side) of the crane girder 4 is swung. The other crane saddle 6 is supported to be swingable and slidable through a dynamic support mechanism and a sliding support mechanism (movable support means).
Therefore, since the crane saddle 6 is supported so as to be swingable and slidable with respect to the crane girder 4, the suspended overhead crane 1 is generated on the pair of traveling rails 2 and 3 due to external factors such as ground subsidence. The irregularities can be absorbed, and stable traveling of the crane 1 is ensured. Furthermore, compared with the conventional crane 41 (refer FIG.17 and FIG.18), the dimensional accuracy of the crane girder 4, the mounting accuracy of the crane girder 4 and each crane saddle 5,6, and the wheel 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 rotating shafts formed by the swing shaft 27 and the shaft hole 30 of the swing support mechanism arranged on the left and right sides of the traveling rail 3 and each of the slide support mechanisms. Wheels 37a and 38a (sliding portions) are disposed on both front and rear sides of the crane girder 4, and only the movable base 36 having a small thickness is disposed between the lower surface of the crane saddle 6 and the upper surface of the crane girder 4. Therefore, compared with the conventional suspension type overhead crane (refer patent document 1) which arrange | positioned these mechanisms between the lower surface of the crane saddle and the upper surface of the crane girder, the overall height dimension of a crane can be formed small. 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)
In this embodiment, one side (right side) of the crane girder 4 is supported by one crane saddle 5 via a fixed support mechanism (fixed support means). However, as shown in FIG. The suspended overhead crane 1 may be configured such that the side is swingably supported by one crane saddle 5 via a swing support mechanism (swing support means).
In this case, in addition to the effect exhibited by the suspended overhead crane 1 of the present embodiment, as shown in FIG. 12, the entire 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. 13, the suspension saddle crane 1 is suspended by three traveling rails 2, 33, 3 that are suspended in parallel to each other and travels on each traveling rail 2, 33, 3. At least one crane saddle 5 out of 34, 6 fixedly supports the crane girder 4 via a fixed support mechanism (fixed support means), and the remaining crane saddles (6 and 34) are a swing support mechanism and a sliding support. The suspended overhead crane 1 may be configured to support the crane girder 4 so as to be swingable and slidable via a mechanism (movable support means).
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. Although the suspended overhead crane with three points is disclosed in the second embodiment, at least one support means is a fixed support means, and the other support means is a movable support means. It can also be applied to other suspension type overhead cranes.

(Other embodiment 3)
In another embodiment 2, as shown in FIG. 14, one side (right side) of the crane girder 4 is supported so as to be swingable by the crane saddle 5 via a swing support mechanism (swing support means). In addition, the suspended overhead crane 1 may be configured.
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.

  In the present embodiment, the crane girder 4 is formed in a box shape having a closed cross section. For example, a section steel such as an I-section steel (see FIG. 15) or an H-section steel may be used, as shown in FIG. As described above, the crane girder 4 may be configured by joining I-shaped steels arranged in parallel.

It is a front view (F-F arrow line view in FIG. 2) of this suspension type overhead crane. It is a top view of this suspension type overhead crane. It is an AA arrow line view in FIG. It is the C section enlarged view in FIG. It is a BB arrow line view in FIG. It is the D section enlarged 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 the EE arrow line view in FIG. 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 3. It is a figure which shows other embodiment of the crane girder. It is a figure which shows other embodiment of the crane girder. 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, 36 Movable stand, 37a, 38a Wheel

Claims (7)

  In a suspended overhead crane suspended by a pair of traveling rails installed in parallel near the ceiling of the building, the crane is installed between a pair of crane saddles traveling on each traveling rail and the pair of traveling rails, and one side is fixed. A crane that is supported by one of the crane saddles by support means and that is supported by the other crane saddle in a swingable and slidable manner via movable support means that includes a swing support mechanism and a slide support mechanism on the other side. A rotating shaft on which the swing support mechanism swings is disposed on both sides of the traveling rail on which the other crane saddle travels, and the sliding portion of the slide support mechanism includes the girder, A suspended overhead crane that is arranged on both sides of a crane girder.   In a suspended overhead crane suspended from a pair of traveling rails installed in parallel near the ceiling of a building, the crane is saddleed between a pair of crane saddles traveling on each traveling rail and the pair of traveling rails. The crane is supported by one of the crane saddles via a swing support means having a dynamic support mechanism and the other crane is provided with a movable support means having a swing support mechanism and a sliding support mechanism on the other side. A crane girder supported swingably and slidably on a saddle, and a swinging rotary shaft of the swing support mechanism is disposed on both sides of the traveling rail on which the opposing crane saddle travels. The suspension type overhead crane is characterized in that sliding portions of the sliding support mechanism are arranged on both sides of the crane girder.   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 supported by the at least one crane saddle by fixed support means and supported by the remaining crane saddle so as to be swingable and slidable through movable support means having a swing support mechanism and a slide support mechanism. A crane girder spanned between the traveling rails, and a swinging rotation shaft of the swing support mechanism is disposed on both sides of the traveling rail on which the crane saddle is traveling, and the sliding The suspension type overhead crane, wherein sliding portions of the support mechanism are arranged on both sides of the crane girder.   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 at least one of the crane saddles is swingably supported via swing support means including a swing support mechanism, and the remaining crane saddle is provided with a swing support mechanism and a sliding support mechanism. And a crane girder supported so as to be swingable and slidable via the means, and spanned between the traveling rails, and the rotating saddle of the swing support mechanism is driven by the opposing crane saddle. The suspended overhead crane, which is disposed on both sides of the traveling rail, and wherein sliding portions of the sliding support mechanism are disposed on both sides of the crane girder.   The movable support means includes a pair of swing side support members in which the swing support mechanism is disposed on the upper surface of the movable base and is opposed to each other with the opposing crane saddle interposed therebetween. The suspended overhead crane according to any one of claims 1 to 4, wherein each side surface of the crane saddle facing each swinging side support member is supported via a swinging rotating shaft. .   The swing support means includes a pair of swing side support members, the swing support mechanism standing on the upper surface of the fixed base and opposed to each other with the opposing crane saddle sandwiched therebetween. 5. The suspended overhead crane according to claim 2, wherein a member and each side surface of the crane saddle facing each swinging side support member are supported via a swinging rotating shaft.   The swinging rotation shaft of the swing support mechanism 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. 6. The suspended overhead crane according to any one of 6 above.

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