JP2014037287A - Crane apparatus and modification method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crane apparatus capable of sufficiently obtaining a vibration control effect by a simple configuration, and further to provide a modification method for the crane apparatus.SOLUTION: A crane apparatus 1 that can travel on travel rails 7 and performs lifting of a load comprises: a crane main body 2 for performing the lifting of the load; travel portions that have wheels for traveling on the travel rails 7 and are mounted to the crane main body 2 in a relatively movable manner in an X-axis direction; and spring members 16 each of which has the other end supported by one of the travel rails 7 in a relatively non-movable manner in the X-axis direction while having one end supported by the crane main body 2 in the relatively non-movable manner in the X-axis direction and can be elastically subjected to deflection deformation in response to relative movement of the crane main body 2 in the X-axis direction with respect to the travel portions.

Description

  The present invention relates to a crane device and a method for repairing a crane device.

  Crane devices used for lifting loads (lifting or hanging) are installed outdoors (for example, in harbor quay or container yard) or indoors (for example, in a building such as a factory). A traveling crane apparatus that lifts and conveys a load while traveling is widely used. This traveling crane apparatus includes a crane main body that suspends a load, and a traveling unit that supports the crane main body and travels on a traveling rail.

  Such a traveling crane device requires a structure that prevents the traveling unit from derailing from the traveling rail or the crane body from being damaged due to excessive swinging of the crane body when an earthquake occurs. Therefore, in the past, an excessive load was applied by reducing the excessive load that acts on the traveling unit during an earthquake by providing a seismic isolation unit between the traveling unit and the crane body. Has been proposed (see, for example, Patent Documents 1 and 2). Here, the seismic isolation unit includes a slide mechanism that allows the crane body to move in the horizontal direction relative to the traveling unit, a restoring force mechanism that applies a restoring force to the crane body that has moved relative to the traveling unit, and a crane. A damping mechanism for damping the vibration of the main body is provided.

Moreover, the indoor traveling crane apparatus (overhead crane) is provided so as to be bridged on a pair of traveling rails fixed to the left and right ends of the building in the vicinity of the ceiling of the building (see, for example, Patent Document 3). Such an overhead crane is configured such that wheels capable of rolling on each traveling rail are provided as the traveling units at both ends of the crane body spanned between the left and right ends of the building. By placing on a pair of traveling rails, traveling in the extending direction of the traveling rails is possible.
And the overhead crane of patent document 3 thinks that each wheel (traveling part) is pinched | interposed with the auxiliary rail fixed to the ceiling vicinity of a building with a traveling rail so that it may not take off from a traveling rail at the time of the occurrence of an earthquake. It has been.

Japanese Patent No. 3993570 Japanese Patent Laid-Open No. 2000-203786 JP 2007-269428 A

However, when the traveling crane device is an overhead crane provided near the ceiling in the building, the height dimension from the traveling rail to the ceiling of the building is limited, so the crane body is jacked up, etc. It is difficult to install the seismic isolation unit described in Patent Literatures 1 and 2 between the main body and the traveling unit, that is, to repair the crane device.
Even if the conventional seismic isolation unit can be installed on an overhead crane, the space on the running rail is limited by the inner surface of the building (ceiling and side walls). It may be difficult to ensure a sufficient amount (for example, a length by which a spring or a damper expands and contracts), that is, there is a possibility that the function of the seismic isolation unit cannot be sufficiently exhibited.

  Furthermore, as in Patent Document 3, in order to fix the auxiliary rail to the building, the building itself needs to be repaired, which makes the repair large and troublesome. In addition, there is a problem that the construction cost for renovation becomes high.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a crane apparatus and a crane apparatus repair method capable of sufficiently obtaining a vibration damping effect with a simple configuration.

In order to solve the above problems, the present invention employs the following means.
That is, a crane device according to the present invention is capable of traveling on a traveling rail and has a crane body that suspends a load and a wheel that travels on the traveling rail in the crane device that suspends a load, A traveling unit attached to the crane body so as to be relatively movable in the direction of the rotation axis of the wheel, and one end supported by the crane body so as not to be relatively movable in the direction of the rotation axis, and the other end being the traveling unit or And a spring member that is supported by the traveling rail so as not to be relatively movable in the direction of the rotation axis, and that can be elastically bent and deformed in accordance with the relative movement of the crane body in the direction of the rotation axis with respect to the traveling portion. And

  According to such a crane device, for example, when an earthquake or the like occurs and the excitation force caused thereby acts on the crane device, the traveling unit moves relative to the crane body in the direction of the rotation axis of the wheel. At this time, relative displacement occurs between the one end and the other end of the spring member in the direction of the rotation axis of the wheel, but the restoring force is applied to the crane body so that the restoring force is suppressed by the elastic deformation of the spring member. Works.

  In addition, the spring member is laminated in the direction of the rotation axis, a leaf spring that can be elastically bent and deformed according to relative movement of the crane body in the direction of the rotation axis with respect to the traveling portion, When the leaf spring is bent and deformed, the leaf spring may have a sliding body that frictionally slides on the leaf spring.

  When an excitation force acts on such a spring member, the leaf spring is elastically bent and deformed. Furthermore, the vibration generated by the excitation force can be attenuated by the friction between the leaf spring and the sliding body as the leaf spring is deformed. Therefore, it is possible to attenuate vibrations caused by an earthquake or the like more effectively.

  Furthermore, the spring member may be plastically deformed when a predetermined or greater excitation force is applied.

  Such a spring member is first elastically bent and deformed when an excitation force of less than a predetermined value is applied, and then plastically deformed when an excitation force of a predetermined value or more is applied. Even when a force is applied, vibration energy due to the excitation force can be absorbed and vibration can be attenuated more effectively.

  The spring member may further include a guide roller that is provided at the other end and sandwiches the travel rail from the width direction of the travel rail.

  With such a guide roller, the spring member can receive a reaction force from the traveling rail to apply a restoring force, and even if the spring member comes into contact with the traveling rail, it does not become resistance during traveling, and the crane device can be smoothly operated. Driving is possible.

  The crane device refurbishing method according to the present invention includes a crane body that hangs a load, and a traveling unit that has a wheel that travels on a traveling rail and is attached to the crane body. A method for refurbishing a crane device, the step of attaching the traveling unit and the crane body so as to be relatively movable in the direction of the rotation axis of the wheel, and the rotation between the traveling unit and the crane body. One end of a spring member that can be elastically bent and deformed in response to relative movement in the axial direction is installed in the crane body so as to be supported so as not to be relatively movable in the rotational axis direction, and the other end is disposed in the rotational axis direction. And a step of installing on the traveling part or the traveling rail so as to be supported so as not to be relatively movable.

  According to such a repair method for a crane device, it is possible to add a vibration damping structure while minimizing the lift amount due to jack-up of the crane device. That is, even if there is a restriction on the space on the traveling rail, the crane device can be easily repaired, so that it is possible to obtain a damping effect using a spring member with a simple structure while suppressing the cost required for the repair work. it can.

  According to the crane device and the crane device repair method of the present invention, a vibration damping effect can be sufficiently obtained by using a spring member having a simple structure.

It is a schematic front view which shows the crane apparatus which concerns on 1st embodiment of this invention. It is an enlarged side view which shows the principal part of the crane apparatus which concerns on 1st embodiment of this invention. It is the A arrow directional view of FIG. 2 regarding the crane apparatus which concerns on 1st embodiment of this invention. The crane apparatus which concerns on 1st embodiment of this invention WHEREIN: It is A arrow line view of FIG. 2, Comprising: It is a figure which shows the state which the external force to one side of the rotating shaft direction (X-axis direction) of a wheel acted on the traveling part. is there. The crane apparatus which concerns on 1st embodiment of this invention is an A arrow line view of FIG. 2, Comprising: It is a figure which shows the state which the external force to the other of the rotating shaft direction of a wheel acted on the traveling part. It is a figure which shows the spring member periphery of the crane apparatus which concerns on 2nd embodiment of this invention, Comprising: It is the figure which looked at the crane apparatus from the same position as A arrow of FIG. It is a figure which shows the spring member periphery of the crane apparatus which concerns on 2nd embodiment of this invention, Comprising: The state to which the external force to one side of the rotating shaft direction of a wheel acted on the traveling part is shown. It is an enlarged side view which shows the principal part of the crane apparatus which concerns on 3rd embodiment of this invention. It is a figure which shows the spring member periphery of the crane apparatus which concerns on 3rd embodiment of this invention, Comprising: The B arrow directional view of FIG. 8 is shown. It is a figure which shows the spring member periphery of the crane apparatus which concerns on 3rd embodiment of this invention, Comprising: (a) shows CC cross section of FIG. 8, (b) shows DD cross section of FIG. It is a figure which shows the spring member periphery of the crane apparatus which concerns on 4th embodiment of this invention, Comprising: It is the figure which looked at the crane apparatus from the same position as A arrow of FIG. It is a figure which shows the crane apparatus which concerns on 5th embodiment of this invention, Comprising: It is the figure which looked at the crane apparatus from the same position as A arrow of FIG. It is a figure which shows the crane apparatus which concerns on the modification of 5th embodiment of this invention, Comprising: It is the figure which looked at the crane apparatus from the same position as A arrow of FIG.

[First embodiment]
Hereinafter, the crane apparatus 1 which concerns on 1st embodiment of this invention is demonstrated.
The crane apparatus 1 of this embodiment is an indoor overhead crane arranged near the ceiling 101 in the building 100 as shown in FIG.
That is, a pair of traveling rails 7 extending horizontally in the Y-axis direction (front-rear direction) are provided on both sides (left and right sides) of the building 100 in the vicinity of the ceiling 101 in the X-axis direction. The crane device 1 according to the present embodiment is configured to be able to travel on the pair of traveling rails 7 and to suspend the load. 1 to 13, the Z-axis direction indicates the vertical direction.

  As shown in FIGS. 1 and 2, the crane apparatus 1 includes a crane main body 2 that hangs a load, a traveling unit 12 that is attached to the crane main body 2, and one end that is attached to the crane main body 2. And a spring member 16 extending downward.

  The crane body 2 includes a trolley 4, a crane girder 6 on which the trolley 4 is placed, and a suspension means 3 provided on the trolley 4.

  The trolley 4 has a trolley wheel 5 that rolls on the crane girder 6 in the extending direction (X-axis direction), and is thereby movable on the crane girder 6 in the X-axis direction.

  The suspension means 3 is provided on the trolley 4 and is constructed by suspending a hanging load hook 3a with a wire 3b that can be wound up.

  The crane girder 6 includes a girder body 8 that extends in the X-axis direction and spans the left and right sides of the building 100, a trolley travel rail 102 that is provided on the girder body 8 and extends in the X-axis direction, A yoke 9 is provided on both left and right sides of the main body 8 and is connected to the traveling portion 12.

  Each yoke 9 is arranged to support the girder body 8 from the lower side in the Z-axis direction on both sides in the X-axis direction of the girder body 8 and is connected to the girder body 8 by yoke pins 10 extending in the X-axis direction. ing.

  As shown in FIGS. 1 and 2, a plurality (two in the illustrated example) of traveling parts 12 are arranged in the Y-axis direction on the lower side of each yoke 9 in the Z-axis direction. Each traveling unit 12 includes a main body portion 13 attached to the lower side of the yoke 9 by a track pin 14 extending in the X-axis direction, and a wheel 15 provided on the main body portion 13 and rolling on the trolley traveling rail 102. ing.

  As shown in FIGS. 3B, 4B, and 5B, the main body 13 is moved relative to the yoke 9 by the track pin 14 in the X-axis direction (the rotational axis direction of the wheel 15). Connected as possible. More specifically, the main body 13 is a pair of plate-like members that are supported at both ends in the X-axis direction by the track pins 14 on the inner side in the lower X-axis direction of the yoke 9 and project downward. Wheels 15 are provided so as to be sandwiched between the pair of plate-like members. That is, the main body 13 is attached so as to be covered from both sides in the X-axis direction by the yoke 9, and moves relative to the yoke 9 in the X-axis direction within the range of the inside of the yoke 9. Slide between.

  And by being comprised as mentioned above, the crane main body 2 can be moved to a Y-axis direction in the state spanned on the pair of traveling rail 7 by the traveling part 12.

  As shown in FIGS. 2 to 5, one end of the spring member 16 is supported by attachment members 17 attached to the respective side end portions of the yoke 9 in the crane body 2 (both end portions in the Y-axis direction of the yoke 9). , A member that forms an elastically deformable rod shape (for example, a round bar, a square bar, etc.) that extends downward in the Z-axis direction. More specifically, the mounting member 17 has a plate-like pedestal portion 18 fixed to each side end portion of the yoke 9 and a support portion 19 protruding from the pedestal portion 18 in the Y-axis direction. One end of the spring member 16 is supported so as to penetrate through in the Z-axis direction. In the present embodiment, two support portions 19 are provided at intervals in the Z-axis direction.

  The other end of the spring member 16 is disposed at the same position in the Z-axis direction as the position where the travel rail 7 is installed, and at each side end of the yoke 9 so as to sandwich the travel rail 7 from both sides in the X-axis direction. A pair is provided. Further, when no external force is applied to the traveling unit 12 from the X-axis direction, a gap is provided between the traveling rail 7 and the spring member 16, and the traveling rail 7 and the spring member 16 are not in contact with each other. . Thus, the spring member 16 is supported so as not to move relative to the crane body 2 and the traveling rail 7 in the X-axis direction.

  In such a crane apparatus 1, as shown in FIG. 3, for example, an earthquake or the like occurs in an initial state in which the crane apparatus 1 is arranged on the trolley traveling rail 102 and no external force is applied to the traveling unit 12. When the excitation force is applied, a force in the X-axis direction acts on the yoke 9 as shown in FIGS. 4 and 5, and the yoke 9 (crane body 2) moves to one or the other in the X-axis direction. At this time, the traveling unit 12 and the trolley traveling rail 102 do not move, and the crane body 2 and the traveling unit 12 and the trolley traveling rail 102 relatively move in the X-axis direction.

More specifically, as shown in FIG. 4, when the yoke 9 moves to one side in the X-axis direction (right side in FIG. 4), the spring member 16 comes into contact with the traveling rail 7 from the X-axis direction and moves in the X-axis direction. The other side (left side of FIG. 4) is elastically bent and deformed. Further, as shown in FIG. 5, when the yoke 9 moves to the other side in the X-axis direction (the left side in FIG. 5), the spring member 16 comes into contact with the traveling rail 7 from the X-axis direction and the one in the X-axis direction (see FIG. 5). 4 right side of the sheet of FIG.
Accordingly, a restoring force acts on the crane body 2 via the yoke 9 so as to suppress the displacement of the yoke 9 in the X-axis direction, and the vibration caused by an earthquake or the like due to the elastic deformation of the spring member 16 is lengthened. can do.

  As described above, according to the crane device 1 of the present embodiment, by providing the spring member 16, it is possible to reduce the response to an excitation force due to an earthquake or the like while suppressing the cost with a simple configuration. In other words, it is possible to prevent the crane device 1 from dropping due to a sufficient vibration damping function and the wheels 15 being detached from the traveling rail 7 due to an excitation force caused by an earthquake or the like.

Next, the repair method which applies the spring member 16 in the crane apparatus 1 of the above-mentioned embodiment to the existing crane apparatus which is not provided with the spring member 16 is demonstrated.
The repair method of the crane apparatus 1 includes an attaching portion repairing step for attaching the traveling unit 12 to the crane body 2 so as to be relatively movable in the X-axis direction, and a spring member 16 for the yoke 9 of the crane body 2 and the Y axis of the traveling unit 12. And a spring member additional installation step installed at the side end in the direction.

  First, an attachment part repair process is performed. That is, the traveling unit 12 and the crane main body 2 are separated from each other, and the crane main body 2 is jacked up to separate them in the Z-axis direction. 3, 4, and 5, the track pin 14 is inserted into the travel unit 12 so that the yoke 9 and the travel unit 12 can move relative to each other in the X-axis direction. Both ends in the X-axis direction are fixed to the yoke 9.

  Next, a spring member additional installation step is executed. That is, the attachment members 17 are installed on both sides of the yoke 9 and the main body 13 of the traveling unit 12 in the Y-axis direction. In each of the attachment members 17, the spring member 16 is installed so as to penetrate the support portion 19 in the Z-axis direction.

  By such a crane device renovation method, the lift amount when jacking up the crane device is minimized, that is, the crane body 2 is simply jacked up from the traveling unit 12 to the extent that the track pin 14 can be installed. A damping structure can be added. That is, even if there is a restriction on the space on the traveling rail, the crane device can be easily repaired, so that the vibration control effect can be obtained by using the spring member 16 having a simple structure while suppressing the cost required for the repair work. Can do.

  In addition, in this embodiment, you may perform any of an attachment part repair process and a spring member additional installation process previously.

[Second Embodiment]
Next, the crane apparatus 21 which concerns on 2nd embodiment of this invention is demonstrated.
In addition, the same code | symbol is attached | subjected to the same component as 1st embodiment, and detailed description is abbreviate | omitted.
In this embodiment, the spring member 26 is different from that of the first embodiment.
As shown in FIG. 6, the spring member 26 has one end on the attachment member 17 attached to each side end of the yoke 9 (both ends of the yoke 9 in the Y-axis direction) in the crane body 2 as in the first embodiment. Are a pair of members that are supported and extend downward (downward in the Z-axis direction).

  Each spring member 26 includes two leaf springs 22 that can be elastically bent and deformed in the X-axis direction, and a sliding body 23 sandwiched by the leaf springs 22 from both sides in the X-axis direction. ing. The sliding body 23 is made of a material capable of generating a frictional force with the leaf spring 22.

  Further, the spring member 26 is supported in a state of being completely fixed to the support portion 29A on the upper side in the Z-axis direction among the support portions 29 in the mounting member 27 similar to the mounting member 17, and is supported on the lower side in the Z-axis direction. In the portion 29B, a through hole 29Ba is formed in a portion through which the spring member 26 penetrates, and the spring member 26 is not completely fixed to the support portion 29B, and the leaf spring 22 is formed on the inner peripheral surface of the through hole 29Ba. They are in contact.

  Then, as shown in FIG. 7, when a force is applied to the yoke 9 from the X-axis direction and the yoke 9 moves in the X-axis direction, that is, when relative movement occurs between the running portion 12 and the yoke 9, When the spring 22 is bent and deformed in the X-axis direction, a relative displacement in the Z-axis direction occurs between the leaf spring 22 and the sliding body 23, and frictional sliding is possible between the leaf spring 22 and the sliding body 23. It has become.

  In such a crane device 21, when an excitation force is applied and the yoke 9 (crane body 2) moves in the X-axis direction, the spring member 16 is moved to the trolley travel rail 102 in the X-axis as in the first embodiment. It contacts from the direction and elastically bends and deforms.

  At this time, in this embodiment, the leaf spring 22 and the sliding body 23 are moved independently in the Z-axis direction and the X-axis direction, with the supporting portion 29A above the Z-axis serving as a fulcrum, and the leaf spring 22 and the sliding body 23 move independently from each other. It will rub. That is, vibration can be attenuated by consuming the exciting force as a frictional force.

  According to the crane device 21 of the present embodiment, the response to the excitation force is reduced by the elastic deformation of the spring member 26, and the vibration damping effect by the frictional sliding is obtained, so that the vibration suppression effect can be further improved.

  Note that the surface of the sliding body 23 may be roughened, or the contact surface of the leaf spring 22 with the sliding body 23 may be roughened. In this case, a further vibration damping effect can be expected.

  Further, as described in the first embodiment, the above-described crane device repair method is executed using the spring member 26 in the crane device 21 of the present embodiment, and the structure is simple while suppressing the cost required for the repair work. A vibration damping effect can be obtained using the spring member 26.

[Third embodiment]
Next, the crane apparatus 31 which concerns on 3rd embodiment of this invention is demonstrated.
In addition, the same code | symbol is attached | subjected to the same component as 1st embodiment and 2nd embodiment, and detailed description is abbreviate | omitted.
In this embodiment, the attachment position of the spring member 36 is different from the first embodiment and the second embodiment.

  As shown in FIG. 8, the spring member 36 is supported at one end by attachment members 33 attached to the side end portions of the yoke 9 in the crane main body 2 (both end portions in the Y-axis direction of the yoke 9), and the lower side ( A rod-like shape (for example, a round bar) that extends toward the lower side in the Z-axis direction and that is supported at the other end by an attachment member 37 that is attached to each side end of the traveling unit 12 (an end in the Y-axis direction of the traveling unit 12). , A square bar, etc.).

  The spring member 36 is also provided at the end of each traveling unit 12 on the opposite side in the Y-axis direction. One end is supported by the spring member fixing plate 32 provided inside the yoke 9 and the other end. Is supported by an attachment member 37 attached to each side end of the traveling portion 12.

  Therefore, in the present embodiment, the spring members 36 are disposed at both end portions in the Y-axis direction of each traveling unit 12, and four spring members 36 are provided in each yoke 9.

  More specifically, each of the spring members 36 includes a mounting member 37 in the traveling portion 12, a plate-like pedestal portion 38 fixed to the side end portion of the main body portion 13, and the pedestal portion 38 in the Y-axis direction. And the other end of the spring member 36 is supported so as to penetrate the support portion 39 in the Z-axis direction. In the present embodiment, two support portions 39 are provided at intervals in the Z-axis direction.

  The attachment member 33 in the yoke 9 has a plate-like pedestal portion 34 fixed to the side end of the traveling portion 12 and a support portion 35 protruding from the pedestal portion 34 in the Y-axis direction. One end of the spring member 36 is supported so as to penetrate 35 in the Z-axis direction.

  Furthermore, as shown in FIG. 9, the spring member 36 is provided at a position that is exactly the center of the main body 13 of the traveling unit 12 and the yoke 9 in the X-axis direction.

  Further, the spring member 36 is supported in a state of being completely fixed to the support portion 39B below the Z-axis direction in the support portion 39 of the mounting member 37, and as shown in FIG. In the support portion 39A, a through hole 39Aa is formed in a portion through which the spring member 26 passes, and the spring member 36 is not completely fixed to the support portion 39A. The through hole 39Aa is formed with a larger opening than the outer diameter of the spring member 36 at the upper opening and the lower opening in the Z-axis direction, and the inner diameter at the intermediate portion of these openings in the Z-axis direction is the spring member 36. The spring member 36 is in contact with a part of the inner peripheral surface of the through hole 39Aa in the Z-axis direction.

  Although not shown in detail, a through hole 35a is formed in the support portion 35 of the mounting member 33 attached to the yoke 9 in the same manner as the support portion 39A, and the spring member 36 is completely attached to the support portion 35. It is not fixed. Further, the through hole 32 a is also formed in the spring member fixing plate 32 inside the yoke 9, and the spring member 36 is not completely fixed to the spring member fixing plate 32. The through holes 32a and 35a are also formed with a larger diameter than the outer diameter of the spring member 36 at the upper and lower openings in the Z-axis direction, and the Z-axis on the inner peripheral surface of the through holes 32a and 35a. The spring member 36 is in contact with a part of the direction.

  The inner peripheral surfaces of the through holes 32a, 35a, 39Aa are curved surfaces in which the upper opening and the lower opening in the Z-axis direction are smoothly connected.

  In this way, the spring member 36 can be bent and deformed in the X-axis direction with the support portion 39B of the attachment member 37 in the main body portion 13 of the traveling portion 12 as a fulcrum.

  In such a crane apparatus 31, for example, when an earthquake or the like occurs and an excitation force is applied, a force in the X-axis direction is applied to the yoke 9 (crane body 2), and the yoke 9 moves in the X-axis direction. . That is, when a relative movement occurs between the traveling portion 12 and the yoke 9, the spring member 36 is elastically bent and deformed at this time, so that the displacement of the yoke 9 in the X-axis direction is suppressed via the yoke 9. Thus, a restoring force acts on the crane body 2, and the vibration can be lengthened by elastic deformation of the spring member 36.

  Further, since the inner peripheral surfaces of the through holes 32a, 35a, and 39Aa are curved, when the spring member 36 is deformed and a reaction force acts from the through holes 32a, 35a, and 39Aa, a concentrated load is generated. Therefore, it is possible to improve the effect of suppressing the breakage of the spring member 36 due to such a load.

  According to the crane device 31 of the present embodiment, by providing the spring member 36, it is possible to reduce the response to an excitation force due to an earthquake or the like while suppressing the cost with a simple configuration, and a sufficient immunity effect can be exhibited.

  The spring member 36 of the present embodiment is completely fixed to the lower support portion 39B of the mounting member 37 on the traveling portion 12 side, and the degree of freedom of movement is provided between the spring member fixing plate 32 and the support portions 35 and 39A. I have it. Here, conversely, the spring member 36 is completely fixed to the spring member fixing plate 32 and the support portion 35 of the attachment member 33 on the yoke 9 side, and between the support portions 39A and 39B of the attachment member 37 on the traveling portion 12 side. The movement may be given a degree of freedom.

  Further, as in the present embodiment, the inner peripheral surfaces of the through holes 32a, 35a, and 39Aa may be curved surfaces in which the upper and lower openings in the Z-axis direction are smoothly connected. Basically, the upper opening and the lower opening are connected linearly.

Moreover, as demonstrated in 1st embodiment and 2nd embodiment, performing the repair method of the crane apparatus mentioned above using the spring member 36 in the crane apparatus 31 of this embodiment, suppressing the cost which repair work requires, A damping effect can be obtained using the spring member 36 having a simple structure.
In the present embodiment, it is necessary to execute the spring member additional installation step after executing the attachment portion repair step.

[Fourth embodiment]
Next, the crane apparatus 41 which concerns on 4th embodiment of this invention is demonstrated.
In addition, the same code | symbol is attached | subjected to the same component as 3rd embodiment from 1st embodiment, and detailed description is abbreviate | omitted.
In this embodiment, the spring member 46 is different from that of the first embodiment to the third embodiment on the basis of the configuration of the first embodiment.

  That is, the spring member 46 is a rod-shaped member that is supported at one end by the mounting member 17 and extends downward (downward in the Z-axis direction) as in the first embodiment.

  And in this embodiment, it is comprised so that plastic deformation is possible according to the excitation force more than the predetermined input. Specifically, the cross-sectional dimension and the length dimension are set according to the assumed excitation force, and steel materials for construction (SN material), low yield point steel materials (LY material), general steel materials (SS material), etc. Material is used.

  Here, the material used for the spring member 46 is preferably a material with a narrow yield point or a material with a guaranteed yield point.

  In such a crane device 41, the spring member 46 is first elastically deformed in a state where the exciting force is less than a predetermined value, and then plastically deformed when a larger exciting force that is greater than or equal to the predetermined value is applied. .

  According to the crane device 41 of the present embodiment, even greater vibrational energy can be absorbed by plastic deformation in addition to elastic deformation of the spring member 46, further reducing the response to the excitation force and further improving the damping effect. it can.

  Here, it is also possible to apply the spring member 46 of this embodiment to the spring member 26 of the second embodiment. That is, by configuring the leaf spring 22 and the sliding body 23 with a shape and material that can be plastically deformed, it is possible to reduce the response to a larger earthquake. Similarly, it can be applied to the spring member 36 of the third embodiment.

  Further, as described in the first to third embodiments, the above-described crane device repair method is executed using the spring member 46 in the crane device 41 of the present embodiment, and the cost required for the repair work is suppressed. A damping effect can be obtained using the spring member 46 having a simple structure.

[Fifth embodiment]
Next, the crane apparatus 51 which concerns on 5th embodiment of this invention is demonstrated.
In addition, the same code | symbol is attached | subjected to the same component as 4th embodiment from 1st embodiment, and detailed description is abbreviate | omitted.
This embodiment is different from the first embodiment to the fourth embodiment in that the spring member 56 further includes a guide roller 57 based on the configuration of the first embodiment.

  As shown in FIG. 12, each spring member 56 is provided at an end portion below the Z-axis direction so as to be rotatable about the Z-axis direction, and a pair of guide rollers 57 that sandwich the traveling rail 7 from both sides in the X-axis direction. have. And in the state where the excitation force by an earthquake etc. is not acting, the outer peripheral surface of the guide roller 57 is contacting the traveling rail 7. FIG.

  Here, during normal operation of the trolley 4 (during normal operation of the crane device 51), the spring member 56 is bent and deformed only by a minute amount that does not hinder cargo handling, and an excitation force due to an earthquake or the like is applied. It is preferable to select dimensions and materials so that the spring constant can be greatly deformed.

  In such a crane device 51, the guide roller 57 guides the traveling of the crane device 51, so that the spring member 56 does not have resistance during traveling, and the crane device 51 can smoothly travel.

  Further, by providing such a guide roller 57, there is no gap between the guide roller 57 and the traveling rail 7 during traveling of the crane device 51, so when an excitation force is applied. That is, the spring member 56 can be elastically deformed (and plastically deformed) immediately, and vibration can be attenuated.

  According to the crane device 51 of the present embodiment, the vibration suppression effect by the spring member 56 can be obtained without impairing the smoothness of travel by the spring member 56.

  Such a guide roller 57 can also be applied to the spring member 26 of the second embodiment. Specifically, as shown in FIG. 13, each spring member 66 has two leaf springs 62 and a sliding body 63 sandwiched between them. Further, the two leaf springs 62 are joined together in the lower Z-axis direction and are formed in a round bar shape, and a guide roller 57 is rotatably fitted on the outer peripheral surface thereof. The sliding body 63 has a smaller dimension in the Z-axis direction than the leaf spring 62, and when the traveling unit 12 moves relative to the crane body 2 in the X-axis direction, the sliding body 63 and the leaf spring 62 Is slidable.

  Further, as described in the first to fourth embodiments, the crane member repair method described above is executed using the spring members 56 and 66 in the crane device 51 of the present embodiment, and the cost required for the repair work is reduced. While suppressing, it is possible to obtain a damping effect using the spring members 56 and 66 having a simple structure.

  In addition, the guide roller 57 does not necessarily have to be always in contact with the traveling rail 7 during the normal operation of the trolley 4 (during normal operation of the crane device 51).

Although the embodiment of the present invention has been described in detail above, some design changes can be made without departing from the technical idea of the present invention.
For example, the relative movement between the traveling unit 12 and the crane body 2 is restricted during normal operation of the crane devices 1, 21, 31, 41, 51, and the relative movement is performed when an excitation force is applied due to an earthquake or the like. An allowable trigger mechanism may be further provided. This trigger mechanism is called a shear pin and is a rod-shaped member made of metal or the like. One end of the trigger mechanism is fixed to the crane body 2 and the other end is fixed to the traveling unit 12.
When an excitation force of a predetermined level or more is applied, the shear pin breaks and the crane body 2 and the traveling unit 12 can be freely operated, whereby the spring members 16, 26, 36, 46, 56, 66 are bent. A restoring force by deformation can be obtained. On the contrary, when the excitation force is less than a predetermined value, the shear pin does not break, so that the handling operation during normal operation is not hindered.
Such a trigger mechanism may electrically restrain and allow relative movement between the traveling unit 12 and the crane body 2.

Further, the installation positions and the installation quantities of the spring members 16, 26, 36, 46, 56, and 66 are not limited to the above-described embodiments. For example, as in the third embodiment, the spring members 16 according to the first embodiment travel each time. You may provide in the both sides of the Y-axis direction of the part 12. FIG. In the third embodiment, the spring member 36 can be installed on the main body 13 of the traveling unit 12 and the surface of the yoke 9 facing the X-axis direction.
By doing so, it is possible to attenuate vibrations acting in various directions.

  Further, the main body 13 in the traveling unit 12 moves relative to the track pin 14 while sliding, but by appropriately selecting the material of the sliding surface, the friction is promoted to further attenuate the vibration. May be. It is also possible to absorb vibration energy by using a damper in the sliding portion.

DESCRIPTION OF SYMBOLS 1 ... Crane apparatus 2 ... Crane main body 3 ... Suspension means 3a ... Hook for suspended loads 3b ... Wire 4 ... Trolley 5 ... Trolley wheel 6 ... Crane girder 7 ... Travel rail 8 ... Girder main body 9 ... Yoke 10 ... Yoke pin 12 ... Travel Part 13: Main body part 14 ... Track pin 15 ... Wheel 16 ... Spring member 17 ... Mounting member 18 ... Base part 19 ... Supporting part 21 ... Crane device 22 ... Plate spring 23 ... Slider 26 ... Spring member 27 ... Mounting member 28 ... Pedestal portion 29 (29A, 29B) ... support portion 29Ba ... through hole 31 ... crane device 32 ... spring member fixing plate 32a ... through hole 33 ... mounting member 34 ... pedestal portion 35 ... support portion 35a ... through hole 36 ... spring member 37 ... Mounting member 38 ... Pedestal part 39 (39A, 39B) ... Support part 39Aa ... Through-hole 41 ... Crane equipment 46 ... spring members 51 ... crane device 56 ... spring member 57 ... guide roller 62 ... plate spring 63 ... slider 66 ... spring member 100 ... building 101 ... ceiling 102 ... trolley running rail

Claims (5)

In a crane device that can travel on a traveling rail and hangs a load,
A crane body that hangs the load,
A traveling unit having wheels traveling on a traveling rail and attached to the crane body so as to be relatively movable in the direction of the rotation axis of the wheels;
One end is supported by the crane body so as not to be relatively movable in the direction of the rotation axis, and the other end is supported by the traveling unit or the traveling rail so as not to be relatively movable in the direction of the rotation axis. And a spring member that can be elastically bent and deformed in response to relative movement in the direction of the rotation axis. The spring member is a leaf spring that can be elastically bent and deformed in response to relative movement of the crane body in the direction of the rotation axis with respect to the traveling portion,
2. The crane according to claim 1, further comprising a sliding body that is laminated in the direction of the rotation axis and that slides frictionally with respect to the leaf spring when the leaf spring is bent and deformed. apparatus.   The crane apparatus according to claim 1, wherein the spring member is plastically deformed when an excitation force of a predetermined level or more is applied.   The crane apparatus according to any one of claims 1 to 3, wherein the spring member further includes a guide roller that is provided at the other end and sandwiches the traveling rail from a width direction of the traveling rail. . A crane body for carrying a load and a traveling unit attached to the crane body having a wheel that travels on a traveling rail, and a method for repairing a crane device for hanging a load,
Attaching the traveling unit and the crane body so as to be relatively movable in the rotation axis direction of the wheel;
The crane is supported such that one end of a spring member that can be elastically bent and deformed in accordance with relative movement between the traveling unit and the crane main body in the rotational axis direction is immovable relative to the rotational axis direction. And a step of installing the other end on the traveling unit or the traveling rail so that the other end is supported so as not to be relatively movable in the direction of the rotation axis.

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