Vibration isolation device and cargo handling device

Abstract

The present invention provides a vibration isolation device and a cargo handling device that can reduce the impact on equipment. [Solution] The vibration isolation device 30 is attached to the jib mounting member 31 and includes a rotating member 32 that rotates around the jib mounting member 31. Therefore, when an impact force is generated, the rotating member 32 vibrates to rotate around the jib mounting member 31, thereby reducing the impact transmitted to the equipment 29. In addition, the rotating member 32 rotates in accordance with the angle change of the jib 3, thereby maintaining the posture of the equipment 29 relative to the suspension part 4. Furthermore, the vibration isolation device 30 includes an equipment mounting member 33 to which the equipment 29 is attached and which is attached to the rotating member 32, and which moves closer to and further away from the rotating member 32 in the vertical direction. As a result, when an impact force is generated, the equipment mounting member 33 moves vertically with the equipment 29 relative to the rotating member 32, thereby reducing the impact transmitted to the equipment 29.

Description

Technical Field

[0001] The present invention relates to a vibration isolation device and a cargo handling device.

Background Art

[0002] A cargo handling device is a device that performs cargo handling work in a cargo handling section. As such a cargo handling device, for example, a horizontal retracting unloader as described in Patent Document 1 is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Here, the cargo handling device may include a jib, a wire having a joint, and a turning sheave provided at the tip of the jib for guiding the wire. In this case, when the wire is wound up, the joint collides with the turning sheave, generating an impact force near the tip of the jib. Equipment may be provided near the tip of the jib, but the equipment may malfunction due to the impact force. On the other hand, when the equipment is not provided near the tip of the jib, for example, it becomes impossible to illuminate the vicinity of the suspension part with lighting or to confirm the vicinity of the suspension part with a camera.

[0005] An object of the present invention is to provide a vibration isolation device and a cargo handling device capable of reducing the impact on equipment.

Means for Solving the Problems

[0006] A vibration isolation device according to one aspect of the present invention is a vibration isolation device for supporting equipment installed in a cargo handling device comprising a wire having a joint, a deflection sheave for guiding the wire, and a support structure for supporting the deflection sheave, the device comprising a support structure mounting member provided on the support structure, and an equipment mounting member attached to the support structure mounting member and to which equipment is mounted, and which moves closer to and further away from the support structure mounting member in the vertical direction.

[0007] This vibration isolation device supports equipment installed in a cargo handling device that comprises a wire with a joint, a deflection sheave that guides the wire, and a support structure that supports the deflection sheave. Consequently, the equipment may be subjected to impact forces when the joint collides with the deflection sheave during wire winding. In contrast, the vibration isolation device includes an equipment mounting member to which the equipment is attached and which is mounted, and which moves closer to and further away from the support structure in the vertical direction. As a result, when an impact force occurs, the equipment mounting member moves vertically with the equipment relative to the support structure mounting member, thereby reducing the impact transmitted to the equipment. Thus, the impact on the equipment can be reduced.

[0008] The vibration isolation device may also include a rotating member, which is provided between the support structure mounting member and the equipment mounting member, and is attached to the support structure mounting member, as well as rotating around the support structure mounting member. In this case, the rotating member vibrates to rotate around the support structure mounting member when an impact force is generated, thereby reducing the impact transmitted to the equipment. Furthermore, the rotating member rotates in accordance with the angle change of the support structure, thereby maintaining the posture of the equipment relative to the suspension part.

[0009] The vibration isolation device may further include an intermediate support member provided between the rotating member and the equipment mounting member, which rotates at least around a second pivot axis that intersects the first pivot axis of the rotating member. In this case, the intermediate support member can rotate together with the equipment mounting member and the equipment at least around the second pivot axis, thereby reducing the impact on the equipment.

[0010] The vibration isolation device may further include a first damper provided between the equipment mounting member and the intermediate support member. In this case, the first damper can absorb vibrations when the equipment mounting member vibrates in such a way that it moves vertically together with the equipment. As a result, the first damper can quickly eliminate vibrations in the equipment.

[0011] The vibration isolation device may further include a second damper provided between the rotating member and the intermediate support member. In this case, the second damper can absorb vibrations when the intermediate support member vibrates in such a way that it rotates together with the equipment mounting member and the equipment. As a result, the second damper can quickly eliminate vibrations in the equipment.

[0012] The stroke of the first damper may be greater than the stroke of the second damper. In this case, the first damper can adequately absorb large vertical vibrations, thereby quickly cessating the vibrations of the equipment.

[0013] The intermediate support member may be supported by a universal joint relative to the rotating member. In this case, the intermediate support member can rotate in multiple directions, including the second pivot axis, further reducing the impact on the equipment.

[0014] A cargo handling device according to one aspect of the present invention comprises a wire having a joint, a deflection sheave for guiding the wire, a support structure for supporting the deflection sheave, and a vibration isolation device for supporting equipment, wherein the vibration isolation device comprises a support structure mounting member provided on the support structure, and an equipment mounting member attached to the support structure mounting member and to which equipment is mounted, and which moves closer to and further away from the support structure mounting member in the vertical direction.

[0015] By incorporating the aforementioned vibration isolation device, this cargo handling system allows for the effective use of equipment while reducing the impact on the equipment. [Effects of the Invention]

[0016] According to the present invention, it is possible to provide a vibration isolation device and a cargo handling device that can reduce the impact on equipment.

Brief Description of Drawings

[0017] [Figure 1] It is a schematic diagram for explaining the overall configuration of the cargo handling device according to the present embodiment. [Figure 2] It is a schematic diagram for explaining the overall configuration of the cargo handling device according to the present embodiment. [Figure 3] It is a schematic diagram showing the configurations of the suspension part, wire, and winding device. [Figure 4] It is a schematic diagram showing the structure near the tip of the jib. [Figure 5] It is a schematic diagram showing the structure near the tip of the jib. [Figure 6] It is a schematic diagram showing the state of winding of the wire having a joint. [Figure 7] It is a perspective view of the vibration isolation device. [Figure 8] It is a perspective view of the vibration isolation device. [Figure 9] It is a schematic diagram for explaining the overall configuration of the cargo handling device according to a modified example.

Modes for Carrying Out the Invention

[0018] Hereinafter, embodiments of the vibration isolation device and the cargo handling device according to the present invention will be described with reference to the accompanying drawings. In the following description, the same or corresponding elements are denoted by the same reference numerals, and redundant descriptions are omitted.

[0019] First, referring to FIGS. 1 and 2, the structure of the cargo handling device according to the embodiment of the present invention will be described. FIGS. 1 and 2 are schematic diagrams for explaining the overall configuration of the cargo handling device according to the present embodiment.

[0020] In the present embodiment, as the cargo handling device 100, a horizontal retractable unloader (LLC: Level Luffing Crane) is adopted. Note that the cargo handling device 100 is not limited to a horizontal retractable unloader, and a gantry crane type unloader or the like may be adopted.

[0021] The cargo handling device 100 is a device positioned on a quay or the like to load and unload cargo from a cargo ship. As shown in Figure 1, the cargo handling device 100 comprises legs 1A, 1B, a slewing device 2, a jib 3 as a support structure, a lifting section 4, a wire 6, a winding device 7, and a retraction device 8. In the following description, the direction toward the sea (left side of the figure) where the cargo ship is positioned relative to the quay will be referred to as the "sea side," and the direction toward land (right side of the figure) will be referred to as the "land side." Figure 1 shows the state where the lifting section 4 is at its maximum radius by extending the jib 3. Figure 2 shows the state where the lifting section 4 is at its minimum radius by folding the jib 3.

[0022] The legs 1A and 1B are positioned on the quay and form a frame that supports the entire cargo handling device 100. Leg 1A is located on the land side, and leg 1B is located on the sea side. Legs 1A and 1B extend vertically. The lower ends of legs 1A and 1B are equipped with traveling devices 10A and 10B that run on rails 9A and 9B provided on the quay. This allows the cargo handling device 100 to travel along the rails along the quay. The slewing device 2 is located on the upper part of legs 1A and 1B. The slewing device 2 rotates relative to legs 1A and 1B to rotate the jib 3. The slewing device 2 is equipped with a support column 5 that extends upward.

[0023] The jib 3 is a component supported by the slewing device 2 of the legs 1A and 1B. During cargo handling operations, the jib 3 is positioned to extend from the slewing device 2 toward the sea. Therefore, the side of the jib 3 closer to the slewing device 2 is sometimes called the land side, and the side further away from the slewing device 2 is called the sea side. The jib 3 has a front link 3B provided on the slewing device 2 and a jib link 3A that is bendable relative to the front link 3B. The jib link 3A is bendably connected to the seaward end of the front link 3B.

[0024] The lifting section 4 is suspended by a wire 6 from the seaward end of the jib link 3A of the jib 3. The lifting section 4 is the part used for loading and unloading cargo. A bucket is used as the lifting device for the lifting section 4. The wire 6 is a component connected to the lifting section 4. The winding device 7 is a mechanism that winds the wire 6 using a drum. The winding device 7 controls the vertical movement and opening / closing of the lifting section 4 by winding and unwinding the wire 6. The lifting device for the lifting section 4 is not limited to a bucket; lifting devices appropriate to the cargo can be used. Examples of lifting devices include hooks, lifting magnets, and coil lifters. The retraction device 8 can adjust the distance from the center of the lifting section 4 by retracting the front link 3B of the jib 3. Various actuators such as hydraulic cylinders and electric cylinders can be used as the retraction device 8.

[0025] Here, the front link 3B has a main body 11, a weight 12, and a link 13. The main body 11 is the part that connects the slewing device 2 and the jib link 3A. The main body 11 is connected to the jib link 3A at an intermediate position. The weight 12 functions as a counterweight when the suspension 4 is pulled towards the land. The weight 12 is connected to the upper end of the support column 5 and the end of the link 13. The link 13 connects the intermediate position of the main body 11 and the weight 12. Each member of the front link 3B is rotatably connected at the connection points 14A, 14B, 14C, and 14D shown in the figure.

[0026] Jib 3 has deflection sheaves 16A, 16B, and 16C. The deflection sheaves 16A, 16B, and 16C are rotatable members for changing the direction of the wire 6. Deflection sheave 16A is provided at the upper end of the support column 5. Deflection sheave 16B is provided at the landward end of the jib link 3A. Deflection sheave 16C is provided at the seaward end of the jib link 3A. The wire 6 pulled out from the winding device 7 is directed toward the jib link 3A by deflection sheave 16A. The wire 6 deflected by deflection sheave 16A is directed toward the seaward end of the jib link 3A by deflection sheave 16B. The wire 6 deflected by deflection sheave 16B is directed downward by deflection sheave 16C.

[0027] Next, the wire 6 will be described in more detail with reference to Figure 3. Figure 3 is a schematic diagram showing the configuration of the lifting section 4, the wire 6, and the winding device 7. In Figure 3, the horizontal direction between the sea side and the mountain side is defined as the front-rear direction D1, and the horizontal direction perpendicular to the front-rear direction D1 is defined as the width direction D2. As shown in Figure 3, the cargo handling device 100 includes, as the wire 6, a pair of support wires 6A that support the lifting section 4, and a pair of opening / closing wires 6B that open and close the lifting section 4. The pair of opening / closing wires 6B are arranged side by side in the width direction D2. The pair of support wires 6A are arranged to be further outward in the width direction D2 than the pair of opening / closing wires 6B. The lifting section 4 includes a connecting section 20, a connecting section 21, and a pair of opening / closing sections 22. The connecting section 20 is a member that is connected to the pair of support wires 6A. The connecting section 21 is a member that is located below the connecting section 20 and is connected to the pair of opening / closing wires 6B. The pair of opening / closing sections 22 are members that grip cargo by opening and closing with the connecting section 21 as a pivot point. The cargo handling device 100 includes a winding device 7, which consists of a support drum 7A and an opening / closing drum 7B. The support drum 7A moves the lifting section 4 vertically by winding and unwinding the support wire 6A. The opening / closing drum 7B opens and closes the opening / closing section 22 of the lifting section 4 by winding and unwinding the opening / closing wire 6B.

[0028] Figures 4 and 5 are schematic diagrams showing the structure near the tip of the jib 3. Figure 4 shows the jib 3 in the extended state, corresponding to Figure 1. Figure 5 shows the jib 3 in the folded state, corresponding to Figure 2. As shown in Figures 4 and 5, the deflection sheave 16C is provided at the tip of the jib 3 and guides the wire 6 to the suspension section 4. The tip of the jib 3 (especially the tip of the all-link 3A) functions as a support structure that supports the deflection sheave 16C. Here, the wire 6 guided by the deflection sheave 16C of the jib link 3A extends downward. The opening / closing wire 6B is provided with a joint 24 between the deflection sheave 16C and the suspension section 4 at its tip (see also Figure 3).

[0029] A jib-tip walkway 26 is provided at the tip of the front link 3A, positioned diagonally upward toward the sea. The jib-tip walkway 26 is a place for workers to walk for work during maintenance and other tasks. In this embodiment, equipment 28 is provided on the jib-tip walkway 26. The equipment 28 is not particularly limited, but examples include a floodlight that illuminates the lifting section 4, a camera that photographs the lifting section 4, and other sensors. Regardless of the orientation of the jib 3 and the jib-tip walkway 26 (see Figures 4 and 5), the equipment 28 is directed toward the lifting section 4 below. The location where the equipment 28 is provided is not particularly limited, and it may be provided at locations other than the jib-tip walkway 26 on the cargo handling equipment 100.

[0030] Now, with reference to Figure 6, the winding of the wire 6 with the joint 24 will be described. As shown in Figure 6(a), when the wire 6 is wound by the winding device 7 (see Figure 1), the joint 24 approaches the deflection sheave 16C. As the wire 6 is wound further, as shown in Figure 6(b), the joint 24 collides with the deflection sheave 16C. At this time, an impact force is generated near the tip of the jib 3. As the wire 6 is wound further, as shown in Figures 6(c) and (d), the joint 24 wraps around the deflection sheave 16C and rides over it as it passes.

[0031] Returning to Figures 4 and 5, as described above, near the tip of the jib 3, vibrations are transmitted to the mounting point of the equipment 28 when the joint 24 collides with the turning sheave 16C. Therefore, the cargo handling equipment 100 is equipped with a vibration isolation device 30. The vibration isolation device 30 supports the equipment 28 and suppresses vibrations transmitted to the equipment 28. In addition, the vibration isolation device 30 also has the function of maintaining the posture of the equipment 28 regardless of the posture of the jib 3 and the jib-tip walkway 26.

[0032] Next, the specific configuration of the vibration isolation device 30 will be described with reference to Figures 7 and 8. Figures 7 and 8 are perspective views of the vibration isolation device 30. Figures 7 and 8 show the state when the jib 3 is in the position corresponding to Figures 1 and 4. Here, a lighting fixture is used as an example of equipment 29. As shown in Figures 7 and 8, the vibration isolation device 30 includes a jib mounting member 31 (support structure mounting member), a rotating member 32, an equipment mounting member 33, and an intermediate support member 34. Furthermore, the vibration isolation device 30 includes a swing damper 36, a first damper 37, and second dampers 38 and 39.

[0033] The jib mounting member 31 is a member provided at the tip of the jib 3 (see Figure 4). In this embodiment, the jib mounting member 31 is attached to the frame of the jib end walkway 26 as the tip of the jib 3. The jib mounting member 31 is a plate-shaped member that extends in the front-rear direction D1 and the width direction D2. The jib mounting member 31 has a connecting portion 41 that is rotatably connected to the rotating member 32.

[0034] The rotating member 32 is attached to the jib mounting member 31 and rotates around the jib mounting member 31. The rotating member 32 comprises an inclined frame portion 42, an upper and lower frame portion 43, and a base member 44. The inclined frame portion 42 is a portion that extends from the jib mounting member 31, inclined downwards toward the land. The inclined frame portion 42 is rotatably connected to the jib mounting member 31 at its upper end. The upper and lower frame portion 43 is a portion that extends downwards from the lower end of the inclined frame portion 42. The base member 44 is provided at the lower end of the upper and lower frame portion 43. The base member 44 extends from the lower end of the upper and lower frame portion 43 toward the sea in the longitudinal direction D1. A piece portion 46 is provided from the seaward end of the base member 44, extending toward the sea in the longitudinal direction D1.

[0035] The pair of connecting parts 41 of the inclined frame section 42 are positioned to sandwich the upper end of the inclined frame section 42 from both sides in the width direction D2. In this state, the pair of connecting parts 41 and the upper end of the inclined frame section 42 are connected by a shaft so as to be rotatable relative to each other around the first pivot axis CL1. The first pivot axis CL1 extends parallel to the width direction D2. As a result, the rotating member 32 swings about the first pivot axis CL1 relative to the jib mounting member 31. The rotating member 32 swings in the front-rear direction as the angle of the jib 3 changes. The swing damper 36 is connected to the jib mounting member 31 at its upper end and to the rotating member 32 at its lower end. The swing damper 36 is positioned on one side in the width direction D2 relative to the upper and lower frame sections 43. The swing damper 36 is composed of a piston and a rod. The upper end of the swing damper 36 is attached to the jib mounting member 31 so as to be rotatable around a pivot axis that extends parallel to the width direction D2. The lower end of the swing damper 36 is attached near the lower end of the upper and lower frame section 43 so as to be rotatable around a pivot axis that extends parallel to the width direction D2. As a result, when the pivot member 32 swings in the front-rear direction due to the angle change of the jib 3, the swing damper 36 absorbs the sway, thereby allowing the sway to be stopped quickly.

[0036] The equipment mounting member 33 is attached to the rotating member 32 and to which the equipment 29 is attached. The equipment mounting member 33 is attached to the rotating member 32 via an intermediate support member 34. The equipment mounting member 33 also moves closer to and further away from the rotating member 32 in the vertical direction. The equipment mounting member 33 comprises a bracket 47, a support portion 48, and a pair of column portions 49. The bracket 47 is a member having an upper wall, a side wall, and a lower wall. The bracket 47 is positioned on the seaward side in the front-rear direction D1 relative to the base member 44 of the rotating member 32. The bracket 47 is also positioned so that its upper wall faces the side portion 46 below. The support portion 48 has a pair of arm portions extending downward from the lower wall of the bracket 47. The support portion 48 supports the equipment 29 at the lower ends of each arm portion. The pair of column portions 49 extend upward from the upper wall of the bracket 47. The pair of column sections 49 are arranged side by side in the width direction D2, spaced apart from each other. The upper ends of the pair of column sections 49 are connected to each other by a connecting member 50 that extends in the width direction D2.

[0037] The intermediate support member 34 is a member provided between the rotating member 32 and the equipment mounting member 33. The intermediate support member 34 comprises a main body 51, a pair of cylindrical parts 52, and a pair of arm parts 53. The main body 51 is a member that extends in the width direction D2 between a pair of column parts 49 of the equipment mounting member 33. The pair of cylindrical parts 52 are provided at both ends of the main body 51 in the width direction D2 and are attached so as to surround the pair of column parts 49. The pair of cylindrical parts 52 support the pair of column parts 49 so that they can slide in the vertical direction. The pair of arm parts 53 extend from both ends of the main body 51 in the width direction D2 toward the land side in the front-rear direction D1.

[0038] The central position of the main body 51 in the width direction D2 and the single piece 46 of the rotating member 32 are opposite each other, spaced apart in the vertical direction. A spherical seat 54 (universal joint) is provided between the central position of the main body 51 and the single piece 46. The spherical seat 54 is fixed to the single piece 46 and has a spherical surface on its upper side. The central position of the main body 51 abuts against the spherical surface of the spherical seat 54 and is slidable relative to the spherical surface. As a result, the intermediate support member 34 rotates at least around a second rotation axis CL2 that intersects with the first rotation axis CL1 of the rotating member 32. The second rotation axis CL2 is a hypothetical axis extending in the front-rear direction. Furthermore, the intermediate support member 34 is rotatable around a rotation axis that extends horizontally and is inclined with respect to the second rotation axis CL2 by the spherical seat 54. In addition to the spherical seat 54, various universal joints such as a cross-shaped universal joint may be used.

[0039] A first damper 37 is provided between the main body 51 of the intermediate support member 34 and the connecting member 50 of the equipment mounting member 33. The first damper 37 is a spring-loaded air damper that can expand and contract vertically, supporting the weight of the equipment 29 and keeping it in a floating state. Furthermore, when an impact force is generated, the pair of columnar sections 49 are guided by the pair of cylindrical sections 52, causing the equipment mounting member 33 to vibrate vertically with the equipment 29 relative to the intermediate support member 34. At this time, the connecting member 50 repeatedly moves away from and closer to the main body 51 in the vertical direction. By repeatedly expanding and contracting the first damper 37, the vibrations of the equipment mounting member 33 and the equipment 29 can be stopped quickly. Furthermore, by providing springs 56 on the pair of columnar sections 49, the impact when the equipment 29 moves downward can be further mitigated.

[0040] Second dampers 38 and 39 are provided between the pair of arm portions 53 of the intermediate support member 34 and the base member 44 of the rotating member 32. The second dampers 38 and 39 are air dampers that can expand and contract in the vertical direction. The stroke of the first damper 37 is greater than the stroke of the second dampers 38 and 39. When an impact force is generated, the intermediate support member 34 vibrates so that it rotates at least around the second pivot axis CL2 together with the equipment mounting member 33 and the equipment 29. At this time, the movement of the second damper 38 contracting as one arm portion 53 approaches the base member 44 in the width direction D2, and the movement of the second damper 39 extending as the other arm portion 53 moves away from the base member 44, are repeated alternately. As a result, the second dampers 38 and 39 absorb the vibrations, allowing the vibrations of the intermediate support member 34, the equipment mounting member 33, and the equipment 29 to subside quickly.

[0041] Next, the operation and effects of the vibration isolation device 30 and the cargo handling device 100 will be explained.

[0042] The vibration isolation device 30 supports equipment 29 installed on a cargo handling device 100, which comprises a jib 3, a wire 6 having a joint 24, and a deflection sheave 16C provided at the tip of the jib 3 to guide the wire 6. Therefore, impact forces can be transmitted to equipment 29 when the joint 24 collides with the deflection sheave 16C during the winding of the wire 6. In response to this, the vibration isolation device 30 is attached to a jib mounting member 31 and includes a rotating member 32 that rotates around the jib mounting member 31. Therefore, the rotating member 32 vibrates to rotate around the jib mounting member 31 when an impact force is generated, thereby reducing the impact transmitted to equipment 29. In addition, the rotating member 32 can maintain the posture of equipment 29 relative to the lifting section 4 by rotating in accordance with the angle change of the jib 3. Furthermore, the vibration isolation device 30 includes an equipment mounting member 33 to which equipment 29 is attached and which is attached to the rotating member 32, and which moves closer to and further away from the rotating member 32 in the vertical direction. As a result, when an impact force is generated, the equipment mounting member 33 moves vertically with the equipment 29 relative to the rotating member 32, thereby reducing the impact transmitted to the equipment 29. Therefore, the impact on the equipment 29 can be reduced.

[0043] The vibration isolation device 30 may further include an intermediate support member 34 provided between the rotating member 32 and the equipment mounting member 33, which rotates at least around a second rotation axis CL2 that intersects with the first rotation axis CL1 of the rotating member 32. In this case, the intermediate support member 34 can rotate together with the equipment mounting member 33 and the equipment 29 at least around the second rotation axis CL2, thereby reducing the impact on the equipment 29.

[0044] The vibration isolation device 30 may further include a first damper 37 provided between the equipment mounting member 33 and the intermediate support member 34. In this case, the first damper 37 can absorb vibrations when the equipment mounting member 33 vibrates so that it moves vertically together with the equipment 29. As a result, the first damper 37 can quickly eliminate vibrations of the equipment 29.

[0045] The vibration isolation device 30 may further include second dampers 38 and 39 provided between the rotating member 32 and the intermediate support member 34. In this case, the second dampers 38 and 39 can absorb vibrations when the intermediate support member 34 vibrates in such a way that it rotates together with the equipment mounting member 33 and the equipment 29. As a result, the second dampers 38 and 39 can quickly eliminate vibrations in the equipment 29.

[0046] The stroke of the first damper 37 may be greater than the stroke of the second dampers 38 and 39. In this case, the first damper 37 can sufficiently absorb large vertical vibrations, thereby quickly cessating the vibrations of the equipment 29.

[0047] The intermediate support member 34 may be supported by a spherical seat 54 on the rotating member 32. In this case, the intermediate support member 34 can rotate in multiple directions, including the second pivot axis CL2, and the impact on the equipment 29 can be further reduced.

[0048] The cargo handling device 100 comprises a jib 3, a wire 6 having a joint 24, a deflection sheave 16C provided at the tip of the jib 3 to guide the wire 6, and a vibration isolation device 30 supporting equipment 29. The vibration isolation device 30 comprises a jib mounting member 31 provided at the tip of the jib 3, a rotating member 32 attached to the jib mounting member 31 and rotating around the jib mounting member 31, and an equipment mounting member 33 attached to the rotating member 32 and to which equipment 29 is attached, and which moves closer to and further away from the rotating member 32 in the vertical direction.

[0049] By incorporating the aforementioned vibration isolation device 30, this cargo handling device 100 can effectively utilize the equipment 29 while reducing the impact on it.

[0050] The present invention is not limited to the embodiments described above.

[0051] For example, the shape of the vibration isolation device 30, and the shape and arrangement of its components are not limited to the embodiments described above. Also, dampers 37, 38, and 39 may be omitted from the vibration isolation device 30. Furthermore, the intermediate support member 34 may be omitted from the vibration isolation device 30, and the rotating member 32 and the equipment mounting member 33 may be directly connected.

[0052] Figure 9 shows a modified cargo handling device 200. As shown in Figure 9, a bridge crane unloader may be used as the modified cargo handling device 200. The cargo handling device 200 comprises legs 101A and 101B that can travel in a predetermined direction, a girder 103B that protrudes from the legs 101A and 101B in a direction intersecting the direction of travel, a trolley 103A that can travel along the girder 103B, a lifting section 104, a wire 106, and a winding device 107. In the case of a bridge crane unloader, the turning sheave 116 and equipment are attached to the trolley 103A. The trolley 103A functions as a support structure that supports the turning sheave 116. The wire 106 pulled out from the winding device 107 is directed downward by the turning sheave 116. The winding device 107 winds and unwinds the wire 106, thereby causing the trolley 103A to travel, the suspension section 104 to move up and down, and to open and close. Support structure mounting members and equipment mounting members may be provided for the equipment attached to the trolley 103A in this manner. [Explanation of Symbols]

[0053] 3...Jib (support structure), 6,106...Wire, 16C,116...Detachment sheave, 24...Coupling, 30...Vibration isolation device, 31...Jib mounting member (support structure mounting member), 32...Rotating member, 33...Equipment mounting member, 34...Intermediate support member, 37...First damper, 38,39...Second damper, 54...Spherical seat (universal joint), 100,200...Cargo handling equipment, 103...Trolley (support structure).

Claims

1. A vibration isolation device for supporting equipment installed in a cargo handling device comprising a wire having a joint, a deflection sheave for guiding the wire, and a support structure for supporting the deflection sheave, A support structure mounting member provided on the aforementioned support structure, A vibration isolation device comprising: an equipment mounting member attached to the support structure mounting member and to which the equipment is mounted, and which moves in a vertical direction to approach and move away from the support structure mounting member.

2. The vibration isolation device according to claim 1, further comprising a rotating member provided between the support structure mounting member and the equipment mounting member, attached to the support structure mounting member, and rotating around the support structure mounting member.

3. The vibration isolation device according to claim 2, further comprising an intermediate support member provided between the rotating member and the equipment mounting member, which rotates at least around a second pivot axis that intersects the first pivot axis of the rotating member.

4. The vibration isolation device according to claim 3, further comprising a first damper provided between the equipment mounting member and the intermediate support member.

5. The vibration isolation device according to claim 4, further comprising a second damper provided between the rotating member and the intermediate support member.

6. The vibration isolation device according to claim 5, wherein the stroke of the first damper is greater than the stroke of the second damper.

7. The vibration isolation device according to claim 3, wherein the intermediate support member is supported by a universal joint with respect to the rotating member.

8. A cargo handling device comprising a wire having a joint, a deflection sheave for guiding the wire, a support structure for supporting the deflection sheave, and a vibration isolation device for supporting equipment, The vibration isolation device is A support structure mounting member provided on the aforementioned support structure, A cargo handling device comprising: an equipment mounting member attached to the support structure mounting member and to which the equipment is mounted, and which moves in a vertical direction toward and away from the support structure mounting member.

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