Lifting device and lifting system for heavy objects

Abstract

To provide a lifting device and lifting system that can be easily moved and capable of lifting heavy objects. [Solution] The luffing device 1 comprises a belt 2 connected to a fallen protective relay panel A, a winch 3 to which the belt 2 is connected and which can rewind the belt 2, and a support structure 4 which supports the winch 3 and on which the belt 2 is hung and which changes the direction of the belt 2. The belt support rod 41 is positioned above the winch 3 and closer to the protective relay panel A than the winch 3 when the luffing device 1 is installed relative to the protective relay panel A.

Description

Technical Field

[0001] The present invention relates to a lifting device and a lifting system for heavy objects.

Background Art

[0002] In the installation work and removal work of the protective relay panel, the work of lifting the protective relay panel from the fallen state to the upright state may be carried out. Since the protective relay panel is a heavy object weighing about 350 kg, about five people are required for the lifting work of the protective relay panel. Therefore, an attempt has been made to save labor in the lifting work of heavy objects such as protective relay panels. For example, Patent Document 1 discloses a heavy object posture changing device including a frame assembled in a U shape, two supports for holding a heavy object, a lifting device for lifting the heavy object held by each support, and an uprighting device for uprighting the lifted heavy object and rotating it to the posture.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The heavy object posture changing device of Patent Document 1 can lift a heavy object from the ground and, since a plurality of hydraulic drive cylinders are used as drive sources, it has a considerably large size and weight. Therefore, transportation by a transport vehicle is required, and it is considered difficult to transport manually. As a result, there is also a problem that the working environment is limited because it cannot be installed at a site where a transport vehicle cannot reach.

[0005] The present invention has been made based on such a background, and an object thereof is to provide a lifting device and a lifting system that can be easily moved and can lift a heavy object. [Means for solving the problem]

[0006] To achieve the above objective, the luffing device according to the present invention is A luffing device that raises a heavy object that is lying on its side, A traction member connected to the aforementioned heavy object in a fallen state, The towing member is connected to a winch capable of winding up the towing member, A support structure that supports the winch, on which the traction member is hung, and on which a guide means for changing the orientation of the traction member is provided, positioned above the winch and closer to the heavy object than the winch when the luffing device is installed on the heavy object; Equipped with, The traction member is It is positioned on the back side of the heavy object in a fallen state, extending in the longitudinal direction of the heavy object, and is connected to the heavy object below the center of gravity of the heavy object. The system comprises a sling wrapped around the heavy object perpendicular to its longitudinal direction, and a belt connected to the sling on the back side of the heavy object, which is wound up by the winch and contacts the back of the heavy object. ru. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a luffing device and luffing system that can be easily moved and capable of luffing heavy objects. [Brief explanation of the drawing]

[0008] [Figure 1] This is a front view showing the configuration of a luffing system according to an embodiment of the present invention. [Figure 2] This is a side view showing the configuration of a rafter system according to an embodiment of the present invention. [Figure 3] This is a front view showing the protective relay panel slightly raised by the elevation system shown in Figure 1. [Figure 4] This is a front view showing the protective relay panel further raised by the elevation system shown in Figure 1. [Figure 5] This is a front view showing the protective relay panel raised by the elevation system shown in Figure 1. [Modes for carrying out the invention]

[0009] Hereinafter, a luffing device and luffing system for heavy objects according to embodiments of the present invention will be described in detail with reference to the drawings. In each drawing, the same or equivalent parts are denoted by the same reference numerals. In the embodiments, a Cartesian coordinate system is used in which the longitudinal direction of a heavy object lying on a horizontal plane is the X-axis direction, the width direction of the heavy object is the Y-axis direction, and the direction perpendicular to the X and Y axes (up and down direction) is the Z-axis direction.

[0010] The luffing system according to this embodiment is a system that raises a heavy object that is lying on its side to an upright position. A heavy object is an object that is taller than it is wide or deep, and is difficult to raise manually. The following explanation will use the case of raising a protective relay panel that is lying on its side as an example.

[0011] As shown in Figures 1 and 2, the luffing system 10 includes a trolley 11 on which the lower rear side of the protective relay panel A is in contact and on which the protective relay panel A can move in translation toward the luffing device 1, a plurality of sleepers 12 on which the upper rear side of the protective relay panel A is in contact and which support the protective relay panel A together with the trolley 11, and a luffing device 1 which raises and lowers the protective relay panel A while it is resting on the trolley 11.

[0012] The luffing device 1 is positioned on the rear side of the protective relay panel A so as to extend in the longitudinal direction (X-axis direction) of the fallen protective relay panel A, and includes a belt 2 connected to a sling 2A that is wrapped around the front, back and both sides of the protective relay panel A below the center of gravity G of the protective relay panel A, a winch 3 capable of winding up the belt 2, and a support structure 4 that supports the winch 3 and has a belt support rod 41 on which the belt 2 is placed and whose direction is changed, positioned above the winch 3 and closer to the protective relay panel A than the winch 3 when the luffing device 1 is installed relative to the protective relay panel A. The belt support rod 41 is an example of a guide means on which the belt 2 is placed and whose direction is changed. The luffing device 1 is installed relative to a heavy object so as to extend in the Y-axis direction.

[0013] Since the undulating system 10 has the above-described configuration, when the winch 3 continues to wind, tension acts on the belt 2 disposed on the back side of the protection relay panel A, and the upper side of the protection relay panel A can be gradually lifted while the portion where the back and bottom surfaces of the protection relay panel A meet is in contact with the carriage 11. Further, since the length of the belt 2 between the belt support rod 41 and the protection relay panel A gradually becomes shorter, the carriage 11 on which the protection relay panel A is placed moves in the -X direction toward the support structure 4. As a result, the angle formed by the belt 2 with respect to the horizontal plane can be made larger, so that the protection relay panel A on the carriage 11 can be raised until it extends in the Z-axis direction.

[0014] Next, referring to FIGS. 1 and 2, the configuration of the undulating device 1 according to the embodiment will be described. The belt 2 of the undulating device 1 is an example of a traction member that is tractioned by being wound up by the winch 3. The belt 2 has a certain width and can stably support the load from the back surface of the protection relay panel A when tension is applied.

[0015] A sling 2A that wraps around the front, back, and both side surfaces of the protection relay panel A is connected to the end of the belt 2. The sling 2A may be connected to the belt 2 via a carabiner (not shown). Eye bolts 2B are respectively fixed to the lower sides of both side surfaces of the protection relay panel A, and the sling 2A is disposed below the protection relay panel A with respect to the eye bolts 2B. The sling 2A is wound around the protection relay panel A once and then tightened so as not to have slack. The eye bolt 2B is an example of locking means for locking the sling 2A, and holds the sling 2A so as not to move upward with respect to the protection relay panel A when the belt 2 is tractioned by the winch 3. Thereby, the tensile force from the belt 2 can be transmitted to the protection relay panel A via the sling 2A and the eye bolt 2B.

[0016] The winch 3 is a machine that winds the belt 2. The winch 3 can be either manual or electric, but considering portability and the need for power supply, the manual type is preferred. The winch 3 is configured to amplify the torque input by hand or by a motor by means of a gear reduction mechanism and transmit it to the drum, and wind the belt by the rotation of the drum. The winch 3 may be provided with either a ratchet mechanism or a brake to prevent the unintentional feeding of the belt 2.

[0017] The support structure 4 is a structure that supports the protective relay panel A in the middle of the operation caused by the belt 2 and the winch 3 when installed on the ground. The load from the protective relay panel A is transmitted to the support structure 4 via the belt 2 with tension applied.

[0018] The support structure 4 includes a belt support rod 41 on which the belt 2 is hung and the load from the protective relay panel A is applied via the belt 2, and a pair of legs 42, 43 that are arranged at intervals so as to sandwich the protective relay panel A and support the belt support rod 41 at their respective upper ends. The belt support rod 41 has a length that can support the back surface of the protective relay panel A. The pair of legs 42, 43 are arranged in line with the length of the belt support rod 41.

[0019] The leg 42 includes a pair of struts 42a, 42b that are connected to each other at the upper end, extend in a direction intersecting the longitudinal direction of the belt support rod 41, and are arranged such that the lower ends are separated from each other. Below the pair of struts 42a, 42b, a reinforcing member 42c is provided that extends in a direction intersecting the pair of struts 42a, 42b and reinforces the pair of struts 42a, 42b. The leg 43 has the same configuration as the leg 42 and includes a pair of struts 43a, 43b and a reinforcing member 43c. The reinforcing members 42c, 43c maintain the shape so that the lower ends of the pair of struts 42a, 42b and the lower ends of the pair of struts 43a, 43b do not open even when a load is applied to the belt support rod 41 from above.

[0020] Each support column 42a, 42b, 43a, and 43b extends perpendicularly to the belt support rod 41, and each has a rubber cap attached to its lower end as an anti-slip measure. The lengths of each support column 42a, 42b, 43a, and 43b are set so that the belt 2 can be connected to the protective relay panel A below the center of gravity G of the protective relay panel A when the protective relay panel A is tilted, and so that the belt support rod 41 is positioned above the center of gravity G of the protective relay panel A when the protective relay panel A is upright.

[0021] Of the legs 42 and 43, the support columns 42a and 43a on the side furthest from the heavy object are connected to winch support rods 44 that extend parallel to the belt support rod 41 and support the winch 3. The winch support rods 44 are located below the support columns 42a and 43a and, together with the belt support rod 41, maintain the distance between the pair of legs 42 and 43. The winch 3 is installed midway along the longitudinal direction of the winch support rod 44.

[0022] The belt support rod 41, each support column 42a, 42b, 43a, 43b, reinforcing members 42c, 43c, and winch support rod 44 may be constructed, for example, from single-pipe scaffolding. Each single-pipe scaffolding can be easily connected via connecting fittings. By using readily available and easy-to-assemble single-pipe scaffolding, the support structure 4 can be manufactured quickly and at low cost. The above describes the configuration of the luffing device 1.

[0023] The trolley 11 comprises a plate on which the protective relay panel A is placed, and four wheels rotatably supported on the bottom surface of the plate and rolling on the ground. The plate has sufficient rigidity to not deform even when the protective relay panel is placed on it. The height of the trolley 11 should be adjusted to match the height of the mounting base where the protective relay panel A will be installed. This improves the workability when installing the protective relay panel A from the trolley 11 onto the mounting base.

[0024] The sleeper 12 is a member that contacts the back of the fallen protective relay panel A and supports the protective relay panel A from below. As shown in Figure 2, a groove 12a is formed on the upper surface of the sleeper 12 through which the belt 2 passes in the width direction of the sleeper 12. Therefore, the belt 2 passed through the groove 12a can be pulled while the protective relay panel A is placed on the sleeper 12. The above describes the configuration of the elevation system 10.

[0025] Next, the operation of the luffing device 1 according to the embodiment will be described with reference to Figures 1 to 5. First, when the user begins winding the winch 3 in the state shown in Figures 1 and 2, the belt 2 positioned on the back of the protective relay panel A is pulled up toward the belt support rod 41 of the support structure 4. This generates tension in the belt 2, causing it to make tight contact with the back of the protective relay panel A. Once tension is generated in the belt 2, it becomes possible for the belt 2 to support the protective relay panel A from below.

[0026] As the winch 3 continues to be wound, the length of the belt 2 between the protective relay panel A and the belt support rod 41 gradually shortens. At this time, an upward force is generated on the belt 2, causing the protective relay panel A to rise up on the trolley 11, starting from the point P where the back and bottom surfaces of the protective relay panel A intersect. At this time, the load of the protective relay panel A is transmitted to the belt support rod 41 via the belt 2 at the top, and the load transmitted to the belt support rod 41 is then transmitted to the four support columns 42a, 42b, 43a, and 43b, thus providing stable support for the protective relay panel A.

[0027] As the winch 3 continues to be wound, the length of the belt 2 between the protective relay panel A and the belt support rod 41 becomes even shorter. At this time, an upward force is generated in the belt 2, causing the protective relay panel A to rise further on the trolley 11, starting from the point P where the back and bottom surfaces of the protective relay panel A intersect. Simultaneously, a horizontal force is also generated in the belt 2, so a horizontal force is transmitted from the point P where the back and bottom surfaces of the protective relay panel A intersect to the trolley 11, causing the trolley 11 to move toward the support structure 4, as shown in Figure 4. As a result, the back of the protective relay panel A moves above the belt support rod 41. At this time, rubber caps are attached to the lower ends of each support column 42a, 42b, 43a, and 43b, and the lower ends of the pair of support columns 42a, 42b and the pair of support columns 43a, 43b are spread apart like a stepladder, so even if a moment is applied to the belt support rod 41, the support structure 4 can be prevented from tipping over.

[0028] As the winch 3 continues to be wound, the protective relay panel A rises on the trolley 11 due to the action of the belt 2 and the trolley 11, as shown in Figure 5, and the trolley 11 moves between the legs 42 and 43 of the support structure 4. This allows the protective relay panel A to be raised on the trolley 11. The above describes the operation of the luffing device 1.

[0029] Next, the procedure for raising the protective relay panel A using the raising device 1 according to the embodiment will be explained. The protective relay panel A is assumed to be placed in a tilted state on top of a plurality of sleepers 12, as shown in Figures 1 and 2.

[0030] First, eye bolts 2B are fixed to both sides of protective relay panel A, and slings 2A are set to surround the front, back, and both sides of protective relay panel A. Slings 2A are set below the eye bolts 2B fixed to protective relay panel A.

[0031] Next, the luffing device 1 is installed on the protective relay panel A. Specifically, a support structure 4 with a winch 3 is set up so that it faces the top surface of the protective relay panel A. Next, the belt 2 extending from the winch 3 is placed on the belt support rod 41 of the support structure 4, and the belt 2 is set up so that it extends to the back of the protective relay panel A. At this time, the belt 2 is placed in the groove 12a of the sleeper 12. Next, the end of the belt 2 and the sling 2A are connected using a carabiner. Next, the trolley 11 is set on the lower back side of the protective relay panel A. This completes the preparation process.

[0032] Next, as winch 3 is turned in, the protective relay panel A, mounted on the trolley 11, gradually rises as it approaches the support structure 4. Once the protective relay panel A has risen on the trolley 11 and the sleepers 12 are no longer needed, the sleepers 12 are removed. This is because if the sleepers 12 remain, they will obstruct the movement of the trolley 11. If winch 3 continues to rotate, the protective relay panel A will rise as it approaches the support structure 4 while still mounted on the trolley 11. The above is the general flow of the undulation method.

[0033] As described above, the luffing device 1 according to the embodiment comprises a belt 2 connected to a fallen protective relay panel A, a winch 3 to which the belt 2 is connected and which can rewind the belt 2, and a support structure 4 which supports the winch 3 and on which the belt 2 is hung, and is provided such that the belt support rod 41 is located above the winch 3 and closer to the protective relay panel A than the winch 3 when the luffing device 1 is installed relative to the protective relay panel A. Therefore, the luffing device 1 can be easily moved by hand.

[0034] The present invention is not limited to the embodiments described above, and the following modifications are also possible.

[0035] (modified version) In the above embodiment, a belt support rod 41 was used as a guide means to change the direction of the belt 2, but the present invention is not limited to this. For example, a pulley may be used as a guide means.

[0036] In the above embodiment, each leg portion 42, 43 was provided with a pair of support columns 42a, 42b and a pair of support columns 43a, 43b, but the present invention is not limited thereto. For example, it may be a gantry frame such as that used in a gantry crane.

[0037] In the present invention, reinforcing members 42c and 43c, each made of single-pipe scaffolding, were connected to each of the pair of support columns 42a and 42b and the pair of support columns 43a and 43b, but the present invention is not limited to this. For example, strings or ropes may be used as reinforcing members 42c and 43c and connected to each of the pair of support columns 42a and 42b and the pair of support columns 43a and 43b to restrict movement only in the opening direction.

[0038] In the above embodiment, a belt 2 was used as the towing member, but the present invention is not limited to this. For example, a string or rope may be used as the towing member. Also, in the above embodiment, there was one belt 2 and one winch 3, but the present invention is not limited to this. For example, two belts 2 and two winches 3 may be provided.

[0039] In the above embodiment, the belt 2 was connected to a sling 2A that was wrapped around the front, back, and both sides of the protective relay panel A, but the present invention is not limited to this. For example, the belt 2 may be attached to a pair of eye bolts 2B fixed to both sides of the protective relay panel A.

[0040] In the above embodiment, the belt 2 was positioned on the rear side of the protective relay panel A in a tilted state and connected to the protective relay panel A at a bottom surface below the center of gravity of the protective relay panel A. However, the present invention is not limited to this. If it is not necessary to fully raise the protective relay panel A, for example, the belt 2 may be connected to the rear side of the protective relay panel A and above the center of gravity of the protective relay panel A, or it may be connected to the front side or top side of the protective relay panel A.

[0041] In the above embodiment, the protective relay panel A was mounted on a trolley 11, but the present invention is not limited to this. Depending on the weight of the protective relay panel A and the material of the floor surface, the trolley 11 may be omitted, or a sheet that can slide on the floor surface may be laid instead of the trolley 11.

[0042] In the above embodiment, the protective relay panel A was placed on multiple sleepers 12 in a tilted state, but the present invention is not limited to this. For example, depending on the size of the protective relay panel A, only one sleeper 12 may be used. Also, if the trolley 11 can support the entire back surface of the protective relay panel A, the sleepers 12 may be omitted.

[0043] The embodiments described above are illustrative, and the present invention is not limited thereto. Various embodiments are possible without departing from the spirit of the invention as described in the claims. The components described in the embodiments and modifications can be freely combined. Furthermore, inventions equivalent to the invention described in the claims are also included in the present invention. [Explanation of symbols]

[0044] 1 Lifting device 2 belts 3 winches 4 Support structure 41 Belt support rod 42,43 Legs 42a,42b,43a,43b Post 44 Winch support rod 10. Relief System 11 bogies

Claims

1. A luffing device that raises a heavy object that is lying on its side, A traction member connected to the aforementioned heavy object in a fallen state, The towing member is connected to a winch capable of winding up the towing member, The support structure includes a support structure that supports the winch, on which the traction member is hung, and on which a guide means for changing the orientation of the traction member is provided, positioned above the winch and closer to the heavy object than the winch when the luffing device is installed relative to the heavy object, The traction member is It is positioned on the back side of the heavy object in a fallen state, extending in the longitudinal direction of the heavy object, and is connected to the heavy object below the center of gravity of the heavy object. The system comprises a sling wrapped around the heavy object perpendicular to its longitudinal direction, and a belt connected to the sling on the back side of the heavy object, which is wound up by the winch and contacts the back of the heavy object. Lifting equipment.

2. A luffing device that raises a heavy object that is lying on its side, A traction member connected to the aforementioned heavy object in a fallen state, The towing member is connected to a winch capable of winding up the towing member, The support structure includes a support structure that supports the winch, on which the traction member is hung, and on which a guide means for changing the orientation of the traction member is provided, positioned above the winch and closer to the heavy object than the winch when the luffing device is installed relative to the heavy object, The support structure is arranged at intervals to sandwich the heavy object and comprises a pair of legs that support the guide means at their respective upper ends. Each leg portion comprises a pair of support columns that extend in a direction intersecting the longitudinal direction of the guide means, with their upper ends connected to each other and their lower ends separated from each other. The guide means is a support rod supported at the upper ends of the pair of support columns, on which the traction member is hung. Lifting equipment.

3. On the lower side of each leg of the support column that is furthest from the heavy object, a winch support rod is connected, which extends parallel to the guide means and supports the winch. The luffing device according to claim 2.

4. A luffing device for raising a heavy object that is lying down, A trolley on which the lower rear side of the aforementioned heavy object is placed so as to be in contact with the luffing device, and on which the aforementioned heavy object can be moved in translation toward the luffing device, Equipped with, The luffing device is, A traction member connected to the aforementioned heavy object in a fallen state, The towing member is connected to a winch capable of winding up the towing member, The support structure includes a support structure that supports the winch, on which the traction member is hung, and on which a guide means for changing the orientation of the traction member is provided, positioned above the winch and closer to the heavy object than the winch when the luffing device is installed relative to the heavy object, When the towing member is pulled by the winch, the heavy object placed on the trolley moves in translation toward the luffing device, and the portion where the back and bottom surfaces of the heavy object meet contacts the trolley, allowing the heavy object to be raised onto the trolley. A terrain system.

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