Hoisting tool

Abstract

To provide a hoisting tool 1 for hoisting a gas cylinder 2 and moving it safely.SOLUTION: The hoisting tool 1 comprises a mounting base 4, a holder 5, and two slings 6. The gas cylinder is placed on the mounting base 4, the two slings 6 are passed under the mounting base and crossed, four ends of the slings are pulled upward along a circumferential surface of the gas cylinder, and passed through an inner ring 13 (Fig.3) of the ring-shaped holder 5 arranged at the top of the gas cylinder, and locking parts 6a are hung on hooks. The two slings come into close contact with an inner surface of the holder and are narrowed down to an upper part of the cylindrical body, so that they are tightly attached at four positions on the circumferential surface of the gas cylinder and are difficult to come off. By moving the hooks, the gas cylinder can be stably suspended in a vertical position and moved.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a hoist for holding a cylindrical object, i.e., a cylindrical body, vertically and suspending it with a long body, and in particular to a hoist that stably holds the cylindrical body with the long body and can hoist the cylindrical bodies one by one with the long body and move them safely. Note that the cylindrical body in the present invention means an object with a cylindrical outer shape, and includes any of the cases where the inside is solid, hollow, and hollow and contains some substance. In the following description, a gas cylinder filled with gas is exemplified as an object to be hoisted with the hoist. [Background technology]

[0002] Long, thin, cylindrical gas cylinders are usually stored and used with the axis of the cylinder parallel to the vertical line, i.e., held vertically. Gas cylinders are made of metal and are heavy, so they are prone to tipping over when placed vertically, which is dangerous. Therefore, when storing and using them, they are often stored in box-shaped frames separated by gas type to minimize the risk. When moving gas cylinders stored in frames like this, the frame is lifted up by a crane.

[0003] Conventionally, there was no known simple device capable of safely lifting and transporting gas cylinders one by one, and storing gas cylinders in the frame, removing gas cylinders stored in the frame from the frame, and moving gas cylinders all relied on the manual labor and ingenuity of workers, resulting in a large human burden on site. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention has been made to solve the problems associated with the conventional technology described above, and aims to provide a lifting device that can hold cylindrical objects such as gas cylinders vertically and hoist them one by one with a long body such as a belt for safe movement. [Means for solving the problem]

[0005] The sling described in claim 1 comprises: A hoist for suspending a cylindrical body while holding it vertically, a support table on which a cylindrical body is placed on an upper surface and on which a long body is hung on a lower surface; an annular holder that is disposed at the top of a cylindrical body and that holds the elongated body that is guided from the mounting table to the top of the cylindrical body by inserting the elongated body therethrough; The present invention is characterized by being provided with the following:

[0006] The sling described in claim 2 comprises: A hoist for suspending a cylindrical body while holding it vertically, A mounting base on which the cylindrical body is placed and on which the two long bodies are hung so as to cross each other; an annular holder that is disposed at the top of a cylindrical body and that holds the four ends of the two elongated bodies that are led from the mounting table to the top of the cylindrical body by inserting them therethrough; The present invention is characterized by being provided with the following:

[0007] The sling described in claim 3 is the sling described in claim 2, The mounting table is Four placement sections arranged in a cross shape around which the two intersecting elongated bodies are hung; a wall portion provided on the placement portion so as to protrude downward and surrounding the two elongated bodies along a longitudinal direction; a friction reducing portion provided at an end of the mounting portion and adapted to engage the elongated body extending from the mounting portion when the elongated body hangs a cylindrical body; a support portion provided at a lower end of the wall portion in the placement portion along a width direction of the elongated bodies and configured to support the two elongated bodies inside the placement portion; The present invention is characterized in that it has the following features.

[0008] The sling described in claim 4 is the sling described in claim 2, The holder is an outer annular portion having an inner diameter smaller than an outer diameter of the cylindrical body; Four inner rings are provided at equal intervals inside the outer ring and hold the four ends of the two inserted long bodies; The present invention is characterized in that it has the following features. Effect of the Invention

[0009] When using the hoist described in claim 1, a cylinder is placed in a vertical position on the top surface of the mounting table, and both ends of the long body hung on the bottom surface of the mounting table are guided along the circumferential surface of the cylinder to the top. Next, the long body is inserted from bottom to top through a holder placed at the top of the cylinder, and the ends of the long body are hung on a hook of a hoist or the like. As a result, the long body comes into contact with the inner surface of the holder placed at a predetermined position near the top of the cylinder and is narrowed toward the top of the cylinder, so that it adheres closely to the cylinder from the bottom to the top and is difficult to come off. By moving the hook by operating the hoist, the cylinder can be safely moved to any position while maintaining a stable vertical hanging position.

[0010] When using the hoist described in claim 2, a cylinder is placed in a vertical position on the top surface of the mounting table, and the four ends of the two long bodies that are crossed and hung on the bottom surface of the mounting table are guided along the circumferential surface of the cylinder to the top. Next, the long bodies are inserted from bottom to top through the holder placed at the top of the cylinder and hung on the hook of the hoist. As a result, the two long bodies come into contact with the inner surface of the holder placed at a predetermined position near the top of the cylinder and are squeezed toward the top of the cylinder, so that they are tightly attached from the bottom to the top at four positions on the circumferential surface of the cylinder and are difficult to come off. By moving the hook by operating the hoist, the cylinder can be safely moved to any position while maintaining a stable vertical hanging position.

[0011] When using the hoisting tool described in claim 3, two long bodies are hung in a cross-shaped state on four mounting sections of a mounting table arranged in a cross shape. In this case, if the mounting table is turned over with the top surface facing down so that the inside of the wall section of the mounting table can be seen, the work of passing the long bodies between the walls of the mounting section becomes easier. After passing the long bodies through the mounting sections, the mounting table is turned over to place the cylindrical body on the top surface, but since the long bodies in the mounting sections are supported by the support sections provided along the width direction of the long bodies, they are unlikely to come off the mounting sections. In addition, since the wall sections of the mounting sections are provided to protrude so as to surround the long bodies along the length direction, the long bodies will not come off the mounting sections when the cylindrical body is lifted. These wall sections increase the strength of the mounting sections and the mounting table as a whole. In addition, when lifting the cylindrical body, the long body protruding from the end of the support part gets caught on the friction reduction part provided at the end of the support part, changes direction, and is pulled toward the cylindrical body above. However, the friction applied to the long body from the friction reduction part is small, and even if a load corresponding to the weight of the cylindrical body is applied to the long body, there is little possibility that the long body will be damaged.

[0012] When using the hoisting tool described in claim 4, the holder is placed so as to be approximately concentric with the top of the cylinder. The inner diameter of the outer ring of the holder is smaller than the outer diameter of the cylinder, so the holder will not fall off the cylinder. The four ends of the two long bodies that are crossed and hung around the underside of the mounting table are guided along the circumferential surface of the cylinder to the top, and are then inserted into the four inner rings of the holder from below to above, and hung on the hook of a hoist. When the cylinder is suspended, the two long bodies come into contact with the inner ring of the holder near the top of the cylinder and are squeezed upward toward the cylinder, preventing the holder from rising upward, so that the holder is held in a predetermined position near the top of the cylinder. [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 is a front view of a cylinder suspended by a suspension tool according to an embodiment. [Diagram 2] FIG. 2 is a bottom view of a cylinder suspended by a suspension tool according to an embodiment. [Diagram 3]FIG. 2 is a plan view of a cylinder suspended by a suspension tool according to an embodiment. [Figure 4] FIG. 2 is a bottom view of a mounting base which is a component of the hanging tool of the embodiment. [Diagram 5] 5 is a cross-sectional view taken along line VV in FIG. 4. [Figure 6] FIG. 2 is a plan view of a holder which is a component of the hanging device of the embodiment. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. [Figure 8] 13A to 13C are diagrams showing the steps of preparing a mounting base and a sling in the process of attaching the hanging device of the embodiment to a cylinder. [Figure 9] 13A to 13C are diagrams showing a process of passing a sling through a mounting base in the process of attaching the hanging tool of the embodiment to a cylinder. [Figure 10] 11A and 11B are diagrams showing a process of placing a cylinder on a mounting table through which a sling is passed in the process of attaching the hanging device of the embodiment to the cylinder. [Figure 11] 13 is a diagram showing a process of attaching the embodiment of the hanging device to a cylinder, in which the cylinder is placed on a platform through which a sling is passed, and then the sling is gathered above the cylinder. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] A hoisting tool according to an embodiment and a procedure or work for hoisting a cylinder using the hoisting tool will be described with reference to Figs. 1 to 11. This hoist is an instrument for suspending a cylinder in a vertical position, i.e., stably holding the cylinder in a position in which its central axis is vertical (vertical position), and can be effectively used for handling gas cylinders, such as lifting the cylinder to an upper position, lowering it to a lower position, or moving it horizontally while suspended.

[0015] In the present invention and the embodiments, the cylindrical body refers to an object having at least a part of its outer shape in a cylindrical shape, regardless of whether the inside is solid or hollow. That is, it may be a columnar mass or a hollow cylinder. It may also be a hollow cylinder filled with a substance, or a device containing an internal mechanism or the like inside a cylindrical housing.

[0016] In this embodiment, the cylindrical body is assumed to be a hollow cylindrical container, and as a more specific example, a gas cylinder, which is a pressure container filled with various high-pressure gases including liquefied gas, will be taken as an example.

[0017] Fig. 1 is a front view showing a state in which a suspending tool 1 of the embodiment is attached to a gas cylinder 2 and the gas cylinder 2 is suspended from a hook 3, Fig. 2 is a bottom view of Fig. 1 showing a mounting base 4, and Fig. 3 is a plan view of Fig. 1 showing a holder 5. In Fig. 3, the outline of the gas cylinder 2 is indicated by a dashed line. First, the structure of the hoist 1 will be described with reference to Figs. 1 to 3. The hoist 1 includes a mounting base 4 (see Figs. 1 and 2) on which the gas cylinder 2 is mounted in a vertical position, a holder 5 (see Figs. 1 and 3) that fits over the valve cover 2a at the top of the gas cylinder 2, and two long nylon slings 6 (see Figs. 1 to 3; hereinafter, simply referred to as slings 6) that connect the mounting base 4 and the holder 5. As shown in Fig. 2, the two slings 6 cross each other on the underside of the mounting base 4, and as shown in Figs. 1 and 3, the four ends of the two slings 6 are guided above the gas cylinder 2 and hooked onto the hook 3 through the holder 5. In this state, by moving the hook 3 with the driving arm of the hoist, the gas cylinder 2 can be raised and lowered while stably held in a vertical position, or moved to any position.

[0018] The structure of the mounting table 4 will be described with reference to FIGS. As shown in Fig. 4, the mounting table 4 is a steel plate having the necessary rigidity, and has four mounting parts 8 arranged in a cross shape and integrated at the center. As shown in Figs. 4 and 5, four pairs of mounting parts 8, totaling eight long sides, are provided with steel wall parts 9 protruding downward (toward the viewer in Fig. 4), and the lower surfaces of the four mounting parts 8 arranged in a cross shape are surrounded by four wall parts 9 connected at right angles. These wall parts 9 increase the strength of each mounting part 8 and the mounting table 4 as a whole. As will be described in detail later, the wall parts 9 are provided protruding so as to surround the elongated body along the length direction (see Fig. 2), so that the sling 6 will not come off the mounting parts 8 when the gas cylinder 2 is lifted.

[0019] 4 and 5, a round bar-shaped friction reducer 10 that is parallel to the short side direction (width direction) of the support part 8 is attached to the end of the longitudinal direction of the support part 8. Although details will be described later, when lifting a cylindrical body, the sling 6 protruding from the end of the support part 8 gets caught on the friction reducer 10 (see FIG. 2) and is pulled upward toward the cylindrical body, but since the friction applied to the sling 6 by the friction reducer 10 is small, the possibility of the sling 6 being damaged is small.

[0020] 4 and 5, at a position about 1 / 3 of the longitudinal length from friction reduction section 10 toward the center of the cross, a round bar-shaped support section 11 that is parallel to the short side (width) of mounting section 8 is attached between opposing walls 9. Details will be described later, but when attaching sling 1 to gas cylinder 2, sling 6 is passed through mounting base 4, which is turned upside down, and then turned over. At this time, sling 6 inside mounting section 8 is supported by support section 11 (see FIG. 2), so it is unlikely to come off mounting base 4.

[0021] The structure of the holder 5 will be described with reference to FIGS. As shown in Fig. 6 and Fig. 7, the holder 5 has an annular outer ring portion 12 made of a steel plate having necessary rigidity. As can be seen from the fact that the cross-sectional shape of the outer ring portion 12 in the VII-VII section shown in Fig. 6 is rectangular as shown in Fig. 7, the outer ring portion 12 has a shape and structure like a hollow cylinder cut into rings by two sections perpendicular to the central axis. On the inner surface of the outer ring portion 12, inner ring portions 13 made of a steel plate are attached at intervals of 90° about the central angle. The inner ring portion 13 is an arc-shaped part obtained by cutting an annular member having an outer diameter slightly less than half that of the outer ring portion 12 so as to have a size of about 1 / 3 of the size at the central angle.

[0022] Since the inner diameter of the outer ring portion 12 is smaller than the outer diameter of the gas cylinder 2, when the holder 5 is placed on the top of the gas cylinder 2 to attach the hoisting tool 1 to the gas cylinder 2, the holder 5 does not insert the gas cylinder 2 outward and fall. Also, the inner ring portion 13 is a portion through which the four slings 6 are inserted from bottom to top in the holder 5 placed on the top of the gas cylinder 2 when suspending the gas cylinder 2 with the hoisting tool 1, and since the four slings 6 come into contact with the inner ring portion 13, the position of the holder 5 is maintained when the gas cylinder 2 is hoisted.

[0023] 8 to 11 and 1 to 3, an operation of attaching the suspender 1 of the embodiment to the gas cylinder 2 and suspending it from the hook 3 to move it will be described. As shown in Fig. 8, in the preparation process for attaching the sling 1 and sling 6 to the gas cylinder 2, the mounting table 4 is placed with its upper surface facing up on the work surface of the workshop (a plane parallel to the paper surface of Fig. 8). Since a wall portion 9 is attached facing downward to the underside of the mounting table 4, a gap is generated between the end of each mounting portion 8 of the mounting table 4 and the work surface, the height of which is equal to the wall portion 9, although this is not shown in Fig. 8. Two slings 6 of an appropriate length are prepared, and the slings 6 are placed adjacent to the gap and parallel to the longitudinal direction for each pair of mounting portions 8 that have the same longitudinal direction. Both ends of the sling 6 form loop-shaped locking portions 6a.

[0024] As shown in FIG. 9, a sling 6 is passed through each of a pair of mounting portions 8,8 that are aligned in the same longitudinal direction, so that the locking portions 6a,6a at both ends of the sling 6 are positioned on both outer sides of the pair of mounting portions 8,8.

[0025] 9, sling 6 is inserted into mounting portion 8 with mounting table 4 facing up, but if mounting table 4 is turned over so that the top face is facing down (the working surface side) and the inside of wall portion 9 of mounting table 4 is visible, the work of passing sling 6 between wall portions 9 of mounting portion 8 becomes easier. In this case, after passing sling 6 through mounting portion 8, mounting table 4 is turned over to place gas cylinder 2 on its upper surface, but sling 6 inside mounting portion 8 is supported by supports 11 provided along the width direction of sling 6, and therefore is unlikely to come off mounting portion 8.

[0026] As shown in FIG. 10, the gas cylinder 2 is placed in the center of the upper surface of the mounting table 4 through which the two slings 6 are passed.

[0027] As shown in FIG. 11, after the cylinder is placed on the table 4 through which the slings 6 are passed, the four ends of the two slings 6 are pulled up above the cylinder and bundled together.

[0028] As shown in FIG. 1, the four ends of the two slings 6 that are crossed and wound around the underside of the mounting table 4 are guided along the circumferential surface of the gas cylinder 2 to the top. As shown in FIG. 1 and FIG. 3, the holder 5 is arranged so as to fit over the cover 2a on the top of the gas cylinder 2, and the four ends of the sling 6 are passed through the four inner rings 13 from below the holder 5 and guided further upward, and the four locking portions 6a of the sling 6 are hung on the hook 3 of the hoist as shown in FIG. 1. As shown in FIG. 3, the four ends of the two slings 6 come into contact with the inner rings 13 of the holder 5 arranged near the cover on the top of the gas cylinder 2, and are squeezed upward of the gas cylinder 2 as shown in FIG. 1. Therefore, the sling 6 below the holder 5 is in close contact from the bottom to the top at four positions spaced apart in the circumferential direction on the circumferential surface of the gas cylinder 2, making it difficult to come off the gas cylinder 2.

[0029] As can be seen from the outer shape of the gas cylinder 2 shown by the dashed line in Fig. 3, the inner diameter of the outer ring portion 12 of the holder 5 is smaller than the outer diameter of the gas cylinder 2, so that the holder 5 will not fall off the gas cylinder 2 by inserting it outside. In addition, in the state in which the gas cylinder 2 shown in Fig. 1 is suspended, the four ends of the two slings 6 abut against the inner ring portion 13 of the holder 5 near the top of the gas cylinder 2 as shown in Fig. 3 and are narrowed toward the top of the gas cylinder 2, preventing the holder 5 from rising upward, so that the holder 5 is securely held in a predetermined position (near the cover) near the top of the gas cylinder 2.

[0030] 2, the wall 9 of the mounting portion 8 is provided so as to protrude and surround the sling 6 along the length direction, so that the sling 6 will not come off the mounting portion 8 when the gas cylinder 2 is hoisted. When the gas cylinder 2 is hoisted, the sling 6 protruding from the end of the mounting portion 8 is caught by the friction reduction portion 10 provided at the end of the mounting portion 8 as shown in FIG. 2, changes direction, and is pulled toward the gas cylinder 2 above. However, the friction applied to the sling 6 from the round bar-shaped friction reduction portion 10 is small, so that even if a load corresponding to the weight of the gas cylinder 2 is applied to the sling 6, the possibility of the sling 6 being damaged is small.

[0031] As shown in Figure 1, if a sling 6 attached to a gas cylinder 2 via a hoist 1 is hung on a hook 3 of a hoist, the gas cylinder 2 can be safely moved to any position by operating the hoist to move the hook 3 while maintaining a stably suspended vertical position.

[0032] In the above-described embodiment, the gas cylinder 2 is taken as an object to be hoisted using the hoist 1, but this is merely one example, and the present invention can of course be applied to any cylindrical container for storing any substance. Also, the object of the present invention does not have to be a container, and can be any object with at least a part of its outer shape being cylindrical, and the present invention can also be used to move, for example, steel pipes, concrete cylinders, concrete pipes, etc.

[0033] In the embodiment, the sling 6 made of nylon is used as the long body for hoisting the gas cylinder 2 with the hoist 1, but there is no reason to limit the material to nylon, and other materials may be used as long as the required strength is obtained. For example, if a flame-retardant or heat-resistant sling made of aramid fiber is used, safety will be improved when suspending a gas cylinder filled with a flammable gas. There is also no reason to limit the material to a sling, and other long bodies such as belts, ropes, strings, and chains can also be used. [Explanation of symbols]

[0034] 1. Hanging device 2...A gas cylinder is an example of a cylindrical object. 2a…Gas cylinder cover 3. Hook 4…Placement table 5...Holder 6... Nylon sling as a long body (sling) 6a…Sling fastening part 8…Placement section 9...Wall part 10…Friction reduction section 11...Support part 12...Outer ring part 13…Inner ring

Claims

1. A hoist for suspending a cylindrical body while holding it vertically, a support table on which a cylindrical body is placed on an upper surface and on which a long body is hung on a lower surface; an annular holder that is disposed at the top of a cylindrical body and that holds the elongated body that is guided from the mounting table to the top of the cylindrical body by inserting the elongated body therethrough; A sling characterized by comprising:

2. A hoist for suspending a cylindrical body while holding it vertically, a support table on which the cylindrical body is placed and on which the two long bodies are hung so as to cross each other; an annular holder disposed at the top of a cylindrical body and configured to hold the four ends of the two elongated bodies led from the mounting table to the top of the cylindrical body; A sling characterized by comprising:

3. The mounting table is Four placement sections arranged in a cross shape around which the two intersecting elongated bodies are hung; a wall portion provided on the placement portion so as to protrude downward and surrounding the two elongated bodies along a length direction; a friction reducing portion provided at an end of the mounting portion and adapted to engage the elongated body extending from the mounting portion when the elongated body hangs a cylindrical body; a support portion provided at a lower end of the wall portion of the placement portion along a width direction of the elongated bodies and configured to support the two elongated bodies inside the placement portion; 3. The sling according to claim 2, further comprising:

4. The holder is an outer annular portion having an inner diameter smaller than an outer diameter of the cylindrical body; four inner ring portions provided at equal intervals inside the outer ring portion and holding four ends of the two inserted elongated bodies; 3. The sling according to claim 2, further comprising:

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