JP5366355B2 - Hanging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hoisting device capable of changing the hoisting span in an extensive range according to the length of a long object, reducing the weight of the device, and simplifying the control of a hoisting span. <P>SOLUTION: The hoisting device 10 is hoisted by a crane for use, and has a pair of slinging units 11, 12 capable of hoisting both ends of a long object, and changing the span of the pair of slinging units 11, 12 according to the length of the long object. The hoisting device comprises a fixed beam 15 to be lowered by the crane, first and second telescopic beams 16, 17 advancing/retracting symmetrically in the right-to-left direction with a center portion of the fixed beam 15 being a reference, a driving means 13 which is mounted on the fixed beam 15 to allow the first and second telescopic beams 16, 17 to be synchronously advanced/retracted, and the slinging units 11, 12 provided on fore ends of the first and second telescopic beams 16, 17. Major portions of the first and second telescopic beams 16, 17 are accommodated within the length of the fixed beam 15 when they are contracted. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

The present invention relates to a hanging device used for transporting a long object whose length varies in a large range.

Conventionally, in the work of stacking a large or small length transported object such as an H-shaped steel, a steel pipe, or a seamless pipe, that is, a transported object having a large variation in length in a narrow ship, or draining water from the ship, If the beam is longer than the suspended object, the beam end interferes with the wall of the hold, which hinders work. For this reason, the length of the suspended beam can be adjusted according to the length of the object to be transported. There is a need for a hanging device with a large range. As such a hanging device, for example, the telescopic beam type hanging device described in Patent Document 1 is suspended from a crane or the like and used.
The lifting device includes a main beam suspended horizontally by a crane, a pair of telescopic beams provided to be movable in the longitudinal direction of the main beam via a rack and pinion drive mechanism, and a motor drive mechanism. Each pair of telescopic beams is provided with a pair of trolleys that can be moved in the longitudinal direction, and a suspension provided on each pair of trolleys. Compared to the length of the main beam. And a small suspension span can be achieved.

Japanese Utility Model Publication No. 5-42283 (FIGS. 1 to 3)

However, since the main beam is provided with a pair of telescopic beams and a pair of carts is provided for the pair of telescopic beams, the configuration is complicated, the weight of the apparatus is increased, and the pair of telescopic beams and Since the paired carts move synchronously, the control of the suspension span is complicated.

The present invention has been made in view of such circumstances, it is possible to change the span suspension over a wide range depending on the length of the long member, is lightweight, yet, a hanger device can be simplified control is suspended span The purpose is to provide.

The hanging device according to the present invention that meets the above object is used by being suspended by a lifting machine, and has a pair of sling portions that can be hung on both sides of a long object. Is a hanging device that can be changed according to the length of the long object,
A fixed beam that can be suspended by the lifting machine, first and second telescopic beams that move back and forth synchronously with respect to a central portion of the fixed beam, and a first beam that is attached to the fixed beam. Drive means for advancing and retreating the second telescopic beam in synchronization, and a pair of sling portions provided at the distal end portions of the first and second telescopic beams,
When shortening the first and second telescopic beams, the main parts of the first and second telescopic beams are accommodated within the length of the fixed beam,
First and second sprocket wheels are provided on both sides in the longitudinal direction of the fixed beam, endless chains are spanned over the first and second sprocket wheels, and the base sides of the first and second telescopic beams are the endless Coupled to the opposite position of the chain, the first and second telescopic beams are moved forward and backward in synchronization with the movement of the endless chain;
The drive shaft provided with the first sprocket wheel has a ratchet wheel fixed to the drive shaft, a pawl that can be hooked on the ratchet wheel, and an air cylinder that operates the pawl. And a one-way clutch mechanism that prevents the first and second telescopic beams from moving outward due to the hanging angle and weight of the elongated object suspended through the sling. And
In addition, first and second front guide rollers for supporting the first and second telescopic beams from below through biasing members are provided on the inner lower portions on both sides in the longitudinal direction of the fixed beam. The first and second telescopic beams are respectively provided with first to fourth rollers that roll in contact with the fixed beam at the upper and lower portions on the base side thereof, and the first and second telescopic beams. The first and third rollers attached to the base upper part of the beam abut against the fixed beam via a biasing member,
Further, first and second load receiving portions are provided at the inner lower portions on both sides in the longitudinal direction of the fixed beam, and third and fourth load receiving portions are provided at the base upper portions of the first and second telescopic beams. Loads that are respectively provided and the first and second front guide rollers and the urging members of the first and third rollers bend at a large load, and are generated in the first and second telescopic beams. Are directly supported by the first to fourth load receiving portions.

In the hanging device according to the present invention, the fixed beam includes first and second main beam members which are arranged in parallel with a space therebetween and connected by a plurality of first connecting members. The telescopic beams have first and second outer beam members arranged on the outer sides in the width direction of the first and second main beam members and connected by a plurality of second connecting members, respectively. The two telescopic beams are preferably arranged on the inner side in the width direction of the first and second main beam members.

In the hanging device according to the present invention, the first and second expansion and contraction are further on the inner side in the longitudinal direction than the positions where the first and second load receiving portions are provided at both longitudinal positions of the fixed beam. You may provide the 5th, 6th load receiving part which receives the load which generate | occur | produces at the time of a load in the state which the beam passed through the said 1st, 2nd load receiving part, and was accommodated inside further.

In the hanging device according to the present invention, the fixed beam is provided with an engine generator, the electric power is supplied to the driving means by the engine generator, and compressed air generated by an air compressor driven by the engine generator. May be supplied to an air actuator of a ball removal hook of the pair of slinging parts via a hose and a solenoid valve so that power supply from the hoisting machine is unnecessary, and operation from an arbitrary place may be performed by a radio control device.

The suspension device according to any one of claims 1 to 4, wherein the distal end portions of the first and second telescopic beams that advance and retreat in a symmetrical manner by the driving means with reference to the central portion of the fixed beam that can be suspended by the lifting machine. A pair of sling portions is provided in each, and when the first and second telescopic beams are shortened, the main portions of the first and second telescopic beams are accommodated within the length of the fixed beam. The suspension span can be changed in a large range according to the length of the long object, and the weight of the apparatus can be reduced.

In particular, in the hanging device according to claim 2, the fixed beam includes first and second main beam members arranged in parallel with a gap therebetween, and the first telescopic beam is the first and second main beams. Since it has the 1st and 2nd outer beam material respectively arrange | positioned at the width direction outer side of the beam material, and the 2nd expansion-contraction beam is arrange | positioned at the width direction inner side of the 1st, 2nd main beam material, When the first and second telescopic beams are contracted, they do not interfere with each other even if they are contracted to a position where their bases overlap in front view, so that the length of the telescopic beams can enter the fixed beam even in the fully extended state. Since the load and stress generated in each beam can be reduced, the entire apparatus can be made compact and the expansion / contraction span range can be greatly adjusted.

In the hanging device according to claim 1, the first and second extension / contraction at opposite positions of the endless chain spanned by the first and second sprocket wheels provided on both sides in the longitudinal direction of the fixed beam. Since the base side of the beam is connected and the first and second telescopic beams are advanced and retracted in synchronization with the movement of the endless chain, the driving means can be simplified and complicated control is not required.

In the suspension device according to claim 1, the drive shaft provided with the first sprocket wheel is provided with a one-way clutch mechanism for preventing the first and second telescopic beams from moving forward. In the state where the second telescopic beam is retracted (reduced), the first and second telescopic beams are pulled out in the forward (expanding) direction by the hanging angle and the own weight of the long object suspended through the sling jig. Can be prevented.

In the hanging device according to claim 1, the first and second telescopic beams are provided by first and second front guide rollers provided on the inner lower portions of both sides in the longitudinal direction of the fixed beam via biasing members. The first and third rollers that are supported from below and attached to the upper bases of the first and second telescopic beams are in contact with the fixed beam via the biasing member. The traveling resistance of the telescopic beam 2 is smaller than that of sliding contact, so that the driving means can be made compact and power consumption can be reduced. Moreover, if each urging member waits for the force generated by its own weight of the telescopic beam portion plus some remaining force, the stress generated in the first and third rollers and the contact portion is compared with that during loading. Thus, the first and third roller diameters can be made small and compact because they can be controlled small. When the first and second telescopic beams are contracted and the base side portion becomes heavy, the first and second telescopic beams are respectively replaced by the second and fourth rollers instead of the first and third rollers. Can be supported.

In the hanging device according to claim 1, the first and second load receiving portions are provided on the inner lower portions on both sides of the fixed beam, and the third and fourth are provided on the proximal upper portions of the first and second telescopic beams. Load receiving portions are provided, respectively, and when the urging members of the first and second front guide rollers and the first and third rollers are bent at the time of loading, the load generated in the first and second telescopic beams is The first to fourth load receiving portions are supported, and thereafter, the load on the roller is only equivalent to the reaction force of the urging member. Since the first to fourth load receiving portions are in surface contact, the frictional resistance is larger than that of the roller, and the telescopic beam is hardly moved from the load side, which can contribute to safe lifting work.

According to a third aspect of the present invention, the first and second telescopic beams are fixed further on the inner side in the longitudinal direction than the positions where the first and second load receiving portions are provided at both side positions of the fixed beam. Since the fifth and sixth load receiving portions that receive the load generated during loading in the housed state are provided in the beam, the loads generated in the first and second telescopic beams during loading are the third to sixth loads. It can be directly supported by the load receiver.
In the hanging device according to claim 4, the fixed beam is provided with an engine generator, the electric power is supplied to the driving means by the engine generator, and the compressed air generated by the air compressor driven by the engine generator. Is supplied to an air actuator of a ball removing hook of a pair of slinging parts via a hose and a solenoid valve so that power supply from the hoist is unnecessary. In addition, since the radio control device can be operated from any place, the operability is improved. As a result, equipment related to the apparatus is not required on the lifting machine side, so that it can be installed and used in a plurality of lifting machines without performing specific equipment work.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
Here, FIGS. 1A and 1B are a plan view and a plan view, respectively, of a hanging device according to an embodiment of the present invention, and FIG. 2 is a side view of the hanging device. 3 is an explanatory view showing the main configuration of the hanging device, FIG. 4 is a sectional view taken along the line AA in FIG. 1B, and FIG. 5 is a sectional view taken along the line BB in FIG. 6 (A) and 6 (B) are a plan view and a front view for explaining the joint portion of the endless chain, respectively, and FIGS. 7 (A) and 7 (B) are diagrams in which the first front guide roller is mounted, respectively. FIG. 8A is a plan view, a front view, and FIG. 8B are a front view, a front view, and a front view, respectively, of a second front guide mechanism that is equipped with a second front guide roller. 9 (A) and (B) are a front view and a side view of the first roller mechanism equipped with the first roller, respectively, and FIGS. 10 (A) and (B) are each equipped with a third roller. Side view of the third roller mechanism, a front view.

As shown in FIGS. 1 to 3, a lifting device 10 according to an embodiment of the present invention is suspended from a hanging hook of an all-weather berth crane (hereinafter simply referred to as a crane) which is an example of a lifting machine (not shown). A pair of sling portions 11 that are used in such a manner that both sides of a long object (not shown) such as an H-shaped steel, a steel pipe, and a seamless pipe can be suspended via a sling jig (not shown), 12 and the hanging spans of the pair of sling portions 11 and 12 are configured to be changeable according to the length of the long object.

The lifting device 10 includes a fixed beam 15 that can be suspended by a crane, first and second telescopic beams 16 and 17 that move back and forth in a symmetrical manner with respect to the central portion of the fixed beam 15, and a fixed beam 15. Attached to the drive means 13 for advancing and retreating the first and second telescopic beams 16 and 17 synchronously, and a pair of slings provided respectively at the distal ends of the first and second telescopic beams 16 and 17 When the first and second telescopic beams 16 and 17 are shortened (the shortened position is indicated by a two-dot chain line in FIG. 1), the first and second telescopic beams 16 and 17 are included. Is housed within the length of the fixed beam 15.

The fixed beam 15 can be hung from the hanging hook of the crane via detachable hook hanging pins 14 and 14a, and the length P of the fixed beam 15 is, for example, 4000 to 8000 mm (in this embodiment). 6500 mm). The length F of each of the first and second telescopic beams 16 and 17 is, for example, 3000 to 7000 mm (5600 mm in the present embodiment).

The hanging span V of the sling portions 11 and 12 that form a pair at the shortened position of the first and second telescopic beams 16 and 17 is, for example, 3000 to 7000 mm (5300 mm in the present embodiment). The advancing / retreating stroke L is, for example, 3000 to 5000 mm (4000 mm in the present embodiment). These will be described in detail below.

As shown in FIG. 1 to FIG. 5, the fixed beam 15 is arranged with a gap K in the width direction, and is a pair of first and second main beams connected by a plurality of first connecting members 18 to 24. H-shaped steel materials 28 and 29 (in this embodiment, H588 × 300), which are examples of materials, are provided.

As shown in FIGS. 1A and 1B, the first connecting member 18 connects the upper ends and the lower ends of the H-shaped steel members 28 and 29 with two rod-shaped steel members, and the first connecting member 18 The members 20 to 22 are four bar-shaped steel members and are formed in a frame shape around the H-shaped steel materials 28 and 29. The first connecting members 19 and 23 are respectively connected to two frame members 25 and 26 arranged at intervals in the longitudinal direction of the fixed beam 15 by connecting members, and further, roller mounting bases 27 and 27a are provided below. Is formed. The first connecting member 24 connects the upper ends of the H-shaped steel materials 28 and 29 with one bar-shaped steel material, and the two bar-shaped steel materials hung down at both ends of the steel material H The outside of the shape steel materials 28 and 29 is reinforced.

As shown in FIG. 1 (A), FIG. 4 and FIG. 5, the second telescopic beam 17 is disposed inside the pair of H-shaped steel materials 28 and 29 in the width direction, and the first telescopic beam 16 is I-shaped steel materials 30 and 31 (in this embodiment, I450 × 175 × 13) as an example of a pair of first and second outer beam materials disposed on the outer side in the width direction of the H-shaped steel materials 28 and 29 to be ) And a pair of I-shaped steel materials 30 and 31, and a second connecting member 16 a for connecting the pair of I-shaped steel materials 30 and 31 and another second connecting member (not shown).

The second telescopic beam 17 has a gap G in the width direction, the same size as the I-shaped steel materials 30 and 31, and a pair of I-shaped steel materials 32 arranged at the same height level as the I-shaped steel materials 30 and 31. , 33, connecting both ends of the I-shaped steel materials 32, 33, and connecting the connecting plate 34 whose outer shape is formed in accordance with the cross-sectional outer shape of the I-shaped steel materials 32, 33 and the intermediate portion of the I-shaped steel materials 32, 33 And a connecting member (not shown).

As shown in FIGS. 1B, 3, and 4, an electric motor 35 with a speed reducer that constitutes a part of the driving means 13 is provided on the upper side of the fixed beam 15 in the longitudinal direction (the slinging portion 11 side). Is fixed via an attachment base, and a sprocket wheel 37 is provided on the output shaft 36 of the electric motor 35 protruding to the width direction H-shaped steel material 28 side of the fixed beam 15.

Below the sprocket wheel 37, there is horizontally provided a drive shaft 42 that passes through the webs 38 and 39 of the H-shaped steel materials 28 and 29 of the fixed beam 15 and is rotatably supported via bearings 40 and 41. A sprocket wheel 43 is provided at the position of the drive shaft 42 corresponding to the sprocket wheel 37. An endless chain 44 is spanned between the sprocket wheel 37 and the sprocket wheel 43. In addition, the part which interferes with attachment of the endless chain 44 of the upper side flange 28b of the H-shaped steel material 28 is notched.

As shown in FIG. 4, the first shaft which is a pair for driving the first telescopic beam 16 is positioned outside the bearings 40 and 41 of the drive shaft 42 in the axial direction and inside the I-shaped steel materials 30 and 31. Sprocket wheels 45 and 46 are provided, and on the inner side in the axial direction from the bearings 40 and 41 of the drive shaft 42, first sprocket wheels 47 and 48 that form a pair for driving the second telescopic beam 17 are provided. Is provided. The first sprocket wheels 45 to 48 have the same pitch diameter and the same number of teeth.
As shown in FIGS. 3 and 4, a ratchet wheel 42 a is fixed between the bearing 41 of the drive shaft 42 and the first sprocket wheel 48, and a pawl (ratchet) that can be hooked on the ratchet wheel 42 a. An air cylinder (not shown) that operates the claw 42 b and the claw 42 b is attached to the H-shaped steel material 29 of the fixed beam 15. A ratchet mechanism that is an example of a one-way clutch mechanism that includes a ratchet wheel 42a, a claw 42b, and an air cylinder and prevents the first and second telescopic beams 16 and 17 from extending. With the first and second telescopic beams contracted, the first and second telescopic beams are moved by the hanging angle (for example, 45 to 60 degrees) and the own weight of the long object suspended through the sling jig. Although it is going to be pulled out in the expanding direction, this ratchet mechanism can prevent it from being pulled out.

As shown in FIG. 1 (B), FIG. 4 and FIG. 5, on the other side in the longitudinal direction of the fixed beam 15 (in the vicinity of the first connecting member 23), the webs 38 and 39 of the H-shaped steel materials 28 and 29, respectively, Driven shafts 51 and 52 that pass through the webs 38 and 39 and are rotatably supported via bearings 49 and 50 are horizontally provided at the same height level as the drive shaft 42. Second sprocket wheels 53, 54 corresponding to the first sprocket wheels 45, 47 are provided on both axial sides of the driven shaft 51, and first sprocket wheels 46, 54 are provided on both axial sides of the driven shaft 52. Second sprocket wheels 55 and 56 corresponding to 48 are provided. The second sprocket wheels 53 to 56 have the same pitch diameter as the first sprocket wheels 45 to 48 and the same number of teeth.

An endless chain 57 (58) is stretched between the first sprocket wheel 45 (46) and the second sprocket wheel 53 (55). The first sprocket wheel 47 (48) and the second sprocket wheel An endless chain 59 (60) is stretched between 54 (56).

As shown in FIG. 1 (B), FIG. 3 and FIG. 6 (A), (B), the endless chain 59 (the same applies to 60) has both ends of one chain member connected to a plate-like connecting metal 64. The length is adjustable via length adjusting bolts 64a and 64b. The connecting metal fitting 64 is attached to the base web 61 (62) of the I-shaped steel 32 (33) of the second telescopic beam 17 via four bolts 63. The length adjusting bolts 64a and 64b The tension of the endless chain 59 (60), that is, the degree of sagging at the center position between the first sprocket wheel 47 (48) and the second sprocket wheel 54 (56) of the endless chain 59 (60) can be adjusted. .

On the other hand, the endless chain 57 (58 is the same) has the same configuration as the endless chain 59 (60), and the connection fitting 67 of the endless chain 57 is the base of the I-shaped steel 30 (31) of the first telescopic beam 16. It is attached to the web 65 (66) on the side via bolts 63 (see FIGS. 1 and 3). The positions of the connecting fittings 67 and 64 shown in FIGS. 1 and 3 represent a state in which the first and second telescopic beams 16 and 17 are in the extended position.

With this configuration, by driving the electric motor 35 and rotating the drive shaft 42 forward and backward, the first and second telescopic beams 16 facing each other in synchronism symmetrically with respect to the central portion of the fixed beam 15, 17 can advance and retreat stroke L. The advance / retreat speed of the first and second telescopic beams 16 and 17 is, for example, 50 to 100 mm / sec, and is set to 80 mm / sec in the present embodiment.

As shown in FIGS. 1 (A), (B), FIG. 3, FIG. 4 and FIGS. 7 (A), (B), the mounting base 27 of the first connecting member 19 of the fixed beam 15 has a first A pair of first front guide rollers 69 for supporting the lower flanges 30a, 31a of the telescopic beam 16 from below, via a disc spring 68, which is an example of an urging member, from below, It is provided via mounting brackets 70 that are spaced apart in the width direction. A rectangular mounting plate 70a is provided at the lower end of the mounting bracket 70, and the mounting plate 70a is fixed to the mounting base 27 via four bolts 70b.

As shown in FIGS. 7A and 7B, the first front guide roller 69 has a letter-like shape as viewed from the side, with its central portion being rotatably supported by a mounting bracket 70 via a fixed shaft 71. The rotating arm 72 is rotatably attached to a fixed shaft 73 provided at one end of the rotating arm 72 via a bearing 74. A disc spring 68 is attached to the other end of the rotating arm 72 via a compression bolt 75. The rotating arm 72 is urged around the fixed shaft 71 in the arrow J direction (clockwise) by the disc spring 68. The bolt 70c is a stopper against the rotation arm 72 being urged in the J direction to rotate. The first front guide roller 69, the turning arm 72, the disc spring 68, the mounting bracket 70, and the like constitute a first front guide mechanism 69a.

As shown in FIGS. 1A, 1B, 3, 5 and 8A, 8B, the mounting base 27a of the first connecting member 23 of the fixed beam 15 has a second mounting A second front guide roller 77 that supports the lower flanges 32a and 33a of the I-shaped steel members 32 and 33 of the telescopic beam 17 from below through two sets of disc springs 76 as an example of an urging member is a mounting bracket. 78 is provided. A rectangular mounting plate 78a is provided at the lower end of the mounting bracket 78, and the mounting plate 78a is fixed to the mounting base 27a via five bolts 78b. The two bolts 78 c are rotation stoppers for the rotating arm 80.

As shown in FIGS. 8 (A) and 8 (B), the second front guide roller 77 is shaped like a letter when viewed from the side, with its central portion being rotatably supported by a mounting bracket 78 via a fixed shaft 79. The rotary arm 80 is rotatably attached to a fixed shaft 81 provided at one end portion of the rotary arm 80 via a bearing 82. Two sets of disc springs 76 are attached to the other end of the rotating arm 80 via compression bolts 83, respectively. The rotating arm 80 is urged around the fixed shaft 79 in the direction of arrow M (counterclockwise) by the disc spring 76. The second front guide roller 77, the turning arm 80, the disc spring 76, the mounting bracket 78, and the like constitute a second front guide mechanism 77a.

As shown in FIG. 1 (B), FIG. 3, FIG. 4 and FIG. 9 (A), (B), the first telescopic beam 16 is fixed to the base upper portion of the I-shaped steel 30 (31 is the same). A first roller 86 that abuts on the outer flange portion 84 of the upper flange 28b (29b) of the H-shaped steel material 28 (29) of the beam 15 from below via a coil spring 85 that is an example of an urging member is provided. Yes.

As shown in FIGS. 9A and 9B, the first roller 86 is supported by a mounting bracket 87 fixed to the upper side of the I-shaped steel material 30 via a fixed shaft 88 so as to be rotatable. As seen from the side, it is attached to a fixed shaft 90 provided at one end portion of the character-like turning arm 89 via a bearing 91 so as to be rotatable. A coil spring 85 is attached to the other end portion of the rotating arm 89 via a compression bolt 92.

The rotating arm 89 is urged around the fixed shaft 88 in the direction of arrow Y (counterclockwise) by the compressed coil spring 85, and can be rotated by a set bolt 93 that is adjustable in length provided on the mounting bracket 87. The rotation angle of the arm 89 is limited. The first roller 86, the turning arm 89, the coil spring 85, the mounting bracket 87, and the like constitute a first roller mechanism 86a.

As shown in FIG. 1 (B), FIG. 3, FIG. 4 and FIG. 9 (A), on the upper surface on the base side of the upper flange 30b (31b) of the I-shaped steel 30 (31 is the same) of the first telescopic beam 16 Is provided with a third load receiving portion 95 (95a) that directly supports the load generated in the first telescopic beam 16 when loaded. The contact portion of the third load receiving portion 95 is made of metal. The third load receiving portion 95 has a slight gap with the lower surface 94 of the outer flange portion 84 of the H-shaped steel material 28 of the fixed beam 15 when the first telescopic beam 16 is expanded and contracted.

As shown in FIGS. 1 (B), 3, 5, 10 (A), and (B), the fixed beam 15 is disposed on the base side upper part of the I-shaped steel members 32 and 33 of the second telescopic beam 17. A third roller 100 as a pair that comes into contact with the inner flange portions 96, 97 of the upper flanges 28b (29b) of the H-shaped steel members 28, 29 from below via coil springs 98, 99 which are examples of biasing members, 101 is provided.

As shown in FIGS. 10 (A) and 10 (B), the third rollers 100 and 101 that form a pair with hooks are attached to the upper side between the webs 61 and 62 of the I-shaped steel materials 32 and 33. Further, bearings 109 and 110 are respectively connected to fixed shafts 107 and 108 provided at one end portions of a pair of rotating arms 105 and 106 whose central portions are rotatably supported via fixed shafts 103 and 104, respectively. It is attached via a rotation. Coil springs 98 and 99 are attached to the distal ends of the rotating arms 105 and 106 via compression bolts 111 and 112, respectively.

The rotating arms 105 and 106 are urged around the fixed shafts 103 and 104 in the arrow Z direction (clockwise) by the compressed coil springs 98 and 99, and the lengths provided at the lower portion of the mounting bracket 102 can be adjusted. The turning angles of the turning arms 105 and 106 are limited by the set bolts 113 and 114. A third roller mechanism 100a is configured by the third rollers 100 and 101, the rotating arms 105 and 106, the coil springs 98 and 99, the mounting bracket 102, and the like.

As shown in FIG. 1 (B), FIG. 3 and FIG. 10 (B), the second telescopic beam is formed on the upper surface of the upper flange of the I-shaped steel members 32 and 33 of the second telescopic beam 17 when loaded. Fourth load receiving portions 116 and 116a that directly support the load generated in the motor 17 are provided. The contact portions of the fourth load receiving portions 116 and 116a are made of metal. The fourth load receiving portion 116 (116a) is slightly smaller than the lower surface 115 of the inner flange portions 96b and 97b of the upper flanges 28b and 29b of the H-shaped steel members 28 and 29 of the fixed beam 15 when the second telescopic beam 17 is expanded and contracted. It has a gap of.

In addition, the rotation positions of the first and second front guide rollers 69 and 77 and the first and third rollers 86 and 100 (101) are in an empty state, that is, a state in which a long object is not suspended. Then, the first and second telescopic beams 16 and 17 are respectively rotated by the first front guide roller 69 and the first roller 86, the second front guide roller 77 and the third roller 100 (101). It is set to be supported by movement.

As shown in FIGS. 1 and 3, the first and second telescopic beams 16 and 17 have first and second centering portions around the first and second front guide rollers 69 and 77 at the lower bases of the first and second telescopic beams 16 and 17. Second and fourth rollers 142 and 143 are provided to come into contact with the fixed beam 15 when the longitudinal inner sides of the telescopic beams 16 and 17 become heavy.

As shown in FIG. 4, on the lower surface of the lower flanges 30a, 31a of the I-shaped steel members 30, 31 of the first telescopic beam 16 that advances and retreats with respect to the fixed beam 15, the width of the first front guide roller 69 is shown. A pair of rod-shaped guide members 117 and 118 are attached at a distance T slightly wider than S (see FIG. 7A), and the first telescopic beam 16 is guided by the guide members 117 and 118. It has become.

As shown in FIG. 1B, FIG. 3 and FIG. 4, the outer side of the lower flanges 28a and 29a of the H-shaped steel materials 28 and 29 at one end in the longitudinal direction of the fixed beam 15 (position of the first connecting member 18). On the upper surface of the flange portion 119, first load receiving portions 120 and 121 made of metal that receives the load of the first telescopic beam 16 at the time of loading are provided.

Further, as shown in FIG. 4, guide members 122 and 123 are provided on the lower surface of the outer flange portion 84 of the upper flanges 28b and 29b of the H-shaped steel members 28 and 29 at both ends in the longitudinal direction of the fixed beam 15. A pair of rod-shaped guide members 124 and 125 with a gap U slightly wider than the width R of the guide members 122 and 123 are attached to the upper surfaces of the upper flanges 30b and 31b of the I-shaped steel members 30 and 31, respectively. , 125 guides the guide members 122, 123.

1B, as shown in FIGS. 3 and 5, the inner side of the lower flanges 28a and 29a of the H-shaped steel members 28 and 29 at the other longitudinal end of the fixed beam 15 (position of the first connecting member 24). On the upper surface of the flange portion 119a, a second load receiving portion made of metal that receives the load of the second telescopic beam 17 through the receiving seats 126, 127 provided on the lower surfaces of the I-shaped steel materials 32, 33 at the time of loading. 128 and 129 are provided.

With such a configuration, as shown in FIG. 3, when the load is applied, that is, in a state where a long object is suspended, the sling portions 11, 12 are the first load receiving portions 120, 121, the second load receiving portions 128, In the case of being outside of 129, the urging members of the first and second front guide rollers 69 and 77, the first and third rollers 86, 100 and 101 (disc springs 68 and 76, coil spring 85) The first and second telescopic beams 16 and 17 are respectively bent by the first load receiving portions 120 and 121 and the third load receiving portions 95 and 95a, the second load receiving portions 128 and 129, and the fourth load receiving portions 128 and 129, respectively. It is set to be supported by the load receiving portions 116 and 116a.

However, the first and second telescopic beams 16 and 17 are accommodated in the fixed beam 15, and the sling portions 11 and 12 are inside the first load receiving portions 120 and 121 and the second load receiving portions 128 and 129. In the case where the first and second telescopic beams 16 and 17 are in the intruded position, the first load receiving portions 120 and 121 and the second load receiving portions 128 and 129 are used instead of the first load receiving portions 120 and 121, respectively. The load receiving portions 120 and 121 and the second load receiving portions 128 and 129 are provided at intervals on the inner side in the longitudinal direction, and have the same structure as the first load receiving portions 120 and 121 and the second load receiving portions 128 and 129. The load generated during loading is supported by the fifth load receiving portions 120a and 121a and the sixth load receiving portions 128a and 129a.

As shown in FIGS. 1B and 2, an engine generator 130 is provided on the fixed beam 15, and the electric motor 35 of the driving means 13 is driven using the electric power generated by the engine generator 130. ing. The air compressor 131 provided on the fixed beam 15 is also driven by using the electric power generated by the engine generator 130, and the compressed air generated by the air compressor 131 is coupled to the air compressor 131 via a hose and an electromagnetic valve (not shown). It supplies to the air motor (not shown) which is an example of the air actuator of the ball removal hook 132 of the beveling parts 11 and 12 used as this.

Reference numerals 133 to 135 in FIG. 1 denote fixing plate hooks provided at the lower ends of the first connecting members 19, 21, and 23 of the fixed beam 15 at intervals in the longitudinal direction, and reference numerals 136 and 137 denote bottom rubbers. Reference numeral 138 denotes a control panel, and reference numerals 139 and 140 denote bare guides for cables and hoses. Reference numeral 141 in FIG. 2 represents a hanging pin for seven hooks.

Next, a method of using and an action (or operation) of the hanging device 10 according to the embodiment of the present invention will be described mainly with reference to FIG.
A state in which a crane's suspension hook can be suspended via hook suspension pins 14 and 14a on a fixed beam 15 of a suspension device 10 that is placed on a deposit rack (not shown) via temporary placement legs 136 and 137. And The first and second telescopic beams 16 and 17 are in a shortened position (ie, stored state), and the suspension span is V.
The engine generator 130 is driven, and the electric motor 35 of the driving means 13 is driven and the air compressor 131 is automatically operated using the generated electric power. In addition, operations such as operation and stop of the engine generator 130, expansion and contraction of the first and second telescopic beams 16 and 17, and hook release and return of the sling jig are performed by an operator from an arbitrary place by a radio control device.

The lifting device 10 is lifted by a crane and moved to a position above the long object to be lifted.
The electric motor 35 is driven to rotate forward, for example, to extend the first and second telescopic beams 16 and 17, and a slinging jig that is hung on the slinging portions 11 and 12 according to the length of the long object. To be located. At this time, since there is no load (empty load), the first and second telescopic beams 16 and 17 are respectively the first front guide roller 69, the first roller 86, and the second front guide roller 77. The third roller 100 (101) is supported by rolling. Accordingly, since the first and second telescopic beams 16 and 17 move only by rolling contact, the running resistance is smaller than that of the sliding type. As a result, the power load is small and the fixed beam 15 is mounted. It can be driven by the power source of the engine generator 130.

The sling jigs hung on the sling portions 11 and 12 at both ends of the first and second telescopic beams 16 and 17 are slung on both end portions of the long object. The hanging angle between the first and second telescopic beams 16 and 17 can be arbitrarily selected from 90 degrees to 45 degrees, and a long object is suspended. In a state where the first and second telescopic beams 16 and 17 are retracted, the lifting device 10 is lifted by a crane to transport a long object to the transport position. At this time, the ratchet mechanism is operated so that the first and second telescopic beams 16 and 17 are not drawn out in the expanding direction.
Further, since the load is applied, the first and second telescopic beams 16 and 17 are respectively the first front guide roller 69 and the first roller 86, the second front guide roller 77 and the third roller. Instead of 100 and 101, the first and second load receivers 120 and 121, the third load receivers 95 and 95a, the second load receivers 128 and 129, and the fourth load receivers 116 and 116a are supported. Yes.

At the transfer place, the long object is once landed, and the first and second telescopic beams 16 and 17 are extended, so that the tip of the slinging jig attached to the slinging parts 11 and 12 is positioned at both ends of the long object. Remove the ball automatically from the section. At that time, by releasing the load, the first and second telescopic beams 16 and 17 are again returned to the first front guide roller 69 and the first roller 86, the second front guide roller 77 and the third roller, respectively. It is supported by 100 and 101 and can be moved by a roller.
In the lifting device 10, as shown in FIG. 3, the suspension span is V to (V + 2L), and the range of the suspension span, that is, the stroke can be increased as compared with the length P of the fixed beam 15. it can.

The present invention is not limited to the above-described embodiments, and can be changed without departing from the gist of the present invention. For example, some or all of the above-described embodiments and modifications are included. A combination of the suspension device of the present invention is also included in the scope of the present invention.
In the present embodiment, the fixed beam includes first and second main beam members that are paired at an interval, and the first telescopic beam is outside in the width direction of the first and second main beam materials. The first and second outer beam members that are paired with each other and the second telescopic beam are disposed on the inner side in the width direction of the first and second main beam materials. If the main parts of the first and second telescopic beams are accommodated within the length of the fixed beam when the first and second telescopic beams are in the shortened position, the fixed beam and the first and second telescopic beams are other The arrangement of

The electric motor and air compressor of the driving means are driven using the electric power generated by the engine generator. However, the present invention is not limited to this, and the engine generator is not installed if necessary, and the electric motor and air are connected by a power cable. Power can be supplied to a compressor or the like.

Although the 1st, 2nd main beam material of the fixed beam 15 was comprised with the H-shaped steel materials 28 and 29, it is not limited to this, It can also comprise with another shape steel material or a steel plate etc. as needed.
Although the 1st, 2nd outer beam material of the 1st telescopic beam 16 was comprised with the I-shaped steel materials 30 and 31, it is not limited to this, It comprises with other shape steel materials or a steel plate etc. as needed. You can also.
Although the 2nd expansion-contraction beam 17 was comprised mainly with the H-shaped steel materials 32 and 33, it is not limited to this, It can also comprise with other shape steel materials or a steel plate etc. as needed.

(A) and (B) are the arrangement | positioning figure and the arrangement | positioning which looked at the front, respectively, of the hanging device which concerns on one embodiment of this invention. It is a side view of the hanging device. It is explanatory drawing which shows the main structures of the said lifting device. It is arrow AA sectional drawing of FIG. 1 (B). It is arrow BB sectional drawing of FIG. 1 (B). (A), (B) is the top view and front view explaining the joint part of an endless chain, respectively. (A), (B) is the top view and front view of a 1st front side guide mechanism which respectively mounted | worn with the 1st front side guide roller. (A), (B) is the top view and front view of a 2nd front side guide mechanism which respectively mounted | worn with the 2nd front side guide roller. (A), (B) is the front view and side view of a 1st roller mechanism which respectively mounted | wore with the 1st roller. (A) and (B) are a side view and a front view of a third roller mechanism equipped with a third roller, respectively.

DESCRIPTION OF SYMBOLS 10: Hanging device, 11, 12: Crest part, 13: Driving means, 14, 14a: Hook hanging pin, 15: Fixed beam, 16: 1st telescopic beam, 16a: 2nd connection member, 17: Second telescopic beam, 18-24: first connecting member, 25, 26: frame member, 27, 27a: mounting base, 28: H-shaped steel material (first main beam member), 28a: lower flange, 28b: upper flange, 29: H-shaped steel material (second main beam material), 29a: lower flange, 29b: upper flange, 30: I-shaped steel material (first outer beam material), 30a: lower flange, 30b: Upper flange, 31: I-shaped steel (second outer beam material), 31a: Lower flange, 31b: Upper flange, 32: I-shaped steel, 32a: Lower flange, 33: I-shaped steel, 33a: Lower flange, 34: connecting plate, 35: Dynamic motor, 36: output shaft, 37: sprocket wheel, 38, 39: web, 40, 41: bearing, 42: drive shaft, 42a: ratchet wheel, 42b: claw, 43: sprocket wheel, 44: endless chain, 45 , 46: first sprocket wheel, 47, 48: first sprocket wheel, 49, 50: bearing, 51: driven shaft, 52: driven shaft, 53, 54: second sprocket wheel, 55, 56: first 2 sprocket wheel, 57-60: endless chain, 61, 62: web, 63: bolt, 64: connecting bracket, 64a, 64b: length adjusting bolt, 65, 66: web, 67: connecting bracket, 68: dish Spring (biasing member), 69: first front guide roller, 69a: first front guide mechanism, 70: mounting bracket, 70a: mounting plate 70b, 70c: bolt, 71: fixed shaft, 72: rotating arm, 73: fixed shaft, 74: bearing, 75: compression bolt, 76: disc spring (biasing member), 77: second front guide Roller, 77a: second front guide mechanism, 78: mounting bracket, 78a: mounting plate, 78b, 78c: bolt, 79: fixed shaft, 80: rotating arm, 81: fixed shaft, 82: bearing, 83: Compression bolt, 84: outer flange, 85: coil spring (biasing member), 86: first roller, 86a: first roller mechanism, 87: mounting bracket, 88: fixed shaft, 89: rotating arm, 90: fixed shaft, 91: bearing, 92: compression bolt, 93: set bolt, 94: lower surface, 95, 95a: third load receiving portion, 96, 97: inner flange portion, 98, 99: coil spring (with) Group Material), 100: third roller, 100a: third roller mechanism, 101: third roller, 102: mounting bracket, 103, 104: fixed shaft, 105, 106: rotating arm, 107, 108: fixed Shaft, 109, 110: Bearing, 111, 112: Compression bolt, 113, 114: Set bolt, 115: Lower surface, 116, 116a: Fourth load receiving portion, 117, 118: Guide member, 119: Outer flange portion 119a: inner flange portion, 120: first load receiving portion, 120a: fifth load receiving portion, 121: first load receiving portion, 121a: fifth load receiving portion, 122, 123: guide member, 124, 125: guide material, 126, 127: seat, 128: second load receiving portion, 128a: sixth load receiving portion, 129: second load receiving portion, 129a Sixth load receiving portion, 130: engine generator, 131: air compressor, 132: ball removal hook, 133-135: fixed plate hook, 136, 137: temporary placing leg, 138: control panel, 139, 140: Bare guide, 141: 7 hanging hooks, 142: second roller, 143: fourth roller

Claims (4)

It is used suspended from a lifting machine, and has a pair of sling parts that can be hung on both sides of a long object, and the span of the sling part corresponding to the length depends on the length of the long object A changeable hanging device,
A fixed beam that can be suspended by the lifting machine, first and second telescopic beams that move back and forth synchronously with respect to a central portion of the fixed beam, and a first beam that is attached to the fixed beam. Drive means for advancing and retreating the second telescopic beam in synchronization, and a pair of sling portions provided at the distal end portions of the first and second telescopic beams,
When shortening the first and second telescopic beams, the main parts of the first and second telescopic beams are accommodated within the length of the fixed beam,
First and second sprocket wheels are provided on both sides in the longitudinal direction of the fixed beam, endless chains are spanned over the first and second sprocket wheels, and the base sides of the first and second telescopic beams are the endless Coupled to the opposite position of the chain, the first and second telescopic beams are moved forward and backward in synchronization with the movement of the endless chain;
The drive shaft provided with the first sprocket wheel has a ratchet wheel fixed to the drive shaft, a pawl that can be hooked on the ratchet wheel, and an air cylinder that operates the pawl. And a one-way clutch mechanism that prevents the first and second telescopic beams from moving outward due to the hanging angle and weight of the elongated object suspended through the sling. And
In addition, first and second front guide rollers for supporting the first and second telescopic beams from below through biasing members are provided on the inner lower portions on both sides in the longitudinal direction of the fixed beam. The first and second telescopic beams are respectively provided with first to fourth rollers that roll in contact with the fixed beam at the upper and lower portions on the base side thereof, and the first and second telescopic beams. The first and third rollers attached to the base upper part of the beam abut against the fixed beam via a biasing member,
Further, first and second load receiving portions are provided at the inner lower portions on both sides in the longitudinal direction of the fixed beam, and third and fourth load receiving portions are provided at the base upper portions of the first and second telescopic beams. Loads that are respectively provided and the first and second front guide rollers and the urging members of the first and third rollers bend at a large load, and are generated in the first and second telescopic beams. Is supported directly by the first to fourth load receiving portions. 2. The suspension device according to claim 1, wherein the fixed beam includes first and second main beam members arranged at intervals and connected by a plurality of first connecting members, and the first beam member. The telescopic beam has first and second outer beam members arranged on the outer sides in the width direction of the first and second main beam members and connected by a plurality of second connecting members, respectively. The telescopic beam is arranged on the inner side in the width direction of the first and second main beam members. 2. The hanging device according to claim 1, wherein the first and second are further on the inner side in the longitudinal direction than the positions where the first and second load receiving portions are provided at both longitudinal positions of the fixed beam. A suspension device characterized in that fifth and sixth load receiving portions are provided for receiving a load generated when a telescopic beam is housed in the fixed beam. The suspension device according to any one of claims 1 to 3, wherein the fixed beam is provided with an engine generator, and electric power is supplied to the driving means by the engine generator and is driven by the engine generator. Compressed air generated by the air compressor is supplied to the air actuator of the demounting hook of the pair of slinging parts via a hose and a solenoid valve so that power supply from the hoisting machine is unnecessary, and it is optional by a radio control device It is possible to operate from the place of the hanging device.

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