JP2007031124A - Lifter device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lifter device excellent in working easiness capable of facilitating positioning with an object to be lifted in the plane direction. <P>SOLUTION: The lifter device is equipped with jacks 2 near the four corners of an elevating/sinking frame 1 having approximately a rectangular planar shape and a hang-down device 5 installed at the elevating/sinking frame 1 and is arranged to hang down and support a work W set below the frame 1 by the hang-down device 5, wherein the hang-down device 5 is formed movable in the fore-and-aft direction and width direction of the frame 1. According to this constitution, the positioning of the work W with the hang-down device 5 in the plane direction when the work W is hung down and supported by the hang-down device 5 can be established easily and properly without moving the work W, by moving the hang-down device 5 in the fore-and-aft direction and/or width direction of the frame 1, which enhances greatly the easiness in the hang-down operation of the lifter device. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lifter device that uses a heavy object as a work object and is used for lift work of the work object.

  In recent years, cranes tend to be large, but such large cranes are legally restricted from traveling on public roads as they are.

  For this reason, when moving such a large crane vehicle between work sites, disassemble the crane vehicle, remove the boom or swivel from the crane carrier, and transfer them individually using a trailer truck or the like. At the transfer destination, these are assembled into a large crane vehicle to perform the required crane work.

  By the way, in such a large crane vehicle, since the boom or swivel provided for it is large and heavy, these disassembly and assembly operations are not easy, and for the purpose of easily performing such operations, For example, a lifter device as shown in Patent Document 1 has been proposed.

  The lifter device disclosed in Patent Document 1 is provided with telescopic cylinders attached to both ends of a beam member having a predetermined length in a direction orthogonal to the beam members, and telescopic support legs extending downward from the distal end of the telescopic cylinder. The beam member is supported by the support legs so as to be movable up and down.

  The beam member is provided with a hoisting device. This hoisting device is adapted to transmit the expansion / contraction displacement of the cylinder arranged substantially parallel to the beam member as the lifting / displacement displacement of the load engaging device attached to the tip of the wire rope via the wire rope, The beam members are disposed at two positions that are appropriately separated in the longitudinal direction of the beam member, that is, the front-rear direction of the lifter device. And the raising / lowering position of the load engaging device in these pair of front and rear winding devices is configured to be movable in the direction orthogonal to the axis of the beam member, that is, in the width direction of the lifter device.

JP-A-7-267574.

  By the way, when the lifter device is used for disassembling and assembling a large crane vehicle, the boom or swivel that is the object of the disassembling and assembling is also a large and heavy object. A direction that matches the removal direction or the mounting direction as much as possible without laterally pulling the boom or swivel, even during the disassembly work to remove from the carrier and the assembly work to attach them to the crane carrier in place. It is required to be hung from.

  However, for example, when disassembling a large crane vehicle, the large crane vehicle is allowed to enter the lower side of the installed lifter device, stop at a predetermined position, and then the outrigger is overhanged to fix it. After that, the boom is removed. In this case, if there is a predetermined deviation in the horizontal direction between the hanging position on the boom side and the load engaging device of the lifter device, the crane carrier is in a “lateral pulling state”. It becomes difficult to remove the boom from the above. As a method of avoiding such a “lateral pulling state”, it is conceivable to move the large crane vehicle, but the work is very complicated and not practical.

  For this reason, in the above-mentioned known example, the positioning operation is simplified by enabling the load engaging device of the lifter device to be moved in the width direction of the lifter device.

  However, in this known example, only a load engaging device can be moved in the width direction of the lifter device, and no mechanism for moving in the front-rear direction of the lifter device is provided.

  This is because the front-rear direction of the lifter device is the traveling direction of the large crane vehicle and can be easily adjusted by readjusting the stop position of the large crane vehicle. It is thought that it is based on the judgment that it is not necessary to provide a mechanism that can move to

  However, in practice, making it possible to move the load engaging device in the longitudinal direction of the lifter device is as important as making it movable in the width direction, and only for operations on the large crane vehicle side. However, situations that are difficult to deal with often occur.

  That is, for example, the disassembly and assembly work for a large crane vehicle is not necessarily performed on a substantially horizontal road surface, but is often performed on an inclined road surface. When disassembling and assembling work on such an inclined road surface, the lifter device is first installed on the inclined surface. In this case, the upper surface of the lifter device is set substantially horizontal by adjusting the jack. Therefore, in this state, the upper surface of the lifter device and the road surface are not parallel and are inclined at a predetermined angle.

  Thereafter, the vehicle is caused to travel on the road surface, and the large crane vehicle enters the lower side of the lifter device to stop it. Thereafter, the large crane is set in a substantially horizontal posture by adjusting the extension amount of the outrigger provided therein, and in this state, the boom is suspended by the load engaging device of the lifter device and removed from the crane carrier. .

  In this case, the stopping position of the large crane vehicle is set, for example, with care so that the hanging part on the boom side is positioned directly below the load engaging device of the lifter device. However, between the suspended position of the boom at the time of stopping the large crane vehicle and the suspended position of the boom at the time of changing the posture of the large crane vehicle substantially horizontally by adjusting the extension amount of the outrigger, Cause a positional shift in the horizontal direction. If this amount of displacement is large, the outrigger is temporarily stored and the large crane truck is moved slightly in the direction of travel, and then the outrigger is extended again to make the large crane truck approximately horizontal, and the boom is suspended. It is necessary to confirm the alignment state between the lower position and the load engaging device of the lifter device.

  As described above, in the above-described lifter device, although there is a high demand for providing a mechanism for finely adjusting the load engaging device in the front-rear direction, no consideration has been given to the conventional lifter device.

  Accordingly, the present invention has been made mainly to provide a lifter device that is easy to align with a lift object in a horizontal plane and has excellent workability.

  In the present invention, the following configuration is adopted as a specific means for solving such a problem.

  In the first invention of the present application, the jacks 2 are provided in the vicinity of the four corners of the lifting frame 1 having a substantially rectangular planar shape, and the lifting frame 1 is provided with the suspension device 5. In the lifter device configured to suspend and support the arranged work W by the suspending device 5, the suspending device 5 can be moved in both the front-rear direction and the width direction of the lifting frame 1. It is characterized by the construction.

  In the second invention of the present application, the suspension device 5 is disposed at two positions separated from each other in the front-rear direction of the lifting frame 1, and the pair of suspension devices 5 are disposed in the front-rear direction and width of the lifting frame 1. It is characterized in that it can be moved individually in the direction.

  According to a third invention of the present application, in the lifter device according to the first invention, the suspension device 5 is disposed at two positions separated from each other in the front-rear direction of the lifting frame 1 and the pair of suspension devices 5. Is configured to move integrally in the front-rear direction of the lifting frame 1.

  According to a fourth invention of the present application, in the lifter device according to the first invention, the suspension device 5 is attached to the lifting frame 1 in a substantially vertical direction, and the hydraulic cylinder A suspension beam 54 connected to the upper end side of the hydraulic cylinder 53 and moved up and down by the expansion and contraction of the hydraulic cylinder 53, and a hanging tool 56 attached to the suspension beam 54 are provided.

  In the present invention, the following effects can be obtained.

  (A) According to the lifter device according to the first invention of the present application, the jack 2 is provided in the vicinity of the four corners of the lifting frame 1 having a substantially rectangular planar shape, and the hanging device 5 is provided on the lifting frame 1. In the lifter device configured to suspend and support the workpiece W arranged below the lifting frame 1 by the suspension device 5, the suspension device 5 is arranged in the front-rear direction and the width of the lifting frame 1. Since the workpiece W is suspended and supported by the suspension device 5, the suspension device 5 is moved up and down. By moving the frame 1 in the front-rear direction and / or the width direction, the frame can be easily and accurately moved without moving the workpiece W side. Workability of the work is remarkably improved.

  (B) According to the lifter device according to the second invention of the present application, in addition to the effect described in the above (a), the following specific effect can be obtained. That is, according to the present invention, the suspension device 5 is disposed at two positions separated from each other in the front-rear direction of the lifting frame 1, and the pair of suspension devices 5 are disposed in the front-rear direction and the width direction of the lifting frame 1. Since each of the suspension devices 5 is configured so as to be individually movable, when the workpiece W is suspended and supported by the suspension devices 5, both of them are aligned in the plane direction. This can be performed individually in both the front-rear direction and the width direction, so that it is easy to handle various workpieces W, and the versatility of the lifter device is improved.

  (C) According to the lifter device according to the third invention of the present application, in addition to the effect described in (a) above, the following specific effect is obtained. That is, according to the present invention, the suspension device 5 is disposed at two positions separated from each other in the front-rear direction of the lifting frame 1 and the pair of suspension devices 5 are integrally formed in the front-rear direction of the lifting frame 1. Since it is configured to move, for example, by setting the distance between the pair of suspension devices 5 windings to the size between two suspension positions before and after the workpiece W to be suspended, the workpiece W Among the alignment in the planar direction of the both when the suspension device 5 is suspended and supported by each of the suspension devices 5, the alignment in the front-rear direction can be easily performed by a single operation, and the operability and work are accordingly increased. Will be improved.

  (D) According to the lifter device of the fourth invention of the present application, in addition to the effect described in the above (a), the following specific effect can be obtained. That is, according to the present invention, the suspension device 5 is connected to the hydraulic cylinder 53 attached to the lifting frame 1 in a substantially vertical direction, and connected to the upper end side of the hydraulic cylinder 53 to expand and contract the hydraulic cylinder 53. Since the suspension beam 54 that is moved up and down by movement and the suspension tool 56 attached to the suspension beam 54 are provided, for example, a wire rope like a hoisting device in a lifter device disclosed in Patent Document 1 is used. Compared to the configuration using the change in length, simplification of the structure and cost reduction are promoted, and the suspended height of the work object is stabilized, thereby realizing a highly reliable lift operation.

  Hereinafter, the present invention will be specifically described based on preferred embodiments.

I: First Embodiment FIGS. 1 to 3 show a lifter device Z according to a first embodiment of the present invention. This lifter device Z is used, for example, when disassembling and transporting a large crane vehicle, and includes a lifting frame 1, a jack 2, a grounding leg 4 and a suspension device 5 described below. The

  The elevating frame 1 includes a pair of first girder members 11 and 11 arranged in parallel at a predetermined interval, and a pair of second girder members arranged in parallel at predetermined intervals on both ends of each first girder member 11 and 11. It has materials 12, 12, and 12, 12, and has a long rectangular planar shape as a whole. As will be described later, it is assumed that the lifter device Z can be transported using a normal track. For this reason, the dimension in the minor axis direction (that is, the width dimension) of the lifting frame 1 is the same as that for the track. Loading is set within the allowable dimensions.

  A jack 2 and a grounding leg 4 which will be described later are arranged in the vicinity of the four corners of the lifting frame 1, and a suspension device 5 which will be described later is arranged at both ends in the long axis direction.

"Jack 2 configuration"
The jack 2 moves the lifting frame 1 up and down. The work object suspended by the suspension device 5 through the lifting and lowering of the lifting frame 1, that is, in this embodiment, the crane vehicle X The boom B and the swivel base S are lifted and hung.

  The jack 2 has a two-stage expansion / contraction structure with a built-in expansion / contraction hydraulic cylinder, and a base cylinder 21 connected to the lifting frame 1 side via a swing arm 3 described later, and a base cylinder 21 inserted therein. An intermediate cylinder 22 and a tip cylinder 23 inserted in the intermediate cylinder 22 and provided with a grounding plate 26 (see FIGS. 4 and 7) at the tip thereof.

  Here, the connection structure with respect to the said raising / lowering frame 1 of the said jack 2 is demonstrated.

  As described above, the jack 2 is connected to the lifting frame 1 via the swing arm 3, and in the connected state via the swing arm 3, the jack 2 itself is positioned. In addition to being able to change, the arrangement position in the plane direction with respect to the lifting frame 1 can be changed. By the cooperation of the posture changing function and the position changing function, the lifted device Z can be made compact and the lift can be made compact. Ensuring work ability at the time of work is aimed at.

  As shown in FIG. 4 and FIG. 7, the change in the posture of the jack 2 includes a “falling posture” that is lying down along the lifting frame 1 on the upper surface side of the lifting frame 1, and a chain line in FIGS. 2 and 3. As shown in the figure, it is a change between two postures of “standing posture” standing in a substantially vertical direction.

  Further, the position change of the jack 2 is a change between two positions of “storage position” and “ejecting position”. That is, the “storage position” is a state in which the jack 2 set in the “falling posture” is positioned within the width dimension of the lifting frame 1 as shown by solid lines in FIGS. 1 and 3. . In addition, the “jumping position” is a state in which the jack 2 set in the “standing position” has jumped in the short axis direction of the lifting frame 1, as shown by a chain line in FIGS. 1 to 3. . As will be described later, in a state where all the jacks 2 are set at the “jumping position”, a crane truck and a trailer truck are placed between a pair of jacks 2 and 2 facing in the short axis direction of the lifting frame 1. Space to allow entry is secured.

  Hereinafter, the connection structure of the jack 2 to the lifting frame 1 will be described in detail.

  As shown in FIGS. 4, 7, and 8, the swing arm 3 is configured by a beam body having a predetermined length, and one end 3 a thereof is directed in a substantially vertical direction in the vicinity of the corner of the elevating frame 1. The other end 3b is spaced apart in the vertical direction and is paired with a pair of pin holes 35, 36 ( A bracket 31 having a structure (see FIG. 7) is attached. The swing arm 3 is rotated by a swing cylinder 34 arranged between the lift frame 1 and the lift frame 1.

  A base end portion 21a (see FIG. 7) of the base tube 21 of the jack 2 is provided with a pair of pin holes 27 and 28 so as to correspond to the pair of pin holes 35 and 36 on the swing arm 3 side. A bracket 24 is provided. The jack 2 overlaps the pin hole 27 of the bracket 24 and the pin hole 35 on the swing arm 3 side, and inserts the connecting pin 32 therein, so that the jack 2 is substantially vertically centered. It can be rotated in the plane. The jack 2 is rotated around the connecting pin 32 by a raising / lowering cylinder 25 disposed between the jack 2 and the swing arm 3.

  When the raising / lowering cylinder 25 is fully contracted, the jack 2 is substantially connected to the upper surface of the elevating frame 1 while being connected to the swing arm 3 side by the connecting pin 32 as shown in FIG. It is laid down so that it may become parallel. The posture at this time is the above-mentioned “falling posture”. Then, the jack 2 set in the “falling posture” is gradually raised around the connecting pin 32 as the raising cylinder 25 extends, and as shown by a chain line in FIG. When the raising / lowering cylinder 25 is fully extended, the cylinder 25 is raised substantially vertically. The posture at this time is the “standing posture”. Here, the jack 2 is fixed in the “standing posture” by fitting the connecting pin 33 into the pin hole 36 on the bracket 31 side and the pin hole 28 on the bracket 24 side.

  Therefore, with the raising / lowering cylinder 25 fully extended and the jack 2 set to the “standing position”, the swinging cylinder 34 is fully contracted to set the jack 2 to the “retracted position”. After that, the raising cylinder 25 is fully contracted and the jack 2 is set to the “falling posture”, so that the jack 2 is set to the “falling posture” at the “retracted position”, and the transfer by the truck is performed. Possible forms.

  On the other hand, when the raising / lowering cylinder 25 is fully extended and the jack 2 is set to the “standing position”, the swinging cylinder 34 is fully extended, so that the jack 2 is in the “ejecting position”. The posture is set to “standing posture”, and the lift work can be performed.

“Configuration of grounding leg 4”
When the lifter device Z is transported by truck, the grounding leg 4 supports the lifter device Z on a truck bed so that the lifter device Z can be held by itself without using a crane device. In particular, the lifting / lowering function of the jack 2 enables loading / unloading to / from a truck, and also enables stable support of the lifter device Z during transfer. In this embodiment, As shown in FIG. 1, the front and rear ends of the lift frame 1 are provided at positions closer to the inside than the pair of jacks 2, 2 facing the width direction of the lift frame 1.

  As shown in FIGS. 7 and 8, the grounding leg 4 is composed of a cylindrical body having a predetermined length, and can be slidably displaced in a guide cylinder 41 fixed to the lifting frame 1 side. A ground plate 42 is provided at the lower end of the ground plate. In this case, the guide cylinder 41 is attached in an inclined state so as to be gradually displaced outward in the width direction of the elevating frame 1 as it goes downward. Therefore, the grounding leg 4 moves the grounding position of the grounding plate 42 outward in the width direction of the lifting frame 1 as the amount of downward projection from the lifting frame 1 increases, as shown in FIG. Thus, when the pair of grounding legs 4, 4 facing the width direction of the lifting frame 1 are grounded, the pair of grounding legs 4, 4 are installed in an “eight” shape with the lower end side enlarged and stable. A grounding state is secured.

  The grounding leg 4 is adapted to manually adjust the downward protrusion amount, and the position fixing after the adjustment of the protrusion amount is provided in the guide cylinder 41 as shown in FIG. This is done by inserting the pin 43 into a selected one of the pin hole 45 and the plurality of pin holes 44 provided on the grounding leg 4 side.

"Configuration of the suspension device 5"
The suspension device 5 suspends and supports a work object (in this embodiment, a boom and a swivel of a crane truck). In the lifter device Z of this embodiment, since the lifting work of the work object is basically performed by the expansion and contraction operation of the jack 2, the suspension device 5 is originally provided with a suspension position in the planar direction. However, in practice, it is difficult to position the work object at an appropriate position with respect to the lifter device Z. Therefore, the present invention is applied to the suspension device 5. The installation position with respect to the lifting frame 1 can be adjusted both in the front-rear direction and in the width direction (hereinafter simply referred to as “front-rear direction” and “width direction”). This will be specifically described below.

  As shown in FIG. 1, the suspension device 5 is attached between the pair of second girder members 12, 12 disposed at both ends in the major axis direction of the lifting frame 1. Specifically, as shown in an enlarged view in FIGS. 4 to 6, the suspension device 5 extends between the pair of second girders 12 and 12 in the front-rear direction of the lifting frame 1 and is predetermined. And a pair of first guide members 13 and 13 provided with an opposing interval and a direction orthogonal to the pair of first guide members 13 and 13, that is, in the width direction and with a predetermined opposing interval. A pair of second guide members 14, 14 connected to the pair of first guide members 13, 13 so as to be movable in the extending direction, that is, the front-rear direction, and the pair of second guide members 14, 14. And a slide body 52 that is arranged so as to be slidable in the extending direction, that is, in the width direction along the second guide members 14 and 14, and stands on both ends in the slide direction of the slide body 52. A pair of hydraulic cylinders 53 provided, and Configured with a hanging beam 54 suspender 56 are connected respectively to the outer position of the both ends with its opposite end portions by the hydraulic cylinder 53 of the pair is supported.

  The slide body 52 is moved in the width direction integrally with the suspension beam 54 by a pair of first slide cylinders 55 and 55 attached in opposite directions to each other (in FIG. (See the portion indicated by the chain line in FIGS. 54-1 and 54-2). Further, the pair of second guide members 14 and 14 are integrated with the slide body 52 and the suspension beam 54 in the front-rear direction by a pair of second slide cylinders 57 and 57 that face each other in the front-rear direction. (Refer to the portion shown by the chain line in FIG. 5 with reference numerals 14-1 and 14-2).

  As described above, in the suspension device 5 of this embodiment, the suspension beam 54 (that is, the suspension tool provided at both ends of the suspension beam 54 by the synchronous operation of the pair of first slide cylinders 55, 55). 56) in the width direction is adjusted, and the suspension beam 54 (that is, the suspension 56 provided at both ends of the suspension beam 54) by the synchronous operation of the pair of second slide cylinders 57, 57 is adjusted. The position in the front-rear direction is adjusted.

  In the suspension device 5, the position adjustment in the front-rear direction and the position adjustment in the width direction are performed independently. In addition, each position adjustment is performed independently between the pair of front and rear suspension devices 5 and 5.

  As will be described later, the push-up cylinder 53 applies, for example, a required tension to the boom when the boom is disassembled, and enables the disassembly work line, and after disassembly, the boom is suspended. In addition to this, it can also be used as vertical position adjusting means for the above-mentioned hanging tool 56. Further, the push-up cylinder 53 is a position adjusting operation in the width direction of the hanger 56 by the first slide cylinder 55 or a position adjusting operation in the front-rear direction of the hanger 56 by the second slide cylinder 57. Are operated independently.

  Moreover, in each figure, the code | symbol F has shown the loading platform surface of the truck or the trailer truck, and the code | symbol G has shown the ground G.

II: Second Embodiment FIG. 9 shows a lifter device Z according to a second embodiment of the present invention. This lifter device Z has the same basic configuration as that of the lifter device Z according to the first embodiment, and the difference is the drive mechanism for the pair of suspension devices 5 and 5. Therefore, in the following, a specific structure will be described focusing on this difference, and other common components will be denoted by the same reference numerals as those in FIGS. 1 to 8 according to the first embodiment. The corresponding description in the first embodiment will be cited with reference to FIG. 9 according to the second embodiment.

  In the lifter device Z of this embodiment, the position adjustment in the front-rear direction of the pair of suspending devices 5 and 5 is performed in an integrated manner. Specifically, among the pair of second guide members 14, 14 in the pair of suspension devices 5, 5, the second guide members 14, 14 positioned inside are connected by the connecting rod 58, while the outer side A second slide cylinder 57 is attached to each of the second guide members 14 and 14 located at the positions. Therefore, the distance between the pair of suspension devices 5 and 5 is fixed to a fixed dimension.

  In this case, the pair of second slide cylinders 57, 57 includes an extension side oil chamber of one cylinder 57 and a contraction side oil chamber of the other cylinder 57, and an extension side oil chamber of the other cylinder 57 and one of the extension cylinders. By connecting the compression side oil chambers of the cylinders 57 with oil passages, respectively, the extension operation of one cylinder 57 and the reduction operation of the other cylinder 57, the extension operation of the other cylinder 57, and the reduction of the one cylinder 57 are performed. The operations are performed in synchronization with each other. Accordingly, the pair of suspension devices 5 and 5 move integrally in the front-rear direction.

  Needless to say, the movement of the pair of suspension devices 5, 5 in the width direction can be performed independently for each of the suspension devices 5, 5.

III: Usage Example of Lifter Device Z Next, with reference to FIGS. 10 to 27, a work procedure in the case of disassembling and transporting a large crane vehicle X using the lifter device Z according to the above embodiment will be described. explain.

  Here, the lifter device Z is transported to the work site by a truck, and the lifter device Z is lowered from the truck and installed at the work site, and the boom and swivel of the crane truck are installed using the installed lifter device Z. Each of the booms and the swivel base is individually placed on a trailer track, and the lifter device Z is placed on the trailer track on which the boom is placed, together with the boom. A case where the boom, the swivel base and the lifter device Z are transferred will be described as an example.

  FIG. 10 shows a state where the lifter device Z is placed on the truck T1 and transferred to the work site. In this transfer state, the lifter device Z sets each jack 2 in the “falling posture” and positions it in the “storage position”. Then, the grounding legs 4 are protruded downward to a predetermined length, and the lifter device Z is placed on the loading platform of the track T1 by the grounding legs 4.

  In this form at the time of transfer, since the jack 2 of the lifter device Z is set to the “falling posture” and is placed on the track by the grounding leg 4, for example, the jack 2 is placed in the “standing posture”. The overall height from the ground is kept low compared to the case where the vehicle is placed on the track by the jack 2. Therefore, for example, the lifter device Z can be transported using a normal truck with a relatively high floor but a low fare without using a low-floor trailer truck, and the degree of freedom of transport is improved. At the same time, the transfer cost can be reduced.

  Next, the lifter device Z is lowered from the track T1 and installed on the ground. In this case, first, as shown in FIGS. The position of each jack 2 is changed from the “falling position” to the “standing position” and fixed. Further, as shown in FIGS. 12 (a) and 12 (b), the respective jacks 2 which are set in the “standing position” are caused to jump out from the “storage position” to the side by the swing cylinder 34. Set to “Jump position”. In this state, each of the jacks 2 is in a position that protrudes further outward than the full width position of the track T1.

  Next, as shown in FIGS. 13 (a) and 13 (b), the jacks 2 are extended from the fully contracted state so that the ground plate 26 contacts the ground, and the lifter device Z is lifted from the loading platform of the truck T1. In addition, the jack 2 is fully extended to raise the lifting frame 1 side to the highest position. Each of the grounding legs 4 is pulled up and stored. Further, the truck T1 is retracted from the lower position by the lifter device Z. Thus, the installation work of the lifter device Z is completed.

  Next, the operation moves to disassembling the crane vehicle X and placing it on the trailer truck.

  In the crane vehicle X, a swivel base S is mounted on a crane carrier C, and a boom B is connected to the swivel base S. The boom B and the swivel base S are removed from the crane carrier C. These are transported by a trailer truck separate from the crane carrier C.

  As shown in FIG. 14, after the truck T <b> 1 is retracted, the crane vehicle X is moved under the lifter device Z and stopped at a predetermined position. In this case, in order to first remove the boom B from the crane carrier C side, the position of the center of gravity of the boom B is positioned substantially at the center of the suspension devices 5 and 5 before and after the lifter device Z. Stop.

  Thereafter, the jacks 2 are appropriately reduced to lower the lifting frame 1 portion, and the hanging tools 56 provided on the hanging devices 5 are connected to the hanging positions of the booms B. At this time, the first slide cylinder 55 and the first slide cylinder 55 are respectively provided on the suspension devices 5 and 5 side so that the suspension device 56 corresponds as much as possible to a position directly above the predetermined suspension position on the boom B side. The second slide cylinder 57 is operated, and the suspension devices 5 and 5 are appropriately moved in the front-rear direction and the width direction of the lift frame 1 to adjust the position.

  After the suspension 56 is connected to the suspension position of the boom B, the hydraulic cylinder 53 or the jack 2 is slightly extended to apply a predetermined tension to the suspension 56. In this state, the boom B Detachment work from crane vehicle X is performed.

In this case, as described above, the suspension device 56 of each suspension device 5, 5 can be placed directly above the predetermined suspension position on the boom B side by adjusting the position on each suspension device 5, 5 side. Since it corresponds as much as possible, the boom B is not laterally pulled by the lifting tool 56, and the boom B can be easily and accurately separated from the crane vehicle X. Rapidity is ensured.

When the separation work is completed, as shown in FIG. 15, the jacks 2 are extended to raise the boom B together with the lifting frame 1 and hold it, and the boom B is removed as shown in FIG. The crane car X in the state of being lifted is retracted from the lower side of the lifter device Z.
Next, as shown in FIGS. 17 (a) and 17 (b), instead of the crane vehicle X, the first trailer truck T2 enters the lower side of the lifter device Z and stops at a predetermined position. Thereafter, as shown in FIGS. 18 (a) and 18 (b), each jack 2 is contracted to lower the boom B together with the lifting frame 1, and this is placed on the loading platform of the first trailer truck T2. Place. When the placement of the boom B on the first trailer track T2 is completed, as shown in FIG. 19, the jacks 2 are extended to raise the lifting frame 1 portion to the highest position and wait. The first trailer track T2 on which the boom B is placed is temporarily retracted from the lower side of the lifter device Z.

  Next, as shown in FIG. 20, instead of the first trailer truck T <b> 2, the crane vehicle X again enters the lower side of the lifter device Z and stops at a predetermined position.

  Thereafter, the jacks 2 are appropriately reduced to lower the lifting frame 1 portion, and the suspension tools 56 provided on the suspension devices 5 are connected to the suspension position of the swivel base. At this time, the first slide cylinder 55 is provided on each of the suspension devices 5 and 5 so that the suspension 56 corresponds as much as possible directly above a predetermined suspension position on the swivel base S side. Then, the second slide cylinder 57 is operated to move the suspension devices 5 and 5 appropriately in the front-rear direction and the width direction of the lift frame 1 to adjust the position.

  After the suspension 56 is connected to the suspension position of the swivel base S, the hydraulic cylinder 53 or the jack 2 is slightly extended to apply a predetermined tension to the suspension 56. In this state, the swivel base S Is detached from the crane carrier C.

  In this case, as described above, the suspension device 56 of each suspension device 5, 5 is positioned immediately above a predetermined suspension position on the swivel base S side by adjusting the position on each suspension device 5, 5 side. Since it corresponds as much as possible, the swivel base S is not laterally pulled by the lifting tool 56, and the swivel base S can be easily and accurately separated from the crane vehicle X. Safety and speed are ensured.

  After completion of the separation work of the swivel base S, the jacks 2 are extended to hold the swivel base S in an integrated manner with the lifting frame 1 and to hold the crane carrier C of the lifter device Z. Retract from the bottom.

  Next, as shown in FIG. 21, after the second trailer track T3 has entered the lower side of the swivel base S suspended by the lifter device Z, the jacks 2 are contracted to turn the swivel. The platform S is lowered and placed on the second trailer track T3. Thereafter, as shown in FIG. 22, each jack 2 is extended to raise and hold the lifting frame 1 portion to the highest position, and the swivel base S is placed as shown in FIG. The second trailer track T3 is retracted from the lower side of the lifter device Z.

  Next, the preparation for transferring the lifter device Z is started.

  That is, instead of retracting the second trailer truck T3, as shown in FIG. 24, the first trailer truck T2 on which the boom B is placed is again entered below the lifter device Z. Stop.

  Then, the grounding legs 4 of the lifter device Z are fixed by projecting to a projecting amount that can be installed on the second trailer track T3. Thereafter, as shown in FIGS. 25 (a) and 25 (b), the jacks 2 are reduced to lower the lifting frame 1, and the grounding legs 4 are grounded on the first trailer track T2. The lifter device Z is supported by the grounding legs 4 in a state where the lifting frame 1 is positioned immediately above the boom B.

  Next, as shown in FIG. 26, each of the jacks 2 is reduced, and the position of the jack 2 is changed from the “jumping position” to the “storing position”. Further, as shown in FIG. 27, the posture of each jack 2 is changed from the “standing posture” to the “falling posture”.

  Thus, both the boom B and the lifter device Z are placed on the first trailer track T2, and both of them are transferred by the first trailer track T2.

  With the above, the disassembly and transfer work of the crane vehicle X performed using the lifter device Z is completed.

  In the above description, the case where the lifter device Z is installed on a substantially horizontal road surface and the crane vehicle X is disassembled and assembled using the lifter device Z has been described. Even when the road surface on which Z is installed is an inclined surface and the crane vehicle X is disassembled / assembled on the inclined surface, as described above, the lifting device 5 includes the suspension devices 5. Since the position of 5 can be adjusted in two directions, the front-rear direction and the width direction, work safety and speed can be ensured as in the case of work on a substantially horizontal road surface. is there.

  Further, in the above description, after the work is completed, the lifter device Z is transported by the first trailer truck T2 in a mixed state with the boom B. However, in another embodiment, for example, the lifter after the work is completed. The device Z can also be transported by the track T1 alone. In this case, the loading of the lifter device Z onto the truck T1 can be realized by reversing the work procedure (see FIGS. 10 to 13) in the installation work of the lifter device Z at the work site, The description here is omitted.

  In addition, here, as an example, the disassembly work of the crane vehicle X using the lifter device Z and the work of loading the disassembled boom B and swivel base S onto the trailer truck have been described, but the lifter device Z is used as the crane vehicle. Needless to say, the present invention is not only applicable to work using X as a work object, but can be widely applied to lift work for general heavy objects.

1 is a plan view of a lifter device according to a first embodiment of the present invention. It is an II-II arrow line view of FIG. It is the III-III arrow line view of FIG. It is an enlarged view of the IV section of FIG. It is an enlarged view of the V section of FIG. It is VI-VI arrow line view of FIG. FIG. 7 is an enlarged view of VII-VII in FIG. 2. FIG. 8 is an enlarged view of VIII-VIII in FIG. 3. It is a top view of the lifter apparatus which concerns on 2nd Embodiment of this invention. It is explanatory drawing of the transfer state of the lifter apparatus by a truck. It is 1st operation | movement procedure explanatory drawing in the case of taking down a lifter apparatus from a truck. It is 2nd operation | movement procedure explanatory drawing. It is 3rd operation | movement procedure explanatory drawing. It is 1st work procedure explanatory drawing in the case of removing a boom from a crane vehicle using a lifter apparatus, and mounting in a 1st trailer truck. It is 2nd operation | movement procedure explanatory drawing. It is 3rd operation | movement procedure explanatory drawing. It is 4th operation | movement procedure explanatory drawing. It is 5th operation | movement procedure explanatory drawing. It is 6th operation | movement procedure explanatory drawing. It is 1st operation | movement procedure explanatory drawing in the case of using a lifter apparatus and removing a swivel base from a crane vehicle, and mounting in a 2nd trailer truck. It is 2nd operation | movement procedure explanatory drawing. It is 3rd operation | movement procedure explanatory drawing. It is 4th operation | movement procedure explanatory drawing. It is 1st work procedure explanatory drawing in the case of mounting a lifter apparatus in the 1st trailer truck which mounted the boom. It is 2nd operation | movement procedure explanatory drawing. It is 3rd operation | movement procedure explanatory drawing. It is 4th operation | movement procedure explanatory drawing.

Explanation of symbols

1 .. Elevating frame 2 .. Jack 3 .. Swing arm 4 .. Grounding leg 5 .. Suspension device 11 .. First girder material 12 .. Second girder material 13 .. First guide material 14 .. Second guide material 21 ·· Base tube 22 · · Intermediate tube 23 · · End tube 24 · · Bracket 25 · · Tilting cylinder 26 · · Grounding plate 27 · · Pin hole 28 · · Pin hole 30 · · Swing Center shaft 31 .. Bracket 32 .. Connection pin 33 .. Connection pin 34 .. Oscillation cylinder 35 .. Pin hole 36 .. Pin hole 41 .. Guide tube 42 .. Ground plate 43. Slide body 53 ..Hydraulic cylinder 54 ..Hanging beam 55 ..First sliding hydraulic cylinder 56 ..Hanging tool 57 ..Second sliding hydraulic cylinder 58 ..Connecting rod 61 ..Outer cylinder 62 ..Inner cylinder 63 ・ ・ times Moving center shaft 64 ・ ・ Rotating cylinder 65 ・ ・ Rotating body 66 ・ ・ Pin hole 67 ・ ・ Pin hole B ・ ・ Boom S ・ ・ Swivel base C ・ ・ Crane carrier T1 ・ ・ Track T2 ・ ・ First trailer track T3 ··· Second trailer truck X · · Crane truck Z · · Lifter device

Claims (4)

Jacks (2) are provided in the vicinity of the four corners of the lifting frame (1) having a substantially rectangular planar shape, and a lifting device (5) is provided on the lifting frame (1). A lifter device configured to suspend and support the workpiece (W) arranged on the side by the suspending device (5),
The lifter device characterized in that the suspension device (5) is configured to be movable in two directions, the front-rear direction and the width direction of the elevating frame (1). In claim 1,
The suspension device (5) is disposed at two positions separated from each other in the front-rear direction of the lifting frame (1), and the pair of suspension devices (5) includes the front-rear direction and width of the lifting frame (1). The lifter device is configured to be individually movable in the direction. In claim 1,
The suspension device (5) is disposed at two positions separated from each other in the front-rear direction of the lifting frame (1), and the pair of suspension devices (5) are integrated in the front-rear direction of the lifting frame (1). The lifter device is configured to move in a moving manner. In claim 1,
The suspension device (5) includes a hydraulic cylinder (53) attached to the lifting frame (1) in a substantially vertical direction, and is connected to an upper end side of the hydraulic cylinder (53). 53) A lifter device comprising a suspension beam (54) that is moved up and down by the expansion and contraction motion of (53) and a suspension tool (56) attached to the suspension beam (54).

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