JP2013234507A - Heavy object lifting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heavy object lifting device which can be manufactured firmly in a short period and at low cost by comprising all of outer supports and inner supports of existing H-beams for earth-retaining.SOLUTION: In heavy object lifting device, in which an outer support 1 and an inner support 2 in the outer support 1 are provided in a mutually nested manner and which is assembled to be liftable by hydraulic jack devices 3, each of the outer support 1 and the inner support 2 is composed of four H-beams, and each hydraulic jack device 3 includes a strand 40 stretched over between upper and lower ends of the inner support 2, an extensible hydraulic jack 43 fixed to the outer support 1, first gripping means provided on a movable side of the hydraulic jack 43, and second gripping means provided on a fixed side of the hydraulic jack 43. The inner support 2 moves up and down intermittently with respect to the outer support 1 according to expansion and contraction of the hydraulic jack 43.

Description

  The present invention relates to a heavy load lifting device, particularly a heavy load lifting device in which an outer column and an inner column in an outer column are assembled so as to be movable up and down by a hydraulic jack device. The present invention relates to a heavy lifting device that can be manufactured in a short time and at a low cost by being composed of a shape steel.

  For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2009-102972) discloses an example of a heavy lifting device used in the construction or dismantling of a large structure such as a hot blast furnace heat storage chamber of a blast furnace in an ironworks. Yes. Hereinafter, this heavy lifting device will be referred to as a conventional heavy lifting device and will be described with reference to the drawings.

  8 is a front view showing a conventional heavy lifting device, FIG. 9 is an enlarged cross-sectional view taken along line AA of FIG. 8, and FIG. 10 is a front view showing the conventional heavy lifting device with the inner struts raised.

  8 to 10, reference numeral 31 denotes an outer support column, and reference numeral 32 denotes an inner support column that is nested in the outer support column 31 and can be moved up and down with respect to the outer support column 31 by a hydraulic jack device 33. Both struts 31, 32 are truss-structured quadrangular columns, and a heavy object (W) is supported on the inner strut 32. If the outer column 31 and the inner column 32 are divided into a plurality of blocks so as to be assembled, it is possible to easily construct, dismantle and carry a conventional heavy lifting device. As shown in FIG. 9, the outer column 31 and the inner column 32 are configured such that a wheel 34 attached to the inside of the outer column 31 runs along a guide rail 35 attached to the outside of the inner column 32 in the height direction. Ascend and descend smoothly.

  Two hydraulic jack devices 33 are provided between the outer column 31 and the inner column 32. Each hydraulic jack device 33 is disclosed in Patent Document 2 (Japanese Patent No. 2882830).

  Hereinafter, an outline of the hydraulic jack device 33 will be described with reference to the drawings.

  FIG. 11 is a partially omitted sectional view showing the hydraulic jack device.

  As shown in FIG. 11, the hydraulic jack device 33 is configured by an upper wire gripping device 41 a and a lower wire gripping device 41 b that are provided along the strand 40 with a vertical interval. The upper anchor base plate 42a of the upper wire gripping device 41a is fixed to the piston 45 side of the hydraulic jack 43, and the lower anchor base plate 42b of the lower wire gripping device 41b is fixed to the cylinder 44 side of the hydraulic jack 43. A plurality of hydraulic jacks 43 are installed at symmetrical positions, and each is driven in synchronization by a hydraulic system.

  The upper pressure plate 46a and the upper release plate 47a of the upper wire gripping device 41a are connected by a plurality of connecting rods 49 penetrating the upper anchor block 48a, and move up and down integrally by an upper clamping cylinder 50a described later. Similarly, the lower pressure plate 46b and the lower release plate 47b of the lower wire gripping device 41b are connected by a plurality of connecting rods 49 penetrating the lower anchor block 48b, and are integrally moved up and down by a lower clamping cylinder 50b described later. Move.

  An upper clamping cylinder 50a is fixed to the upper anchor block 48a, and an upper release plate 47a is fixed to the piston 52a side. Thus, when the upper clamping cylinder 50a is operated, the upper pressure plate 46a and the upper release plate 47a move up and down integrally. Similarly, a lower clamping cylinder 50b is fixed to the lower anchor block 48b, and a lower release plate 47b is fixed to the piston 52b side. Thereby, if the lower clamping cylinder 50b is operated, the lower pressure plate 46b and the lower release plate 47b move up and down integrally.

  By the upper clamping cylinder 50a, the upper pressure plate 46a and the upper release plate 47a are simultaneously moved up and down to forcibly loosen the upper wire grip 51a of the upper wire gripping device 41a with respect to the through hole 53a of the upper anchor block 48a. The strand 40 can be gripped or released by fitting into the through hole 53a, that is, by opening and closing the upper wire grip 51a. Similarly, the lower clamping plate 50b simultaneously moves the lower pressure plate 46b and the lower release plate 47b up and down to force the lower wire grip 51b of the lower wire gripping device 41b into the through hole 53b of the lower anchor block 48b. On the other hand, the strand 40 can be grasped or released by loosening or fitting in the through hole 53b, that is, by opening and closing the lower wire grip 51b.

  As shown in FIGS. 8 and 9, the strand 40 is stretched across the upper and lower ends of the inner column 32, the hydraulic jack device 33 is fixed to the outer column 31, and the above opening / closing operation is performed on the upper and lower wire gripping devices 41a. , 41b are alternately performed, and the upper wire gripping device 41a holding the strand 40 is lifted and lowered by the hydraulic jack 43, the inner strut 32 can be lifted and lowered intermittently with respect to the outer strut 31.

JP 2009-102972 A Japanese Patent No. 2828430

According to the above conventional heavy lifting device, it is possible to easily construct and dismantle a large structure such as a hot blast furnace heat storage chamber of a blast furnace in an ironworks, but there are the following problems.
(1) Since both the outer column 31 and the inner column 32 are made of quadrangular columns with a truss structure, it takes a lot of time and labor to construct them.
(2) After completion of construction and dismantling, the work of moving the conventional heavy lifting device to another location requires dividing the outer column 31 and the inner column 32 into a plurality of blocks. Cost.
(3) Since most of the steel materials that make up the conventional heavy lifting device are dedicated steel materials, manufacturing takes time and cost.

  Accordingly, an object of the present invention is to provide a heavy lifting device that can be manufactured firmly in a short time and at low cost.

  The present invention has been made to achieve the above object, and is characterized by the following.

  The invention according to claim 1 is a heavy lifting device in which an outer support and an inner support in the outer support are assembled in a telescopic manner and can be moved up and down by a hydraulic jack device. Are formed of four H-shaped steels, and the outer struts are arranged symmetrically with a gap so that the inner flanges face each other, and the inner struts are connected to the inner flanges, The inner struts are arranged so that the flanges are orthogonal to each other, and the hydraulic jack device includes a strand stretched between the upper and lower ends of the inner struts, and an expandable / contractable fixed to the outer struts. A hydraulic jack; first gripping means provided on a movable side of the hydraulic jack; and second gripping means attached to a fixed side of the hydraulic jack. At the time of extension, the first gripping means grips the strand, and at the same time, the second gripping means releases the grip of the strand, and at the time of contraction of the hydraulic jack, the second gripping means At the same time, the first gripping means releases the grip of the strand, and thus the inner strut is lifted and lowered intermittently with respect to the outer strut by expansion and contraction of the hydraulic jack. It is what you have.

  The invention described in claim 2 is characterized in that, in the invention described in claim 1, the outer flanges of the outer support columns are connected by a reinforcing material.

  The invention described in claim 3 is characterized in that, in the invention described in claim 1 or 2, the inner flanges of the inner support columns are connected to each other via a reinforcing material.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the strand is stretched between upper and lower end portions of the outer support column, and the hydraulic jack is The outer column is fixed to the column, and thus the outer column is raised and lowered intermittently with respect to the expansion and contraction of the hydraulic jack.

  The invention according to claim 5 is characterized in that, in the invention according to any one of claims 1 to 4, the H-shaped steel is an existing H-shaped steel for retaining.

  According to the present invention, in the heavy lifting device in which the outer column and the inner column in the outer column are assembled in a nested manner and can be moved up and down by the hydraulic jack device, the outer column and the inner column are all H-shaped for existing mountain fixing. By comprising with steel, a heavy load raising / lowering apparatus can be manufactured firmly in a short time and at low cost.

It is a partially-omission perspective view which shows the heavy article lifting / lowering apparatus of this invention. It is an AA line expanded sectional view of FIG. It is a BB line expanded sectional view of Drawing 1. It is a perspective view which shows the H-section steel for mountain fastening. It is the AA line expanded sectional view of FIG. It is a schematic front view which shows the crane which uses the heavy article raising / lowering apparatus of this invention. It is a schematic front view which shows the lifter using the heavy article raising / lowering apparatus of this invention. It is a front view which shows the conventional heavy article raising / lowering apparatus. It is an AA line expanded sectional view of FIG. It is a front view which shows the conventional heavy load raising / lowering apparatus which the inner side support | pillar rose. It is a partially omitted sectional view showing a hydraulic jack device.

  One embodiment of the heavy lifting device of the present invention will be described with reference to the drawings.

  FIG. 1 is a partially omitted perspective view showing a heavy article lifting apparatus according to the present invention, FIG. 2 is an enlarged sectional view taken along line AA in FIG. 1, and FIG. 3 is an enlarged sectional view taken along line BB in FIG. .

  In FIG. 1 to FIG. 3, 1 is an outer column, 2 is an inner column in the outer column 1, and the outer column 1 and the inner column 2 are nested with respect to the outer column 1 by the hydraulic jack device 3. Thus, the inner support column 2 is assembled to be movable up and down. The hydraulic jack device 3 will be described later.

  Each of the outer support column 1 and the inner support column 2 is made of four existing H-shaped steels 6 for mountain fixing. The H-shaped steel 6 for mountain fastening will be described later. The H-shaped steel for mountain retaining constituting the outer support column 1 is shown by 6A, and the H-shaped steel for mountain retaining constituting the inner support column 2 is shown by 6B. The outer struts 1 are arranged symmetrically with a gap so that the inner flanges of the H-shaped steel 6A face each other. The inner strut 2 is connected to the inner flanges of the H-section steel 6B. The outer strut 1 and the inner strut 2 are composed of a flange of the H-section steel 6A of the outer strut 1 and a flange of the H-section steel 6B of the inner strut 2. It is arranged to be orthogonal.

  As shown in FIG. 2, the outer flanges of the H-shaped steel 6A of the outer column 1 are connected to each other by a reinforcing material 4 so that the H-shaped steel 6A constituting the outer column 1 is in the weak axis direction (X in FIG. 2). Direction) strength can be reinforced. As shown in FIG. 1 to FIG. 3, the inner flanges of the H-section steel 6B of the inner strut 2 are connected to each other via a reinforcing member 5, so that the H-axis steel 6B constituting the inner strut 2 has a weak axial direction ( The strength in the Y direction in FIG. 2 can be reinforced. Thus, by reinforcing the H-shaped steels 6A and 6B with the reinforcing members 4 and 5, the heavy lifting device of the present invention constituted by the outer support column 1 and the inner support column 2 becomes a strong structure.

  The existing H-shaped steel 6 for mountain retaining will be described. A mountain retaining is a construction to protect the side of excavation during construction of underground structures, buried objects, etc., and prevent the surrounding ground from collapsing and outflow of earth and sand. It is a steel material used for. As shown in FIGS. 4 and 5, the H-shaped steel 6 for mountain retaining is welded with flat plates 8 at both ends of the H-shaped steel material 7, and a plurality of bolt holes 9 are spaced from the flange of the H-shaped steel material 7 and the flat plate 8. It consists of something that is open. Since the H-shaped steel 6 for mountain retaining has high rigidity, and several types having different lengths and cross-sectional dimensions are manufactured, the different types of mountain H-shaped steel 6 are appropriately used by using the bolt holes 9. By combining them, it can be used for all mountain retaining works.

  In this way, by using the H-shaped steel 6 for retaining, it is possible to reduce the retaining cost and shorten the construction period. In addition, the H-shaped steel 6 for retaining is economical because it can be used repeatedly by dismantling after completion of construction.

  According to this invention, since the H-shaped steel 6 for retaining is used for the H-section steels 6A and 6B of the outer support column 1 and the inner support column 2, the heavy-weight lifting device can be firmly and quickly compared with the conventional heavy-weight lifting device. And it can be manufactured at low cost.

  As shown in FIGS. 1 and 2, reference numeral 10 denotes an upper guide member fixed between upper portions of the inner flanges of the H-section steel 6A. A hydraulic jack 43 (described later) is attached to the upper guide member 10. The upper guide member 10 is made of an H-shaped steel material 12 having flat plates 11 fixed at both ends. A guide hole 13 of a strand 40 to be described later is formed through the central portion of the web of the H-shaped steel material 12. The inner end portion 11A of the flat plate 11 protrudes toward the inner support column 2 side, and the outer flange of the H-section steel 6B moves up and down along the inner end portion 11A (see FIG. 2). This prevents the inner strut 2 from swinging in the direction perpendicular to the flange of the H-section steel 6A. Note that the swing of the inner support column 2 in the direction parallel to the flange of the H-shaped steel 6A is prevented by a guide wheel 14 described later.

  Reference numeral 14 denotes a guide wheel attached to the inner side of the upper guide member 10. The guide wheel 14 rotates in contact with the outer flange surface of the inner column 2 that moves up and down with respect to the outer column 1. This prevents the inner strut 2 from swinging in a direction parallel to the flange of the H-section steel 6A.

  Reference numeral 15 denotes a lower guide member fixed to the lower portion of the inner support column 2. The lower guide member 15 includes a guide wheel 16 that rolls along the web inner surface of the H-section steel 6 </ b> A, and a fixing member 17 that fixes the guide wheel 16 to the inner column 2. The guide wheel 16 rotates in contact with the web inner surface of the outer support column 1. This prevents the inner strut 2 from swinging in a direction parallel to the flange of the H-section steel 6A. Since the fixing portion of the guide wheel 16 of the fixing member 17 is inserted between the flanges of the H-section steel 6A, the inner column 2 is prevented from swinging in the direction orthogonal to the flange of the H-section steel 6A.

  The hydraulic jack device 3 is the same as the hydraulic jack device 33 shown in FIG. That is, the hydraulic jack device 3 includes a strand 40 stretched between upper and lower ends of the inner column 2, a hydraulic jack 43 fixed to the upper guide member 10 of the outer column 1, and a movable side of the hydraulic jack 43. First gripping means (upper wire gripping device 41a) provided on the (piston 45 side) and second gripping means (lower wire gripping device 41b) attached to the fixed side (cylinder 44 side) of the hydraulic jack 43, When the hydraulic jack 43 is extended, the first gripping means grips the strand 40. At the same time, the second gripping means releases the grip of the strand 40, and when the hydraulic jack 43 is contracted, the second gripping means. Grips the strand 40 and at the same time the first gripping means releases the grip of the strand 40 and thus the hydraulic jack Inner post 2 by expansion and contraction of 3 intermittently lifting relative to the outer post 1.

  According to the above-described heavy load lifting device of the present invention, the heavy load supported on the upper portion of the inner column 2 can be lifted and lowered freely by the expansion and contraction operation of the hydraulic jack 43.

  Next, a crane using the heavy article lifting apparatus of the present invention will be described with reference to the drawings.

  FIG. 6 is a front view showing a crane using the heavy lifting device of the present invention.

  This crane is composed of four heavy lifting devices according to the present invention that face each other (FIG. 6 is a front view, so only two are shown).

  In FIG. 6, the same reference numerals as those in FIGS. 1 to 3 denote the same components. That is, 1 is an outer support column, 2 is an inner support column, 3 is a hydraulic pressure composed of a strand 40 a stretched between upper and lower ends of the inner support column 2, and a hydraulic jack 43 fixed to the outer support column 1. It is a jack device.

  The outer support column 1 can travel on the rail 18 by wheels 19. A receiving beam 20 is stretched between the upper portions of the inner struts 2, and the four outer struts 1 can travel integrally. The receiving beam 20 is provided with a hydraulic jack device 3 similar to the hydraulic jack device described above, and can lift and lower heavy objects (W) suspended by the strands 40b. By installing the hydraulic jack device 3 on the receiving beam 20, the lift of the heavy object (W) can be lengthened, so that the heavy object (W) can be raised and lowered more than the height of the inner column 2. Become. That is, for example, a heavy object (W) in the basement can be lifted or a heavy object (W) can be suspended in the basement.

  According to the crane, the outer support column 1 is moved together with the inner support column 2 in a state in which the inner support column 2 is raised and the heavy object (W) suspended from the receiving beam 20 via the strand 40b is lifted. By suspending the heavy object (W), the heavy object (W) can be easily transported to the destination.

  By using the heavy lifting device of the present invention, the crane can be manufactured firmly in a short time and at low cost.

  Next, a lifter using the heavy article lifting apparatus of the present invention will be described with reference to the drawings.

  FIG. 7 is a front view showing a lifter using the heavy lifting device of the present invention.

  This lifter is composed of four heavy lifting devices according to the present invention that face each other (FIG. 7 is a front view, so only two units appear).

  In FIG. 7, the same reference numerals as those in FIGS. 1 to 3 denote the same components. That is, 1 is an outer support column, 2 is an inner support column, 3 is a hydraulic pressure composed of a strand 40 a stretched between upper and lower ends of the outer support column 1, and a hydraulic jack 43 fixed to the inner support column 2. It is a jack device.

  The inner support column 2 is fixed to the ground. A receiving beam 20 is stretched between the upper portions of the outer support columns 1. The receiving beam 20 is provided with a hydraulic jack device 3 similar to the hydraulic jack device described above, and can lift and lower heavy objects (W) suspended by the strands 40b. By installing the hydraulic jack device 3 on the receiving beam 20, the lifting height of the heavy object (W) can be increased, so that the heavy object (W) can be raised or lowered more than the lifting height of the outer support column 1. Become. That is, for example, a heavy object (W) in the basement can be lifted or a heavy object (W) can be suspended in the basement.

  According to the said lifter, if the outer side support | pillar 1 is raised, the heavy article (W) suspended from the receiving beam 20 via the strand 40b can be lifted.

  By using the heavy lifting device of the present invention, the lifter can be manufactured in a short time and at low cost.

  As described above, according to the present invention, in the heavy lifting device in which the outer column and the inner column in the outer column are assembled so as to be movable up and down by the hydraulic jack device, the outer column and the inner column are all attached. By using the existing H-shaped steel for mountain retaining, the heavy lifting device can be manufactured in a short time and at low cost. Moreover, if this heavy lifting device is applied to a crane or a lifter, these heavy machinery can be manufactured firmly in a short time and at low cost.

1: Outer strut 2: Inner strut 3: Hydraulic jack device 4: Reinforcement material 5: Reinforcement material 6: H-shaped steel 6A for mountain fastening: H-shaped steel 6B for outer strut 7: H-shaped steel for inner strut 7: H-shaped steel 8 : Flat plate 9: Bolt hole 10: Upper guide member 11: Flat plate 11A: Inner end 12: H-shaped steel 13: Guide hole 14: Guide wheel 15: Lower guide member 16: Guide wheel 17: Fixing member 18: Rail 19: Wheel 20: Receiving beam 31: Outer support 32: Inner support 33: Hydraulic jack device 34: Wheel 35: Guide rail 40: Strand 40a: Strand 40b: Strand 41a: Upper wire gripping device 41b: Lower wire gripping device 42a: Upper anchor Base plate 42b: Lower anchor base plate 43: Hydraulic jack 44: Cylinder 45: Piston 46a: Upper pressure Plate 46b: Lower pressure plate 47a: Upper release plate 47b: Lower release plate 48a: Upper anchor block 48b: Lower anchor block 49: Connecting rod 50a: Upper clapping cylinder 50b: Lower clapping cylinder 51a: Upper wire grip 51b: Lower Wire grip 52a: Piston 53a: Through hole 53b: Through hole

Claims (5)

In the heavy lifting device in which the outer support and the inner support in the outer support are assembled so as to be movable up and down by a hydraulic jack device,
The outer struts and the inner struts are each composed of four H-shaped steels, and the outer struts are arranged symmetrically with a gap so that the inner flanges face each other. The flanges are connected to each other, the outer support column and the inner support column are arranged so that the flanges are orthogonal to each other, and the hydraulic jack device is stretched between the upper and lower ends of the inner support column, A telescopic hydraulic jack fixed to the outer support column; first gripping means provided on a movable side of the hydraulic jack; and second gripping means attached to a fixed side of the hydraulic jack; At the time of expansion, the first gripping means grips the strand, and at the same time, the second gripping means releases the grip of the strand, and when the hydraulic jack is contracted. The second gripping means grips the strand, and at the same time, the first gripping means releases the gripping of the strand, and thus the inner strut is extended with respect to the outer strut by expansion and contraction of the hydraulic jack. A heavy lifting device characterized by lifting and lowering intermittently.   The heavy lifting device according to claim 1, wherein the outer flanges of the outer support columns are connected to each other by a reinforcing material.   3. The heavy lifting device according to claim 1, wherein inner flanges of the inner struts are connected to each other via a reinforcing material.   The strand is stretched between the upper and lower end portions of the outer column, and the hydraulic jack is fixed to the inner column, and thus the outer column is fixed to the inner column by expansion and contraction of the hydraulic jack. The heavy lifting device according to any one of claims 1 to 3, wherein the lifting device lifts and lowers intermittently.   5. The heavy lifting device according to claim 1, wherein the H-shaped steel is an existing H-shaped steel for mountain fixing.

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