JP5583339B2 - Heavy lifting device - Google Patents

Description

  The present invention relates to a heavy article lifting device in which a plurality of support columns are assembled so as to be able to be lifted and lowered in a nested manner, and it is possible to reduce the lifting time of the heavy load and to reduce the size of the device. This is related to a heavy lifting device that can easily increase the lifting height of a heavy load.

  For example, there is a construction method in which a chimney is constructed or disassembled by dividing the chimney into a plurality of blocks as one of construction or dismantling methods of a large chimney of 100 m or more installed in a factory or the like.

  In this construction method, it is necessary to raise and lower a heavy block, that is, a heavy object, and Japanese Patent Application Laid-Open No. 2001-55834 discloses a heavy object elevating device comprising the following. Hereinafter, this heavy lifting device will be referred to as a conventional heavy lifting device and will be described with reference to the drawings.

  FIG. 8 is a perspective view showing a conventional heavy load elevating device, and FIG. 9 is a cross-sectional view showing a connecting portion of a column in the conventional heavy load elevating device.

  As shown in FIGS. 8 and 9, the conventional heavy lifting device includes a guide tower 32 constructed around an outer support 31 </ b> A, an intermediate support 31 </ b> B, and an inner support 31 </ b> C constructed vertically in a nested manner, and a guide tower 32. The guide frame 33 is mounted so as to be able to move up and down, the rod 34 is mounted on the guide frame 33, and the jack 35 is installed on the upper portion of the guide tower 32 and moves up and down the rod 34. Each support 31A, 31B, 31C is formed with pin holes (O) at intervals in the height direction.

  In order to raise the column with the above-described conventional heavy lifting device, first, the guide frame 33 is fixed to the outer column 31A. Next, the jack 35 is extended to raise the rod 34. As a result, the outer support 31 </ b> A rises together with the guide frame 33 by the stroke of the jack 35. Thereafter, as shown in FIG. 9, the pin 36 is inserted into the pin hole (O) of the outer column 31A and the intermediate column 31B, and the outer column 31A is fixed to the intermediate column 31B. Thereafter, the fixation between the outer support 31A and the guide frame 33 is released, the jack 35 is reduced, the guide frame 33 is lowered, and the outer support 31A is fixed again to the intermediate support 31B. Then, after extending the jack 35, the outer support 31A is pinned again. This operation is repeated to raise the outer support 31A to a predetermined height. Thereafter, the same operation as in the case of the outer support 31A is performed to raise the intermediate support 31B and the inner support 31C sequentially.

  Each column 31A, 31B, 31C is lowered by an operation reverse to that in the case of ascending.

JP 2001-55834 A

  According to the above-described conventional heavy lifting device, the heavy load is reliably lifted by supporting the heavy load on the inner column 31C and repeatedly extending and retracting the column by repeatedly extending and retracting the jack 35 and pinning the column. be able to.

  However, since it is necessary to repeatedly perform the expansion and contraction operation of the jack 35 and the pinning operation of the support column, it takes time to lift and lower the heavy object, and it is necessary to use a large number of jacks. There was a problem that the height of the lift could not be increased too much because the number of support posts was limited.

  Accordingly, the object of the present invention is to shorten the lifting time of heavy objects and to reduce the size of the apparatus, and to increase the lifting height of heavy objects by increasing the number of telescopic assemblies. An object of the present invention is to provide a weight lifting device that can be used.

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

According to the first aspect of the present invention, an inner support column having a bottom plate, an intermediate support column having a bottom plate, and an outer support column are assembled in this order from the inside toward the outside so as to be movable up and down. The first and second lifting / lowering means for lifting and lowering the inner strut and the second lifting and lowering means for lifting and lowering the intermediate strut as the inner strut is lifted and lowered are provided. 1 lifting means is attached to the jack side, the jack, the first gripping means provided on the piston side of the jack and capable of gripping and releasing the jack cord, and the cylinder side of the jack. A second gripping means capable of gripping and releasing the jack cable body; and on the bottom plate of the intermediate column, there are four rectangular columns and a first top plate fixed on the rectangular column. And The jack rig is vertically stretched between the bottom plate of the intermediate column and the first top plate, and there are four pieces on the bottom plate of the inner column. A second gantry comprising an L-shaped column and a second top plate fixed on the L-shaped column is constructed, and a space through which the square column passes is formed on the bottom plate of the inner column, and the L-shaped column The column is lifted and lowered with the rectangular column as a guide, the jack is fixed to the second top plate, and the inner column supports the first holding unit and the second holding unit while alternately opening and closing the first holding unit and the second holding unit. The second lifting and lowering means is for a column disposed between the inner column and the outer column via the pulley and a pulley attached to the intermediate column. And the intermediate strut includes the first lifting / lowering means. Those having features to intermittently lifting via the second lifting means with the vertical movement of the inner post with.

  According to a second aspect of the present invention, in the heavy lifting device according to the first aspect of the present invention, at least one other column is nested in the outer side of the outer column, and the columns are It is characterized in that it is connected by a lifting means similar to the second lifting means.

  The invention according to claim 3 is characterized in that, in the heavy article lifting apparatus according to claim 1 or 2, guide means is provided between the columns.

According to a fourth aspect of the present invention, in the heavy article lifting apparatus according to the third aspect, the guide means includes a wheel and a guide rail on which the wheel rolls.

  The invention according to claim 5 is characterized in that, in the heavy article lifting apparatus according to claim 4, the wheel is a slide member that slides along the guide rail.

  The invention according to claim 6 is the heavy article lifting device according to any one of claims 1 to 5, wherein the jack cord is made of a PC steel strand or a rod, and the column is a polygonal column It is characterized by comprising.

  A seventh aspect of the invention is characterized in that, in the heavy article lifting device according to any one of the first to sixth aspects, the strut rope is composed of a wire rope or a chain.

  According to the present invention, it is possible to raise and lower a heavy object in a short time only by operating the jack, and basically only one jack for raising and lowering the support column is required, so that the apparatus can be reduced in size and further nested. Since the number of columns to be assembled in a formula is not limited in principle, the lifting height of the heavy object can be easily increased.

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

  1 is a partially omitted perspective view showing a heavy article lifting apparatus according to the present invention, FIG. 2 is a partial longitudinal sectional view showing a heavy article lifting apparatus according to the present invention, and FIG. 3 is a sectional view taken along line AA in FIG. 4 is an operation explanatory view of the lifting means in the heavy lifting device of the present invention, (A) is an explanatory view showing a state before the inner column is raised, (B) is a state after the inner column is raised. FIG. 5 is a partial longitudinal sectional view showing another heavy lifting device of the present invention, FIG. 6 is a partially omitted perspective view showing another heavy lifting device of the present invention, and FIG. It is the sectional view on the AA line of FIG. 2 which abbreviate | omitted.

In FIG. 1 to FIG. 3, 1 is an inner column having a bottom plate 1 </ b> A, 2 is an intermediate column having a bottom plate 2 </ b> A, and 3 is an outer column. Each support 1, 2, and 3 is formed in a square pipe shape, and an inner support 1, an intermediate support 2, and an outer support 3 are assembled in a nested manner in this order from the inside to the outside. Each of the columns 1, 2, and 3 may be a polygonal column other than the square column as in this example, or may be a column of a truss structure. A heavy object (W) such as a large chimney block divided into a plurality of parts is supported on the upper part of the inner support column 1 (see FIG. 2).

  4 is the 1st raising / lowering means for raising / lowering the inner side support | pillar 1. As shown in FIG. The first elevating means 4 has a lower end fixed to the bottom plate 2 </ b> A of the intermediate strut 2, and is arranged vertically along the intermediate strut 2, and the jack rope 5 made of PC steel strand or rod, and the inner strut 1 The jack 6 installed in the center, the first gripping means 7 (see FIG. 4) provided on the piston 6A side of the jack 6 and capable of gripping and releasing the jack cable body 5, and the cylinder 6B of the jack 6 It consists of the 2nd holding means 8 (refer FIG. 4) attached to the side and which can hold | grip and release the cable body 5 for jacks.

On the bottom plate 2A of the intermediate column 2, a first gantry 9 comprising four rectangular columns 9A and a first top plate 9B fixed on the column 9A is constructed. The jack cable body 5 is vertically stretched between the bottom plate 2A and the first top plate 9B. On the bottom plate 1A of the inner support column 1, a second gantry 10 comprising four L-shaped support columns 10A and a second top plate 10B fixed on the support column 10A is constructed. A space (S) through which the support column 9A passes is formed in the bottom plate 1A, and the support column 10A moves up and down using the support column 9A as a guide. The jack 6 is fixed to the second top plate 10 </ b > B of the second mount 10 of the inner column 1.

  The inner support column 1 moves up and down intermittently as follows by expanding and contracting the jack 6 while alternately opening and closing the first gripping means 7 and the second gripping means 8.

  In order to raise the inner strut 1, first, in the state shown in FIG. 4A, the jack cable body 5 is gripped by the first gripping means 7, and the jack cable body 5 is gripped by the second gripping means 8. To release. In this state, the jack 6 is extended to raise the cylinder 6B. As a result, as shown in FIG. 4B, the inner support column 1 together with the gantry 10 is raised by one stroke of the jack 6 (indicated by H in FIG. 4). Next, the jack cord 5 is gripped by the second gripping means 8, the gripping of the jack cord 5 by the first gripping means 7 is released, and the jack 6 is contracted. Thereafter, the jack cable body 5 is gripped by the first gripping means 7, the gripping of the jack cable body 5 by the second gripping means 8 is released, and the jack 6 is extended in this state.

  By repeating this operation, the inner support column 1 rises intermittently. In order to lower the inner support column 1, an operation opposite to that in the case of ascent may be performed.

  Reference numeral 11 denotes second elevating means for elevating the intermediate strut 2 as the inner strut 1 is elevated, and a plurality of second elevating means 11 are provided around the intermediate strut 2. The second elevating means 11 includes a pulley 12 attached to the bottom plate 2A of the intermediate column 2 and a wire rope disposed between the bottom plate 1A of the inner column 1 and the upper end of the outer column 3 via the pulley 12. It consists of a rope 13. In addition, you may change a wire rope into a chain. The intermediate strut 2 moves up and down intermittently via the second lifting and lowering means 11 as the inner strut 2 moves up and down by the first lifting and lowering means 4.

  According to the heavy article lifting / lowering device of the present invention configured as described above, the heavy article (W) supported on the upper portion of the inner support column 1 is lifted and lowered as follows.

  First, in order to raise a heavy article (W), as mentioned above, the 1st raising / lowering means 4 is operated and the inner side support | pillar 1 is raised intermittently. When the inner column 1 rises intermittently, the intermediate column 2 rises intermittently via the second lifting means 11 as the inner column 1 rises. That is, since the support rod body 13 stretched between the bottom plate 1A of the inner support column 1 and the upper end of the outer support column 3 is hung on the pulley 12 attached to the bottom plate 2A of the intermediate support column 2, As the column 1 rises, the intermediate column 2 rises intermittently. As a result, the weight (W) rises intermittently to a desired height.

  On the other hand, in order to lower the heavy object (W), as described above, the first elevating means 4 may be operated to lower the inner support column 1 intermittently. As a result, the inner support column 1 is intermittently lowered via the second lifting / lowering means 11, so that the heavy object (W) is intermittently lowered to a desired height.

  Thus, according to the present invention, unlike the conventional heavy load elevating device, it is not necessary to repeatedly perform the expansion / contraction operation of the jack and the pinning operation of the support column, so the lifting time of the heavy load (W) can be shortened. I can plan. In addition, since only one first lifting / lowering means 4 is basically required, the apparatus can be reduced in size.

  As shown in FIGS. 5 and 6, on the outside of the outer column 3, another column 14 is assembled in a nested manner, and the outer column 3 and the other column 14 are moved up and down in the same manner as the second lifting unit 11. As the inner strut 1 is moved up and down, the intermediate strut 2 and the outer strut 3 are lifted and lowered. In addition, two or more separate struts 14 can be nested. Since the number of the other support | pillar 14 assembled | assembled in a nesting type is not restrict | limited in principle, the raising / lowering height of a heavy article can be made high easily.

  As shown in FIG. 7, as a guide means, if a wheel 15 is provided on the inner surface side of the intermediate column 2 and a guide rail 16 on which the wheel 15 rolls along the longitudinal direction is provided on the outer surface side of the inner column 1, The inner support column 1 can be moved up and down stably with respect to the intermediate support column 2. If the same guide means is provided between the intermediate support column 2 and the outer support column 3, the intermediate support column 2 can be moved up and down stably with respect to the outer support column 3.

  As the guide means, the wheel 15 may be replaced with a slide member that slides along the guide rail 16. Alternatively, the guide rail 16 may be provided inside the intermediate support 2 along the longitudinal direction thereof, and the wheel 15 or the slide member that rolls along the guide rail 16 may be provided outside the inner support 1.

It is a partial abbreviation perspective view showing a heavy article lifting device of this invention. It is a fragmentary longitudinal cross-section which shows the heavy article raising / lowering apparatus of this invention. It is the sectional view on the AA line of FIG. It is operation | movement explanatory drawing of the raising / lowering means in the heavy article raising / lowering apparatus of this invention, (A) is explanatory drawing which shows the state before a raise of an inner side support | pillar, (B) is explanatory drawing which shows the state after a raise of an inner side support | pillar It is. It is a partial longitudinal cross-section which shows the other heavy load raising / lowering apparatus of this invention. It is a partial abbreviation perspective view which shows the other heavy load raising / lowering apparatus of this invention. It is the sectional view on the AA line of FIG. 2 which abbreviate | omitted one part. It is a perspective view which shows the conventional heavy article raising / lowering apparatus. It is sectional drawing which shows the connection part of the support | pillar in the conventional heavy load raising / lowering apparatus.

Explanation of symbols

1: inner strut 1A: bottom plate 2: intermediate strut 2A: bottom plate 3: outer strut 4: first lifting means 5: jacking cord 6: jack 6A: piston 6B: cylinder 7: first gripping means 8: second gripping Means 9: 1st mount 9A: support 9B: 1st top 10: 2nd mount 10A: support 10B: 2nd top 11: 2nd raising / lowering means 12: pulley 13: cord body 14: another support 15 : Wheel 16: Guide rail

Claims (7)

A heavy load lifting device in which an inner column having a bottom plate, an intermediate column having a bottom plate, and an outer column are assembled so as to be able to be raised and lowered in this order from the inside to the outside, and a heavy load is supported on the inner column. In
First elevating means for elevating and lowering the inner strut, and second elevating means for elevating the intermediate strut as the inner strut is raised and lowered, the first elevating means includes a jack cord A jack, a first gripping means provided on the piston side of the jack capable of gripping and releasing the jack cord, and a gripping of the jack cord mounted on the cylinder side of the jack and A second holding means capable of being released, and a first gantry comprising four rectangular columns and a first top plate fixed on the rectangular column is constructed on the bottom plate of the intermediate column, The jack rope is vertically stretched between the bottom plate of the intermediate column and the first top plate, and four L-shaped columns and the L-shaped column are disposed on the bottom plate of the inner column. A second rack composed of a second top plate fixed on the top A space through which the square column passes is formed in the bottom plate of the inner column, the L column is raised and lowered with the square column as a guide, and the jack is mounted on the second top plate The inner support column is raised and lowered intermittently by expanding and contracting the jack while alternately opening and closing the first gripping unit and the second gripping unit, and the second lifting unit is attached to the intermediate column. An attached pulley; and a support rope arranged between the inner support post and the outer support post via the pulley; and the intermediate support is used for raising and lowering the inner support by the first lifting means. Accordingly, the heavy lifting device is lifted intermittently via the second lifting means.   The outside strut further includes at least one other strut being assembled in a nested manner, and the struts are connected by a lifting means similar to the second lifting means. Item 2. The heavy article lifting apparatus according to Item 1.   The heavy article lifting / lowering apparatus according to claim 1 or 2, wherein guide means is provided between the columns. 4. The heavy article lifting apparatus according to claim 3, wherein the guide means includes a wheel and a guide rail on which the wheel rolls.   The heavy article lifting device according to claim 4, wherein the wheel is a slide member that slides along the guide rail.   The heavy lifting device according to any one of claims 1 to 5, wherein the jack rope is made of a PC steel wire or a rod, and the column is a polygonal column.   The heavy article lifting apparatus according to any one of claims 1 to 6, wherein the support rope body includes a wire rope or a chain.

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