JP2009228329A - Heavy load lifting device - Google Patents

Abstract

A weight lifting device capable of lifting a heavy object stably in a short time and at an arbitrary height. A heavy object lifting apparatus capable of arbitrarily selecting a lifting height stably in a short time. Providing equipment.
SOLUTION: A first support column 1 fixed vertically on a base 4, a second support column 2 incorporated in the first support column 1 so as to be movable up and down, and incorporated in the second support column 2 so as to be movable up and down. , A third support column 3 on which a heavy object is placed, a first elevating unit 5 that elevates and lowers the second prop 2, and a second elevating unit 11 that elevates and lowers the third support column 3 as the second prop 2 is moved up and down The second elevating means 11 includes first pulleys 12A and 12B attached to the upper inner side of the second support column 2, second pulleys 13A and 13B attached to the lower outer side of the third support column 3, and the third support column 3. Third pulleys 14A and 14B attached to the upper outer side of the wire rope 15A, one end fixed to the base 4 and the other end fixed to the base 4 via the first, second and third pulleys , 15B, and the second elevating means as the second elevating means 2 elevates / lowers by the first elevating means 5 The third column 3 through 1 is elevating.
[Selection] Figure 1

Description

  The present invention provides a heavy-weight lifting device, and in particular, for example, when a large structure is divided into a plurality of blocks for construction or dismantling, a heavy object composed of the divided heavy blocks can be stabilized in a short time. In addition, the present invention relates to a heavy article lifting / lowering device that can be reliably lifted / lowered to an arbitrary height.

  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 the 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 lift and lower a heavy object composed of a heavy block, and Japanese Patent Application Laid-Open No. 2001-55834 discloses a heavy object lifting / lowering apparatus including 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. 13 is a perspective view showing a conventional heavy lifting device installed around a column to be lifted and lowered, and FIG. 14 is a cross-sectional view showing a connecting portion of the column in the conventional heavy lifting device.

  As shown in FIG. 13, the conventional heavy lifting device includes an outer support 33A, an intermediate support 33B, an inner support 33C constructed vertically in a nesting manner, a guide tower 34 built around these, and a guide tower 34. The guide frame 35 is attached to the guide frame 35 so as to be movable up and down, the rod 36 is attached to the guide frame 35, and the jack 37 is installed on the upper portion of the guide tower 34 to raise and lower the rod 36. Each support 33A, 33B, 33C 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 35 is fixed to the outer column 33A. Next, the jack 37 is extended to raise the rod 36. As a result, the outer support 33 </ b> A rises together with the guide frame 35 by the stroke of the jack 37. Then, as shown in FIG. 14, the pin 38 is inserted into the pin hole (O) of the outer support column 33A and the intermediate support column 33B, and the outer support column 33A is fixed to the intermediate support column 33B. Thereafter, the fixing of the outer support 33A and the guide frame 35 is released, the jack 37 is reduced, the guide frame 35 is lowered, and the outer support 33A is fixed again to the intermediate support 33B. And after extending the jack 37, the outer support | pillar 33A is pinned again. By repeating this operation, the outer support 33A is raised to a predetermined height. Thereafter, the same operation as in the case of the outer column 33A is performed, and the intermediate column 33B and the inner column 33C are sequentially raised.

  Each column 33A, 33B, 33C is lowered by an operation reverse to that in the case of ascending.

JP 2001-55834 A

  According to the conventional heavy lifting device, if the heavy load is supported on the inner column 33C and the column 37 is repeatedly expanded and contracted by repeatedly performing the expansion and contraction operation of the jack 37 and the column pinning operation, the heavy component is reliably lifted and lowered. be able to.

  However, since it is necessary to alternately perform the expansion / contraction operation of the jack 37 and the pinning operation of the support column, it takes time to raise and lower the heavy object, and the height of the heavy object matches the pin hole (O). There was a problem that it was limited to the height position.

  Accordingly, an object of the present invention is to, for example, when a large structure is divided into a plurality of blocks for construction or dismantling, a heavy object composed of the divided large blocks can be stably stabilized in an arbitrary time. An object of the present invention is to provide a heavy lifting device that can be reliably lifted and lowered to a height.

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

  According to a first aspect of the present invention, a first support column fixed vertically on a base, a second support column incorporated in the first support column so as to be movable up and down, and incorporated in the second support column so as to be movable up and down. A third column on which a heavy object is placed, a first lifting unit that lifts and lowers the second column, and a second lifting unit that lifts and lowers the third column along with the lifting and lowering of the second column, The second elevating means is attached to the first pulley attached to the upper inner side of the second column, the second pulley attached to the lower outer side of the third column, and the upper outer side of the third column. A first pulley, one end fixed to the base, and the other end fixed to the base via the first pulley, the second pulley, and the third pulley; Along with the raising and lowering of the second support column by the raising and lowering means, the second raising and lowering means passes through the second raising and lowering means. Struts and has a characteristic to lift.

  According to a second aspect of the present invention, in the first aspect of the invention, the first elevating means includes a cable body vertically stretched on the base and a gripping device. A pressure plate, an anchor block, a release plate, an anchor base plate having a plurality of through holes that vertically penetrate the cable body, and a plurality of clamping cylinders that are fixed to the anchor block on the cylinder side and fixed to the release plate on the piston side And a grip that is slidably inserted into the through hole of the anchor block, contacts a lower end of the through hole of the pressure plate via a spring, and an upper end of the pressure plate is fixed to the lower surface of the pressure plate. A multi-penetration with a lower end fixed to the upper surface of the release plate. A connecting block, a spacer block having an upper end fixed to the anchor block, penetrating the release plate, and a lower end fixed to the anchor base plate, and a jack. The gripping device is attached to the cord body. The anchor base plate of the lower gripping device is fixed to the cylinder side of the jack, and the anchor base plate of the upper gripping device is fixed to the piston side of the jack. It is what has.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a column guide means between the first column and the second column and between the second column and the third column. It is characterized in that is provided.

  According to a fourth aspect of the present invention, the column guide means includes a plurality of wheels provided at intervals in the height direction inside the first column and the second column, the second column, It is characterized by comprising a guide rail provided in the outer height direction of the third support column on which the wheel travels.

  The invention described in claim 5 is characterized in that, in the invention described in claim 4, the wheel is composed of a slide member that slides along the guide rail.

  The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the first support column is provided with an inclination control means for controlling the inclination of the second support column. The column is characterized in that another tilt control means for controlling the tilt of the third column is provided.

  The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the cord body is made of PC steel stranded wire or rod, and the pillar is made of a polygonal column. It is what has.

  According to the present invention, for example, when a large structure is divided into a plurality of blocks to be constructed or disassembled, the divided heavy blocks can be stably raised and lowered to an arbitrary height in a short time. Can be made.

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

  FIG. 1 is a schematic perspective view showing a state in which the heavy article lifting / lowering device of the present invention is extended, FIG. 2 is a cross-sectional view showing a connection portion between a second support column and a third support column, and FIG. FIG. 4 is a schematic perspective view showing a state in which the heavy lifting device of the present invention is contracted, FIG. 5 is a front view showing the relationship between the pulley and the wire rope, and FIG. It is explanatory drawing which shows the operation | movement principle of a heavy article raising / lowering apparatus, (A) is a figure which shows the state before support | pillar raise, (B) is a figure which shows the state after support | pillar raise, FIG. 7 is FIG. FIG. 8 is a partial front view showing an attachment state of the tilt control means, FIG. 9 is a cross-sectional view showing the first elevating means, and FIG. 10 shows a gripping device of the first elevating means. FIG. 11 is a sectional view, FIG. 11 is a plan view showing a pressure plate, and FIG. 12 is a perspective view showing a grip.

  In FIG. 1 to FIG. 5, 1 is a first support column fixed vertically on a base 4, 2 is a second support column incorporated in the first support column 1 so as to be movable up and down, and 3 is a second support column 2. It is the 3rd support | pillar integrated so that raising / lowering was possible. Each of the struts 1, 2, and 3 is made of a steel square column having a truss structure, and a heavy object such as a large chimney block divided into a plurality of pieces is supported on the upper portion of the third strut 3. If each support | pillar 1, 2, 3 is divided | segmented so that an assembly is possible, it will be easy to carry and assemble at the time of construction and dismantling. In addition, each pillar 1, 2, and 3 may be a polygonal column other than a square column.

  5 is the 1st raising / lowering means to raise / lower the 2nd support | pillar 2, The outline of the 1st raising / lowering means 5 is demonstrated referring FIG. Details of the first elevating means 5 will be described later.

  The first lifting / lowering means 5 includes a PC steel strand 6 as a cable body vertically stretched on the base 4, and an upper gripping device 7 </ b> A and a lower side provided at two locations above and below the PC steel strand 6. It consists of a gripping device 7B. The cord body may be a steel rod.

  The lower end of the PC steel stranded wire 6 is fixed to the central portion on the base 4, and the upper end is fixed to a fixed base 8 assembled on the base 4. Each of the upper gripping device 7A and the lower gripping device 7B includes a jack 9, and can alternately hold and release the PC steel strand 6, and the upper gripping device 7A is fixed to the piston side of the jack 9, The gripping device 7B is fixed to the cylinder side of the jack 9. The jack 9 is fixed to a movable frame 10 assembled at the lower part of the second column 2.

  According to the 1st raising / lowering means 5, the 2nd support | pillar 2 raises / lowers with respect to the 1st support | pillar 1 as follows.

  As shown in FIG. 6 (A), the upper gripping device 7A is closed and the PC steel wire 6 is gripped. At the same time, the lower gripping device 7B is opened and the gripping of the PC steel wire 6 is released. To reduce the jack 9. Thereby, the 2nd support | pillar 2 raises only 1 stroke of the jack 9, and will be in the state shown to FIG. 6 (B). Next, the upper gripping device 7A is opened to release the grip of the wire 6 from the PC steel. At the same time, the lower gripping device 7B is closed to grip the wire 6 of the PC steel, and the jack 9 is extended in this state. At this time, since the wire 6 is gripped by the PC steel by the lower gripping device 7B, there is no possibility that the second support column 2 is lowered. Next, the upper gripping device 7A is closed again, and the lower gripping device 7B is opened, so that the jack 9 is reduced. Thereafter, these operations are repeated.

  On the other hand, in order to lower the second support column 2, an operation reverse to the above operation may be performed. That is, in order to lower the second support column from the state shown in FIG. 6B to the state shown in FIG. 6A, the upper gripping device 7A is closed and the PC steel wire 6 is gripped, and at the same time the lower side The gripping device 7B is opened to release the grip of the wire 6 from the PC steel, and the jack 9 is extended in this state. Thereby, the 2nd support | pillar 2 falls only for 1 stroke of the jack 9, and will be in the state shown to FIG. 6 (A). Next, the upper gripping device 7A is opened to release the gripping of the wire 6 from the PC steel. At the same time, the lower gripping device 7B is closed to grip the PC steel wire 6 and the jack 9 is reduced in this state. At this time, since the wire 6 is gripped by the PC steel by the lower gripping device 7B, there is no possibility that the second support column 2 is lowered. Next, the upper gripping device 7A is closed again, the lower gripping device 7B is opened, and the jack 9 is extended. Thereafter, these operations are repeated.

  In this way, the second support column 2 can be raised and lowered intermittently with respect to the first support column 1 by repeatedly opening and closing the upper and lower gripping devices 7A and 7B and extending and retracting the jack 9. In addition, since the expansion-contraction length of the jack 9 can be adjusted arbitrarily, the raising / lowering distance of the 2nd support | pillar 2 can also be selected arbitrarily.

  11 is the 2nd raising / lowering means which raises / lowers the 3rd support | pillar 3 with the raising / lowering of the 2nd support | pillar 2, and is provided in each surface of the support | pillar. The second lifting and lowering means 11 includes first pulleys 12A and 12B attached to the upper inner side of the second support column 2, second pulleys 13A and 13B attached to the lower outer side of the third support column 3, and the third support column 3 Third pulleys 14A and 14B attached to the upper outer side, one end is fixed to the base 4, and the other end is based on the first pulleys 12A and 12B, the second pulleys 13A and 13B, and the third pulleys 14A and 14B. It consists of wire ropes 15A and 15B fixed to the base 4. The wire rope 15A is fixed to the base 4 via the first pulley 12A, the second pulley 13A, and the third pulley 14A, and the wire rope 15B is passed through the first pulley 12B, the second pulley 13B, and the third pulley 14B. The base 4 is fixed.

  A wire tension adjusting jig 27 and a pressure equalizing jack 28 are attached to the wire ropes 15A and 15B, so that the tension applied to the wire ropes 15A and 15B can be adjusted to be the same.

  According to the second lifting / lowering means 11, the third pillar 3 is lifted / lowered as the second pillar 2 is lifted / lowered by the first lifting / lowering means 5. That is, when the second support column 2 rises, as shown in FIG. 1, the first pulleys 12A and 12B approach the second pulleys 13A and 13B, and the third support column 3 rises by this distance. On the other hand, when the 2nd support | pillar 2 descend | falls, as shown in FIG. 4, 1st pulley 12A, 12B and 2nd pulley 13A, 13B will space apart, and the 3rd support | pillar 3 will fall only by this distance.

  Next, the detail of the 1st raising / lowering means 5 is demonstrated, referring FIGS. 9-12.

  This first elevating means 5 is disclosed in Japanese Patent Application Laid-Open No. 10-59691. As a result of being able to uniformly maintain the load applied to the wire from the PC steel that raises and lowers heavy objects, a specific PC steel is obtained. The PC steel does not cut or stretch due to the concentrated load on the stranded wire, so that the super-heavy object can be moved up and down reliably, and it can be accurately tuned by inverter control.

  As shown in FIG. 9, the first elevating means 5 has a lower end fixed to the central portion on the base 4 and an upper end fixed to a fixed base 8 assembled on the base 4. It consists of the PC steel strand 6 and the gripping device 16 shown in FIG. The cord body may be a steel rod.

  The gripping device 16 includes a pressure plate 17 having a plurality of (seven) through holes 17a for vertically penetrating a plurality of (7 in this example) PC steel wires 6, an anchor block 18, a release plate 19, and an anchor base plate. 20, a plurality of clamping cylinders 21 fixed on the cylinder side to the anchor block 18 and a piston side fixed to the release plate 19, and slidably fitted into the through holes 18 a of the anchor block 18. A plurality of grips 23 that are brought into contact with the lower end of the hole 17a via springs 22 and an upper end fixed to the lower surface of the pressure plate 17, penetrate the anchor block 18, and have a lower end fixed to the upper surface of the release plate 19. The upper end is fixed to the connecting rod 24 and the anchor block 18. It is, through the release plate 19, a spacer block 25 having a lower end secured to the anchor base plate 20 consists of a hydraulic jack 26..

  The anchor base plate 20 of the lower gripping device 16B is fixed to the cylinder side of the hydraulic jack 26, the anchor base plate 20 of the upper gripping device 16A is fixed to the piston side of the hydraulic jack 26, and the cylinder side of the hydraulic jack 26 is the movable base 10. It is fixed to.

  In order to raise the 2nd support | pillar 2 by the 1st raising / lowering means 5, the clamping cylinder 21 of the lower side gripping apparatus 16B is shrunk, and the grip 23 resists the elastic force of the spring 23 from the through-hole 18a of the anchor block 18. Pull out and loosen. At this time, the clamping cylinder 21 of the upper gripping device 16 </ b> A is extended, and the grip 23 is inserted into the through hole 18 a of the anchor block 18 by the elastic force of the spring 22 to grip the PC steel wire 6. . Next, when the hydraulic jack 26 is extended, the second support column 2 is raised by the stroke. Next, the grip 23 of the upper gripping device 16A is loosened, the PC steel wire 6 is gripped by the grip 23 of the lower gripping device 16B, and the hydraulic jack 26 is contracted. Then, the grip 23 of the lower gripping device 16B is loosened, the PC steel wire 6 is gripped by the grip 23 of the upper gripping device 16A, and the hydraulic jack 26 is extended. Thereby, the 2nd support | pillar 2 can be raised intermittently.

  When the second support column 2 is lowered, an operation opposite to that in the case of ascent may be performed.

  According to the first elevating means 5, the pressure plate 17 and the release plate 19 have a function of moving up and down integrally by the plurality of connecting rods 24 penetrating the anchor block 18. By expanding and contracting, the pressure plate 17 and the release plate 19 are moved up and down simultaneously, and a plurality of grips 23 are forcibly inserted into the through holes 18a of the anchor block 18 so that each PC steel wire 6 is gripped uniformly. Or the 2nd support | pillar 2 can be raised / lowered reliably by loosening.

  If the column guide means is provided between the first column 1 and the second column 2 and between the second column 2 and the third column 3, the second column 3 and the third column 3 can be smoothly moved up and down. Done.

  As shown in FIG. 7, the column guide means includes a plurality of wheels 29 provided at intervals in the height direction inside the first column 1 and the second column 2, the second column 2 and the second column 2. It consists of a guide rail 30 on which the wheel 29 travels provided in the outer height direction of the three columns 3.

  In addition, the guide rail 30 may be provided inside the first support column 1 and the second support column 2, and a plurality of wheels 29 may be provided at intervals in the outer height direction of the second support column 2 and the third support column 3. Further, the wheel 29 may be replaced with a slide member that slides along the guide rail 30.

  As shown in FIG. 8, if at least some of the wheels 29 are used as the inclination control means 31, the perpendicularity of the second support column 2 and the third support column 3 can be always secured. The inclination control means 31 includes an inclination control jack 32 having a wheel 29 attached to the tip and an inclination detection sensor (not shown), and the inclination detection sensor detects the inclination of the second column 3 and the third column 3. The postures of the second column 3 and the third column 3 are automatically corrected by the tilt control jack 32 so that the second column 3 and the third column 3 are always kept vertical.

  According to the heavy object lifting and lowering device of the present invention configured as described above, when a large structure is divided into a plurality of blocks for construction or dismantling, a heavy object composed of the divided heavy blocks is removed. If it puts on the 3rd support | pillar 3 and raises / lowers the 2nd support | pillar 2 by the 1st raising / lowering means 5, the 3rd support | pillar 3 will also be raised / lowered by the 2nd raising / lowering means 5 in connection with this, Therefore A heavy article is made into arbitrary height. It can be moved up and down reliably.

It is a schematic perspective view which shows the state which extended the heavy article raising / lowering apparatus of this invention. It is sectional drawing which shows the connection part of a 2nd support | pillar and a 3rd support | pillar. It is the sectional view on the AA line of FIG. It is a schematic perspective view which shows the state which shrunk the heavy article lifting / lowering apparatus of this invention. It is a front view which shows the relationship between a pulley and a wire rope. It is explanatory drawing which shows the principle of operation of the heavy article raising / lowering apparatus of this invention, (A) is a figure which shows the state before support | pillar raise, (B) is a figure which shows the state after support | pillar raise. It is the BB sectional view taken on the line of FIG. It is a partial front view which shows the attachment state of an inclination control means. It is sectional drawing which shows a 1st raising / lowering means. It is sectional drawing which shows the gripping apparatus of the 1st raising / lowering means. It is a top view which shows a pressure plate. It is a perspective view which shows a grip. 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: first support column 2: second support column 3: third support column 4: base 5: second lifting means 6: PC steel strand 7A: upper gripping device 7B: upper gripping device 8: fixed mount 9: jack 10: Movable frame 11: second lifting means 12A, 12B: first pulley 13A, 13B: second pulley 14A, 14B: third pulley 15A, 15B: wire rope 16: gripping device 16A: lower gripping device 16B: upper gripping device 17: Pressure plate 17a: Through hole 18: Anchor block 18a: Through hole 19: Release plate 20: Anchor base plate 21: Clapping cylinder 22: Spring 23: Grip 24: Connecting rod 25: Spacer block 26: Hydraulic jack 27: Wire Tension adjusting jig 28: pressure equalizing jack 29: wheel 30: guy Drain 31: Tilt control means 32: Tilt control jack 33A: Outer strut 33B: Intermediate strut 33C: Inner strut 34: Guide tower 35: Guide frame 36: Rod 37: Jack 38: Pin

Claims (7)

  A first column vertically fixed on a base, a second column incorporated in the first column so as to be movable up and down, and a first column on which a heavy object built in the second column can be moved up and down is mounted. 3 support pillars, a first lifting means for raising and lowering the second pillar, and a second lifting means for raising and lowering the third pillar as the second pillar is raised and lowered. A first pulley attached to the upper inner side of the two struts, a second pulley attached to the lower outer side of the third prop, a third pulley attached to the upper outer side of the third prop, and one end of the base pulley And a wire rope fixed to the base via the first pulley, the second pulley, and the third pulley, and the other end of the second support column is lifted and lowered by the first lifting means. Accordingly, the third support column is lifted and lowered via the second lifting means. Heavy lifting device to.   The first elevating means includes a cable body vertically stretched on the base and a gripping device, and the gripping device includes a pressure plate and an anchor having a plurality of through holes that vertically penetrate the cable body. A block, a release plate, an anchor base plate, a plurality of clamping cylinders having a cylinder side fixed to the anchor block, and a piston side fixed to the release plate; and the pressure slidably inserted into the through holes of the anchor block; A grip that contacts the lower end of the through hole of the plate via a spring, and a plurality of connections in which the upper end is fixed to the lower surface of the pressure plate, penetrates the anchor block, and the lower end is fixed to the upper surface of the release plate The upper end of the rod and the anchor block is fixed, The spacer comprises a spacer block penetrating the release plate and having a lower end fixed to the anchor base plate, and a jack. The gripping device is provided at two locations on the upper and lower sides along the cable body. The heavy lifting device according to claim 1, wherein the anchor base plate is fixed to the cylinder side of the jack, and the anchor base plate of the upper gripping device is fixed to the piston side of the jack.   The weight according to claim 1 or 2, wherein a column guide means is provided between the first column and the second column and between the second column and the third column. Object lifting device.   The column guide means includes a plurality of wheels provided at intervals in the height direction inside the first column and the second column, and an outer height direction of the second column and the third column. The heavy lifting device according to claim 3, wherein the weight lifting device is provided with a guide rail on which the wheel travels.   5. The heavy lifting device according to claim 4, wherein the wheel includes a slide member that slides along the guide rail.   The first support column is provided with an inclination control unit for controlling the inclination of the second support column, and the second support column is provided with another tilt control unit for controlling the tilt of the third support column. The heavy lifting device according to any one of claims 1 to 5.   The heavy article lifting / lowering device according to any one of claims 1 to 6, wherein the cable body is made of PC steel stranded wire or rod, and the support post is made of a polygonal column.

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