WO2017082330A1 - 異形ブロックのクランプ装置 - Google Patents
異形ブロックのクランプ装置 Download PDFInfo
- Publication number
- WO2017082330A1 WO2017082330A1 PCT/JP2016/083318 JP2016083318W WO2017082330A1 WO 2017082330 A1 WO2017082330 A1 WO 2017082330A1 JP 2016083318 W JP2016083318 W JP 2016083318W WO 2017082330 A1 WO2017082330 A1 WO 2017082330A1
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- WIPO (PCT)
- Prior art keywords
- block
- contact pad
- buffer member
- storage frame
- clamp device
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
Definitions
- the present invention relates to a clamping device for gripping a deformed block when installing or moving a deformed block used for wave extinction or the like.
- Patent Document 2 Japanese Utility Model Publication No. 63-136687
- Patent Document 3 Japanese Patent Laid-Open No. 6-286773
- the deformed block is a heavy block of several tens of tons and a maximum of 80 tons, and is a concrete block that does not use reinforcing materials such as reinforcing bars inside, so the part clamped by the clamping arm of the clamping device There was a problem of being easily damaged. Specifically, when the odd-shaped block is clamped by the thin clamping arm of the clamping device, the weight of the block concentrates on the contact surface with the clamping arm, which causes the irregular block to be scratched or broken. Due to the damage and breakage of the deformed block, the clamping device is substantially not used for new installation of the deformed block.
- Patent Document 1 and Patent Document 3 are intended to eliminate the danger of staking a block installed on the seabed or the like, and are equipped with a gripping device having three clamping arms in the sea.
- the removal device used for the work of suspending and gripping the block and removing it has a limited use.
- a clamp device that uses a protective pad for preventing damage to the gripping object and preventing slippage at a contact portion of the clamping claw with the gripping object.
- a rubber plate is used as an anti-slip material on the inner surface side of the clamp
- Patent Document 5 Japanese Patent Laid-Open No. 2011-73863
- a non-slip pad is provided at the lower end of the gripping claw in which the uneven surface formed by the bolt is covered with rubber in order to avoid damage to the gripping object.
- Patent Document 4 and Patent Document 5 are relatively lightweight objects, they can be gripped even with a simple rubber plate or a pad with a rubber-coated surface. When used for heavy objects, there is a problem that sufficient slip prevention cannot be ensured or the pad itself weak against shearing force is damaged.
- an object of the present invention is to solve the above-described problem, and to reliably grip without deforming a deformed block without damaging the deformed block as a grip target. It is possible to provide a clamping device that can be applied to a new installation of a deformed block.
- the present invention provides a clamp device for a deformed block having the following configuration.
- the clamping device of the present invention comprises: A suspension member that is suspended by a cargo handling device, a support body located below the suspension member, and extends downward from the support body so as to be openable and closable on the outer periphery of the support body, and can hold a deformed block A plurality of sandwiching arms, and a buffer member having a contact pad that is provided on the distal end side of the sandwiching arm and contacts the deformed block when sandwiched, The contact pad is provided so that a contact surface with the deformed block protrudes from the inner surface of the holding arm toward the deformed block and is in a direction along the surface at the attachment position.
- the contact pad is preferably made of an elastic material in which a reinforcing fiber member is embedded, and is provided so as to protrude from the edge of the storage frame toward the deformed block.
- an elastomer resin or the like can be used in addition to a rubber material such as natural rubber or synthetic rubber.
- the contact pad is embedded in a state in which each metal rope is erected using a metal rope formed by twisting metal strands as the reinforcing fiber member.
- the metal ropes can be arranged in a grid pattern with predetermined intervals. In addition, it is preferable that the respective small ends of the metal rope are disposed so as to be exposed on the surface of the contact pad.
- the contact pad may be configured such that a fabric made of a synthetic fiber material is laminated with the elastic material layer.
- the storage frame may be configured to be fixed to the distal end portion of the clamping arm and configured in an annular shape so as to delimit the storage area therein.
- the said clamping arm is equipped with the attachment hole which can insert the said buffer member in the front-end
- the holding arm may include a mounting hole in which the buffer member can be fitted at a distal end portion and surround the contact pad of the buffer member by a side wall, and the storage frame may be configured as a side wall of the mounting hole.
- the mounting hole can be provided in the mounting hole via an elastic member provided in the mounting hole.
- the sandwiching arm includes a mounting hole that can accommodate the buffer member provided at a tip portion,
- the buffer member is preferably provided in the attachment hole via an elastic member provided in the storage frame.
- the deformed block can be held without being damaged.
- the contact pad protrudes from the inner surface of the holding arm to the deformed block side, and is provided so as to be in a direction along the surface at the mounting position, so when the contact surface comes into contact with the deformed block, The holding arm does not touch the deformed block and damage it.
- the contact pad is surrounded by a storage frame and is made of an elastic material such as synthetic rubber having a reinforcing fiber member inside. Therefore, the contact pad is made thick and damaged when holding the deformed block.
- the reinforcing fiber member embedded in the storage frame and the inside can be firmly held without being damaged even when a deformed block, which is a heavy object, is gripped by the reinforcing fiber member embedded inside. Can do.
- a metal strand or a synthetic resin fiber can be suitably used as the reinforcing fiber member. Particularly preferably, by exposing the facet of the metal rope to the surface side, it is possible to increase the friction with the deformed block and to increase the effect of anti-slip.
- the deformed block is sandwiched, the risk of breakage or dropping can be reduced, and it can be suitably used for installation of the deformed block.
- FIG. 1 It is a figure which shows typically the structure of the crane apparatus used together with the clamp apparatus of the odd-shaped block concerning embodiment of this invention. It is a figure which shows the structure of the apparatus main body of the clamp apparatus of the odd-shaped block of FIG. It is a side view which shows typically the state which the clamping arm of the clamp apparatus of FIG. 2 opened. It is a top view which shows typically the structure of the clamp apparatus of FIG. It is a side view which shows typically the structure of the front-end
- FIG. 1 It is a schematic diagram showing a configuration of the buffer member, (a) is a view seen from the contact surface side, (b) is a view seen from the side surface, (c) is a sectional view taken along the line CC. It is an enlarged view which shows the structure of the universal suspension used for the clamp apparatus of FIG. It is a top view which shows the structure of the universal suspension of FIG. It is sectional drawing which shows the structure of the universal suspension of FIG. It is a side view which shows typically the structure of the front-end
- the odd-shaped block clamping device 1 is used by being suspended from a crane 101 as an example of a cargo handling device installed on a trolley or the like as shown in FIG.
- a block B (hereinafter sometimes abbreviated as a block) is suspended by the clamping device 1 to relocate or install it at a harbor or the like for revetment or wave extinguishing of a beach or a breakwater.
- the crane 101 is wound around the wire take-up reel 103, and the clamp device 1 is connected to and suspended from the main wire 102 taken out from the main wheel 104 at the tip of the crane 101.
- the wire take-up reel 103 winds and unwinds the main wire 102 by the driving device 106.
- the suspension position of the clamp device 1 is determined by winding and unwinding the main wire 102, and the depth position of the clamp device 1 and the like can be specified from the unwinding amount of the main wire 102 and the like.
- the crane is provided with a sub-wire 102a configured to be operable independently of the main wire 102, and is arranged to be suspended from a sub-wheel 104a provided at the tip of the crane.
- the sub-wire 102a is used to adjust the inclination angle of the apparatus main body 1 to be described later, and the inclination angle of the apparatus main body 1 can be changed by varying the amount of extension of the sub-wire 102a relative to the main wire 102. Can be adjusted.
- the operation of the main wire 102 and the sub wire 102a is performed by operating the driving device 106 by an operation unit (not shown) provided in a trolley or the like.
- a hydraulic hose 109 wound around a turn wheel 107 suspended from an intermediate part of the crane is connected to the clamp device 1.
- the hydraulic hose 109 is wound around the hose reel 108 and is fed out according to the hanging position of the clamp device 1 to operate the hydraulic cylinder 7 of the clamp device 1 described later according to the operation of the hydraulic unit 110.
- the clamping device 1 is provided with three hydraulic cylinders 7 and the hydraulic cylinders 7 for driving them operate as one body, but each hydraulic cylinder operates independently.
- the hydraulic unit 110 may be configured as three systems.
- the hydraulic unit 110 is provided on a trolley or the like, and operates a hydraulic cylinder 7 of the clamp device 1 to operate an opening / closing operation of the clamping arm 4 described later.
- the configuration of the clamping device 1 will be described later.
- FIG. 2 to FIG. 4 are diagrams showing the configuration of the apparatus main body of the odd-shaped block clamping apparatus according to the present embodiment.
- the apparatus main body 1 according to the present embodiment includes a universal hanger 2 as an example of a hanger member coupled to a crane, a support body 3 fixed to a lower portion of the universal hanger 2, Three clamping arms 4 are provided along the outer periphery of the support body 3 for clamping a block B to be suspended.
- the universal suspension 2 has a structure that can arbitrarily change the inclination angle and the turning angle with respect to the support body 3 located below. A mechanism for changing the inclination angle and turning of the universal suspension 2 will be described later.
- the support body 3 is located below the free suspension 2 and has a cap portion 10 which is formed at the lower end and is provided with a top surface portion 12 and a side wall 11 extending downward and extending downward, and is open at the bottom. Yes.
- a bracket 5 for attaching the holding arm 4 to the outer surface of the side wall 11 of the cap portion 10 is provided.
- the cap portion 10 has a storage space 13 into which the leg portion 112 of the block B is inserted in an area surrounded by the side wall.
- the storage space 13 is a leg when the block B is tilted in a state where the leg portion 112 of the block B is inserted, the holding arm 4 is closed and the leg base portion 111 of the block B is supported.
- the tip of the portion 112 is configured to have a size so that the block B does not fall by being caught by the side wall 11.
- the length dimension of the clamping arm 4, the diameter dimension of the cap portion 10, and the length dimension of the side wall 11 can be determined by the size of the block B that can be clamped by the apparatus main body 1.
- the storage space 13 may be configured such that not only the leg portion 112 of the block B, that is, the tip portion of the leg portion but also the entire leg portion is stored depending on the size of the block B.
- hydraulic cylinders 7 are respectively provided on brackets 8 a provided on the cylinder mounting portion 8 located above the support body 3, and the cylinder rods of these hydraulic cylinders 7 are pivotally attached to the upper end of the holding arm 4. ing.
- an accumulator (not shown) for each hydraulic cylinder 7 is incorporated in an intermediate portion 9 provided between the cylinder mounting portion 8 and the cap portion 10 of the support body 3.
- the holding arm 4 has a pivot 6 provided at an intermediate portion pivotally attached to brackets 5 arranged at intervals of 120 degrees along the outer peripheral portion of the support body 3.
- the lower portion is provided so as to extend downward from the support body 3.
- Each clamping arm 4 is connected to a hydraulic cylinder 7 at the upper end, and the lower portion opens and closes as the hydraulic cylinder 7 expands and contracts.
- the front end portion 14 of the sandwiching arm 4 is bent inward so that the block B can be supported from the lower side.
- three buffer members 15 having different sizes are provided so as to protrude from the inner surface 14a.
- the buffer member 15 has a contact pad 18 having an elastically deformable contact surface 16 so as to abut against the surface of the block when the block B is sandwiched and prevent damage to the block surface by the sandwiching arm.
- the buffer member 15 is arranged so that the contact surface 16 of the contact pad 18 is in a direction substantially along the surface 14 a of the tip portion of the holding arm 4.
- each buffering member bends independently according to the surface shape of the block, so it is easy to follow the shape of the block and increase the contact area. Can be secured. Thereby, concentration of the load on the block can be reduced, and damage to the block and the buffer member 15 can be reduced.
- Fig. 7 shows the configuration of the buffer member.
- the buffer member of FIG. 7 shows the largest one provided on the upper side of the front end portion of the holding arm
- the buffer members 15 of other sizes have the same basic configuration.
- the buffer member 15 defines an outer shape and fills the inside of the storage frame 17 with a metal storage frame 17 surrounding the contact pad 18. And a contact pad 18 disposed on the surface.
- the storage frame 17 is made of an annularly formed metal having a storage frame bottom surface 17b and side walls 17s provided around the storage frame bottom surface 17b.
- the storage frame 17 uses stainless steel having a thickness of 16 mm.
- the metal material to be used and the thickness dimension can be appropriately designed according to the design specifications of the clamp device 1.
- the outer dimensions of the storage frame may be appropriately determined according to the width of the tip end portion 14 of the holding arm.
- the contact pad 18 provided on the inner side of the storage frame is made by reinforcing a synthetic rubber as an example of an elastic material with a metal rope 19 and is disposed so as to protrude from the upper end of the side wall of the storage frame 17.
- the amount of protrusion from the upper end of the storage frame 17 to the contact surface 16 is 20 mm, but is not limited to this, and the pressure deformation of the contact pad 18 due to contact with the block B to be described later Even in such a case, it is only necessary that the surface of the block is not in contact with the storage frame 17.
- the contact pads 18 are arranged in a grid pattern at predetermined intervals with the metal ropes 19 raised from the bottom surface of the bottomed container-like mounting bracket 21, and the synthetic rubber filler 20 is filled between the metal ropes 19. It is created by.
- the mounting bracket 21 has an outer shape that can be inserted into the internal space of the storage frame 17, and is partitioned by a reinforcing wall 21 a provided in the center portion in the present embodiment.
- the small edge surface of the metal rope 19 is exposed to the contact surface 16 of the buffer member 15 and abuts against the surface of the block when the block B is sandwiched.
- the ratio of the edge surface of the metal rope 19 to the entire contact surface is preferably about 30 to 70%.
- a stainless steel rope is used as the metal rope 19 from the viewpoint of preventing corrosion in the sea.
- a rope having a diameter of 10 mm is used, but the present invention is not limited to this, and can be appropriately selected according to the specifications of the clamping device.
- a thin wire used for the metal rope 19 is used, and the twisted structure is 7 ⁇ 37 or 7 ⁇ 19. It is preferable that However, it is not limited to this, It can select suitably according to the magnitude
- the universal suspension 2 is configured such that the tilt angle and the turning angle of the clamp device 1 can be changed.
- the configuration of the universal suspension will be described.
- FIGS. 8 to 10 are enlarged views showing the configuration of the universal suspension of the clamp device.
- a three-dimensional coordinate axis is defined in the drawings in order to clarify the tilt axis and the swing axis, and the direction of the tilt angle and the swing angle by the free suspension will be described along these coordinate axes.
- the universal hanger 2 includes a hanger 30 coupled to the main wire 102 of the crane 101, a joint 31 connected to the hanger 30, and a swivel device 32 coupled to the joint 31.
- the hanging bracket 30 is formed in an annular shape so as to be connected to the main wire 102 at the upper portion, and is connected to the upper side of the joint 31 by a bolt 33 extending in the Y-axis direction. Thereby, as shown by the arrow 93 in FIG. 10, the hanging bracket 30 can rotate around the Y axis.
- the joint 31 has a U-shaped cross section with the lower side open, and the upper side is connected to the hanging bracket 30.
- a rib 34 for connecting to the hanging fitting 30 is provided along the X direction, and the hanging fitting 30 is connected so as to sandwich the rib 34.
- the swivel device 32 is fixed to the leg portion 35 of the joint 31 by a connecting shaft 36 along the X-axis direction, and can rotate around the X-axis with respect to the joint 31 as indicated by an arrow 92 in FIG. ing.
- the swivel device 32 supports the support shaft 3a located at the upper end of the support body 3 so as to be rotatable around the Z axis.
- the swivel device 32 is formed in an annular shape and includes a cylindrical collar 39 into which a connecting shaft is inserted, and a through hole 37 extending in the Z-axis direction is provided at the center.
- the support shaft 3 a is inserted into the through hole 37, and the support shaft 3 a is supported by the connecting shaft 36.
- the connecting shaft 36 is provided with two thrust bearings 38 so as to sandwich the connecting shaft 36 from above and below, and engages with a collar 39 that is extrapolated to the connecting shaft 36.
- a bearing 39a is provided above and below the thrust bearing via a spacer 39d, and a collar 39 and a split collar 39b are connected to an outer ring and an inner ring of the bearing 39a, respectively.
- the split collar 39b is fitted into an annular groove provided at the upper end of the support shaft 3a to prevent the support shaft 3a from coming off.
- press plates 39c On the top and bottom of the collar 39, press plates 39c for preventing the bearing 39a from falling off are provided.
- a swivel motor 40 is provided in the swivel device 32 as a power source for rotating the support shaft 3a.
- the rotation shaft of the turning motor 40 is provided with a drive gear 40a, and the support shaft 3a is turned by the drive of the turning motor 40 by the drive chain 40c wound around the drive gear 40b provided on the support shaft 3a.
- the apparatus main body 1 is in a state in which the leg portion 112 is not inserted into the storage space 13 as shown in FIG. Even when the block B in the direction facing the direction is gripped, the fall can be prevented.
- the leg base portion 111 of the block B is disposed so as to approach the lower end of the side wall 11 of the cap portion 10. Even if the block B is tilted when it is lifted, the tilt of the block is limited by contacting the lower end of the side wall 11 extending in a suspended state. Thereby, the fall of the block B can be prevented.
- the leg portion 112 of the block when the leg portion 112 of the block is upward, the leg portion 112 is inserted into the storage space 13. When the leg portion 112 of the block is downward, the base portion of the leg portion is inserted. By gripping the block so as to approach the lower end of the side wall 11, the block gripped in any orientation can be prevented from falling.
- the clamping device 1 When the block clamping device 1 according to the present embodiment having the above-described configuration is used to suspend the block B, the clamping device 1 is connected to a main wire 102 of a crane provided in a trolley or the like, and the display device Then, after detecting the position of the apparatus body 1 and the leg portion 112 of the block B from the amount of extension of the main wire 102, the operation is performed so that the leg portion 112 fits in the storage space 13. Further, the swivel arm is turned so that the holding arms 4 provided at intervals of 120 degrees are positioned between the landing legs of the block, and the turning angle of the holding arms 4 is adjusted.
- the above-described universal joint 2 The angle of the clamping device 1 can be adjusted.
- the auxiliary wire 102a is connected to one of the tilting suspenders 22 provided in each holding arm 4 and the amount of extension of the auxiliary wire 102a is manipulated.
- the position is changed while maintaining the orientation of the apparatus body 1 as it is, and the leg 112 is inserted to the back of the storage space 13.
- the hydraulic cylinder is operated to close the clamping arm 4 and pinch the block B.
- the tip of the sandwiching arm 4 is bent so as to follow the outer shape of the leg base portion 111 of the block B, so that it is lower than the equator portion 113 of the leg base portion 111 of the leg portion 112 inserted into the storage space 13. It arrange
- the contact pad 18 of the buffer member 15 is deformed in the thickness direction by the holding force that supports the weight of the block B, and the surface of the block B is damaged. ease.
- the contact pad 18 is configured such that the edge surface of the metal rope 19 is exposed to the contact surface 16 in a state where the contact pad 18 stands in the thickness direction.
- the contact pad 18 is housed inside the housing frame 17 and a sufficient thickness dimension is secured, the contact pad 18 is surrounded by the side wall 17s of the housing frame 17, so that deformation in the shearing direction is suppressed, Damage due to a shearing force in a direction along the surface of the contact pad 18 is suppressed.
- the block B when the block B is suspended, the block B may be inclined depending on the clamping position of the clamping arm 4. At this time, since the leg portion 112 is stored in the storage space 13, the tip of the leg portion 112 abuts on the inner side of the side wall, and the block B is supported by the sandwiching arm 4 and the cap portion 10 to maintain the balance. Dropping of B from the apparatus main body 1 is prevented. Further, since the contact is supported by the buffer member 15, the scratching damage of the holding arm due to the block displacement is suppressed.
- FIG. 11 shows a partially enlarged view of the clamp device according to the second embodiment.
- the clamping device according to the present embodiment has the same configuration as the clamping device of the first embodiment except for the configuration of the buffer member provided at the distal end portion of the clamping arm 4 and the mounting configuration thereof. The explanation will focus on the points.
- the clamping device has a mounting hole 42 for inserting the buffer member 41 at the distal end portion 14 of the holding arm.
- the mounting hole 42 is configured to have a size that allows the storage frame 43 of the buffer member 41 to be fitted therein, and is fixed in the mounting hole 42 through an elastic member 42b fixed to the bottom surface 42a.
- the elastic member 42 b is made of an elastic material such as rubber, and is interposed between the storage frame 43 and the bottom surface 42 a of the mounting hole 42.
- the elastic member 42b is deformed when a pressing force is applied to the buffer member 41 in accordance with the contact with the block B, and allows the buffer member 41 to move into the mounting hole 42, and an excessive instantaneous load is applied to the block B. Is prevented from being added.
- the buffer member 41 has a configuration in which a contact pad 44 made of synthetic rubber or the like is filled in a bottomed container-like storage frame 43 so as to protrude from the upper end of the storage frame 43 as in the first embodiment. It is. Since the buffer member 41 according to the present embodiment is provided so as to be able to advance and retract in the mounting hole 42 as described above, the buffer member 41 is configured to have a larger thickness than the buffer member 41 used in the first embodiment.
- the contact pad 44 used in the buffer member 41 of the present embodiment employs a structure in which synthetic fiber fabrics are embedded as shown in FIG.
- synthetic fibers organic synthetic fibers, metal fibers, inorganic fibers, and the like can be widely used as long as they have high tensile strength and elastic modulus that can achieve the purpose of preventing damage to the contact pads 44 against heavy objects,
- an aramid fiber, Zylon (trade name), carbon fiber, or the like can be suitably used.
- These synthetic fibers are made into a cloth shape and laminated in multiple layers with a synthetic rubber adhesive 45 to form the contact pad 44.
- the contact pad 44 configured as described above can prevent damage in the surface direction by the synthetic fiber layer 46 while ensuring elasticity in the thickness direction by the synthetic rubber adhesive 45 and the synthetic fiber layer 46. Further, the deformation in the direction along the surface is suppressed by the side wall of the storage frame 43, and the damage due to the shearing force in the direction along the surface of the contact pad 44 is suppressed.
- the contact pad 44 also functions as a buffer member by being pressed against the block B and compressed by the pinching force of the holding arm when grasping, following the shape of the block, increasing the contact area, and reducing the surface pressure.
- FIG. 13 is a partially enlarged view of the clamp device according to the third embodiment. Since the clamp device according to the present embodiment shares the same configuration as the clamp device of the second embodiment except for the configuration of the buffer member provided at the distal end portion of the sandwiching arm 4, the difference will be mainly described below. explain.
- the clamping device has a mounting hole 48 for inserting the buffer member 47 at the distal end portion 14 of the holding arm.
- the mounting hole 48 has a size that allows the buffer member 47 to be fitted therein, and is fixed in the mounting hole 48 via an adhesive 48b formed of an elastic material fixed to the bottom surface 48a.
- the elastic member 48 b is made of an elastic material, and is interposed between the buffer member 47 and the bottom surface 48 a of the mounting hole 48.
- the elastic member is deformed when a pressing force is applied to the buffer member 47 in contact with the block B, and allows the buffer member 47 to move into the mounting hole 48, and an excessive instantaneous load is applied to the block B. Prevent joining.
- the buffer member 41 includes a mounting base 49 configured substantially the same as the opening of the mounting hole 48, and a contact pad 50 formed of a synthetic rubber or the like positioned on the upper surface of the mounting base 49.
- the buffer member 47 according to the present embodiment can be advanced and retracted into the attachment hole 48 as described above, and is attached so that only the contact pad 50 protrudes from the opening of the attachment hole 48.
- the contact pads 50 used in the buffer member 47 according to the present embodiment are arranged in a grid pattern with the metal ropes 51 standing on the upper surface of the mounting base 49, and are synthesized between the metal ropes 51. It is created by filling a rubber filler 52.
- the small edge surface of the metal rope 51 is exposed to the contact surface 53 of the contact pad 50 and contacts the surface of the block when the block B is sandwiched.
- the ratio of the facet of the metal rope 51 to the entire contact surface is preferably about 30 to 70%.
- the side wall 48 s around the mounting hole 48 functions as a storage frame surrounding the buffer member 47, so that deformation in the shearing direction is suppressed, and the surface of the contact pad 18 is suppressed. Breakage due to shearing force in the direction along is suppressed. Further, the contact pad 50 is deformed in the thickness direction by the sandwiching force that supports the weight of the block B while the elastic modulus in the thickness direction is secured by the filler 52 of the synthetic rubber, and the damage on the surface of the block B is alleviated.
- the contact pad 50 is configured such that the facet of the metal rope 51 is exposed to the contact surface 53 in a state where the contact pad 50 is erected in the thickness direction, the individual strands of the metal rope are firmly attached to the surface of the block B. The slip of the block B is prevented by biting in.
- the buffer member is provided at the distal end portion of the holding arm, so that the block can be held without being damaged.
- the cushioning member has a rubber contact pad and a reinforcing fiber member that reinforces it inside the storage frame that defines the outer shape, so it is resistant to shearing and is damaged even when a heavy block is gripped. It can be firmly clamped without causing it.
- the holding arm can arbitrarily change the inclination angle and the turning angle by the free suspension tool, it can be suitably used for installation work that requires installation by specifying the angle and direction of the block.
- the buffer member can be widely applied as long as it has a configuration in which a contact pad reinforced with fibers is installed inside the storage frame constituting the outer frame so as to protrude from the upper end of the storage frame.
- the contact pad is sufficient if it can secure a strength that can prevent breakage due to shear force, and the form of the fiber embedded therein is not particularly limited to the above embodiment, and is reinforced with a fiber reinforcing member. Any configuration can be widely applied.
- a spring interposed between the bottom surface 48 a of the mounting hole 48 and the mounting base 49 of the buffer member 47 As an example of an elastic member for attaching the buffer member 47 in the mounting hole so as to be able to advance and retract, a spring interposed between the bottom surface 48 a of the mounting hole 48 and the mounting base 49 of the buffer member 47. It is also possible to use 55.
- the contact pad is mounted on the surface 14 a of the front end 14 of the holding arm 4 in addition to fitting the contact pad into the recess provided in the holding arm.
- the fixing member 60 may be protruded and fixed so as to be fitted into the recess 62 provided in the contact pad 61. At this time, both of them may be fixed together with an adhesive or bolt fastening (not shown).
- the fixing member 60 inserted into the contact pad 60 reinforces the contact pad 61, suppresses deformation in the shear direction, and suppresses breakage due to shear force in the direction along the surface of the contact pad 18.
- a tetrapod (trade name) is used as a block and the tip of the leg is inserted and held in the cap, but the block used is particularly limited. Instead, a configuration for assisting the gripping by the clamp device can be widely adopted according to the shape of the block.
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Abstract
Description
荷役装置により吊り下げられる吊具部材と、前記吊具部材の下方に位置する支持胴体と、前記支持胴体から下側に伸び前記支持胴体の外周部に開閉自在に設けられ、異形ブロックを挟持可能な複数の挟持アームと、前記挟持アームの先端側に設けられ挟持時に前記異形ブロックに当接する接触パッドを有する緩衝部材を備え、
前記接触パッドは、前記異形ブロックとの接触面が前記挟持アームの内側表面より前記異形ブロック側に突出し、前記取り付け位置における表面に沿った方向となるように設けられていることを特徴とする。
前記接触パッドは、内部に補強繊維部材を埋設した弾性体材料で構成され、前記収納枠の縁端より前記異形ブロック側に突出するように設けることが好ましい。なお、弾性体材料としては、天然ゴムや合成ゴム等のゴム材料の他、エラストマー樹脂などが使用可能である。
前記緩衝部材は、前記収納枠に設けられた弾性部材を介して前記取付孔に設けられることが好ましい。
第2実施形態にかかるクランプ装置の部分拡大図を図11に示す。本実施形態にかかるクランプ装置は、挟持アーム4の先端部に設けられている緩衝部材の構成及びその取り付け構成を除いて第1実施形態のクランプ装置と構成を共通にするため、以下、当該相違点を中心に説明する。
第3実施形態にかかるクランプ装置の部分拡大図を図13に示す。本実施形態にかかるクランプ装置は、挟持アーム4の先端部に設けられている緩衝部材の構成を除いて第2実施形態のクランプ装置と構成を共通にするため、以下、当該相違点を中心に説明する。
本発明は、添付図面を参照しながら好ましい実施形態に関連して充分に記載されているが、この技術の熟練した人々にとっては種々の変形や修正は明白である。そのような変形や修正は、添付した請求の範囲による本発明の範囲から外れない限りにおいて、その中に含まれると理解されるべきである。
2 自在吊り具
3 支持胴体
3a 支持軸
4 挟持アーム
5 ブラケット
6 枢軸
7 油圧シリンダ
8 シリンダ取り付け部
8a ブラケット
9 中間部
10 キャップ部
11 側壁
12 天面部
13 収納空間
14 先端部
15,41,47,61 緩衝部材
16,53 接触面
17,43 収納枠
17b 収納枠底面
17s 収納枠側壁
18,44,50 接触パッド
19,51 金属ロープ
20,52 充填剤
21 取り付け金具
21a 補強壁
30 吊金具
31 継ぎ手
32 スイベル装置
33 ボルト
34 リブ
35 脚部
36 連結軸
37 貫通孔
38 スラストベアリング
39 カラー
39a ベアリング
39b 割りカラー
39c 押さえ板
39d スペーサー
40 旋回モータ
40a,40b 駆動ギア
40c 駆動チェーン
42,48 取付孔
42a,48a 底面
42b,48b 弾性部材
48s 側壁
45 合成ゴム接着剤
46 合成繊維層
49 取付台
55 スプリング
60 固定部材
62 凹部
100 台船
101 クレーン
102 主ワイヤ
102a 副ワイヤ
103 ワイヤ巻取りリール
104 主ホイール
104a 副ホイール
106 駆動装置
107 ターンホイール
108 ホースリール
109 油圧ホース
110 油圧ユニット
111 脚部付け根部分
112 脚部
B 異形ブロック
Claims (11)
- 荷役装置により吊り下げられる吊具部材と、前記吊具部材の下方に位置する支持胴体と、前記支持胴体から下側に伸び前記支持胴体の外周部に開閉自在に設けられ、異形ブロックを挟持可能な複数の挟持アームと、前記挟持アームの先端側に設けられ挟持時に前記異形ブロックに当接する接触パッドを有する緩衝部材を備え、
前記接触パッドは、前記異形ブロックとの接触面が前記挟持アームの内側表面より前記異形ブロック側に突出し、前記取り付け位置における表面に沿った方向となるように設けられている、クランプ装置。 - さらに、前記接触パッドの周囲を囲繞する収納枠を備え、
前記接触パッドは、内部に補強繊維部材を埋設した弾性体材料で構成され、前記収納枠の縁端より前記異形ブロック側に突出するように設けられている、請求項1に記載のクランプ装置。 - 前記接触パッドは、金属素線を撚り合わせた金属ロープを前記補強繊維部材とし、それぞれの前記金属ロープを立てた状態で埋設されている、請求項2に記載のクランプ装置。
- 前記金属ロープは、所定間隔をおいて格子状に配列されている、請求項3に記載のクランプ装置。
- 前記接触パッドは、前記金属ロープのそれぞれの小口が前記接触パッドの表面に露出するように配置されることを特徴とする、請求項3又は4に記載のクランプ装置。
- 前記接触パッドは、合成繊維素材で構成された布帛を前記弾性体材料の層と積層するように構成されている、請求項1に記載のクランプ装置。
- 前記収納枠は、前記挟持アームの先端部分に固定され環状に構成されて内部に前記収納領域を画定することを特徴とする、請求項1に記載のクランプ装置。
- 前記挟持アームは、その先端部分に前記緩衝部材を嵌入可能な取付孔を備え、
前記緩衝部材は、前記取付孔内に取り付けられる、請求項7に記載のクランプ装置。 - 前記挟持アームは、先端部分に前記緩衝部材を嵌入可能で側壁によって前記緩衝部材の接触パッドを囲繞する取付孔を備え、
前記収納枠は、前記取付孔の側壁として構成されている、請求項1に記載のクランプ装置。 - 前記緩衝部材は、前記取付孔に設けられた弾性部材を介して前記取付孔内に設けられることを特徴とする、請求項9に記載のクランプ装置。
- 前記支持胴体は、前記挟持アームに囲まれた領域に設けられた下方へ延びる下垂部材を備え、当該領域に前記下垂部材で画定され、下向きに開口して前記異形ブロックの少なくとも脚部の先端が挿入される収納空間が形成されている、請求項1に記載のクランプ装置。
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CN108178102A (zh) * | 2017-11-23 | 2018-06-19 | 浙江交工集团股份有限公司 | 一种自锁型夹具及其安装方法 |
JP2019085179A (ja) * | 2017-11-01 | 2019-06-06 | 大裕株式会社 | 異形ブロックのクランプ装置 |
CN111559698A (zh) * | 2020-04-08 | 2020-08-21 | 钱志伦 | 一种用于圆形钢材搬运的吊装机构 |
CN112357855A (zh) * | 2020-11-09 | 2021-02-12 | 山东钢铁集团日照有限公司 | 一种铁包采用夹钳加揭盖方法及其实施装置 |
CN112408187A (zh) * | 2020-12-25 | 2021-02-26 | 吴保林 | 一种防破损的石材夹具 |
WO2023013724A1 (ja) * | 2021-08-06 | 2023-02-09 | 株式会社神戸製鋼所 | 建設機械におけるバケット制御装置 |
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JP2019085179A (ja) * | 2017-11-01 | 2019-06-06 | 大裕株式会社 | 異形ブロックのクランプ装置 |
JP7015519B2 (ja) | 2017-11-01 | 2022-02-03 | 大裕株式会社 | 異形ブロックのクランプ装置 |
CN108178102A (zh) * | 2017-11-23 | 2018-06-19 | 浙江交工集团股份有限公司 | 一种自锁型夹具及其安装方法 |
CN108178102B (zh) * | 2017-11-23 | 2023-11-10 | 浙江交工集团股份有限公司 | 一种自锁型夹具及其安装方法 |
CN111559698A (zh) * | 2020-04-08 | 2020-08-21 | 钱志伦 | 一种用于圆形钢材搬运的吊装机构 |
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CN112357855A (zh) * | 2020-11-09 | 2021-02-12 | 山东钢铁集团日照有限公司 | 一种铁包采用夹钳加揭盖方法及其实施装置 |
CN112408187A (zh) * | 2020-12-25 | 2021-02-26 | 吴保林 | 一种防破损的石材夹具 |
WO2023013724A1 (ja) * | 2021-08-06 | 2023-02-09 | 株式会社神戸製鋼所 | 建設機械におけるバケット制御装置 |
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