JP5529438B2 - Crane rope hanging structure - Google Patents

Description

  The present invention relates to a rope hanging structure of a crane (transfer crane) that performs container storage work in a container yard.

  As a rope hanging structure of a crane that performs container storage work in a container yard, a crane wire-leaving structure in which ropes are arranged in a V shape on each of four rope-wrapping virtual surfaces constituting the side surface of an inverted pyramid (for example, , Or refer to Patent Document 1.) Alternatively, a cargo handling lifting device in which ropes are respectively arranged in an X shape on four rope-wrapping virtual surfaces constituting a rectangular parallelepiped side surface is known (see, for example, Patent Document 2). ).

  However, Patent Document 1 merely uses the rigidity of the rope arranged in a V shape to suppress the shaking of the container during traveling and traversing. On the other hand, Patent Document 2 includes means for lifting and skewing the container, but it is necessary to operate a plurality of actuators in conjunction with each other by using hydraulic pressure. There is a disadvantage that unbalance or container runout occurs.

Japanese Patent No. 3268224 Japanese National Patent Publication No. 10-507435

  The present invention suppresses the swing of a container or a suspension tool during traveling and traversing, while the structure of the crane or rope can be quickly and accurately skewed despite its simple structure. It is to provide a hanging structure.

(1) rope hanging structure of the crane according to the present invention is to Tsu支the hanger by a plurality of rope drawn out from one of the drum on the trolley, and, in a crane provided with a skew compensation device on the trolley, the hanger first assumed at both ends around the longitudinal, in the second rope winding imaginary plane, the two pair of rope drawn from the drum, triangle between said hanging member and said trolley Are formed so that each hypotenuse is directed in a direction away from each other, and further, the pair of ropes sandwiches a sheave of the same axis from both sides in the center of both ends in the longitudinal direction of the hanger , on the other hand, the third assumed at both ends around the transverse direction of the hanger, in the fourth rope winding imaginary plane, the two pair of rope drawn from the drum, and said hanging member and said trolley Pass over so that each hypotenuse to form a triangular face each other between, and and is characterized that you the triangle is formed by the respective one of the ropes together are all congruent.

(2) rope hanging structure of the crane according to the present invention, in the above-mentioned (1), a drum provided at one end of the trolley corresponding to the longitudinal direction of the front end of the hanger, the axis of the drum shaft a first sheave set provided and at both ends a central front and rear longitudinal direction of the hanger in a direction perpendicular to the core, the axis is at the four corners of the axis and parallel and said trolley of said first sheave set of sheaves a second sheave set provided, a third sheave group axis is provided on the counter-drum side of the parallel and the trolley and the axis of the drum, the axis is the axis of the first sheave group sheave orthogonal and and a fourth sheave group provided at the four corners of the sling, and a fifth sheave group axis is provided at the center of the parallel and the trolley and the axis of said drum, said from the drum first, first to Tsu支the hanger via a second sheave set, a second set of b A triangle formed in the first rope winding virtual surface that assumes the longitudinal direction of the front end portion of the hanger in-flop, said from the drum third, first, the hanging member through a second sieve group fifth, sixth triangles formed into a pair of second rope winding virtual plane assumed to end after the longitudinal direction of the hanger rope of, the from the drum fourth to Tsu支a first five sheaves group and the third, fourth, fourth, eighth and third, transverse seventh the crane with a set of rope that Tsu支the hanger via a fifth sheave group third assumed to front and rear ends, and is characterized in that all the triangle congruent to form a triangle fourth rope winding virtual plane.

(3) The rope hanging structure of the crane according to the present invention is the above (1), in the center of the trolley, instead of the drum provided at one side end of the trolley corresponding to the front end in the longitudinal direction of the hanging tool. provided with a drum, a first sheave group axis is provided in the longitudinal direction of the front and rear end center of and the hanger in a direction perpendicular to the axis of the drum, the axis of the first sheave group sheave a second sheave set provided at the four corners of the axis and parallel and said trolley, and a third sheave group axis is provided at both side ends of the parallel and the trolley and the axis of the drum, the shaft core a fourth sheave group but provided at the four corners of the orthogonal and said hanging member and the axis of the first sheave group sheave, fifth the axis is provided at the center of the axis and parallel and said trolley of said drum and a sheave set, said from the drum third, first, second sheave group First, second and fifth, first, second rope wound that assumes both ends around the longitudinal direction of the hanging member in each pair of rope sixth to Tsu支the hanger via multiplied by the triangle formed on a virtual surface, said from the drum third, fourth, fourth to Tsu支the hanger via a fifth sheave group, eighth and third, each pair of the seventh third, it is characterized in that all the triangle congruent to form a triangle fourth rope winding virtual plane assumed at both ends around the transverse direction of the hanger rope.

(4) rope hanging structure of the crane according to the present invention, the above (1) to (3), the bottom of the trolley side of all the triangles formed by multiplying passing rope between said hanging member and said trolley It is characterized by being located in

  The present invention relates to a crane in which a suspension tool is supported by a plurality of ropes drawn from one drum, and the first and second rope-wrapping virtual surfaces assumed at the longitudinal ends of the suspension tool are drawn from the drum. In addition, a pair of two ropes is formed so as to form a triangle between the hanger and the trolley so that the hypotenuses are directed away from each other. In the fourth rope wrapping virtual plane, a set of two ropes drawn from the drum is formed so that a triangle is formed between the hanger and the trolley so that each hypotenuse faces each other. Therefore, all of the 8 ropes (2 x 4 sets) included in the four rope wrapping virtual planes assumed around the suspension have truss structure, and the container or the suspension Suppressor for suppressing force les is now improved.

  Further, according to the present invention, a parallel link type skew compensation device is provided on the trolley, and the drum side ropes arranged on the third and fourth rope winding virtual surfaces are attached to the drum side link of the skew compensation device. Since the anti-drum side ropes arranged on the third and fourth rope wrapping virtual surfaces are attached to the anti-drum side link, the container or the suspension tool can be quickly moved in cooperation with the operation of the tilting devices 115 and 116. In addition, it is possible to skew with high accuracy.

It is a perspective view of a transfer crane. It is a perspective view which shows the rope hanging structure which concerns on this invention. It is a top view of the skew control apparatus in this invention. It is a side view of the skew control apparatus in this invention. It is a side view of a single-head cylinder type tilting device. It is a side view of a double-headed cylinder type tilting device. It is a schematic diagram of the rope hanging structure when FIG. 2 is viewed from the direction of arrow A. FIG. 3 is a schematic diagram of a rope hanging structure when FIG. 2 is viewed from an arrow B direction. (A)-(d) is a triangular pattern figure. It is operation | movement explanatory drawing of the skew compensation apparatus in this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a transfer crane (hereinafter referred to as a crane) 1 related to the present invention has a crane body 2 formed in a portal shape, and four sets of front and rear, left and right traveling wheels provided on the legs 3 thereof. 4 advances the container storage zone in the direction of arrow E. The crane 1 also has a trolley 6 that moves forward in the direction of arrow F on the girder 5 above the crane body 2 and a plurality of wire ropes (hereinafter, ropes) drawn from a drum (not shown) on the trolley 6. The hanger 8 is suspended by 7). The crane 1 moves backward in the direction opposite to the arrow E, and the trolley 6 moves backward in the direction opposite to the arrow F. Reference numeral 9 denotes a container.

  As shown in FIG. 2, the trolley 6 includes one drum 16 having eight (2 × 4 sets) ropes, an axis that is parallel to the axis of the first sheave group 10, and the trolley 6. A second sheave group 20 provided at the four corners, a third sheave group 30 provided with an axis parallel to the axis of the drum 16 and on the opposite side of the trolley 6, and an axis parallel to the axis of the drum 16. A fifth sheave group 50 provided in the center of the trolley 6 and a skew control device 150 provided in the center of the trolley 6 are provided.

  On the other hand, the lifting tool 8 includes a first sheave group 10 provided in the center of both ends in the longitudinal direction of the lifting tool 8 in a direction in which the shaft core is orthogonal to the shaft core of the drum 16, and a sheave whose shaft core is the first sheave group 10. A fourth sheave group 40 provided at the four corners of the hanger 8 and orthogonal to the axis is provided.

  The fifth sheave group 50 includes two sheave groups of first and second sheaves 51 and 52 provided on the forward side of the trolley 6 and third and fourth sheaves 53 and 54 provided on the reverse side of the trolley 6. It is configured. The first and second sheaves 51 and 52 and the third and fourth sheaves 53 and 54 are respectively supported by the same or common shaft, but if desired, the first and third sheaves 51 and 53 and The second and fourth sheaves 52 and 54 may be separated from each other in the longitudinal direction of the hanger 8.

  Further, the trolley 6 is provided with a single-head cylinder type tilting device 115 on the drum 16 side and a single-head cylinder type tilting device 116 on the non-drum side. The former slides the arm 123 provided at the connection portion of the first and second ropes 71 and 72 in parallel with the drum 16, and the latter includes the arm 123 provided at the connection portion of the fifth and sixth ropes 75 and 76. The drum 16 is slid in parallel.

  As shown in FIG. 5, the single-head cylinder type tilting devices 115 and 116 are configured to slide the single-head cylinder 122 in the double-headed arrow direction by the electric motor 121. Note that a double-headed cylinder tilting device 111 may be used instead of the single-headed cylinder tilting devices 115 and 116. As shown in FIG. 6, the double-head cylinder type tilting device 111 slides the double-head cylinder 120 in the double-headed arrow direction by an electric motor 119 to perform a skew operation.

  Further, as shown in FIG. 2, the trolley 6 is provided with an independent control type skew compensation device 150 at substantially the center. The skew compensation device 150 is of a parallel link type, and is arranged in parallel with the drum 16 and has two long and short links 151 and 152 that rotate in the same horizontal plane, and these links 151 and 152 are parallel to each other. And an electric cylinder 154 attached to the free end of the long link 151 so as to be parallel to the connection link 153. In addition, the tips of the third and fourth ropes 73 and 74 are attached to the long link 151 on the drum side, and the tips of the seventh and eighth ropes 77 and 78 are attached to the short link 152 on the counter drum side. ing.

  More specifically, as shown in FIG. 3, the long and short links 151 and 152 are pivotally supported by a support shaft 156, respectively. Further, the two links 151 and 152 are connected by a connecting link 153 so as to be parallel to each other. The connection link 153 is pivotally supported by a bolt 158 so as to be parallel to a straight line 157 connecting the two support shafts 156 and 156. The electric cylinder 154 is also pivotally supported on the long link 151 by a bolt 158. The third and fourth ropes 73 and 74 are attached to the long drum link 151 on the drum side by a mounting bracket 159, and the seventh and eighth ropes 77 and 78 are short on the non-drum side by the mounting bracket 159. It is attached to the link 152. The mounting bracket 159 is also attached using bolts 158.

  As shown in FIG. 2, the drum 16 is installed at one end of the trolley 6 corresponding to the front end in the longitudinal direction of the hanger 8. The drum 16 includes a first and a second set of ropes 71 and 72, and a third, a first and a second sheave group that support the hoist 8 via the first and second sheave groups 10 and 20. The fifth and sixth sets of ropes 75 and 76, the fourth, fifth and sixth sheave groups 40, 50 and 60, and the third and fourth A fourth and eighth set of ropes 74 and 78 for supporting the lifting tool 8 via the fourth and fifth sheave groups 30, 40 and 50, and also the fourth, fifth and sixth sheave groups 40 and 50. , 60 and third, fourth, and fifth sheave groups 30, 40, and 50, and third and seventh two sets of ropes 73 and 77 that support the hanging tool 8.

  (1) More specifically, when viewed from the direction of arrow A, the first rope 71 passes through the rear sheave 12 on the front end side of the first sheave group 10 and the front left end sheave 21 of the second sheave group 20. The triangle a is formed on the first rope wrapping virtual surface (not shown) that is connected to the second rope 72 and assumed at the front end in the longitudinal direction of the hanger 8.

  (2) The second rope 72 is connected to the first rope 71 via the front sheave 11 on the front end side of the first sheave group 10 and the front right end sheave 22 of the second sheave group 20. A triangle b is formed on a first rope-wrapping virtual surface (not shown) assumed at the front end in the longitudinal direction.

  (3) The fifth rope 75 passes through the central sheave 31 of the third sheave group 30, the front sheave 13 on the rear end side of the first sheave group 10, and the rear left end sheave 23 of the second sheave group 20. A triangle c is formed on a second rope-wrapping virtual surface (not shown) connected to the sixth rope 76 and assumed at the rear end portion in the longitudinal direction of the hanger 8.

  (4) The sixth rope 76 passes through the central sheave 32 of the third sheave group 30, the rear sheave 14 on the rear end side of the first sheave group 10, and the rear right end sheave 24 of the second sheave group 20. A triangle d is formed on a second rope-wrapping virtual surface (not shown) that is connected to the fifth rope 75 and assumed at the front end in the longitudinal direction of the hanger 8.

  (5) On the other hand, when viewed from the direction of arrow B, the fourth rope 74 is skew compensated via the right end sheave 42 on the front end side of the fourth sheave group 40 and the second sheave 52 of the fifth sheave group 50. A triangle f is formed on a third rope-wrapping virtual surface (not shown) that is connected to the long cross beam 151 of the device 150 and is assumed at the front end portion of the hanger 8 in the transverse direction.

  (6) The eighth rope 78 is skew compensated via the left end sheave 34 of the third sheave group 30, the left end sheave 41 on the front end side of the fourth sheave group 40, and the first sheave 51 of the fifth sheave group 50. A triangle e is formed on a third rope-wrapping virtual surface (not shown) that is connected to the 150 short cross beams 152 and is assumed at the front end of the hanger 8 in the lateral direction.

  (7) The third rope 73 is connected to the long cross beam 151 of the skew compensation device 150 via the right end sheave 44 on the rear end side of the fourth sheave group 40 and the fourth sheave 54 of the fifth sheave group 50. Then, a triangle h is formed on a fourth rope-wrapping virtual surface (not shown) assumed at the rear end of the hanger 8 in the transverse direction.

  (8) The seventh rope 77 is skew compensated via the right end sheave 33 of the third sheave group 30, the left end sheave 43 on the rear end side of the fourth sheave group 40, and the third sheave 53 of the fifth sheave group 50. A triangle g is formed on a fourth rope-wrapping virtual surface (not shown) that is connected to the short transverse beam 152 of the device 150 and is assumed at the rear end of the hanger 8 in the transverse direction.

  (1) The triangles a to h will be described in more detail. As shown in FIG. 7, the triangle a has a hypotenuse x1 supported by the sheave 12 on the hanger 8 side and a sheave 21 on the trolley 6 side, a base y1 supported on the sheave 21 on the trolley 6 side, and a hanger 8 side. It is formed by the vertical side z1 supported by the sheave 12. p1 represents an apparent intersection of the base y1 and the vertical side z1.

  (2) The triangle b is supported by the slant side x2 supported by the sheave 11 on the hanging tool 8 side and the sheave 22 on the trolley 6 side, the bottom side y2 supported by the sheave 21 on the trolley 6 side, and the sheave 12 on the hanging tool 8 side. Formed by the vertical side z2. p2 represents an apparent intersection of the base y2 and the vertical side z2.

  (3) The triangle c is supported by the oblique side x5 supported by the sheave 13 on the suspension 8 side and the sheave 23 on the trolley 6 side, the bottom y5 supported by the sheave 23 on the trolley 6 side, and the sheave 13 on the suspension 8 side. The vertical side z5 is formed. p5 indicates an apparent intersection of the base y5 and the vertical side z5.

  (4) The triangle d is supported by the sheave 14 on the suspension 8 side and the oblique side x6 supported by the sheave 24 on the trolley 6 side, the upper side y6 supported by the sheave 24 on the trolley 6 side, and the sheave 14 on the suspension 8 side. The vertical side z6 is formed. p6 indicates an apparent intersection of the base y6 and the vertical side z6.

  (5) Further, as shown in FIG. 8, the triangle e has an oblique side x8 supported by the sheave 41 on the suspension 8 side and a sheave 51 on the trolley 6 side, an upper side y8 supported by the sheave 51 on the trolley 6 side, It is formed by the vertical side z8 supported by the sheave 41 on the hanging tool 8 side. p8 indicates an apparent intersection of the base y8 and the vertical side z8.

  (6) The triangle f is supported by the sheave 42 on the suspension 8 side and the oblique side x4 supported by the sheave 52 on the trolley 6 side, the upper side y4 supported by the sheave 52 on the trolley 6 side, and the sheave 42 on the suspension 8 side. Formed by the vertical side z4. p4 indicates an apparent intersection of the base y4 and the vertical side z4.

  (7) The triangle g is supported by the sheave 43 on the suspension 8 side and the oblique side x7 supported by the sheave 53 on the trolley 6 side, the upper side y7 supported by the sheave 53 on the trolley 6 side, and the sheave 43 on the suspension 8 side. Formed by the vertical side z7. p7 indicates an apparent intersection of the base y7 and the vertical side z7.

  (8) The triangle h is supported by the sheave 44 on the suspension 8 side and the oblique side x3 supported by the sheave 54 on the trolley 6 side, the upper side y3 supported by the sheave 54 on the trolley 6 side, and the sheave 44 on the suspension 8 side. Formed by the vertical side z3. p3 indicates an apparent intersection of the base y3 and the vertical side z3.

Moreover, since the triangles a to h are formed so as to satisfy the following expressions (1) to (3), they are congruent with each other. In addition, the bases y1 to y8 all face the trolley 6 side.
x1 = x2 = x3 = x4 = x5 = x6 = x7 = x8 (1)
y1 = y2 = y3 = y4 = y5 = y6 = y7 = y8 (2)
z1 = z 2 = z3 = z4 = z5 = z6 = z7 = z8 (3)

  9A is a diagram in which triangles a and c are patterned, FIG. 9B is a diagram in which triangles b and d are patterned, FIG. 9C is a diagram in which triangles e and g are patterned, and FIG. (D) is the figure which patterned the triangles f and h.

  As described above, the present invention is formed by eight (2 × 4 sets) ropes 71 to 78 arranged on four rope-wrapping virtual surfaces (not shown) assumed around the hanger 8. Since all the eight triangles a to h have a truss structure, it is possible to suppress the shaking of the container during traveling and traversing. In particular, at the center of the front end of the hanging tool 8 in the longitudinal direction, the two ropes 71 and 72 are hung so as to sandwich the sheaves 11 and 12 of the same axis from both sides, and at the center of the rear end of the hanging tool 8 in the longitudinal direction. Since the two ropes 75 and 76 are hung so as to sandwich the sheaves 13 and 14 having the same axis from both sides, the restraining force for suppressing the swing of the hanger 8 in the transverse direction (transverse direction) is increased.

  Next, the operation of the skew compensation device 150 will be described. As shown in FIG. 10, when the rod 154a of the electric cylinder 154 of the skew compensation device 150 is extended in the direction of the arrow R, the long and short links 151 and 152 rotate around the support shaft 156 like a two-dot chain line. .

  For this reason, the fourth rope 74 and the seventh rope 77 are drawn in the direction of the arrow s, the third rope 73 and the eighth rope 78 are drawn out in the direction of the arrow t, and the hoist 8 is clockwise around the axis O. Skew in the direction of the arrow.

  When the rod 154a of the electric cylinder 154 of the skew compensation device 150 is contracted in the direction opposite to the arrow R, the hanger 8 skews counterclockwise about the axis O.

  By the way, it is desirable that the sheaves located at both ends of the hypotenuses x1 to x8 of all the triangles a to h have the same sheave diameter on the trolley 6 side and the sheave diameter on the hanging tool 8 side. Moreover, it is desirable that the diameters of the sheaves 21 to 24 and 51 to 54 on the trolley 6 side are smaller than or equal to the diameters of the sheaves 11 to 14 and 41 to 44 on the hanging tool 8 side.

  The sheaves 21 to 24 and 51 to 54 on the trolley side are equalizer sheaves, and there is almost no passage of the rope when the lifting device 8 or the container 9 is raised or lowered, so the diameter of the sheaves 21 to 24 and 51 to 54 on the trolley 6 side Even if the diameter is smaller than the diameter of the sheaves 11 to 14 and 41 to 44 on the hanging tool 8 side, the rope life and the like are not adversely affected. In addition, the weight can be reduced.

  In addition, since the suspension tool 8 can be shifted in the lateral direction by the force of the differential tension of the ropes 71 and 72 and the force of the differential tension of the ropes 75 and 76, the downsizing of the single-head cylinder type tilting devices 115 and 116 is reduced. Is possible.

  In the above description, the case where the drum 16 is provided so as to be offset toward one end of the trolley 6 has been described, but the drum 16 may be installed at the center of the trolley 6. In this case, four sheaves facing the sheaves 31 to 34 provided on the non-drum side as the third sheave group 30 are additionally provided on the front side of the drum 16 to provide first to fourth ropes 71 to 74. To support each.

8 Suspension 16 Drum 71, 72 (75, 76), 74, 78 (73, 77) One set of two ropes x1, x2 (x5, x6), x4, x8 (x3, x7) hypotenuse 150 parallel link type Skew Compensator 151 Drum Side Link 152 Non-Drum Side Link

Claims (4)

And Tsu支the hanger by a plurality of rope drawn out from one of the drum on the trolley, and, in a crane provided with a skew compensation device on the trolley, the assumed at both ends around the longitudinal direction of the hanging member 1, in the second rope winding imaginary plane, the two pair of rope drawn from the drum, to face the direction in which the oblique side is away from each other to form a triangle between said hanging member and said trolley pass over a further, in the two pair of rope front and rear ends the longitudinal center of said hanging member to sandwich the sheave of the same shaft from both sides, while at both ends around the transverse direction of the hanging member assumed the third and fourth rope winding imaginary plane, the two pair of rope drawn from the drum, each oblique orientation to each other to form a triangle between said hanging member and said trolley Pass over the Migihitsuji and rope hanging structure of the crane, characterized in that the triangle is formed by the respective one of the ropes together are all congruent. A drum provided at one end of the trolley corresponding to the longitudinal direction of the front end of the hanger, at both ends around the longitudinal center of and the hanging member in the direction in which the axis is perpendicular to the axis of the drum a first sheave set provided, and a second sheave group axis is provided at the four corners of the axis and parallel and said trolley of said first sheave set of sheave axis is and parallel to the axis of the drum a third sheave group provided on the counter-drum side of the trolley, and a fourth sheave group axis is provided at the four corners of the orthogonal and said hanging member and the axis of the first sheave group sheave axis is the and a fifth sheave group provided at the center of the parallel and the trolley and the axis of the drum, said from the drum first, first to Tsu支the hanger via a second sheave set, second a pair of first rope winding provisionally assuming the longitudinal direction of the front end portion of the hanger rope of The triangles are formed on the surface, said from the drum third, the first, fifth, longitudinal sixth the crane with a set of rope that Tsu支the hanger via a second sheave group a triangle formed in the second rope winding virtual surface that assumes the rear end portion, said from the drum fourth, fifth sheave group and the third, fourth, the hanging member through a fifth sheave group the first to Tsu支4, 8, and third, forming a triangle in the third, winding virtual plane fourth rope that assumes both ends before and after the seventh pair of transverse direction of the hangers in the rope The crane rope hanging structure according to claim 1, wherein all the triangles are congruent. A drum provided in place of the drum which is provided at one end of the trolley in the center of the trolley corresponding to the longitudinal direction of the front end of the hanger, and in the direction axis is perpendicular to the axis of the drum the a first sheave group provided at both ends a central front and rear hanger in the longitudinal direction and the second sheave group axis is provided at the four corners of the parallel and the trolley and the axis of the first sheave group sheave, the third sheave and the group, the four corners of the axis is orthogonal and said hanging member and the axis of the first sheave group sheave provided at both side ends of the axis is the axis parallel to a and the trolley of said drum a fourth sheave group provided, and a fifth sheave group axis is provided at the center of the parallel and the trolley and the axis of said drum, said from the drum third, first, second sheave group first to Tsu支the hanger via a second and 5, each pair of the sixth b The assumed at both ends around the longitudinal direction of the hanging member in STEP 1, the triangle formed in the second rope winding virtual surface, said from the drum third, fourth, through the fifth sheave group the to Tsu支the hanger Te 4, 8, and third, seventh third assumed at both ends around the transverse direction of the hanging member in each pair of rope, the fourth rope winding virtual 2. The crane rope hanging structure according to claim 1, wherein a triangle is formed on the surface and all the triangles are congruent. Rope crane according to any one of claims 1 to 3, characterized in that to position the bottom of all of the triangle formed by multiplying passing rope between said hanging member and said trolley in said trolley side Hanging structure.

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