JP5394793B2 - Crane rope hanging structure - Google Patents

Description

  The present invention relates to a rope hanging structure for a crane that handles containers for marine transportation, and more particularly to a rope hanging structure for a crane that realizes a shift function in the traveling direction of the crane.

  As a rope hanging structure of a crane that handles containers for marine transportation, conventionally, a wire-leaving structure of a crane in which ropes are arranged in a V shape on each of four virtual wrapping surfaces constituting the side of an inverted pyramid, or a rectangular parallelepiped There is known a cargo handling lifting / lowering device in which ropes are arranged in an X shape on four rope-wrapping virtual surfaces constituting the side surface (see, for example, Patent Document 1 or 2).

  Patent Document 1 starts with the description of the wire-leaving structure, and does not describe any means for realizing the shift function of the crane. On the other hand, although Patent Document 2 describes means for realizing a shift function of a crane, a plurality of actuators must be operated in conjunction with each other using hydraulic pressure or the like, and the operation is not performed precisely. In addition, there is a disadvantage that unbalanced rope tension or container shake occurs.

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

  An object of the present invention is to provide a rope hanging structure for a crane that can operate a spreader (hanging tool) in the traveling direction quickly and with high accuracy.

(1) rope hanging structure of the crane of the invention comprises a trolley with one drum and a plurality of sheaves, and a hanging member having a multiple sheave, said a plurality of rope drawn out from the drum In a crane that suspends the suspender, the rope wrapping virtual surface assumed at both ends in the longitudinal direction of the suspender has a pair of ropes drawn from the drum, and these ropes are connected to the suspender. A sheave that forms a triangle between the trolleys and faces in the direction in which the hypotenuses are separated from each other , and is located at the center of the suspender lateral direction in the virtual wrapping surface of the rope that is assumed at both ends in the longitudinal direction of the suspender. pass over so as to sandwich from both sides, while in a rope winding virtual plane assumed at both ends of the transverse direction of the sling, two drawn out from the drum A set of ropes, all triangles spanned as its hypotenuse face each other to form a respective triangle between these rope sling and trolley in such a manner that the congruent, further transversely of the trolley A pair of rope operation plates are rotatably provided at a predetermined interval, and rope attachment attachment holes are provided on both sides of a support shaft that pivotally supports the rope operation plate, and each rope attachment attachment hole has a hypotenuse. Two ropes arranged on the imaginary surface on the side of the suspension side that are hung so as to face each other are attached via rope attachments, and the rope is attached by a cylinder attached to the side opposite to the drum of the rope operation plate. The operation plates are rotated in opposite directions to each other.

(2) rope hanging structure of the crane of the invention comprises a trolley with one drum and a plurality of sheaves, and a hanging member having a multiple sheave, said a plurality of rope drawn out from the drum In a crane that suspends the suspender, the rope wrapping virtual surface assumed at both ends in the longitudinal direction of the suspender has a pair of ropes drawn from the drum, and these ropes are connected to the suspender. A sheave that forms a triangle between the trolleys and faces in the direction in which the hypotenuses are separated from each other , and is located at the center of the suspender lateral direction in the virtual wrapping surface of the rope that is assumed at both ends in the longitudinal direction of the suspender. pass over so as to sandwich from both sides, while in a rope winding virtual plane assumed at both ends of the transverse direction of the sling, two drawn out from the drum A set of ropes, all triangles spanned as its hypotenuse face each other to form a respective triangle between these rope sling and trolley in such a manner that the congruent, further transversely of the trolley A pair of double-headed cylinders are provided at a predetermined interval, and one of a set of two ropes arranged on a virtual surface on the lateral side of the suspension that spans the drum side of the double-headed cylinder so that the hypotenuses face each other. One is mounted, and the other is mounted on the opposite drum side of the double-headed cylinder .

(3) In the rope hanging structure of the crane according to the present invention, in the above (1) and (2), the drum provided at one end portion in the longitudinal direction of the trolley, the shaft core is in a direction perpendicular to the shaft core of the drum, and the lifting tool The first sheave group provided at the center part in the transverse direction of the suspension at both ends in the longitudinal direction of the first sheave group, the shaft core is parallel to the sheave shaft core of the first sheave group and the second sheave group provided at the four corners of the trolley, the shaft core is A third sheave group that is parallel to the axis of the drum and provided on the side opposite to the drum of the trolley, a fourth sheave group that has an axis that is perpendicular to the axis of the sheave of the first sheave group and that is provided at the four corners of the lifting device. A fifth sheave group whose core is parallel to the shaft axis of the drum and provided at the center of the trolley, and a sixth sheave group whose sheave surface is parallel or substantially parallel to the top surface of the trolley and associated with the fifth sheave group, From the drum through the first and second sheave groups First and second sets of ropes to be supported, from the drums, fifth and sixth sets of ropes to be suspended from the drums via third, first and second sheave groups, from the drums 4th and 8th set of ropes for supporting the lifting device via the 4th, 5th and 6th sheave groups and the 3rd, 4th and 5th sheave groups, and 3rd and 7th 1 A pair of ropes form a triangle between the trolley and the lifting tool, and all the triangles are congruent.

(4) In the rope hanging structure of the crane according to the present invention, in the above (1) and (2), the drum provided at the center in the longitudinal direction of the trolley, the shaft core is in a direction orthogonal to the drum core, and the lifting tool The first sheave group provided at the center part in the transverse direction of the suspension at both ends in the longitudinal direction of the first sheave group, the shaft core is parallel to the sheave shaft core of the first sheave group and the second sheave group provided at the four corners of the trolley, the shaft core is A third sheave group that is parallel to the shaft axis of the drum and provided at both ends of the trolley, a fourth sheave group that is perpendicular to the shaft core of the sheave of the first sheave group and that is provided at the four corners of the lifting device, and the shaft core A fifth sheave group that is parallel to the axis of the drum and provided at the center of the trolley, and a sixth sheave group that is parallel or substantially parallel to the top surface of the trolley and that is associated with the fifth sheave group,
A first and second set of ropes and a fifth and sixth set of ropes for suspending a hanging tool from the drum via the third, first and second sheave groups, and a third from the drum. 4th, 5th and 6th sheave groups and 4th and 8th set of ropes and 3rd and 7th 1 to suspend the suspension tool via the 3rd, 4th and 5th sheave groups. A pair of ropes form a triangle between the trolley and the hanging tool and all the triangles are congruent.

(5) The rope hanging structure of the crane according to the present invention is the trolley having the bottoms of all triangles formed by the rope spanned between the trolley and the suspension tool in any one of the above (1) to (4). It is characterized by being positioned on the side.

  The crane rope hanging structure of the present invention includes a trolley having one drum and a plurality of sheaves, and a suspension device having a plurality of sheaves, and the suspension device is suspended by a plurality of ropes drawn from the drum. In the crane as described above, in the rope wrapping virtual surface assumed at both ends in the longitudinal direction of the suspension tool, two ropes drawn out from the drum are connected between the suspension tool and the trolley. A pair of ropes drawn out from the drum is formed on a virtual rope-wrapping virtual surface assumed at both ends in the transverse direction of the suspension while forming a triangle and the oblique sides thereof facing away from each other. These ropes form a triangle between the hanger and the trolley, and the hypotenuses face each other. Since the squares are congruent, all the 8 ropes (2 x 4 sets) included in the virtual surface around the four ropes assumed around the suspension are trussed and held by the suspension and the suspension. The restraining force that suppresses the traveling of the suspended load and the shaking in the transverse direction has been improved.

  In addition, the present invention supports a pair of rope operation plates pivotably supported on the trolley, and the rope-wrapping virtual surface assumed at the front end portion of each rope operation plate at the end portion in the transverse direction of the suspension tool. A pair of two ropes arranged on each side is attached and each rope operation plate is rotated in the opposite direction by a cylinder type shift control device provided at the rear end of the rope operation plate. It has become possible to shift the running direction (longitudinal direction) of the tool quickly and with high accuracy.

  Further, instead of the method of rotating the rope operation plate in the opposite directions by the cylinder type shift control device, the trolley is provided with a pair of double-headed cylinder type tilting devices, and each double-headed cylinder type tilting device has the above-mentioned The same effect can be obtained even if a pair of two ropes arranged on the virtual surface wrapped around the rope assumed at the end in the transverse direction of the hanger is attached.

It is a perspective view of a transfer crane. It is a perspective view showing a 1st embodiment of a rope hanging structure concerning the present invention. It is a side view of a single-head cylinder type tilting device. It is the top view and operation | movement explanatory drawing of a shift control apparatus. It is detail drawing of a shift control apparatus. It is a schematic diagram of the rope hanging structure seen from the arrow A direction of FIG. It is a schematic diagram of the rope hanging structure seen from the arrow B direction of FIG. (A)-(d) It is a pattern figure of a triangle. It is a perspective view which shows 2nd Embodiment of the rope hanging structure which concerns on this invention. It is the top view and operation | movement explanatory drawing of a shift control apparatus. It is detail drawing of a shift control apparatus. It is a perspective view which shows 3rd Embodiment of the rope hanging structure which concerns on this invention. It is a side view of a double-headed cylinder type tilting device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(1) First Embodiment First, the first invention will be described. As shown in FIG. 1, the transfer crane 1 has a crane main body 2 formed in a gate shape, and advances in the container storage zone in the direction of arrow E by four sets of front and rear rubber tires 4 provided on the legs 3. . Moreover, the transfer crane 1 includes a trolley 6 that moves forward in the direction of arrow F on the girder 5 on the upper part of the crane body, and a plurality of wire ropes (hereinafter referred to as drums) drawn from a drum (not shown) on the trolley 6. The hanger 8 is hung by 7).

  The transfer crane 1 moves backward in the direction opposite to the arrow E, while the trolley 6 moves backward in the direction opposite to the arrow F. Reference numeral 9 denotes a container for sea transportation.

  As shown in FIG. 2, the trolley (not shown) has one drum 16 having eight (2 × 4 sets) ropes, and the shaft core is parallel to the shaft core of the first sheave group 10 described later. And the second sheave group 20 provided at the four corners of the trolley 6, the third sheave group 30 provided with the shaft core parallel to the shaft core of the drum 16 and on the opposite side of the trolley 6, and the shaft core of the drum 16. A fifth sheave group 50 that is parallel to the shaft center and provided at the center of the trolley 6 and a sixth sheave group 60 that has a sheave surface parallel to or substantially parallel to the top surface of the trolley and associated with the fifth sheave group. .

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

  The fifth sheave group 50 is composed of two groups of first and second sheaves 51 and 52 and third and fourth sheaves 53 and 54. The first and second sheaves 51 and 52 are The third and fourth sheaves 53 and 54 are provided on the backward side of the trolley. The first and second sheaves 51 and 52 and the third and fourth sheaves 53 and 54 are supported by the same shaft, but the first and second sheaves 51 and 52 can be hung if desired. 8 may be separated in the longitudinal direction (arrow E direction). At that time, the third and fourth sheaves 53 and 54 are separated in the longitudinal direction of the hanger 8 in the same manner as the first and second sheaves 51 and 52.

  As shown in FIG. 2, the trolley (not shown) 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 opposite drum side. The former slides the arm 123 provided at the connecting portion of the first and second ropes 71 and 72 in parallel with the drum 16, and the latter provides the arm provided at the connecting portion of the fifth and sixth ropes 75 and 76. 123 is slid parallel to the drum 16. As shown in FIG. 3, the tilting devices 115 and 116 are configured to slide the single-headed cylinder 122 back and forth by an electric motor 121 as indicated by arrows.

  Further, as shown in FIG. 2, the trolley includes an independent control type shift control device 130 on the side opposite to the drum. The shift control device 130 includes a pair of rope operation plates 124 and 125 provided at a predetermined interval in the transverse direction F of the trolley, and two support shafts that pivotally support the rope operation plates 124 and 125. 126, 126, a cylinder 131 attached to the rear end portion of the rope operation plate 124, and a cylinder 132 attached to the rear end portion of the rope operation plate 125.

  The rope operation plates 124 and 125 are directed toward the drum 16 on the rope mounting portion side. The cylinders 131 and 132 are provided in parallel to the drum 16 and are installed with their backs facing each other. Further, the cylinders 131 and 132 are controlled by a control device (not shown) so that the left and right piston rods 133 and 134 (see FIG. 4) are synchronized. The piston rod 133 is attached to the rear end portion of the rope operation plate 124 by the support shaft 135, and the piston rod 134 is also attached to the rear end portion of the rope operation plate 125 by the support shaft 135.

  More specifically, as shown in FIG. 4, the rope operation plate 124 includes rope attachment attachment holes 136 and 137 on both sides of the support shaft 126, and the rope attachment attachment hole 136 on the left has a rope attachment. A rope 78 is attached via a tool (not shown), and a rope 74 is attached to the right rope attachment fitting hole 137 via a rope attachment (not shown). The rope operation plate 125 includes rope attachment mounting holes 138 and 139 on both sides of the support shaft 126. The rope attachment plate 138 has a rope attachment (not shown) in the left rope attachment attachment hole 138. 73 is attached, and a rope 77 is attached to the right rope attachment attachment hole 139 via a rope attachment (not shown).

  Further, as shown in FIG. 5, the shift control device 130 includes a support shaft 126 that supports the rope operation plate 124 and rope attachment mounting holes 136 and 137 provided on both sides thereof, which are positioned in a straight line. A support shaft 126 that pivotally supports the rope operation plate 125 and rope attachment mounting holes 138 and 139 provided on both sides thereof are positioned on a straight line. In addition, the pair of rope operation plates 124, 125, the pair of support shafts 126, 126 that pivotally support the rope operation plates 124, 125, and the pair of fluid cylinders 131, 132 form a parallelogram. It has become.

  As the shape of the rope operation plates 124 and 125, for example, a shape such as a home base or an isosceles triangle is preferable.

  As shown in FIG. 2, the drum 16 is installed at one side end on the trolley corresponding to the front end in the longitudinal direction of the hanger 8. Further, the drum 16 includes a first and a second set of ropes 71 and 72, a third, a first and a second sheave that support the suspension 8 via the first and second sheave groups 10 and 20. A fifth and sixth set of ropes 75 and 76, a fourth, a fifth and a sixth sheave group 40, 50 and 60 and a third, which suspend the hanger 8 via the groups 30, 10 and 20; 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 the fourth, fifth and sixth sheave groups 40, 50, 60 and third, fourth, and fifth sheave groups 30, 40, 50, and third and seventh two sets of ropes 73, 77 that support the hanging tool 8 are provided.

  More specifically, when viewed from the direction of arrow A, the first rope 71 will be described later via 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. Connected to the second rope 72, a triangle a is formed between the hanger 8 and a trolley (not shown).

  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 between them.

  The fifth rope 75 is described later via the sheave 31 at the center of the third sheave group 30, the front sheave 13 at the rear end side of the first sheave group 10, and the rear left end sheave 23 of the second sheave group 20. 6 is connected to the rope 76 and forms a triangle c between the hanger 8 and the trolley.

  The sixth rope 76 passes through the sheave 32 at the center 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. And a triangle d is formed between the hanger 8 and the trolley.

  On the other hand, when viewed from the direction of the arrow B, the fourth rope 74 has the right sheave 42 on the front end side of the fourth sheave group 40, the second sheave 52 of the fifth sheave group 50, and the sixth sheave group 60. It is connected to the right end (right end as viewed from the direction of arrow A) of the rope operation plate 124 via the one sheave 61, and a triangle f is formed between the hanger 8 and the trolley.

  The eighth rope 78 passes through 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, and the left end of the rope operation plate 124. And a triangle e is formed between the hanger 8 and the trolley.

  The third rope 73 passes through the right sheave 44 on the rear end side of the fourth sheave group 40, the fourth sheave 54 of the fifth sheave group 50, and the second sheave 62 of the sixth sheave group 60. 125 is connected to the left end (left end when viewed from the direction of arrow A), and a triangle h is formed between the hanger 8 and the trolley.

  The seventh rope 77 is connected to the rope operation plate 125 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. Connected to the right end, a triangle g is formed between the hanger 8 and the trolley.

  Here, the triangles a to h will be described in more detail.

  As shown in FIG. 6, the triangle a has an oblique side x <b> 1 supported by the sheave 12 on the suspension 8 side and the sheave 21 on the trolley side, a base y <b> 1 supported on the sheave 21 on the trolley side, and a sheave 12 on the suspension 8 side. It is formed by the vertical side z1 supported by. p1 represents an apparent intersection of the base y1 and the vertical side z1.

  The triangle b is a hypotenuse x2 supported by the sheave 11 on the suspension 8 side and the sheave 22 on the trolley side, a base y2 supported on the sheave 21 on the trolley side, and a vertical side z2 supported on the sheave 12 on the suspension 8 side. It is formed by. p2 represents an apparent intersection of the base y2 and the vertical side z2.

  The triangle c includes an oblique side x5 supported by the sheave 13 on the suspension 8 side and the sheave 23 on the trolley side, a base y5 supported on the sheave 23 on the trolley side, and a vertical side z5 supported on the sheave 13 on the suspension 8 side. It is formed by. p5 represents an apparent intersection of the base y5 and the vertical side z5.

  The triangle d has an oblique side x6 supported by the sheave 14 on the suspension 8 side and the sheave 24 on the trolley side, an upper side y6 supported by the sheave 24 on the trolley side, and a vertical side z6 supported by the sheave 14 on the suspension 8 side. It is formed by. p6 represents an apparent intersection of the base y6 and the vertical side z6.

  Further, as shown in FIG. 7, the triangle e has an oblique side x8 supported by the sheave 41 on the suspension 8 side and the sheave 51 on the trolley side, an upper side y8 supported by the sheave 51 on the trolley side, and the suspension 8 side. It is formed by a vertical side z8 supported by the sheave 41. p8 represents an apparent intersection of the base y8 and the vertical side z8.

  The triangle f includes an oblique side x4 supported by the sheave 42 on the suspension 8 side and the sheave 52 on the trolley side, an upper side y4 supported by the sheave 52 on the trolley side, and a vertical side z4 supported by the sheave 42 on the suspension 8 side. It is formed by. p4 indicates an apparent intersection of the base y4 and the vertical side z4.

  The triangle g includes an oblique side x7 supported by the sheave 43 on the suspension 8 side and the sheave 53 on the trolley side, an upper side y7 supported on the sheave 53 on the trolley side, and a vertical side z7 supported on the sheave 43 on the suspension 8 side. It is formed by. p7 represents an apparent intersection of the base y7 and the vertical side z7.

  The triangle h is an oblique side x3 supported by the sheave 44 on the suspension 8 side and the sheave 54 on the trolley side, an upper side y3 supported by the sheave 54 on the trolley side, and a vertical side z3 supported by the sheave 44 on the suspension 8 side. It is formed by. p3 represents 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)

  8A is a diagram in which triangles a and c are patterned, FIG. 8B is a diagram in which triangles b and d are patterned, FIG. 8C 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 included in the four rope-wrapping virtual surfaces (not shown) assumed around the hanger 8. Since all of the eight triangles a to h have a truss structure, there is a restraining force that suppresses the shift and skew of the hanger 8 or a suspended load held by the hanger 8 (hereinafter simply referred to as the hanger 8). It will be even better than before. In particular, at the center of the longitudinal end portion of the hanger 8, two ropes 71 and 72 are hung so as to sandwich the sheaves 11 and 12 of the same axis from both sides, and further, the two ropes 75 and 76 are connected to the same axis. Since the sheaves 13 and 14 are hung from both sides, the restraining force for suppressing the swing of the hanger 8 in the transverse direction (transverse direction) is increased.

  At this time, as shown in FIG. 4, when the cylinder rod 133 of the cylinder 131 is pulled back in the direction of the arrow R, the rope operation plate 124 is rotated in the clockwise direction, and the eighth rope 78 is pulled in the direction of the arrow t. The fourth rope 74 is loosened in the direction of the arrow s. At the same time, when the cylinder rod 134 of the cylinder 132 is pulled back in the direction of the arrow L, the rope operation plate 125 rotates counterclockwise, the seventh rope 77 is pulled in the direction of the arrow t, and the third rope 73 is moved in the direction of the arrow. Since it loosens in the direction of s, the hanger 8 shifts in the direction of arrow E.

  On the other hand, when the cylinder rod 133 of the cylinder 131 is pushed out in the direction of the arrow L ′, the rope operation plate 124 rotates counterclockwise, the fourth rope 74 is pulled in the direction of the arrow t ′, and the eighth rope 78 is Loosen in the direction of arrow s'. At the same time, when the cylinder rod 134 of the cylinder 132 is pushed out in the direction of the arrow R ′, the rope operation plate 125 is rotated in the clockwise direction, the third rope 73 is pulled in the direction of the arrow t ′, and the seventh rope 77 is Since it is loosened in the direction of the arrow s ′, the hanger 8 is shifted in the opposite direction to the arrow E.

  In addition, when the swing of the hanger 8 in the longitudinal direction (traveling method) occurs, the shift control device 130 brakes the change in the rope length, so that the wobble of the hanger 8 in the longitudinal direction can be suppressed.

  At this time, the sheaves located at both ends of the hypotenuses x1 to x8 of all the triangles a to h have the same diameter on the trolley side and the diameter on the suspension side, and the sheaves 21 to 24 and 51 to 54 on the trolley side. It is desirable that the diameter of each of the sheaves 11 to 14 and 41 to 44 on the lifting tool side be smaller or the same.

  The sheaves 21 to 24 and 51 to 54 on the trolley side are equalizer sheaves, and the sheaves 21 to 24 and 51 on the trolley side have almost no passage of the rope at the time of lifting or lowering the suspended load or the suspended load held by the hanging tool. Even if the diameter of .about.54 is made smaller than the diameter of the sheaves 11-14 and 41.about.44 on the suspension 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 FIG. 2, single-head cylinder tilting devices 115 a and 116 a are provided inside the rope operation plates 124 and 125, but single-head cylinder tilting devices are provided outside the rope operation plates 124 and 125. There is no problem even if 115a and 116a are installed.

  In the above description, the case where the drum 16 is provided so as to be offset toward one end of the trolley has been described. However, the drum 16 may be installed at the center of the trolley. In this case, four sheaves whose support shafts are parallel to the axis of the drum 16 are added to the front side of the drum 16 as the third sheave group 30 so as to face the sheaves 31 to 34 provided on the side opposite to the drum. Provided to support the first to fourth ropes 71 to 74, respectively.

(2) Second Embodiment Next, the second invention will be described. As shown in FIG. 9, the present invention includes a single control type shift control device 140. The shift control device 140 includes a pair of rope operation plates 124 and 125 provided at a predetermined interval in the transverse direction F of the trolley, and two support shafts that pivotally support the rope operation plates 124 and 125. 126, 126 and a cylinder 141 bridged between the rope operation plates 124, 125.

  More specifically, as shown in FIG. 10, the piston rod 142 of the cylinder 141 is attached to the rear end portion of the rope operation plate 124 by the support shaft 135, and the connecting member 144 attached to the cylinder 143 of the cylinder 141 is The support shaft 135 is attached to the rear end portion of the rope operation plate 125.

  As shown in FIG. 10, the rope operation plate 124 includes rope attachment attachment holes 136 and 137 on both sides of the support shaft 126, and the left rope attachment attachment hole 136 has a rope attachment (not shown). ) And a rope 74 is attached to the right rope attachment attachment hole 137 via a rope attachment (not shown). The rope operation plate 125 includes rope attachment mounting holes 138 and 139 on both sides of the support shaft 126. The rope attachment plate 138 has a rope attachment (not shown) in the left rope attachment attachment hole 138. 73 is attached, and a rope 77 is attached to the right rope attachment attachment hole 139 via a rope attachment (not shown).

  Further, as shown in FIG. 11, the shift control device 140 includes a support shaft 126 that pivotally supports the rope operation plate 124 and rope attachment fitting holes 136 and 137 provided on both sides thereof, which are positioned in a straight line. A support shaft 126 that pivotally supports the rope operation plate 125 and rope attachment mounting holes 138 and 139 provided on both sides thereof are positioned on a straight line. In addition, the pair of rope operation plates 124, 125, the pair of support shafts 126, 126 that pivotally support the rope operation plates 124, 125, and the cylinder 141 that includes the connecting member 144 form a parallelogram. It is like that.

  Other than this, there is no difference from the first invention, so the same reference numerals are given to the same parts, and detailed description is omitted. In the case of the present invention, it is necessary to synchronize the rotation angles of the left and right rope operation plates 124 and 125.

  At this time, as shown in FIG. 10, when the length of the shift control device 140 is shortened by adjusting the cylinder 141, the rope operation plate 124 rotates clockwise and the eighth rope 78 moves in the direction of the arrow t. As a result, the fourth rope 74 is loosened in the direction of the arrow s. At the same time, the rope operation plate 125 rotates counterclockwise, the seventh rope 77 is pulled in the direction of the arrow t, and the third rope 73 is loosened in the direction of the arrow s. Shift to.

  On the other hand, when the cylinder 141 is adjusted to extend the length of the shift control device 140, the rope operation plate 124 rotates counterclockwise, the fourth rope 74 is pulled in the direction of the arrow t ′, and the eighth rope 78 is loosened in the direction of the arrow s ′. At the same time, the rope operation plate 125 is rotated in the clockwise direction, the third rope 73 is pulled in the direction of the arrow t ′, and the seventh rope 77 is loosened in the direction of the arrow s ′. On the other hand, it shifts in the opposite direction.

  When skewing, the link length, that is, the length of the shift control device 140 is fixed, so that both rope operation plates 124 and 125 have the same inclination. For this reason, the inclination is naturally determined when skew occurs.

  Here, when the length of the shift control device 140 is changed by adjusting the cylinder 141, a skew angle and a shift angle are generated in the rope operation plates 124 and 125, and the shift is performed. That is, a shift is generated by the change in the cylinder length.

  Therefore, as in the first aspect, the shift operation can be performed without calculating the individual cylinder length and adjusting the cylinder length. At this time, since the skew is fixed by the single-head cylinder type tilting devices 115 and 116 at both ends in the longitudinal direction of the hanger 8, the skew is shifted by the shift amount of the shift control device 140.

(3) Third Embodiment Next, the third invention will be described. In the present invention, as shown in FIG. 12, the sixth sheave group 60 is constituted by sheaves 61, 62, 63, 64, while four double-headed cylinder tilting devices 111, 112, 113, 114 are applied. There is a feature in doing.

The sheaves 61 and 62 are provided on the drum 16 side, and the sheaves 63 and 64 are provided on the counter drum 16 side. Further, the tilting device 111 is provided on the front end side in the longitudinal direction of the hanging tool 8, and the tilting device 112 is provided on the rear end side in the longitudinal direction of the hanging tool 8. On the other hand, the tilting device 113 is provided to cross the drum 16 on the sheaves 51 and 52 side, and the tilting device 114 is provided to cross the drum 16 on the sheaves 53 and 54 side.

At this time, the double-headed cylinder tilting device 111 has a first rope 71 connected to one end of the double-headed cylinder 120 and a second rope 72 connected to the other end. The double-headed cylinder type tilting device 112 has a fifth rope 75 connected to one end of the double-headed cylinder 120 and a sixth rope 76 connected to the other end.

On the other hand, the double-headed cylinder type tilting device 113 has one end of the double-headed cylinder 120 connected to the fourth rope 74 having a U-turn on the sheave 61 and the other end connected to an eighth rope 78 having a U-turn on the sheave 63. ing. In the double-headed cylinder type tilting device 114, a third rope 73 having a U-turned sheave 62 is connected to one end of the double-headed cylinder 120, and a seventh rope 77 having a U-turned sheave 64 is connected to the other end. . Since other than this is not different from the first invention, the same reference numerals are given to the same components, and detailed description is omitted.

  Thus, when the third and fourth double-headed cylinder tilting devices 113 and 114 are differentiated, the hanger 8 can be skewed. Further, when the third and fourth double-headed cylinder type tilting devices 113 and 114 are tuned, the hanger 8 can be shifted in the longitudinal direction thereof.

  As shown in FIG. 13, the double-head cylinder type tilting devices 111 to 114 are configured to slide the double-head cylinder 120 back and forth by an electric motor 119 as indicated by arrows.

8 Lifting tool 16 Drums 78, 74 and 73, 77 A set of two ropes x4, x8 and x3, x7 Slope sides 124, 125 Rope operation plates 130, 140 Shift control device

Claims (5)

A trolley provided with a drum and a plurality of sheaves, comprising a hanger having a multiple sheaves in a crane which is adapted suspending the hanger by a plurality of rope drawn out from the drum,
In the rope wrapping virtual surface assumed at both ends in the longitudinal direction of the lifting device, a pair of ropes pulled out from the drum forms a triangle between the lifting device and the trolley, and the ropes respectively The hypotenuses are oriented so that the hypotenuses are separated from each other , and the sheaves located at the center of the suspender lateral direction in the rope wrapping virtual surface assumed at both ends in the longitudinal direction of the suspender are sandwiched from both sides,
On the other hand, on the rope-wrapping virtual surface assumed at both ends in the transverse direction of the hanging tool, a pair of ropes drawn from the drum forms a triangle between the hanging tool and the trolley. And so that the hypotenuses face each other so that all triangles are congruent ,
Further, a pair of rope operation plates are provided rotatably at a predetermined interval in the lateral direction of the trolley, and rope attachment mounting holes are provided on both sides of a support shaft that pivotally supports the rope operation plate. Two ropes arranged on the imaginary surface on the lateral side of the hanger that spans the attachment attachment hole so that the hypotenuses face each other are attached via the rope attachment, respectively, and the anti-drum of the rope operation plate A rope hanging structure for a crane, wherein the rope operation plates are rotated in opposite directions by a cylinder mounted on the side . A trolley provided with a drum and a plurality of sheaves, comprising a hanger having a multiple sheaves in a crane which is adapted suspending the hanger by a plurality of rope drawn out from the drum,
In the rope wrapping virtual surface assumed at both ends in the longitudinal direction of the lifting device, a pair of ropes pulled out from the drum forms a triangle between the lifting device and the trolley, and the ropes respectively The hypotenuses are oriented so that the hypotenuses are separated from each other , and the sheaves located at the center of the suspender lateral direction in the rope wrapping virtual surface assumed at both ends in the longitudinal direction of the suspender are sandwiched from both sides,
On the other hand, on the rope-wrapping virtual surface assumed at both ends in the transverse direction of the hanging tool, a pair of ropes drawn from the drum forms a triangle between the hanging tool and the trolley. And so that the hypotenuses face each other so that all triangles are congruent ,
Further, a pair of double-headed cylinders are provided at a predetermined interval in the transverse direction of the trolley, and the two-headed cylinders are arranged on a virtual surface on the lateral side of the suspension that spans the drum side so that the hypotenuses face each other. A rope hanging structure for a crane , wherein one of a pair of ropes is attached and the other one is attached to the opposite drum side of the double-headed cylinder . Drum provided at one end portion in the longitudinal direction of the trolley, first sheave group provided in the central portion of the lifting tool transverse direction at both ends in the longitudinal direction of the lifting device in a direction in which the shaft core is orthogonal to the axial center of the drum Is a second sheave group that is parallel to the sheave shaft core of the first sheave group and provided at the four corners of the trolley, a third sheave group that the shaft core is parallel to the shaft core of the drum and that is provided on the opposite side of the trolley, and the shaft core Is a fourth sheave group orthogonal to the sheave axis of the first sheave group and provided at the four corners of the lifting device, and a fifth sheave group provided in the center of the trolley with the axis parallel to the axis of the drum and the sheave. A sixth sheave group whose surface is parallel or substantially parallel to the top surface of the trolley and associated with the fifth sheave group,
A first and second set of ropes that suspend a suspension tool from the drum via the first and second sheave groups, and a suspension tool from the drum via the third, first, and second sheave groups. A fifth set of ropes for suspending the first and sixth ropes, and suspending a suspension tool from the drum via the fourth, fifth and sixth sheave groups and the third, fourth and fifth sheave groups. The fourth and eighth sets of ropes, and the third and seventh sets of ropes form a triangle between the trolley and the suspension and all the triangles are congruent. Or the rope hanging structure of the crane of 2 description. Drum provided at the center of the trolley in the longitudinal direction, first sheave group provided at the center of the suspender lateral direction at both ends in the longitudinal direction of the suspender in the direction in which the axis is perpendicular to the axis of the drum and the shaft Is a second sheave group that is parallel to the sheave shaft core of the first sheave group and at the four corners of the trolley, a third sheave group that is parallel to the shaft core of the drum and at both ends of the trolley, and the shaft core is A fourth sheave group orthogonal to the sheave axis of the first sheave group and provided at the four corners of the lifting device, a fifth sheave group provided in the center of the trolley with the shaft core parallel to the axis of the drum, and the sheave surface A sixth sheave group that is parallel or substantially parallel to the top surface of the trolley and that is associated with the fifth sheave group,
A first and second set of ropes and a fifth and sixth set of ropes for suspending a hanging tool from the drum via the third, first and second sheave groups, and a third from the drum. 4th, 5th and 6th sheave groups and 4th and 8th set of ropes and 3rd and 7th 1 to suspend the suspension tool via the 3rd, 4th and 5th sheave groups. The crane rope hanging structure according to claim 1 or 2, wherein a pair of ropes form a triangle between the trolley and the suspension and all the triangles are congruent.   The crane rope hanging structure according to any one of claims 1 to 4, wherein the bases of all triangles formed by a rope hung between the trolley and the suspension are positioned on the trolley side.

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