JP3268224B2 - Crane wire-leaving structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire-leaving structure of a crane, and is particularly effective when applied to a transfer crane or the like.

[0002]

2. Description of the Related Art A conventional wire leaving structure such as a transfer crane will be described with reference to FIG. FIG. 10 is a perspective view showing the overall schematic structure. FIG.
, 1 is a trolley, 2 is a spreader (hanging tool), 11
1 is a drum, 112 and 113 are auxiliary drums, 121a,
121b, 122a to 122d are sieves, 123a, 1
23b, 123a to 123d are auxiliary sheaves, 131a to
131d is a wire, 132a to 132d are auxiliary ropes,
100 is a suspended load (container).

The drum 111 is rotatably provided at one end in the traveling direction on the trolley 1 so that the axial direction is directed in the transverse direction of the trolley 1. Auxiliary drum 112,
Reference numeral 113 is rotatably provided at a central portion in the traveling direction on the trolley 1 so that the axial direction is directed in the transverse direction of the trolley 1.

[0004] The sheaves 121a and 121b are rotatably provided at the other end of the trolley 1 in the running direction so that the axial direction is directed in the transverse direction of the trolley 1. Is provided with two sheaves (not shown) whose axis is oriented in the transverse direction of the trolley 1 so as to be rotatable. The sheaves 122a to 122d are rotatably provided near four corners on the head block 2a of the spreader 2 so that the axial direction is directed in the transverse direction of the trolley 1.

[0005] The auxiliary sheaves 123a and 123b are rotatably provided at the other end of the trolley 1 in the traveling direction so that the axial direction is directed vertically.
Two auxiliary sheaves (not shown) whose axis is directed vertically are rotatably provided at one end in the traveling direction. The auxiliary sheaves 124a to 124d are rotatably provided in the vicinity of four corners of the trolley 1 so that the axial direction is directed to the traveling direction of the trolley 1.

[0006] The wires 131a to 131d are wound around the drum 111, and their respective ends pass through the corresponding sheaves 121a and 121b and the not-shown sheave, and then pass through the corresponding sheaves 122a to 122d. Each is fixed to the lower surface of the trolley 1.

[0007] The auxiliary ropes 132a and 132c are wound around the auxiliary drum 112, and the respective ends pass through the corresponding auxiliary sheaves 123a and 123c and then pass through the corresponding auxiliary sheaves 124a and 124c.
The spreader 2 is fixed to the head block 2a. The auxiliary ropes 132b and 132d are wound around the auxiliary drum 113, and each end passes through the corresponding auxiliary sheave (not shown) and then passes through the corresponding auxiliary sheaves 124b and 124d.
Are respectively fixed to the head blocks 2a.

That is, by rotating the drum 111 to feed or wind the wires 131a to 131d, the suspended load 100 can be lowered or raised via the spreader 2, while the auxiliary drum 1 can be lowered.
The auxiliary ropes 132a to 132
By sending or winding d, the swing of the suspended load 100 via the spreader 2 can be prevented.

[0009]

However, in the conventional wire leaving structure as described above, since the rigidity in the transverse direction is small, as shown in FIG. 100, the landing accuracy of the auxiliary ropes 132a to 132
The maintenance management of d was complicated and time-consuming.

[0010]

According to a first aspect of the present invention, there is provided a wire-leaving structure of a crane according to a first aspect of the present invention, comprising: a drum rotatably provided at a central portion of a trolley; and four corners of the trolley. Provided near each other,
A first sheave whose axis is oriented vertically, and a second sheave which is provided near each of the four corners of the trolley and whose axis is oriented in a direction intersecting with the axis of the drum and the first sheave; And a third sheave provided on each side of the trolley that sandwiches the drum, the third sheave having an axial center directed in a direction along the axial direction of the drum, wound around the drum, And four first wires for suspending the hanger via each of the first and second sheaves, and the first and second wires wound around the drum and passing through the corresponding third sheave, respectively. And four second wires for suspending the tool, wherein the first wire suspends and supports the vicinity of the axial center portion of the drum of the hanging tool, respectively, and the second wire is The vicinity of the center of the second sheave of the lifting gear in the axial direction is Characterized in that respectively are Tsu支.

According to a second aspect of the present invention, there is provided a crane wire-leaving structure according to a second aspect of the present invention, wherein a pair of drums are rotatably provided on one end and the other end of a trolley, respectively. A first sheave provided at each of the four corners of the trolley and oriented in the direction along the axis of the drum, and each is provided near the four corners of the trolley,
A second sheave whose axis is oriented in the vertical direction and in a direction intersecting with the axis direction of the drum, and provided on the one end side and the other end side of the trolley so as to make a pair, and the shaft of the drum is provided. A third sheave whose axis is oriented in a direction along the center,
The one end and the other end of the hanger are provided near a central portion in a direction connecting the other end and the other end of the hanger. A fourth sheave whose axis is oriented in the direction connecting the first and second sides, and a direction in which the one end and the other end of the hanger are connected to the other end and the other end of the hanger. One end is wound around the fifth sheave, which is provided in the vicinity of the central portion and whose axis is oriented in a direction connecting the other end and the other end of the hanging tool, and the drum at one end of the trolley. And the other end of which is wound around the drum on the other end of the trolley, and which suspends the hanger via the corresponding first, second and fourth sheaves in a crossing manner. And one end of the trolley is wound around the drum at one end of the trolley. The other end side is wound around the drum on the other end side, and the two second wires that suspend and support the hanger via the corresponding third and fifth sheaves in a crossing manner, respectively. It is characterized by comprising.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a wire-leaving structure for a crane according to the first invention will be described with reference to FIGS. FIG. 1 is a perspective view showing the overall schematic structure, FIG. 2 is a schematic plan view of FIG. 1, FIG. 3 is a schematic side view from the B portion side (lateral direction side) of FIG. FIG. 3 is a schematic front view from the A side (running direction side) of FIG. 2.

1 to 4, reference numeral 1 denotes a trolley, 2 denotes a spreader, 11 denotes a drum, 21a to 21d and 22.
a to 22d, 23a to 23d are sheaves, 31a to 31
d and 32a to 32d are wires, and 100 is a suspended load (container).

The drum 11 is rotatably provided at the center of the trolley 1 in the traveling direction (AC direction) so that the axial direction is directed in the transverse direction (BD direction) of the trolley 1. .

Sheaves 21a to 21d as first sheaves
Are rotatably disposed in the vicinity of the four corners of the trolley 1 such that the axial direction thereof is directed in the vertical direction. The sheaves 22a to 22d, which are the second sheaves,
1 and the direction orthogonal to the axial direction of the sheaves 21a to 21d, that is, the traveling direction of the trolley 1 (AC direction).
The trolleys 1 are rotatably disposed near the four corners of the trolley 1 so as to face. The third sheave, sheave 23
a to 23d are such that the axial direction is along the axial direction of the drum 11, that is, both ends of the traveling direction (AC direction) of the trolley 1 in the transverse direction (BD direction) of the trolley 1. Each is rotatably arranged in pairs.

The wire 31a as the first wire of the first wire
Is wound around the drum 11, passes through the sheave 21a, and then passes through the sheave 22a, and the tip of the spreader 2 is a central portion of one end (A side) in the traveling direction (AC direction) of the head block 2a of the spreader 2. It is fixed to. The wire 31b, which is the second first wire, is wound around the drum 11, passes through the sheave 21b, and then passes through the sheave 22b, and then the tip of the wire 31b runs in the traveling direction of the head block 2a of the spreader 2 (AC direction). ) It is fixed to the central portion on one end side (A side).

The wire 31c as the third first wire
Is wound around the drum 11, passes through the sheave 21c, and then passes through the sheave 22c, and the leading end thereof is located at the center of the other end side (C section side) in the traveling direction (AC direction) of the head block 2a of the spreader 2. It is fixed to the part. A wire 31d, which is the fourth first wire, is wound around the drum 11, passes through the sheave 21d, and then passes through the sheave 22d, and the tip of the wire 31d travels in the head block 2a of the spreader 2 in the running direction (AC direction). ) It is fixed to the center part on the other end side (C part side).

A wire 32a as a first second wire
After being wound around the drum 11 and passing through the sheave 23a, its tip is fixed to the vicinity of the central portion of the head block 2a of the spreader 2 on one end side (B-side) in the transverse direction (B-D direction). A second wire 32b, which is a second wire, is wound around the drum 11, and the sheave 23b
, The tip of the spreader 2 is fixed near the center of one end side (B side) of the head block 2a of the spreader 2 in the transverse direction (B-D direction).

The wire 32c as the third second wire
After being wound around the drum 11 and passing through the sheave 23c, its tip is fixed near the center of the other end side (D section side) of the head block 2a of the spreader 2 in the transverse direction (BD direction). . The wire 32d, which is the fourth second wire, is wound around the drum 11, and the sheave 23d
, The front end of the spreader 2 is fixed near the center of the other end side (D section side) of the head block 2a in the transverse direction (BD direction).

That is, the wires 31a-31d, 32a-
32d is oriented so as to have a truss-like leaving structure.

Therefore, according to such a wire-leaving structure, the drum 11 is rotated to rotate the wires 31a to 31a.
By sending or winding the 31d, 32a to 32d, the suspended load 100 can be lowered or raised via the spreader 2, and the wires 31a to 31d, 32a to 32d are not limited to the above. , The rigidity in both the traveling and traversing directions is increased, the swing of the suspended load 100 during transportation can be greatly suppressed, and the landing accuracy of the suspended load 100 is greatly increased. be able to. In addition, since it is not necessary to use an auxiliary rope as in the related art, it is possible to save time and effort for maintenance and management.

An embodiment of a wire-leaving structure for a crane according to the second invention will be described with reference to FIGS. 5 is a perspective view showing the overall schematic structure, FIG. 6 is a schematic plan view of FIG. 5, FIG. 7 is a schematic side view from the D part side (lateral direction side) of FIG. 6, and FIG. FIG. 9 is a schematic front view from the part A side (running direction side) in FIG. 6, and FIG. 9 is an explanatory diagram of the winding route of the wire.

5 to 8, 1 is a trolley, 2 is a spreader (hanging tool), 41 and 42 are drums, 51a to 55
a, 51b-55b, 56c-58c, 56d-58d
Is a sheave, 61a to 61d are wires, and 100 is a suspended load (container).

The drum 41 is rotatable in one running direction (AC direction) on the trolley 1 (C direction) so that the axial direction is directed in the transverse direction (BD direction) of the trolley 1. It is provided in. The drum 42 has a trolley 1 in the axial direction.
The trolley 1 is rotatably provided on the other end side (A section side) in the traveling direction (AC direction) on the trolley 1 so as to face in the transverse direction (B-D direction).

The sheaves 51a and 55a are arranged so that the axial direction thereof is in the direction along the axial direction of the drums 41 and 42, that is, in the transverse direction (BD direction) of the trolley 1, the traveling direction of the trolley 1 ( (A-C direction) It is each rotatably disposed near both ends on the other end side (A section side). Sheave 52
a and 54a are of a two-stage type, so that the axial direction is directed to the vertical direction and the direction orthogonal to the axial direction of the drums 41 and 42, that is, the traveling direction (A-C direction) of the trolley 1. Traveling direction of the trolley 1 (A-C direction)
Each is rotatably disposed near both ends on the other end side (part A side). The sheave 53a is of a two-stage type, and the axial direction is directed to a direction connecting one end side and the other end side of the spreader 2, that is, a traveling direction (A-C direction) of the trolley 1. The spreader 2 is rotatably disposed at a center portion on the other end side in the traveling direction (AC direction) of the trolley 1 on the head block 2 a of the spreader 2.

The sheaves 51b and 55b are arranged so that the axial direction of the sheaves 51b and 55b is oriented along the axial direction of the drums 41 and 42, that is, in the transverse direction (BD direction) of the trolley 1, and the running direction ( (A-C direction) It is each rotatably provided near both ends of one end side (C part side). Sheave 52
b and 54b are of a two-stage type, so that the axial direction is directed in the vertical direction and the direction orthogonal to the axial direction of the drums 41 and 42, that is, in the traveling direction (AC direction) of the trolley 1. Traveling direction of the trolley 1 (A-C direction)
Each is rotatably provided near both ends on one end side (C side). The sheave 53b is of a two-stage type, and its axial center is directed to a direction connecting one end side and the other end side of the spreader 2, that is, a traveling direction (AC direction) of the trolley 1. The spreader 2 is rotatably disposed at a center portion on one end side (C side) of the trolley 1 on the head block 2a in the traveling direction (AC direction).

The sheaves 56c and 58d are of a two-stage type, and the axial direction is along the axial direction of the drums 41 and 42, that is, the transverse direction (B-D direction) of the trolley 1.
In the traveling direction (AC direction) of the trolley 1, the trolley 1 is rotatably disposed near both ends on one end side (C side). The sheaves 57c and 57d are of a two-stage type, and have an axial direction connecting the other end and the other end of the spreader 2, that is, a transverse direction (B) of the trolley 1.
−D direction) in the transverse direction (BD direction) of the trolley 1 on the head block 2 a of the spreader 2.
Each is rotatably disposed at a center portion at both ends. The sheaves 58c and 56d are of a two-stage type, and the trolley 1 is oriented such that its axial direction is in the direction along the axial direction of the drums 41 and 42, that is, in the transverse direction (BD direction) of the trolley 1. 1 traveling direction (AC direction) other end side (A
) Are rotatably disposed in the vicinity of both ends.

The wire 61a has its base end (one end) wound around the drum 41, passes through the sheaves 51a to 55a in a crossing manner in the order shown in FIG. Is wrapped around. Wire 61b
Is wound around the drum 42 on the base end side (the other end side), and after passing the sheaves 51b to 55b in a crossing manner in the order shown in FIG. 9, the tip end (one end) is wound around the drum 41. .

The wire 61c has its base end (one end side) wound around the drum 41, passes through the sheaves 56c to 58c in the order shown in FIG. Is wrapped around. Wire 61d
In FIG. 9, the base end (the other end) is wound around the drum 42, the sheaves 56 d to 58 d are passed through in a crossing manner in the order shown in FIG. 9, and then the front end (one end) is wound around the drum 41. .

That is, in the present embodiment, the first sheave is the sheave 51a, 51b, 55a, 55b, the second sheave is the sheave 52a, 52b, 54a, 54b, and the third sheave is the sheave 56c. , 56d, 58c, 5
8d, the fourth sheave is the sheave 53a, 53b, the fifth sheave is the sheave 57c, 57d, the first wire is the wire 61a, 61b, and the second wire is the wire 61c, 61d. It is becoming.

Therefore, similarly to the above-described embodiment,
The wires 61a to 61d are oriented so as to form a truss-like leaving structure.

Therefore, according to such a wire leaving structure, the drums 41 and 42 are rotated so that the wire 6
By sending or winding the 1a to 61d, the suspended load 100 can be lowered or raised via the spreader 2 as in the above-described embodiment, and the wires 61a to 61d can be moved. Since the 61d is assembled in a truss shape as described above, the rigidity in both the running and traversing directions is increased in the same manner as in the above-described embodiment, and the swing of the suspended load 100 during transport can be significantly suppressed. In addition, the landing accuracy of the suspended load 100 can be greatly increased. Further, since it is not necessary to use an auxiliary rope as in the related art, it is possible to save the time and effort for maintenance management as in the above-described embodiment.

[0033]

According to the wire-leaving structure of the crane of the present invention, the wires are assembled in a truss shape, so that the rigidity in both the traveling and traversing directions is increased, and the swing of the suspended load during transportation is greatly reduced. Therefore, the landing accuracy of the suspended load can be greatly increased. In addition, since it is not necessary to use an auxiliary rope as in the related art, it is possible to save time and effort for maintenance management.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an overall schematic structure of an embodiment of a wire-leaving structure of a crane according to a first invention.

FIG. 2 is a schematic plan view of FIG.

FIG. 3 is a schematic side view from the side of a portion B (lateral direction side) in FIG. 2;

FIG. 4 is a schematic front view from the A section side (running direction side) in FIG. 2;

FIG. 5 is a perspective view illustrating an overall schematic structure of an embodiment of a wire leaving structure of a crane according to a second invention.

FIG. 6 is a schematic plan view of FIG.

FIG. 7 is a schematic side view from the D part side (lateral direction side) of FIG. 6;

FIG. 8 is a schematic front view from the A section side (running direction side) in FIG. 6;

FIG. 9 is an explanatory diagram of a wire winding route.

FIG. 10 is a perspective view illustrating an overall schematic structure of a conventional wire leaving structure of a crane.

[Explanation of symbols]

Reference Signs List 1 trolley 2 spreader (hanging tool) 11 drum 21a to 21d, 22a to 22d, 23a to 23d sheave 31a to 31d, 32a to 32d wire 41, 42 drum 51a to 55a, 51b to 55b, 56c to 58c, 5
6d-58d Sheave 61a-61d Wire 100 Hanging load (container)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-272999 (JP, A) JP-A-3-53985 (JP, U) JP-A-59-156083 (JP, U) JP-A 49- 49667 (JP, U) Special Table Hei 10-507435 (JP, A) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B66C 11/16 B66C 13/06

Claims (2)

(57) [Claims] 1. A drum rotatably provided at a central portion of a trolley, a first sheave provided near each of four corners of the trolley, and having an axial center directed vertically, and a drum near the four corners of the trolley. A second sheave, each of which is provided and whose axis is directed in a direction intersecting with the axis of the drum and the first sheave, and provided at both ends of the trolley sandwiching the drum, respectively. A third sheave whose axis is oriented in a direction along the axial direction of the drum, and a suspender that is wound around the drum and that suspends the hanger via the corresponding first and second sheaves. Four first wires that are wound around the drum, and four second wires that suspend and support the hanging tool via the corresponding third sheaves, respectively. One wire is the axis of the drum of the hanging tool A wire reeving structure for a crane, wherein the vicinity of the central portion in the direction is suspended, and the second wire is suspended in the vicinity of the central portion in the axial direction of the second sheave of the lifting device. 2. A pair of drums provided rotatably at one end and the other end of the trolley, respectively, and provided near four corners of the trolley, and arranged in a direction along an axial direction of the drum. A first sheave with a center, a second sheave provided near each of the four corners of the trolley, and having a center oriented in a vertical direction and a direction intersecting with the axis of the drum; one end of the trolley; And a third sheave, which is provided in pairs with the other end and has an axial center directed in a direction along the axial direction of the drum, and one end and the other end of the hanging tool. Fourths are provided in the vicinity of the central portion in the direction connecting the other end and the other end of the hanging tool, respectively, and have their axes oriented in the direction connecting the one end and the other end of the hanging tool. And the other end of the hanging device and the one end of the hanging device and the other end thereof. A fifth sheave, which is provided in the vicinity of the central portion in the direction connecting the side and the center of the trolley, the fifth sheave being oriented in the direction connecting the other end and the other end of the hanging tool; One end is wound around the drum, and the other end is wound around the drum at the other end of the trolley, and the hanger is passed through the corresponding first, second, and fourth sheaves in a crossing manner, respectively. And two first wires for suspending the trolley, one end of which is wound around the drum at one end of the trolley, and the other end of which is wound around the drum at the other end of the trolley. A wire reeving structure for a crane, comprising: a second sheave that suspends and supports the hanging tool via a fifth sheave in a crossing manner.