JP2002154789A - Hoisting device for car gondola - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hoisting device for a car gondola miniaturizable and reducible in weight and cost regardless of lift and the number of wire ropes and moreover easy to assemble. SOLUTION: A partition flange 24 is provided at the outer periphery of a winding drum 11 to partition the winding drum 11 into the number of partitions (two partitions) equal to the number of wire ropes 2, and the end part of each wire rope 2 is attached to each partition. A traverser device 12 has a cam 15 for putting a guide block 13 in one reciprocating motion in the axial direction by the partition space part by one rotation. The wire ropes 2 are wound in a plurality of rows and a plurality of layers on the outer periphery of the respective partitions of the winding drum 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hoisting apparatus for raising and lowering a gondola used for maintenance of an outer wall surface of a building such as cleaning a window.

[0002]

2. Description of the Related Art In a window cleaning gondola, as shown in FIGS. 5 and 6, a winding drum (51) around which a plurality of cage hanging wire ropes (2) are wound, and a wire rope
A traverser device (5) that moves the guide pulley (53) for guiding (2) in the axial direction in synchronization with the winding movement of the wire rope (2).
2) A hoisting device for a gondola equipped with:

In a conventional gondola hoisting device, a winding drum (51) is wound in a single layer, and a traverser device (52) is provided with wheels (54) for rotatably supporting a guide pulley (53).
a) with a movable table (54), a screw screw (55) which is threaded in the opposite direction from the center and is rotatably supported on a bearing (56), and wheels (54a) of the movable table (54) ) And a fixed rail (57) for guiding the movable table (54).
Is a feed screw type that moves with the rotation of the screw screw (55). Then, the wire rope (2) is wound up when the movable table (54) moves outward in the left-right direction, and the wire rope is paid out when it moves inward.

FIG. 6A is a side view of a case where there are two wire ropes, and FIG. 6B is a side view of a case where there are four wire ropes. As shown in FIG. 2B, in addition to the four guide pulleys (53), another winding drum (51) is required.

[0005]

In the conventional hoisting device for a gondola described above, since the winding is performed in a single layer, the winding drum becomes larger as the head becomes higher, and the hoisting device as a whole becomes larger and heavier. There was a problem and an increase in cost.

[0006] The feed screw system using a screw screw is used because the moving distance of the guide pulley increases as the winding drum becomes longer.
As a result, there is a problem that the number of parts increases and it takes time to assemble.

[0007] When the number of wire ropes is four, the above problem becomes more serious because one pair of drums is required.

An object of the present invention is to provide a gondola hoisting apparatus which can be reduced in size and weight and cost can be reduced irrespective of the lift and the number of wire ropes, and can be easily assembled.

[0009]

SUMMARY OF THE INVENTION A gondola hoisting device according to the present invention comprises a winding drum on which a plurality of cage hanging wire ropes are wound, and a guide pulley for guiding the wire ropes. A gondola hoisting device having a traverser device that moves in the axial direction in synchronization with the winding movement, wherein a partitioning flange is provided on the outer periphery of the winding drum, and the winding drum has a number of sections equal to the number of wire ropes. And the end of each wire rope is attached to each section, and the traverser device has a cam that makes the guide pulley reciprocate once in the axial direction by the partition interval by one rotation, On the outer periphery of each section of the winding drum, wire ropes can be wound in a plurality of rows and a plurality of layers. It is.

[0010] The number of rows is preferably about 8 rows (5 to 10 rows), and the number of layers is preferably up to 10 layers (5 to 10 layers). When the number of rows is about eight, the one-way travel distance of the guide pulley may be as small as 6 to 10 cm. As a result, the traverser device is changed from a feed screw system using a screw screw to a reciprocating system using a cam. It becomes possible. Also, the number of layers can be increased by increasing the height of the flange as necessary, but if the number of windings increases, the winding diameter increases, and if the drum rotation speed is the same, Since the difference in the winding speed between the winding start and the winding end becomes large, it is preferable that the number of layers be at most about 10 at the maximum.

According to the gondola hoisting device of the present invention, the guide pulley is caused to reciprocate once in the axial direction by the partition interval by one revolution of the cam, and finally, the wire rope is wound on the winding drum in a plurality of rows. Wound in multiple layers.
Therefore, regardless of the lift and the number of wire ropes,
It is possible to reduce the size and weight, resulting in cost reduction.

In order to obtain such a gondola hoisting apparatus, for example, a traverser apparatus includes a movable base rotatably supporting a guide pulley, a disc-shaped groove cam having a guide groove formed therein, and a guide groove for the groove cam. A follower link having a cam follower fitted in the movable base and fixed to a movable base, and coupled to a shaft of a winding drum via a chain, and each time a reciprocating wire rope is wound around the winding drum, a groove cam is formed. And a speed reducer set so as to make one rotation.

In the case of a multi-layer winding, there is a problem that random winding (the wire rope cannot be wound neatly in order) is likely to occur, but the winding drum and the guide pulley are connected via a chain, a speed reducer and a cam. By mechanically synchronizing the rotation of the drum and the lateral movement of the guide pulley, the lateral movement of the guide pulley and the wire rope is prevented, and the winding position of the wire rope matches the pulley core. No turbulence occurs.

When winding two wire ropes,
Two guide pulleys are provided, and two partition flanges are provided at both ends of the winding drum and one is provided at the center thereof.
When winding four wire ropes, there are four guide pulleys, and the partition flange is
There are a total of five, two at both ends of the winding drum and three at equal intervals between them. That is, when winding four wire ropes, it is only necessary to add a partition flange instead of adding a winding drum as in the related art, and it is possible to further reduce the size and weight and reduce the cost. Become.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of a gondola in which a hoist according to the present invention is used. The gondola is used for maintenance of the outer wall of the building such as window cleaning. As shown in Fig. 1, the gondola (1) and the cage suspended from the roof of the building by the wire rope (2)
(3), a crane (4) for raising and lowering the cage (3), a fixed pulley (5), a winding drum (11), a guide pulley (13), etc., for winding and rewinding the wire rope (2). Hoisting equipment (1
0).

A hoisting device for a gondola according to the present invention (10)
As shown in FIGS. 2 and 3, a winding drum (11) around which two cage hanging wire ropes (2) are wound, and a fixed pulley (5) and a winding drum (11) are provided. A traverser device (12) that moves the guide pulley (13) arranged in the axial direction in synchronization with the winding movement of the wire rope (2),
The traverser device (12) includes a movable base (14) with wheels (14a) (14b) that rotatably supports the guide pulley (13), and a disk-shaped groove cam having a heart-shaped guide groove (16). (15) and a cam follower (1) fitted into the guide groove (16) of the groove cam (15) at the tip.
It has a follower link (17) having an 8) and fixed to the movable base (14), and a fixed rail (19) for guiding wheels (14a) of the movable base (14).

The winding drum (11) is driven by a motor (20), and the motor (20) and the shaft of the winding drum (11) are connected to a reduction gear (21) provided on the motor (20). Are connected via a small diameter spur gear (22) attached to the speed reducer and a large diameter spur gear (23) meshing with the small diameter spur gear (22).

At the outer periphery of the winding drum (11), partition flanges (24) are provided at both ends and at the center, whereby the winding drum (11) has a number equal to the number of wire ropes (2). Are divided into two sections. The ends of each wire rope (2) are attached to these two sections.

The emergency brake (2) is mounted on the winding drum (11).
5) and limit switches (not shown) are attached, but these are known and will not be described.

As shown in FIG. 3, the fixed rail (19) is formed in a groove shape and is guided as a wheel (14a) (14b) of the movable base (14) to the bottom wall of the fixed rail (19). Both a vertical one (14a) that moves by being moved and a horizontal one (14b) that is guided and moved by the side wall of the fixed rail (19) are provided.

When the groove cam (15) makes one rotation, the movable table (14)
Is reciprocated once, and is rotated by a worm speed reducer (26). A sprocket (28) is attached to the shaft of the worm speed reducer (26), and the winding drum (1
The shaft (1) is connected to a sprocket (27) attached to the end of the shaft on the side opposite to the motor via a chain (29). The speed reduction ratio of the worm speed reducer (26) is set so that the groove cam (15) makes one revolution each time the reciprocating wire rope is wound around the winding drum (11). Two layers are rolled for each rotation.

According to this gondola hoisting apparatus, for example, the groove cam (15) is set to rotate five times, and the number of rows of the wire rope (2) in one section is set to eight, and the guide pulley (13) is set. Is set to the total width of eight rows of the wire rope (2). When winding the second and subsequent layers, the gap between the lower wire ropes (2) is
It serves as a guide groove for guiding (2), and the wire rope (2) is wound in a plurality of rows and in a plurality of layers in each section without displacement even when winding the wire rope (2) in the upper layer.

In the above hoisting apparatus, it is preferable to reduce the fleet angle (half the lateral movement distance of the wire rope / the distance from the fixed pulley to the winding drum) in order to prevent the occurrence of random winding. If the linear distance from the pulley to the winding drum is to be increased, the length of the gondola body (1) increases, and the weight also increases. Therefore, in the above embodiment, the length of the gondola body (1) is prevented from being increased by folding the wire rope (2) by the guide pulley (13). In addition, if the guide pulley is a free pulley, that is, if the guide pulley is moved laterally using the force of lateral movement while the wire rope (2) itself is wound, the wire rope
(2) When the tension is lost or when a horizontal force acts on the guide pulley in some form (earthquake, inertia force, etc.) in the axial direction, the guide pulley may be turbulent. Take the take-up drum (11) and the guide pulley (13)
9), connected via a speed reducer (26) and a cam (15), and mechanically synchronizing the rotation of the winding drum (11) and the lateral movement of the guide pulley (13) to obtain a wire rope (2). If the tension of the guide pulley is lost or horizontal force acts on the guide pulley (13) in the axial direction,
There is no movement of the guide pulley (13), no lateral movement of the wire rope (2), and further, since the winding position of the wire rope (2) matches the core of the guide pulley (13), Is prevented from occurring. In this way, in the above embodiment, the fleet angle (half the lateral movement distance of the guide pulley / the distance between the fixed pulley and the guide pulley) can be up to 4 °, and the fixed pulley (5) and the guide pulley can be used. (13) can be reduced, that is, the gondola body (1) can be made compact.

A groove for guiding the first layer wire rope (2) may be provided on the outer peripheral surface of the winding drum (11). However, the number of rows is small and the partition flange (24) is provided. This groove can be omitted because both ends are pressed.

FIG. 4 shows a hoisting device for a gondola having four wire ropes (2). As shown in the figure, in this hoisting device, four guide pulleys (13) are provided in the traverser device (32) corresponding to the four wire ropes (2), and the length is doubled. At the outer periphery of the winding drum (31), a partition flange (24) is provided between both ends, the center and between each end and the center, whereby the winding drum (31) is connected to the wire rope (2). ) Are divided into the same number of sections (four).

The basic configuration of the apparatus shown in FIG. 4 is the same as that in the case where two wire ropes (2) are provided. In this way, a winding device for four wire ropes can be obtained from a winding device for two wire ropes with a slight design change.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a gondola in which a hoist according to the present invention is used.

FIG. 2 is a front view showing a gondola hoisting device according to the present invention.

FIG. 3 is a side view of the same.

FIG. 4 is a front view showing another embodiment of the gondola hoisting device according to the present invention.

FIG. 5 is a front view showing a conventional gondola hoisting device.

FIG. 6 is a side view of the same.

[Explanation of symbols]

 (2) Wire rope (11) (31) Winding drum (12) (32) Traverser device (13) Guide pulley (14) Movable table (15) Groove cam (16) Guide groove (17) Follower link (18) ) Cam follower (24) Partition flange (26) Reduction gear (29) Chain

Continuation of the front page (72) Inventor Takeshi Kuwashima 1-6-2 Nishinomiyahara, Yodogawa-ku, Osaka City Sansei Corporation (72) Inventor Shoji Yamanaka 1-6-2 Nishimiyahara, Yodogawa-ku Osaka City, Sansei Corporation F term (reference) 2E003 EA01 EA03 EB03 3F301 BA15 DD07 DD15

Claims (3)

[Claims] 1. A plurality of wire ropes for hanging a cage.
Winding drum (11) (31) around which (2) is wound, and wire rope
A traverser device (1) that moves the guide pulley (13) for guiding (2) in the axial direction in synchronization with the winding movement of the wire rope (2).
2) and (32), wherein a winding flange (24) is provided on the outer periphery of the winding drums (11) and (31), and the winding drums (11) and (31) are connected to a wire rope. It is divided into a number of sections equal to the number of (2), and the end of each wire rope (2) is attached to each section, and the traverser device (12) (32) guides by rotating once. It has a cam (15) that makes the pulley (13) reciprocate once in the axial direction by the partition interval, and the wire rope (2) is arranged in multiple rows and multiple layers around the section of the winding drum (11). A gondola hoisting device that can be wound. 2. The traverser device (12) (32) is a guide pulley.
A movable table (14) rotatably supporting (13), a disk-shaped groove cam (15) having a guide groove (16) formed therein, and a guide groove (1
The movable platform (14) having a cam follower (18) fitted in 6)
And a follower link (17) fixed to the shaft of the winding drum (11) via a chain (29).
Each time one round of wire rope (2) is wound around 1), the groove cam (1
The hoisting device for a gondola according to claim 1, further comprising a speed reducer (26) set to rotate (5) once. 3. There are four guide pulleys (13), and two partition flanges (24) are disposed at both ends of the winding drum (31) and three are disposed at equal intervals between them. 3. The hoisting device for a gondola according to claim 1, wherein the hoisting device is a total of five.