JPS60213695A - Self-advancing type hanger for cable crane - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a self-propelled hanger for a cable crane.

A case in which a cable crane is equipped with a conventional self-propelled hanger will be described with reference to FIG.

In FIG. 1, a hook block 4 is suspended by a hoisting cable 7 from a trolley 6 suspended from a main rope 2 stretched between amphibious cable towers 1 and 1', and is hoisted by a hoisting winch 5. Lowering is carried out, and the trolley 6 is moved left and right by the running winch 6 and the trolley running cable 8. However, since the span distance of the amphibian #: 11.1' is long and usually reaches several hundred fi, Apricot cable 7 is amphibious cable tower 1
, 1' and the trolley 6, and due to its own weight, the hook block 4 cannot be lifted up to the uppermost end and lowered again, making it impossible to continue the work. Prevent this condition
Several hangers 10a, 10b are placed between the main cable tower 1.1' and the trolley 6.

1 o/a, 10'b to support the hoisting cable l. Since the trolley 6 moves left and right during work, the trolleys (10a, 10b, 10'a, 10'l) are also self-propelled to automatically maintain the appropriate position. is used.

As for the self-propelled hangers; in Figure A1, the hangers 10a, 10b and 1 o/a, 10'b are each suspended from the main rope 2 and can run left and right. The hanger cables 9a and 9) are each fixed at both ends to the trolley +) 5, and are each fixed integrally with the running cable sheave 12.12', and are hung on the main rope tower 1.1'. j-cable sheave 13a, 1
3b, 13'a, and 13'b are each wound once and stretched into a loop, and the hanger 10a.

101), 1 o/a, and 10'b are each clamped by a clamping member 14 at their intermediate portions.

When the running winch 6 is driven to move the trolley 6 and the trolley running cable 8 is moved, the running cable sheaves 12 and 1
2' are rotated by the frictional force with the trolley running cable 8, respectively, and the hanger cable wheels 13a, 13 located on the same axis as the trolley running cable 8
b and i 6/, , i 6'b also perform the same] rotation, and the hanger cables 9a and 9b also move due to frictional force, but the non-ngar cable sheaves 13a, 13b and i 6'a
, i 6'o each has a diameter of 12°12'
Since the distances are 24 and % of the diameter of , the displacements of the hanger cables 9a and 9b are the same as the displacement of the trolley running cable 8, respectively.

For this purpose initially hangers 10a, 10b and 1 o/
a, 10'b to the hanger cables 9a and 9b, respectively, by setting the distance between the trolley 6 and the main cable towers 1, 1' to be equally divided. Even if the movement of hangers 10a, 10b and 10'a is performed.

The position of 10'b can always be kept equally divided. 5
− Become able to read. However, in this case, the running cable 8, the hanger cable 9a, 91) and each sheave 12, 13a, 13b and 12', 15'a, 1s'i) between the tonneau K. / The condition is that 7- is not changed.

However, the above-mentioned conventional self-propelled hanger has the following problems.

1) What is the trolley running cable, hanger cable, and famous wheel? *Since it is driven by vibrational force, slipping is likely to occur when the trolley 6 is moved at high speed due to the inertia of the sheave and the sheave, and therefore, it may slip during work. The position of each hanger is out of order - cPg Taihei is often required.

In particular, if the hanger is located at a position where the main rope has a high degree of interference (near the main cable tower), there is a high risk of slipping.

2) In a long-span cable crane, the number of hangers increases accordingly, and the number of hanger ropes and hanger sheaves increases proportionally, making the structure extremely complex.

5) Since the running cable sheave and the hanger cable east are each fixed integrally and mounted on the main cable tower 1.1', the load due to pressure on the running cable and hanger cable increases as the number of hangers increases. As the sheave becomes larger, the distance between the bearings used to support it also increases, so there is no need to worry about significantly increasing the diameter of the sheave's rotating shaft.

It is an object of the present invention to provide a self-propelled hanger that eliminates or alleviates the problems of the conventional self-propelled hangers described above.

A first embodiment of the present invention will be described below with reference to FIG.

In Figure 2, main cable towers 1 and 1', main cable 2, Toro IJ
5. The hook block 4, the hoisting winch 5, the running winch 6, the hoisting cable 7, and the running cable 9 have exactly the same construction as the conventional one shown in FIG. 1, and are given the same numbers.

Each hanger 10a, 10b and 1 o/a, 10'b
have a hanger moving sheave 17 and a hanger guide sheave 1, respectively.
9a, 19b and 19'a, 19'b are fixed together and mounted on the same axis. Hanger moving sheave 17 and hanger guide sheave 19al19t) and 19
The ratio of the diameters of /a and 19'b is 1 to '/(
o+B, ” ”/(n+t)゛””””/(n0B
In other words, in the case of n = 2, each and %
It becomes.

The hanger movable cable 16 has both 1iA fixed to the people trolley 6, wrapped around each hanger #moving sheave 17, and then sequentially connected in series Ii! Then, it is stretched in a loop shape.

The hanger guide rope 18 is both ☆ Ml (r large and large main rope Li1
l and 1, and the intermediate fsB is respectively)・
The cables are wound in the opposite direction to the Ngaunga moving cable and strung together, but details of the six sheaves and sheaves of Soreji are shown in Figure 6, Figure 4, and Figure 5171. has been done.

With the configuration described above, the trolley 6 is on the left A1 4e! l! u
1, the amount of movement of each... Nger moving sheave 17 and 6, Nger guide sheave 19 a, 19 t) and 19
Due to the differential operation due to the difference in the diameter of the ``a, 19'' tortoise), the amount of movement of the hanger moving cable 16, immediately ``F>) loli 6
The amount of movement is 5 and 4, respectively. Therefore [initially hanger 10a.

10b and 1 o/a, 11]'L) place 1f'e
If the distance between the trolley 6 and the main cable towers 1 and 1' is set at three equal intervals, even if the trolley 6 is moved afterwards, the distance between the trolley 5 and the main cable towers 1 and 1 will always be the same. ’ interval by 5
It can be held in a position where it is divided into equal parts.

The effects of using the above self-propelled hanger according to the present invention are as follows: 1) The hanger # moving rope 16 and the hanger guide rope 18 are connected to the hanger drive sheave 16 and the hanger guide sheave 19a, respectively.
19b and 19'a, 19'b in opposite directions, and each hanger 10a, 10b and i o/
Since the cables are connected to the main ropes (a, 10'l), they do not slip against each other, so there is no need to readjust them during work, and there is almost no slippage, especially in areas where the main rope has a large slope. 2) Even if a large number of hangers are required for a long-span cable crane, each hanger has 10
a, 10b...i 0'a * 10'
b Hanger guide sheave 1 mounted on...
9a, 19b...19/a, 19'b
By setting the diameter of each hanger to a predetermined size, the position of each hanger can be controlled with one hanger guide cable 18, making the structure extremely simple.5) The number of hangers When the number of hangers increases, in the conventional self-propelled hanger, the hanger cable cars 12a, 1211...
12'a, 12'l).........and the rotating shafts and bearings for mounting them on the main rope towers 1, 1 also become large, making the design extremely difficult. However, according to the present invention, it is only necessary to mount one sheave, one sheave for each hanger, and one sheave for each hanger guide on each hanger, which makes the design advantageous.

Next is the 25th j! An example will be explained with reference to FIG. As is clear from the drawings, in this embodiment, the hanger moving cable 16 shown in FIG. The structure is simplified, and it is used when the number of hangers is small.

[Brief explanation of the drawing]

Figure 1 is a full 1h1 diagram of a cable crane equipped with a conventional self-propelled hanger, Figure 2 is a front view of the first embodiment of the present invention, and Figure 6 is the self-propelled hanger of Figure 2. Detailed front view of Figure 4 is f of Figure 6.
FIG. 5 is an enlarged view of section A in FIG. 4, and FIG. 6 is a front view of the second embodiment of the present invention. 1.1'... Main cable tower, 2... Main cable, 6... Trolley, 4... Funk block, 5... Hoisting winch, 6
... Traveling winch, 7... Hoisting cable, 8... Trolley running cable, 9a. 91) ---Ha7gar rope, 10a, 10b
, 1 o/a, 10'b...hanger, 12,
12'...Travelling sheave, 13a, 13b. 13'a, 16'b... Ngar cable car, 14
. . . No-nger rope ramp stop, 16 . . . Hanger moving rope, 17 . . . Hanger moving sheave, 18 . . . Hanger guide rope, 19a. 19 b , 19'a , 19'b ・/-7 Garguide sheave agent Patent attorney Takeo Goto Agent Patent attorney Isao Fujimoto Figure 3 Figure 4

Claims (1)

[Claims] When the trolley suspended between the two cable towers of the cable crane is moved from side to side by the 1-p running cable and the running winch, both ends of which were fixed to the trolley the day before, the trolley is unrolled from the trolley.
In a self-propelled hanger in which a hook block suspended by a cable is equipped with several (n) hangers for support between the trolley and the amphibious cable guide, each hanger is provided with a hanger moving line. The respective diameters of the car and the hanger guide sheave (il-1 pair"/(n+1), "'"/(n+o
-・-・'/(The ratio of n + H is fixed coaxially and integrally, respectively, and the movable wood fibers are serially mounted from the trolley side to the amphibious cable tower side, and the hangers with both ends fixed to the trolleys, respectively. The trolleys are placed in approximately equal parts and strung in series, and the hanger guide cables, both ends of which are fixed to the amphipod cable guides, are attached to each of the hanger guide sheaves opposite to the... When the trolley is moved in the left-right direction, each hanger is maintained at a position that divides the trolley and the amphibious cable tower approximately equally, and A self-propelled hanger for a cable crane, characterized in that the hook block is prevented from being lifted by supporting the weight of the hoisting cable.