JPS604120B2 - Working area conversion method for double cantilever type rope trolley type unloader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for converting the working area of a rope trolley type unloader equipped with a double cantilever hoisting device, which allows the working area to be easily changed.

Each of the drawings shows an embodiment of a double cantilever type rope trolley type fan loader to which the present invention is applied.

In Figure 1, 1 is a bucket for catching loose items inside the ship, 2
3 is a main trolley equipped with a hoisting/opening/closing sheave 44, and 3 is an auxiliary trolley equipped with a hoisting/opening/closing guide sheave 33. The main trolley 2 and auxiliary trolley 3 are connected via the traversing ropes 18 and 19 by the rotation of the traversing drum 10. It traverses over the girder 23 and cantilevers 24 and 25.

Note that the traverse speed of the main trolley 2 during unloading work is twice the traverse speed of the auxiliary trolley 3.

4 and 5 are the traverse guide sheave carts, and the traverse guide sheave 46,
26. Equipped with traversing guide sheep cart moving sheaves 47, 28, and cantilever 2 by anchors 49, 50 during cargo handling.
4, 25, is firmly fixed on the girder 23.

In addition, this FIG. 1 shows the main trolley 2 and the auxiliary trolley 3 when the main trolley 2 performs cargo handling work using the left cantilever 24.
, shows the relationship between the traverse guide sheave carts 4 and 5.

In this case, the necessary condition is that the auxiliary trolley 3 and the traverse guide sheave truck 5 are always on the girder 23.

Reference numeral 8 denotes an opening/closing drum, which is connected via an opening/closing lobe 14 to a direction changing sheave 39 at the upper part of the leg (not shown), a hoisting, opening/closing guide sheave 3
3. The bucket 1 is opened and closed by being guided by the hoisting opening/closing sheave 44.

Reference numeral 9 denotes a hoisting drum, which is connected via a hoisting rope 15 to a direction changing sheave 39 on the upper chest (not shown) and a hoisting opening/closing guide sheave 33.
, is guided to a hoisting opening/closing sheave 44, and is connected to the upper sheave box of the bucket tow to hoist and lower the bucket 1.

The traversing rope 18 fixed to the cylindrical traversing drum 10' is attached to the guide sheave 3 at the upper part of the leg (not shown).
8. Traversing guide sheave The rope is guided to a traversing guide sheave 46 equipped on the trolley 4 and connected to the rope end attachment part 45 of the main trolley 2.

In addition, the other traversing wire rope 19 is connected to the main trolley 2,
A guide sheave 40 equipped on the interval adjustment trolley 22 of the auxiliary trolley 3, a guide sheave 29 on the upper leg (not shown), a traverse guide sheep 26 equipped on the traverse guide sheep trolley 5,
It is guided to a traverse guide sheave 32 installed on the auxiliary trolley 3 and connected to a rope end attachment portion 27 of the traverse guide sheave truck 5.

Reference numeral 13 denotes a drum for moving the traverse guide sheave carts 4 and 5.

As shown in detail in FIG. 4, this drum 13 includes a drum 12 for driving a spacing adjustment trolley 22 for the main trolley 2 and auxiliary trolley 3, and a compensating rope 20 for changing the working area.
It is mechanically connected to the length adjusting drum 11 by a gear. Incidentally, the drums 11 and 12 are processed so that they are coaxial and rotate at the same time. Therefore, 13 drums and 11
, 12 drums are always rotated at a predetermined constant ratio. A wire rope (interval adjustment rope) 21 fixed to the drum 12 is connected to an interval adjustment trolley 22.
Guide sheave 41, drums 11, 12, 13 equipped with
A fixed thieves 42 installed on a common bed (not shown)
and is connected to the rope end attachment part 43.

The spacing adjustment trolley 22 is constantly pulled in the direction of the guide sheave 29 by the rope tension of the bucket 1 via the auxiliary trolley 3 and the traversing rope 19 with a tension twice the weight of the bucket 1.

Moreover, this interval adjustment trolley 22 is connected to a trolley guide rail 53.
It is structured so that it can be guided and moved.

A wire rope (traversing guide sheave truck moving rope) 52 fixed to the drum 13 for moving the traversing guide sheave truck is guided by the sheave 31 provided on the upper surface of the center portion of the girder 23 and the girder end sheave 35, and is fixed to the end of the cantilever 24. The cantilever 24
It is connected to the rope end attachment part 17 at the end.

The other wire rope 51 fixed to the moving drum 13 (rope for moving the traversing guide sheep cart) is guided by the sheave 30 provided on the upper surface of the central part of the girder 23 and the girder end sheave 36, and is guided by the cantilever The cantilever 25 is connected to the rope end attachment portion 16 at the end of the cantilever 25 via a sheave 7 fixed to the end of the cantilever 25 and a sheave 28 that moves the sheave 28 mounted on the sheave 5 .

The compensation rope 20 fixed to the compensation rope length adjustment drum 11 is connected to the lobe attached to the main trolley 2 via a guide sheave 37 on the upper leg (not shown) and a guide sheave 34 attached to the pail trolley 3. It is connected to the end attachment part 48.

During cargo handling work, the drum 13 for moving the traverse guide sheave cart,
The compensation rope length adjustment drum 11 and the interval adjustment trolley drive drum 12 are not driven, and the opening/closing drum 8 and the hoisting drum 9 are not driven.
Then, the traversing drum 10 is driven to cause the bucket 1 to be hoisted, lowered, opened/closed, and traversed via the main trolley 2 and the auxiliary trolley 3.

A working area conversion method according to the present invention will be described below using the double cantilever type rope trolley type unloader configured as described above.

First, the synchronization operation when changing the working area from the state shown in FIG. 2 to the state shown in FIG. 3 will be described with reference to FIGS. 2 and 3.

The undulating drum 54 is rotated, the undulating rope 56 is loosened, the cantilever 25 on the right bank side is lowered until it becomes horizontal, and the traversing guide sheave carts 4 and 5 are released from the anchors 49 and 50.

In FIG. 4, when the traverse guide sheave cart moving drum motor 58 is rotated to the left, the moving drum 13 is rotated to the left.
The wire rope 52 is unwound and moved to the traverse guide sheave truck 4
is constantly pulled to the right by the weight of the bucket 1 via the traversing rope 18, so it starts moving to the right.

The wire rope 51 is wound around the moving drum 13 to a length equal to the unwound length of the wire rope 52, and the traverse guide sheave truck 5 starts moving rightward at equal intervals with the traverse guide sheave truck 4. When the traverse guide sheave carts 4 and 5 are moved to the right in this manner, the bucket 1 is further hoisted up.

In this way, when converting the work area, if the bucket 1 rises or falls as the main trolley 2 moves, there is a risk that the bucket toe will hit an obstacle, which is not preferable. Further, the traversing rope 19 is under tension and tries to prevent the movement of the traversing guide sheave truck 5, and the traversing rope 18 begins to loosen. Further, the compensating rope 20' is under tension and tries to prevent the movement of the bucket trolley 3.

In order to smooth out these inconvenient or conflicting movements, the present invention provides a control system that connects the hoisting drum motor, A synchronization command is sent to the opening/closing drum motor and the transverse drum motor (not shown) to make them interlock.

That is, the motor 58 for the traverse guide sheave cart moving drum
The drum 13 for moving the traversing guide sheave cart is rotated to the left, and the traversing guide sheave carts 4 and 5 begin to move to the right.At the same time, the hoisting drum 9 and the opening/closing drum 8 move to the bucket at a predetermined synchronized speed. 1 lowering direction (drum 8
, 9 clockwise) to loosen the opening/closing rope 14 and hoisting rope 15. Furthermore, even if the traversing drum 101 gets stuck, it is rotated clockwise at a predetermined synchronous speed, and the traversing lobe 18 is wound up and the traversing rope 19 is loosened.
Next, the drive drums 12 of the interval adjustment trolleys 22 of the auxiliary trolley 3 and the main trolley 2, which are connected to the guide sheave trolley moving drum motor 58 via a speed reduction mechanism, rotate clockwise to move the interval adjustment trolley 22 between the guide sheave 29 to shorten the distance between the main trolley 2 and the auxiliary trolley 3. This purpose is because the working range of the main trolley 2 cannot be effectively used at the end of the cantilever 25 by simply moving the traversing guide sheave carts 4 and 5 and changing the working area from the left bank side to the right bank side.

In order to eliminate this inconvenience, main trolley 12 and bucket trolley 3
The distance between the auxiliary trolley 3 and the traverse guide sheave trolley 5 is reduced.
This allows the main trolley 2 to approach the Tachibana trolley 3 as close as possible without interfering with it when the main trolley 2 approaches the limit.

a compensation rope 20 coaxially connected directly to the drive drum 12;
The length adjustment drum 11 rotates to the right, lets out the compensation rope 20, and adjusts the distance between the auxiliary trolley 3 and the guide sheave 37 and the distance between the auxiliary trolley 3 and the main trolley 2 to predetermined intervals while adjusting the working area. It converts.

When the traverse guide sheave truck 5 has moved to a predetermined position at the end of the cantilever 25, a stop limit switch (not shown) is activated to stop the traverse guide sheave truck moving drum motor 58, and the work area is changed. is completed.

In this case, the traverse guide sheave truck 4 stops at the left end of the girder 23. When the work area conversion is completed, the traverse guide thief carts 4 and 5 are fixed to anchors (not shown), and the undulating drum 55 is rotated to wind up the undulating rope 57.
The cantilever 24 on the left bank side is raised, and all the work area conversion work is completed, resulting in the state shown in FIG. 3.

Moreover, when converting from FIG. 3 to FIG. 2, the above-mentioned reverse operation is performed.

When the entire crane is to be stopped, the main trolley 2 is moved onto the girder 23 in the state shown in FIG. 2, and then the cantilever 24 on the left bank side is raised and the crane is stopped.

As described above, according to the present invention, when converting the work area from one cantilever side to the other cantilever side, while preventing the vertical movement of the bucket and the movement of the traverse guide C-Boo cart, etc. And, while the interval between the main trolley and the auxiliary trolley is adjusted to a predetermined distance,
Since each of the traverse guide sheave carts, main trolley, and shelf trolley can be moved, the work area conversion work can be performed efficiently, smoothly, and easily.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention. FIG. 1 is a perspective view showing how to hoist, open and close the cantilever type rope trolley type unloader, and how to hang the traverse compensation rope, the traverse guide sheave truck rope, and the auxiliary trolley position adjustment rope. FIG. 2 is a schematic diagram showing the cargo handling state on the left bank of the double cantilever type rope trolley type unloader. FIG. 3 is a schematic diagram showing the cargo handling state on the right bank of the double cantilever type rope trolley type unloader. Figure 4 shows the traverse guide sheave truck driven by the traverse guide sheave truck moving drum motor, the drive drum, the compensation rope length adjustment drum, the main trolley, and the supplementary trolley. FIG. 3 is a plan view showing the relationship between the arrangement and mechanical connection of the cart driving drum for adjusting the Lee interval. 1...Bucket, 2...Main trolley, 3...
Auxiliary trolley, 4, 5...traverse guide sheave trolley,
6, 7...Fixed sheave, 8...Opening/closing drum, 9...
...Hoisting drum, 10... Traverse drum, 11...
... Compensation rope adjustment drum, 12 ... Main, auxiliary trolley interval adjustment trolley drive drum, 13 ... Traverse guide sheave cart movement drum, 14 ... Opening/closing rope, 15
...Hoisting rope, 16,17...Rope end attachment part, 18,19...Transverse rope,
20... Compensation rope, 21...0 wire rope, 22... Spacing adjustment trolley, 23...
... Guarda, 24, 25... ...cantilever,
26,46... Traverse guide sheave, 27,45...
'Rope handle attachment part, 28, 47...Traverse guide sheave, trolley moving sheave, 29...Guide sheave, 3
0, 31...Sheave, 32...Transverse guide sheave, 33...Hoisting, opening/closing guide sheave, 34.
...Guide sheave, 35, 36...Girder end sheave, 37, 38...Guide sheave, 39...
... Direction change sheave, 40, 41 ... Guide sheave, 42 ... Fixed sheave, 43 ...
Rope end attachment part, 44...Hoisting, opening/closing sheave, 45...Rope end attachment part, 46...
...Transverse guide sheave, 48...Rope end attachment part, 49,50...Anchor, 51,52...
... Wire rope, 53 ... Truck guide rail, 54, 55 ... Elevating drum, 56, 57 ...
...Luffing rope, 58...Traverse guide sheave cart moving drum motor, 59...Speed control brake, 60...Stopping brake, 61, 62...
...Hopper. Figure 2, figure 3, figure 4

Claims (1)

[Claims] 1. Equipped with a gutter and cantilevers that can be tilted up and down on both sides, and on these girders and cantilevers, a main trolley, an auxiliary trolley, and 2 trolleys arranged on the outside of them.
Each traversing guide sheave truck is installed so that it can run freely.
The opening/closing drum and hoisting drum for the bucket are connected to the bucket by the bucket opening/closing hoisting rope provided via the auxiliary trolley and the main trolley, and the main trolley and the traverse guide sheave truck on the main trolley side are connected. , a traversing drum, a cart for adjusting the interval between the main trolley and the auxiliary trolley, a traversing guide sheave cart on the auxiliary trolley side, and an auxiliary trolley, one end of which is connected to the main trolley, and the other end is connected to the traverse of the auxiliary trolley. The drum for moving the traversing guide sheave cart and both traversing guide sheave carts are connected by the traversing guide sheave cart moving rope, and the driving drum of the spacing adjustment cart is connected to the guide sheave cart by a traversing rope. and the spacing adjustment trolley are connected by a spacing adjustment rope,
The compensation rope length adjustment drum and the main trolley are connected by a compensation rope via an auxiliary trolley, and the interval adjustment trolley drive drum and the compensation rope length adjustment drum rotate in conjunction with the traverse guide sheave truck movement drum. When converting the cargo handling work area from one cantilever side to the other cantilever side using a double cantilever type rope trolley type unloader configured as shown in FIG. As the guide sheave carts are moved in the same direction, the hoisting drum and opening/closing drum are rotated to prevent the bucket from moving in the vertical direction, while preventing the traversing rope from blocking the movement of the traversing guide sheave cart. The traversing drum is rotated, and the distance adjusting trolley drive drum and the compensating rope length adjusting drum are configured to move the main trolley and the auxiliary trolley while adjusting the distance between the main trolley and the auxiliary trolley to a predetermined distance. to be rotated,
A synchronization command is sent from a transmitter installed in the traversing guide sheave cart moving drum motor to the hoisting drum motor, opening/closing drum motor, and traversing drum motor, and the traversing guide sheave cart moving drum and interval adjustment cart driving drum are transmitted. and a double cantilever type, characterized in that the compensating rope length adjusting drum, the hoisting drum, the opening/closing drum, and the traversing drum are synchronized and rotated in conjunction with each other so that the work area can be easily changed. How to convert the working area of a rope trolley type unloader.