JPH0527428Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a crane equipped with a traversing trolley for moving cargo, and in particular, a multi-purpose crane that allows the selection of hoisting devices depending on the type of cargo. It is related to.

[Conventional technology]

Conventional cranes equipped with a traversing trolley are generally those equipped with lifting equipment for non-bulk cargo such as a hanging beam that can be raised and lowered (hereinafter referred to as the "former conventional crane"); Cranes are broadly divided into cranes equipped with hanging tools for bulk cargo such as grab buckets that can be opened and closed freely (hereinafter referred to as "the latter type of conventional cranes").

In other words, the former type of conventional crane can effectively handle non-bulk cargo such as containers due to the function of the lifting equipment, but it is not effective as a crane for loading and unloading bulk cargo such as lime. It cannot be made to work.

On the other hand, the latter type of conventional crane, due to the function of the lifting equipment, can handle bulk cargo, but it can load and handle non-bulk cargo.
It is difficult to unload.

Therefore, in recent years, there has been a strong desire to load and unload both non-bulk and bulk cargo with a single crane due to equipment costs and crane installation locations. The reality is that cranes cannot adequately meet these demands. It should be noted that if the lifting device is equipped with a function for non-bulk cargo and a function for bulk cargo, this request can be met, but such a lifting device is significantly more expensive than a lifting device with a single function. This increases the weight, which poses structural problems for the crane, and combined with the trend toward higher speeds for traversing trolleys, it is extremely difficult to put it into practical use.

[Problem that the invention attempts to solve]

The present invention was developed in view of these circumstances, and allows for efficient loading and unloading of non-bulk and bulk cargo with a single machine.
The purpose is to provide a multi-purpose crane that can unload cargo.

[Means for solving problems]

The multi-purpose crane of the present invention that solves this problem is provided with first and second traversing trolleys that independently traverse on a predetermined traversing route on the crane frame, and also pays out and winds up the first and second ropes, respectively. The first and second drums to be operated are provided, the first traversing trolley is provided with a first hoist for non-bulk cargo that is lifted and lowered by the first and second ropes, and the second traversing trolley is lifted and lowered by the first rope. A second hanging device for bulk cargo that is operated and opened and closed by a second rope is provided, and a first lock that can lock the first hanging device so that it cannot be lifted or lowered is provided between the first traversing trolley and the first hanging device. A second locking mechanism is interposed between the second traveling trolley and the second hanging device to lock the second hanging device so that the second hanging device cannot be lifted or lowered, and the second locking mechanism is interposed between the second traveling trolley and the second hanging device, and the second locking mechanism is interposed between the second traveling trolley and the second hanging device. A third locking mechanism is provided that can be locked. Thus, the first rope is connected from the first drum to the first guide sheave provided on the first traversing trolley and the first rope.
It is fixed to the crane frame after successively passing through the first elevating sheave provided on the hoist, the elevating guide sheave provided on the second traversing trolley, and the elevating sheave provided on the second hoist. The second rope extends from the second drum to a second guide sheave provided on the first traversing trolley, a second elevating sheave provided on the first hanging tool,
It passes sequentially through an opening/closing guide sheave provided on the second traversing trolley and an opening/closing operation sheave provided on the second hanging tool, and is fixed to the crane frame.

[Effect]

When loading/unloading non-bulk cargo such as containers, the second traversing trolley is stopped and held at one end of the traversing path in advance, and the second hanging device is prevented from being raised or lowered by the second and third lock mechanisms. Moreover, it is locked so that it cannot be opened or closed.

In this state, the presence of the second traversing trolley is
without interfering with the traversal of the traversing trolley;
The rope will function only as an operating rope for raising and lowering the first hanging tool. In other words, the lifting guide sheave, lifting operation sheave, opening/closing guide sheave, and opening/closing operation sheave in the second traversing trolley and the second hanging device only function as fixed sheaves that guide the first and second ropes, and each lifting device operating rope Passing through these sheaves has no effect on the lifting and lowering operation of the first hanging tool.

Therefore, the crane structure in this state is the same as the former conventional crane.
Thereafter, by performing the traversing operation of the first traversing trolley and the raising and lowering operation of the first hanging tool, non-bulk cargo can be loaded and unloaded favorably in the same manner as with such conventional cranes.

In addition, when loading and unloading bulk cargo such as lime, the first traversing trolley is stopped and held at the other end of the traversing path in advance, and the first hanging device is prevented from being raised or lowered by the first lock mechanism. Keep it locked.

In this state, the presence of the first traversing trolley is
The first and second trolleys are
The rope functions only as an operating rope for raising/lowering/opening/closing the second hanging tool. In other words, each guide sheave and lifting operation sheave in the first traversing trolley and the first hanging device only function as fixed sheaves that guide the first and second ropes, and each lifting device operating rope does not pass through these sheaves. does not affect the lifting/lowering/opening/closing operation of the second hanging tool.

Therefore, since the crane structure in this state is similar to the latter conventional crane,
Thereafter, by performing the traversing operation of the second traversing trolley and the raising/lowering/opening/closing operations of the second hanging tool, bulk cargo can be loaded and unloaded favorably in the same manner as with such conventional cranes.

〔Example〕

Hereinafter, the structure of the present invention will be specifically explained based on the embodiments shown in FIGS. 1 to 5. This embodiment relates to an example in which the present invention is applied to a rope trolley type bridge crane.

In the bridge type crane shown in Fig. 1, 1 is a pedestal movably installed on a quay 2, 3 is a girder fixed to the top of the pedestal 1, and 4 is a girder attached to the front end of the girder 3 so as to be able to rotate upward. A boom extends over the attached berthed vessel 5, 6 is a series of transverse rails formed on the girder 3 and boom 4, 7 is a first transverse trolley supported on the transverse rails so that it can freely traverse, and 8 is a first transverse trolley.
A second traversing trolley supported by the traversing rail 6 on the rear side of the traversing trolley 7, 9 is a hanging beam serving as a first hanging device installed on the first traversing trolley 7, and 10 is installed on the second traversing trolley 8. 11 is a container transportation trailer, and 12 is a bulk cargo discharging device.

The first and second traversing trolleys 7, 8 are a plurality of traversing trolleys (two in this embodiment) stretched between the traversing trolleys 7, 8 and a traversing operation drum 15 disposed on the girder 3. A trolley traversing operating device 14 comprising ropes 16, 16 and first and second clamp devices 17, 17 and 18, 18 disposed on the traversing trolleys 7, 8 is configured to cause each trolley to traverse separately. has been done.

That is, this trolley traverse operation device 14 is
As shown in FIG.
The second clamp device 18 is tensioned to form a loop path that reaches the drum 15 via the land-side sheave 20, and by driving each rope 16 to rotate as the drum 15 rotates, the first clamp Device 1
7 in the clamped state and the second clamping device 18 in the unclamped state, only the first traversing trolley 7 is traversed in the direction of rotation of the rope 16, and the second clamping device 18 When the first clamp device 17 is operated in the clamped state and the first clamp device 17 is operated in the unclamped state, the second traversing trolley 8 is configured to traverse in the direction of rotation of the rope 16. Note that since the clamp devices 17 and 18 are well known, their details will be omitted. Further, each sea side sheave 19 is installed at the front end of the boom 4, and each land side sheave 20 is installed at the rear end of the girder 3, and each rope 16 is installed between the drum 15 and the sea side sheave 19. is a guide sheave 21 installed on the girder 3 or boom 4
Supported by...

Furthermore, in the case of the trolley traversing operating device 14, the first traversing trolley 7 is placed between each of the traversing trolleys 7 and 8 and the girder 3 or the boom 4, and the second traversing trolley 8 is placed at the sea side end portion of the traversing route. A trolley fixing and holding mechanism is interposed to fix and hold the trolleys at the land side end portions of the traversing route. In this embodiment, as shown in FIG.
2 and 23 are provided, and engagement recesses 24 and 25 are formed in the front end portion of the boom 4 and the rear end portion of the girder 3, respectively. By lowering the engaging protrusion 22 and engaging the engaging recess 24, the first traversing trolley 7 can be fixedly held at the front end portion of the boom 4 (see Fig. 2). ), similarly, by moving the second traversing trolley 8 traversing the rear end portion of the traversing rail 6, and then operating the engagement protrusion 23 downward to engage the engagement recess 25, the second The traversing trolley 8 can be fixedly held at the rear end portion of the girder 3 (see FIG. 1). Note that the configuration of the trolley fixing and holding mechanism is arbitrary, and for example, a clamp body for clamping the traversing rail 6 may be provided on each of the traversing trolleys 7 and 8. Of course, if the traversing trolley is equipped with a brake device, such as a so-called semi-rope trolley type crane (the trolley traversing operation is self-propelled), it is not necessary to provide the fixing and holding mechanism.

The first and second hanging tools 9, 10 are connected to first and second drums 27, 28, a plurality of (two in this embodiment) first ropes 29, 29 fed out from the first drum 27, and a first rope 29, 29. A plurality of (two in this embodiment) second ropes 3 are fed out from the second drum 28.
It is configured to be operated by a hanger operating device 26 having a hanger 0 and 30.

That is, as shown in FIG. 4, the first traversing trolley 7 has two pairs of first guide sheaves 31a, 31
a, 31b, 31b and second guide sheave 32
a, 32a, 32b, 32b, and the second traversing trolley 8 has two pairs of lifting guide sheaves 33a, 33, respectively.
a, 33b 33b and opening/closing guide sheave 34a,
34a, 34b, 34b are connected to the upper block 10 of the second hanging tool 10, and a pair of first and second lifting operation sheaves 35, 35 and 36, 36 are connected to the upper block 10 of the second hanging tool 10, respectively.
A has a pair of lifting sheaves 37, 37 and a first opening/closing sheave 38, 38, and a lower block 10b of the second hanging tool 10 has two pairs of second opening/closing sheaves 39a, 39a, 39b, 39b. , boom 3
A pair of first and second sea-side guide sheaves 40, 40 and 41, 41 are located at the front end of the girder 4, and a pair of first and second land-side guide sheaves 42, 42 are located at the rear end of the girder 4. and 43, 43 are provided, respectively. Then, each first rope 29 is connected from the first drum 27 to the first sea side guide sheave 40, the first guide sheave 31a, the first lifting operation sheave 35, the first
Guide sheave 31b, lifting guide sheave 33a,
Lifting operation sheave 37, lifting guide sheave 33b,
After passing through the first land side guide sheave 42 in sequence, it is fixed 44 to the rear end portion of the girder 3, and each second rope 30 is connected from the second drum 28 to the second sea side guide sheave 41 and the second guide sheave. 32a, second lifting sheave 36, second guide sheave 32b, opening/closing guide sheave 34a, second opening/closing sheave 39
a, the first opening/closing sheave 38, the second opening/closing sheave 39b, the opening/closing guide sheave 34b, and the second land-side guide sheave 43 are passed through in this order, and then fixed 45 to the rear end portion of the girder 3.

Therefore, in a state in which the second hanging tool 10 is held in such a manner that it cannot be raised or lowered and cannot be opened or closed by the second and third lock mechanisms to be described later, the ropes 29 and 30 cannot be fed out or wound up from the drums 27 and 28. By doing this simultaneously, the first hanging tool 9 can be raised and lowered. In addition,
Each rope 29, 30 portion between the drums 27, 28 and the sea side sheaves 40, 41 is connected to guide sheaves 49a..., 4 provided on the girder 3 or boom 4.
Supported by 9a...

In addition, the first hanging device 9 is a first locking mechanism 4 which will be described later.
6, the first ropes 29, 29 are fed out and wound up from the first drum 27, and the second rope 3 is fed from the second drum 28.
By performing the feeding and winding of 0 and 30 at the same time or individually, the grab bucket 10, which is the second hanging tool, is
can be raised and lowered or opened and closed. The opening movement of the grab bucket bag 10 is performed by letting out the second ropes 30, 30 to open the space between the upper and lower blocks 10a, 10b.

In addition, during the lifting operation, the first and second drums 27 and 28 are electrically driven in synchronization, thereby stabilizing the lifting and lowering postures of each of the hanging tools 9 and 10. It is planned.

The first traversing trolley 7 and the first hanging beam 9
A first locking mechanism 46 that locks the hanging beam 9 so that it cannot be raised or lowered is interposed between the two. This first
As shown in FIG. 5, for example, the locking mechanism 46 has annular fixing portions 7b and 9a protrudingly provided on opposing surfaces of the trolley frame 7a and the hanging beam 9, so that when the hanging beam 9 is brought to the highest position, both annular fixing part 7b,
By inserting and engaging the fixing pin 47 into 9a, the hanging beam 9 can be fixedly held so that it cannot be raised or lowered. The fixing pin 47 may be inserted or removed manually or automatically, and a shock absorbing buffer 48 is interposed between the trolley frame 7a and the suspension beam 9 on opposing surfaces.

Further, the second traversing trolley 8 and the grab bucket cart 10 are interposed with a second lock mechanism that locks the grab bucket cart 10 so that it cannot be raised or lowered, and a third lock mechanism that locks it so that it cannot be opened or closed. Although these locking mechanisms are not shown, the second locking mechanism is located between the frame of the second traversing trolley 8 and the upper block 10a of the grab bucket 10, and the third locking mechanism is located between the grab bucket 10.
A mechanism similar to the first lock mechanism 46 is interposed between the upper and lower blocks 10a and 10b, respectively.

The bulk cargo discharging device 12 consists of a hopper 50 attached to a pedestal 1 and an in-machine conveyor 52 connected to the lower end of the hopper 50 via a feeder 51.
2 to a ground conveyor 53 installed directly below the conveyance end portion.

If you have the above configuration, do the following:
Non-bulk cargo or bulk cargo such as containers can be handled.

That is, when unloading the container 54 from the berthed ship 5, first, as shown in FIG. The third lock mechanism locks the door so that it cannot be raised or lowered and cannot be opened or closed. At this time, each sheave 33a, 33b, 34a, 34b, 37, 38, provided on the second traversing trolley 8 and the grab bucket 10,
39a and 39b are fixed at fixed positions and function as fixed sheaves that guide the respective lifting device operating ropes 29 and 30.

Then, the first traversing trolley 7 is made to traverse on the ship 5, and the two hoisting device operating drums 27, 28 are driven in synchronism to let out and wind up the first and second ropes 29, 30, so that the hoisting beam 9 is raised and lowered to lift the container 54 (as shown by solid lines in FIG. 1).

Thereafter, the first traversing trolley 7 is traversed to above the container transportation trailer 11, and the hanging beam 9 is lowered in the same manner as described above, and the container 54 is unloaded onto the trailer 11 (as shown by the chain line in the figure).

When unloading bulk cargo 55 from the berthing vessel 5, first the first traversing trolley 7 is stopped and held at the sea side end of the traversing rail 6, and the hanging beam 9 is It is locked by the first lock mechanism 46 so that it cannot be raised or lowered. At this time, each sheave 31a, 31b, 32a, 32b, 35 provided on the first traversing trolley 7 and the hanging beam 9,
36 is fixed at a fixed position and functions as a fixed sheave that guides each hoist operating rope 29, 30.

Then, the second traversing trolley 8 is made to traverse on the ship 5, and both hoisting device operating drums 27, 28 are driven simultaneously or independently, and the first and second ropes 29,
By letting out and winding up the grab bucket 10, the grab bucket 10 is raised, lowered, opened and closed, and the bulk cargo 55 is lifted. (Solid line diagram in Figure 2).

After that, the second traveling trolley 8 is moved to the hopper 50.
After traversing to the top, the grab bucket cart 9 is lowered and opened in the same manner as described above, and the bulk cargo 55 is supplied to the hopper 50 (as shown by the chain line in the figure).

The containers 54 and bulk cargo 55 are loaded in the same manner as described above.

Note that the present invention is not limited to the above-mentioned embodiments, and can be applied to all types of cranes equipped with transverse trolleys, such as semi-rope trolley type cranes, in addition to the above-mentioned rope trolley type bridge cranes. Moreover, each hanging device is not limited to a hanging beam and a grab bucket.

[Effect of idea]

As can be easily understood from the above explanation, the multipurpose crane of the present invention has both the functions of the former conventional crane and the latter conventional crane, so it can efficiently load both non-bulk and bulk cargo. It can be loaded and unloaded, and has extremely practical value as it can fully meet recent demands.

Moreover, each hanging tool itself is no different from a normal hanging tool, and the drum and rope used to operate each hanging tool are shared, so even though they have two different functions, , there are no structural problems such as the structure not being unnecessarily complicated, and it can be easily put into practical use.

[Brief explanation of drawings]

Figures 1 to 5 are schematic diagrams showing an embodiment of the multi-purpose crane according to the present invention. Figure 1 is a side view of the rope trolley type bridge crane showing the container unloading state, and Figure 2 is a side view of the rope trolley type bridge crane. 3 is a side view of the same crane showing the state of unloading bulk cargo, FIG. 3 is a perspective view showing the trolley traverse operating device, FIG. 4 is a perspective view showing the hoisting device operating device, and FIG. 5 is the first lock mechanism. FIG. 4... Girder (crane frame to which the lifting equipment operating rope is fixed), 6... Traversing rail (traversing route),
7...First traversing trolley, 8...Second traversing trolley, 9...Hanging beam (first hanging tool), 10...Grab bucket (second hanging tool), 11...Container transportation trailer, 12...Rose Cargo unloading device, 14... Trolley traversing operating device, 26... Hanging tool operating device, 2
7...First drum, 28...Second drum, 29...
...First rope, 30...Second rope, 31a, 3
1b...first guide sheave, 32a, 32b...
2nd guide sheave, 33a, 33b...lifting guide sheave, 34a, 34b...opening/closing guide sheave, 35...first lifting operation sheave, 36...second
Lifting operation sheave, 37... Lifting operation sheave, 38
...First opening/closing sheave, 39a, 39b...Second opening/closing sheave, 46...First lock mechanism, 5
4... Container (non-bulk cargo), 55... Bulk cargo.

Claims (1)

[Scope of utility model registration request] The crane frame is provided with first and second traversing trolleys that independently traverse on a predetermined traversing route, and is provided with first and second drums for feeding and winding the first and second ropes, respectively. A first traversing trolley is provided with a first hanging device for non-bulk cargo that is lifted and lowered by first and second ropes, and a second traversing trolley is equipped with a first hanging device for lifting and lowering by the first rope and opened and closed by a second rope. A second hanging device for bulk cargo is provided, a first locking mechanism capable of locking the first hanging device so that it cannot be raised or lowered is interposed between the first traversing trolley and the first hanging device, and the second traversing trolley and A second locking mechanism is interposed between the second hanging device and the second hanging device to lock the second hanging device so that it cannot be lifted or lowered, and a third locking mechanism is provided on the second hanging device to lock the second hanging device so that it cannot be opened or closed. Yes, first
The rope runs from the first drum to the first guide sheave provided on the first traversing trolley and the first rope provided on the first hanging device.
It passes through the lifting operation sheave, the lifting guide sheave provided on the second traversing trolley, and the lifting operation sheave installed on the second hoist, and is fixed to the crane frame,
The second rope is connected from the second drum to a second guide sheave provided on the first traversing trolley, a second elevating sheave provided on the first hanging device, an opening/closing guide sheave provided on the second traversing trolley, and a second lifting device. A multi-purpose crane characterized in that the crane is fixed to a crane frame through successive opening/closing sheaves provided in the crane frame.