JP2004010308A - Hoisting device of garbage crane bucket and picking up method of garbage on inclined surface using hoisting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently pick up garbage on an inclined surface without causing an excess tension. <P>SOLUTION: In this hoisting device of a garbage crane bucket loaded on an overhead traveling crane, hoisting a wire rope 6a connected on right and left of the garbage crane bucket 7 around separate hoisting drums 1A, 1B and ascending and descending the garbage bucket 7 with balancing right and left, driving of the separate hoisting drums 1A, 1B is performed by respectively independent driving means 2a, 2b. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
[Industrial applications]
The present invention relates to a refuse crane bucket hoisting device used in a refuse incineration facility and a method for gripping dirt on an inclined surface using the hoisting device.
[0002]
[Prior art]
As shown in FIG. 4, a refuse input hopper 22 is installed in the refuse incinerator 21, and refuse to be incinerated is mounted on a refuse crane that runs on the ceiling of the building where the refuse input hopper 22 is installed. The collected waste crane bucket (hereinafter simply referred to as a bucket) transports the waste from the waste collection location to the waste input hopper 22 and throws it therein.
[0003]
Then, the refuse 24 put into the refuse input hopper 22 is pushed out onto a grate 25 of the incinerator 21 by a refuse supply device 23 provided at the bottom of the refuse input hopper 22 and incinerated.
[0004]
As shown in FIG. 5, a garbage crane bucket 31 for charging garbage 24 into the garbage charging hopper 22 has a bucket girder 32 suspended by a garbage crane via a wire rope, and a bucket girder. -32, a pair of pins 33a and 33b provided in parallel at a fixed distance to the left and right, grippers 34a and 34b rotatably connected to the pair of pins 33a and 33b, respectively, An opening / closing mechanism (not shown) for rotating the claws 34a and 34b in a direction to close or open each other.
[0005]
The lifting and lowering of the bucket 31 is carried out by hoisting and lowering four wire ropes 35 connected to the four corners of a bucket girder 32 of the bucket by a dust crane hoisting device. FIG. 6 shows the hoisting device. FIG. 6A is a plan view of the hoisting device, and FIG. 6B is a front view of the hoisting device.
[0006]
In FIG. 6, 41 is a hoisting motor, 42 is a hoisting brake, 43 is a hoisting reducer, 44 and 45 are hoisting drums, and 46 is a pulse transmitter. Two wire ropes 35 connected to the gripping claw 34a of the bucket are wound on the hoisting drum 44, and two wire ropes connected to the gripping claw 34b of the bucket are wound on the hoisting drum 45. When the bucket is moved up and down, the two wire ropes on the same gripping claw side can be moved up and down at the same speed. This is to prevent the bucket from twisting (rotating) due to the different lifting speeds of the two wire ropes on the same gripping claw side.
[0007]
These hoisting devices are installed on a crane trolley 46 and a load detector (load cell) 48 is provided between the trolley 46 and the hoisting device. Are attached to the four corners, and output a signal indicating how many tons of dust the bucket 31 has caught. In FIG. 6, reference numeral 47 denotes a traversing wheel for moving the traversing carriage 46 and the hoisting device.
[0008]
When the hoisting motor 41 is driven, the rotation is carried out via the hoisting speed reducer 43 to simultaneously rotate the hoisting drums 44 and 45 in opposite directions. When winding up, the hoisting drum 44 and the hoisting drum 45 rotate so as to wind the wire rope 35 inward, and when hoisting down, the hoisting drum 44 and the hoisting drum 45 rotate. , Respectively, so as to rewind the wire rope 35 outward.
[0009]
When the garbage 24 is grasped by the bucket 31, the wire rope 35 is lowered by the above-described hoisting device, and the bucket 31 lands on the hill of the garbage 24. The grasping claws 34a and 34b are closed, and the dust 24 is grasped.
[0010]
Note that the landing of the bucket 31 is performed when the load detector 48 detects a value equal to or less than the weight of the bucket 31, that is, when the tension is not applied to the wire rope 35 and the bucket 31 lands. Detect and judge 35 sagging moments.
[0011]
Then, the bucket 31 is raised to a predetermined height, the bucket 31 is moved to the refuse input hopper 22, the grasping claws 34 a and 34 b of the bucket 31 are opened by the opening and closing mechanism, and the refuse 24 is input into the input hopper 22.
[0012]
[Problems to be solved by the invention]
There are the following problems when catching refuse with the above-described conventional refuse bucket.
[0013]
Waste before being incinerated in an incinerator is stored in a concrete waste pit provided in the incineration plant, but the pile of stored waste is not always flat, and especially when the waste is transported from outside. The pile of garbage near the incoming garbage truck that throws garbage into the garbage pit is in an inclined state.
[0014]
FIG. 7 is a diagram showing a procedure from landing of the bucket on the inclined garbage pile as described above until the garbage is caught. FIG. 7A shows that the hoisting drums 44 and 45 of the hoisting device described above are rotated in the directions of the arrows to rewind the wire ropes 35a and 35b wound on the respective hoisting drums. This shows a state immediately before the bucket 31 with the gripping claws 34a and 34b opened is landed on a pile of garbage.
[0015]
FIG. 7B shows a state in which the grasping claw 34a lands on the mountain side of the garbage 24 and the grasping claw 34b is about to land on the valley side of the garbage 24. In order to grasp the refuse 24 with the bucket 31, it is necessary to completely land the bucket 31, make both crawls bite into the pile of the refuse 24 by its weight, and then close the grasping claws. Even if the grasping claws are closed in a state where they are not completely landed, a predetermined amount of dust 24 cannot be grasped.
[0016]
With the gripping claw 34a landing, the wire ropes 35a and 35b are further rewound to further land the gripping claw 34b, so that the wire rope 35a on the gripping claw 34a side which has already landed is shown in FIG. (Slack portion is indicated by A) as shown in FIG.
[0017]
When the wire ropes 35a and 35b are further rewound in order to grasp the refuse 24 by a predetermined amount, as shown in FIG. 7 (c), the bucket 31 moves until the landing signal from the load detector 48 is output. , And slide down to the valley side along the slope of the mountain of garbage 24. For this reason, the slack wire rope 35a is suddenly pulled, and a large tension is generated in the wire rope 35a.
[0018]
If the bucket 31 is moved up and down every day by the conventional hoisting device, the above-mentioned tension acts repeatedly, and the life of the wire rope is significantly reduced, and the possibility of cutting near the connection with the bucket increases. Come. Further, since the bucket 31 slides down, the work efficiency also decreases.
[0019]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems of the prior art, and even if a slope is formed on a refuse mountain, repeated tension acts on a wire rope suspending a bucket. It is an object of the present invention to provide a refuse buckle bucket hoisting device which improves the work efficiency because the bucket does not slide down on the inclined surface.
[0020]
[Means for Solving the Problems]
The garbage crane bucket hoisting device according to the present invention winds wire ropes mounted on an overhead traveling crane and connected to left and right sides of the garbage crane bucket on separate winding drums. In a garbage crane bucket hoisting apparatus for raising and lowering while maintaining the right and left balance, the separate winding drums are driven by independent driving means.
[0021]
The garbage crane bucket hoisting device according to the present invention can independently wind the wire ropes connected to the left and right of the garbage crane bucket. Also, the left and right gripping claws of the garbage crane bucket can be landed according to the inclination of the inclined surface.
[0022]
Also, the inclined surfaces can be leveled by tilting the left and right gripping claws of the garbage crane bucket so that the inclined surfaces are opposite to the inclined surfaces of the dust.
[0023]
In addition, the method for grabbing dirt on an inclined surface according to the present invention is to grab dirt in the following steps (1) to (4).
(1) The height of the gripping claw located on the mountain side and the gripping claw located on the valley side are the same height until the gripping claws of the dust crane bucket located on the mountain side of the inclined surface land on the inclined surface. Step of lowering the wire rope of the garbage crane bucket while holding the wire rope, and stopping the lowering of the wire rope on the grip claw side located on the mountain side when the grip claw located on the mountain side lands on the inclined surface. .
(2) In the state where the lowering of the wire rope on the gripping claw side located on the mountain side is stopped, the valley side is reached until the gripping claws of the garbage crane bucket located on the valley side of the inclined surface land on the inclined surface. Step of lowering the wire rope on the side of the gripping claw located at the position shown in FIG.
(3) The wire rope on the gripping claw side located on the valley side where the landing is wound up, and at the same time, the gripping claw located on the mountain side is bitten into the garbage pile, and the operation of closing the gripping claw is also used in combination with the inclined surface of the dust. (4) After the dust is almost flat, balance the wire ropes on the mountain side and the valley side, close both gripping claws to grasp the dust, and roll up the dust crane bucket Process.
[0024]
In the method for grabbing dirt on the inclined surface according to the present invention, the dirt is grabbed in the above steps (1) to (4), so that the bucket slides down the inclined surface of the dirt mountain and is large in the slack wire rope. Since no tension is generated, the life of the wire rope can be extended.
[0025]
In addition, since the dust crane bucket does not slide down along the inclined surface, the work efficiency of the task of picking up dust is improved.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. 1A and 1B are explanatory views of a hoisting device for a garbage crane bucket according to the present invention, wherein FIG. 1A is a plan view of the hoisting device, and FIG. It is a front view of a negative bucket.
[0027]
In the figures, 1A and 1B are hoisting drums, 2a and 2b are hoisting motors, 3a and 3b are reduction gears, 4a and 4b are hoisting brakes, 5a and 5b are pulse generators, and 6a and 6b are wire-wrappers. Reference numeral 7 denotes a bucket, 8 denotes a bucket guarder, 9a and 9b denote bucket gripping claws, 10a and 10b denote load detectors (load cells).
[0028]
In this hoisting apparatus, of the wire ropes suspending the bucket girder 8 of the bucket 7, a wire rope 6a on the side close to the left gripping claw 9a (only one wire rope is shown in FIG. In practice, two winding drums 1A are wound up at regular intervals in a direction perpendicular to the drawing, and a wire rope 6b (similar to the wire rope 6a) on the side close to the right gripper 9b. And two winding drums 1B) for winding up and lowering each of them.
[0029]
The hoisting device will be described in detail. The hoisting drum 1A is rotated by driving the hoisting electric motor 2a and transmitting the rotation via the hoisting speed reducer 3a.
Since the hoisting motor 2a can rotate forward and reverse, the hoist drum 1A can be rotated forward and reverse to hoist and lower the wire rope 6a. Further, the crane bucket 7 can be held at an arbitrary height by the hoisting brake 4a.
[0030]
The hoist drum 1B is rotated by driving the hoist electric motor 2b and transmitting the rotation via the hoist reducer 3b. Since the hoisting motor 2b can rotate forward and reverse, the hoist drum 1B can be rotated forward and reverse to hoist and lower the wire rope 6b. Further, the bucket 7 can be held at an arbitrary height by the hoisting brake 4b.
[0031]
FIG. 2 is a control system diagram of the hoisting device of the present invention described above. A signal from an internal inclination angle sensor 11 mounted inside a bucket girder of the bucket 7, a signal from a pulse transmitter 5a for detecting the length of a wire rope 6a of a hoisting drum 1A, a wire rope of a hoisting drum 1B. A signal from the pulse transmitter 5b for detecting the length of the loop 6b and a load signal from the load detectors 10a and 10b are sent to the system control panel 12 of the refuse crane.
[0032]
Then, based on a signal from the internal inclination angle sensor 11, the inclination state of the bucket 7 is grasped, which of the hoisting drums 1A and 1B is to be rotated is determined, and the hoisting motor 2a or 2b The necessary instructions are given.
[0033]
At the same time, the feeding lengths of the left and right wire ropes 6a and 6b are grasped by signals from the pulse transmitters 5a and 5b, and control such as stopping winding and switching of the rotating drum is performed.
[0034]
Next, a method of using the above-described hoisting device to grab dust with the bucket 7 from a pile of dust on which an inclined surface is formed will be described with reference to FIG.
(1) As shown in FIG. 3A, when the gripper 9a on the mountain side lands on the garbage mountain 100 (when the load signals of the load detectors 10a and 10b become lighter than the weight of the bucket 7). At the time of detection, the rotation of the hoist drum 1A in the lowering direction is stopped to prevent the wire rope 6a from sagging.
(2) As shown in FIG. 3B, even after the rotation of the hill-side hoisting drum 1A in the lowering direction is stopped, the rotation of the valley-side hoisting drum 1B in the lowering direction is continued. The grip 9b on the valley side lands on the garbage pile 100, and the rotation of the hoisting drum 1B in the lowering direction is stopped.
(3) As shown in FIG. 3 (c), the winding drum 1B on the valley side is rotated in the hoisting direction, and the wire rope 6b on the side of the gripping claw 9b located on the valley side where the valley is landed is wound up.
(4) At the same time, the operation of breaking the refuse 100 is performed together with the operation of closing the gripping claws, and the inclined surface of the refuse 100 is leveled as shown in FIG.
(5) After the dust is flattened, the top and bottom wire ropes 6a and 6b
After the balance has been achieved, the grips 9a and 9b are closed, the dust is gripped, and the crane bucket 7 is wound up.
[0035]
【The invention's effect】
According to the present invention, since the bucket does not slide down the inclined surface of the refuse mountain and excessive tension is not generated in the slack wire rope, the life of the wire rope of the refuse crane bucket is extended and the refuse is removed. The work efficiency of the grabbing work is also improved.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a hoisting device for a garbage crane bucket according to the present invention, wherein (a) is a plan view of the hoisting device, and (b) is refuse to be taken up by a hoisting drum of the hoisting device. It is a front view of a crane bucket.
FIG. 2 is a control system diagram of the hoisting device of the present invention.
3 (a) to 3 (d) are views showing the steps of a method for grabbing dirt on an inclined surface according to the present invention.
FIG. 4 is a configuration diagram showing a configuration of a refuse incinerator.
FIG. 5 is a front view of a garbage crane bucket.
FIG. 6 is an explanatory view of a conventional hoisting device for a garbage crane bucket, wherein (a) is a plan view of the hoisting device and (b) is a front view of the hoisting device.
7 (a) to 7 (c) are views showing steps of a conventional dirt grabbing method for an inclined surface.
[Explanation of symbols]
1A, 1B Hoisting drums 2a, 2b Hoisting motors 3a, 3b Reduction gears 4a, 4b Hoisting brakes 5a, 5b Pulse generators 6a, 6b Wire rope 7 Dust crane bucket 8 Suspension members 9a, 9b Grasp Claws 10a, 10b Load detector 11 Internal inclination angle sensor
12 System control panel

Claims (2)

Winding a garbage crane bucket loaded on an overhead traveling crane and winding the wire ropes connected to the left and right of the garbage crane bucket on separate winding drums and raising and lowering the garbage bucket while maintaining the left and right balance. In the upper apparatus, the separate winding drums are driven by independent driving means, respectively. A method for picking up dirt on an inclined surface using the garbage crane bucket hoisting device according to claim 1, wherein the dirt is picked up in the following steps (1) to (4). How to grab garbage.
(1) The gripping claws of the garbage crane bucket located on the mountain side of the inclined surface,
Until landing on the inclined surface, the wire rope of the garbage crane bucket is lowered while maintaining the height of the gripping claw located on the mountain side and the gripping claw located on the valley side at the same height, and is positioned on the mountain side. Stopping the lowering of the wire rope on the side of the gripping claw located on the mountain side when the gripping claw touches the inclined surface.
(2) In the state where the lowering of the wire rope on the gripping claw side located on the mountain side is stopped, the valley side is reached until the gripping claws of the garbage crane bucket located on the valley side of the inclined surface land on the inclined surface. Step of lowering the wire rope on the side of the gripping claw located at the position shown in FIG.
(3) The wire rope on the gripping claw side located on the valley side where the landing is wound up, and at the same time, the gripping claw located on the mountain side is bitten into the garbage pile, and the operation of closing the gripping claw is also used in combination with the inclined surface of the dust. (4) After the dust is almost flat, balance the wire ropes on the mountain side and the valley side, close both gripping claws to grasp the dust, and roll up the dust crane bucket Process.

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