KR102557059B1 - How to operate the new bridge-type unloading machine - Google Patents

Abstract

The present invention relates to a novel bridge-type unloader operating method and belongs to the field of harbor bridge-type grab unloader operating technology. The technical solution is to determine the grabbing position of the grab 2 according to the height of the bulk cargo in the cabin 1, move the position of the trolley 8 to control the direction of the grab 2, and Grabbing starts from the first layer, first grabs the odd-numbered rows of cargo, then grabs the even-numbered rows of cargo, first artificially turns the even-numbered rows into salient rows, and then grabs the even-numbered rows of cargo on the first and second layers. grabbing, and before grabbing all the cargoes in even rows, the odd rows are also formed as protruding rows; By operating in this way, the grabbing operation of the bulk cargo in the cabin (1) is completed. The positive effect of the present invention is that the engagement is hard, safe and highly efficient, and the loading efficiency can be improved by maximizing the function of the mechanical equipment.

Description

How to operate the new bridge-type unloading machine

The present invention relates to a method for operating a novel bridge-type unloader, and belongs to the art of operating a harbor bridge-type grab unloader.

The bridge-type grab unloading machine is the main equipment for loading and unloading bulk cargo at the port. Its mature technology, high efficiency, and high degree of automation are in line with "large wharf, large equipment, high efficiency, and high automation". Like the idea of modern piers becoming more and more favored in modern piers. Scientific and reasonable equipment operation technology makes maximum use of the interlocking function of each mechanism of equipment, saves operating time, improves work efficiency, and maximizes corporate profits. The existing operating procedure for prior art bridge-type grab unloaders is as follows: 1. Move the grab horizontally from the top of the hopper to the top of the cabin. 2. The grab is lowered into the cabin and rests on the cargo surface. 3. Close the grab and complete the cargo extraction. 4. The grab is lifted above the hopper level. 5. Move the grab just above the hopper. 6. Open the grab to complete unloading. 7. Transport the cargo to the downstream belt conveyor by the vibratory feeder. However, the above operation does not save the operation time with each interlocking function of the bridge type grab unloader to the maximum limit, and increases the deceleration time of the grab horizontal and vertical, resulting in lower work efficiency and reduced economic benefits of the enterprise.

The object of the present invention is to save operating time with the maximum interlocking function of a bridge-type grab unloading machine, to make the engagement of each part hard, to have a scientific and innovative idea, to operate safely and efficiently, and to maximize unloading efficiency. It is to provide a method of operating a novel bridge-type unloader that can be improved to the limit and solves the above-mentioned problems existing in the background art.

The technical solution of the present invention is as follows.

In the operation method of the novel bridge-type unloader, the bridge-type unloader includes a trolley, a grab, a cargo receiving plate, a unloader body, a hopper, a vibratory feeder, and a belt conveyor drop port, It is located on the sea and is matched with the position of the cabin on the sea, and the operating steps are as follows.

① The bulk cargo in the cabin is divided into several rows, each row is sequentially divided into 7 equal-sized areas of A, B, C, D, E, F and G, and each row is divided into several floors. do.

② The trolley operates the grab while moving to one side of the seashore, and starts descending at full speed when the grab exceeds the cargo receiving plate and enters the cabin.

③ According to the height of the bulk cargo in the cabin, determine the grabbing position, move the trolley to control the direction of the grab, start grabbing from the first floor of the first row, first grab the odd-numbered rows of cargo Ice and grab the cargo in the next even row, first artificially turn the even row into a salient row, then grab the cargo in the first and second layers of the even row, and grab the cargo in the even row before grabbing all the cargo in the odd row. also formed by protruding rows; It is operated in this way to complete the grabbing operation of bulk cargo in the cabin.

In the case of grabbing bulk cargo in any one row in the cabin, the grab is controlled to grab the bulk cargo in area D of the row first, and the grab is controlled again to grab the bulk cargo in area B and F of the row, After completion of grabbing, since the height of the bulk cargo in areas A, C, E and G of the row is higher than that of the bulk cargo in areas B, D and F of the row, the grab is controlled again to control the grab of the row A, B, C, Bulk cargoes in areas A, C, E and G of the row are sequentially grabbed until the bulk cargo heights of 7 areas D, E, F and G coincide.

In the process of grabbing the bulk cargo with the grab, the grab is operated, and when the grab is operated to the vicinity of the horizontal surface of the cabin hatch, the grab stops descending and the closing action is started at a position 2 m away from the surface of the bulk cargo. The grab lowering and stopping action may be delayed somewhat, and if the lowering handle is stopped in advance, the wire cable will not unwind much when the grab is placed on the bulk cargo surface, and it will also be delayed when the grab is closed, and the two paragraphs will be delayed polymerization. Sufficient time is used to close the grab when it reaches the bulk load surface to perform the action of grabbing the load.

In the process of the grab grabbing the bulk cargo and then returning to the trolley, the grab is closed and the trolley is moved to the center of the center plane of the cabin and the grab, and when the lifting operation of the grab starts, the grab moves to the center of the cabin window. At this time, the trolley reaches the center of the cabin according to the inertia of the grab operation, and when the grab moves in the direction of the trolley and reaches the root part of the cargo receiving plate, the grab moves directly above the hopper and lifting of the grab It stops and the grab opens to complete loading and unloading. Finally, the bulk cargo is conveyed to the downstream belt conveyor by vibratory feeders. At the same time, the trolley travels to one side of the seashore, performs the grabbing operation of the next step, and unloading is performed using the time zone of the trolley delay operation.

The present invention abandons the operation method of the existing bridge-type grab unloader and improves the innovation from the two major aspects of equipment operation technology and cargo grabbing technology, the technology is skilled, the operation is scientific, and the operation method is safe and highly efficient. To summarize, greatly improve economic benefits.

The present invention saves operating time by using the interlocking function of the bridge-type grab unloader to the maximum extent. After the grab leaves the cargo receiving plate, it begins to descend in a parabolic fashion and drops directly to the cargo surface after entering the cabin. After leaving the cabin, it returns to the upper part of the hopper along the parabola again. This operation cycle can be summarized as “quick entry, accurate inspection, tight grab closure, stable take-out”, which saves unnecessary grab horizontal and vertical deceleration time and improves work efficiency.

The core of the present invention is to take a reasonable cargo grabbing technology according to the different types of ships and cargo characteristics, thereby improving single grabbing quality and improving work efficiency.

The positive effect of the present invention is that the engagement is hard, safe and highly efficient, and the loading efficiency can be improved by maximizing the function of the mechanical equipment.

1 is a schematic diagram of a grab operation process according to the present invention.
2 is a schematic view of carrying out the grab according to the present invention.
3 is a schematic diagram of classifying bulk cargo areas in a cabin according to an embodiment of the present invention.

The present invention will be described in more detail with reference to the drawings and examples below.

In the operating method of the new bridge-type unloader, the bridge-type unloader includes a trolley (8), a grab (2), a cargo receiving plate (3), a unloader body (4), a hopper (5), a vibrating feeder (6) and a belt conveyor. It includes a drop port (7), the trolley is located on land at the shore of the pier, and is matched with the position of the cabin (1) on the sea, and the operation steps are as follows.

① The bulk cargo in the cabin (1) is divided into several rows, and each row is sequentially divided into 7 areas of the same size, all of which are A, B, C, D, E, F and G, and each row is divided into several Divide into layers.

② The trolley (8) operates the grab (2) while moving to one side of the seashore, and starts descending at full speed when the grab (2) exceeds the cargo receiving plate (3) and enters the cabin (1).

③ According to the height of the bulk cargo in the cabin (1), the grabbing position of the grab (2) is determined, the direction of the grab (2) is controlled by moving the position of the trolley (8), and the direction of the grab (2) is controlled from the first floor of the first row. Start grabbing, first grab the odd-numbered rows of cargo, then grab the even-numbered rows of cargo, first artificially change the even-numbered rows into salient rows, then grab the even-numbered rows of cargo on the first and second layers, , before grabbing all of the even-numbered rows of cargo, the odd-numbered rows are also formed into extruded rows. By operating in this way, the grabbing operation of the bulk cargo in the cabin (1) is completed.

In the case of grabbing bulk cargo in any one row in the cabin, the grab is controlled to grab the bulk cargo in area D of the row first, and the grab is controlled again to grab the bulk cargo in area B and F of the row, After completion of grabbing, since the height of the bulk cargo in areas A, C, E and G of the row is higher than that of the bulk cargo in areas B, D and F of the row, the grab is controlled again to control the grab of the row A, B, C, Bulk cargoes in areas A, C, E and G of the row are sequentially grabbed until the bulk cargo heights of 7 areas D, E, F and G coincide.

In the process of grabbing bulk cargo with the grab, when the grab is operated and the grab is operated to the vicinity of the horizontal surface of the hatch of the cabin (1), the grab stops descending and closes at a distance of 2 m from the surface of the bulk cargo. It begins. The grab lowering and stopping action may be delayed somewhat, and if the lowering handle is stopped in advance, the wire cable will not unwind much when the grab is placed on the bulk cargo surface, and it will also be delayed when the grab is closed, and the two paragraphs will be delayed polymerization. Sufficient time is used to close the grab when it reaches the bulk load surface to perform the action of grabbing the load.

In the process of the grab grabbing the bulk cargo and returning to the trolley, the grab 2 is closed and the trolley 8 is moved to the center of the center plane of the grab 2 and the cabin 1, When the lifting action starts, the grab swings toward the center position of the hatch in the cabin (1), and at this time, the trolley reaches the center position of the cabin according to the inertia of the grab action, the grab moves in the direction of the trolley, and the grab (2) moves toward the cargo receiving plate (3). When reaching the root part of ), the grab is moved directly above the hopper 5, lifting of the grab is stopped, and unloading is completed as the grab is opened. Finally, the bulk cargo is transported to the downstream belt conveyor by vibratory feeders (6). At the same time, the trolley travels to one side of the seashore, performs the grabbing operation of the next step, and unloading is performed using the time zone of the trolley delay operation.

The operating technique of the present invention is as follows.

Quick entry: The trolley pulls the hopper out to one side of the waterfront, and starts descending at full speed when the grab exceeds the cargo receiving plate and enters the cabin (if the height of the ship itself increases when cleaning the cabin, timing the descent appropriately Adjustments must be made (the higher the hull, the slower the descent timing). While the grab is running, it forms a parabolic hold down line, so that the trolley travels to one side of the seashore and the descending of the grab is converged to shorten the travel time.

Accurate Check: When the grab is driven close to the horizontal plane of the cabin hatch, the optimal location for this cargo grabbing must be determined. After understanding the height of the bulk cargo surface, move the trolley position to control the direction of the grab, accurately find the timing of the descent of the grab, the check is accurate, and the entire operation is completed at once, so that the grab enters the cabin, then stops and loads again. effectively prevent the initiation of grabbing. In the case of grabbing cargo, insufficient loading of the grab must be prevented in order to improve work efficiency. Since the opening and closing of the wire cable is lifted by the same amount at the same time, it is necessary to keep the grabs in a state of balance on the left and right as much as possible to ensure that relatively more cargo is grabbed, and also, the higher the cargo in the middle of the two grab flaps, the more It can grab a lot of cargo.

Close grab closing: When the grab is 2 m from the surface of the load, the lowering action is stopped and the closing action of the grab is initiated. The grab lowering and stopping action may be delayed a little, and if the lowering handle is stopped in advance, the wire cable will not unwind much when the grab is placed on the cargo surface, and also delayed when the grab is closed, the time when the two delays overlap. is used sufficiently to close the grab when the grab reaches the bulk cargo surface to perform the action of grabbing the cargo. In addition, the four-wire cable can reduce the impact force endured by the grab and its accessory members if it is in a state of constant force, thus protecting the grab and reducing abrasion, thereby extending its life.

Stable retrieval: Closing the grab and simultaneously moving the trolley to the center position of the grab and cabin center plane, so that the grab swings toward the hatch center position before the lifting action begins, at which point the trolley's “rocking” motion is the cabin center center. Reaching the position, saving the remaining steady rocking motion and allowing the grab to safely exit from the center of the hatch, also prepares the return motion for the next step. When the grab is lifted over the hatch, it begins to prepare for the return action. It is the same as the operation when the grab enters, and the operation time can be effectively saved by interlocking the two operations of grab lifting and trolley operation. When measured by eye from the opening/closing pear head of the grab to the eaves under the cab, the trolley starts to open full speed in the direction of the hopper and at the same time rises full speed. When the grab reaches the cargo receiving plate root, the lifting is stopped and the grab is opened to lower the bulk cargo while simultaneously allowing the trolley to move to one side of the seashore. Loading and unloading is performed by sufficiently using the time zone of the trolley delay operation. The timing of trolley movement during loading and unloading is determined by the characteristics of the bulk cargo.

Referring to FIG. 3 in this embodiment, the cargo grabbing technique is as follows.

Heat exchange using gaps: eliminates the method of grabbing cargo from adjacent rows during operation, i.e. grabbing cargo from odd rows first, then cargo from even rows, rather than grabbing sequentially backwards from the first row and artificially turns the even rows into protruding rows, and grabs the cargo in the even rows again, and at this time, the odd rows are also formed into protruding rows.

Grab descent using spacing: taking the second row as an example, eliminating the grabbing method of adjacent grabs, that is, rather than grabbing from area D to both sides sequentially, first the cargo in the white area (area B, D, F) At this time, peaks are formed in the slant line areas (areas A, C, E, and G), and cargoes in the next slant line areas (areas A, C, E, and G) are grabbed.

By adopting the operation method of the present invention, the total production efficiency can be improved by 13.7% according to the applicant's equipment parameter, actual production calculation. The operation process of the present invention is scientific and reasonable, the work accident is clever and novel, and the practical application is safe and highly efficient, so that it can improve enterprise economic benefits and ensure safe production at the same time. easy.

1 : Cabin
2 : Grab
3: cargo receiving plate
4: unloader body
5 : Hopper
6: vibratory feeder
7: Belt conveyor drop port
8 : Trolley

Claims (4)

trolley (8), grab (2), cargo receiving plate (3), unloader body (4), hopper (5), vibratory feeder (6) and belt conveyor drop port (7), , The trolley is located on land along the shore of the pier, and in the operating method of the new bridge-type unloader matching the position of the cabin (1) on the sea,
① The bulk cargo in the cabin (1) is divided into several rows, and each row is sequentially divided into 7 areas of the same size of A, B, C, D, E, F and G, each row divided into several layers;
② The trolley (8) operates the grab (2) while moving to one side of the seashore, and starts descending at full speed from the time the grab (2) exceeds the cargo receiving plate (3) to reach the cabin (1). entered into;
③ According to the height of the bulk cargo in the cabin (1), the grabbing position of the grab (2) is determined, and the direction of the grab (2) is controlled by moving the position of the trolley (8), Grabbing starts from the first layer of the first row, first grabs the odd-numbered rows of cargo, then grabs the even-numbered rows of cargo, first artificially turns the even-numbered rows into protrusion rows, and then grabs the even-numbered rows of the first and second layers. Grabbing the cargo in the cabin, and operating in such a way that the odd rows are also formed as protruding rows before grabbing all the cargo in the even rows to complete the grabbing operation of the bulk cargo in the cabin (1). to be
How to operate the new bridge-type unloading machine. According to claim 1,
In the case of grabbing bulk cargo in a row in the cabin, the grab is controlled to grab the bulk cargo in area D of the row first, and the grab is controlled again to grab the bulk cargo in area B and F of the row. After completion of grabbing, since the height of bulk cargo in areas A, C, E, and G of the row is higher than that of bulk cargo in areas B, D, and F of the row, the grab is controlled again to achieve the height of bulk cargo in areas A, B, and C of the row. Characterized in that sequentially grabbing the bulk cargo in the A, C, E and G regions of the column until the bulk cargo heights of the 7 regions of D, E, F and G match.
How to operate the new bridge-type unloading machine. According to claim 1 or 2,
In the process of grabbing bulk cargo with the grab, when the grab is operated and the grab is operated to the vicinity of the horizontal plane of the hatch of the cabin (1), the grab stops descending and closes at a position 2 m away from the surface of the bulk cargo. characterized by the start of
How to operate the new bridge-type unloading machine. According to claim 1 or 2,
In the process of returning to the trolley after the grab grabs the bulk cargo, the grab 2 is closed and the trolley 8 is moved to the center of the center plane of the grab 2 and the cabin 1, and the grab When the lifting operation of starts, the grab swings toward the position of the center of the hatch of the cabin (1) and the trolley reaches the position of the center of the cabin according to the inertia of the grab operation, the grab moves in the direction of the trolley and the grab 2 moves the cargo. When reaching the root of the receiving plate (3), the grab is moved directly above the hopper (5), lifting of the grab is stopped, and unloading is completed as the grab is opened.
How to operate the new bridge-type unloading machine.