Operation method for improving operation efficiency of bridge type grab ship unloader

Abstract

The invention relates to an operation method for improving the operation efficiency of a bridge type grab ship unloader. The operation method comprises the following specific steps that S1, goods at the rear part in a cabin are grabbed; s2, goods at the front throwing part in the cabin body are grabbed; s3, goods in the middle of the interior of the cabin are grabbed; and S4, goods on the ridge formed in the cabin body are grabbed. The method has the beneficial effects that the method is simple, the full-load rate of the grab bucket can be remarkably increased, the cabin cleaning amount is reduced, the cabin cleaning time is shortened, and therefore the overall operation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of port operations, and in particular to an operating method for improving the operating efficiency of a bridge-type grab ship unloader. Background Art

[0002] The operating efficiency of the 2500t / s bridge-type ship unloader directly affects the economic benefits of port enterprises. Improving the unloading efficiency and reducing the time spent in the port are the core issues that need to be addressed in the unloading operation.

[0003] The existing bridge-type ship unloader has problems such as low efficiency, large cargo clearance volume, and long cargo clearance time during operation, which directly affects the economic benefits of port enterprises. Therefore, a new operation method that can improve operation efficiency and reduce operation costs is urgently needed.

[0004] In order to improve the operating efficiency of large-scale ship unloading machinery in ports and effectively reduce operating time and economic costs, combined with the characteristics of ship unloading operations of port enterprises, based on the technical characteristics of the "traditional operation method", the operation process and technical points of the "high-efficiency groove and ridge operation method" of the ship unloader are innovatively proposed. A comparative analysis of the operating efficiency of the "high-efficiency groove and ridge operation method" and the "traditional operation method" of the ship unloader was conducted under similar working conditions. The data analysis results show that the "high-efficiency groove and ridge operation method" of the ship unloader has great advantages in terms of grab bucket full load rate, tank cleaning volume, tank cleaning time, etc., which can effectively reduce the ship operation time and significantly improve the operation rate of the entire ship.

[0005] The "High-efficiency Groove Ridge Operation Method" of ship unloaders is an optimization and upgrade of the traditional operation method of ship unloaders. It applies the ship unloader operation technology more safely and reasonably, and has made new breakthroughs in the innovation of operation technology. The "High-efficiency Groove Ridge Operation Method" of ship unloaders has two short and two high technical characteristics, namely: shorter single bucket cycle time, shorter equipment cleaning time, higher grab bucket full load rate, and higher operation safety. The promotion and application of the "High-efficiency Groove Ridge Operation Method" of ship unloaders has a significant effect on improving the overall ship operation efficiency of ports and reducing the time ships stay in ports, providing strong support for improving port production efficiency and economic benefits. Summary of the invention

[0006] The invention provides an operating method for improving the operating efficiency of a bridge-type grab ship unloader, aiming to solve the problems in the prior art.

[0007] The technical solution of the present invention to solve the above technical problems is as follows: An operating method for improving the operating efficiency of a bridge grab ship unloader comprises the following specific steps: S1: Grab the cargo at the rear of the cabin; S2: Grab the cargo at the front of the cabin; S3: Grab the cargo in the middle of the cabin; S4: Grab the cargo at the spine formed in the cabin.

[0008] The beneficial effects of the present invention are as follows: during the grabbing process, S1: grabbing operations are performed on the cargo at the rear olive in the cabin; S2: grabbing operations are performed on the cargo at the front olive in the cabin; S3: grabbing operations are performed on the cargo in the middle part of the cabin; S4: grabbing operations are performed on the cargo at the spine formed in the cabin.

[0009] The method of the invention is simple and can significantly improve the full load rate of the grab bucket, reduce the amount of cabin cleaning, shorten the time for cabin cleaning, and thus improve the overall operating efficiency.

[0010] Based on the above technical solution, the present invention can also be improved as follows.

[0011] Further, the S1 comprises the following specific steps: S11: Firstly, the cargo at the rear center of the cabin is grabbed; S12: Grab the cargo at the two corners of the sea and land sides of the cabin.

[0012] The beneficial effect of adopting the above further scheme is that the method is simple, the design is reasonable, and the cargo in various parts of the cabin can be efficiently grabbed, thereby improving the full load rate of the grab bucket during the operation.

[0013] Further, the S11 specifically includes: The first bucket uses the principle of a semi-automatic walking cart to grab the bucket in the center of the rear olive, and then presses half the bucket to the left and right sides to grab.

[0014] The beneficial effect of adopting the above further scheme is that the method is simple, the design is reasonable, and the cargo at the rear center of the cabin can be effectively grabbed with high efficiency.

[0015] Further, in said S11: During the grabbing process, it is necessary to press half the bucket to grab, that is, the grabbing order is arranged to both sides in sequence, and the position of the half bucket is moved each time.

[0016] The beneficial effect of adopting the above further scheme is that the method is simple, the design is reasonable, and the cargo at the rear center of the cabin can be effectively grabbed with high efficiency.

[0017] Further, the S12 specifically includes: During the semi-automatic process, the large cart moves backwards in advance → the small cart moves toward the sea side → and then the large cart moves backwards quickly.

[0018] The beneficial effect of adopting the above further scheme is that the method is simple, the design is reasonable, and the cargo at the two corners of the sea and land sides of the cabin can be effectively grabbed with high efficiency.

[0019] Further, in S12: the grab bucket will form a swing angle of 45° toward the rear olive sea side.

[0020] The beneficial effect of adopting the above further scheme is that by adopting this type of operation method, the grab bucket will form a swing angle of 45° toward the rear olive sea side, so that the grab bucket can enter the expected grabbing point along with the natural swing of this angle.

[0021] Further, in S12: the position of the trolley and the actual position of the grab bucket form a vertical angle.

[0022] The beneficial effect of adopting the above further solution is that during the closing process of the grab bucket, the position of the trolley and the actual position of the grab bucket should be made to form a vertical angle as much as possible to reduce the shaking of the grab bucket.

[0023] Further, in said S12: the trolley is moved forward for a certain distance so that the grab bucket can be safely out of the cabin during the forward shaking process, and the steps for getting out of the cabin are: lifting the grab bucket → quickly stabilizing the grab bucket → stepping on the semi-automatic button → stabilizing the bucket with the trolley.

[0024] The beneficial effect of adopting the above further scheme is that the method is simple, the design is reasonable, and the grab bucket is ensured to exit the cabin quickly.

[0025] Furthermore, before S1, S0 is also included: The operators work on both sides of the sea and land in turn. After grabbing and leveling the sea and land sides, they move the trolley to move the ship unloader to the front and rear olive positions and use the same method to grab the materials in the cabin to a level state.

[0026] The beneficial effect of adopting the above further solution is that the method is simple and the traditional method is used to perform the grasping operation so as to prepare for the subsequent grasping operation.

[0027] Furthermore, before S0, the step further includes: The operator needs to first set the semi-automatic operation mode, select the appropriate grab amount according to the density of the goods, and select the highest point of the material for grabbing operations.

[0028] The beneficial effect of adopting the above further solution is that the method is simple and the traditional method is used to perform the grasping operation so as to prepare for the subsequent grasping operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a step diagram of the operating method of the present invention. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0034] Example 1 like Figure 1 As shown, this embodiment provides an operating method for improving the operating efficiency of a bridge grab ship unloader, comprising the following specific steps: S1: Grab the cargo at the rear of the cabin; S2: Grab the cargo at the front of the cabin; S3: Grab the cargo in the middle of the cabin; S4: Grab the cargo at the spine formed in the cabin.

[0035] During the grabbing process, S1: grabbing the cargo at the rear olive in the cabin; S2: grabbing the cargo at the front olive in the cabin; S3: grabbing the cargo in the middle part of the cabin; S4: grabbing the cargo at the spine formed in the cabin.

[0036] Based on the above scheme, the front and rear olives in the cabin refer to the front and rear sides of the cabin.

[0037] The method of this embodiment is simple. Adopting this method can significantly improve the full load rate of the grab bucket, reduce the amount of cabin cleaning, shorten the time for cabin cleaning, and thus improve the overall operation efficiency.

[0038] Example 2 On the basis of Example 1, in this embodiment, S1 includes the following specific steps: S11: Firstly, the cargo at the rear center of the cabin is grabbed; S12: Grab the cargo at the two corners of the sea and land sides of the cabin.

[0039] The method is simple and reasonably designed, and can efficiently grab cargo in various parts of the cabin, thereby improving the grab bucket full load rate of the operation.

[0040] Example 3 On the basis of Example 2, in this embodiment, S11 specifically includes: The first bucket uses the principle of a semi-automatic walking cart to grab the bucket in the center of the rear olive, and then presses half the bucket to the left and right sides to grab.

[0041] The method is simple and reasonably designed, and can effectively grab the cargo at the rear center of the cabin with high efficiency.

[0042] Example 4 On the basis of Example 3, in this embodiment, in S11: During the grabbing process, it is necessary to press half the bucket to grab, that is, the grabbing order is arranged to both sides in sequence, and the position of the half bucket is moved each time.

[0043] The method is simple and reasonably designed, and can effectively grab the cargo at the rear center of the cabin with high efficiency.

[0044] Example 5 On the basis of any one of Embodiments 2 to 4, in this embodiment, S12 specifically includes: During the semi-automatic process, the large cart moves backwards in advance → the small cart moves toward the sea side → and then the large cart moves backwards quickly.

[0045] The method is simple and reasonably designed, and can effectively grab the cargo at the two corners of the sea and land sides of the cabin with high efficiency.

[0046] Example 6 On the basis of Example 5, in this embodiment, in S12: the grab bucket will form a shaking angle of 45° toward the rear olive sea side.

[0047] With this type of operation method, the grab bucket will form a 45° swing angle toward the rear olive sea side, allowing the grab bucket to enter the expected grabbing point along with the natural swing of this angle.

[0048] Example 7 On the basis of any one of Embodiments 5 to 6, in this embodiment, in S12: the position of the trolley and the actual position of the grab bucket form a vertical angle.

[0049] During the grab closing process, try to keep the trolley position at a vertical angle to the actual position of the grab to reduce the shaking of the grab.

[0050] Example 8 On the basis of Example 7, in this embodiment, in said S12: the truck is moved forward for a certain distance so that the grab bucket can be safely out of the cabin during the forward shaking process, and the steps for getting out of the cabin are: lifting the grab bucket → quickly stabilizing the grab bucket → stepping on semi-automatic → stabilizing the bucket with the truck.

[0051] The method is simple and reasonably designed, and ensures that the grab bucket can be quickly ejected from the cabin.

[0052] Example 9 Based on the above embodiments, in this embodiment, before S1, S0 is also included: The operators work on both sides of the sea and land in turn. After grabbing and leveling the sea and land sides, they move the trolley to move the ship unloader to the front and rear olive positions and use the same method to grab the materials in the cabin to a level state.

[0053] The method is simple and utilizes traditional methods to perform grasping operations in order to prepare for subsequent grasping operations.

[0054] Example 10 On the basis of Example 9, in this embodiment, before S0, the following steps are further included: The operator needs to first set the semi-automatic operation mode, select the appropriate grab amount according to the density of the goods, and select the highest point of the material for grabbing operations.

[0055] The method is simple and utilizes traditional methods to perform grasping operations in order to prepare for subsequent grasping operations.

[0056] Taking the hatch size of most ships being about 16m*8m as an example, the hatch opening and unloading operation mainly includes the following steps: Step 1: The operator needs to first set the semi-automatic operation mode, select the appropriate grab amount according to the density of the goods, and select the highest point of the material for grabbing operations.

[0057] Step 2: The operators work on both sides of the sea and land (i.e. the left and right sides of the cabin) in turn, grab and level the sea and land sides, then move the trolley, move the ship unloader to the front and rear olive positions, and use the same method to grab and level the materials in the cabin.

[0058] Step 3: After grabbing and leveling, the operator uses the "efficient groove ridge operation method" of the ship unloader to grab. When grabbing the rear olive and the inner row of olives, the position of the ship ladder must be known in advance, and the distance from the ship ladder must be greater than 1 meter of safety distance. The first bucket uses the principle of a semi-automatic walking trolley to grab the bucket in the center of the rear olive, and then presses half the bucket to the left and right sides in turn to grab. During the grabbing process, it is necessary to press half the bucket to grab, that is, the grabbing order is arranged to both sides in turn, and the position of half the bucket is moved each time. The purpose of this operation method is to maintain the balance of the grab bucket so that one side of the bucket body falls on the plane. The cabin type grabbed by this method can be flat. At the same time, it has a positive effect on overload control during the grabbing process.

[0059] The entire rear olive has been grabbed, and there is very little cargo left on the rear olive. Among them, grabbing the two corners on the sea and land sides is a technical operation difficulty. Taking the sea side corner of the rear olive as an example, the operation steps include: moving the large cart to the rear olive in advance during the semi-automatic process (that is, the ship unloader moves forward and backward) → moving the small car to the sea side (that is, the small car drives the grab bucket to move left and right) → then quickly moving the large cart to the rear olive. With this type of operation method, the grab bucket will form a 45-degree shaking angle to the sea side of the rear olive, which can make the grab bucket naturally shake at this angle and enter the expected grabbing point. During this operation, the speed and distance of the small car and the large car determine the depth of the rear olive and the sea side. During the closing process of the grab bucket, the position of the trolley should be made vertical to the actual position of the grab bucket as much as possible to reduce the shaking of the grab bucket. At the same time, the large vehicle should be moved forward for a certain distance so that the grab bucket can be safely out of the cabin during the forward shaking process. The operation steps include: lifting the grab bucket → quickly stabilizing the grab bucket (stabilizing it in place at one time) → stepping on the semi-automatic operation → stabilizing the bucket with the large vehicle (during the process of leaving the cabin). So far, the complete process of using the semi-automatic operation to grab the front and rear sides has been completed. However, it should be noted during the operation that no matter which point in the grab cabin is grabbed, it must be based on not grinding the cabin wall.

[0060] Step 4: The grabbing process of the front olive is similar to that of the rear olive. The difference is that due to the angle of the cab, the front olive grabbing operation is a visual blind spot for the operator, and needs to rely on experience and auxiliary systems to operate, but the operation steps are similar and the principle is the same. However, due to the line of sight, the operator needs to confirm the position of the front olive cabin ladder to prevent accidents of bumping against the ship ladder. Using the above operation method, after the front and rear olives and the middle row are grabbed, a cabin shape with clear grooves and ridges is formed in the cabin.

[0061] Step 5: The grabbing operation at this time needs to grab the two ridges first, and adjust the grab ratio according to the characteristics of the goods during the grabbing process. Due to the flatness of the goods, the grab ratio hardly needs to be adjusted during the grabbing process, and the full load rate can be well guaranteed. After the two ridges are grabbed, the cabin is in a flat state. At this time, repeat the above grabbing order, front olive (the order of front and rear olives can be changed) → rear olive (the order of front and rear olives can be changed) → middle row → ridge. In subsequent operations, always maintain this grabbing order until the cargo in the cabin is grabbed to the bottom and reaches the lower cabin cleaning machinery.

[0062] Based on the above scheme, the data comparison results of the ship unloader's "high-efficiency ridge operation method" and "traditional operation method" are as follows: (1) Comparison of grab bucket full load rate data The “traditional operation method” and “high-efficiency ridge and trench operation method” were used to operate two groups of hold unloading operations with similar working conditions. The operation data of 10-bucket grab buckets were randomly selected in the mid-hold stage for comparative analysis. The statistical table of single bucket tonnage of “high-efficiency ridge and trench operation method” and “traditional operation method” is shown in Table 1.

[0063] Table 1 Comparison of single bucket tonnage between “traditional operation method” and “high-efficiency ridge operation method” (unit: t) According to the contents in Table 1 above, the rated grabbing tonnage of the grab is 40 tons. Through calculation, it can be known that the full load rate of the grab in the "traditional operation method" is 81%, and the full load rate of the grab in the "high-efficiency ridge operation method" is 97%, and the full load rate is increased by 16%.

[0064] (2) Comparison of cargo clearance data The “traditional operation method” and “high-efficiency ridge and groove operation method” were used to carry out hold unloading operations on 5 ships with similar working conditions. The “traditional operation method” and “high-efficiency ridge and groove operation method” were used respectively in the unloading operations of each ship. The statistical table of the hold clearing volume data of the two operation methods is shown in Table 2.

[0065] Table 2 Comparison of the clearance volume between the “traditional operation method” and the “high-efficiency ridge operation method” (unit: t) It can be seen from the statistical data in Table 2 that the amount of cargo clearance by the "high-efficiency ridge operation method" is 29% lower than that by the "traditional operation method" on average. The high-efficiency ridge operation method can ensure the full load rate while greatly reducing the amount of cargo clearance, reducing the time required for cargo clearance, improving operation efficiency and reducing cargo clearance costs.

[0066] (3) Comparison of time required for clearing the tank The “traditional operation method” and “high-efficiency ridge operation method” were used to operate the hold unloading operations of 5 ships with similar working conditions. During the unloading operation of each ship, the “traditional operation method” and “high-efficiency ridge operation method” were used to complete the operation. The statistical data of the “traditional operation method” and “high-efficiency ridge operation method” in the clearing stage are shown in Table 3.

[0067] Table 3 Comparison of time required for clearing cargo hold between “traditional operation method” and “high-efficiency ridge operation method” (unit: h) It can be calculated from the statistical data in Table 3 above that the cleaning time of the “high-efficiency ridge operation method” is 0.72 hours less than that of the “traditional operation method”.

[0068] The benefit analysis of the ship unloader "high-efficiency ridge operation method" adopted in the present invention is as follows: In the benefit accounting, the "groove and ridge efficient operation method" of the ship unloader has achieved a significant improvement in the efficiency of the whole ship unloading operation compared with the "traditional operation method", and the overall ship-hour rate has increased by 19.4%. The "groove and ridge efficient operation method" takes an average of 7.6 hours to operate in the middle-hold opening stage, while the "traditional operation method" takes an average of 9.8 hours to operate in the middle-hold opening stage; the "groove and ridge efficient operation method" takes an average of 4.54 hours to operate in the tank cleaning stage, while the "traditional operation method" takes an average of 5.26 hours to operate in the tank cleaning stage. Taking the three ship unloaders as an example for a 200,000-ton CAPE ship, the use of the ship unloader's "groove and ridge efficient operation method" can shorten the ship's operation time by 2.92 hours, and the overall ship operation rate will increase by nearly 19.4%, saving a lot of time and economic costs for port enterprises.

[0069] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0070] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An operating method for improving the operating efficiency of a bridge grab ship unloader, characterized in that: The specific steps include: S1: Grab the cargo at the rear of the cabin; S2: Grab the cargo at the front of the cabin; S3: Grab the cargo in the middle of the cabin; S4: Grab the cargo at the spine formed in the cabin.

2. The operating method for improving the operating efficiency of a bridge grab ship unloader according to claim 1, characterized in that: The S1 comprises the following specific steps: S11: Firstly, the cargo at the rear center of the cabin is grabbed; S12: Grab the cargo at the two corners of the sea and land sides of the cabin.

3. The operating method for improving the operating efficiency of a bridge grab ship unloader according to claim 2, characterized in that: The S11 specifically includes: The first bucket uses the principle of a semi-automatic walking cart to grab the bucket in the center of the rear olive, and then presses half the bucket to the left and right sides to grab.

4. The operating method for improving the operating efficiency of a bridge grab ship unloader according to claim 3, characterized in that: In the S11: During the grabbing process, it is necessary to press half the bucket to grab, that is, the grabbing order is arranged to both sides in sequence, and the position of the half bucket is moved each time.

5. The operating method for improving the operating efficiency of a bridge grab ship unloader according to claim 2, characterized in that: The S12 specifically includes: During the semi-automatic process, the large cart moves backwards in advance → the small cart moves toward the sea side → and then the large cart moves backwards quickly.

6. The operating method for improving the operating efficiency of a bridge grab ship unloader according to claim 5, characterized in that: In the S12: the grab bucket will form a rocking angle of 45° toward the rear olive sea side.

7. The operating method for improving the operating efficiency of a bridge grab ship unloader according to claim 5, characterized in that: In S12: the position of the trolley and the actual position of the grab bucket form a vertical angle.

8. The operating method for improving the operating efficiency of a bridge grab ship unloader according to claim 7, characterized in that: In the S12, the trolley is moved forward for a certain distance so that the grab bucket can be safely ejected from the cabin during the forward swinging process. The ejection steps are: lifting the grab bucket → quickly stabilizing the grab bucket → stepping on the semi-automatic button → stabilizing the bucket with the trolley.

9. The operating method for improving the operating efficiency of a bridge grab ship unloader according to any one of claims 1 to 8, characterized in that: The S1 also includes S0 before: The operators work on both sides of the sea and land in turn. After grabbing and leveling the sea and land sides, they move the trolley to move the ship unloader to the front and rear olive positions and use the same method to grab the materials in the cabin to a level state.

10. The operating method for improving the operating efficiency of a bridge grab ship unloader according to claim 9, characterized in that: The S0 also includes: The operator needs to first set the semi-automatic operation mode, select the appropriate grab amount according to the density of the goods, and select the highest point of the material for grabbing operations.

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