A method for hoisting counterweight

Abstract

The present invention discloses a method for hoisting the counterweight of a chain-bucket continuous ship unloader, belonging to the technical field of counterweight hoisting. The method comprises the following steps: installing anti-wear blocks on the contact surface between the counterweight and the counterweight beam; designing hoisting lugs, with one lug positioned at the center of gravity of the counterweight; arranging the counterweight hoisting rigging, and adjusting the counterweight to install it in place. This method effectively ensures safe installation of the counterweight, reduces labor intensity for construction workers, and improves production efficiency. It also reduces paint damage, mitigates safety risks, shortens the project assembly cycle, and saves valuable time for project shipment.

Description

Technical Field

[0001] The present invention relates to the technical field of counterweight hoisting, and more particularly to a counterweight hoisting method. Background Art

[0002] The chain bucket continuous ship unloader has the characteristics of high efficiency, energy saving and environmental protection. However, the complex structural design, strict precision requirements and interlocking assembly relationship of this type of ship unloader increase the complexity and safety risks of the final assembly. Among them, the installation of the counterweight is a very critical step in the final assembly process of the chain bucket unloader. The installation of the counterweight is the key to the success of the final assembly of the whole machine. The conventional counterweight assembly has no angle with the horizontal plane. The counterweight form of this project is different from the conventional continuous ship unloader counterweight design and assembly form. This counterweight assembly is at an angle of about 38° with the horizontal plane. Figure 1 As shown, the design form is unique. Although this counterweight design form meets the project's operating conditions at the user's terminal, it increases the difficulty of component manufacturing and installation. In addition, this counterweight is heavy and numerous. A single piece weighs about 110T, and there are a total of 8 pieces. It needs to be hoisted 8 times during the assembly process, accounting for about 50% of the number of large-scale hoisting times during the project assembly process. The hoisting frequency is high, and a high hoisting frequency increases the labor intensity of construction workers, and the production efficiency is relatively low. At the same time, the probability of safety risks is relatively high. Therefore, it is urgent to design a counterweight hoisting method to solve the shortcomings of the existing technology. Summary of the Invention

[0003] The purpose of the present invention is to provide a method for hoisting a counterweight with a unique assembly form, so as to solve the technical problems in the prior art that when hoisting the counterweight with this assembly form, the hoisting frequency is high, the high hoisting frequency increases the labor intensity of construction workers, the production efficiency is relatively low, and the probability of safety risks is relatively high. The method ensures the safe installation of the counterweight, reduces the damage to the paint, reduces the safety risks, and shortens the project assembly period.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] The present invention provides a method for hoisting a counterweight, comprising the following steps:

[0006] S1. Install anti-wear blocks on the contact surface between the counterweight and the counterweight beam;

[0007] S2. Design lifting lugs, with one lug designed at the center of gravity of the counterweight;

[0008] S3. Configure the counterweight lifting rigging and adjust the counterweight to install it in place.

[0009] As a counterweight hoisting method according to the above aspect of the present invention, S1 includes the following steps:

[0010] S11. Complete pre-processing tooling in the counterweight beam workshop;

[0011] S12. The anti-wear block is installed on the contact surface between the counterweight and the counterweight beam;

[0012] S13. Complete the fixed installation of the anti-wear block.

[0013] As a counterweight hoisting method according to the above aspect of the present invention, S11 includes the following steps:

[0014] S111. The bottom plate of the anti-wear block is installed on the inner web of the counterweight beam box;

[0015] S112. Pre-process the threaded holes on the bottom plate of the anti-wear block.

[0016] As a counterweight hoisting method according to the above aspect of the present invention, S13 includes the following steps:

[0017] S131. The counterweight beam is painted in the counterweight beam workshop;

[0018] S132. Use bolts and threaded holes to secure the anti-wear block in place.

[0019] As a counterweight hoisting method according to the above aspect of the present invention, S2 includes the following steps:

[0020] S21. Locate the center of gravity of the counterweight and design the lifting lugs;

[0021] S22. Design one of the lifting lugs on the counterweight so that it is aligned with the center of gravity of the component.

[0022] As a counterweight hoisting method according to the above aspect of the present invention, S3 includes the following steps:

[0023] S31. Configure counterweight lifting rigging;

[0024] S32. Pre-measure the counterweight beam angle;

[0025] S33. Adjust the status of the counterweight by lifting rigging.

[0026] As a counterweight hoisting method according to the above aspect of the present invention, S31 includes the following steps:

[0027] S311. When configuring counterweight hoisting rigging, use wire ropes of different lengths on the sea and land sides.

[0028] S312. Add a hand winch with adjustable length to the wire rope on the sea side.

[0029] As a counterweight hoisting method according to the above aspect of the present invention, S33 includes the following steps:

[0030] S331. Adjust the angle of the counterweight beam using a hand chain hoist;

[0031] S332. Adjust the hoisting status of the counterweight until it is installed in place.

[0032] By adopting the above technical solution, the present invention has the following advantages:

[0033] The present invention provides a hoisting method for a counterweight with a unique assembly form. The counterweight is assembled at an angle of about 38° to the horizontal plane. By installing anti-wear blocks, designing lifting lugs, and configuring lifting rigging, the state of the counterweight is adjusted to complete the installation and hoisting of the counterweight, effectively ensuring the safe installation of the counterweight, reducing the labor intensity of construction workers, improving production efficiency, reducing paint damage, reducing safety risks, shortening the project assembly cycle, and gaining valuable time for the project shipment node. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Other features, objects and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0035] Figure 1 It is a schematic diagram of the existing counterweight assembly;

[0036] Figure 2 is a flow chart of a counterweight hoisting method of the present invention;

[0037] Figure 3 Schematic diagram of the installation position of the anti-wear block of the present invention;

[0038] Figure 4 This is a schematic diagram of the installation of a counterweight hoisting rigging configured with the present invention;

[0039] Figure 5a Schematic diagram of the counterweight hoisting state 1 of the present invention;

[0040] Figure 5b Schematic diagram of the second counterweight hoisting state of the present invention;

[0041] Figure 5c Schematic diagram of the third counterweight hoisting state of the present invention.

[0042] Reference numerals: counterweight 1; counterweight beam 2; anti-wear block 3; lifting lug 4; wire rope 5; hand chain hoist 6; center of gravity position of counterweight 7; hook head 8. DETAILED DESCRIPTION

[0043] The technical solution of the present invention is described in detail below in conjunction with the drawings of the specification. The detailed features and advantages of the present invention are described in detail in the specific implementation mode. The content is sufficient to enable any technical personnel in this field to understand the technical content of the present invention and implement it accordingly. According to the description, claims and drawings disclosed in this specification, those skilled in the art can easily understand the relevant purposes and advantages of the present invention.

[0044] Figure 2 A flow chart showing a method for hoisting a counterweight according to the present invention is shown; Figure 3 A schematic diagram of the installation position of the anti-wear block of the present invention is shown.

[0045] The installation of the chain bucket continuous ship unloader counterweight is an important installation step in the chain bucket unloader assembly process;

[0046] A method for hoisting a counterweight is as follows: Figure 2 As shown, the following steps are included:

[0047] S1. Install anti-wear blocks 3 on the contact surface between the counterweight 1 and the counterweight beam 2;

[0048] S1 includes the following steps:

[0049] S11. Complete pre-processing tooling in the counterweight beam workshop;

[0050] Wherein S11 comprises the following steps:

[0051] S111 counterweight beam workshop production, pre-treatment tooling includes the following specific aspects: First, the bottom plate of the anti-wear block 3 is installed on the inner web of the counterweight beam box 2;

[0052] S112. Then pre-process the threaded holes on the bottom plate of the anti-wear block 3.

[0053] S12. The anti-wear block 3 is installed on the contact surface between the counterweight 1 and the counterweight beam 2. Figure 3 As shown, since the friction coefficient of the anti-wear block 3 is relatively small, the anti-wear block 3 can effectively reduce the friction between the counterweight block and the counterweight beam box during installation, making it easier for the counterweight 1 to slide smoothly into the installation position, avoiding large-scale damage to the paint caused by friction between the boxes, reducing paint damage, and reducing the risk of high-altitude painting operations.

[0054] S13. Complete the fixed installation of the anti-wear block 3.

[0055] Wherein S13 comprises the following steps:

[0056] S131. The counterweight beam 2 is completed in the counterweight beam workshop coating process;

[0057] S132. Use bolts to connect with the threaded holes and use bolts to fix the anti-wear block 3 in place.

[0058] The smooth installation of the anti-wear block 3 increases the contact area between the counterweight 1 and the counterweight beam 2, meets the installation force requirements of the counterweight 1, effectively reduces the friction between the counterweight block and the box of the counterweight beam 2, facilitates the smooth introduction of the counterweight 1 into a safe position, avoids large-scale damage to the paint caused by friction between the boxes, and reduces the risk of high-altitude painting operations.

[0059] S2. Design of lifting lug 4, one side of the lifting lug 4 is designed at the center of gravity of the counterweight lifting;

[0060] S2 includes the following steps:

[0061] S21. Locate the center of gravity of the counterweight and design the lifting lugs 4 for lifting. The total number of lifting lugs 4 is 2.

[0062] The center of gravity of the counterweight is mainly found through detailed drawings. First, the center of gravity position of each part is calculated separately, then the center of gravity position of the assembly is calculated, and finally the center of gravity position of the overall counterweight is combined.

[0063] S22. Hoist according to the final assembly installation state. Design one of the lifting lugs 4 on the counterweight 1 to be aligned with the component counterweight's center of gravity 7. This design facilitates transferring the majority of the hoisting weight to one lifting lug, minimizing the error between the counterweight's hoisting angle and the assembly angle. After designing the lifting lug 4, hoist according to the final assembly installation state.

[0064] Figure 4 Shows a schematic diagram of the installation of a counterweight hoisting rigging configured with the present invention; Figure 5a A schematic diagram showing a counterweight hoisting state 1 of the present invention is shown; Figure 5b A schematic diagram showing a second state of counterweight hoisting of the present invention is shown; Figure 5c A schematic diagram showing the third counterweight hoisting state of the present invention is shown.

[0065] S3. Configure the counterweight lifting rigging and adjust the counterweight 1 to install it in place.

[0066] S31. Configure counterweight lifting rigging;

[0067] Wherein S31 comprises the following steps:

[0068] S311. When installing the counterweight, it is necessary to configure the counterweight lifting rigging. The configuration of the counterweight lifting rigging is as follows: Figure 4 As shown, first, steel wire ropes 5 of different lengths are configured on the sea side and the land side respectively, wherein the steel wire rope on the sea side is longer than the steel wire rope on the land side. When configuring the counterweight lifting rigging, the hook head 8 hooks the steel wire rope on the sea side to lift the counterweight 1.

[0069] S312. In addition, a hand chain hoist 6 capable of adjusting the length of the wire rope 5 is added to the sea side, and the angle of the counterweight 1 is easily adjusted by the hand chain hoist 6, according to Figure 4 It is suggested to configure counterweight lifting rigging. By configuring counterweight lifting rigging, the labor intensity of construction workers can be reduced, production efficiency can be improved, and the safety risks of construction can be reduced.

[0070] S32. Measure the angle of the counterweight beam in advance to facilitate subsequent adjustment of the hoisting state of the counterweight 1.

[0071] S33. Adjust the counterweight by lifting rigging. Figure 5a 、 Figure 5b and Figure 5c shown.

[0072] Wherein S33 comprises the following steps:

[0073] S331. Adjust the angle of the counterweight beam 2 by the hand hoist 6, so that the counterweight beam 1 is in different angles, 5a, Figure 5b and Figure 5c These respectively represent three different hoisting states of the counterweight 1 when the counterweight beam 1 is at three different angles.

[0074] S332. Adjust the hoisting status of counterweight 1 until counterweight 1 is installed in place.

[0075] Through the smooth implementation of the above technical solution, the safe installation of the counterweight is effectively guaranteed, the labor intensity of construction workers is reduced, production efficiency is improved, paint damage is reduced, safety risks are reduced, the project assembly cycle is shortened, and valuable time is gained for the project shipment node.

[0076] Finally, it should be pointed out that although the present invention has been described with reference to the current specific embodiments, ordinary technicians in this technical field should realize that the above embodiments are only used to illustrate the present invention and are not used to limit the present invention. Various equivalent changes or substitutions can be made without departing from the concept of the present invention. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the essential spirit of the present invention, they will fall within the scope of the claims of the present invention.

Claims

1. A method for hoisting a counterweight for a chain bucket continuous ship unloader, characterized in that: The counterweight is assembled at an angle of 38° to the horizontal plane. The hoisting method includes the following steps: S1. Installing anti-wear blocks on the contact surface between the counterweight and the counterweight beam, wherein S1 comprises the following steps: S11. Pre-processing tooling is completed in the counterweight beam workshop. S11 includes the following steps: S111. The bottom plate of the anti-wear block is installed on the inner web of the counterweight beam box; S112. The threaded holes on the bottom plate of the anti-wear block are pre-processed; S12. The anti-wear block is installed on the contact surface between the counterweight and the counterweight beam; S13. Complete the fixed installation of the anti-wear block, said S13 comprising the following steps: S131. The counterweight beam is painted in the counterweight beam workshop; S132. Use bolts and threaded holes to fix the anti-wear block in place. The installation of anti-wear blocks increases the contact area between the counterweight and the counterweight beam, meeting the force requirements for counterweight installation and effectively reducing the friction between the counterweight block and the counterweight beam box, making it easier for the counterweight to be smoothly guided into a safe position, avoiding large-scale damage to the paint caused by friction between the boxes, and reducing the risk of high-altitude painting operations; S2. Design a lifting lug, with one lifting lug designed at the center of gravity of the counterweight. S2 includes the following steps: S21. Locate the center of gravity of the counterweight and design the lifting lugs. The total number of lifting lugs is 2. Find the center of gravity of the counterweight through detailed drawings. First calculate the center of gravity position of each part separately, then calculate the center of gravity position of the assembly, and finally combine them to form the overall center of gravity position of the counterweight; S22. Design one of the counterweight's lifting lugs to align with the component's center of gravity. This design helps transfer the majority of the lifting weight to one lug, minimizing the error between the counterweight's lifting angle and its assembly angle. S3. Configure the counterweight lifting rigging and adjust the counterweight to be installed in place. The S3 includes the following steps: S31. Configuring the counterweight hoisting rigging, the S31 comprises the following steps: S311. When configuring the counterweight hoisting rigging, use different lengths of wire rope on the seaside and landside, with the seaside wire rope being longer than the landside wire rope. When configuring the counterweight hoisting rigging, use the hook head to hook the seaside wire rope to hoist the counterweight. S312. Add an adjustable chain hoist to the seaside wire rope. Adjust the angle of the counterweight using the chain hoist. By deploying a counterweight hoisting rigging system, the labor intensity of construction workers can be reduced, thereby minimizing safety risks during construction. S32. Pre-measure the counterweight beam angle to facilitate subsequent adjustment of the counterweight hoisting state; S33. Adjust the state of the counterweight by lifting the rigging, wherein S33 comprises the following steps: S331. Adjust the angle of the counterweight by using a hand chain hoist so that the counterweight is at different angles; S332. Adjust the hoisting status of the counterweight until it is installed in place.

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