Disassembling and assembling method for balance chain unit of gear rack vertical ship lift

Abstract

The invention discloses a method for disassembling and assembling a balance chain unit of a gear rack vertical ship lift, which comprises the following steps of: S1, presetting a balance chain to be replaced in a ship chamber in advance, and splicing to form a plurality of sections; s2, a balance chain dismounting auxiliary traction device is arranged in the ship compartment; s3, a ship chamber side auxiliary dismounting and mounting device is arranged on the ship reception chamber; s4, arranging a counterweight side auxiliary dismounting and mounting device in the ship compartment; s5, the old balance chain is dismantled in a segmented mode, and meanwhile the ship reception chamber ascends and a balance weight descends for cooperation; and S6, a new balance chain is installed in a segmented mode, and meanwhile the ship reception chamber descends and the balance weight ascends for cooperation. Through the method, the problem of replacement of the balance chain unit of the gear rack vertical ship lift is solved, the construction technical difficulty is reduced, manpower is saved, tool equipment can be repeatedly used, resource investment is saved, the operation safety risk is reduced, the operation method is simple, and safe and stable operation of the ship lift is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of vertical ship lift maintenance, and in particular to a method for disassembling and assembling a balance chain unit of a rack and pinion vertical ship lift. Background Art

[0002] A ship lift is a type of lifting machinery that uses a lifting and lowering method to enable ships to overcome the water level difference on the waterway. Figure 1 , where the ship-carrying compartment 5 is the box component for carrying ships, and the counterweight system belongs to the load balancing counterweight system in the lifting machinery, which is dedicated to balancing the load of the ship-carrying compartment, reducing the power of the motor, and stabilizing the lifting and lowering operation of the ship-carrying compartment. It is one of the core components of the overall structure of the ship lift. A certain ship lift counterweight system has more than ten sets installed, symmetrically arranged on both sides of the ship compartment. The counterweight system consists of a pulley unit 1, a counterweight 2, a wire rope 3, a balance chain 4, and a wire rope adjustment device.

[0003] The balance chain 4 is made of steel chain components. A single balance chain is more than 100 meters long and weighs about 60 tons. During the long-term operation of the ship lift, it has been responsible for the balance operation between the cabin and the balance group. Key components such as the balance chain guide wheel and the chain coupling are prone to wear, which affects the working state of the balance chain and thus affects the safe operation of the ship lift. The balance chain unit needs to be regularly disassembled, replaced and repaired. As the lower link unit connecting the counterweight and the cabin, the balance chain 4 is affected by the maintenance conditions and the operating environment. Its replacement is difficult, complex, costly and has high safety risks. At present, there is no mature experience in the industry that can be used as a reference. Summary of the invention

[0004] In order to solve the current technical problems, the main purpose of the present invention is to provide a method for disassembling and assembling a balance chain unit of a rack and pinion vertical ship lift, which can efficiently complete the disassembly, assembly and replacement of the balance chain of the rack and pinion vertical ship lift.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a method for disassembling and assembling a balance chain unit of a rack and pinion vertical ship lift, comprising the following steps: S1. Pre-place the balance chain to be replaced in the cabin in advance and splice it into multiple sections; S2. Arrange a balance chain disassembly and assembly auxiliary traction device in the cabin; S3. Arrange the auxiliary disassembly and assembly device on the ship-carrying box; S4. Arrange auxiliary disassembly and assembly device on the side of counterweight in the cabin; S5. The old balance chain is dismantled in sections, while the ship carriage moves upward and the balance weight moves downward; S6. The new balance chain is installed in sections, with the support box moving downward and the balance weight moving upward at the same time.

[0006] In S1, the balance chain is transported to the site according to the unit length, and then the factory unit of the balance chain is lifted into the cabin by a crane. After being transferred to the installation site by a forklift, it is assembled in sections of 8-15m each, and all sections are placed side by side in the upstream and downstream directions.

[0007] In S2, the balance chain disassembly and assembly auxiliary traction device includes a first traction hoist and a second traction hoist, a first anchor is installed in the middle of the cabin room, the first anchor is used to hook and install the first traction hoist, and a second anchor is installed on the outside of the cabin room, the second anchor is used to hook and install the second traction hoist.

[0008] In S3, the auxiliary disassembly and assembly device on the ship compartment side includes a hanging platform and a third traction hoist, the hanging platform is installed on the ship compartment, and the third traction hoist is suspended on the hanging platform.

[0009] In S4, the counterweight side auxiliary disassembly and assembly device includes a supporting hoisting platform and a fourth traction hoist. The supporting hoisting platform is installed in the cabin, and the fourth traction hoist is cantilevered on the upper end of the supporting hoisting platform close to one side of the counterweight.

[0010] Two fourth traction hoists are cantilevered and installed on the upper end of the supporting hoisting platform. The two fourth traction hoists are arranged in an inverted triangle when pulling the balance chain.

[0011] In S5, the steps for removing the old balance chain segments are as follows: first remove the connecting segment on the side of the ship-carrying box, then remove the middle segment, and finally remove the connecting segment on the side of the counterweight.

[0012] The steps for removing the connecting section and the middle section on one side of the ship compartment are as follows: Hook and connect the third traction hoist to the balance chain on one side of the ship-carrying compartment; Remove the first pin connecting the balance chain and the ship-bearing box; Use the third traction hoist to lower the balance chain to the lowest point in contact with the ground; Connect the first traction hoist to the lowest point of the balance chain; Release the first connecting pin between the balancing chain links where the balancing chain contacts the ground; The third traction hoist is lowered, and the first traction hoist is pulled outward at the same time to drag the connecting section on one side of the ship-carrying compartment out of the counterweight well; The ship-bearing box moves upward and the counterweight moves downward, and the third traction hoist is used to pull the old counterweight chain out of the counterweight well in sections; The steps for dismantling the connection sections on one side of the counterweight are as follows: Hook the fourth traction hoist onto the balance chain at the lower end of the counterweight; Remove the second connecting pin between the balance chain and the counterweight, and use the fourth traction hoist to lower the balance chain to the lowest point in contact with the ground; Connect the first traction hoist to the lowest point of the balance chain; The fourth traction hoist is lowered, and at the same time the first traction hoist is pulled outward to drag the connecting segment on one side of the counterweight out of the counterweight well.

[0013] In S6, the steps for installing the new balance chain segments are as follows: first install the connection segment between the balance chain and the counterweight side, then install the middle segment, and finally install the connection segment between the balance chain and the ship-bearing compartment side.

[0014] The installation steps of the connecting section of the balance chain and the counterweight on one side and the middle section are as follows: Connect the second traction hoist to the new balance chain installation section, pull the new balance chain installation section into the balance weight well and then disconnect it; Lower the fourth traction hoist into the counterweight well to hook the new counterweight chain installation segment, and lift the new counterweight chain installation segment to the bottom of the counterweight; Install the second connecting pin between the balance chain and the balance weight; The ship carriage moves downward, and the counterweight moves upward to cooperate, and the new balance chain is installed and connected section by section; When the counterweight moves upward to the highest position and the ship-carrying box moves downward to the lowest position, the connecting segment between the counterweight chain and one side of the ship-carrying box is installed; After the last section of the new balance chain is installed and pulled to the counterweight wellhead, the third traction hoist is lowered and connected to the end of the balance chain. Then the third traction hoist lifts the balance chain, and then the balance chain is installed and connected to the first pin shaft of the bearing box.

[0015] The present invention has the following beneficial effects: By using the gear rack vertical ship lift balance chain unit disassembly and assembly method of the present invention, the problem of replacing the gear rack vertical ship lift balance chain unit is solved, the construction technical difficulty is reduced, and manpower is saved. The tooling equipment used in the process can be reused, which saves resource investment and reduces the safety risk of operation. In addition, the operation method is simple, which ensures the safe and stable operation of the ship lift. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the mounting connection of the ship lift cabin-counterweight system.

[0018] Figure 2 It is a schematic diagram of the operation posture of the cabin going up and the counterweight going down when the counterweight chain of the present invention is removed.

[0019] Figure 3It is a schematic diagram of the running posture of the cabin going down and the balancing reorganization going up when the balancing chain of the present invention is installed.

[0020] Figure 4 This is a schematic diagram of the bottom plan layout of the cabin when the balance chain unit of the present invention is disassembled and assembled.

[0021] Figure 5 It is a schematic diagram of the disassembly and assembly arrangement of the balance chain unit on the ship compartment side of the present invention.

[0022] Figure 6 It is a schematic diagram of the disassembly and assembly arrangement of the counterweight side of the balance chain unit of the present invention.

[0023] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0024] Reference numerals: Pulley unit 1, counterweight 2, wire rope 3, balance chain 4, ship bearing compartment 5, ship compartment room 6, old balance chain removal section 7, new balance chain installation section 8, first traction hoist 9, second traction hoist 10, first ground anchor 11, first connecting pin 12, hanging bracket platform 13, third traction hoist 14, first pin 15, second ground anchor 16, tandem pin 17, supporting lifting platform 19, fourth traction hoist 20, second connecting pin 21. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described more clearly below in conjunction with the accompanying drawings and embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] See also Figure 1-7 As shown, a method for disassembling and assembling a balance chain unit of a rack and pinion vertical ship lift comprises the following steps: S1, pre-place the balance chain 4 to be replaced in the cabin room 6 in advance, and splice it into multiple sections; S2. Arrange a balance chain disassembly and assembly auxiliary traction device in the cabin room 6; S3, arranging a ship compartment side auxiliary disassembly and assembly device on the ship compartment 5; S4, arranging a counterweight side auxiliary disassembly and assembly device in the cabin room 6; S5, the old balance chain 4 is dismantled in sections, while the support box 5 moves upward and the balance weight 2 moves downward; S6. The new balance chain 4 is installed in sections, while the support box 5 moves downward and the balance weight 2 moves upward.

[0027] Through the above method, the problem of replacing the balance chain unit of the rack and pinion vertical ship lift is solved, the construction technical difficulty is reduced, manpower is saved, and the tooling equipment can be reused, saving resource investment and reducing operational safety risks. The operation method is simple, ensuring the safe and stable operation of the ship lift.

[0028] In S1, the balance chain 4 is transported to the site according to the unit length, and then the balance chain factory unit is lifted into the ship compartment 6 by a crane. After being transferred to the installation site by a forklift, it is assembled in sections of 8-15m each. All sections are placed side by side in the upstream and downstream directions to facilitate the sections to be pulled into the counterweight well.

[0029] In this embodiment, the sections are assembled into 10-meter sections each.

[0030] In this embodiment, see Figure 4 , 5 6. The auxiliary traction device for disassembling and assembling the balance chain includes a first traction hoist 9 and a second traction hoist 10. A first ground anchor 11 is installed in the middle of the cabin room 6. The first ground anchor 11 is used to hook and install the first traction hoist 9. A second ground anchor 16 is installed on the outside of the cabin room 6. The second ground anchor 16 is used to hook and install the second traction hoist 10. The first traction hoist 9 is used to pull the old balance chain 4 out of the balance weight well, and the second traction hoist 10 is used to pull the new balance chain 4 from the cabin room 6 into the balance weight well. The first ground anchor 11 is used to fix the first traction hoist 9, and the second ground anchor 16 is used to fix the second traction hoist 10.

[0031] exist Figure 4 In FIG. 1 , the pulling direction of the old balancing chain removal section 7 and the new balancing chain installation section 8 is shown.

[0032] In this embodiment, the traction hoist can be electric or manual.

[0033] In this embodiment, see Figure 5 The auxiliary disassembly and assembly device on the ship compartment side includes a hanging platform 13 and a third traction hoist 14. The hanging platform 13 is detachably installed on the ship compartment 5, and the third traction hoist 14 is suspended on the hanging platform 13. In this way, the balance chain 4 at one end of the ship compartment 5 can be lifted and lowered by the third traction hoist 14.

[0034] In this embodiment, see Figure 6 The auxiliary disassembly and assembly device on the counterweight side includes a supporting hoisting platform 19 and a fourth traction hoist 20. The supporting hoisting platform 19 is installed in the cabin room 6, and the fourth traction hoist 20 is cantilevered on the upper end of the supporting hoisting platform 19 near the side of the counterweight 2. The supporting hoisting platform 19 is supported and fixed on one side of the cabin room 6, and the supporting hoisting platform 19 is located on the lower side of the counterweight 2. Figure 7A fourth traction hoist 20 is cantilevered on the upper end of the supporting hoisting platform 19 , and the balance chain 4 at one end of the counterweight 2 can be lifted and lowered by the fourth traction hoist 20 .

[0035] For further information, see Figure 7 Two fourth traction hoists 20 are cantilevered and installed on the upper end of the supporting hoisting platform 19. The two fourth traction hoists 20 are arranged in an inverted triangle when pulling the balance chain 4, which is convenient for disassembling and installing the second connecting pin shaft 21.

[0036] Embodiment two: Based on the first embodiment, the steps for dismantling the old balance chain 4 in sections are as follows: First remove the connecting section on one side of the ship-carrying compartment 5, then remove the middle section, and finally remove the connecting section on one side of the counterweight 2.

[0037] For details, see Figure 5 The steps for removing the connecting section and the middle section on one side of the ship compartment 5 are as follows: The third traction hoist 14 is hooked and connected to the balance chain 4 on one side of the ship-carrying compartment 5; Remove the first pin 15 connecting the balance chain 4 and the ship-bearing box 5; Use the third traction hoist 14 to lower the balance chain 4 to the lowest point to contact the ground; Connect the first traction hoist 9 to the lowest point of the balance chain 4; Release the first connecting pin 12 between the balancing chain links where the balancing chain 4 contacts the ground; The third traction hoist 14 is lowered, and at the same time the first traction hoist 9 is pulled outward to drag the connecting segment on one side of the ship-carrying compartment 5 out of the counterweight well; The ship-bearing box 5 moves upward and the counterweight 2 moves downward, and the third traction hoist 14 is used to pull outward. In this process, the first connecting pin 12 between the counterweight chain links is removed in sections, so that the old counterweight chain is dragged out of the counterweight well in sections.

[0038] The steps for dismantling the connection sections on one side of the counterweight 2 are as follows: See also Figure 6 , while combining Figure 5 , hook the fourth traction hoist 20 on the balance chain 4 at the lower end of the counterweight 2; Remove the second connecting pin 21 between the balancing chain 4 and the counterweight 2, and use the fourth traction hoist 20 to lower the balancing chain 4 to the lowest point in contact with the ground; Connect the first traction hoist 9 to the lowest point of the balance chain 4; The fourth traction hoist 20 is lowered, and at the same time the first traction hoist 9 is pulled outward to drag the connecting segment on one side of the counterweight 2 out of the counterweight well.

[0039] Embodiment three: Based on the first embodiment, the steps for installing the new balancing chain 4 in sections are as follows: First install the connecting section between the balance chain 4 and the counterweight 2, then install the middle section, and finally install the connecting section between the balance chain 4 and the ship-bearing compartment 5.

[0040] See also Figure 6 The installation steps of the connecting segment of the balance chain 4 and the balance weight 2 and the middle segment are as follows: Connect the second traction hoist 10 to the new balance chain installation segment 8, pull the new balance chain installation segment 8 into the balance weight well and then disconnect it; Lower the fourth traction hoist 20 into the counterweight well to hook the new counterweight chain installation segment 8, and lift the new counterweight chain installation segment 8 to the bottom of the counterweight 2; Install the second connecting pin 21 between the balance chain 4 and the balance weight 2; The ship-bearing box 5 moves downward, and the counterweight 2 moves upward to cooperate, and the new balance chain installation sections 8 are installed and connected section by section; in this process, the series pins 17 between adjacent new balance chain installation sections 8 are installed in sequence.

[0041] When the counterweight 2 moves upward to the highest position and the ship-carrying box 5 moves downward to the lowest position, the connecting segment between the counterweight chain 4 and the ship-carrying box 5 is installed. Figure 5 .

[0042] After the last section of the new balance chain installation segment 8 is pulled to the counterweight wellhead, the third traction hoist 14 is lowered and connected to the end of the balance chain 4. Then the third traction hoist 14 lifts the balance chain 4, and then the balance chain 4 is installed and connected to the first pin shaft 15 with the ship bearing box 5, completing the overall installation of the new balance chain.

[0043] After the overall installation of the balance chain is completed, the upward counterweight of the supporting compartment 5 is tested downward as a whole to observe whether there are abnormal conditions such as abnormal noise, jamming, etc. during the operation of the balance chain and eliminate them in time.

[0044] After the defect is eliminated, remove the balance chain disassembly and assembly auxiliary traction device, the cabin side auxiliary disassembly and assembly device, and the counterweight side auxiliary disassembly and assembly device and restore them to their original state.

Claims

1. A method for disassembling and assembling a balance chain unit of a rack and pinion vertical ship lift, characterized in that: The following steps are involved: S1, pre-placing the balance chain (4) to be replaced in the cabin (6) and splicing them into multiple sections; S2. Arrange a balance chain disassembly and assembly auxiliary traction device in the cabin room (6); S3, arranging a ship compartment side auxiliary disassembly and assembly device on the ship compartment (5); S4. Arrange a counterweight side auxiliary disassembly and assembly device in the cabin room (6); S5, the old balance chain (4) is removed in sections, while the support box (5) moves upward and the balance weight (2) moves downward; S6. The new balance chain (4) is installed in sections, while the support box (5) moves downward and the balance weight (2) moves upward.

2. A method for disassembling and assembling a balance chain unit of a rack and pinion vertical ship lift according to claim 1, characterized in that: In S1, the balance chain (4) is transported to the site according to the unit length, and then the balance chain factory unit is lifted into the ship compartment (6) by a crane. After being transferred to the installation location by a forklift, it is assembled in sections of 8-15 meters each, and all the sections are placed side by side in the upstream and downstream directions.

3. A method for disassembling and assembling a balance chain unit of a rack and pinion vertical ship lift according to claim 2, characterized in that: In S2, the balance chain disassembly and assembly auxiliary traction device comprises a first traction hoist (9) and a second traction hoist (10), a first ground anchor (11) is installed in the middle of the cabin room (6), the first ground anchor (11) is used to hook and install the first traction hoist (9), and a second ground anchor (16) is installed on the outer side of the cabin room (6), the second ground anchor (16) is used to hook and install the second traction hoist (10).

4. A method for disassembling and assembling a balance chain unit of a rack and pinion vertical ship lift according to claim 3, characterized in that: In S3, the auxiliary disassembly and assembly device on the ship compartment side comprises a hanging platform (13) and a third traction hoist (14), the hanging platform (13) is installed on the ship compartment (5), and the third traction hoist (14) is suspended on the hanging platform (13).

5. A method for disassembling and assembling a balance chain unit of a rack and pinion vertical ship lift according to claim 4, characterized in that: In S4, the counterweight side auxiliary disassembly and assembly device comprises a supporting hoisting platform (19) and a fourth traction hoist (20), the supporting hoisting platform (19) being installed in the cabin room (6), and the fourth traction hoist (20) being cantilevered and installed on the upper end of the supporting hoisting platform (19) close to one side of the counterweight (2).

6. A method for disassembling and assembling a balance chain unit of a rack and pinion vertical ship lift according to claim 5, characterized in that: Two fourth traction hoists (20) are cantilevered and installed on the upper end of the supporting hoisting platform (19), and the two fourth traction hoists (20) are arranged in an inverted triangle when pulling the balance chain (4).

7. The method for disassembling and assembling a balance chain unit of a rack and pinion vertical ship lift according to claim 5, characterized in that: In S5, the steps of removing the old balance chain (4) in sections are as follows: first remove the connecting section on one side of the ship-carrying box (5), then remove the middle section, and finally remove the connecting section on one side of the counterweight (2).

8. A method for disassembling and assembling a balance chain unit of a rack and pinion vertical ship lift according to claim 7, characterized in that: The steps for removing the connecting section and the middle section on one side of the ship carrier (5) are as follows: The third traction hoist (14) is hooked and connected to the balance chain (4) on one side of the ship-carrying compartment (5); Remove the first pin shaft (15) connecting the balance chain (4) and the boat-carrying box (5); Using the third traction hoist (14) to lower the balance chain (4) to the lowest point where it contacts the ground; Connecting the first traction hoist (9) to the lowest point of the balance chain (4); Release the first connecting pin (12) between the balancing chain links at the point where the balancing chain (4) contacts the ground; The third traction hoist (14) is lowered, and at the same time the first traction hoist (9) is pulled outward to drag the connecting segment on one side of the ship-carrying compartment (5) out of the counterweight well; The ship-carrying box (5) moves upward and the counterweight (2) moves downward, and the old counterweight chain is pulled out of the counterweight well in sections by using the third traction hoist (14); The steps for removing the connection segments on one side of the counterweight (2) are as follows: Hook the fourth traction hoist (20) onto the balance chain (4) at the lower end of the counterweight (2); The second connecting pin (21) between the balancing chain (4) and the counterweight (2) is removed, and the balancing chain (4) is lowered to the lowest point in contact with the ground using the fourth traction hoist (20); Connecting the first traction hoist (9) to the lowest point of the balance chain (4); The fourth traction hoist (20) is lowered, and at the same time the first traction hoist (9) is pulled outward to drag the connecting segment on one side of the counterweight (2) out of the counterweight well.

9. A method for disassembling and assembling a balance chain unit of a rack and pinion vertical ship lift according to claim 5, characterized in that: In S6, the steps for installing the new balancing chain (4) in sections are as follows: first install the connecting section between the balancing chain (4) and the counterweight (2) on one side, then install the middle section, and finally install the connecting section between the balancing chain (4) and the ship-carrying box (5) on one side.

10. A method for disassembling and assembling a balance chain unit of a rack and pinion vertical ship lift according to claim 9, characterized in that: The steps for installing the connecting section of the balance chain (4) and the counterweight (2) on one side and the middle section are as follows: Connecting the second traction hoist (10) to the new balance chain installation segment (8), pulling the new balance chain installation segment (8) into the balance weight well and then disconnecting it; Lowering the fourth traction hoist (20) into the counterweight well to hook the new counterweight chain installation segment (8), and lifting the new counterweight chain installation segment (8) to the bottom of the counterweight (2); Installing a second connecting pin (21) between the balancing chain (4) and the balancing weight (2); The ship-bearing box (5) moves downward, and the counterweight (2) moves upward to cooperate, and the new balance chain installation segments (8) are installed and connected segment by segment; When the counterweight (2) moves upward to the highest position and the ship-carrying box (5) moves downward to the lowest position, the connecting segment between the counterweight chain (4) and one side of the ship-carrying box (5) is installed; After the last section of the new balance chain installation section (8) is pulled to the counterweight wellhead, the third traction hoist (14) is lowered and connected to the end of the balance chain (4), and then the third traction hoist (14) lifts the balance chain (4), and then the balance chain (4) is installed and connected to the first pin shaft (15) with the ship support box (5).

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