Rack replacement method of large gear rack climbing type ship lift

Abstract

The invention discloses a rack replacement method of a large gear rack climbing type ship lift, which comprises a middle rack replacement method, and the middle rack replacement method comprises the following steps: primarily ejecting a middle rack to be replaced by four ejector rods; a rack lifting appliance is connected to the middle rack to be replaced, and the bridge crane is connected with the rack lifting appliance through a steel wire rope; the middle rack to be replaced is completely ejected out from the position between the upper rack section and the lower rack section which are adjacent; operating the bridge crane to move out the middle rack to be replaced and move in a new middle rack; a new middle rack is preliminarily pushed in; and after the rack lifting appliance is dismounted, the new middle rack is completely pushed between the upper and lower adjacent rack sections. The rack replacement device is simple in structure, convenient to replace and high in universality, a rack of a gear and rack driving system on the large gear and rack climbing type ship lift can be safely and stably replaced, rack maintenance work of the large gear and rack climbing type ship lift is guaranteed, and therefore it is guaranteed that the ship lift safely runs for a long time.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ship lift, and particularly relates to a rack replacement method of a large rack-and-pinion climbing ship lift. BACKGROUND

[0002] The large rack-and-pinion climbing ship lift utilizes the meshing transmission of the gear and the rack to drive the ship cabin (a water tank loading a ship) to climb or descend on a vertical track, so as to realize that the ship overcomes the water level difference. The rack-and-pinion driving system is the core power and key equipment of the ship lift, wherein the power components such as the gear and the speed reducer are installed on the ship cabin, and the rack is fixed because it is connected by components such as the rack screw, the short bolt group and the long bolt group on the water structure. When the ship lift works, the driving motor is started and drives the gear to rotate through the speed reducer, so that the gear rotates and moves vertically along the rack, thereby realizing the lifting of the ship lift.

[0003] The overall length of the rack is related to the lifting height, and the total length of a single rack of the large rack-and-pinion climbing ship lift is generally more than 100 m and the weight is huge. Therefore, the rack is generally made by segmentation and assembled as a whole, and the segmented length is generally controlled to be 3-6 meters, and the segmented weight is generally controlled to be 12T-24T, so as to match the lifting capacity of the bridge crane on the top of the water structure. In addition, the rack is segmented according to the position and is divided into top rack, middle rack and bottom rack.

[0004] The rack will have problems such as different degrees of wear, pitting of the tooth surface, gluing and deformation after years of operation. If the above problems occur and are not properly maintained, fatigue fracture will occur in severe cases. Therefore, it is necessary to replace the corresponding rack segment when the above problems occur. However, due to the vertical installation of each rack segment, the heavy weight of the rack segment and the high installation requirement, the replacement of the rack segment is extremely difficult. Especially for the middle rack, because the upper and lower rack segments are attached, the current replacement method generally disassembles the corresponding middle rack from top to bottom in segments. This replacement method is neither economical nor time-consuming, thereby prolonging the time of the waterway being closed. SUMMARY

[0005] The present application provides a rack replacement method of a large rack-and-pinion climbing ship lift, which can efficiently replace the rack.

[0006] The purpose of the present application is achieved by the following technical solutions: A rack replacement method of a large rack-and-pinion climbing ship lift, including a middle rack replacement method, the middle rack replacement method comprising the following steps: running the upper platform of the ship cabin to the middle of the adjacent rack segment below the middle rack to be replaced; Remove several rack screws connecting the upper part of the adjacent rack segment below the intermediate rack to be replaced to the guide plate; Open the cover plate on the platform layer between the upper end of the rack and the bridge crane; Operate the bridge crane, connect the tooth removal base with a steel wire rope, and hoist the tooth removal base to the upper end of the adjacent toothed section below the intermediate toothed rack to be replaced, so that the upper end face of the tooth removal base is seamlessly and horizontally engaged with the upper end face of the adjacent toothed section below the intermediate toothed rack to be replaced. Connect the tooth removal base with screws at the positions where several toothed rack screws are removed from the guide plate. Remove the nuts and washers from all long bolt assemblies on the intermediate rack to be replaced, and remove all rack screws from the intermediate rack to be replaced; Remove the nuts and washers from all the short bolt groups on the intermediate rack to be replaced, and pull out the screws from all the short bolt groups on the intermediate rack to be replaced; Four sets of horizontally arranged hydraulic jacks are fixed on the foundation steel frame. The rear ends of the four sets of hydraulic jacks abut against the foundation steel frame. The front ends of the four sets of hydraulic jacks are respectively horizontally fixed to four push rods. The four push rods extend out and pass through the straight holes in the foundation steel frame and guide plate with four short bolts respectively, and then act on the straight holes at the four corners of the intermediate rack to be replaced. Simultaneously activate four sets of hydraulic jacks so that the intermediate rack to be replaced is initially pushed out by the four jacks; Connect the rack and pinion lifting device to the intermediate rack to be replaced, and connect the bridge crane to the rack and pinion lifting device via a wire rope; Continue to simultaneously activate four sets of hydraulic jacks to completely push out the intermediate rack to be replaced from between its upper and lower adjacent rack segments; Operate the bridge crane to remove the intermediate rack to be replaced; Disconnect the rack and pinion lifting tool from the intermediate rack to be replaced, and then connect the rack and pinion lifting tool to the new intermediate rack. Operate the bridge crane to move the new intermediate rack into the upper end face of the rack disassembly base; Activate the hydraulic jacks to retract the four jack rods; Pass one end of each of the four mounting bolts through the four sets of straight holes in the foundation steel frame, guide plate, and new intermediate rack in sequence; Tighten the mounting nuts at one end of the four mounting bolts to initially push in the new intermediate rack; Remove the rack and pinion lifting tool and continue to tighten the mounting nuts to push the new intermediate rack completely between its upper and lower adjacent rack segments; Install all rack screws and long bolts removed from the rack to be replaced onto the new intermediate rack, remove the mounting nuts, mounting bolts and hydraulic jacks, and then install all short bolts removed from the rack to be replaced onto the new intermediate rack. Remove the rack base and then reinstall the rack screws that were removed from the upper part of the adjacent rack section below the new middle rack.

[0007] Furthermore, after removing the rack screws from the guide plate and connecting the rack base, a temporary operating scaffold is erected from the upper platform of the ship compartment to the area around the intermediate rack to be replaced. When dismantling the tooth-removing base, dismantle the temporary operating scaffolding.

[0008] Furthermore, the tooth-removing base is U-shaped, and the upper opening of the tooth-removing base fits into the upper end of the middle toothed rack.

[0009] Furthermore, the upper end of the tooth-removing base is provided with several lifting holes.

[0010] Furthermore, one side of the tooth-removing base is provided with several mounting holes for installing screws.

[0011] Furthermore, the diameter of one end of the push rod is no larger than the straight hole on the foundation steel frame and guide plate, while the diameter of one end of the push rod is larger than the straight hole on the intermediate rack.

[0012] Furthermore, several rack lifting devices are symmetrically connected to both sides of the central rack.

[0013] Furthermore, the hydraulic jacks are fixedly connected to the foundation steel frame via pads.

[0014] Furthermore, the rack replacement method for a large rack and pinion climbing ship lift includes a method for replacing the top rack, which includes the following steps: Move the upper platform of the ship compartment to the middle of the adjacent rack section below the top rack to be replaced; Remove several rack screws connecting the upper part of the adjacent rack segment below the top rack to be replaced to the guide plate; Open the cover plate on the platform layer between the upper end of the rack and the bridge crane; Operate the bridge crane, connect the tooth removal base with a steel wire rope, and hoist the tooth removal base to the upper end of the adjacent toothed section below the top toothed rack to be replaced, so that the upper end face of the tooth removal base is seamlessly horizontally engaged with the upper end face of the adjacent toothed section below the top toothed rack to be replaced. Connect the tooth removal base with screws at the positions where several toothed rack screws are removed from the guide plate. Remove the nuts and washers from all long bolt assemblies on the top rack to be replaced, and remove all rack screws from the top rack to be replaced; Remove the nuts and washers from all the short bolt assemblies on the top rack to be replaced, and pull out the screws from all the short bolt assemblies on the top rack to be replaced; Four sets of horizontally arranged hydraulic jacks are fixed on the foundation steel frame. The rear ends of the four sets of hydraulic jacks abut against the foundation steel frame. The front ends of the four sets of hydraulic jacks are respectively horizontally fixed to four push rods. The four push rods extend out and pass through the straight holes in the foundation steel frame and guide plate with four short bolts respectively, and then act on the straight holes at the four corners of the top rack to be replaced. Simultaneously activate four sets of hydraulic jacks so that the top rack to be replaced is initially pushed out by the four jacks; Connect the eye bolt to the top rack to be replaced, and connect the bridge crane to the eye bolt via a wire rope; Continue to simultaneously activate four sets of hydraulic jacks to completely push out the top rack to be replaced from between its upper and lower adjacent rack segments; Operate the bridge crane to remove the top rack to be replaced; Disconnect the eye bolt from the top rack to be replaced, and then connect the eye bolt to the new top rack. Operate the bridge crane to move the new top rack into the upper surface of the rack disassembly base; Activate the hydraulic jacks to retract the four jack rods; Pass one end of each of the four mounting bolts through the four sets of straight holes in the foundation steel frame, guide plate, and new top rack in sequence; Tighten the mounting nuts at one end of the four mounting bolts to initially push in the new top rack; Remove the eye bolts and continue to tighten the mounting nuts to fully push the new top rack between its upper and lower adjacent rack segments; Install all rack screws and long bolts removed from the rack to be replaced onto the new top rack, remove the mounting nuts, mounting bolts and hydraulic jacks, and then install all short bolts removed from the rack to be replaced onto the new top rack. Remove the rack base and then reinstall the rack screws that were removed from the upper part of the adjacent rack section below the new top rack. Furthermore, the rack replacement method for a large rack and pinion climbing ship lift includes a method for replacing the bottom rack, which includes the following steps: Move the cabin to the middle rack or the top rack; Install the tooth-removing base and install an auxiliary horizontal plate on the tooth-removing base so that the auxiliary horizontal plate is seamlessly horizontally engaged with the upper end face of the tooth-removing base and the lower end face of the bottom toothed rack. Remove the nuts and washers from all long bolt assemblies on the bottom rack to be replaced, and remove all rack screws from the bottom rack to be replaced; Remove the nuts and washers from all the short bolt assemblies on the bottom rack to be replaced, and pull out the screws from all the short bolt assemblies on the bottom rack to be replaced; Four sets of horizontally arranged hydraulic jacks are fixed on the foundation steel frame. The rear ends of the four sets of hydraulic jacks abut against the foundation steel frame. The front ends of the four sets of hydraulic jacks are respectively horizontally fixed to four push rods. The four push rods extend out and pass through the straight holes in the foundation steel frame and guide plate with four short bolts respectively, and then act on the straight holes at the four corners of the bottom rack to be replaced. Simultaneously activate four sets of hydraulic jacks so that the bottom rack to be replaced is pushed out by four jacks, and then remove the bottom rack to be replaced. Move the new bottom rack into the upper surface of the toothed base; Activate the hydraulic jacks to retract the four jack rods; Pass one end of each of the four mounting bolts through the four sets of straight holes in the foundation steel frame, guide plate, and new bottom rack in sequence; Tighten the mounting nuts at one end of the four mounting bolts to push in the new bottom rack; Install all rack screws and long bolts removed from the rack to be replaced onto the new bottom rack; remove the mounting nuts, mounting bolts and hydraulic jacks; then install all short bolts removed from the rack to be replaced onto the new bottom rack. Remove the tooth-removing base and auxiliary horizontal plate.

[0015] The beneficial effects of this invention are as follows: The structure adopted in this invention is simple, easy to replace, and highly versatile. It can safely and smoothly replace the racks of the rack drive system on large rack and pinion ship lifts, thus ensuring the rack maintenance of large rack and pinion ship lifts and facilitating the long-term safe operation of the ship lift. In addition, when replacing intermediate racks, this invention is both economical and quick, minimizing navigation downtime and ensuring smooth navigation as much as possible. Attached Figure Description

[0016] The invention will now be described in more detail with reference to embodiments and the accompanying drawings. Figure 1 A schematic diagram of the installation of the tooth-removing fixture in this invention is shown; Figure 2 Showing Figure 1 Side view; Figure 3 Showing Figure 2 Sectional view at point AA; Figure 4 This diagram shows the hoisting process when the rack segment to be replaced is initially ejected in this invention. Figure 5 This diagram shows the hoisting process when the rack segment to be replaced is completely ejected in this invention. Figure 6 Showing Figure 4A magnified view of a section at point B in the middle; Figure 7 Showing Figure 4 A magnified view of a section at point C; Figure 8 This shows a schematic diagram of the tooth disassembly tool in this invention; In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.

[0017] Figure label: 1. Gear base; 101. Lifting hole; 102. Mounting hole; 2. Gear rack; 3. Guide plate; 4. Short bolt set; 5. Gear rack screw; 6. Foundation steel frame; 7. Phase I foundation; 8. Phase II foundation; 9. Foundation mortar layer; 10. Long bolt set; 11. Bridge crane; 12. Hydraulic jack; 13. Top rod; 14. Pad plate; 15. Gear rack lifting device; 16. Wire rope. Detailed Implementation

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] This invention provides a method for replacing the rack in a large rack and pinion climbing ship lift, such as... Figures 1-8 As shown, the method for replacing the intermediate rack includes the following steps: Move the upper platform of the ship compartment (at the same height as the main longitudinal beam deck of the ship compartment) to a position 1m below the upper end face of the adjacent rack section below the intermediate rack to be replaced; Remove the five sets of rack screws 5 on each side that connect the upper part of the adjacent rack segment below the intermediate rack to be replaced to the guide plate 3. Open the cover plate on the platform layer between the upper end of the rack and the bridge machine 11; The hook of the bridge crane 11 is equipped with a steel wire rope 16, which is connected to the tooth removal base 1. The bridge crane 11 is operated to lift the tooth removal base 1 to the upper end of the adjacent tooth segment below the intermediate tooth to be replaced, and to make the upper end face of the tooth removal base 1 seamlessly horizontally engaged with the upper end face of the adjacent tooth segment below the intermediate tooth to be replaced. The tooth removal base 1 is screwed to the position where several tooth screws 5 are removed on the guide plate 3. Temporary scaffolding was erected from the upper platform of the ship's compartment to the area around the intermediate rack to be replaced; Remove the nuts and washers from all the long bolt groups 10 on the intermediate rack to be replaced, and remove all the rack screws 5 on the intermediate rack to be replaced; Remove the nuts and washers from all short bolt groups 4 on the intermediate rack to be replaced, and pull out the screws from all short bolt groups 4 on the intermediate rack to be replaced. Four sets of horizontally arranged hydraulic jacks 12 are fixed on the base steel frame 6. The rear ends of the four sets of hydraulic jacks 12 abut against the base steel frame 6. The front ends of the four sets of hydraulic jacks 12 are respectively horizontally fixed to four push rods 13. The four push rods 13 extend out and pass through the straight holes of the four short bolt groups 4 on the base steel frame 6 and the guide plate 3, and then act on the straight holes at the four corners of the intermediate rack to be replaced. Simultaneously start four sets of hydraulic jacks 12 so that the intermediate rack to be replaced is slowly pushed out by four push rods 13. When the intermediate rack to be replaced has been moved a certain distance (e.g., 50mm), simultaneously close the four sets of hydraulic jacks 12 to stop pushing out. Connect the rack and pinion hanger 15 to the intermediate rack to be replaced, and connect the bridge crane 11 to the rack and pinion hanger 15 via the wire rope 16; Continue to simultaneously activate four sets of hydraulic jacks 12 to slowly and completely push out the intermediate rack to be replaced from between its upper and lower adjacent rack segments; Operate bridge crane 11 to transfer the intermediate rack to be replaced to the upper platform layer or other placement location; Disconnect the rack and pinion lifting device 15 from the intermediate rack to be replaced, and then connect the rack and pinion lifting device 15 to the new intermediate rack. Operate bridge crane 11 to move the new intermediate rack into the upper end face of rack disassembly base 1; Activate hydraulic jack 12 to retract the four jack rods 13; Pass one end of each of the four mounting bolts through the four sets of straight holes in the foundation steel frame 6, guide plate 3, and new intermediate rack in sequence; Tighten the mounting nuts at one end of the four mounting bolts to slowly push the new intermediate rack in initially, stopping when it is a short distance (e.g., 50mm) from the final installation position; Remove rack and pinion lifting tool 15 and continue to tighten the mounting nut to slowly push the new intermediate rack completely between its upper and lower adjacent rack segments; Install all rack screws 5 and long bolt group 10 removed from the intermediate rack to be replaced on the new intermediate rack, remove the mounting nuts, mounting bolts and hydraulic jack 12, and then install all short bolt group 4 removed from the intermediate rack to be replaced on the new intermediate rack. Remove the toothed base 1 and the temporary operating scaffold, and then reinstall the toothed screws 5 that were removed from the upper part of the adjacent toothed sections below the new middle toothed rack.

[0020] It should be noted that the rack screw 5 tightly connects the rack 2 to the guide plate 3, and the short bolt group 4 tightly connects the rack 2, the guide plate 3, and the foundation steel frame 6 in sequence; the long bolt group 10 tightly connects the rack 2 to the guide plate 3, tightly connects the guide plate 3 to the foundation steel frame 6, and tightly connects the foundation steel frame 6 to the first-phase foundation 7; the foundation steel frame 6 has a U-shaped structure, which is connected to the building reinforcement in the first-phase foundation 7, and high-grade concrete is poured in the middle of its interior to integrate with the hydraulic structures such as the second-phase foundation 8. Among them, the first-phase foundation 7 and the second-phase foundation 8 are poured with concrete, and the foundation mortar layer 9 between the foundation steel frame 6 and the guide plate 3 is poured with concrete mortar. The first-phase foundation 7, the second-phase foundation 8, and the foundation mortar layer 9 are all hydraulic structures and are fixed. It should also be noted that the bridge crane 11 is used as a lifting mechanism for replacing rack sections. The bridge crane 11 is used to lift rack sections, thereby reducing the amount of manual labor and making it easier to select different lifting speeds to suit different replacement stages.

[0021] It should also be noted that the hydraulic jack 12 serves as the ejection mechanism for replacing rack segments. As the power source for ejecting rack segments, a set of hydraulic jacks 12 is installed on both the left and right sides of the upper and lower ends when replacing rack segments. The hydraulic jack 12 is a conventional high-output power tool, which is simple to install and operate. In addition, the installation of a set of hydraulic jacks 12 on both the left and right sides of the upper and lower ends is conducive to evenly ejecting the rack segments.

[0022] In one embodiment, the tooth-removing base 1 is U-shaped, and the upper opening of the tooth-removing base 1 is engaged with the upper end of the middle toothed rack.

[0023] Specifically, the tooth removal base 1 is a double-webbed corbel structure with oblique U-shaped flanges. Two lifting holes 101 are provided on both sides of the upper end. Two reinforcing ribs are arranged on the lower side of the flanges, and two vertical and horizontal ribs are provided on each side of the webs to enhance the overall rigidity and strength of the tooth removal base 1. The upper end of the tooth removal base 1 is flush with the lower end of the tooth rack segment to be replaced, and the upper flange U-groove is engaged with the outer edge of the tooth rack 2.

[0024] It should be noted that when the rack segment to be replaced is ejected, the lower end face of the rack segment to be replaced smoothly moves to the upper end face of the rack disassembly base 1, and the rack disassembly base 1 can bear the weight of the rack segment to be replaced.

[0025] In one embodiment, the upper end of the tooth-removing base 1 is provided with a plurality of lifting holes 101 so that the bridge crane 11 can use wire rope 16 to connect to the lifting holes 101, thereby facilitating the lifting of the tooth-removing base 1 into or out of the bridge and reducing the manual burden.

[0026] In one embodiment, a plurality of mounting holes 102 for mounting screws are symmetrically provided on one side of the tooth-removing base 1 so as to be securely connected to the guide plate 3 by means of multiple screws.

[0027] In one embodiment, the diameter of one end of the push rod 13 is no larger than the straight hole on the base steel frame 6 and the guide plate 3, and the diameter of one end of the push rod 13 is larger than the straight hole on the intermediate rack. This ensures that when the rack segment is pushed out, it can adapt to the problem that the rack segment cannot be pushed into place directly at one time due to the space limitation of the base steel frame 6. This ensures that the push rod 13 passes smoothly through the straight hole on the base steel frame 6 and the guide plate 3 without passing through the straight hole on the rack segment. In turn, it ensures that the hydraulic jack 12 can transmit force to the rack 2 through the push rod 13, so as to ensure that the rack segment can be disassembled smoothly.

[0028] It should be noted that the top rod 13 is set in two sections and is made of round steel.

[0029] In one embodiment, several rack lifting devices 15 are symmetrically connected to both sides of the central rack.

[0030] It should be noted that the rack and pinion lifting device 15 has a fork-shaped structure, with a pin and a single-sided clamping plate. The fork-shaped plates on both sides and the pin are connected to the straight holes on the rack segment for installing the rack screws 5. The hole at the upper end of the rack and pinion lifting device 15 is connected to the wire rope 16 using a lifting U-shaped lifting device. This configuration ensures that when the rack segment is slightly pushed out, the rack segment can be connected to the bridge crane 11, so as to ensure that the rack segment maintains a vertical posture and is supported on the adjacent rack segment below and the rack dismantling base 1, thereby ensuring that the pushed-out rack segment does not overturn and cause a safety incident.

[0031] In addition, there are two steel wire ropes 16, one on the left and one on the right, which are symmetrically connected to the first set of straight holes for installing rack screws 5 on both sides of the rack segment and the hook of the bridge crane 11.

[0032] In one embodiment, the hydraulic jack 12 is fixedly connected to the foundation steel frame 6 via a pad 14, which is a wooden board.

[0033] Understandably, this setup ensures that when the rack segment is ejected, the center of the hydraulic jack 12 is raised to be flush with the straight hole, so that the hydraulic jack 12 can smoothly eject the rack segment after it is horizontal.

[0034] The rack replacement method for large rack and pinion climbing ship lifts also includes a method for replacing the top rack, which includes the following steps: Move the upper platform of the ship compartment to the middle of the adjacent rack section below the top rack to be replaced; Remove several rack screws 5 that connect the upper part of the adjacent rack segment below the top rack to be replaced to the guide plate 3; Open the cover plate on the platform layer between the upper end of the rack and the bridge machine 11; Operate the bridge crane 11, connect the tooth removal base 1 through the wire rope 16, and hoist the tooth removal base 1 to the upper end of the adjacent tooth rack segment below the top tooth rack to be replaced, so that the upper end face of the tooth removal base 1 and the upper end face of the adjacent tooth rack segment below the top tooth rack to be replaced are seamlessly horizontally joined, and the tooth removal base 1 is screwed to the position where several tooth rack screws 5 are removed on the guide plate 3. Temporary scaffolding was erected from the upper platform of the ship's compartment to the area around the top rack to be replaced; Remove the nuts and washers from all the long bolt groups 10 on the top rack to be replaced, and remove all the rack screws 5 on the top rack to be replaced; Remove the nuts and washers from all short bolt groups 4 on the top rack to be replaced, and pull out the screws from all short bolt groups 4 on the top rack to be replaced; Four sets of horizontally arranged hydraulic jacks 12 are fixed on the base steel frame 6. The rear ends of the four sets of hydraulic jacks 12 abut against the base steel frame 6. The front ends of the four sets of hydraulic jacks 12 are respectively horizontally fixed to four push rods 13. The four push rods 13 extend out and pass through the straight holes of the four short bolt groups 4 on the base steel frame 6 and the guide plate 3, and then act on the straight holes at the four corners of the top rack to be replaced. Simultaneously start four sets of hydraulic jacks 12 so that the top rack to be replaced is initially pushed out by the four push rods 13. When the middle rack to be replaced is fixed at a certain distance (e.g., 50mm), simultaneously close the four sets of hydraulic jacks 12 to stop pushing out. Connect the eye bolt to the top rack to be replaced, and the bridge crane 11 is connected to the eye bolt via the wire rope 16; Continue to simultaneously activate four sets of hydraulic jacks 12 to completely push out the top rack to be replaced from between its upper and lower adjacent rack segments; Operate bridge crane 11 to remove the top rack to be replaced; Disconnect the eye bolt from the top rack to be replaced, and then connect the eye bolt to the new top rack. Operate the bridge machine 11 to move the new top rack into the upper end face of the rack disassembly base 1; Activate hydraulic jack 12 to retract the four jack rods 13; Pass one end of each of the four mounting bolts through the four sets of straight holes in the foundation steel frame 6, guide plate 3, and new top rack in sequence; Tighten the mounting nuts at one end of the four mounting bolts to initially push in the new top rack; Remove the eye bolts and continue to tighten the mounting nuts to fully push the new top rack between its upper and lower adjacent rack segments; Install all rack screws 5 and long bolt group 10 removed from the top rack to be replaced on the new top rack, remove the mounting nuts, mounting bolts and hydraulic jack 12, and then install all short bolt group 4 removed from the top rack to be replaced on the new top rack. Remove the toothed base 1 and the temporary operating scaffold, and then reinstall the toothed screws 5 that were removed from the upper part of the adjacent toothed sections below the new top toothed rack.

[0035] The rack replacement method for large rack and pinion climbing ship lifts also includes a method for replacing the bottom rack, which includes the following steps: Move the cabin to the middle rack or the top rack; Install the tooth-removing base 1, and install an auxiliary horizontal plate on the tooth-removing base 1 so that the auxiliary horizontal plate is seamlessly horizontally engaged with the upper end face of the tooth-removing base 1 and the lower end face of the bottom toothed rack. Remove the nuts and washers from all the long bolt groups 10 on the bottom rack to be replaced, and remove all the rack screws 5 on the bottom rack to be replaced; Remove the nuts and washers from all short bolt groups 4 on the bottom rack to be replaced, and pull out the screws from all short bolt groups 4 on the bottom rack to be replaced; Four sets of horizontally arranged hydraulic jacks 12 are fixed on the base steel frame 6. The rear ends of the four sets of hydraulic jacks 12 abut against the base steel frame 6. The front ends of the four sets of hydraulic jacks 12 are respectively horizontally fixed to four push rods 13. The four push rods 13 extend out and pass through the straight holes of the four short bolt groups 4 on the base steel frame 6 and the guide plate 3, and then act on the straight holes at the four corners of the bottom rack to be replaced. Simultaneously activate four sets of hydraulic jacks 12 so that the bottom rack to be replaced is pushed out by four push rods 13, and then remove the bottom rack to be replaced. Move the new bottom rack into the upper surface of the toothed base 1; Activate hydraulic jack 12 to retract the four jack rods 13; Pass one end of each of the four mounting bolts through the four sets of straight holes in the foundation steel frame 6, guide plate 3, and new bottom rack in sequence; Tighten the mounting nuts at one end of the four mounting bolts to push in the new bottom rack; Install all rack screws 5 and long bolt group 10 removed from the bottom rack to be replaced on the new bottom rack; remove the mounting nuts, mounting bolts and hydraulic jack 12; and then install all short bolt group 4 removed from the bottom rack to be replaced on the new bottom rack. Remove the tooth-removing base 1 and the auxiliary horizontal plate.

[0036] In the description of this invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A method for replacing the rack in a large gear and rack climbing ship lift, characterized in that, The method for replacing the intermediate rack includes the following steps: Move the upper platform of the ship's compartment to the middle of the adjacent rack section below the intermediate rack to be replaced; Remove several rack screws (5) that connect the upper part of the adjacent rack segment below the intermediate rack to be replaced to the guide plate (3). Open the cover plate on the platform layer between the upper end of the rack and the bridge machine (11); The bridge crane (11) is operated and connected to the tooth removal base (1) via a steel wire rope (16). The tooth removal base (1) is hoisted to the upper end of the adjacent tooth segment below the intermediate tooth to be replaced, and the upper end face of the tooth removal base (1) is seamlessly horizontally connected to the upper end face of the adjacent tooth segment below the intermediate tooth to be replaced. The tooth removal base (1) is screwed to the position where several tooth screws (5) are removed on the guide plate (3). Remove the nuts and washers from all the long bolt groups (10) on the intermediate rack to be replaced, and remove all the rack screws (5) on the intermediate rack to be replaced. Remove the nuts and washers from all the short bolt groups (4) on the intermediate rack to be replaced, and pull out the screws from all the short bolt groups (4) on the intermediate rack to be replaced; Four sets of horizontally arranged hydraulic jacks (12) are fixed on the base steel frame (6). The rear ends of the four sets of hydraulic jacks (12) abut against the base steel frame (6). The front ends of the four sets of hydraulic jacks (12) are respectively horizontally fixed to four push rods (13). The four push rods (13) extend out and pass through the straight holes of the four short bolt groups (4) on the base steel frame (6) and the guide plate (3) respectively, and then act on the straight holes at the four corners of the intermediate rack to be replaced. Simultaneously start four sets of hydraulic jacks (12) so that the intermediate rack to be replaced is initially pushed out by the four push rods (13); Connect the rack and pinion hanger (15) to the intermediate rack to be replaced, and connect the bridge crane (11) to the rack and pinion hanger (15) via a wire rope (16); Continue to start the four sets of hydraulic jacks (12) simultaneously so that the intermediate rack to be replaced is completely pushed out from between its upper and lower adjacent rack segments; Operate the bridge crane (11) to remove the intermediate rack to be replaced; Disconnect the rack and pinion lifting tool (15) from the intermediate rack to be replaced, and then connect the rack and pinion lifting tool (15) to the new intermediate rack. Operate the bridge machine (11) to move the new intermediate rack into the upper end face of the rack disassembly base (1); Activate the hydraulic jack (12) to retract the four jack rods (13); Pass one end of each of the four mounting bolts through the four sets of straight holes in the foundation steel frame (6), guide plate (3), and new intermediate rack in sequence; Tighten the mounting nuts at one end of the four mounting bolts to initially push in the new intermediate rack; Remove the rack and pinion lifting tool (15) and continue to tighten the mounting nut to push the new intermediate rack completely between its upper and lower adjacent rack segments; Install all rack screws (5) and long bolt sets (10) removed from the intermediate rack to be replaced on the new intermediate rack, remove the mounting nuts, mounting bolts and hydraulic jacks (12), and then install all short bolt sets (4) removed from the intermediate rack to be replaced on the new intermediate rack. Remove the tooth base (1), and then reinstall the tooth screws (5) that were removed from the upper part of the adjacent toothed sections below the new middle toothed rack.

2. The rack replacement method for a large gear and rack climbing ship lift according to claim 1, characterized in that, After removing several rack screws (5) from the guide plate (3) and connecting the rack base (1) with the rack base, a temporary operating scaffold is erected from the upper platform of the ship compartment to the area around the intermediate rack to be replaced. When dismantling the tooth-removing base (1), dismantle the temporary operating scaffold.

3. The rack replacement method for a large gear and rack climbing ship lift according to claim 2, characterized in that, The tooth-removing base (1) is U-shaped in general, and the upper opening of the tooth-removing base (1) is engaged with the upper end of the middle toothed rack.

4. The rack replacement method for a large gear and rack climbing ship lift according to claim 2, characterized in that, The upper end of the tooth-removing base (1) is provided with several lifting holes (101).

5. The rack replacement method for a large gear and rack climbing ship lift according to claim 2, characterized in that, The tooth-removing base (1) has several mounting holes (102) on one side for mounting screws.

6. The rack replacement method for a large gear and rack climbing ship lift according to claim 2, characterized in that, The diameter of one end of the top rod (13) is no larger than the straight hole on the foundation steel frame (6) and the guide plate (3), and the diameter of one end of the top rod (13) is larger than the straight hole on the intermediate rack.

7. The rack replacement method for a large gear and rack climbing ship lift according to claim 2, characterized in that, Several rack lifting devices (15) are symmetrically connected to both sides of the central rack.

8. The rack replacement method for a large gear and rack climbing ship lift according to claim 2, characterized in that, The hydraulic jack (12) is fixedly connected to the foundation steel frame (6) through the pad (14).

9. A method for replacing the rack in a large gear and rack climbing ship lift according to any one of claims 2-8, characterized in that, The method for replacing the top rack includes the following steps: Move the upper platform of the ship compartment to the middle of the adjacent rack section below the top rack to be replaced; Remove several rack screws (5) that connect the upper part of the adjacent rack segment below the top rack to be replaced to the guide plate (3); Open the cover plate on the platform layer between the upper end of the rack and the bridge machine (11); The bridge crane (11) is operated and connected to the tooth removal base (1) via a steel wire rope (16). The tooth removal base (1) is hoisted to the upper end of the adjacent tooth segment below the top tooth to be replaced, and the upper end face of the tooth removal base (1) is seamlessly horizontally connected to the upper end face of the adjacent tooth segment below the top tooth to be replaced. The tooth removal base (1) is screwed to the position where several tooth screws (5) are removed on the guide plate (3). Remove the nuts and washers from all the long bolt groups (10) on the top rack to be replaced, and remove all the rack screws (5) on the top rack to be replaced. Remove the nuts and washers from all the short bolt groups (4) on the top rack to be replaced, and pull out the screws from all the short bolt groups (4) on the top rack to be replaced; Four sets of horizontally arranged hydraulic jacks (12) are fixed on the base steel frame (6). The rear ends of the four sets of hydraulic jacks (12) abut against the base steel frame (6). The front ends of the four sets of hydraulic jacks (12) are respectively horizontally fixed to four push rods (13). The four push rods (13) extend out and pass through the straight holes of the four short bolt groups (4) on the base steel frame (6) and the guide plate (3) respectively, and then act on the straight holes at the four corners of the top rack to be replaced. Simultaneously start four sets of hydraulic jacks (12) so that the top rack to be replaced is initially pushed out by the four push rods (13); Connect the eye bolt to the top rack to be replaced, and connect the bridge crane (11) to the eye bolt via the wire rope (16); Continue to start the four sets of hydraulic jacks (12) simultaneously so that the top rack to be replaced is completely pushed out from between its upper and lower adjacent rack segments; Operate the bridge crane (11) to remove the top rack to be replaced; Disconnect the eye bolt from the top rack to be replaced, and then connect the eye bolt to the new top rack. Operate the bridge machine (11) to move the new top rack into the upper end face of the rack disassembly base (1); Activate the hydraulic jack (12) to retract the four jack rods (13); Pass one end of each of the four mounting bolts through the four sets of straight holes in the foundation steel frame (6), guide plate (3), and new top rack in sequence; Tighten the mounting nuts at one end of the four mounting bolts to initially push in the new top rack; Remove the eye bolts and continue to tighten the mounting nuts to fully push the new top rack between its upper and lower adjacent rack segments; Install all rack screws (5) and long bolt sets (10) removed from the top rack to be replaced on the new top rack, remove the mounting nuts, mounting bolts and hydraulic jacks (12), and then install all short bolt sets (4) removed from the top rack to be replaced on the new top rack. Remove the tooth base (1), and then reinstall the rack screws (5) that were removed from the upper part of the adjacent rack section below the new top rack.

10. A method for replacing the rack in a large gear and rack climbing ship lift according to any one of claims 2-8, characterized in that, The method for replacing the bottom rack includes the following steps: Move the cabin to the middle rack or the top rack; Install the tooth-removing base (1) and install an auxiliary horizontal plate on the tooth-removing base (1) so that the auxiliary horizontal plate is seamlessly horizontally engaged with the upper end face of the tooth-removing base (1) and the lower end face of the bottom tooth rack. Remove the nuts and washers of all long bolt groups (10) on the bottom rack to be replaced, and remove all rack screws (5) on the bottom rack to be replaced. Remove the nuts and washers from all the short bolt groups (4) on the bottom rack to be replaced, and pull out the screws from all the short bolt groups (4) on the bottom rack to be replaced; Four sets of horizontally arranged hydraulic jacks (12) are fixed on the base steel frame (6). The rear ends of the four sets of hydraulic jacks (12) abut against the base steel frame (6). The front ends of the four sets of hydraulic jacks (12) are respectively horizontally fixed to four push rods (13). The four push rods (13) extend out and pass through the straight holes of the four short bolt groups (4) on the base steel frame (6) and the guide plate (3) respectively, and then act on the straight holes at the four corners of the bottom rack to be replaced. Simultaneously start four sets of hydraulic jacks (12) so that the bottom rack to be replaced is pushed out by four push rods (13) and then the bottom rack to be replaced is removed; Move the new bottom rack into the upper surface of the toothed base (1); Activate the hydraulic jack (12) to retract the four jack rods (13); Pass one end of each of the four mounting bolts through the four sets of straight holes in the foundation steel frame (6), guide plate (3), and new bottom rack in sequence; Tighten the mounting nuts at one end of the four mounting bolts to push in the new bottom rack; Install all rack screws (5) and long bolt sets (10) removed from the bottom rack to be replaced on the new bottom rack, remove the mounting nuts, mounting bolts and hydraulic jacks (12), and then install all short bolt sets (4) removed from the bottom rack to be replaced on the new bottom rack. Remove the tooth-removing base (1) and the auxiliary horizontal plate.

Images