Ship lift counterweight system pulley assembly overhauling method

Abstract

A ship lift counterweight system pulley assembly overhauling method comprises the steps that S1, a counterweight supporting device is hoisted; s2, a counterweight supporting device is arranged in place; s3, mounting a steel wire rope adjusting device; s4, counterweight weightlessness; s5, mounting a steel wire rope fixing device; s6, separating the steel wire rope from the pulley groove; s7, fixing the steel wire rope; s8, the pulley assembly is hoisted, disassembled and assembled; s9, reinstalling the steel wire rope into the pulley groove; s10, removing the steel wire rope fixing device; s11, enabling the balance weight to take effect; s12, the balance weight supporting device is dismantled; s13, adjusting the tensioning force of the steel wire rope; and S14, debugging the motivator. According to the ship lift counterweight system pulley assembly overhauling method, the pulley assembly overhauling efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the field of ship lift maintenance, in particular to a method for maintaining a pulley assembly of a ship lift counterweight system. Background Art

[0002] The counterweight system in the fully balanced vertical structure ship lift is an important device to ensure that the ship lift is in a balanced state. The ship lift counterweight system includes wire ropes and connecting components, pulley assemblies, counterweight regroups and guide devices, counterweight chains and guide devices. The pulley assembly is arranged in the top machine room, and the ship-bearing compartment is suspended by multiple groups of wire ropes. The wire ropes are arranged symmetrically on both sides of the ship-bearing compartment. The wire ropes bypass the pulley assembly and connect to the counterweight regroup, which is located in the counterweight well. Since the pulley group bears the weight of the ship-bearing compartment and the counterweight regroup at the same time, it is a key force-bearing component. In order to ensure the safe and stable operation of the counterweight system, the pulley assembly needs to be planned for maintenance.

[0003] As the pulley block is always under stress, a series of issues need to be considered during the maintenance process, including the locking support of the ship compartment, the maintenance support of the balancing group, the loosening and fixing of the wire rope, the unloading of the pulley block, the lifting and transportation of the maintenance tooling and the pulley assembly. As the components in the counterweight system are installed compactly, the maintenance operation space is narrow (the approximate size of the operable space is 8600×4000×20000mm), and the maintenance process is complicated (the pulley block was not overhauled in the early stage, and during the installation and commissioning of the ship lift equipment, the ship compartment was not filled with water and supported. The pulley block and the balancing group were installed first, and then the wire rope was installed. There was ample space for the layout of various lifting equipment and tooling, and the tooling was temporarily assembled on site and dismantled after the construction was completed to avoid affecting the normal operation of the ship lift), which makes the maintenance of the pulley block difficult. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a method for repairing a pulley assembly of a ship lift counterweight system, which can realize the disassembly, assembly and repair of the pulley assembly. The repair operation method can adapt to on-site operation requirements, improve repair efficiency and ensure operation safety.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A method for repairing a pulley assembly of a ship lift counterweight system comprises the following steps: S1. Hoisting of the counterweight support device: First, the ship carriage moves upward to the elevation h1, so that the top elevation of the counterweight is lower than the elevation of the maintenance platform 2; second, open the hoisting hole cover plate of the maintenance platform 1, use the maintenance bridge crane to hoist the counterweight support device to the oblique upper side of the maintenance platform 2, and adjust the position by the hand chain hoist at the anchor point to place the counterweight support device horizontally on the maintenance platform 2, and then the maintenance bridge crane withdraws from the hoisting hole of the counterweight support device; S2. Arrange the counterweight support device in place: the ship carriage descends to the elevation h2, so that the elevation of the bottom of the counterweight is higher than the elevation of the second maintenance platform, and the hand chain hoists on the anchor point 1 and the anchor point 2 are adjusted to make the counterweight support device span the counterweight well, so that the counterweight support device is arranged in place. After it is in place, ensure that the top of the counterweight support device is more than 100mm away from the top of the counterweight; S3. Installation of the wire rope adjustment device: First, install the crossbeam on the upper end of the cone sleeve; second, operate the two actuators to retract synchronously to the minimum stroke and then hinge with the crossbeam, and slowly extend the actuator until the front end lifting head hole coincides with the lifting ear on the deck of the ship compartment and then pass the shaft, and the actuator stops running to achieve mechanical self-locking; S4, counterweight weight loss: First, operate the lifting device located in the concave platform supported by the frame to make the counterweight frame weightless; secondly, operate the lifting device located in the concave platform supported by the counterweight block to make the counterweight block weightless, at this time, the wire rope remains in a naturally drooping state due to its own weight; S5. Installation of the wire rope fixing device: First, the support beam is installed and arranged on the load-bearing beam of the object lifting hole of the maintenance platform 1, so that the wire ropes on both sides of the pulley of the pulley assembly pass through the center of the support beam; secondly, the upper and lower sets of locking devices are installed on the two wire ropes on each side of the pulley assembly, and the locking device and the wire rope are locked by adjusting the locking screws; the lower set of locking devices is placed on the support plate of the support beam to bear the deadweight of the wire rope; the maintenance bridge crane hook is connected to the upper set of locking devices on the wire ropes on both sides of the pulley assembly, and the maintenance bridge crane can bear the deadweight of the wire rope in the pulley groove of the pulley assembly; S6, the wire rope is out of the pulley groove: operate the actuator cylinder in the wire rope adjustment device to retract synchronously with a small stroke, so that the second pin is in a natural state without stress; after removing the second pin, extend the actuator cylinder and the maintenance bridge crane to rise synchronously, so as to always ensure that the wire rope is in a tensioned and drooping state; when the wire rope is completely out of the pulley groove of the pulley assembly, the actuator cylinder and the maintenance bridge crane stop moving, and the actuator cylinder is in a mechanical self-locking state after stopping; S7, wire rope fixing: adjust the relative positions of the two wire ropes and the pulley groove of the pulley assembly in real time through the main and auxiliary hooks of the overhaul bridge crane, and operate the two wire ropes that have escaped from the groove section of the pulley assembly to the arc grooves in the first bracket and the second bracket respectively; the overhaul bridge crane hook is disengaged from the locking device to achieve complete separation of the wire rope from the pulley assembly; the wire rope is fixed and supported by the locking device, the first bracket and the second bracket; S8, lifting and disassembling of the pulley assembly: remove the limit clamps on both sides of the shaft of the old pulley assembly, use the overhaul bridge crane to lift the old pulley assembly out of the pulley support 1 and the pulley support 2, lift the new pulley assembly to the installation position and install the shaft limit clamps; S9. The wire rope is put back into the pulley groove: the crane hook is connected to the locking device, and the crane lifting wire rope is separated from the first bracket and the second bracket; during the lifting process of the wire rope, the relative position of the wire rope and the pulley groove of the pulley assembly is adjusted in real time through the auxiliary hook of the crane; when the wire rope is placed directly above the pulley groove, the crane hook drops to allow the wire rope to enter the groove; at the same time, the actuator cylinder in the wire rope adjustment device is operated to retract synchronously, and the crane stops when the wire rope is completely entered into the groove, and the actuator cylinder continues to move until the front end lifting head hole coincides with the lifting ear on the deck of the ship compartment and then stops, and the pin shaft is assembled into the hole; S10, dismantling the wire rope fixing device: dismantling the first bracket, the second bracket, the locking device and the support beam in sequence, so that the deadweight of the wire rope is carried by the pulley assembly; S11, counterweight takes effect: referring to step S4, operate the lifting devices located in the counterweight support and the counterweight frame in sequence, so that the counterweight support device is separated from the counterweight, and the separation distance is greater than 100mm, and reserve space for dismantling the counterweight support device; S12, dismantling the counterweight support device: referring to step S2, dismantle the counterweight support and frame support of the counterweight support device in sequence and place them on the second maintenance platform, and then referring to step S1, lift and transport the counterweight support and frame support of the counterweight support device to the material storage area of ​​the first maintenance platform; S13, wire rope tension adjustment: measure the horizontal height difference h3 on both sides of the counterweight frame, the center height difference h4 of each counterweight block, and the gap h5 between the lower buffer block and the bottom of the counterweight block. Adjust the wire rope tension according to the measured data to meet the following requirements: h3≤5mm, h4≤10mm, h5≤50mm, and the number of contacts between the upper buffer block and the top of each counterweight block is not less than 4; S14, engine debugging: the execution cylinder is extended so that the wire rope adjusting device is not stressed. After the ship compartment has been raised and lowered for many times, the values ​​of h3, h4 and h5 are remeasured. When the remeasured values ​​meet the requirements, the wire rope adjusting device is removed. If the remeasured values ​​do not meet the requirements, repeat step S13.

[0006] When adjusting the tension of the wire rope, for the counterweight frames and counterweight blocks whose h3, h4 and h5 are higher than the reference values, the actuator cylinder is retracted to put the wire rope in a tensioned state, and the tension value of the actuator cylinder is monitored in real time. When the tension value is greater than the deadweight of the counterweight frame and counterweight block connected to the wire rope, the actuator cylinder stops moving, and the basket screw is loosened. The loosening length is consistent with the falling height of the counterweight frame or counterweight block; for the counterweight frames and counterweight blocks whose h3, h4 and h5 are lower than the reference values, the actuator cylinder is retracted to put the wire rope in a tensioned state, and the basket screw is tightened. The hanging length is consistent with the falling height of the counterweight frame or counterweight block; the wire rope tension adjustment is carried out in multiple times. The basket screw is operated while the actuator cylinder is synchronously extended and retracted with a small stroke and the tension value is monitored to ensure that the operating basket screw is not subject to load.

[0007] The ship compartment and counterweight system includes a maintenance bridge crane, a pulley assembly, a maintenance platform one, a wire rope assembly, a maintenance platform two, a ship compartment and a counterweight; wherein the maintenance bridge crane is located in the machine room at the top of the ship lift, and is used to lift and transport the pulley assembly, the wire rope and the counterweight supporting device; the pulley assembly, the wire rope assembly, the ship compartment and the counterweight constitute the lifting system of the ship compartment; the maintenance platform one is installed with a wire rope fixing device, the maintenance platform two is installed with a counterweight supporting device, and a wire rope adjusting device is provided on the deck of the ship compartment.

[0008] The counterweight support device includes a frame support, multiple counterweight supports, a lifting device, anchor point one and anchor point two. Multiple groups of counterweight supports are placed side by side between the two groups of frame supports. The lifting device is located in the recesses of the frame support and the counterweight support. Anchor point one and anchor point two are respectively anchored on both sides of the counterweight well and are equipped with hand winches.

[0009] The wire rope fixing device includes a first bracket, a second bracket, a locking device and a support beam, wherein the lower part of the first bracket is plugged into and kept stable with the pulley support one, and the lower part of the second bracket is plugged into and kept stable with the pulley support two; the upper ends of the first bracket and the second bracket support the wire rope; the locking device is divided into two groups, upper and lower, which are respectively arranged on the wire rope, the upper group of locking devices lifts the wire rope, and the lower group of locking devices is located on the support beam, and the support beam is installed on the load-bearing beam of the lifting hole of the maintenance platform one.

[0010] The first bracket includes an arc groove 1, which is connected to an arc groove bracket 1, and two groups of transverse grooves 1 are arranged at intervals below the arc groove bracket 1. The two groups of longitudinal grooves are fixed to the two groups of transverse grooves 1 and form a through groove for the pulley support 1 to be inserted.

[0011] The second bracket includes an arc groove 2, which is connected to an arc groove bracket 2, and two groups of transverse grooves 2 are fixed at intervals at the lower end of the arc groove bracket 2, and the two groups of transverse grooves 2 are plugged into the plate body on the pulley support 2.

[0012] The locking device comprises a left clamping sleeve and a right clamping sleeve. The left clamping sleeve and the right clamping sleeve are both provided with lifting ears on the outside and vertical guide grooves on the inside. The wedge block is slidably arranged in the vertical guide groove and is driven to move up and down by a locking screw.

[0013] The support beam comprises a left support beam and a right support beam, which are detachably connected via a latch, support plates are relatively fixed at the upper ends of the left support beam and the right support beam, and a through hole is formed between the two support plates; the diameter of the through hole is larger than the steel wire rope and smaller than the outer diameter of the locking device.

[0014] The present invention provides a method for repairing a pulley assembly of a ship lift counterweight system, which has the following technical effects: 1) This device is used to support and lift the counterweight in a narrow space (size 8600×4000×20000mm) to ensure that the counterweight is in a weightless state and meet the maintenance conditions of the pulley assembly.

[0015] 2) The first bracket and the second bracket have a compact structure and can be quickly installed and positioned on the pulley support 1 and the pulley support 2. The arc-shaped groove bracket can be used to hold and support the wire rope and fix it firmly.

[0016] 3) The locking device can quickly lock and release the wire rope through the clamping force between the locking device and the wire rope, providing a lifting point and support for the wire rope when it is taken out of or put into the pulley assembly, facilitating the disassembly and adjustment of the pulley assembly during maintenance; in addition, the wedge block is embedded with a nylon coating to increase the contact friction of the wire rope while protecting the wire rope from rigid extrusion.

[0017] 4) This method standardizes the pulley assembly maintenance operation process, realizes the hoisting arrangement of the complete set of maintenance equipment, the fixed support of the wire rope, the tension adjustment, the weightless support of the counterweight and the installation deviation adjustment, ensures the safety of maintenance construction and improves the maintenance efficiency.

[0018] 5) The patent "heavy steel wire rope double jack tensioning device for ship lift" with application number "201520034486.0" discloses part of the contents of the steel wire rope adjusting device 3 in the present application, but the crossbeam and the actuator cylinder in the present application are different from those in the patent "201520034486.0". The crossbeam in the present application is directly connected to the upper end of the actuator cylinder through a pin shaft, and the nuts at both ends of the pin shaft play the role of fixing the crossbeam (31). Compared with the fixing structure using bolts and U-shaped clips respectively in the above-mentioned reference document, the structure is simpler, and the top of the cylinder is hinged by a pin shaft to prevent the cylinder from being subjected to radial force; the two actuator cylinders (32) have the functions of synchronous telescopic and arbitrary stroke mechanical self-locking, which is simpler and more reliable than the comparative patent using the first hydraulic jack and the second hydraulic jack to adjust the operation, and has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is the layout diagram of the ship-bearing compartment and the counterweight system in the present invention (the counterweight is at a low elevation).

[0020] Figure 2 This is the layout diagram of the ship-bearing compartment and counterweight system in the present invention (the counterweight is at a high altitude).

[0021] Figure 3 It is a schematic diagram of the connection between the wire rope assembly and the ship-carrying compartment in the present invention (the wire rope is in a tensioned state).

[0022] Figure 4It is a front view of the counterweight and the counterweight supporting device in the present invention.

[0023] Figure 5 It is a top view of the counterweight and the counterweight supporting device in the present invention.

[0024] Figure 6 This is a detailed view of the frame support arrangement in the present invention.

[0025] Figure 7 It is a detailed view of the arrangement of the counterweight support in the present invention.

[0026] Figure 8 It is a schematic diagram of the first lifting state of the counterweight supporting device in the present invention.

[0027] Fig. 9 It is a schematic diagram of the second lifting state of the counterweight supporting device in the present invention.

[0028] Fig.10 It is a schematic diagram of the third lifting state of the counterweight supporting device in the present invention.

[0029] Fig.11 It is a schematic diagram of the first installation arrangement state of the counterweight support device in the present invention.

[0030] Fig.12 It is a schematic diagram of the second installation arrangement state of the counterweight support device in the present invention.

[0031] Fig.13 It is a schematic diagram of the connection between the wire rope assembly and the ship-carrying compartment in the present invention (the wire rope is in a loosened state).

[0032] Fig.14 It is a schematic structural diagram of the steel wire rope fixing device in the present invention (first perspective).

[0033] Fig.15 Schematic diagram of the structure of the steel wire rope fixing device in the present invention (second viewing angle).

[0034] Fig.16 It is a front view of the steel wire rope fixing device in the present invention.

[0035] Fig.17 It is a left view of the steel wire rope fixing device in the present invention.

[0036] Fig.18 This is an installation layout diagram of the first bracket and the second bracket in the present invention.

[0037] Fig.19 Schematic diagram of the installation of the first bracket in the present invention (first viewing angle).

[0038] Fig. 20 Schematic diagram of the installation of the first bracket in the present invention (second viewing angle).

[0039] Fig.21 It is a schematic structural diagram of the second bracket in the present invention.

[0040] Fig. 22 Schematic diagram of the structure of the locking device in the present invention (closed state).

[0041] Fig.23 It is a structural schematic diagram of the locking device in the present invention (open state).

[0042] Fig.24 It is a structural schematic diagram of the support beam in the present invention (assembled state).

[0043] Fig.25 It is a structural schematic diagram of the support beam in the present invention (disassembled state). DETAILED DESCRIPTION

[0044] like Figure 1-23 As shown, a complete set of equipment for repairing the pulley assembly of the ship lift counterweight system includes a ship bearing compartment and counterweight system 1, a counterweight supporting device 2, a wire rope adjusting device 3 and a wire rope fixing device 4.

[0045] like Figure 1-2 As shown, the cabin and counterweight system 1 includes a maintenance bridge crane 11, a pulley assembly 12, a maintenance platform 13, a wire rope assembly 14, a maintenance platform 2 15, a cabin 16 and a counterweight 17.

[0046] like Figure 1 As shown, the maintenance bridge crane 11 is located on the machine room 6 at the top of the ship lift and is used for lifting and transporting the pulley assembly 12, the wire rope 1401 and the counterweight support device 2, so as to realize rapid maintenance of the pulley assembly 12.

[0047] like Figure 3 As shown, the wire rope assembly 14 includes a wire rope 1401, a cone sleeve 1402, a basket screw 1403 and a second pin 1404. Every two wire ropes 1401 pass around a pulley assembly 12. Cone sleeves 1402 are fixed at both ends of the wire rope 1401. The cone sleeve 1402 at one end is connected to the counterweight 17, and the cone sleeve 1402 at the other end is connected to the ship-carrying compartment connecting ear 7 through a basket screw 1403. The ship-carrying compartment connecting ear and the basket screw 1403 are fixed through the second pin 1404. By adjusting the basket screw 1403, the length deviation between multiple wire ropes 1401 can be compensated.

[0048] like Figure 4As shown, the counterweight 17 includes a counterweight frame 1701 and a counterweight block 1702, a plurality of groups of upper buffer blocks 1703 and lower buffer blocks 1704 are arranged in the counterweight frame 1701, the plurality of groups of counterweight blocks 1702 are placed between the upper buffer blocks 1703 and the lower buffer blocks 1704 of the counterweight frame 1701, and the counterweight 17 is restricted to move up and down in the counterweight well 5.

[0049] Multiple groups of counterweights 1702 are vertically placed side by side in the counterweight frame 1701, multiple groups of upper buffer blocks 1703 are fixed to the lower end surface of the upper crossbeam in the counterweight frame 1701 by bolts, and multiple groups of lower buffer blocks 1704 are fixed to the upper end surface of the lower crossbeam in the counterweight frame 1701 by bolts. When the counterweight 1702 and the counterweight frame 1701 are relatively displaced in the vertical direction, the counterweight 1702 contacts the upper buffer block 1703 or the lower buffer block 1704 and transmits the force to the counterweight frame 1701, and the upper buffer block 1703 or the lower buffer block 1704 acts as a limit and buffer for the counterweight 1702.

[0050] like Figure 5-7 As shown, the counterweight support device 2 is located on the maintenance platform 2 15 and is used to support and fix the counterweight 17. The counterweight support device 2 includes a frame support 21, a plurality of counterweight support 22, a lifting device 23, an anchor point 1 24 and an anchor point 25. The frame support 21 and the counterweight support 22 are box-type solid web structures and both have concave platforms and lifting ears. Multiple groups of counterweight support 22 are placed side by side between the two groups of frame supports 21.

[0051] The lifting device 23 is located in the recessed platform of the frame support 21 and the counterweight support 22; the anchor point 1 24 is anchored on the wall on one side of the counterweight well, and the anchor point 2 25 is anchored on the wall on the other side of the counterweight well, and hand winches are installed on the anchor point 1 24 and the anchor point 2 25.

[0052] like Figure 8-10 As shown, the ship-bearing compartment 16 moves upward to the elevation h1, so that the top elevation of the counterweight 17 is lower than the elevation of the maintenance platform 15, ensuring that the counterweight 17 does not occupy the hanging hole space between the maintenance platform 13 and the maintenance platform 15; the frame support 21 and the counterweight support 22 are hoisted to the oblique upper side of the maintenance platform 15 by the maintenance bridge crane 11, and the positions are adjusted by the hand chain hoist at the anchor point 1 24, and the frame support 21 and the counterweight support 22 are finally placed horizontally on the maintenance platform 15. The frame support 21 and the counterweight support 22 need to be hoisted separately due to limited space.

[0053] like Figure 11-12As shown, the ship-carrying compartment 16 descends to the elevation h2, so that the bottom elevation of the counterweight 17 is higher than the elevation of the maintenance platform 15, and the counterweight supporting device 2 does not interfere with the bottom of the counterweight 17 when it spans the counterweight well 5. The hand winches on the anchor point 1 24 and the anchor point 2 25 are respectively connected to the lifting ears at the front and rear ends of the counterweight supporting device 2. The hand winches are adjusted to make the counterweight supporting device 2 span the counterweight well 5.

[0054] like Fig.13 As shown, the wire rope adjustment device 3 is located on the deck of the ship-carrying box 16, and is used for the disassembly and assembly of the wire rope assembly 14 and the ship-carrying box 16 and the tension adjustment. The wire rope adjustment device 3 includes a crossbeam 31, an actuator cylinder 32 and a pin 1 33. The crossbeam 31 is arranged at the upper end of the cone sleeve 1402. One end of the two actuator cylinders 32 is hinged on the crossbeam 31, and the other end is fixed to the connecting ear hole of the ship-carrying box 16 through the pin 1 33. The crossbeam 31 is connected by two channel steels, and the wire rope 1401 passes through the aperture in the middle of the crossbeam 31. The actuator cylinder 32 is two electric actuator cylinders with synchronous telescopic, threaded mechanical self-locking, tension and pressure detection and overload protection control functions. The action of the actuator cylinder 32 puts the pin 2 1404 in a natural stress-free state, so as to realize the disassembly and assembly of the wire rope 1401 and the tension adjustment.

[0055] The wire rope fixing device 4 is located on the maintenance platform 13 and is used for fixing and hoisting support of the wire rope 1401. The wire rope fixing device 4 includes a first bracket 41, a second bracket 42, a locking device 43 and a support beam 44. The first bracket 41 is mounted on the pulley support 1 45, and the second bracket 42 is mounted on the pulley support 2 46. The first bracket 41 and the second bracket 42 are used to hold the wire rope 1401 removed from the rope groove of the pulley assembly 12. In the above device, there are two groups of first brackets 41 and multiple groups of second brackets 42. In actual maintenance, the maintenance of eight groups of pulleys is not carried out at the same time; after one pulley is overhauled, it is reset, and another pulley is overhauled again until the eight pulleys are overhauled.

[0056] An upper and a lower set of locking devices 43 are arranged on each steel wire rope 1401 on both sides of the pulley assembly 12, wherein the upper locking device 43 is used for lifting the steel wire rope, and the lower locking device 43 is located on the support beam 44, which is used to bear the dead weight of the steel wire rope 1401. The support beam 44 is installed on the load-bearing beam of the lifting hole of the maintenance platform 13.

[0057] like Figure 19-20 As shown, the first bracket 41 includes an arc slot 1 4101, an arc slot support 1 4102, a transverse clamping slot 1 4103, a connecting plate 1 4104 and a longitudinal clamping slot 4105. The arc slot 1 4101 is fixed above the arc slot support 1 4102, and each arc slot 1 4101 is provided with a steel wire rope.

[0058] The two groups of transverse slots 1 4103 are located at the lower end surface of the arc-shaped slot support 1 4102, and the transverse slots 1 4103 are fixed by a connecting plate 1 4104. The two groups of longitudinal slots 4105 are fixedly connected to the transverse slots 1 4103 by an external rib plate. The first bracket 41 can be inserted into the pulley support 1 45 through the transverse slots 1 4103 and the longitudinal slots 4105, and can achieve self-stable support and position limiting through the pulley support 1 45.

[0059] Preferably, a rubber pad is embedded in the arc-shaped groove 1 4101 for holding and supporting the steel wire rope 1401 .

[0060] like Fig.21 As shown, the second bracket 42 includes an arc groove 2 4201, an arc groove support 2 4202, a transverse clamping groove 2 4203 and a connecting plate 2 4204. The arc groove 2 4201 is fixed above the arc groove support 2 4202, and two groups of transverse clamping grooves 2 4203 are located on the lower end surface of the arc groove support 2 4202. The transverse clamping grooves 2 4203 and the arc groove support 2 4202 are fixedly connected by an external rib plate, and the two transverse clamping grooves 2 4203 are fixed by a connecting plate 1 4104. The second bracket 42 is plugged into the pulley support 2 46 through the two left and right transverse clamping grooves 2 4203 to achieve self-stable support and position limiting.

[0061] like Figure 22-23 As shown, the locking device 43 includes a left clamping sleeve 4301, a right clamping sleeve 4302, a wedge 4303, a lifting lug 4304 and a locking screw 4305. The left clamping sleeve 4301 and the right clamping sleeve 4302 are hinged on one side by a pin and can rotate and open and close along the axis of the pin, and the left clamping sleeve 4301 and the right clamping sleeve 4302 are closed and locked by bolts on the other side. Vertical guide grooves are processed on the inner walls of the left clamping sleeve 4301 and the right clamping sleeve 4302, and the two wedges 4303 move up and down along the guide grooves. The outer wall of the wedge 4303 matches the inner arc surface of the corresponding left clamping sleeve 4301 or the right clamping sleeve 4302, and the inner wall of the wedge 4303 is a conical surface. The conical surfaces of the two wedges 4303 form a conical hole, and the small aperture side faces downward. The locking screw 4305 is vertically threaded with the wedge 4303.

[0062] The locking screw 4305 is first inserted into the U-shaped through hole of the wedge block 4303, and then assembled with the threaded holes in the left clamping sleeve 4301 and the right clamping sleeve 4302. By adjusting the locking screw 4305, the arc surfaces of the left clamping sleeve 4301 and the right clamping sleeve 4302 are in contact with and tightened with the wire rope.

[0063] By rotating the locking screw 4305, the wedge block 4303 can be moved up and down relative to the left clamping sleeve 4301 or the right clamping sleeve 4302. Since the left and right wedge blocks 4303 form conical holes, the clamping force between the wedge block 4303 and the wire rope 1401 can be adjusted by driving the wedge block 4303 up and down through the locking screw 4305, so as to achieve the locking and loosening of the locking device 43 and the wire rope 1401.

[0064] Preferably, the wedge block 4303 is embedded with a nylon coating to increase the contact friction of the steel wire rope 1401 while protecting the steel wire rope 1401 from rigid extrusion, and the lifting lug 4304 is used for lifting the steel wire rope 1401.

[0065] like Figure 24-25 As shown, the support beam 44 includes a left support beam 4401, a right support beam 4402, a latch 4403 and a support plate 4404. The left support beam 4401 and the right support beam 4402 are provided with ear plates with holes on the left and right sides of the opposite sides, and the left support beam 4401 and the right support beam 4402 are detachably connected by two latches 4403. The support plate 4404 is correspondingly fixed on the upper end surface of the left support beam 4401 or the right support beam 4402, and an aperture structure is formed in the center of the two support plates 4404, and the aperture ensures that the steel wire rope 1401 can pass freely and restricts the locking device 43 from passing through.

[0066] A method for repairing a pulley assembly of a ship lift counterweight system comprises the following steps: S1. Hoisting of the counterweight support device 2: The counterweight support device 2 is initially located in the material storage area of ​​the maintenance platform 13. First, the ship carriage 16 moves upward to the elevation h1, so that the top elevation of the counterweight 17 is lower than the elevation of the maintenance platform 2 15; secondly, the hoisting hole cover at the maintenance platform 13 is opened, and the frame support 21 and the counterweight support 22 are hoisted to the oblique upper side of the maintenance platform 2 15 by the maintenance bridge crane 11, and the position is adjusted by the hand chain hoist at the anchor point 1 24, so that the frame support 21 and the counterweight support 22 are horizontally placed on the maintenance platform 2 15, and then the maintenance bridge crane 11 withdraws from the hoisting hole, as shown in FIG. Figure 8-10 shown.

[0067] S2. Arrange the counterweight support device 2 in place: the ship carriage 16 descends to the elevation h2, so that the elevation of the bottom of the counterweight 17 is higher than the elevation of the maintenance platform 2 15, and the hand chain hoists on the anchor point 1 24 and the anchor point 2 25 are adjusted to make the counterweight support device 2 span the counterweight well 5, so that the counterweight support device 2 is arranged in place. After it is in place, ensure that the top of the counterweight support device 2 is greater than 100mm from the top of the counterweight 17. Figure 11-12 shown.

[0068] S3, installation of the wire rope adjustment device 3: first install the crossbeam 31 on the upper end of the cone sleeve 1402, then operate the two actuator cylinders 32 to retract synchronously to the minimum stroke and then articulate with the crossbeam 31, the actuator cylinder 32 slowly extends until the front end lifting head hole coincides with the lifting ear on the deck of the ship compartment 16 and then passes through the shaft, and the actuator cylinder 32 stops running to achieve mechanical self-locking, such as Figure 3 shown.

[0069] S4, the counterweight 17 loses weight: first, the lifting device 23 located in the concave platform of the frame support 21 is operated to make the counterweight frame 1701 lose weight; secondly, the lifting device 23 located in the concave platform of the counterweight block support 22 is operated to make the counterweight block 1702 lose weight, and at this time, the wire rope 1401 remains in a naturally drooping state due to its own weight; The weightlessness mentioned here means that the weight is changed from being borne by the original steel wire rope to being borne by the support, and the steel wire rope does not generate tension.

[0070] When the counterweight frame 1701 loses weight, the counterweight block 1702 does not lose weight. The counterweight frame 1701 only limits the counterweight block 1702 and can bear part of the weight under extreme working conditions. The weight of the counterweight block 1702 is mainly borne by the wire rope, fixed pulley and cabin. When the counterweight block 1702 and the counterweight frame 1701 are relatively displaced in the vertical direction, the counterweight block 1702 contacts the upper buffer block 1703 or the lower buffer block 1704 and transfers part of the force to the counterweight frame 1701.

[0071] The two operations of extending the lifting device 23 are to first ensure that the counterweight frame 1701 is weightless, and then the balancing weight block 1702 is separated from the upper buffer block 1703 and the lower buffer block 1704, and then operate the lifting device 23 located in the concave platform of the balancing weight block support 22 to make the balancing weight block 1702 weightless. The initial state of the lifting device 23 is that the oil cylinder is retracted.

[0072] The reasons for not performing weightlessness at the same time: 1) Synchronous control of the lifting and lowering of all jacking devices requires high system control, and the synchronization accuracy cannot be guaranteed. Operating two groups separately is simple and has high reliability; 2) Performing weightlessness of the counterweight frame first and then the counterweight block can ensure that the upper buffer block is not subjected to stress and protect the buffer block.

[0073] S5. Installation of the wire rope fixing device 4: First, the support beam 44 is installed and arranged on the load-bearing beam of the object hanging hole of the maintenance platform 13, so that the wire ropes on both sides of the pulley of the pulley assembly 12 pass through the center of the support beam 44; secondly, the upper and lower sets of locking devices 43 are installed on the two wire ropes on each side of the pulley assembly 12, and the locking of the locking device 43 and the wire rope 1401 is achieved by adjusting the locking screws 4305; the lower set of locking devices 43 is placed on the support plate 4404 of the support beam 44, which is used to bear the dead weight of the wire rope 1401; the upper set of locking devices 43 on the wire rope 1401 on both sides of the pulley assembly 12 are connected with the hook of the maintenance bridge crane 11, and the maintenance bridge crane 11 can bear the dead weight of the wire rope in the pulley groove of the pulley assembly 12; S6, the steel wire rope is disengaged from the pulley groove: the actuator cylinder 32 in the steel wire rope adjustment device 3 is operated to synchronously retract with a small stroke, so that the second pin shaft 1404 is in a naturally stress-free state; after the second pin shaft 1404 is removed, the actuator cylinder 32 is extended and the bridge crane 11 is synchronously lifted, so that the steel wire rope 1401 is always in a tensioned and drooping state; when the steel wire rope 1401 is completely disengaged from the pulley groove of the pulley assembly 12, the actuator cylinder 32 and the bridge crane 11 stop moving, and the actuator cylinder 32 is in a mechanical self-locking state after stopping; S7, fixing of the steel wire rope: adjusting the relative positions of the two steel wire ropes 1401 and the pulley grooves of the pulley assembly 12 in real time through the main and auxiliary hooks of the overhaul bridge crane 11, operating the two steel wire ropes 1401 that have escaped from the groove section of the pulley assembly 12 to the arc grooves in the first bracket 41 and the second bracket 42 respectively, disengaging the hook of the overhaul bridge crane 11 from the locking device 43, realizing that the steel wire rope 1401 is completely separated from the pulley assembly 12, and the steel wire rope 1401 is fixedly supported by the locking device 43, the first bracket 41 and the second bracket 42; S8, lifting and disassembling the pulley assembly: remove the limit clamps on both sides of the shaft of the old pulley assembly 12, use the maintenance bridge crane 11 to lift the old pulley assembly 12 out of the pulley support 1 45 and the pulley support 2 46, lift the new pulley assembly 12 to the installation position and install the shaft limit clamps; S9, the wire rope is put back into the pulley groove: the hook of the maintenance bridge crane 11 is connected to the locking device 43, and the lifting wire rope 1401 of the maintenance bridge crane 11 is separated from the first bracket 41 and the second bracket 42; during the lifting process of the wire rope 1401, the relative position of the wire rope 1401 and the pulley groove of the pulley assembly 12 is adjusted in real time through the auxiliary hook of the maintenance bridge crane 11, and when the wire rope 1401 is placed directly above the pulley groove, the hook of the maintenance bridge crane 11 falls to make the wire rope 1401 enter the groove; at the same time, the actuator cylinder 32 in the adjustment device 3 is operated to retract synchronously, and the maintenance bridge crane 11 stops when the wire rope 1401 is completely entered into the groove, and the actuator cylinder 32 continues to move until the front end lifting head hole coincides with the lifting ear on the deck of the ship compartment 16 and then stops, and the pin shaft 33 is assembled into the hole; S10, dismantling the steel wire rope fixing device: dismantling the first bracket 41, the second bracket 42, the locking device 43 and the support beam 44 in sequence, so that the weight of the steel wire rope 1401 is carried by the pulley assembly 12; S11, counterweight takes effect: Referring to step S4, the lifting device 23 located between the counterweight support 22 and the counterweight frame 1701 is operated in sequence to separate the counterweight support device 2 from the counterweight 17, the separation distance being greater than 100 mm, and a space for dismantling the counterweight support device 2 is reserved; Here, the lifting device 23 located on the counterweight support 22 and the counterweight frame support 21 retracts, causing the counterweight frame 1701 and the counterweight 1702 to gradually fall. At the same time, the connecting steel wire ropes on the counterweight frame 1701 and the counterweight 1702 are gradually straightened and the weight is borne by the fixed pulley. When the counterweight frame 1701 and the counterweight 1702 stop falling, their weight is completely borne by the steel wire ropes, and the lifting device 23 continues to retract until a certain distance is maintained between the lifting device 23 and the counterweight frame 1701 and the counterweight 1702.

[0074] S12, dismantling the counterweight support device 2: referring to step S2, dismantle the counterweight support 22 and the frame support 21 in sequence and place them on the maintenance platform 2 15, and then referring to step S1, lift and transport the counterweight support 22 and the frame support 21 to the material storage area of ​​the maintenance platform 1 13; S13. Adjustment of wire rope tension: measure the horizontal height difference h3 on both sides of the counterweight frame 1701, the center height difference h4 of each counterweight block 1702, and the bottom gap h5 between the lower buffer block 1704 and the counterweight block 1702. Adjust the wire rope tension according to the measured data to meet the following requirements: h3≤5mm, h4≤10mm, h5≤50mm, and the number of contacts between the upper buffer block 1703 and the top of each counterweight block 1702 is not less than 4.

[0075] When adjusting the tension of the wire rope, for the counterweight frame 1701 and the counterweight block 1702 whose h3, h4 and h5 are higher than the reference value, the actuator cylinder 32 is retracted to put the wire rope 1401 in a tensioned state, and the tension value of the actuator cylinder 32 is monitored in real time. When the tension value is greater than the deadweight of the counterweight frame 1701 and the counterweight block 1702 connected to the wire rope 1401, the actuator cylinder 32 stops moving, and the basket screw 1403 is loosened. The loosening length is consistent with the falling height of the counterweight frame 1701 or the counterweight block 1702; for the counterweight frame 1701 and the counterweight block 1702 whose h3, h4 and h5 are lower than the reference value, the actuator cylinder 32 is retracted to put the wire rope 1401 in a tensioned state, and the basket screw 1403 is tightened. The hanging length is consistent with the falling height of the counterweight frame 1701 or the counterweight block 1702. The tension adjustment of the wire rope 1401 is carried out in multiple times, and the operating basket screw 1403 simultaneously executes the small stroke synchronous extension and retraction of the cylinder 32 and monitors the tension value to ensure that the operating basket screw 1403 is not loaded.

[0076] S14, engine debugging: the execution cylinder 32 is extended to make the wire rope adjusting device 3 free from stress. After the ship-bearing compartment 16 is lifted and lowered several times, the values ​​of h3, h4 and h5 are re-measured. When the re-measured values ​​meet the requirements, the wire rope adjusting device 3 is removed. If the re-measured values ​​do not meet the requirements, repeat step S13.

Claims

1. A method for repairing a pulley assembly of a ship lift counterweight system, comprising the following steps: S1. Hoisting of the counterweight support device (2): First, the ship carriage (16) is moved upward to the elevation h1, so that the top elevation of the counterweight (17) is lower than the elevation of the second maintenance platform (15); second, the cover plate of the hoisting hole at the first maintenance platform (13) is opened, and the counterweight support device (2) is hoisted to the oblique upper side of the second maintenance platform (15) by the maintenance bridge crane (11), and then the position is adjusted by the hand chain hoist at the anchor point (24) so ​​that the counterweight support device (2) is placed horizontally on the second maintenance platform (15), and then the maintenance bridge crane (11) is withdrawn from the hoisting hole of the counterweight support device (2); S2. The counterweight support device (2) is arranged in place: the ship carriage (16) is lowered to the elevation h2, so that the elevation of the bottom of the counterweight (17) is higher than the elevation of the second maintenance platform (15), and the hand chain hoists on the first anchor point (24) and the second anchor point (25) are adjusted so that the counterweight support device (2) spans the counterweight well (5), so that the counterweight support device (2) is arranged in place. After the counterweight support device (2) is in place, the top of the counterweight support device (2) is ensured to be greater than 100 mm away from the top of the counterweight (17); S3. Installation of the wire rope adjustment device (3): First, install the crossbeam (31) on the upper end of the cone sleeve (1402); second, operate the two actuator cylinders (32) to synchronously retract to the minimum stroke and then articulate with the crossbeam (31); slowly extend the actuator cylinder (32) until the front end lifting head hole coincides with the lifting ear on the deck of the ship support compartment (16) and then pass the shaft; after the actuator cylinder (32) stops running, mechanical self-locking is achieved; S4, the counterweight (17) loses weight: first, the lifting device (23) located in the concave platform of the frame support (21) is operated to make the counterweight frame (1701) lose weight; secondly, the lifting device (23) located in the concave platform of the counterweight block support (22) is operated to make the counterweight block (1702) lose weight, and at this time, the steel wire rope (1401) remains in a naturally drooping state due to its own weight; S5. Installation of the steel wire rope fixing device (4): First, the support beam (44) is installed and arranged on the load-bearing beam of the object hanging hole of the maintenance platform (13), so that the steel wire ropes on both sides of the pulley of the pulley assembly (12) pass through the center of the support beam (44); secondly, the upper and lower sets of locking devices (43) are installed on the two steel wire ropes on each side of the pulley assembly (12), and the locking devices (43) and the steel wire ropes (1401) are locked by adjusting the locking screws (4305); the lower set of locking devices (43) is placed on the support plate (4404) of the support beam (44) to bear the deadweight of the steel wire ropes (1401); the upper set of locking devices (43) on the steel wire ropes (1401) on both sides of the pulley assembly (12) are connected to the hook of the maintenance bridge crane (11), and the maintenance bridge crane (11) bears the deadweight of the steel wire ropes in the pulley groove of the pulley assembly (12); S6, the steel wire rope is disengaged from the pulley groove: the actuator cylinder (32) in the steel wire rope adjustment device (3) is operated to synchronously retract with a small stroke, so that the second pin shaft (1404) is in a naturally stress-free state; after the second pin shaft (1404) is removed, the actuator cylinder (32) is extended and the maintenance bridge crane (11) is simultaneously lifted, so that the steel wire rope (1401) is always in a tensioned and drooping state; when the steel wire rope (1401) is completely disengaged from the pulley groove of the pulley assembly (12), the actuator cylinder (32) and the maintenance bridge crane (11) stop moving, and the actuator cylinder (32) is in a mechanical self-locking state after stopping; S7, fixing of the steel wire rope: adjusting the relative positions of the two steel wire ropes (1401) and the pulley grooves of the pulley assembly (12) in real time through the main and auxiliary hooks of the overhaul crane (11), and operating the two steel wire ropes (1401) that have escaped from the groove section of the pulley assembly (12) to the arc grooves in the first bracket (41) and the second bracket (42) respectively; disengaging the overhaul crane (11) hook from the locking device (43) to achieve complete separation of the steel wire rope (1401) from the pulley assembly (12); the steel wire rope (1401) is fixedly supported by the locking device (43), the first bracket (41) and the second bracket (42); S8, lifting and disassembling the pulley assembly: remove the limit clamps on both sides of the shaft of the old pulley assembly (12), use the maintenance bridge crane (11) to lift the old pulley assembly (12) out of the pulley support 1 (45) and the pulley support 2 (46), lift the new pulley assembly (12) to the installation position and install the shaft limit clamps; S9, reinstalling the steel wire rope into the pulley groove: the hook of the maintenance bridge crane (11) is connected to the locking device (43), and the lifting steel wire rope (1401) of the maintenance bridge crane (11) is separated from the first bracket (41) and the second bracket (42); during the lifting process of the steel wire rope (1401), the relative position of the steel wire rope (1401) and the pulley groove of the pulley assembly (12) is adjusted in real time by the auxiliary hook of the maintenance bridge crane (11); when the steel wire rope (1401) is lifted, the relative position of the steel wire rope (1401) and the pulley groove of the pulley assembly (12) is adjusted; 01) is placed just above the pulley groove, the hook of the maintenance bridge crane (11) falls down to allow the wire rope (1401) to enter the groove; at the same time, the actuator cylinder (32) in the wire rope adjustment device (3) is operated to retract synchronously, and when the wire rope (1401) is completely entered into the groove, the maintenance bridge crane (11) stops moving, and the actuator cylinder (32) continues to move until the front end lifting head hole coincides with the lifting ear on the deck of the ship support box (16) and then stops, and the pin shaft (33) is assembled into the hole; S10, dismantling the steel wire rope fixing device: dismantling the first bracket (41), the second bracket (42), the locking device (43) and the support beam (44) in sequence, so that the deadweight of the steel wire rope (1401) is carried by the pulley assembly (12); S11, counterweight activation: Referring to step S4, the lifting device (23) located in the counterweight support (22) and the counterweight frame (1701) is operated in sequence to separate the counterweight support device (2) from the counterweight (17), the separation distance being greater than 100 mm, and space is reserved for the removal operation of the counterweight support device (2); S12, dismantling the counterweight support device (2): referring to step S2, dismantle the counterweight support (22) and the frame support (21) of the counterweight support device (2) in sequence and place them on the second maintenance platform (15); then referring to step S1, lift the counterweight support (22) and the frame support (21) of the counterweight support device (2) and transport them to the material storage area of ​​the first maintenance platform (13); S13, wire rope tension adjustment: measure the horizontal height difference h3 on both sides of the counterweight frame (1701), the center height difference h4 of each counterweight block (1702), and the bottom gap h5 between the lower buffer block (1704) and the counterweight block (1702), and adjust the wire rope tension according to the measured data to meet the following conditions: h3≤5mm, h4≤10mm, h5≤50mm, and the number of contacts between the upper buffer block (1703) and the top of each counterweight block (1702) is not less than 4; S14, engine debugging: the actuator cylinder (32) is extended so that the wire rope adjusting device (3) is not subjected to force. After the ship-bearing compartment (16) is raised and lowered several times, the values ​​of h3, h4 and h5 are re-measured. When the re-measured values ​​meet the requirements, the wire rope adjusting device (3) is removed. If the re-measured values ​​do not meet the requirements, step S13 is repeated.

2. A method for repairing a pulley assembly of a ship lift counterweight system according to claim 1, characterized in that: When adjusting the tension of the wire rope, for the counterweight frame (1701) and the counterweight block (1702) whose h3, h4 and h5 are higher than the reference value, the actuator cylinder (32) is retracted to put the wire rope (1401) in a tensioned state, and the tension value of the actuator cylinder (32) is monitored in real time. When the tension value is greater than the deadweight of the counterweight frame (1701) and the counterweight block (1702) connected to the wire rope (1401), the actuator cylinder (32) stops moving, and the turnbuckle (1403) is loosened. The loosening length is proportional to the falling height of the counterweight frame (1701) or the counterweight block (1702). The balance weight frame (1701) and the counterweight block (1702) whose values ​​of h3, h4 and h5 are lower than the reference value are retracted by the actuator cylinder (32) to put the wire rope (1401) in a tensioned state, and the turnbuckle (1403) is tightened, so that the hanging length is consistent with the falling height of the balance weight frame (1701) or the counterweight block (1702); the tension adjustment of the wire rope (1401) is performed in multiple times, and the turnbuckle (1403) is operated while the actuator cylinder (32) is extended and retracted synchronously with a small stroke and the tension value is monitored to ensure that the operating turnbuckle (1403) is not subjected to load.

3. A method for repairing a pulley assembly of a ship lift counterweight system according to claim 2, characterized in that: The ship compartment and counterweight system (1) comprises a maintenance bridge crane (11), a pulley assembly (12), a maintenance platform 1 (13), a wire rope assembly (14), a maintenance platform 2 (15), a ship compartment (16) and a counterweight (17); wherein the maintenance bridge crane (11) is located in the machine room at the top of the ship lift, and is used to lift and transport the pulley assembly (12), the wire rope (1401) and the counterweight supporting device (2); the pulley assembly (12), the wire rope assembly (14), the ship compartment (16) and the counterweight (17) constitute a lifting system of the ship compartment (16); the maintenance platform 1 (13) is installed with a wire rope fixing device (4), the maintenance platform 2 (15) is installed with a counterweight supporting device (2), and a wire rope adjusting device (3) is provided on the deck of the ship compartment (16).

4. A method for repairing a pulley assembly of a ship lift counterweight system according to claim 3, characterized in that: The counterweight support device (2) comprises a frame support (21), a plurality of counterweight supports (22), a lifting device (23), an anchor point one (24) and an anchor point two (25), wherein the plurality of counterweight supports (22) are placed side by side between the two groups of frame supports (21); the lifting device (23) is located in the recesses of the frame support (21) and the counterweight support (22), and the anchor point one (24) and the anchor point two (25) are respectively anchored on both sides of the counterweight well and are equipped with hand winches.

5. A method for repairing a pulley assembly of a ship lift counterweight system according to claim 3, characterized in that: The steel wire rope fixing device (4) comprises a first bracket (41), a second bracket (42), a locking device (43) and a support beam (44), wherein the lower portion of the first bracket (41) is plugged into and stabilized by a pulley support 1 (45), and the lower portion of the second bracket (42) is plugged into and stabilized by a pulley support 2 (46); the upper ends of the first bracket (41) and the second bracket (42) support the steel wire rope; the locking device (43) is divided into two groups, upper and lower, and is arranged on the steel wire rope respectively; the upper group of locking devices (43) is used to lift the steel wire rope, and the lower group of locking devices (43) is located on the support beam (44), and the support beam (44) is installed on the load-bearing beam (7) of the lifting hole of the maintenance platform 1 (13).

6. A method for repairing a pulley assembly of a ship lift counterweight system according to claim 5, characterized in that: The first bracket (41) comprises an arc-shaped groove one (4101), the arc-shaped groove one (4101) is connected to the arc-shaped groove bracket one (4102), two groups of transverse grooves one (4103) are arranged at intervals below the arc-shaped groove bracket one (4102), and the two groups of longitudinal grooves (4105) are fixed to the two groups of transverse grooves one (4103) to form a through groove for the pulley support one (45) to be inserted.

7. A method for repairing a pulley assembly of a ship lift counterweight system according to claim 5, characterized in that: The second bracket (42) comprises an arc-shaped groove 2 (4201), the arc-shaped groove 2 (4201) is connected to the arc-shaped groove support 2 (4202), and two groups of transverse grooves 2 (4203) are fixed at intervals at the lower end of the arc-shaped groove support 2 (4202), and the two groups of transverse grooves 2 (4203) are plugged into the plate body on the pulley support 2 (46).

8. A method for repairing a pulley assembly of a ship lift counterweight system according to claim 5, characterized in that: The locking device (43) comprises a left clamping sleeve (4301) and a right clamping sleeve (4302). The left clamping sleeve (4301) and the right clamping sleeve (4302) are both provided with lifting ears (4304) on the outside and vertical guide grooves on the inside. The wedge block (4303) is slidably arranged in the vertical guide groove and is driven to move up and down by a locking screw (4305).

9. A method for repairing a pulley assembly of a ship lift counterweight system according to claim 5, characterized in that: The support beam (44) comprises a left support beam (4401) and a right support beam (4402); the left support beam (4401) and the right support beam (4402) are detachably connected via a latch (4403); support plates (4404) are relatively fixed at the upper ends of the left support beam (4401) and the right support beam (4402); the two support plates (4404) form a through hole; the diameter of the through hole is larger than the steel wire rope and smaller than the outer diameter of the locking device (43).

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