An efficient wire rope threading process for large-tonnage portal cranes

Abstract

The present application relates to an efficient wire rope threading process for large-tonnage portal cranes, which is applied in the field of hoisting machinery. It includes the following steps: the luffing wire rope threading step, the main hoist wire rope threading step, and the auxiliary hoist wire rope threading step. After the main hoist wire rope threading step is completed, a transfer device is used to transfer the rope drum wound with the auxiliary hoist wire guiding rope and the auxiliary hoist wire rope to one side of the crane for standby. The auxiliary hoist wire guiding rope is passed through the pulley block of the auxiliary hook and fixed on the auxiliary hoist drum of the crane. At the end of the auxiliary hoist wire guiding rope, the auxiliary hoist wire rope is fixed by a fixing component, and then the auxiliary hoist mechanism of the crane is started to realize the winding of the auxiliary hoist wire rope, and it is completed. The present application has the effects that the threading steps are simpler and easier to implement, and the threading efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of hoisting machinery, and particularly to an efficient wire rope threading process for large-tonnage portal cranes. Background Art

[0002] In engineering machinery, it is often necessary to thread wire ropes (rope threading). For example, the cables used in portal hoisting machinery often need to be replaced, so the rope threading process is often required. As the tonnage of portal cranes increases, the wire ropes used become thicker. In related technologies, a common process for threading wire ropes for hoisting machinery mainly relies on lifting machinery for assistance and manual winding. Due to the large tonnage of portal cranes (large-tonnage portal cranes) and the thick wire ropes used, manual winding is required and needs to be repeated multiple times, making the whole process complicated and inefficient. Summary of the Invention

[0003] In order to improve the problem of low rope threading efficiency, this application provides an efficient wire rope threading process for large-tonnage portal cranes.

[0004] An efficient wire rope threading process for large-tonnage portal cranes provided by this application adopts the following technical solutions:

[0005] An efficient wire rope threading process for large-tonnage portal cranes includes the following steps:

[0006] The luffing wire rope threading step: Use a transfer device to transfer the rope drum wound with the luffing wire lead rope and the luffing wire rope to one side of the crane for standby. Pass the luffing wire lead rope through the pulley block of the crane and fix it on the luffing mechanism of the crane. Fix the luffing wire rope at the end of the luffing wire lead rope with a fixing component, and start the luffing mechanism of the crane to realize the winding of the luffing wire rope;

[0007] The main hoist wire rope threading step: After the luffing wire rope threading step is completed, use a transfer device to transfer the rope drum wound with the main hoist wire rope and the main hoist wire lead rope to one side of the crane for standby. Pass the main hoist wire lead rope through the pulley block of the main hook and fix it on the main hoist drum of the crane. Fix the end of the main hoist wire rope at the end of the main hoist wire lead rope with a fixing component, and start the main hoist mechanism of the crane to realize the winding of the main hoist wire rope;

[0008] The auxiliary hoist wire rope threading step: After the main hoist wire rope threading step is completed, use a transfer device to transfer the rope drum wound with the auxiliary hoist wire lead rope and the auxiliary hoist wire rope to one side of the crane for standby. Pass the auxiliary hoist wire lead rope through the pulley block of the auxiliary hook and fix it on the auxiliary hoist drum of the crane. Fix the auxiliary hoist wire rope at the end of the auxiliary hoist wire lead rope with a fixing component, and start the auxiliary hoist mechanism of the crane to realize the winding of the auxiliary hoist wire rope, and it is completed.

[0009] By adopting the above technical solution, the steel wire rope is driven by the main hoisting mechanism, the auxiliary hoisting mechanism and the luffing mechanism to drive the traction rope, and the steel wire rope is driven to rise or fall by the traction rope, which greatly reduces the workload of manual labor and improves the efficiency of threading the rope. The whole process only requires the cooperation of two staff members, and the threading steps are simpler and easier to implement, improving the threading efficiency.

[0010] Optionally, the steps of threading the luffing steel wire rope include the following steps:

[0011] A1: Transport the luffing steel wire rope together with the rope reel around which the steel wire rope is wound to a suitable position beside the crane by means of a transfer device, and place it on a rope-releasing bracket that can rotate the rope reel. The luffing steel wire lead rope includes a luffing steel wire lead rope with a diameter of 8 mm and a luffing steel wire lead rope with a diameter of 18 mm;

[0012] A2: Thread the luffing steel wire lead rope with a diameter of 8 mm. The head of the luffing steel wire lead rope with a diameter of 8 mm is fixed on one set of pulleys. The tail end of the luffing steel wire lead rope with a diameter of 8 mm is fixed to the head of the luffing steel wire lead rope with a diameter of 18 mm through a swivel. The luffing steel wire lead rope with a diameter of 18 mm is driven by the luffing steel wire lead rope with a diameter of 8 mm until the lead rope with a diameter of 18 mm is fixed on one of the luffing drums of the luffing steel wire rope. The tail end of the luffing steel wire lead rope with a diameter of 18 mm is connected to the head of the luffing steel wire rope through a swivel;

[0013] A3: Start the luffing mechanism of the crane, drive the luffing steel wire rope with the luffing steel wire lead rope, and wind the luffing steel wire lead rope onto the luffing drum. When the head of the luffing steel wire rope reaches the luffing drum, the luffing mechanism stops;

[0014] A4: Loosen the swivel between the luffing steel wire rope and the luffing steel wire lead rope. Fix the head of the luffing steel wire rope in the machine room, start the luffing mechanism of the crane, drive the luffing steel wire lead rope to descend, and rewind the luffing steel wire rope;

[0015] A5: The head of the luffing steel wire lead rope with a diameter of 18 mm is wound around another set of pulleys and fixed to another set of luffing drums;

[0016] A6: The tail of the luffing steel wire lead rope with a diameter of 18 mm is fixedly connected to the tail of the luffing steel wire rope through a swivel. Start the luffing mechanism of the crane, wind the luffing steel wire lead rope with a diameter of 18 mm onto another set of luffing drums. When the tail of the luffing steel wire rope reaches another set of luffing drums, the luffing mechanism stops, loosen the joint, and fix the luffing steel wire rope in the machine room through a swivel;

[0017] A7: Fix the head of the steel wire rope on the luffing drum with a pressing plate. Start the luffing mechanism of the crane, wind the luffing steel wire rope onto the luffing drum and then unwind it. Repeat three times. Remove the swivel at the head of the steel wire rope with the swivel end, and fix the steel wire rope on the luffing drum with a pressing plate;

[0018] A8: Start the luffing mechanism of the crane, wind the luffing wire rope, and install the luffing wire rope broken wire protection device after winding is completed;

[0019] A9: Start the luffing mechanism of the crane, and make the boom perform two cycles from the laid-down position to the minimum amplitude, and it's done.

[0020] By adopting the above technical solution, the luffing mechanism is used to drive the winding of the luffing wire rope. After the winding is completed, the driving of the luffing mechanism can also be used to make the luffing wire rope fit better with the luffing mechanism and wind more tightly. When performing the winding and unwinding operations, only the luffing mechanism needs to be started, and the manual work only needs to perform the disassembly work, thereby reducing the work pressure of the manual labor and improving the work efficiency.

[0021] Optionally, the wire rope threading arrangement of the main hoisting wire rope includes the following steps:

[0022] B1: Transport the main hoisting wire rope together with the wire rope reel around which the wire rope is wound to a suitable position beside the crane by the transfer device;

[0023] B2: Place the main hook under the crane so that the pulley of the main hook faces upward; lay down the boom and place it on the boom support;

[0024] B3: First thread the main hoisting wire rope lead wire with a diameter of 8 mm. Thread the lead wire starting from one set of pulleys of the main hook. When the main hoisting wire rope lead wire with a diameter of 8 mm is completely released, connect the tail of the main hoisting wire rope lead wire with a diameter of 8 mm to the head of the main hoisting wire rope lead wire with a diameter of 18 mm. Use the lead wire with a diameter of 8 mm to drive the lead wire with a diameter of 18 mm, and fix the lead wire with a diameter of φ18 on one side of the main hoisting drum of the crane;

[0025] B4: Fix the tail of the main hoisting wire rope lead wire with a diameter of 18 mm to the head of the main hoisting wire rope through a swivel;

[0026] B5: Start the main hoisting mechanism of the crane, use the main hoisting wire rope lead wire to drive the main hoisting wire rope, and wind the lead wire onto the main hoisting drum. When the joint of the main hoisting wire rope reaches the main hoisting drum, the main hoisting mechanism stops. Fix the head of the main hoisting wire rope in the machine room through a swivel and then release the lead wire to the ground for winding;

[0027] B6: Thread the main hoisting wire rope lead wire with a diameter of 18 mm starting from the other set of pulleys of the main hook, fix the head of the main hoisting wire rope lead wire in the machine room, and fix the tail of the main hoisting wire rope lead wire on the ground;

[0028] B7: Start the luffing mechanism of the crane to the minimum amplitude, release the main hoisting wire rope on the wire rope reel; finally, manually release the remaining main hoisting wire rope on the wire rope reel to expose the rope head;

[0029] B8: The head of the main hoist wire rope lead with a diameter of 18 mm in step B5 is fixed on the other side of the main hoist drum; the tail is fixed to the tail of the main hoist wire rope through a swivel.

[0030] B9: Start the main hoist mechanism of the crane. Use the main hoist wire rope lead in step B8 to drive the main hoist wire rope, and wind the main hoist wire rope lead onto the main hoist drum. When the tail of the main hoist wire rope reaches the main hoist drum, stop the vehicle. Fix the main hoist wire rope in the machine room through a swivel, fix the wire rope head plate on the hoist drum, start the main hoist mechanism of the crane, wind all the main hoist wire rope onto the main hoist drum, and then pay out the wire rope. Repeat this three times. Remove the swivel on the main hoist wire rope, and then fix the wire rope on the main hoist drum with a pressing plate.

[0031] B10: Start the main hoist mechanism of the crane, wind the main hoist wire rope, and lift the main hook. Completed.

[0032] By adopting the above technical solution, when threading the main hook, it is necessary to straighten the main hook, and only another worker is required to assist in passing through the pulley on the ground. The lifting and lowering of the main hoist wire rope is driven by the main hoist mechanism, reducing the labor intensity and improving the work efficiency at the same time.

[0033] Optionally, the threading steps of the auxiliary hoist wire rope include the following steps:

[0034] C1: Transport the auxiliary hoist wire rope together with the rope reel around which the auxiliary hoist wire rope and the auxiliary hoist wire rope lead are wound to one side of the crane through a transfer device.

[0035] C2: Place the auxiliary hook under the crane to ensure it is stable and firm, make the pulley vertically face the crane, and lower the boom and place it on the boom support.

[0036] C3: Thread the auxiliary hoist wire rope lead. Start threading the auxiliary hoist wire rope lead from one set of pulleys of the auxiliary hook. When the threading of the auxiliary hoist wire rope lead is completed, fix one end of the lead on the auxiliary hoist drum.

[0037] C4: Connect the other end of the auxiliary hoist wire rope lead to one end of the auxiliary hoist wire rope using a swivel.

[0038] C5: Start the auxiliary hoist mechanism of the crane. Use the auxiliary hoist wire rope lead to drive the auxiliary hoist wire rope, and wind the auxiliary hoist wire rope lead onto the auxiliary hoist drum. When one end of the auxiliary hoist wire rope reaches the drum, stop the auxiliary hoist mechanism. Remove the auxiliary hoist wire rope from the auxiliary hoist wire rope lead, and fix it in the machine room through a swivel. Then place the auxiliary hoist wire rope lead on the ground and wind it up while paying it out.

[0039] C6: Start the luffing mechanism of the crane to the maximum amplitude, remove the swivel of the auxiliary hoist wire rope lead rope, and fix the wire rope on the auxiliary hoist drum through the pressure plate;

[0040] C7: Then, starting from another set of pulleys of the auxiliary hook, thread the auxiliary hoist wire rope lead rope. One end of the auxiliary hoist wire rope lead rope is fixed on the boom, and the other end of the auxiliary hoist wire rope lead rope is fixedly connected to one end of the auxiliary hoist wire rope through a swivel;

[0041] C8: Lift the auxiliary hoist wire rope to one side of the boom through the auxiliary hoist wire rope lead rope. The auxiliary hoist wire rope is fixed on the boom through a swivel, and then place the auxiliary hoist wire rope lead rope on the ground for winding;

[0042] C9: Start the auxiliary hoist mechanism of the crane. After winding all the auxiliary hoist wire rope onto the auxiliary hoist drum, unwind and repeat three times. Then wind the wire rope onto the drum again, remove the swivel fixed on the boom, and then fix the auxiliary hoist wire rope on the boom;

[0043] C10: Start the auxiliary hoist mechanism of the crane, wind the auxiliary hoist wire rope, and lift the auxiliary hook. Completed.

[0044] By adopting the above technical solution, when threading the auxiliary hook, it is necessary to straighten the auxiliary hook, and only another worker is needed to assist in threading through the pulley on the ground. The action of driving the auxiliary hoist wire rope to lift and lower is realized by the auxiliary hoist mechanism, reducing the manual work intensity and improving the work efficiency at the same time.

[0045] Optionally, the transfer device includes a transfer vehicle, on which a spare cable reel is rotatably connected. A groove for winding the wire rope is provided on the outer wall of the spare cable reel, and a wire bundling mechanism is arranged on the side wall of the groove, and the wire rope is clamped on the wire bundling mechanism.

[0046] By adopting the above technical solution, since the amount of wire rope used in the wire threading step is large and the specifications are inconsistent, a transfer device is needed to transport different specifications of wire ropes to the construction site more quickly, and the wire bundling mechanism can be adjusted according to the wire diameter, with a wide application range.

[0047] Optionally, the wire bundling mechanism includes a clamping component and a wire bundling component. The wire bundling component is arranged on the side wall of the groove, the clamping component is fixed at the bottom of the groove, the end of the wire rope is fixed to the bottom of the groove through the clamping component, and the wire rope is wound along the groove and placed between the wire bundling components.

[0048] By adopting the above technical solution, the wire bundling component is used for wire bundling. When the size of the wire rope changes, the wire bundling component can adjust itself to adapt to wire ropes of different sizes, making it more convenient to use.

[0049] Optionally, the wiring harness assembly includes a limiting portion and a driving portion, the driving portion is fixed at the bottom of the groove, the steel wire rope passes through the limiting portion, and the driving portion is connected to the limiting portion, driving the limiting portion to press against the steel wire rope.

[0050] By adopting the above technical solution, the steel wire rope abuts against the limiting part after passing through the limiting part, and the limiting part is driven to move by the pressure of the steel wire rope, so as to drive the limiting part to move and clamp the steel wire rope, thereby being able to adapt to different steel wire rope sizes. The clamping effect prevents the steel wire rope from being scattered during the transportation process.

[0051] Optionally, the driving part includes a rack, a gear and a bidirectional lead screw, a mounting hole is provided at the bottom of the groove, the rack is fixed in the mounting hole and extends upward perpendicular to the bottom of the groove;

[0052] The limiting part includes a bottom plate and a pair of side plates. A cavity is provided inside the bottom plate. The bidirectional lead screw is rotatably connected to the side wall of the cavity. The gear sleeve is fixed on the bidirectional lead screw. A clearance hole is provided on the side wall of the cavity. The outer edge of the gear extends out of the clearance hole and engages with the rack.

[0053] A limiting groove is provided on the surface of the bottom plate, a pair of side plates are inserted into the limiting groove and sleeved on the bidirectional lead screw to engage with the bidirectional lead screw, and the rotation of the bidirectional lead screw drives the pair of side plates to move closer to or away from each other.

[0054] By adopting the above technical solution, the steel wire rope is in full contact with the bottom plate during the winding process, and the bottom plate is pressed down to drive the side plates to approach each other and finally abut against the steel wire rope to adapt to steel wire ropes of different sizes.

[0055] Optionally, the clamping assembly includes a mounting seat and a pressing plate fixed on the residual cable drum, a pair of mounting holes are opened on the mounting seat, the pressing plate is inserted into the pressing hole and moves in the pressing hole, an elastic part is provided in the mounting hole, the elastic part is placed between the mounting plate and the mounting hole, the wire rope passes between the mounting plate and the mounting seat, and is pressed against the mounting seat by the mounting plate.

[0056] By adopting the above technical solution, the end of the wire rope can be fixed between the mounting seat and the mounting plate, and the mounting plate is abutted against the mounting seat to achieve fixation. At the same time, the mounting plate can be easily removed from the mounting seat, making it more convenient to use.

[0057] Optionally, the elastic portion includes a base and a pair of springs, and the base is fixed on a side of the mounting plate facing the mounting seat;

[0058] The spring is fixed on the base and is perpendicular to the base. A pair of clamping holes are provided on the side wall of the mounting hole. A limiting block is provided on the outer side wall of the spring. When the spring is inserted into the mounting hole, the limiting block is embedded in the clamping hole.

[0059] By adopting the above technical solution, when it is necessary to take out the end of the wire rope, by pressing the limit block, the reed can be taken out from the mounting hole, so as to take out the end of the wire rope, which is convenient for taking.

[0060] In summary, the present application includes at least one of the following beneficial effects:

[0061] 1. The wire rope is driven by the main hoisting mechanism, the auxiliary hoisting mechanism and the luffing mechanism to drive the towing rope, and the towing rope drives the wire rope to rise or fall, which greatly reduces the workload of manual labor and improves the efficiency of threading the rope. The whole process only requires the cooperation of two staff members, and the threading steps are simpler and easier to implement, improving the threading efficiency;

[0062] 2. Since a large amount of wire ropes with inconsistent specifications are used in the threading step, a transfer device is needed to transport wire ropes of different specifications to the construction site more quickly, and the wire bundling mechanism can be adjusted according to the wire diameter, with a wide range of applications. Description of the Drawings

[0063] Figure 1 It is a schematic diagram of the winding mode of the luffing wire rope in the embodiment of the present application;

[0064] Figure 2 It is a schematic diagram of the winding mode of the main hoisting wire rope in the embodiment of the present application;

[0065] Figure 3 It is a schematic diagram of the winding mode of the auxiliary hoisting wire rope in the embodiment of the present application;

[0066] Figure 4 It is a schematic diagram of the structure of the transfer device in the embodiment of the present application;

[0067] Figure 5 It is a schematic diagram of the structure of the spare cable reel in the embodiment of the present application;

[0068] Figure 6 It is a schematic cross-sectional view of the structure of the spare cable reel in the embodiment of the present application;

[0069] Figure 7 It is Figure 6 The enlarged schematic diagram of the structure at A in

[0070] Figure 8 It is Figure 6 The enlarged schematic diagram of the structure at B in

[0071] In the figure: 1. Luffing wire rope; 2. Luffing drum; 3. Main hoisting wire rope; 4. Main hoisting drum; 5. Main hook; 6. Auxiliary hoisting wire rope; 7. Auxiliary hoisting drum; 8. Auxiliary hook; 9. Transfer device; 91. Transfer vehicle; 92. Cable reel; 921. Groove; 9211. Guide groove; 93. Wire bundling mechanism; 931. Clamping assembly; 9311. Pressing plate; 9312. Mounting plate; 9313. Reed; 932. Wire bundling component; 9321. Limiting part; 93211. Bottom plate; 93212. Side plate; 93213. Limiting groove; 9322. Driving part; 93221. Rack; 93222. Gear; 93223. Bi-directional lead screw; 93224. Spring. Detailed implementation mode

[0072] The following is a further detailed description of this application in conjunction with the attached Figures 1-8 drawings.

[0073] The embodiment of this application discloses an efficient wire rope threading process for a large-tonnage portal crane, which adopts the following steps:

[0074] Refer to Figure 1 , first is the luffing wire rope 1 threading step. Use the transfer device 9 to transfer the rope reel wound with the luffing wire leading rope and the luffing wire rope 1 to one side of the crane for standby. Pass the luffing wire leading rope through the pulley block of the crane and fix it on the luffing mechanism of the crane. Fix the luffing wire rope 1 at the end of the luffing wire leading rope by a fixing component, and start the luffing mechanism of the crane to realize the winding of the luffing wire rope 1.

[0075] More specifically, it can be executed according to the following steps: A1: Transport the luffing wire rope 1 together with the rope reel wound with the wire rope to a suitable position beside the crane and place it on a wire releasing bracket that can rotate the rope reel. The luffing wire leading rope includes a luffing wire leading rope with a diameter of 8 mm and a luffing wire leading rope with a diameter of 18 mm;

[0076] A2: Thread the luffing wire leading rope with a diameter of 8 mm. The head of the luffing wire leading rope with a diameter of 8 mm is fixed on one set of pulleys (pulley A). The tail end of the luffing wire leading rope with a diameter of 8 mm is fixed to the head of the luffing wire leading rope with a diameter of 18 mm through a swivel. Drive the luffing wire leading rope with a diameter of 18 mm by the luffing wire leading rope with a diameter of 8 mm until the leading rope with a diameter of 18 mm is fixed on one of the luffing drums 2 of the luffing wire rope 1. The tail end of the luffing wire leading rope with a diameter of 18 mm is connected to the head of the luffing wire rope 1 through a swivel;

[0077] A3: Start the luffing mechanism of the crane, drive the luffing wire rope 1 with the luffing wire leading rope, and wind the luffing wire leading rope onto the luffing drum 2. When the head of the luffing wire rope 1 reaches the luffing drum 2, the luffing mechanism stops;

[0078] A4: Loosen the swivel between the luffing wire rope 1 and the luffing wire rope lead-in rope. The head of the luffing wire rope 1 is fixed in the machine room. Start the luffing mechanism of the crane to drive the luffing wire rope lead-in rope to descend, and rewind the luffing wire rope 1.

[0079] A5: The head of the luffing wire rope lead-in rope with a diameter of 18 mm is wound around another set of pulleys and fixed to another set of luffing drums 2.

[0080] A6: The tail of the luffing wire rope lead-in rope with a diameter of 18 mm is fixedly connected to the tail of the luffing wire rope 1 through a swivel. Start the luffing mechanism of the crane to wind the luffing wire rope lead-in rope with a diameter of 18 mm onto another set of luffing drums 2. When the tail of the luffing wire rope 1 reaches another set of luffing drums 2, the luffing mechanism stops. Loosen the joint and fix the luffing wire rope 1 in the machine room through a swivel.

[0081] A7: Fix the head of the wire rope on the luffing drum 2 with a pressing plate. Start the luffing mechanism of the crane to wind the luffing wire rope 1 onto the luffing drum 2 and then unwind it. Repeat three times. Remove the swivel at the head of the wire rope at the end with the swivel, and fix the wire rope on the luffing drum 2 with a pressing plate.

[0082] A8: Start the luffing mechanism of the crane to wind the luffing wire rope 1. After winding is completed, install the broken wire protection device for the luffing wire rope 1.

[0083] A9: Start the luffing mechanism of the crane to make the boom go through two cycles from the laid-down position to the minimum amplitude, and it's done.

[0084] Refer to Figure 2 , for the rope threading steps of the main hoist wire rope 3. After the rope threading steps of the luffing wire rope 1 are completed, use the transfer device 9 to transfer the rope reel wound with the main hoist wire rope 3 and the main hoist wire rope lead-in rope to one side of the crane for standby. Pass the main hoist wire rope lead-in rope through the pulley block of the main hook 5 and fix it on the main hoist drum 4 of the crane. At the end of the main hoist wire rope lead-in rope, fix the end of the main hoist wire rope 3 with a fixing component. Start the main hoist mechanism of the crane to realize the winding of the main hoist wire rope 3.

[0085] Specifically, the rope threading arrangement of the main hoist wire rope 3 includes the following steps:

[0086] B1: Transport the main hoist wire rope 3 together with the rope reel wound with the wire rope to a suitable position beside the crane by the transfer device 9;

[0087] B2: Place the main hook 5 under the crane so that the pulley of the main hook 5 faces upward; Lay down the boom and place it on the boom support.

[0088] B3: First, thread the main hoist wire rope guide rope with a diameter of 8 mm. Start threading the guide rope from one set of pulleys of the main hook 5. When the main hoist wire rope guide rope with a diameter of 8 mm is completely unwound, connect the tail of the main hoist wire rope guide rope with a diameter of 8 mm to the head of the main hoist wire rope with a diameter of 18 mm. Use the guide rope with a diameter of 8 mm to drive the guide rope with a diameter of 18 mm, and fix the guide rope with a diameter of φ18 on one side of the main hoist drum 4 of the crane;

[0089] B4: The tail of the main hoist wire rope guide rope with a diameter of 18 mm is fixedly connected to the head of the main hoist wire rope 3 through a swivel;

[0090] B5: Start the main hoist mechanism of the crane, use the main hoist wire rope guide rope to drive the main hoist wire rope 3, and wind the guide rope onto the main hoist drum 4. When the joint of the main hoist wire rope 3 reaches the main hoist drum 4, stop the main hoist mechanism. Fix the head of the main hoist wire rope 3 in the machine room through a swivel, and then place the guide rope on the ground for winding;

[0091] B6: Thread the main hoist wire rope guide rope with a diameter of 18 mm starting from the other set of pulleys of the main hook 5. Fix the head of the main hoist wire rope guide rope in the machine room, and fix the tail of the main hoist wire rope guide rope on the ground;

[0092] B7: Start the luffing mechanism of the crane to the minimum amplitude, and release the main hoist wire rope 3 on the rope reel; finally, manually release the remaining main hoist wire rope 3 on the rope reel to expose the rope end;

[0093] B8: Fix the head of the main hoist wire rope guide rope with a diameter of 18 mm in step B5 on the other side of the main hoist drum 4; fix the tail to the tail of the main hoist wire rope 3 through a swivel;

[0094] B9: Start the main hoist mechanism of the crane, use the main hoist wire rope guide rope in step B8 to drive the main hoist wire rope 3, and wind the main hoist wire rope guide rope onto the main hoist drum 4. When the tail of the main hoist wire rope 3 reaches the main hoist drum 4, stop. Fix the main hoist wire rope 3 in the machine room through a swivel, fix the wire rope head plate on the hoist drum, start the main hoist mechanism of the crane, wind all the main hoist wire rope 3 onto the main hoist drum 4, and then unwind. Repeat three times, remove the swivel on the main hoist wire rope 3, and then fix the wire rope on the main hoist drum 4 with a pressing plate;

[0095] B10: Start the main hoist mechanism of the crane, wind the main hoist wire rope 3, and lift the main hook 5. Completed.

[0096] Refer to Figure 3, After the rope threading steps of the auxiliary hoisting wire rope 6 and the main hoisting wire rope 3 are completed, use the transfer device 9 to transfer the rope reel wound with the auxiliary hoisting wire leading rope and the auxiliary hoisting wire rope 6 to one side of the crane for standby. Pass the auxiliary hoisting wire leading rope through the pulley block of the auxiliary hook 8 and fix it on the auxiliary hoisting drum 7 of the crane. Fix the auxiliary hoisting wire rope 6 at the end of the auxiliary hoisting wire leading rope by the fixing component. Start the auxiliary hoisting mechanism of the crane to realize the winding of the auxiliary hoisting wire rope 6.

[0097] Specifically, the rope threading steps of the auxiliary hoisting wire rope 6 include the following steps:

[0098] C1: Transport the auxiliary hoisting wire rope 6 together with the rope reel wound with the auxiliary hoisting wire rope 6 and the auxiliary hoisting wire leading rope to one side of the crane through the transfer device 9;

[0099] C2: Place the auxiliary hook 8 under the crane to ensure it is stable and firm, make the pulley face the crane vertically, and lower the boom and place it on the boom support;

[0100] C3: Thread the auxiliary hoisting wire leading rope. Start threading the auxiliary hoisting wire leading rope from one set of pulleys of the auxiliary hook 8. When the threading of the auxiliary hoisting wire leading rope is finished, fix one end of the leading rope on the auxiliary hoisting drum 7;

[0101] C4: Connect the other end of the auxiliary hoisting wire leading rope and one end of the auxiliary hoisting wire rope 6 well with a swivel;

[0102] C5: Start the auxiliary hoisting mechanism of the crane. Use the auxiliary hoisting wire leading rope to drive the auxiliary hoisting wire rope 6 and wind the auxiliary hoisting wire leading rope onto the auxiliary hoisting drum 7. When one end of the auxiliary hoisting wire rope 6 reaches the drum, stop the auxiliary hoisting mechanism. Remove the auxiliary hoisting wire rope 6 from the auxiliary hoisting wire leading rope and fix it in the machine room through a swivel. Then place the auxiliary hoisting wire leading rope on the ground and wind it up while placing it;

[0103] C6: Start the luffing mechanism of the crane to the maximum amplitude. Remove the swivel of the auxiliary hoisting wire leading rope and fix the wire rope on the auxiliary hoisting drum 7 through a clamp;

[0104] C7: Thread the auxiliary hoisting wire leading rope again starting from the other set of pulleys of the auxiliary hook 8. Fix one end of the auxiliary hoisting wire leading rope on the boom. Fix the other end of the auxiliary hoisting wire leading rope and one end of the auxiliary hoisting wire rope 6 fixedly connected through a swivel;

[0105] C8: Lift the auxiliary hoisting wire rope 6 to one side of the boom through the auxiliary hoisting wire leading rope. Fix the auxiliary hoisting wire rope 6 on the boom through a swivel. Then place the auxiliary hoisting wire leading rope on the ground and wind it up;

[0106] C9: Start the auxiliary hoisting mechanism of the crane. After winding all the auxiliary hoisting wire ropes 6 onto the auxiliary hoisting drum 7, unwind them and repeat three times. Then wind the wire ropes onto the drum again, remove the swivel fixed on the boom, and then fix the auxiliary hoisting wire rope 6 on the boom.

[0107] C10: Start the auxiliary hoisting mechanism of the crane, wind the auxiliary hoisting wire rope 6, and hoist the auxiliary hook 8. That's all.

[0108] The wire ropes are driven by the main hoisting mechanism, the auxiliary hoisting mechanism and the luffing mechanism to drive the towing ropes, and the towing ropes drive the wire ropes to rise or fall, greatly reducing the manual workload and improving the efficiency of threading the ropes. The whole process only requires the cooperation of two staff members, and the rope threading steps are simpler and easier to implement, improving the rope threading efficiency.

[0109] Refer to Figure 4 and Figure 5 In the rope threading steps of the luffing wire rope 1, the main hoisting wire rope 3 and the auxiliary hoisting wire rope 6, the transfer device 9 used, due to the large amount and inconsistent specifications of the wire ropes in the rope threading steps, a transfer device 9 is needed to transport different specifications of wire ropes to the construction site more quickly, and the wire bundling mechanism 93 can be adjusted according to the wire diameter, with a wide application range.

[0110] Refer to Figure 4 and Figure 5 As shown in, the transfer device 9 includes a transfer vehicle 91. A spare cable reel 92 is rotatably connected to the transfer vehicle 91. A groove 921 for winding the wire rope is formed on the outer wall of the spare cable reel 92. A wire bundling mechanism 93 is arranged on the side wall of the groove 921, and the wire rope is clamped on the wire bundling mechanism 93. Figure 6 As shown in, the wire bundling mechanism 93 includes a clamping assembly 931 and a wire bundling assembly 932. The wire bundling assembly 932 is arranged on the side wall of the groove 921, and the clamping assembly 931 is fixed at the bottom of the groove 921. The end of the wire rope is fixed to the bottom of the groove 921 through the clamping assembly 931, and the wire rope is wound along the groove 921 and placed between the wire bundling assemblies 932. The wire rope is fixed on the wire bundling assembly 932, and when the size of the wire rope changes, the wire bundling assembly 932 can adjust itself to adapt to wire ropes of different sizes, making it more convenient to use.

[0111] Refer to Figure 6 and Figure 7, the cable harness assembly 932 includes a limiting portion 9321 and a driving portion 9322. The driving portion 9322 is fixed to the bottom of the groove 921. The steel wire rope passes through the limiting portion 9321, and the driving portion 9322 is connected to the limiting portion 9321 to drive the limiting portion 9321 to press against the steel wire rope. After the steel wire rope passes through the limiting portion 9321, it abuts against the limiting portion 9321. By the pressure of the steel wire rope, the limiting portion 9321 is pressed down to drive the limiting portion 9321 to act, so as to drive the limiting portion 9321 to move and clamp the steel wire rope, thereby being able to adapt to different steel wire rope sizes. With the clamping effect, the steel wire rope will not be scattered during transportation. And if the size of the steel wire rope changes, since the steel wire rope tightly presses on the spare cable reel 92, at this time the steel wire rope will apply pressure to the limiting portion 9321, so that through the meshing of the limiting portion 9321 and the driving portion 9322, the driving portion 9322 is driven to act, and finally acts on the line limiting portion 9321, so that the limiting portion 9321 can tightly clamp on both sides of the steel wire rope, and can adjust itself to adapt to different sizes of steel wire ropes, making it more convenient to use.

[0112] Refer to Figure 6 and Figure 7 , the driving portion 9322 includes a rack 93221, a gear 93222 and a bidirectional lead screw 93223. An installation hole is opened at the bottom of the groove 921. The rack 93221 is fixed in the installation hole and extends vertically upward from the bottom of the groove 921. The limiting portion 9321 includes a bottom plate 93211 and a pair of side plates 93212. A cavity is opened inside the bottom plate 93211. The bidirectional lead screw 93223 is rotatably connected to the side wall of the cavity. The gear 93222 is sleeved and fixed on the bidirectional lead screw 93223. A relief hole is opened on the side wall of the cavity, and the outer edge of the gear 93222 extends out through the relief hole to mesh with the rack 93221. A limiting groove 93213 is opened on the surface of the bottom plate 93211. A pair of side plates 93212 are inserted into the limiting groove 93213 and sleeved on the bidirectional lead screw 93223 to mesh with the bidirectional lead screw 93223. The rotation of the bidirectional lead screw 93223 drives the pair of side plates 93212 to approach or move away from each other. During the winding process of the steel wire rope, it is in full contact with the bottom plate 93211, pressing down the bottom plate 93211 to drive the side plates 93212 to approach each other and finally abut against the steel wire rope to adapt to different sizes of steel wire ropes. Even when winding different sizes of steel wire ropes on a single spare cable reel 92, they can be non-interfering with each other. At the same time, the same spare cable reel 92 can be used to transport different sizes of steel wire ropes simultaneously. There is no need for repeated transportation during threading, making it more convenient to use. A guiding groove 9211 is opened on the side wall of the groove 921. The end of the bottom plate 93211 extends into the guiding groove 9211. A spring 93224 is placed in the guiding groove 9211. One end of the spring 93224 is fixed to the bottom of the groove 921, and the other end of the spring 93224 is fixed to the bottom plate 93211. Using the resilience of the bottom plate 93211, when the steel wire rope no longer presses on the bottom plate 93211, it drives the bottom plate 93211 to reset.

[0113] Reference Figure 6 and Figure 8 After the wire rope is wound around the spare cable reel 92 and the winding is completed, the head of the wire rope is fixed on the side wall of the spare cable reel 92, and the fixing is realized through the clamping assembly 931. The clamping assembly 931 includes a mounting seat fixed on the spare cable reel 92 and a pressing plate 9311. A pair of mounting holes are formed in the mounting seat. The pressing plate 9311 is inserted into the pressing holes and moves in the pressing holes. An elastic part is arranged in the mounting holes. The elastic part is placed between the mounting plate 9312 and the mounting holes. The wire rope passes through between the mounting plate 9312 and the mounting seat and is pressed against the mounting seat by the mounting plate 9312. The end of the wire rope can be fixed between the mounting seat and the mounting plate 9312. By using the mounting plate 9312 to abut against the mounting seat, the fixing is realized. At the same time, the mounting plate 9312 can be conveniently disassembled from the mounting seat, making the use more convenient. The elastic part at least includes a base and a pair of spring pieces 9313. The base is fixed on the side of the mounting plate 9312 facing the mounting seat. The spring pieces 9313 are fixed on the base and are perpendicular to the base. A pair of clamping holes are formed in the side wall of the mounting hole. A limiting block is arranged on the outer side wall of the spring piece 9313. When the spring piece 9313 is inserted into the mounting hole, the limiting block is embedded in the clamping hole. When it is necessary to take out the end of the wire rope, by pressing the limiting block, the spring piece 9313 can be taken out of the mounting hole, so as to take off the end of the wire rope, which is convenient for taking.

[0114] In this application, the wire rope is driven by the main hoisting mechanism, the auxiliary hoisting mechanism and the luffing mechanism to drive the towing rope, and the towing rope drives the wire rope to rise or fall, greatly reducing the workload of manual work and improving the efficiency of threading the rope. The whole process only requires the cooperation of two staff members, and the threading steps are simpler and easier to implement, improving the threading efficiency. At the same time, since the wire rope has a large consumption and inconsistent specifications in the threading step, a transfer device 9 is needed to transport different specifications of wire ropes to the construction site more quickly, and the wire bundling mechanism 93 can be adjusted according to the wire diameter, with a wide application range.

[0115] The above are all the preferred embodiments of this application. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. An efficient wire rope threading process for large-tonnage portal cranes, characterized in that, It includes the following steps: The rope threading step of the luffing wire rope (1): Use the transfer device (9) to transfer the rope reel wound with the luffing wire rope lead and the luffing wire rope (1) to one side of the crane for standby. Pass the luffing wire rope lead through the pulley block of the crane and fix it on the luffing mechanism of the crane. Fix the luffing wire rope (1) at the end of the luffing wire rope lead by the fixing component. Start the luffing mechanism of the crane to realize the winding of the luffing wire rope (1); The rope threading step of the main hoist wire rope (3): After the rope threading step of the luffing wire rope (1) is completed, use the transfer device (9) to transfer the rope reel wound with the main hoist wire rope (3) and the main hoist wire rope lead to one side of the crane for standby. Pass the main hoist wire rope lead through the pulley block of the main hook (5) and fix it on the main hoist drum (4) of the crane. Fix the end of the main hoist wire rope (3) at the end of the main hoist wire rope lead by the fixing component. Start the main hoist mechanism of the crane to realize the winding of the main hoist wire rope (3); The rope threading step of the auxiliary hoist wire rope (6): After the rope threading step of the main hoist wire rope (3) is completed, use the transfer device (9) to transfer the rope reel wound with the auxiliary hoist wire rope lead and the auxiliary hoist wire rope (6) to one side of the crane for standby. Pass the auxiliary hoist wire rope lead through the pulley block of the auxiliary hook (8) and fix it on the auxiliary hoist drum (7) of the crane. Fix the auxiliary hoist wire rope (6) at the end of the auxiliary hoist wire rope lead by the fixing component. Start the auxiliary hoist mechanism of the crane to realize the winding of the auxiliary hoist wire rope (6), and it is completed; The rope threading process of the luffing wire rope (1) includes the following steps: A1: Use the transfer device (9) to transport the luffing wire rope (1) together with the rope reel wound with the wire rope to a suitable position beside the crane and place it on the rope releasing bracket that can rotate the rope reel. The luffing wire rope lead includes a luffing wire rope lead with a diameter of 8 mm and a luffing wire rope lead with a diameter of 18 mm; A2: Thread the luffing wire rope lead with a diameter of 8 mm. Fix the head of the luffing wire rope lead with a diameter of 8 mm on one set of pulleys. Fix the tail end of the luffing wire rope lead with a diameter of 8 mm to the head of the luffing wire rope lead with a diameter of 18 mm through a swivel. Drive the luffing wire rope lead with a diameter of 18 mm by the luffing wire rope lead with a diameter of 8 mm until the luffing wire rope lead with a diameter of 18 mm is fixed on one of the luffing drums (2) of the luffing wire rope (1). Connect the tail end of the luffing wire rope lead with a diameter of 18 mm to the head of the luffing wire rope (1) through a swivel; A3: Start the luffing mechanism of the crane and use the luffing wire rope lead to drive the luffing wire rope (1). Wind the luffing wire rope lead onto the luffing drum (2). When the head of the luffing wire rope (1) reaches the luffing drum (2), stop the luffing mechanism; A4: Loosen the swivel between the luffing wire rope (1) and the luffing wire rope lead. Fix the head of the luffing wire rope (1) in the machine room. Start the luffing mechanism of the crane to drive the luffing wire rope lead to descend and rewind the luffing wire rope (1); A5: Wind the head of the luffing wire rope lead with a diameter of 18 mm around another set of pulleys and fix the lead on another set of luffing drums (2); A6: The tail of the luffing wire rope lead with a diameter of 18 mm is fixedly connected to the tail of the luffing wire rope (1) through a swivel. Start the luffing mechanism of the crane, and wind the luffing wire rope lead with a diameter of 18 mm onto another set of luffing drums (2). When the tail of the luffing wire rope (1) reaches another set of luffing drums (2), the luffing mechanism stops. Loosen the joint and fix the luffing wire rope (1) in the machine room through the swivel. A7: Fix the head of the wire rope on the luffing drum (2) with a pressing plate. Start the luffing mechanism of the crane, wind the luffing wire rope (1) onto the luffing drum (2) and then unwind it, repeat three times. Remove the swivel at the head of the wire rope at the end with the swivel, and fix the wire rope on the luffing drum (2) with a pressing plate. A8: Start the luffing mechanism of the crane, wind the luffing wire rope (1), and install the luffing wire rope (1) breakage protection device after winding is completed. A9: Start the luffing mechanism of the crane, and make the boom go through two cycles from the laid-down position to the minimum amplitude. That's all.

2. The high-efficiency wire rope threading process for a large-tonnage portal crane according to claim 1, characterized in that, The wire threading arrangement of the main hoist wire rope (3) includes the following steps: B1: Transport the main hoist wire rope (3) together with the wire rope reel onto a suitable position beside the crane by a transfer device (9). B2: Place the main hook (5) below the crane, with the pulley of the main hook (5) facing upward; lay down the boom and place it on the boom support. B3: First thread the main hoist wire rope lead with a diameter of 8 mm. Take one set of pulleys of the main hook (5) as the starting point to thread the lead wire. When the main hoist wire rope lead with a diameter of 8 mm is completely unwound, connect the tail of the main hoist wire rope lead with a diameter of 8 mm to the head of the main hoist wire rope lead with a diameter of 18 mm. Use the 8-mm lead wire to drive the 18-mm lead wire and fix the 18-φ lead wire on one side of the main hoist drum (4) of the crane. B4: The tail of the main hoist wire rope lead with a diameter of 18 mm is fixedly connected to the head of the main hoist wire rope (3) through a swivel. B5: Start the main hoist mechanism of the crane, use the main hoist wire rope lead to drive the main hoist wire rope (3), and wind the lead wire onto the main hoist drum (4). When the joint of the main hoist wire rope (3) reaches the main hoist drum (4), the main hoist mechanism stops. Fix the head of the main hoist wire rope (3) in the machine room through a swivel and then place the lead wire on the ground for winding. B6: Take the other set of pulleys of the main hook (5) as the starting point to thread the main hoist wire rope lead with a diameter of 18 mm. Fix the head of the main hoist wire rope lead in the machine room and fix the tail of the main hoist wire rope lead on the ground. B7: Start the luffing mechanism of the crane to the minimum amplitude and release the main hoist wire rope (3) on the wire rope reel; finally, manually release the remaining main hoist wire rope (3) on the wire rope reel to expose the rope head. B8: Fix the head of the main hoist wire rope lead with a diameter of 18 mm in step B5 on the other side of the main hoist drum (4); the tail is fixedly connected to the tail of the main hoist wire rope (3) through a swivel. B9: Start the main hoisting mechanism of the crane, use the main hoisting wire guiding rope in step B8 to drive the main hoisting wire rope (3), wind the main hoisting wire guiding rope onto the main hoisting drum (4), stop when the tail of the main hoisting wire rope (3) reaches the main hoisting drum (4), fix the main hoisting wire rope (3) in the machine room through a swivel, fix the wire rope head plate on the hoisting drum, start the main hoisting mechanism of the crane, wind all the main hoisting wire rope (3) onto the main hoisting drum (4), then pay out the rope, repeat three times, remove the swivel on the main hoisting wire rope (3), and then fix the wire rope on the main hoisting drum (4) with a pressing plate; B10: Start the main hoisting mechanism of the crane, wind the main hoisting wire rope (3), and hoist the main hook (5), and it's done.

3. The high-efficiency wire rope threading process for a large-tonnage portal crane according to claim 1, characterized in that The wire threading steps of the auxiliary hoisting wire rope (6) include the following steps: C1: Transport the auxiliary hoisting wire rope (6) together with the rope reel winding the auxiliary hoisting wire rope (6) and the auxiliary hoisting wire guiding rope to one side of the crane through the transfer device (9); C2: Place the auxiliary hook (8) under the crane, ensure it is stable and firm, make the pulley vertically face the crane, and lay down the boom and place it on the boom support; C3: Thread the auxiliary hoisting wire guiding rope. Start threading the auxiliary hoisting wire guiding rope from one set of pulleys of the auxiliary hook (8). When the threading of the auxiliary hoisting wire guiding rope is finished, fix one end of the guiding rope on the auxiliary hoisting drum (7); C4: Connect the other end of the auxiliary hoisting wire guiding rope and one end of the auxiliary hoisting wire rope (6) well with a swivel; C5: Start the auxiliary hoisting mechanism of the crane, use the auxiliary hoisting wire guiding rope to drive the auxiliary hoisting wire rope (6), wind the auxiliary hoisting wire guiding rope onto the auxiliary hoisting drum (7). When one end of the auxiliary hoisting wire rope (6) reaches the drum, stop the auxiliary hoisting mechanism. Remove the auxiliary hoisting wire rope (6) from the auxiliary hoisting wire guiding rope, fix it in the machine room through a swivel, and then place the auxiliary hoisting wire guiding rope on the ground and wind it up while paying it out; C6: Start the luffing mechanism of the crane to the maximum amplitude, remove the swivel of the auxiliary hoisting wire guiding rope, and fix the wire rope on the auxiliary hoisting drum (7) with a pressing plate; C7: Then start threading the auxiliary hoisting wire guiding rope from the other set of pulleys of the auxiliary hook (8). Fix one end of the auxiliary hoisting wire guiding rope on the boom, and fix the other end of the auxiliary hoisting wire guiding rope and one end of the auxiliary hoisting wire rope (6) through a swivel connection; C8: Lift the auxiliary hoisting wire rope (6) to one side of the boom through the auxiliary hoisting wire guiding rope. Fix the auxiliary hoisting wire rope (6) on the boom through a swivel, and then place the auxiliary hoisting wire guiding rope on the ground and wind it up; C9: Start the auxiliary hoisting mechanism of the crane, wind all the auxiliary hoisting wire rope (6) onto the auxiliary hoisting drum (7), then pay out the rope and repeat three times. Wind the wire rope onto the drum again, remove the swivel fixed on the boom, and then fix the auxiliary hoisting wire rope (6) on the boom; C10: Start the auxiliary hoisting mechanism of the crane, wind the auxiliary hoisting wire rope (6), and hoist the auxiliary hook (8), and it's done.

4. The high-efficiency wire rope threading process for a large-tonnage portal crane according to claim 1, characterized in that, The transfer device (9) includes a transfer vehicle (91), on which a spare cable reel (92) is rotatably connected. A groove (921) for winding a steel wire rope is formed on the outer wall of the spare cable reel (92). A wire harnessing mechanism (93) is arranged on the side wall of the groove (921), and the steel wire rope is clamped on the wire harnessing mechanism (93).

5. The high-efficiency wire rope threading process for a large-tonnage portal crane according to claim 4, characterized in that, The wire harnessing mechanism (93) includes a clamping component (931) and a wire harnessing component (932). The wire harnessing component (932) is arranged on the side wall of the groove (921), and the clamping component (931) is fixed at the bottom of the groove (921). The end of the steel wire rope is fixed to the bottom of the groove (921) through the clamping component (931), and the steel wire rope is wound along the groove (921) and placed between the wire harnessing components (932).

6. The high-efficiency wire rope threading process for a large-tonnage portal crane according to claim 5, characterized in that, The wire harnessing component (932) includes a limiting part (9321) and a driving part (9322). The driving part (9322) is fixed at the bottom of the groove (921). The steel wire rope passes through the limiting part (9321), and the driving part (9322) is connected to the limiting part (9321) to drive the limiting part (9321) to press against the steel wire rope.

7. The high-efficiency wire rope threading process for a large-tonnage portal crane according to claim 6, characterized in that The driving part (9322) includes a rack (93221), a gear (93222) and a bidirectional lead screw (93223). An installation hole is formed at the bottom of the groove (921). The rack (93221) is fixed in the installation hole and extends upward perpendicular to the bottom of the groove (921). The limiting part (9321) includes a bottom plate (93211) and a pair of side plates (93212). A cavity is formed inside the bottom plate (93211). The bidirectional lead screw (93223) is rotatably connected to the side wall of the cavity. The gear (93222) is sleeved and fixed on the bidirectional lead screw (93223). A relief hole is formed on the side wall of the cavity, and the outer edge of the gear (93222) extends out through the relief hole to mesh with the rack (93221). A limiting groove (93213) is formed on the surface of the bottom plate (93211). The pair of side plates (93212) are inserted into the limiting groove (93213) and sleeved on the bidirectional lead screw (93223) to mesh with the bidirectional lead screw (93223). Rotation of the bidirectional lead screw (93223) drives the pair of side plates (93212) to approach or move away from each other.

8. The high-efficiency wire rope threading process for a large-tonnage portal crane according to claim 5, characterized in that The clamping component (931) includes a mounting seat fixed on the spare cable reel (92) and a pressing plate (9311). A pair of mounting holes are formed on the mounting seat. The pressing plate (9311) is inserted into the mounting holes and moves in the mounting holes. An elastic part is arranged in the mounting holes. The elastic part is arranged between the mounting plate (9312) and the mounting holes. The steel wire rope passes between the mounting plate (9312) and the mounting seat and is pressed against the mounting seat by the mounting plate (9312).

9. The high-efficiency wire rope threading process for a large-tonnage portal crane according to claim 8, characterized in that, The elastic part includes a base and a pair of spring pieces (9313). The base is fixed on the side of the mounting plate (9312) facing the mounting seat. The reed (9313) is fixed to the base and perpendicular to the base. A pair of clamping holes are formed on the side wall of the mounting hole. A limiting block is provided on the outer side wall of the reed (9313). When the reed (9313) is inserted into the mounting hole, the limiting block is embedded in the clamping hole.

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