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CN-121990459-A - Yaw reducer replacement tool

CN121990459ACN 121990459 ACN121990459 ACN 121990459ACN-121990459-A

Abstract

The invention provides a yaw speed reducer replacement tool which comprises a stand column, a lifting rope, a cross beam, a retraction mechanism, a supporting mechanism and a first fixing block, wherein the cross beam is arranged at the top of the stand column, the retraction mechanism is arranged at the top of the cross beam and used for retracting and releasing the lifting rope, the supporting mechanism is arranged on the cross beam and used for supporting the lifting rope, the lifting rope vertically extends downwards after being supported by the supporting mechanism, and the first fixing block is arranged at the bottom of the lifting rope and is in a hollow state. According to the yaw speed reducer, rolling friction is formed between the bottom of the movable block and the bottom end inside the first fixed block through the movable ball, friction force between the movable block and the first fixed block is reduced, so that the yaw speed reducer is hung up when being hung on the hanging hook, and the hanging hook drives the movable block to rotate inside the first fixed block through the connecting block during rotation adjustment, so that torsion generated by following rotation of the lifting rope is prevented, the yaw speed reducer is conveniently positioned after rotation, and manual maintenance is not needed.

Inventors

  • LIU JING

Assignees

  • 南京全服新能源有限公司

Dates

Publication Date
20260508
Application Date
20260403

Claims (10)

  1. 1. The yaw speed reducer replacement tool comprises an upright post and a lifting rope and is characterized by also comprising a cross beam, wherein the cross beam is arranged at the top of the upright post; The winding and unwinding mechanism is arranged at the top of the cross beam and used for winding and releasing the lifting rope; the supporting mechanism is arranged on the cross beam and used for supporting the lifting rope, and the lifting rope vertically extends downwards after being supported by the supporting mechanism; The first fixing block is arranged at the bottom of the lifting rope, the inside of the first fixing block is in a hollow state, a hole groove is formed in the center of the bottom of the first fixing block, a cavity in the first fixing block is communicated with the external space through the hole groove, and the aperture of the hole groove is smaller than the inner diameter of the first fixing block; the movable block is slidably arranged in the first fixed block, and the section of the movable block is circular; The lifting hook is arranged at the bottom of the movable block through a connecting block, the connecting block movably penetrates through a hole groove at the bottom of the first fixed block, and the lifting hook is used for hanging a yaw reducer to be lifted; The movable ball is rotatably arranged at the bottom end inside the first fixed block, and the top of the movable ball is clung to the bottom of the movable block, so that a gap is formed between the bottom of the movable block and the bottom end inside the first fixed block.
  2. 2. The yaw retarder replacement tool of claim 1, wherein the retraction mechanism includes a first U-shaped block mounted on a cross beam; A first motor is arranged on the first U-shaped block; The inner side of the first U-shaped block is rotatably provided with a first winding roller, the output end of a first motor is fixed on the first winding roller, and the first motor drives the first winding roller to rotate; the lifting rope is fixedly wound outside the first winding roller.
  3. 3. The yaw retarder replacement tool of claim 1, wherein the support mechanism includes fixing plates symmetrically mounted on the same side of the cross beam; the fixed pulley is rotatably arranged between the fixed plates, and the lifting rope bypasses the top of the fixed pulley; The fixed plate is provided with a fixed ring, the fixed pulley is movably arranged in the fixed ring, and the fixed ring prevents the lifting rope from being separated from the fixed pulley from the edge of the fixed pulley; The lifting rope is positioned between the fixed pulleys and the positioning column, and the positioning column prevents the lifting rope from being separated from the fixed pulleys from the top of the fixed pulleys.
  4. 4. The yaw brake replacement tooling of claim 1 further comprising a closure mechanism mounted to the hook for closing the hook opening.
  5. 5. The yaw retarder replacement tool of claim 4, wherein the closure mechanism includes second fixed blocks symmetrically mounted on the hooks; a movable shaft is rotatably arranged on the second fixed block, and the other end of the movable shaft movably penetrates through the second fixed block; The movable shaft penetrates through one end of the second fixed block, penetrates into the hollow block and is tightly attached to the inner side wall of the hollow block; a stop lever is arranged outside the movable shaft, and the free end of the stop lever penetrates into the lifting hook and is tightly attached to the inner side wall of the lifting hook; The movable shaft is arranged on the inner side wall of the hollow block, and the movable shaft is arranged on the outer side wall of the hollow block.
  6. 6. The yaw retarder replacement tool of claim 1, further comprising a rotation mechanism mounted on the cross beam for rotating a yaw retarder.
  7. 7. The yaw reducer replacement tool of claim 6 wherein the rotating mechanism comprises a fixed disk arranged at the bottom of the cross beam, a through hole is formed in the center of the fixed disk, the inner edge of the through hole is arc-shaped, and the lifting rope movably passes through the through hole and extends to the lower end of the fixed disk; The bottom of the fixed disc is provided with an annular track, and a plurality of tooth blocks are arranged outside the annular track; The annular rail is provided with rail cars moving along the annular rail, and the rail cars are at least provided with two rail cars; the yaw speed reducer further comprises a fixing component which is arranged on the rail car and used for preventing the yaw speed reducer from rotating after being lifted.
  8. 8. The yaw retarder replacement tool of claim 7, wherein the securing assembly includes a second U-shaped block mounted on a railcar; a second motor is arranged on the second U-shaped block; the inner side of the second U-shaped block is rotatably provided with a second winding roller, and the output end of the second motor is fixed on the second winding roller; the bottom of the second U-shaped block is provided with a through hole; The connecting rope is wound and fixed outside the second winding roller, and the bottom of the connecting rope movably penetrates through a through hole at the bottom of the second U-shaped block; and a clamping unit for clamping the fixed connection rope is arranged at the bottom of the second U-shaped block.
  9. 9. The yaw retarder replacement tool of claim 8, wherein the clamping unit includes a third fixed block symmetrically mounted at a bottom of the second U-shaped block; a third motor is arranged on the third fixed block; The screw rod is rotatably arranged between the third fixing blocks, the output end of the third motor is fixed on the screw rod, the screw rod is a positive and negative tooth screw rod, and the third motor is used for driving the screw rod to rotate; the positioning rod is arranged between the third fixed blocks; The clamping plates are sleeved outside the screw through threads, two clamping plates are symmetrically arranged on two sides of the screw, the clamping plates are movably sleeved outside the positioning rod, and the positioning rod prevents the clamping plates from rotating along with the screw; Also comprises a limiting ring symmetrically arranged on the first fixed block, the connecting rope is wound and fixed on the limiting ring.
  10. 10. The yaw retarder replacement tool of claim 7, wherein the railcar includes a body mounted on an endless track; The bottom of the car body is rotatably provided with rollers, and the rollers are tightly attached to the inner side of the annular track; the gear is rotatably arranged at the bottom of the vehicle body, the gear is meshed with the external tooth block of the annular track, and the gear is connected with an output shaft of a stepping motor arranged on the vehicle body and is driven to rotate by the stepping motor, so that the vehicle body moves along the annular track.

Description

Yaw reducer replacement tool Technical Field The invention relates to the technical field of lifting, in particular to a yaw reducer replacement tool. Background The yaw speed reducer is a core speed reducer of a yaw system of the wind generating set, mainly adopts a multistage planetary transmission structure, can reduce the rotating speed of a yaw motor and amplify output torque, drives a cabin to stably turn to be aligned with the wind direction, has the characteristics of strong bearing, high reliability, adaptation to severe environments and the like, and ensures that a fan efficiently captures wind energy. The yaw speed reducer has large self weight, and is lifted and moved to an installation position by means of lifting equipment during replacement and installation, and then subsequent assembly operation is carried out. Because the installation needs to be fastened through a plurality of groups of bolts, the installation holes on the speed reducer and the installation holes of the corresponding installation parts need to be aligned accurately. However, the yaw speed reducer is heavy, easy to shake and deviate after lifting, and the installation holes are difficult to align at one time after being in place, so that the speed reducer needs to be manually rotated to adjust the position. In the process, the hoisting steel wire rope can twist together with the speed reducer and generate rebound reset trend, an operator needs to keep the speed reducer at the alignment position continuously and forcefully for a long time until part of bolts are initially fixed, so that the whole installation process is time-consuming and labor-consuming and inconvenient to operate, and a device is needed to solve the problems. Disclosure of Invention The invention aims to overcome the defects in the prior art, and provides a yaw reducer replacement tool. In order to solve the technical problems, the invention adopts the following technical scheme: The yaw speed reducer replacing tool comprises an upright post, a lifting rope, a crossbeam, a retracting mechanism, a supporting mechanism, a first fixed block, a movable ball and a movable ball, wherein the crossbeam is arranged at the top of the upright post, the retracting mechanism is arranged at the top of the crossbeam and used for retracting and releasing the lifting rope, the supporting mechanism is arranged on the crossbeam and used for supporting the lifting rope, the lifting rope vertically extends downwards after being supported by the supporting mechanism, the first fixed block is arranged at the bottom of the lifting rope, the inside of the first fixed block is in a hollow state, a hole groove is formed in the center of the bottom of the first fixed block, a cavity in the first fixed block is communicated with an external space through the hole groove, the hole diameter of the hole groove is smaller than the inside diameter of the first fixed block, the movable block is slidably arranged in the first fixed block, the section of the movable block is circular, the lifting hook is arranged at the bottom of the movable block through a connecting block, the connecting block movably penetrates through the hole groove at the bottom of the first fixed block, the lifting hook is used for hanging a speed reducer to be lifted, the movable ball is rotatably arranged at the bottom of the first fixed block, and the bottom of the movable ball is tightly attached to the bottom of the movable block, and the movable ball is tightly attached to the bottom of the first fixed block, so that a gap is formed between the movable block and the bottom and the movable block. The winding and unwinding mechanism comprises a first U-shaped block arranged on a cross beam, a first motor is arranged on the first U-shaped block, a first winding roller is rotatably arranged on the inner side of the first U-shaped block, the output end of the first motor is fixed on the first winding roller, the first motor drives the first winding roller to rotate, and the lifting rope is fixedly wound outside the first winding roller. Preferably, the supporting mechanism comprises fixing plates symmetrically arranged on the same side of the cross beam, fixed pulleys rotatably arranged between the fixing plates, a fixed ring arranged on the fixing plates and movably arranged in the fixed ring, a positioning column arranged between the fixed rings and used for preventing the lifting rope from being separated from the fixed pulleys from the top of the fixed pulleys, and a lifting rope arranged between the fixed rings and the positioning column. Preferably, the device further comprises a closing mechanism which is arranged on the lifting hook and is used for closing the opening of the lifting hook. The sealing mechanism comprises a second fixed block symmetrically arranged on the lifting hook, a movable shaft rotatably arranged on the second fixed block, a hollow block arranged on the second fixed block, a stop lever ar