CN-121989005-A - Front end cover mounting device of main shaft assembly of wind generating set and application method of front end cover mounting device

CN121989005ACN 121989005 ACN121989005 ACN 121989005ACN-121989005-A

Abstract

The invention discloses a front end cover mounting device of a main shaft assembly of a wind generating set and a use method thereof. The two ends of the adjusting screw rod are respectively in threaded connection with the upper supporting frame and the lower supporting frame, the whole height of the device is adjusted through the screwing depth of the two ends of the adjusting screw rod, the bottom end of the lower supporting rod penetrates through any round hole of the front flange of the main shaft and is connected with the front flange of the main shaft through a base plate and a locking nut, the sliding block is slidably arranged at the top of the upper supporting frame, the universal ball is arranged at the top of the sliding block, the sliding block can move to a preset installation position, the top of the universal ball props against the front end cover, and the jacking bolts are preloaded and arranged at two sides of the sliding block and are in contact with the upper supporting frame. The invention satisfies the installation of the front end cover of various machine types, realizes the rotation of the front end cover, enables the front end cover to be aligned with the bearing seat for installation, and has simple and convenient integral installation, high efficiency and strong universality.

Inventors

LI JINLAN
XUE ZHENFENG
DUAN YU
Wang Guanfa
YANG YAN

Assignees

明阳智慧能源集团股份公司

Dates

Publication Date: 20260508
Application Date: 20260228

Claims (9)

1. The front end cover mounting device of the main shaft assembly of the wind generating set is characterized by comprising an upper support frame, a sliding block, a lower support seat, a lower support rod, an adjusting screw rod, a base plate, a locking nut, a universal ball and a jacking bolt, wherein the upper support frame, the adjusting screw rod, the lower support seat and the lower support rod are sequentially connected from top to bottom, two ends of the adjusting screw rod are respectively in threaded connection with the upper support frame and the lower support seat, the whole height of the device is adjusted through the screwing depth of two ends of the adjusting screw rod, the bottom end of the lower support rod penetrates through any round hole of a flange at the front end of the main shaft and is connected with the flange at the front end of the main shaft through the base plate and the locking nut, the sliding block is slidably mounted at the top of the upper support frame, the universal ball is mounted at the top of the sliding block, the sliding block can move to a preset mounting position, the top of the universal ball is jacked on the plane of the front end cover, and the jacking bolt is pre-tightly mounted on two sides of the sliding block and contacts with the upper support frame, and limiting is formed on the sliding block.
2. The front end cover mounting device of the main shaft assembly of the wind generating set is characterized in that the upper supporting frame comprises a sliding plate, a first reinforcing rib, a second reinforcing rib, a pipe fitting and an upper threaded connecting block, one end of the pipe fitting is connected with the sliding plate, the other end of the pipe fitting is connected with the upper threaded connecting block, first threads are arranged on the surface of the hollow inner wall of the upper threaded connecting block, and two ends of the first reinforcing rib and the second reinforcing rib are respectively connected with the sliding plate and the pipe fitting.
3. The front end cover mounting device of the wind generating set spindle assembly is characterized in that grooves matched with a sliding plate are formed in the bottom of the sliding block, sliding connection is formed between the grooves and the sliding plate, tightening bolt holes are formed in two sides of the sliding block and used for mounting tightening bolts, and universal ball mounting openings are formed in the top of the sliding block and used for being connected with universal balls.
4. The front end cover mounting device of the wind generating set spindle assembly is characterized in that a second thread matched with a first thread of an upper thread connecting block is formed on the top end surface of the adjusting screw, the top end of the adjusting screw is in threaded connection with the upper thread connecting block through the second thread and the first thread, a third thread is formed on the bottom end surface of the adjusting screw, and a flat opening is formed in the center of the adjusting screw and used for operating the adjusting screw to rotate.
5. The front end cover mounting device of the main shaft assembly of the wind generating set is characterized in that the lower support comprises a lower threaded connecting block and a mounting plate which are sequentially mounted from top to bottom, a round hole for mounting the lower threaded connecting block is formed in the middle of the mounting plate, the mounting plate is provided with a plurality of first bolt holes uniformly distributed along the circumferential direction of the round hole, the lower threaded connecting block is mounted in the round hole, a fourth thread is formed in the surface of the hollow inner wall of the lower threaded connecting block, and the bottom end of the adjusting screw is in threaded connection with the lower threaded connecting block through the fourth thread and the third thread.
6. The device for installing the front end cover of the main shaft assembly of the wind generating set, which is disclosed in claim 5, is characterized in that the lower supporting rod comprises a lower connecting plate, connecting bolts and a supporting rod, the lower connecting plate is provided with a plurality of second bolt holes which are uniformly distributed in the circumferential direction, the second bolt holes are connected with the first bolt holes through the connecting bolts, one end of the supporting rod is connected with the lower connecting plate, and the surface of the other end of the supporting rod is provided with fifth threads for installing a backing plate and a locking nut.
7. A method of using a wind turbine generator system main shaft assembly front end cap mounting device according to any one of claims 1 to 6, comprising the steps of: S1, installing a plurality of sets of front end cover installation devices of a main shaft assembly of the wind generating set on a flange at the front end of the main shaft of the wind generating set; s2, rotating the screwing depth of the adjusting screw rods of the front end cover mounting devices of all the main shaft assemblies of the wind generating set, enabling all the upper supporting frames to be lowered to the preset lowest position, enabling all the sliding blocks to slide to the preset mounting positions after the front end cover is hung and sleeved on the main shaft, enabling the tops of all the universal balls to be jacked on the plane of the front end cover, and then screwing the screwing bolts on the two sides of all the sliding blocks to limit the sliding blocks; S3, after the other spindle assemblies are installed, rotating the screwing depth of all the adjusting screws to enable all the upper supporting frames to be lifted, driving the front end cover to be lifted to a preset position, horizontally rotating the front end cover to enable the installation holes of the front end cover to be aligned with the threaded holes of the bearing seat, and enabling the front end cover to be connected with the bearing seat through screws; S4, rotating the screwing depth of all the adjusting screws, removing all gaskets and locking nuts after all the upper support frames are lowered away from the bearing seat, enabling all the front end cover mounting devices of the main shaft assemblies of the wind generating set to be separated from the front end flange of the main shaft, and completing the mounting operation of the front end cover of the wind generating set.
8. The method of using a front end cap mounting device for a main shaft assembly of a wind turbine generator system according to claim 7, wherein the step S1 includes: The front end cover mounting devices of the main shaft assemblies of the wind generating sets are circumferentially and uniformly distributed on the flange at the front end of the main shaft, and the lower support rod of each front end cover mounting device of the main shaft assemblies of the wind generating sets is connected with the round hole of the flange at the front end of the main shaft through a backing plate and a locking nut.
9. The method of using a front end cap mounting device for a main shaft assembly of a wind turbine generator system according to claim 8, wherein the step S1 includes: Three sets of installation devices for the front end cover of the main shaft assembly of the wind generating set are selected to be installed on the flange at the front end of the main shaft and are uniformly distributed on the circumference.

Description

Front end cover mounting device of main shaft assembly of wind generating set and application method of front end cover mounting device Technical Field The invention relates to the technical field of installation of a front end cover of a wind generating set, in particular to a front end cover of a main shaft assembly of a wind generating set and a using method thereof. Background The main shaft assembly of the wind driven generator is generally assembled in a vertical state, namely, the main shaft is vertically arranged, the front end cover, the bearing seat and other parts are assembled in sequence, and after the integral assembly of the main shaft assembly is completed, the main shaft assembly is turned to a horizontal state to be in butt joint with other parts of the engine room. According to the assembly sequence, the front end cover is sleeved into the main shaft, and after the bearing seat and the accessory parts are installed in place, the front end cover is lifted upwards and is attached and fastened with the end face of the bearing seat. Because the front end of the main shaft is of a composite shape of an arc transition structure and an outer flange plate, the lower part of the front end cover corresponds to the arc neck section of the main shaft, no flat supporting surface exists, and the front end cover can not be directly pushed by a jack to be installed in place. At present, a mode of matching a special mounting seat with a jack is commonly adopted in the industry to realize the jacking operation of the front end cover, but the jacking operation is limited by the problems of large structural difference of front ends of main shafts of different types, large span of height dimension from a main shaft flange to a front end cover mounting surface and the like, the special mounting seat has poor universality and low interchangeability, and each wind generating set needs to be independently designed and manufactured, so that the cost is high and the period is long. Meanwhile, the jack can only provide vertical jacking force, cannot drive the front end cover to circumferentially rotate, is difficult to quickly and accurately align the front end cover bolt hole with the bearing seat threaded hole in the installation process, leads to difficult bolt alignment and low assembly efficiency, and has the risks of repeated adjustment and collision damage of the matching surface, and seriously affects the assembly quality and the operation efficiency. Disclosure of Invention The invention aims to solve the defects in the prior art, and provides a front end cover of a main shaft assembly of a wind generating set and a use method thereof, which meet the requirements of front end cover installation of various wind generating set types, and simultaneously realize direct rotation of the front end cover, so that the installation holes of the front end cover are aligned with threaded holes on a bearing seat, and the front end cover is simple and convenient to install, high in efficiency and strong in universality. The technical scheme includes that the front end cover mounting device of the main shaft assembly of the wind generating set comprises an upper support frame, a sliding block, a lower support seat, a lower support rod, an adjusting screw rod, a base plate, a locking nut, a universal ball and a jacking bolt, wherein the upper support frame, the adjusting screw rod, the lower support seat and the lower support rod are sequentially connected from top to bottom, two ends of the adjusting screw rod are respectively in threaded connection with the upper support frame and the lower support seat, the whole height of the device is adjusted through the screwing depth of two ends of the adjusting screw rod, the bottom end of the lower support rod penetrates through any one round hole of a flange at the front end of the main shaft and is connected with the front flange of the main shaft through the base plate and the locking nut, the sliding block is slidably mounted at the top of the upper support frame, the universal ball is mounted at the top of the sliding block, the sliding block can move to a preset mounting position, the top of the universal ball is jacked on the plane of the front end cover, and the jacking bolt is pre-mounted on two sides of the sliding block and contacts with the upper support frame, and limiting is formed on the sliding block. The upper support frame comprises a sliding plate, a first reinforcing rib, a second reinforcing rib, a pipe fitting and an upper threaded connecting block, one end of the pipe fitting is connected with the sliding plate, the other end of the pipe fitting is connected with the upper threaded connecting block, first threads are arranged on the surface of the hollow inner wall of the upper threaded connecting block, and two ends of the first reinforcing rib and the second reinforcing rib are respectively connected with the sliding plate and the pipe fitting. Furthermor