CN219031577U - Mounting structure of tower crane luffing mechanism - Google Patents

Abstract

The utility model provides a mounting structure of a tower crane luffing mechanism, which comprises a roller welding bracket, a luffing roller and a luffing motor, wherein a roller end cover is mounted on the roller welding bracket, a roller support bearing is mounted in the roller end cover, a roller front shaft on the luffing roller is assembled on the roller support bearing through interference fit, a front shell is mounted at the front end of the luffing motor, a rear shell is mounted at the front side of the front shell, an output shaft support bearing is mounted in the rear shell, the rear end of an output flange is assembled in the output shaft support bearing through interference fit, the front end of the output flange is fixed with the luffing roller through bolts, an output shaft transversely penetrates through the center of the output flange, and transmission is realized between the output shaft and an input shaft of the luffing motor through a primary planetary gear and a secondary planetary gear. According to the utility model, the amplitude changing motor realizes high-precision transmission assembly through the two-stage hard tooth surface planetary gear and the amplitude changing roller, so that sliding friction can be reduced, and the running stability and the service life of the amplitude changing roller are improved.

Description

Mounting structure of tower crane luffing mechanism

Technical Field

The utility model relates to a mounting structure, in particular to a mounting structure of a tower crane luffing mechanism.

Background

With the rapid development of the construction industry, tower crane cranes for buildings in China are becoming more common, wherein an amplitude-variable traction mechanism is a device for enabling a tower crane driver to finish horizontal movement of a hung object by operating a control rod of a linkage table, and the main function is to rapidly and accurately place the hung object to a designated position. The perfection of the process is an important link for improving the working efficiency and accelerating the construction progress, and the use of the tower crane can affect the normal construction as long as the tower crane fails, and the luffing traction mechanism is used for a lot in the failure, so the luffing traction mechanism with defects needs to be improved.

The existing tower crane luffing traction mechanism is formed by assembling a winding drum and a motor on a four-point type bracket into a whole, wherein the four-point type bracket is formed by fixedly connecting two rectangular side plates with shaft holes in the center and four cross beams connected with the two rectangular side plates; the transverse motor penetrates through one side plate, the motor shaft penetrates through the shaft hole of the side plate and horizontally extends between the two side plates, the transverse motor is connected with one end of a concentrically installed speed reducer, the other end of the speed reducer is supported on the other side plate, the winding drum is located between the two side plates, and the winding drum is driven to rotate by an output shaft of the speed reducer. The defects are poor stability, difficult concentricity adjustment, installation and accurate manufacture, easy sliding friction of the assembled mechanism, and long service life if the assembled mechanism is worn slightly, good concentricity and long service life in use; if the abrasion is fast, the concentricity is poor, the motor sweeps the bore quickly, the gear of the speed reducer is toothed, and the service life is only several months.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a mounting structure of a tower crane luffing mechanism, which adopts three-stage planetary reduction to mount a gear part in a roller, and has smaller overall volume, lighter weight, smaller occupied position and smaller vibration noise compared with the traditional lifting mechanism.

In order to achieve the technical scheme, the utility model provides a mounting structure of a tower crane luffing mechanism, which comprises a roller welding support, a luffing roller and a luffing motor, wherein a roller end cover is mounted on the roller welding support, a roller supporting bearing is mounted in the roller end cover, a roller front shaft on the luffing roller is assembled on the roller supporting bearing through interference fit, a front shell is mounted at the front end of the luffing motor, a rear shell is mounted at the front side of the front shell, an output shaft supporting bearing is mounted in the rear shell, the rear end of an output flange is assembled in the output shaft supporting bearing through interference fit, the front end of the output flange is fixed with the luffing roller through an inner hexagon bolt, an output shaft transversely penetrates through the center of the output flange, a rear shell pressing plate is fixed with the output flange through the inner hexagon bolt, a secondary planet carrier is fixedly mounted at the rear end of the output shaft, the secondary planet carrier is assembled on the secondary planet carrier, a secondary sun gear is mounted on the rear side of the output shaft, a secondary sun gear is assembled on the primary planet carrier, and the primary planet carrier is meshed with the primary planet carrier, and the primary planet carrier is mounted on the primary planet carrier.

In the technical scheme, during actual operation, the variable amplitude motor drives the input shaft to rotate, the first-stage planetary gear is driven by a gear arranged on the input shaft to rotate, the first-stage planetary gear drives the first-stage planetary gear to rotate, the first-stage planetary gear drives the second-stage sun gear to rotate, the second-stage sun gear drives the second-stage planetary gear to rotate, the second-stage planetary gear drives the output shaft to rotate, the output shaft drives the output flange to finally drive the variable amplitude roller to rotate on the roller welding support through the output flange, the variable amplitude motor drives the variable amplitude roller to stably rotate, and high-precision transmission assembly is realized by the variable amplitude motor through the two-stage hard tooth surface planetary gear and the variable amplitude roller, sliding friction can be reduced, the stability of the variable amplitude roller operation is improved, and the service life is prolonged.

Preferably, the output flange framework oil seal is arranged at the butt joint of the output flange and the rear shell, and is positioned at the front side of the output shaft support bearing, and the output flange framework oil seal is arranged to ensure that the butt joint of the output flange and the rear shell is completely sealed, so that oil leakage at the butt joint is prevented.

Preferably, a secondary gear ring is arranged between the front shell and the rear shell, the secondary planetary gear is meshed with the secondary gear ring, and the stability of the secondary planetary gear in the high-speed rotation process can be further improved by arranging the secondary gear ring.

Preferably, the front shell is internally provided with the primary gear ring, the primary planetary gear is meshed with the primary gear ring, and the stability of the primary planetary gear in the high-speed rotation process can be further improved by arranging the primary gear ring.

Preferably, an input flange is arranged on the input shaft, an input flange framework oil seal is arranged at the butt joint position of the input flange and the input shaft, and the input flange is connected with the rear side of the front shell through an inner hexagon bolt so as to improve the tightness of the butt joint position of the input flange and the input shaft.

The mounting structure of the tower crane luffing mechanism has the beneficial effects that: the tower crane luffing mechanism has reasonable design, compact structure, stable operation and high bearing capacity. During actual operation, the variable amplitude motor drives the input shaft to rotate, the first-stage planetary gear is driven by a gear arranged on the input shaft to rotate, the first-stage planetary gear drives the first-stage planetary shaft to rotate, the first-stage planetary gear drives the second-stage sun gear to rotate, the second-stage sun gear drives the second-stage planetary gear to rotate, the second-stage planetary gear drives the second-stage planetary shaft to rotate, the second-stage planetary shaft drives the second-stage planetary gear to rotate, the output shaft drives the output flange to rotate, finally, the variable amplitude roller is driven by the output flange to rotate on the roller welding support, stable rotation of the variable amplitude motor is realized, and through secondary variable speed transmission among the input shaft, the first-stage planetary gear, the second-stage sun gear, the second-stage planetary gear and the second-stage planetary gear, high-precision transmission assembly is realized by the variable amplitude motor through the two-stage hard tooth face planetary gear and the variable amplitude roller, sliding friction can be reduced, the running stability of the variable amplitude roller is improved, and the service life is prolonged.

Drawings

Fig. 1 is an assembled schematic view of the internal structure of the present utility model.

FIG. 2 is an enlarged schematic illustration of a partial assembly of the present utility model.

Fig. 3 is an enlarged view of a partial assembly of the present utility model ii.

In the figure: 1. a roller welding bracket; 2. a drum end cover; 3. a drum support bearing; 4. a drum front shaft; 5. a luffing roller; 6. a rear housing platen; 7. an output flange; 8. outputting a flange framework oil seal; 9. an output shaft; 10. an output shaft support bearing; 11. a rear housing; 12. a secondary gear ring; 13. a front housing; 14. a primary planet carrier; 15. a primary planetary shaft; 16. a primary gear ring; 17. primary planetary teeth; 18. planetary tooth gaskets; 19. a luffing motor; 20. a second-stage sun gear top cover; 21. a secondary planet carrier; 22. a secondary planet shaft; 23. secondary star teeth; 24. a second-stage planetary gear spacer; 25. secondary planetary gear; 26. a primary planet carrier top cover; 27. an input shaft; 28. an input flange; 29. inputting a flange framework oil seal.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present utility model.

Examples: a mounting structure of a tower crane luffing mechanism.

Referring to fig. 1 to 3, a mounting structure of a tower crane luffing mechanism comprises a roller welding bracket 1, a luffing roller 5 and a luffing motor 19, wherein a roller end cover 2 is mounted on the roller welding bracket 1, a roller support bearing 3 is mounted in the roller end cover 2, and a roller front shaft 4 on the luffing roller 5 is assembled on the roller support bearing 3 through interference fit so as to ensure that the luffing roller 5 can rotate on the roller welding bracket 1 at a high speed;

the front end of the amplitude changing motor 19 is provided with a front shell 13, the front side of the front shell 13 is provided with a rear shell 11, the rear shell 11 is internally provided with an output shaft support bearing 10, the rear end of the output flange 7 is assembled in the output shaft support bearing 10 through interference fit, the front end of the output flange 7 is fixed with the amplitude changing roller 5 through an inner hexagon bolt, during actual operation, the rotation of the output flange 7 can drive the amplitude changing roller 5 to rotate together, the output shaft 9 transversely penetrates through the center of the output flange 7, the front end of the output shaft 9 is fixed with a rear shell pressing plate 6 through an inner hexagon bolt, the rear shell pressing plate 6 is fixed with the output flange 7 through an inner hexagon bolt, during actual operation, the rotation of the output shaft 9 can drive the output flange 7 to rotate together, the amplitude changing roller 5 is driven to rotate together, the butt joint of the output flange 7 and the rear shell 11 is provided with an output flange skeleton oil seal 8, the output flange skeleton oil seal 8 is positioned at the front side of the output shaft support bearing 10, the butt joint of the output flange 7 and the rear shell 11 can be ensured to be sealed completely by setting the output flange skeleton oil seal 8, and oil leakage is prevented;

the secondary planet carrier 21 is fixedly arranged at the rear end of the output shaft 9, the secondary planet shafts 22 are assembled on the secondary planet carrier 21, the secondary planet teeth 25 are assembled on the secondary planet shafts 22, the secondary sun teeth 23 are arranged at the rear side of the output shaft 9, the secondary sun teeth 23 are meshed with the secondary planet teeth 25, the secondary gear ring 12 is arranged between the front shell 13 and the rear shell 11, the secondary planet teeth 25 are meshed with the secondary gear ring 12, and the stability of the secondary planet teeth 25 in the high-speed rotation process can be further improved by arranging the secondary gear ring 12;

the primary planet carrier 14 is assembled on the secondary sun gear 23, the primary planet shaft 15 is assembled on the primary planet carrier 14, the primary planet gear 17 is installed on the primary planet shaft 15 and meshed with a gear arranged on an input shaft 27 on the variable amplitude motor 19, the primary gear ring 16 is installed in the front shell 13, the primary planet gear 17 is meshed with the primary gear ring 16, and the stability of the primary planet gear 17 in the high-speed rotation process can be further improved by arranging the primary gear ring 16; an input flange 28 is mounted on the input shaft 27, and an input flange framework oil seal 29 is mounted at the joint of the input flange 28 and the input shaft 27 so as to improve the tightness of the joint of the input flange 28 and the input shaft 27, and the input flange 28 is connected with the rear side of the front shell 13 through an inner hexagon bolt.

The tower crane luffing mechanism has reasonable design, compact structure, stable operation and high bearing capacity. In actual operation, the variable amplitude motor 19 drives the input shaft 27 to rotate, the gear arranged on the input shaft 27 drives the primary planetary gear 17 to rotate, the primary planetary gear 17 drives the primary planetary gear 15 to rotate, the primary planetary gear 15 drives the primary planetary gear carrier 14 to rotate, the primary planetary gear carrier 14 drives the secondary sun gear 23 to rotate, the secondary sun gear 23 drives the secondary planetary gear 25 to rotate, the secondary planetary gear 25 drives the secondary planetary gear shaft 22 to rotate, the secondary planetary gear shaft 22 drives the secondary planetary gear carrier 21 to rotate, the secondary planetary gear carrier 21 drives the output shaft 9 to rotate, the output shaft 9 drives the output flange 7 to rotate, finally, the variable amplitude motor 19 drives the variable amplitude roller 5 to rotate stably through the output flange 7, and the variable speed transmission among the input shaft 27, the primary planetary gear 17, the primary planetary gear carrier 14, the secondary sun gear 23, the secondary planetary gear 25 and the secondary planetary gear carrier 21 enables the variable amplitude motor 19 to realize high-precision transmission assembly with the variable amplitude roller 5 through the two-stage hard tooth face planetary gear carrier 21, sliding friction is reduced, the running stability of the variable amplitude roller 5 is improved, and the service life is prolonged.

The foregoing is a preferred embodiment of the present utility model, but the present utility model should not be limited to the embodiment and the disclosure of the drawings, so that the equivalents and modifications can be made without departing from the spirit of the disclosure.

Claims (5)

1. The utility model provides a mounting structure of tower crane luffing mechanism, includes cylinder welding support, luffing cylinder and luffing motor, its characterized in that: the rotary drum welding device is characterized in that a rotary drum end cover is arranged on a rotary drum welding support, a rotary drum supporting bearing is arranged in the rotary drum end cover, a rotary drum front shaft on an amplitude variable rotary drum is assembled on the rotary drum supporting bearing through interference fit, a front shell is arranged at the front end of an amplitude variable motor, a rear shell is arranged at the front side of the front shell, an output shaft supporting bearing is arranged in the rear shell, the rear end of an output flange is assembled in the output shaft supporting bearing through interference fit, the front end of the output flange is fixed with the amplitude variable rotary drum through an inner hexagon bolt, an output shaft transversely penetrates through the center of the output flange, a rear shell pressing plate is fixed with the front end of the output shaft through an inner hexagon bolt, a secondary planet carrier is fixedly arranged at the rear end of the output shaft, the secondary planet shaft is assembled on the secondary planet carrier, secondary sun teeth are arranged at the rear side of the output shaft, the secondary sun teeth are meshed with the secondary planet teeth, the primary planet carrier is assembled on the primary planet carrier, and the primary sun teeth are arranged on the primary planet carrier and the motor, and the primary sun teeth are meshed with the amplitude variable planet carrier arranged on the primary input shaft.

2. The tower crane luffing mechanism mounting structure of claim 1, wherein: and an output flange framework oil seal is arranged at the joint of the output flange and the rear shell, and is positioned at the front side of the output shaft support bearing.

3. The tower crane luffing mechanism mounting structure of claim 1, wherein: and a secondary gear ring is arranged between the front shell and the rear shell, and the secondary planetary gear is meshed with the secondary gear ring.

4. The tower crane luffing mechanism mounting structure of claim 1, wherein: a primary gear ring is arranged in the front shell, and primary planetary gears are meshed with the primary gear ring.

5. The tower crane luffing mechanism mounting structure of claim 1, wherein: an input flange is arranged on the input shaft, an input flange framework oil seal is arranged at the joint of the input flange and the input shaft, and the input flange is connected with the rear side of the front shell through an inner hexagon bolt.

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