CN210013998U - Special planetary gearbox for construction machinery rotation - Google Patents

Abstract

The utility model patent provides a special gear box for rotary transmission. The gearbox adopts the principle of power splitting, adopts the planetary transmission structure, and is driven by a hydraulic motor. The inner gear ring and the frame, the planet carrier and the pin shaft are all designed in an integrated manner, and high-performance materials are selected, which can make the structure more compact and reasonable. Greatly reduce the outer dimension of the gearbox; it not only saves the manufacturing cost, but also facilitates the maintenance and repair of the gearbox. Even if there is a problem with the gearbox, the gearbox can be replaced quickly and easily, which greatly shortens the equipment maintenance time and thus reduces the maintenance cost of the equipment.

Description

Special planetary gearbox for construction machinery rotation

technical field

The utility model patent relates to a gear box design, in particular to a special planetary gear box for rotation of construction machinery.

Background technique

The common structure of the reduction gearbox in the rotary transmission system of construction machinery is to make the machine base and the inner gear gearbox into an assembly. This transmission structure makes the outer size of the gearbox larger and the structure is complex, which not only increases the manufacturing The cost also increases the possibility of quality problems, such as oil leakage and looseness; once the gearbox fails, it will cause equipment downtime, which will also cause economic losses.

SUMMARY OF THE INVENTION

In order to improve the limitation of the above-mentioned rotary gearbox transmission structure and meet the requirements of small volume and large torque of the rotary transmission system of construction machinery, the utility model patent provides a special gearbox for rotary transmission. The gear box uses the principle of power splitting, adopts planetary transmission structure, hydraulic motor drive, the inner gear ring and the frame, the planet carrier and the pin shaft are all designed in an integrated manner, and high-performance materials are selected, which can make the structure more compact and reasonable. Greatly reduce the outer dimension of the gearbox; it not only saves the manufacturing cost, but also facilitates the maintenance and repair of the gearbox. Even if there is a problem with the gearbox, the gearbox can be replaced quickly and easily, which greatly shortens the equipment maintenance time and thus reduces the maintenance cost of the equipment.

Special planetary gearbox for construction machinery rotation, including: body, output pinion, high-speed planet carrier, low-speed planet carrier, high-speed sun gear, low-speed sun gear, high-speed planetary gear, low-speed planetary gear, bearings;

The light holes on the output flange surface of the body are screwed to the threaded interface of the rack through bolts;

The high-speed and low-speed planetary gears and the sun gear are respectively assembled on the high-speed and low-speed planetary carriers, the high-speed and low-speed planetary carrier components are assembled in the body, and the planetary gears mesh with the inner gear of the body;

The output pinion is assembled in the bearing hole of the body through the bearing, and is connected with the low-speed planet carrier through splines to output torque; the high-speed sun gear spline hole cooperates with the hydraulic motor to input power.

Further, the rotary motion of the construction machinery is driven by a hydraulic motor, and the hydraulic motor spline shaft, through the high-speed sun gear, through the two-stage series planetary transmission, decelerates and increases the torque, and then outputs the torque from the output pinion, and the output pinion is connected to the engineering machine. The rotary ring gear on the machine meshes to complete the rotary drive process.

Further, the planetary gear box adopts a segmented lubrication method, the lower bearing of the output shaft is lubricated with grease, and the upper bearing of the output shaft and the interior of the gear box are lubricated with oil immersion.

The beneficial effects of the utility model are as follows: 1. Beautiful appearance, compact structure and small external dimensions, which saves the manufacturing cost; 2. Improves the maintainability of the equipment, shortens the maintenance time of the equipment, and reduces the maintenance cost of the equipment; 3. Through the Select high-performance materials and adopt advanced technology to improve the reliability of equipment operation.

Description of drawings

Fig. 1 is a structural diagram of the present utility model.

In the figure, 1-output pinion, 2-body, 3-low-speed planet carrier, 4-low-speed planetary gear, 5-high-speed planetary carrier, 6-high-speed planetary gear, 7-needle bearing, 8-high-speed stage sun gear, 9-low speed stage sun gear, 10-needle roller bearing, 11-tapered roller bearing, 12-oil seal, 13-tapered roller bearing.

Detailed ways

The technical solutions of the present utility model are further described in detail below with reference to the accompanying drawings.

This special planetary gearbox for construction machinery mainly includes: output pinion 1, body 2, low-speed planetary carrier 3, low-speed planetary gear 4, high-speed planetary carrier 5, high-speed planetary gear 6, needle roller bearing 7, high-speed stage Sun gear 8 , low-speed sun gear 9 , needle roller bearing 10 , tapered roller bearing 11 , oil seal 12 , tapered roller bearing 13 . The lower flange surface of the body 2 is screwed on the frame through bolts; the output pinion 1 is assembled in the bearing hole of the body 2 through the bearing 11 and the bearing 13, and is connected with the low-speed planet carrier 3 through the spline. ; The high and low speed planetary gears 6 and 4 are respectively assembled on the high and low speed planetary carriers 5 and 3, the high and low speed planetary carrier components are assembled in the body, and the planetary gears are meshed with the inner gear 2 and the sun gear of the body at the same time, The sun gear is assembled in the center of the planetary gear; the spline hole of the high-speed sun gear is matched with the hydraulic motor to input power, and the hydraulic motor is installed on the upper flange surface of the body. There is an oil seal 12 between the two tapered roller bearings 11 and 13 of the output pinion 1, the bearing 13 is lubricated by grease, and the inside of the bearing 11 and the body is lubricated by oil immersion.

The special planetary gearbox for construction machinery of the utility model has the advantages of small volume, high transmission efficiency, high radial bearing capacity of the output pinion, reasonable lubrication and cooling, low use and maintenance cost, and can be widely used in construction machinery and other industries.

The above descriptions are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, but any equivalent modifications or changes made by those of ordinary skill in the art based on the contents disclosed in the present invention should be included in the within the scope of protection described in the claims.

Claims (3)

1. Special planetary gearbox for construction machinery rotation, including: body, output pinion, high-speed planetary carrier, low-speed planetary carrier, high-speed sun gear, low-speed sun gear, high-speed planetary gear, low-speed planetary gear, bearings, It is characterized by: The light holes on the output flange surface of the body are screwed to the threaded interface of the rack through bolts; The high-speed and low-speed planetary gears and the sun gear are respectively assembled on the high-speed and low-speed planetary carriers, the high-speed and low-speed planetary carrier components are assembled in the body, and the planetary gears mesh with the inner gear of the body; The output pinion is assembled in the bearing hole of the body through the bearing, and is connected with the low-speed planet carrier through splines to output torque; the high-speed sun gear spline hole cooperates with the hydraulic motor to input power. 2. The special planetary gearbox for rotation of construction machinery according to claim 1, characterized in that: the rotary motion of the construction machinery is driven by a hydraulic motor, and the hydraulic motor spline shaft passes through a high-speed sun gear and passes through a two-stage series planetary The transmission decelerates and increases the torque, and then the output pinion outputs the torque, and the output pinion meshes with the rotary gear ring on the construction machinery to complete the rotary drive process. 3. The special planetary gearbox for rotation of construction machinery according to claim 1, characterized in that: the planetary gearbox adopts a segmented lubrication method, the lower bearing of the output shaft adopts grease lubrication, and the upper bearing of the output shaft is connected to the inside of the gearbox. Oil-immersed lubrication.

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