CN201801904U - Excavator slew reducer - Google Patents

Abstract

Excavator rotary reducer, relate to the excavator, specific slewing gear who relates to the excavator that says so comprises motor, cydariform tooth shaft coupling, input shaft, reduction gearing, main shaft and support, the motor passes through the motor cabinet to be fixed on the support, the output shaft of motor passes through cydariform tooth shaft coupling and input shaft, exports by the main shaft behind reduction gearing. The speed reduction transmission device consists of a large gear, a shaft, an inner gear sleeve, a sun gear, a planet gear and a planet carrier. The big gear is arranged on the shaft and is meshed with the small gear arranged on the input shaft. The other end of the shaft is provided with a pinion which is meshed with the inner gear sleeve, the inner gear sleeve is connected with a sun wheel, the sun wheel is connected with a planet wheel, and the planet wheel is connected with an external spline of the main shaft through an internal spline of the planet carrier. The power is transmitted to the main shaft, so that the power output is realized, and the rotation function of the excavator is completed.

Description

Excavator slew reducer

technical field

The excavator slewing speed reducer described in the utility model relates to an excavator, and specifically relates to a slewing transmission device of the excavator.

Background technique

The excavator slewing reducer currently used is generally driven by two-stage cylindrical gears. The high-speed stage can be driven by cylindrical gears, but when the low-speed stage uses cylindrical gears, it will have large volume, heavy weight, and maintenance. Inconvenient, poor impact resistance of single tooth meshing and other problems. In view of the problems existing in the prior art mentioned above, it is very necessary to study and design a new type of excavator slewing reducer so as to overcome the problems existing in the prior art.

Contents of the invention

In view of the problems existing in the above-mentioned prior art, the purpose of this utility model is to study and design a new type of excavator rotary reducer, and change the two-stage cylindrical gear transmission of the original excavator rotary reducer into one-stage cylindrical gear and The combined structure of the first-class planets. That is, the high-speed stage still uses cylindrical gears to rotate, while the low-speed stage adopts planetary transmission, multi-teeth meshing, and power splitting due to its large bearing capacity, thereby solving the problem of large volume, heavy weight, inconvenient maintenance, and single-teeth meshing resistance of excavator slewing reducers. Poor impact ability and other issues. The excavator rotary reducer described in the utility model is composed of a motor, a drum-shaped gear coupling, an input shaft, a reduction transmission device, a main shaft and a support. The motor is fixed on the support through the motor seat, and the output of the motor The shaft is connected with the input shaft through a drum-shaped gear coupling, and is output by the main shaft after a reduction transmission device. The reduction transmission device is composed of a bull gear, a shaft, an inner gear sleeve, a sun gear, a planetary gear and a planet carrier. The bull gear is installed on the shaft, and the bull gear meshes with the pinion gear mounted on the input shaft. The other end of the shaft is equipped with a pinion that meshes with the inner gear sleeve, the inner gear sleeve is connected with the sun gear, the sun gear is connected with the planetary gear, and the planetary gear is connected with the outer spline of the main shaft through the inner spline of the planet carrier.

The working principle of the excavator rotary reducer described in the utility model:

The output shaft of the motor transmits the power to the input shaft through the drum gear coupling, and the input shaft and the large gear transmit the power to the shaft through the meshing of the external teeth. The inner tooth sleeve utilizes inner teeth to cooperate with the shaft and the sun gear to transmit power to the planetary gears. The planet carrier uses the internal splines to cooperate with the external splines of the main shaft to transmit power to the main shaft to realize power output and complete the rotary function.

In the excavator slewing reducer described in the utility model, the transmission of the two-stage cylindrical gear is changed to a combined structure of the first-stage cylindrical gear and the first-stage planet. That is, the high-speed stage still uses cylindrical gears to rotate, while the low-speed stage adopts planetary transmission and multi-teeth meshing for power splitting due to its large bearing capacity.

The utility model has the advantages of novel structure, reduced volume, reduced weight by about 1/3, cost saving, convenient maintenance, low-speed stage adopts planetary transmission to realize power splitting, and enhanced impact resistance. Social benefits and significant economic benefits.

Description of drawings

The utility model has a accompanying drawing altogether,

Figure 1 is a schematic diagram of the structure of the rotary reducer of the excavator

In the figure: 1. Motor seat 2. Drum gear coupling 3. Input shaft 4. Big gear 5. Shaft 6. Internal gear sleeve 7. Sun gear 8. Planetary gear 9. Planetary carrier 10. Support 11. Main shaft

Detailed ways

The specific embodiment of the utility model is shown in the accompanying drawings. The excavator rotary speed reducer is composed of a motor, a drum-shaped gear coupling 2, an input shaft 3, a reduction transmission device, a main shaft 11 and a support 10, The motor is fixed on the support 10 through the motor base 1, and the output shaft of the motor is connected with the input shaft 3 through the drum-shaped gear coupling 2, and is output by the main shaft 11 after the reduction transmission device. The reduction transmission device is composed of a bull gear 4, a shaft 5, an inner gear sleeve 6, a sun gear 7, a planetary gear 8 and a planet carrier 9. Described bull gear 4 is installed on the axle 5, and bull gear 4 and the pinion gear that is contained on the input shaft 3 are meshed. The other end of the shaft 5 is equipped with a pinion that meshes with the inner gear sleeve 6, the inner gear sleeve 6 is connected with the sun gear 7, the sun gear 7 is connected with the planetary gear 8, and the planetary gear 8 is connected to the main shaft through the internal spline of the planet carrier 9 The external splines of 11 are connected to transmit power to the main shaft 11 to realize power output and complete the slewing function of the excavator.

Claims (1)

1. A rotary reducer for an excavator is composed of a motor, a drum-shaped gear coupling (2), an input shaft (3), a reduction transmission, a main shaft (11) and a support (10). The seat (1) is fixed on the support (10), the output shaft of the motor is connected with the input shaft (3) through the drum-shaped gear coupling (2), and is output by the main shaft (11) after the deceleration transmission device; it is characterized in that Described reduction transmission device is made up of bull gear (4), axle (5), internal gear sleeve (6), sun gear (7), planetary gear (8) and planet carrier (9); Described big The gear (4) is installed on the shaft (5), and the large gear (4) meshes with the pinion on the input shaft (3); the other end of the shaft (5) is equipped with the pinion and the inner gear sleeve (6). meshing, the inner gear sleeve (6) is connected with the sun gear (7), the sun gear (7) is connected with the planetary gear (8), and the planetary gear (8) is connected with the main shaft (11) through the internal spline of the planet carrier (9) The external splines are connected.

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