CN205937745U - Power is rotational speed coupled mode planetary gear case and rotational speed coupling device for transmission system - Google Patents

Abstract

The utility model relates to the technical field of compound or hybrid transmission, in particular to a rotational speed coupling type planetary gearbox and a rotational speed coupling device for a power transmission system, which is characterized in that a planetary gear mechanism and an outer ring gear input meshing gear are provided. There are more than two planetary gears, sun gears, planetary carriers and outer ring gears in the planetary gear mechanism, wherein the planetary carrier is connected to the power input shaft or the power output shaft, and the outer circular surface of the outer ring gear is provided with external meshing teeth and outer ring gears. The input meshing gear meshes, the sun gear in the planetary gear mechanism is connected to the power output shaft or the power input shaft, and the input meshing gear of the outer ring gear is connected to the power input shaft or the power output shaft. Compared with the prior art, the utility model can combine two The power output by the power source is coupled through the speed, so that the power can be coupled to output the speed of the two power sources under the condition of torque proportional transmission, so as to realize the expansion of the range of speed output and provide a wider range of speed control. possible.

Description

Speed coupling type planetary gearbox and speed coupling device for power transmission system

technical field

The utility model relates to the technical field of compound or hybrid transmission, in particular to a rotational speed coupling type planetary gearbox and a rotational speed coupling device particularly suitable for a power transmission system of hybrid vehicles or ships or electromechanical equipment driven by dual power.

Background technique

Facing the double pressure of environmental problems and energy crisis, more and more people are paying attention to various loads driven by multiple energy sources. Advancing electric and hybrid drive technologies. At present, the power sources widely used in the field of industrial drives include internal combustion engines, electric motors, hydraulic motors, etc., and the working characteristics and optimal load points of each power source are different. When the driven load changes in a wide range, a single power source Sources often have to work in low-efficiency work areas in order to adapt to load changes. The advantage of multi-power source hybrid drive is that it can flexibly adjust the load distribution of multiple power sources through power splitting and coupling technology, so that each power source can work near the optimal work load point. At the same time, when the load and load speed change range is large, and a single power source cannot meet the speed driving range, a wider range of speed output can be achieved by coupling and superimposing the speeds of the two power sources. In order to achieve this goal, a structure is required Reasonable and reliable speed coupling device.

Contents of the invention

Aiming at the shortcomings and deficiencies in the prior art, the utility model proposes a method that can couple the output power of two power sources through the rotational speed, so that the power can be transmitted under the condition of torque ratio, and the rotational speed of the two power sources can be Coupling output is carried out, and then the scope of expanding the speed output is realized, and a speed coupling planetary gearbox and a speed coupling device for a power transmission system are provided for a wider range of speed control.

The utility model can be achieved through the following measures:

A rotational speed coupling type planetary gearbox for a power transmission system is characterized in that a planetary gear mechanism and an outer ring gear input meshing gear are provided, and the planetary gear mechanism is provided with a sun gear, a planetary carrier, an outer ring gear, and two The above planetary gear, wherein the planet carrier is connected to the power input shaft or the power output shaft, the outer circular surface of the outer ring gear is provided with external meshing teeth to mesh with the input meshing gear of the outer ring gear, and the sun gear in the planetary gear mechanism is connected to the power output shaft or the power output shaft. The input shaft and the outer ring gear input meshing gear are connected to the power input shaft or the power output shaft.

The planetary gear mechanism described in the utility model can be provided with three or four planetary wheels.

The power input shaft or the power output shaft of the utility model can be arranged in the following manner: the planet carrier is connected to one power input shaft, the sun gear is connected to the power output shaft, and the outer ring gear input meshing gear is connected to another power input shaft.

The utility model also proposes a speed coupling device for a ship's constant frequency power generation system, in which the two inputs of the speed coupling type planetary gearbox are respectively connected to the ship's main engine and the hydraulic motor, and the speeds of the two power sources are coupled by the gear box to drive Synchronous generator.

The utility model also proposes a speed coupling device for a drive system of a hybrid electric vehicle, wherein two power input shafts of the speed coupling planetary gearbox are respectively connected to an electric motor and an internal combustion engine, and the speed output by the power output shaft drives the vehicle wheels.

Compared with the prior art, the utility model can couple the power output by the two power sources through the rotational speed, so that the power can be coupled and output by the rotational speeds of the two power sources under the condition of torque ratio transmission, and then realize the expansion of the rotational speed The range of output and the possibility of a wider range of speed regulation control are provided. In addition, the space position of the power input shaft of the outer ring gear is separated, which makes the arrangement of the gearbox system more convenient.

Description of drawings:

Accompanying drawing 1 is the structural representation of the utility model.

Accompanying drawing 2 is the application diagram of the utility model in the ship constant frequency power generation system.

Accompanying drawing 3 is the application schematic diagram of the utility model in the hybrid electric vehicle.

Accompanying drawing 4 is the mechanical structure schematic diagram of the present utility model.

Reference signs: outer ring gear input meshing gear 1, outer ring gear 2, planetary gear 3, sun gear 4, power input shaft 1 5, power input shaft 2 6, planet carrier 7, power output shaft 8, rotational speed coupling planet Gear box 9, synchronous generator 10, ship main engine 11, electric motor 12, internal combustion engine 13, wheels 14, drive axle 15.

detailed description:

Below in conjunction with accompanying drawing, the utility model is further described.

The utility model proposes a rotational speed coupling type planetary gearbox for a power transmission system, which is characterized in that a planetary gear mechanism and an outer ring gear input meshing gear 1 are provided, and the planetary gear mechanism is provided with a sun gear 4 and a planet carrier 7 , the outer ring gear 2, and more than two planetary gears 3, wherein the planet carrier 7 is connected to the power input shaft or the power output shaft, and the outer circular surface of the outer ring gear 2 is provided with external meshing teeth to mesh with the input meshing gear 1 of the outer ring gear, The sun gear 4 in the planetary gear mechanism is connected to the power output shaft or the power input shaft, and the outer ring gear input meshing gear 1 is connected to the power input shaft or the power output shaft.

The planetary gear mechanism described in the utility model can be provided with three or four planetary wheels.

As shown in Figure 1, the power input shaft or power output shaft of the utility model can be arranged in the following way: the planet carrier is connected to one power input shaft, the sun gear is connected to the power output shaft, and the outer ring gear input meshing gear is connected to another power input shaft ;

It should be pointed out that what is shown in Fig. 1 is only an input and output configuration of the present invention, in fact, each of the three shafts can be set as a power input shaft or a power output shaft.

Fig. 2 is a specific form of application of the rotational speed coupler of the present invention in a ship's constant frequency power generation system. The two power input shafts of the speed-coupled planetary gearbox are respectively connected to the ship's main engine and the hydraulic motor, and the speeds of the two power sources are coupled by the gearbox to drive the synchronous generator. Since the speed of the synchronous generator is formed by the coupling of the speeds of the two power sources, when the speed of the ship's main engine changes, the speed of the synchronous generator can be kept constant by effectively adjusting the speed of the hydraulic motor, and the ship can move forward. Constant frequency power generation in the process.

Figure 3 is the specific form of application of speed coupling type planetary gearbox in hybrid electric vehicle drive system. The two power input shafts of the speed-coupled planetary gearbox are respectively connected to the electric motor and the internal combustion engine, and the combined speed drives the wheels of the vehicle. In this way, the engine can be stopped at low speed, and the motor can be used to drive the car to start. At high speed, the engine speed and the motor speed can be superimposed to drive the wheels to realize the high-speed driving of the vehicle. Therefore, the coupled hybrid system can partially or completely replace the function of the transmission. At the same time, through reasonable control, the operating point of the engine can always be controlled in a relatively high efficiency area, and the fuel economy of the vehicle can be improved.

Fig. 4 is the specific mechanical structure scheme of the rotational speed coupled planetary gearbox of the present invention. In Figure 4, the outer gear of the outer ring gear meshes with the top pinion as a power input shaft. The planet carrier is mounted on the gear housing through bearings, the outer ring gear is mounted on the planet carrier through bearings, and the sun gear is also supported on the planet through bearings. on the shelf. The planet carrier and the sun gear are respectively provided with transmission shafts for power input and output.

Compared with the prior art, the utility model can couple the power output by the two power sources through the rotational speed, so that the power can be coupled and output by the rotational speeds of the two power sources under the condition of torque ratio transmission, and then realize the expansion of the rotational speed The range of output and the possibility of a wider range of speed regulation control are provided. In addition, the space position of the power input shaft of the outer ring gear is separated, which makes the arrangement of the gearbox system more convenient.

Claims (5)

1. a kind of power drive system rotating speed coupled mode epicyclic gearbox is it is characterised in that be provided with planetary gears and external tooth Circle input meshing gear, is provided with sun gear, planet carrier, external toothing in described planetary gears, and plural planet Wheel, wherein planet carrier connect power input shaft or power output shaft, and the periphery setting external toothing tooth of external toothing is defeated with external toothing Enter meshing gear engagement, the sun gear in planetary gears connects power output shaft or power input shaft, external toothing input is nibbled Close gear and connect power input shaft or power output shaft.

2. a kind of power drive system according to claim 1 with rotating speed coupled mode epicyclic gearbox it is characterised in that institute State and in planetary gears, be provided with three or four planetary gears.

3. a kind of power drive system according to claim 1 with rotating speed coupled mode epicyclic gearbox it is characterised in that dynamic Power input shaft or power output shaft are arranged in the following way：Planet carrier connects a road power input shaft, and sun gear connects power Output shaft, external toothing input meshing gear connects another road power input shaft.

4. a kind of power drive system rotating speed coupled mode epicyclic gearbox adopting as described in any one in claim 1-3 Ship constant frequency generation system with rotating speed coupling device it is characterised in that wherein two of rotating speed coupled mode epicyclic gearbox inputs Connect ship sustainer and hydraulic motor respectively, the rotating speed of two power sources drives synchronous generator after gear-box coupling Machine.

5. a kind of power drive system rotating speed coupled mode epicyclic gearbox adopting as described in any one in claim 1-3 Driving system of hybrid power electric vehicle with rotating speed coupling device it is characterised in that two of rotating speed coupled mode epicyclic gearbox Power input shaft connects motor and internal combustion engine respectively, and the rotating speed of power output shaft output drives automotive wheel.