CN211737387U

CN211737387U - Hydraulic generator

Info

Publication number: CN211737387U
Application number: CN202020480749.1U
Authority: CN
Inventors: 赵学清
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-04
Filing date: 2020-04-04
Publication date: 2020-10-23
Anticipated expiration: 2030-04-04

Abstract

The utility model discloses a hydraulic generator, including hydraulic motor functional unit and electricity generation functional unit, hydraulic motor functional unit is hydraulic motor, electricity generation functional unit is the generator, and hydraulic motor functional unit drive electricity generation functional unit is rotatory, electricity generation functional unit still includes rectification or pressure regulating device, hydraulic motor functional unit includes hydraulic motor and speed governing throttling arrangement, electricity generation functional unit has the output of connecting load circuit. The device can turn into the backward flow complementary energy of hydraulic oil into the electric energy and carry out recycle, and the energy that the return pressure that will original system need consume with the choke valve speed governing is taken is used for driving power generation facility electricity generation, consequently reduces the system and generates heat the power consumption, reduces the hydraulic system temperature rise, reaches energy saving and emission reduction, the effect of simplified system.

Description

Hydraulic generator

Technical Field

The utility model relates to a hydraulic pressure oil return technical field, concretely relates to utilize system return pressure to realize the device of electricity generation.

Background

The hydraulic system is a complete set of device which takes oil as a working medium, utilizes the pressure energy of the oil and controls a hydraulic actuating mechanism to work through accessories such as a control valve and the like, and generally comprises a power element, an actuating element, a control element, an auxiliary element and hydraulic oil, wherein the power element is a hydraulic pump: the device for converting the hydraulic energy into the mechanical energy comprises an execution element, such as a hydraulic cylinder and a hydraulic motor, a control element, such as a hydraulic valve: the hydraulic oil is a working medium for transferring energy in a hydraulic system, and comprises various types of mineral oil, emulsion, synthetic hydraulic oil and the like.

A hydraulic cylinder type hydraulic system, such as a hydraulic elevator, comprises two processes of oil inlet and oil return in the working process of hydraulic oil, wherein the oil inlet process isFromThe hydraulic oil is returned to the oil tank of the hydraulic system from the working oil cylinder when the oil cylinder piston returns, and the return of the oil cylinder piston is usually powered by gravity or other energy storage devices in the system, such as a pneumatic cylinder or a piston cylinder with a spring. Because some field devices have requirements on the return working condition of a working oil cylinder of a hydraulic system in terms of speed and the like, a speed regulating device such as a throttle valve is usually arranged on a hydraulic circuit for control; in the case of a system with such a hydraulic system, the energy available in the initial phase of the return stroke is largely consumed in the return stroke by the return throttle in the hydraulic system. For a hydraulic system adopting a throttle valve to control the return working condition, a large amount of heat is generated when hydraulic oil passes through the throttle opening, and the heat is accumulated continuously in the hydraulic circulation process, which is also the main reason for increasing the oil temperature. In fact, in most hydraulic systems, in order to control the temperature of hydraulic oil, the temperature of the hydraulic oil in the system is prevented from rising too much, and a cooling device is usually added in the hydraulic system, so that the hydraulic system not only has high energy consumption, but also has large heat emission.

Aiming at the situations, the research aims to fully utilize energy, recover the energy of the hydraulic system, simplify the hydraulic system and realize the energy conservation and emission reduction of the hydraulic system.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose that will realize is: energy recovery is carried out on the hydraulic system, energy loss of the system is reduced, heating of the system is reduced, and energy conservation and emission reduction of the hydraulic system are achieved.

In order to solve the technical problem, the utility model discloses a technical scheme is:

a hydraulic generator comprises a hydraulic motor functional component 1 and a power generation functional component 2, wherein the hydraulic motor functional component 1 is a hydraulic motor, the power generation functional component 2 is a generator, the hydraulic motor functional component 1 drives the power generation functional component 2 to rotate, and the power generation functional component 2 is provided with an output end connected with a load circuit 3.

As a further explanation of the above, the hydraulic motor function member 1 is a gear type, vane type hydraulic motor, and the power generation function member 2 is an alternator.

As a further explanation of the above solution, the hydraulic motor functional component 1 is in transmission connection with the power input end of the power generation functional component 2 through a coupling 4.

As a further explanation of the above solution, the coupling 4 is a spline coupling.

As a further illustration of the above solution, the load of the load circuit 3 is a power adjustable load. The rotating speed of the hydraulic motor is adjusted by adjusting the load power, so that the flow speed of the hydraulic oil is adjusted, the backflow residual energy of the hydraulic oil can be converted into electric energy, the electric energy can be recovered, the residual energy is prevented from being converted into heat energy of the hydraulic oil in a throttling mode, and the temperature rise of the hydraulic oil in a hydraulic system is effectively prevented.

As a further explanation of the above solution, the power generation functional component 2 further includes a rectifying or voltage regulating device.

As a further explanation of the above scheme, the hydraulic motor functional component 1 comprises a hydraulic motor and a speed-regulating throttling device 5, the speed-regulating throttling device 5 is a throttle valve, and the speed-regulating throttling device 5 and the hydraulic motor are installed on a loop of a hydraulic system in parallel. Through parallelly connected choke valve, can realize two backward flow speed reduction oil circuits, avoid hydraulic motor to appear unable rotation or rotational speed too slow problem because of some reasons.

As a further explanation of the above scheme, the speed-regulating throttling device 5 is an adjustable throttling valve. Through the structure, the opening of the throttle valve can be controlled, the output parameters of the generator can be adjusted according to the rotating speed and the load capacity of the motor, and all working condition requirements of the system during the return stroke of the working oil cylinder are met together.

As a further explanation of the above solution, the hydraulic motor functional component 1 is formed by connecting the hydraulic motor and the speed-regulating throttling device 5 in parallel through an integrated structure, or connecting the hydraulic motor and the speed-regulating throttling device in parallel through an independent and separate structure.

As a further explanation of the above scheme, the hydraulic motor functional component 1 and the power generation functional component 2 are designed as an integrated structure, and the hydraulic generator comprises a gear with a shaft 1-1, a speed regulation oil way 1-2, a rear cover with a throttle hole 1-3, a floating side plate 1-4, a gear 1-5, an oil pressure shell 1-6, a motor intermediate support 1-7, a generator stator assembly 1-8, a generator rotor 1-9, a collecting ring and brush carrier assembly 1-10, a charging regulator 1-11, a charging wire column 1-12, a current rectifier 1-13 and a main shaft 1-14; the hydraulic generator comprises a hydraulic motor driving and throttling speed regulation part, a generator and an electric control part; the hydraulic motor functional component 1 comprises a gear with a shaft 1-1, a speed regulating oil path 1-2, a rear cover with a throttling hole 1-3, a floating side plate 1-4, a gear 1-5 and an oil pressure shell 1-6, wherein the gear 1-1 with the shaft is in transmission connection with the gear 1-5, the gear 1-5 is coaxially and fixedly connected with the rear section of a main shaft 1-14, the radial outer side and the front side of the gear 1-1 with the shaft and the gear 1-5 are respectively provided with the oil pressure shell 1-6, the rear side of the gear 1-1 with the shaft and the gear 1-5 is provided with the floating side plate 1-4, the rear side of the floating side plate 1-4 is provided with the rear cover with the throttling hole 1-3, the speed regulating oil path 1-2 is arranged in the rear cover with the throttling hole 1-3, and the rear cover with the throttling hole 1-3 is also provided with a regulating valve core 1-2 for controlling 1, the front side shell surface and the floating side plate 1-4 of the oil pressure shell 1-6 are provided with bearing holes for mounting the gear 1-1 with a shaft, the oil pressure shell 1-6 is in sealing fit with the floating side plate 1-4, the oil pressure shell 1-6 is provided with an oil inlet 1-6-1 and an oil outlet 1-6-2 on the radial outer side shell surface, the oil pressure shell 1-6 and the floating side plate 1-4 are sealed to form a gear driving oil path 1-1-1, the gear driving oil path 1-1-1 drives a belt shaft gear 1-1 to rotate, the oil inlet 1-6-1 and the oil outlet 1-6-2 are also respectively communicated with two ends of the speed regulating oil way 1-2, so that the speed regulating oil way 1-2 and the gear driving oil way 1-1-1 are connected in parallel; the power generation functional component 2 comprises a motor middle support 1-7, a generator stator assembly 1-8, a generator rotor 1-9, a collector ring and brush carrier assembly 1-10, a charging regulator 1-11, a charging terminal 1-12, a current rectifier 1-13 and a main shaft 1-14, wherein the front section of the main shaft 1-14 is coaxially and fixedly connected with the generator rotor 1-9, the radial outer side of the generator rotor 1-9 is provided with the generator stator assembly 1-8, the generator rotor 1-9 is in clearance fit with the generator stator assembly 1-8, the front end and the rear end of the generator stator assembly 1-8 are respectively fixed on a generator front shell 1-7-1 and a motor middle support 1-7, and a generator front shell 1-7-1, a bearing hole is arranged in the center of a motor intermediate support 1-7, a main shaft 1-14 is stably installed in bearing holes of a generator front shell 1-7-1 and the motor intermediate support 1-7 through a bearing, a collecting ring of a collecting ring and brush holder assembly 1-10 is coaxially fixed at the front end of the main shaft 1-14, a brush holder assembly of the collecting ring and brush holder assembly 1-10 is fixed on the generator front shell 1-7-1, a charging regulator 1-11 and a charging wiring column 1-12 are fixed on the outer side surface of the generator front shell 1-7-1, a current rectifier 1-13 is fixed on the inner side surface of the generator front shell 1-7-1, a generator rotor 1-9 is connected with the current rectifier 1-13 through a collecting ring and brush holder assembly 1-10 through an electric wire, the current rectifier 1-13 is connected with the charging regulator 1-11 through an electric wire, the charging regulator 1-11 is connected with the charging terminal 1-12 through an electric wire, and the charging terminal 1-12 is used for charging the storage battery.

The working principle is as follows: hydraulic generator, come the rotational speed of hydraulic motor through the output load power who adjusts the generator to the return flow and the working cylinder of hydraulic oil reach the effect of adjusting the velocity of flow in return stroke speed among the control hydraulic system, can turn into the electric energy with the backward flow complementary energy of hydraulic oil simultaneously again, its electric energy is recoverable, avoid the complementary energy to turn into the heat energy of hydraulic oil with the mode of throttle, thereby effectively prevent the temperature rise of hydraulic oil among the hydraulic system.

Has the advantages that: hydraulic generator can replace the velocity of flow regulation that the choke valve realized hydraulic oil to can turn into the backward flow complementary energy of hydraulic oil electric energy and carry out recycle, can also exempt from installation cooling device simultaneously, reach energy saving and emission reduction, simplified system's effect.

The explanations in the above regarding terms and prior art components are as follows:

hydraulic cylinder hydraulic system: the hydraulic system is characterized in that an actuating element in the hydraulic system is a hydraulic oil cylinder, and the hydraulic oil cylinder does linear reciprocating motion, outputs force and displacement, such as a hydraulic lifter.

A throttle valve: the throttle valve is a valve for controlling fluid flow by changing throttle section or throttle length, and can be divided into an adjustable throttle valve and a fixed throttle valve according to structural forms.

A hydraulic motor: the hydraulic motor is divided into gear type, vane type, plunger type and other types according to the structural types.

A generator: it is a mechanical device for converting other forms of energy into electric energy, and is driven by a water turbine, a steam turbine, a diesel engine or other power machinery.

Coupling: the coupling is a device for connecting two shafts or a shaft and a rotating part, rotating together in the process of transmitting motion and power and not separating under normal conditions. Sometimes it is used as a safety device to prevent the coupled machine parts from bearing excessive load, and it plays the role of overload protection. Most of the commonly used couplings are standardized or standardized, and generally, only the type of the coupling needs to be correctly selected and the model and the size of the coupling need to be determined. Couplings can be divided into two broad categories, rigid couplings and flexible couplings.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment;

fig. 2 is a schematic structural diagram of a hydraulic motor functional part 1 in a second embodiment;

FIG. 3 is an engineering view of the third embodiment;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a sectional view taken along line B-B in fig. 4.

In the drawings:

the device comprises a hydraulic motor functional part 1, a power generation functional part 2, a load circuit 3, a coupler 4, a speed regulation throttling device 5, a gear with a shaft 1-1, a gear driving oil circuit 1-1, a speed regulation oil circuit 1-2, a rear cover with a throttling hole 1-3, a floating side plate 1-4, a gear 1-5, an oil pressure shell 1-6, an oil inlet 1-6-1, an oil outlet 1-6-2, a generator front shell 1-7-1, a motor middle support 1-7, a generator stator assembly 1-8, a generator rotor 1-9, a collecting ring and brush carrier assembly 1-10, a charging regulator 1-11, a charging wiring column 1-12, a current rectifier 1-13 and a main shaft 1-14.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; it is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The first embodiment is as follows:

a hydraulic generator is shown in a schematic structural principle diagram of fig. 1 and comprises a hydraulic motor functional component 1 and a power generation functional component 2, wherein the hydraulic motor functional component 1 is a hydraulic motor, the power generation functional component 2 is a generator, the hydraulic motor functional component 1 drives the power generation functional component 2 to rotate, the output end of the power generation functional component 2 is connected with a load circuit 3, the load circuit 3 is a circuit of an electric appliance or a storage battery or a power grid circuit, and the hydraulic motor functional component 1 is connected to a hydraulic system loop.

As a further description of the present embodiment, the hydraulic motor function part 1 is one of a gear type, vane type or plunger type hydraulic motor, and the power generation function part 2 is one of a dc generator or an ac generator.

As a further description of the present embodiment, the hydraulic motor function unit 1 is drivingly connected to the power input of the power generation function unit 2 via a coupling 4.

As a further description of the present embodiment, the coupling 4 is a spline coupling.

As a further implementation description of the present embodiment, the load of the load circuit 3 is a power adjustable load.

As a further description of the present embodiment, the power generation functional component 2 further includes a rectifying or voltage regulating device.

The hydraulic generator can adjust the rotating speed of the hydraulic motor by adjusting the load power, so that the flow speed of hydraulic oil is adjusted, the backflow surplus energy of the hydraulic oil can be converted into electric energy, the electric energy can be recovered, the surplus energy is prevented from being converted into heat energy of the hydraulic oil in a throttling mode, the temperature rise of the hydraulic oil in a hydraulic system is effectively prevented, and compared with a conventional hydraulic system, the hydraulic generator can be provided with no cooling device and has the effects of energy conservation and emission reduction.

Example two:

the difference from the first embodiment is that: as shown in fig. 2, the hydraulic motor functional component 1 includes a hydraulic motor and a speed regulation throttling device 5, the speed regulation throttling device 5 is a throttling valve, and the speed regulation throttling device 5 and the hydraulic motor are installed on a loop of a hydraulic system in parallel. Through parallelly connected choke valve, can realize two backward flow speed reduction oil circuits, avoid hydraulic motor to appear unable rotation or rotational speed too slow problem because of some reasons.

As a further explanation of the above scheme, the hydraulic motor functional component 1 is that the hydraulic motor is connected with the speed regulation throttling device 5 in parallel through an independent discrete structure.

Example three:

the difference from the second embodiment is that: as shown in fig. 3, 4 and 5, the hydraulic motor functional part 1 and the power generation functional part 2 are designed in an integrated structure, and the hydraulic generator comprises a gear 1-1 with a shaft, a speed regulation oil way 1-2, a rear cover 1-3 with a throttle hole, a floating side plate 1-4, a gear 1-5, an oil pressure shell 1-6, a motor intermediate support 1-7, a generator stator assembly 1-8, a generator rotor 1-9, a collecting ring and brush carrier assembly 1-10, a charging regulator 1-11, a charging terminal 1-12, a current rectifier 1-13 and a main shaft 1-14; the hydraulic generator comprises a hydraulic motor driving and throttling speed regulation part, a generator and an electric control part; the hydraulic motor functional component 1 comprises a gear with a shaft 1-1, a speed regulating oil path 1-2, a rear cover with a throttling hole 1-3, a floating side plate 1-4, a gear 1-5 and an oil pressure shell 1-6, wherein the gear 1-1 with the shaft is in transmission connection with the gear 1-5, the gear 1-5 is coaxially and fixedly connected with the rear section of a main shaft 1-14, the radial outer side and the front side of the gear 1-1 with the shaft and the gear 1-5 are respectively provided with the oil pressure shell 1-6, the rear side of the gear 1-1 with the shaft and the gear 1-5 is provided with the floating side plate 1-4, the rear side of the floating side plate 1-4 is provided with the rear cover with the throttling hole 1-3, the speed regulating oil path 1-2 is arranged in the rear cover with the throttling hole 1-3, and the rear cover with the throttling hole 1-3 is also provided with a regulating valve core 1-2 for controlling 1, the front side shell surface and the floating side plate 1-4 of the oil pressure shell 1-6 are provided with bearing holes for mounting the gear 1-1 with a shaft, the oil pressure shell 1-6 is in sealing fit with the floating side plate 1-4, the oil pressure shell 1-6 is provided with an oil inlet 1-6-1 and an oil outlet 1-6-2 on the radial outer side shell surface, the oil pressure shell 1-6 and the floating side plate 1-4 are sealed to form a gear driving oil path 1-1-1, the gear driving oil path 1-1-1 drives a belt shaft gear 1-1 to rotate, the oil inlet 1-6-1 and the oil outlet 1-6-2 are also respectively communicated with two ends of the speed regulating oil way 1-2, so that the speed regulating oil way 1-2 and the gear driving oil way 1-1-1 are connected in parallel; the power generation functional component 2 comprises a motor middle support 1-7, a generator stator assembly 1-8, a generator rotor 1-9, a collector ring and brush carrier assembly 1-10, a charging regulator 1-11, a charging terminal 1-12, a current rectifier 1-13 and a main shaft 1-14, wherein the front section of the main shaft 1-14 is coaxially and fixedly connected with the generator rotor 1-9, the radial outer side of the generator rotor 1-9 is provided with the generator stator assembly 1-8, the generator rotor 1-9 is in clearance fit with the generator stator assembly 1-8, the front end and the rear end of the generator stator assembly 1-8 are respectively fixed on a generator front shell 1-7-1 and a motor middle support 1-7, and a generator front shell 1-7-1, a bearing hole is arranged in the center of a motor intermediate support 1-7, a main shaft 1-14 is stably installed in bearing holes of a generator front shell 1-7-1 and the motor intermediate support 1-7 through a bearing, a collecting ring of a collecting ring and brush holder assembly 1-10 is coaxially fixed at the front end of the main shaft 1-14, a brush holder assembly of the collecting ring and brush holder assembly 1-10 is fixed on the generator front shell 1-7-1, a charging regulator 1-11 and a charging wiring column 1-12 are fixed on the outer side surface of the generator front shell 1-7-1, a current rectifier 1-13 is fixed on the inner side surface of the generator front shell 1-7-1, a generator rotor 1-9 is connected with the current rectifier 1-13 through a collecting ring and brush holder assembly 1-10 through an electric wire, the current rectifier 1-13 is connected with the charging regulator 1-11 through an electric wire, the charging regulator 1-11 is connected with the charging terminal 1-12 through an electric wire, and the charging terminal 1-12 is used for charging the storage battery.

Through the structure, compared with a discrete independent structure in the first embodiment, the hydraulic generator in the first embodiment is an integrated structure, and is very convenient to install and use in a hydraulic system.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A hydraulic generator characterized in that: the hydraulic motor power generation device comprises a hydraulic motor functional part (1) and a power generation functional part (2), wherein the hydraulic motor functional part (1) is a hydraulic motor, the power generation functional part (2) is a power generator, the hydraulic motor functional part (1) drives the power generation functional part (2) to rotate, and the power generation functional part (2) is provided with an output end connected with a load circuit (3).

2. The hydraulic generator of claim 1, wherein: the hydraulic motor functional component (1) is a gear type and blade type hydraulic motor, and the power generation functional component (2) is an alternating current generator.

3. The hydraulic generator of claim 2, wherein: the hydraulic motor functional part (1) is in transmission connection with the power input end of the power generation functional part (2) through a coupler (4).

4. The hydraulic generator of claim 3, wherein: the coupler (4) is a spline coupler.

5. The hydraulic generator of claim 4, wherein: the load of the load circuit (3) is a power-adjustable load.

6. The hydraulic generator of claim 3, wherein: the power generation functional component (2) also comprises a rectifying or voltage regulating device.

7. The hydraulic generator of claim 6, wherein: the hydraulic motor functional part (1) comprises a hydraulic motor and a speed regulation throttling device (5), the speed regulation throttling device (5) is a throttling valve, and the speed regulation throttling device (5) and the hydraulic motor are installed on a loop of a hydraulic system in parallel.

8. The hydraulic generator of claim 7, wherein: the speed regulation throttling device (5) is an adjustable throttling valve.

9. The hydraulic generator of claim 8, wherein: the hydraulic motor functional component (1) is formed by connecting a hydraulic motor and a speed regulation throttling device (5) in parallel through an integrated structure or connecting the hydraulic motor and the speed regulation throttling device in parallel through an independent and discrete structure.

10. The hydraulic generator of claim 8, wherein: the hydraulic motor functional component (1) and the power generation functional component (2) are designed in an integrated structure, and the hydraulic generator comprises a gear (1-1) with a shaft, a speed regulation oil way (1-2), a rear cover (1-3) with a throttling hole, a floating side plate (1-4), a gear (1-5), an oil pressure shell (1-6), a motor middle support (1-7), a generator stator assembly (1-8), a generator rotor (1-9), a collecting ring and brush carrier assembly (1-10), a charging regulator (1-11), a charging wiring column (1-12), a current rectifier (1-13) and a main shaft (1-14); the hydraulic generator comprises a hydraulic motor driving and throttling speed regulation part, a generator and an electric control part; the hydraulic motor functional component (1) comprises a gear (1-1) with a shaft, a speed regulating oil circuit (1-2), a rear cover (1-3) with a throttling hole, a floating side plate (1-4), a gear (1-5) and an oil pressure shell (1-6), the gear (1-1) with the shaft is in transmission connection with the gear (1-5), the gear (1-5) is coaxially and fixedly connected with the rear section part of a main shaft (1-14), the radial outer sides and the front sides of the gear (1-1) with the shaft and the gear (1-5) are the oil pressure shell (1-6), the rear sides of the gear (1-1) with the shaft and the gear (1-5) are the floating side plate (1-4), the rear side of the floating side plate (1-4) is the rear cover (1-3) with the throttling hole, the speed regulating oil circuit (1-2) is arranged in the rear cover (1-3) with the throttling hole, the rear cover (1-3) with the throttling hole is also provided with an adjusting valve core (1-2-1) for controlling the opening of a speed-adjusting oil way (1-2), the front side shell surface of the oil pressure shell (1-6) and the floating side plate (1-4) are provided with bearing holes for mounting a gear (1-1) with a shaft, the oil pressure shell (1-6) is in sealing fit with the floating side plate (1-4), the outer shell surface of the radial outer side of the oil pressure shell (1-6) is provided with an oil inlet (1-6-1) and an oil outlet (1-6-2), the oil pressure shell (1-6) and the floating side plate (1-4) are sealed to form a gear driving oil way (1-1-1), and the gear driving oil way (1-1-1) drives the gear (1-1) to rotate, the oil inlet (1-6-1) and the oil outlet (1-6-2) are also communicated with two ends of the speed-regulating oil way (1-2) respectively, so that the speed-regulating oil way (1-2) is connected with the gear driving oil way (1-1-1) in parallel; the power generation functional component (2) comprises a motor middle support (1-7), a generator stator assembly (1-8), a generator rotor (1-9), a collecting ring and brush carrier assembly (1-10), a charging regulator (1-11), a charging connecting post (1-12), a current rectifier (1-13) and a main shaft (1-14), wherein the front section part of the main shaft (1-14) is coaxially and fixedly connected with the generator rotor (1-9), the generator stator assembly (1-8) is arranged on the radial outer side of the generator rotor (1-9), the generator rotor (1-9) is in clearance fit with the generator stator assembly (1-8), the front end and the rear end of the generator stator assembly (1-8) are respectively fixed on a generator front shell (1-7-1) and a motor middle support (1-7), the generator front shell (1-7-1), the center of the motor intermediate support (1-7) is provided with a bearing hole, the main shaft (1-14) is stably installed in the bearing holes of the generator front shell (1-7-1) and the motor intermediate support (1-7) through a bearing, a collector ring of the collector ring and brush holder assembly (1-10) is coaxially fixed at the front end of the main shaft (1-14), a brush holder assembly of the collector ring and brush holder assembly (1-10) is fixed on the generator front shell (1-7-1), the charging regulator (1-11) and the charging wire column (1-12) are fixed on the outer side surface of the generator front shell (1-7-1), the current rectifier (1-13) is fixed on the inner side surface of the generator front shell (1-7-1), the generator rotor (1-9) is connected with a current rectifier (1-13) through a collecting ring and brush carrier assembly (1-10) through wires, the current rectifier (1-13) is connected with a charging regulator (1-11) through wires, the charging regulator (1-11) is connected with a charging binding post (1-12) through wires, and the charging binding post (1-12) is used for charging a storage battery.