CN211039469U

CN211039469U - Hydraulic-electric composite retarder with radial arrangement structure

Info

Publication number: CN211039469U
Application number: CN201921923765.7U
Authority: CN
Inventors: 李德胜; 孙耀龙; 田金山; 吕强; 谢立
Original assignee: Beijing University of Technology
Current assignee: Beijing University of Technology
Priority date: 2019-11-09
Filing date: 2019-11-09
Publication date: 2020-07-17
Anticipated expiration: 2029-11-09

Abstract

The utility model discloses a liquid-electricity composite retarder with a radial arrangement structure, which adopts the arrangement mode that an electric vortex part is designed on an outer ring and a hydraulic part is designed on an inner ring; the eddy current part adopts an embedded eddy current retarder with small axial dimension, and the hydraulic part adopts an arc-shaped blade hydraulic retarder which is easy to process. The advantages of quick response time of eddy current braking, simple structure, good braking effect on a high-speed section of the hydraulic retarder, light weight, low power consumption and the like are combined together, so that the eddy current braking at a low-speed section is mainly realized, and the hydraulic braking is assisted; the braking effect of taking eddy current braking as auxiliary and hydraulic braking as main at the high-speed section is achieved; instantaneous eddy current braking is mainly used, and hydraulic braking is used as an auxiliary brake. The structure that the eddy current braking part and the hydraulic braking part are distributed in the same radial space is adopted, so that the axial size is greatly shortened, and the weight is reduced; effectively inhibit the heat fading of the eddy current retarding part.

Description

Hydraulic-electric composite retarder with radial arrangement structure

Technical Field

The utility model relates to a liquid electricity composite retarder of radial arrangement structure with the integrated design of eddy current retarder and hydraulic retarder integration, belongs to the car auxiliary brake field.

Background

The automobile retarder is a non-contact auxiliary brake device and can be mainly divided into an eddy current retarder and a hydraulic retarder according to different working principles. The eddy current retarder utilizes the device that the rotating metal disc rotates in a magnetic field to generate eddy current so as to generate a reverse magnetic field to retard, and the switch and the braking torque of the retarder can be controlled only by adjusting the on-off of the current of the magnet exciting coil, so that the response time is fast, the structure is simple, and the braking effect is good at low speed. The eddy current retarder has a long development history and perfect development, and is widely applied abroad. The hydraulic retarder is braked by a hydraulic device, has small volume and large braking torque, the braking torque is in direct proportion to the square of the diameter of the retarder, the braking torque is also related to the liquid amount in a working cavity of the device, the pressure and the vehicle speed, the braking effect is very good at high speed, and the braking torque approaches zero at low speed.

No matter be eddy current retarder or hydraulic retarber, all belong to non-contact arresting gear, except can stably reducing the speed of a motor vehicle, can also reduce wheel brake temperature, improve the friction disc life-span, improve security, the ride comfort that the car went. According to the relevant regulations of national standard GB12676-1999 automobile brake system structure, performance and test method, for the M3 passenger car with maximum total mass more than 10000kg of non-city passenger car, the passenger car can run on the slope of 7% with the average speed of 30km/h for 6km in full load and downhill under the condition of only using the retarder.

SUMMERY OF THE UTILITY MODEL

The utility model discloses with the integrated design of eddy current retarder and hydraulic retarber, radially arrange, eddy current retards the fast part outside, including hydraulic retards the fast part, has reduced the axial dimensions of compound retarber, fast eddy current response time, low-speed section braking advantage such as effectual and hydraulic retarber are small, and high-speed section braking advantage such as effectual combines, has realized the response fast, the effect of full speed section braking.

A kind of liquid electric compound retarder of radial arrangement structure, including the electric eddy current retarding part and the hydraulic retarding part.

The eddy current retarding part consists of an excitation coil, eddy current rotor teeth, a rotor disc and a retarder stator, and the eddy current retarding part is of an embedded structure. The excitation coil is formed by winding a conducting wire and is fixed on the side wall of the retarder stator; the inner ring and the outer ring of the eddy current rotor tooth are cambered surfaces and are arranged on the eddy current retarding stator outside the coil, and air gaps are formed on the upper surface and the lower surface of the eddy current rotor tooth and the upper surface and the lower surface of the eddy current retarding stator; the rotor disc plays a role in fixing the eddy current rotor teeth, and the rotor disc is connected with the transmission shaft to drive the rotor teeth to synchronously rotate with the shaft; the eddy current retarding stator integrates an eddy current part and a hydraulic part, the outer ring of the eddy current retarding stator is used as the eddy current stator, and the eddy current retarding stator, rotor teeth and an air gap form a closed magnetic circuit together.

The hydraulic retarding part consists of an inner ring of a retarder stator 3, an oil inlet 4 and hydraulic rotor teeth 10. The inner circle of the retarder stator is internally provided with arc-shaped stator teeth, and the outer side of the retarder stator is provided with an oil supply cavity. The circular circle of the inner ring of the rotor disc is provided with arc-shaped hydraulic rotor teeth. The working fluid of the hydraulic retarding part enters an oil supply cavity from an oil inlet on an oil seal cover and then enters a circulating circle formed by arc-shaped stator teeth and hydraulic rotor teeth through an oil filling hole on the circulating circle side wall of the hydraulic stator, the circulating work is completed under the driving of the rotor teeth, and then the working fluid is discharged from an oil outlet through the oil supply cavity from the oil filling hole on the circulating circle side wall of the stator, so that the braking heat is taken away, the working fluid is stably circulated, and the heat fading of the eddy current retarding part is effectively inhibited.

The eddy current part and the hydraulic part of the composite retarder are radially arranged, the eddy current part is arranged at the inner ring of the outer ring hydraulic part, the stator and the inner ring of the rotor disc are used as working cavities of the hydraulic part, the requirement on the axial dimension is reduced, the two parts are mutually connected by cooling liquid when working, and the eddy current part controls the braking torque of the eddy current part by adjusting the size of the electrified current of the eddy current part; the braking torque of the hydraulic part is adjusted by adjusting the size and the flow of the working fluid inlet of the hydraulic part.

Drawings

Fig. 1 is a front view of a hydro-electric composite retarder of a radial arrangement structure of the utility model.

Fig. 2 is a liquid circuit circulation and magnetic circuit diagram of a radial arrangement structure of the hydraulic-electric composite retarder of the utility model.

Fig. 3 is a schematic view of a stator of a radial-arrangement-structured electrohydraulic composite retarder of the present invention.

Fig. 4 is a schematic view of a hydro-electric composite retarder rotor with a radial arrangement structure of the utility model.

Fig. 5 is a schematic diagram of a rotor disc (hydraulic rotor teeth) of a radial-arrangement-structured hydraulic-electric composite retarder of the utility model.

In the figure: the hydraulic retarder comprises an eddy current retarding part 1, a hydraulic retarding part 2, a retarder stator 3, an oil inlet 4, an oil supply cavity 5, a transmission shaft 6, an oil filling hole 7, a magnet exciting coil 8, eddy current rotor teeth 9, hydraulic rotor teeth 10, hydraulic stator teeth 11, a rotor disk 12, a magnetic circuit 13, a circulating liquid circuit 14 and a hydraulic circulating circle 15.

Detailed Description

The following describes the present invention with reference to the accompanying drawings.

As shown in fig. 1, for the compound hydraulic-electric retarder with radial arrangement structure of the present invention, the retarder mainly includes an electric vortex retarding part 1 and a hydraulic retarding part 2.

The eddy current retarding part 1 adopts an embedded structure and consists of an outer ring of a retarder stator 3, an excitation coil 8, eddy current rotor teeth 9 and a rotor disc 12. The retarder stator 3 is integrally designed, the outer ring of the retarder stator 3 is used as an electromagnetic retarding part, and a wire outlet is formed in the left side. The exciting coil 8 is formed by winding a conducting wire, an outlet of the retarder stator 3 is internally and externally provided with an outlet, and the coil of the exciting coil 8 is fixed in the retarder stator 3 by a coil welding plate. The inner and outer rings of the eddy current rotor teeth 9 are both arc-shaped, air gaps are formed between the inner and outer rings and the upper and lower surfaces of the retarder stator 3, and the side surfaces of the eddy current rotor teeth are connected with the rotor disc 12 and synchronously rotate together with the transmission shaft 6. The rotor disc 12 is integrally designed and is of a disc-shaped structure, and the outer ring of the rotor disc 12 is connected with the eddy current rotor teeth 9.

The hydraulic retarding part 2 consists of an inner ring of a retarder stator 3, an oil inlet 4 and hydraulic rotor teeth 10. The inner ring part of the retarder stator 3 is provided with hydraulic stator teeth, the side surface of the retarder stator is provided with an oil supply cavity 5, the side surface of the retarder stator is provided with hydraulic stator teeth 11, and the circular side wall of the hydraulic stator teeth 11 is provided with a circle of oil injection holes 7 which are connected with the oil supply cavity 5 and a hydraulic part working cavity. The disc-shaped oil sealing cover is tightly connected with the retarder stator 3, and an oil inlet and an oil outlet are formed in the side face of the disc-shaped oil sealing cover. Hydrodynamic rotor teeth 10 are provided at the inner ring of a rotor disc 12, the rotor disc 12 being keyed and bolted to the drive shaft 6. A hydrodynamic part working chamber is formed between the inner ring of the retarder stator 3 and the inner ring of the rotor disc 12.

As shown in fig. 2, in the hydraulic-electric compound retarder with the parallel arrangement structure, a closed magnetic circuit is formed between the retarder stator, the eddy current rotor teeth 9 and the air gap between the rotor teeth and the retarder stator. The liquid path of the working fluid is that the working fluid enters an oil supply cavity 5 from an oil inlet 4 at the upper left side of the retarder, enters a hydraulic retarding part circulation circle 15 of the retarder through an oil filling hole 7, circulates for a circle in the hydraulic part working cavity, and then returns to the oil supply cavity 5 through the oil filling hole 7 to be discharged through an oil outlet.

The above description is only for the purpose of explanation, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a liquid electricity composite retarder of radial arrangement structure which characterized in that: comprises an eddy current retarding part (1) and a hydraulic retarding part (2);

the eddy current retarding part (1) adopts an embedded structure and consists of an outer ring of a retarder stator (3), a magnet exciting coil (8), eddy current rotor teeth (9) and a rotor disc (12); the outer ring of the retarder stator (3) is used as an electromagnetic retarding part, and the left side of the retarder stator is provided with a wire outlet; the excitation coil (8) is formed by winding a conducting wire, an outlet of the retarder stator (3) is divided into an inner ring and an outer ring to be led out, and a coil of the excitation coil (8) is fixed in the retarder stator (3) through a coil welding plate; the inner ring and the outer ring of the eddy current rotor teeth (9) are both arc-shaped, air gaps are formed between the inner ring and the outer ring and the upper surface and the lower surface of the retarder stator (3), and the side surfaces of the eddy current rotor teeth are connected with the rotor disc (12) and synchronously rotate together with the transmission shaft (6); the outer ring of the rotor disc (12) is connected with the eddy current rotor teeth (9);

the hydraulic retarding part (2) consists of an inner ring of a retarder stator (3), an oil inlet (4) and hydraulic rotor teeth (10); the inner ring part of the retarder stator (3) is provided with hydraulic stator teeth, the side surface of the retarder stator is provided with an oil supply cavity (5), the side surface of the retarder stator is provided with hydraulic stator teeth (11), and the circular side wall of each hydraulic stator tooth (11) is provided with a circle of oil injection holes (7) which are connected with the oil supply cavity (5) and a hydraulic part working cavity; the disc-shaped oil sealing cover is tightly connected with the retarder stator (3), and the side surface of the disc-shaped oil sealing cover is provided with an oil inlet and an oil outlet; the hydrodynamic rotor teeth (10) are arranged at the inner ring of a rotor disc (12), and the rotor disc (12) is connected with the transmission shaft (6) through keys and bolts.

2. The electrohydraulic composite retarder of a radial arrangement structure according to claim 1, characterized in that: the rotor disc (12) is a disc-shaped structure.

3. The electrohydraulic composite retarder of a radial arrangement structure according to claim 1, characterized in that: a hydraulic part working cavity is formed between the inner ring of the retarder stator (3) and the inner ring of the rotor disc (12).

4. The electrohydraulic composite retarder of a radial arrangement structure according to claim 1, characterized in that: a closed magnetic circuit is formed between the retarder stator (3), the eddy current rotor teeth (9) and the air gap between the rotor teeth and the retarder stator.

5. The electrohydraulic composite retarder of a radial arrangement structure according to claim 1, characterized in that: the liquid path of the working liquid is that the working liquid enters an oil supply cavity (5) from an upper left oil inlet (4) of the retarder, enters a hydraulic retarding part circulation circle (15) of the retarder through an oil filling hole (7), circulates for a circle in the hydraulic part working cavity, and returns to the oil supply cavity (5) through the oil filling hole (7) to be discharged through an oil outlet.