WO2013086772A1

WO2013086772A1 - Self-generating retarder

Info

Publication number: WO2013086772A1
Application number: PCT/CN2012/000789
Authority: WO
Inventors: 刘增岗
Original assignee: 泰乐玛汽车制动系统（上海）有限公司
Priority date: 2011-12-13
Filing date: 2012-06-08
Publication date: 2013-06-20
Also published as: WO2013086771A1; CN103158562A; CN103166422B; CN202663275U; CN103166422A; CN103166421A; CN202679216U

Abstract

A self-generating retarder comprises: a stator assembly (2), comprising at least one magnetic pole, the magnetic poles being all fixed on a support (4); a rotor (1), rotating with respect to the stator assembly (2); and at least one generating device (200), located in the stator assembly (2). The self-generating retarder provided by the present invention is applicable to kinds mobile tools, and overcomes the defect of insufficient braking torque of the retarder incurred by the insufficient current when the retarder is used in large or ultra-large transport.

Description

A retarder with self-generating function

Technical field

The present invention relates to a component for an automobile, and more particularly to an eddy current retarder for a vehicle.

Background technique

The eddy current retarder is an automotive auxiliary brake device. The device is installed between the vehicle drive axle and the gearbox and achieves contactless braking by electromagnetic induction. The eddy current retarder provides a strong braking torque over a wide range of speeds, resulting in safety hazards such as avoiding vehicle deviations, traditional brake failures and punctures, while reducing brake pad wear and extending brake pad life. Customers bring economic benefits and are therefore widely used in motor vehicles, especially large vehicles.

As shown in Fig. 1, Fig. 1 is a typical eddy current retarder in the prior art. The eddy current retarder is composed of a rotor 1, a stator assembly 2, a rotor adjusting washer 3, and a support frame 4. The stator assembly 2 is generally formed by arranging an even number of magnetic poles in a certain positional relationship. Each pole is made of a coil wound on a core. The rotor 1 is connected to a drive shaft (not shown) via a rotor adjustment washer 3. The support frame 4 is used to fix the stator assembly 2 and fix the eddy current retarder to other components inside the vehicle.

When the car is running normally, the rotor 1 rotates with the drive shaft. Since the coil is not energized at this time, the iron core has no magnetic field, so no braking torque is generated. If the coil passes the exciting current, several cores generate several magnetic fields and pass through the rotor. An electromagnetic circuit is formed to generate an eddy current in the rotor 1, and the current-carrying rotor 1 is subjected to a force in a magnetic field, and its acting direction is opposite to the rotation direction of the rotor 1, hindering the rotation of the rotor 1, thereby making the eddy current retarder Generate braking torque. The braking torque generated by the eddy current retarder can be adjusted by the excitation current control device. The greater the excitation current through the coil, the stronger the magnetic field and the greater the braking torque. Therefore, the eddy current retarder requires high power supply to achieve a powerful braking torque. The prior art eddy current retarder is powered by a battery or a generator. The existing truck-configured generator usually has an output current of less than 100 amps and needs to be supplemented by the electric energy of the battery. Due to the limitation of the battery capacity, Excitation current through the coil is often insufficient to generate sufficient braking torque while affecting battery life. Therefore, the prior art eddy current retarder is limited by the shortage of excitation current, which affects the application of the eddy current retarder on large and heavy-duty vehicles.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to overcome the deficiencies in the prior art, and to provide a retarder having a self-generating function.

In order to achieve the above object, the present invention discloses a retarder for a vehicle having a self-generating function, characterized by comprising: a retarder stator assembly, the retarder stator assembly including at least one magnetic pole The magnetic poles are all fixed on a certain sub-frame; a retarder rotor, the rotor rotates relative to the stator assembly; at least one generator, the generator is located in the stator assembly.

Further, the rotor of the generator is coupled to the retarder rotor via a transmission. The stator of the generator is fixed to the stator frame. The retarder rotor is coupled to a rotor pulley. The retarder stator assembly is fixed to a stator sleeve, and the retarder rotor is fixed to a rotor sleeve, and the stator sleeve is coupled to the rotor sleeve through a bearing.

Further, the retarder includes a first generator and a second generator, the stators of the first generator and the second generator are both fixed to the retarder stator assembly, the first generator and the first The rotors of the two generators are all connected to the retarder rotor via a transmission. The transmission device is a belt, and the belt is connected to a rotor pulley. The retarder rotor is connected to the rotor pulley. When the retarder rotor rotates, the rotor of the first generator and the second generator is rotated by the belt. . The rotor of the first second generator further includes a generator pulley, and the generator pulley of the first second generator passes through the transmission and the rotation The sub-pulley is connected, and the generator pulley and the rotor pulley are provided with a plurality of non-slip V-shaped grooves. The first generator and the second generator are fixed to the retarder stator assembly by a bracket. The first generator and the second generator are in close proximity, and the bracket is a "work" shaped rack. The first generator and the second generator are diagonally distributed, and the bracket is a flat frame. The rotor pulley is fixed to a rotor bushing that is fixed to the retarder rotor. The retarder stator assembly is fixed to a certain sub-sleeve, and the stator bushing is connected to the rotor bushing through a bearing. The drive shaft of the vehicle is directly coupled to the rotor bushing.

Compared with the prior art, the retarder provided by the invention has a self-generating function, and converts the rotational torque of the transmission shaft into an excitation current of the retarder through the generator, and converts the excitation current into a braking torque, thereby avoiding The eddy current retarder in the prior art is limited by the shortage of excitation current, which affects the application of the eddy current retarder on large and heavy-duty vehicles. At the same time, in this embodiment, a rotor pulley and a belt are used to simultaneously drive the rotors of the two generators, so that the two generators can work synchronously at the same frequency, so that the currents input by the two generators are stabilized. Since both generators are mounted in the stator disk, no additional space is required. At the same time, the retarder provided by the invention does not need to be installed at the gearbox output port or the rear axle input port of the vehicle, and can be applied to different vehicles, and the installation range is not limited.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and spirit of the present invention will be further understood from the following detailed description of the invention.

1 is a schematic view showing the structure of a vortex retarder which is typical in the prior art; FIG. 2 is a cross-sectional view showing a first embodiment of the retarder according to the present invention; and FIG. 3 is a retarder according to the present invention. Figure 4 is a cross-sectional view showing a second embodiment of the retarder according to the present invention; and Figure 5 is a front view showing a second embodiment of the retarder according to the present invention; Fig. 6 is a cross-sectional view showing a second embodiment of the retarder according to the present invention. Fig. 7 is a front view showing a third embodiment of the retarder according to the present invention.

Main illustration

1 - rotor 2-stator assembly

3 - rotor adjustment washer 4-support frame

100- retarder stator 101- retarder rotor

102 - flange 103 - drive belt

104-rotor pulley 105-stator disk

106-Drive shaft mounting position

200-generator 201-generator rotor

202-generator stator 203-generator pulley

204-generator holder 205-belt

301-bearing 302-rotor bushing

303-stator bushing 304-drive shaft

305-bolt nut preferred embodiment

A retarder having a self-generating function according to a specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention should be construed as being not limited to the embodiments described below, and the technical idea of the present invention can be implemented in combination with other known techniques or other techniques having the same functions as those of the known techniques.

In the following description, in order to clearly illustrate the structure and working mode of the present invention, it will be described by a plurality of directional words. However, "front", "back", "left", "right", Terms such as "outside", "inside", "outward", "inward", "axial", "radial" are understood to be convenience terms and should not be construed as limiting words. Moreover, the term "inside" as used in the following description refers primarily to the side near the drive shaft; the term "outer" primarily refers to the side remote from the drive shaft. The present invention has been described as a typical embodiment for use in an automobile, but those skilled in the art will appreciate that the scope of use of the present invention, not limited to automobiles, can be used on a variety of moving tools. The moving tool referred to in the present invention includes all work for transporting people or objects from one place to another, such as cars, trains, subways, elevators, ropeways, and the like.

The invention provides an automobile retarder with a self-generating function, the vehicle retarder comes with at least one generator, and the generator is used for providing a large current required for the retarder to work, and the generator is located at a slow speed of the vehicle. Inside the device. The retarder includes a retarder stator assembly, the retarder stator assembly includes an even number of magnetic poles, the magnetic poles are fixed on a certain sub-disk; and a retarder rotor, the retarder rotor is opposite The retarder stator assembly rotates to generate a braking torque; the first generator and the second generator; the first and second generators are both fixed to the stator of the retarder stator assembly On the disk, the rotors of the first and second generators are each connected to a rotor pulley through a belt, and the rotor pulley is fixed to the retarder rotor. When the automobile is moving, the drive shaft drives the retarder rotor and the rotor pulley to move. On the one hand, the rotor of the first and second generators rotates. When power generation is required, the control circuit supplies power to the excitation coil of the generator, and the generator generates output current and current is supplied to the generator. The pole coil of the retarder, the greater the exciting current of the coil passing through the magnetic pole, the stronger the magnetic field, the greater the braking torque; on the other hand, when the braking torque is greater than the vehicle moment of inertia of the vehicle during operation, the vehicle Gradually slowing down, the current generated by the generator is reduced, and the braking torque is also reduced accordingly.

Fig. 2 is a cross-sectional view showing a first embodiment of the retarder according to the present invention. As shown in FIG. 2, the retarder includes a retarder stator 100 and a rotor 101. In the first embodiment, the rotor 101 is fixed to the flange 102 by bolts and nuts. Flange 102 through bolt and nut It is fixed to the drive shaft of the vehicle, and the mounting position 106 of the drive shaft is located at the center of the flange 102. In the first embodiment, the stator 100 of this type of retarder is mounted on a vehicle gearbox (not shown). The stator of the eddy current retarder is fixedly connected to the gearbox or the rear axle. When the drive shaft rotates, the flange 102 fixed to the drive shaft rotates, and similarly, the retarder rotor 101 fixed to the flange 102 rotates.

Two generators are provided on the retarder. As shown in FIG. 3, FIG. 3 is a front view of the first embodiment of the retarder according to the present invention. The two generators 200 are placed adjacent to each other, and the two generators are identical in structure and size. The generator 200 is fixed to the stator disk 105 together with the retarder stator 100. Generator 200 includes a generator stator 202 and a generator rotor 201. A generator pulley 203 is included on the generator rotor 201. The outer side of the retarder flange 102 includes a rotor pulley 104. The rotor pulley 104 and the generator pulley 203 are connected by a belt 205. When the flange 102 drives the rotor pulley 104 to rotate, the generator pulley 203 of the two generators also rotates, thereby causing the generator rotor 201 to rotate. In order to enhance the friction of the belt 205 and prevent slipping during high-speed rotation, a plurality of grooves are provided on the rotor pulley 104 and the generator pulley 203 to prevent slippage. The first and second generators are fixed to the stator disk 105 by a generator mount 204. As can be seen in Figure 3, the generator mount 204 is in the shape of a "work". The generator mount 204 and the stator disc 105 are coupled by rivets or bolts and nuts. Compared with the prior art, the retarder provided by the invention has a self-generating function, converts the rotational torque of the transmission shaft into an excitation current of the retarder through the generator, and converts the excitation current into a braking torque, thereby avoiding The eddy current retarder in the prior art is limited by the shortage of excitation current, which affects the application of the eddy current retarder on large and heavy-duty vehicles. At the same time, in this embodiment, a rotor pulley and a belt are used to simultaneously drive the rotors of the two generators, so that the two generators can work at the same frequency, so that the currents input by the two generators are synchronized and stable. Since both generators are mounted in the stator disk, no additional space is required. The present invention also provides a second embodiment. For the description of the second embodiment, please refer to FIG. 4, FIG. 5 and FIG. 4 is a cross-sectional view showing a second embodiment of the retarder according to the present invention, FIG. 5 is a front view showing a second embodiment of the retarder according to the present invention, and FIG. 6 is a perspective view of the present invention. A cross-sectional view of the installation of the second embodiment of the retarder. The retarder in the first embodiment must be connected to the transmission or the rear axle and can only be installed at the gearbox output or the rear axle input. Therefore, when the vehicle body space is limited and there is a transmission and a rear axle In other parts, the retarder cannot be directly connected to the gearbox or rear axle. In fact, the range of use of the retarder is limited. In response to this problem, the present invention provides a second embodiment.

As shown in FIGS. 4 and 5 and 6, the retarder also includes a retarder stator 100, a rotor 101, and two generators. When the eddy current retarder operates, the generator 200 supplies an excitation current to the stator, the stator 100 generates a magnetic field, the cutting magnetic field lines generate an induced current when the rotor 101 rotates, and the stator 100 applies an electromagnetic force to the rotor 101 to generate a braking torque. The stator 100 is fixed to the stator bushing 303 with the stator bushing on the inside. Since the shape of the eddy current retarder is substantially cylindrical, "inside" as used in the present invention means a side close to the central axis of the cylinder, and correspondingly "outside" means a distance from the central axis of the cylinder. One side. In the present embodiment, the stator 100 and the stator bushing 303 are fixed by bolts and nuts. In fact, those skilled in the art will recognize that there are other ways of fixing the two components together, such as welding. When the eddy current retarder is operating, the stator 100 and the stator bushing 303 remain relatively fixed. A certain air gap (not shown) is maintained between the rotor 101 and the stator 100. The rotor 101 is fixed to the rotor bushing 302. In the present embodiment, the rotor 101 and the rotor bushing 302 are fixed by means of bolts and nuts 305. In fact, one of ordinary skill in the art will recognize that there are other ways of securing the two components together, such as splicing. The rotor bushing 302 is a hollow cylindrical object, and the hollow cavity is almost coincident with the center position of the eddy current retarder. The stator bushing 303 and the rotor bushing 302 are connected by a bearing 301, wherein the stator bushing 303 and the rolling bearing 301 are external The side is connected, and the rotor bushing 302 is connected to the inner side of the rolling bearing 301.

The drive shaft 304 of the transmission mechanism of the vehicle is mounted directly within the hollow cavity of the rotor bushing 302. The drive shaft 304 is splined to the rotor bushing 302 for transmitting torque. In general, the drive shaft 304 can also be a drive shaft having a universal joint (not shown). When the drive shaft 304 of the vehicle rotates, the rotor bushing 302 rotates, and the rotor 101 coupled to the rotor bushing 302 starts to move relative to the fixed stator 100, thereby cutting the magnetic lines of force to generate induced current and resistance torque.

Compared with the first embodiment, this embodiment does not require the retarder to be installed at the transmission output port or the rear axle input port of the vehicle, and can be applied to different vehicles, and the installation range is not limited.

In order to further illustrate the invention, a third embodiment will be provided below. As shown in Fig. 7, Fig. 7 is a front view of a third embodiment of the retarder according to the present invention. In the first embodiment, the two generators are placed next to each other. In this implementation, since the contact area of the belt 205 with the pulleys of the two generators is less than 90 degrees, although a plurality of anti-slip grooves are provided on the pulley 203, Once the drive shaft is running at high speed, the belt 205 will still slip. In response to this problem, the present invention provides a third embodiment. In this embodiment, the two generators 200 are placed diagonally, the belts 205 are parallel, and the two generators 200 are fixed to the stator disk 105 by a "one" type support frame 204. In this embodiment, the retarder rotor 101 can be coupled to the drive shaft via the flange 102 or to the drive shaft by means of a rolling bearing. Compared with the first embodiment, the effective contact area of the generator pulley 203 and the belt 205 is greatly increased by more than 150 degrees, effectively preventing the belt 205 from slipping.

The description of the present invention is only a preferred embodiment of the present invention, and the above embodiments are merely illustrative of the technical solutions of the present invention and are not intended to limit the present invention. Techniques that can be obtained by a person skilled in the art in accordance with the inventive concept by logic analysis, reasoning or limited experimentation The solution should be within the scope of the invention.

Industrial applicability

Compared with the prior art, the retarder with self-generating function provided by the invention can be applied to various moving tools, such as automobiles, trains, subways, elevators, ropeways, etc., and overcomes the use in large or very large scale. Defects in retarder braking torque due to insufficient current when on the vehicle. The retarder with self-generating function provided by the invention can effectively convert the mechanical energy during the movement of the automobile into electric energy and supply the retarder, and provides a high-power braking torque for the retarder, thereby overcoming that the retarder cannot be used. Defects on large heavy-duty automotive equipment. At the same time, the retarder with self-generating function provided by the present invention has a compact structure compared with the prior art, which can minimize the area of the retarder and provide more space for the assembly of the automobile.

Claims

Claims: A retarder for a vehicle having a self-generating function, comprising: a retarder stator assembly, said retarder stator assembly comprising at least one magnetic pole, said magnetic poles Fixed to a certain subrack; a retarder rotor, the rotor rotates relative to the stator assembly; at least one generator, the generator is located in the stator assembly. The retarder according to claim 1, wherein the rotor of the generator is coupled to the retarder rotor via a transmission. The retarder according to claim 1, wherein the stator of the generator is fixed to the stator frame. The retarder of claim 1 wherein said retarder rotor is coupled to a rotor pulley. The retarder according to claim 1, wherein the retarder stator assembly is fixed to a stator sleeve, and the retarder rotor is fixed to a rotor sleeve, the stator shaft The sleeve is coupled to the rotor sleeve by a bearing. The retarder according to claim 1, wherein the retarder comprises a first generator and a second generator, and stators of the first generator and the second generator are both fixed and On the retarder stator assembly, the rotors of the first generator and the second generator are each coupled to the retarder rotor via a transmission. The retarder according to claim 6, wherein the transmission device is a belt, the belt is coupled to a rotor pulley, and the retarder rotor is coupled to the rotor pulley, the retarding speed The rotor of the first generator and the second generator is rotated by the belt when the rotor rotates. The retarder according to claim 7, wherein the rotor of the first second generator further comprises a generator pulley, and the generator pulley of the first second generator passes the The transmission device is connected to the rotor pulley, and the generator pulley and the rotor pulley are provided with a plurality of anti-slip V-shaped grooves. The retarder of claim 6 wherein said first generator and said second generator are fixed to said retarder stator assembly by a bracket. 0. The retarder according to claim 9, wherein the first generator and the second generator are in close proximity, and the bracket is a "work" shaped bracket.

1. The retarder of claim 9 wherein said first generator and said second generator are diagonally distributed and said bracket is an "L" shaped bracket. 2. The retarder of claim 7 wherein said rotor pulley is fixed to a rotor bushing, said rotor bushing being fixed to said retarder rotor. The retarder according to claim 12, wherein the retarder stator assembly is fixed to a stator bushing, and the stator bushing is coupled to the rotor bushing via a bearing.

The retarder according to claim 12, wherein the transmission shaft of the vehicle is directly coupled to the rotor bushing.