CN217081187U - No-load energy consumption reducing device of hydraulic retarder - Google Patents

Abstract

A no-load energy consumption reduction device for a hydraulic retarder relates to the technical field of vehicle auxiliary devices. Comprises a shell, wherein a working cavity is arranged in the shell; the stator and the rotor are oppositely arranged in the working cavity, and a working gap is formed between the stator and the rotor; further comprising: the vortex device sets up in the working gap for the casing telescopically, and it includes: the elastic assembly drives the spoiler to reciprocate in the working gap along the radial direction of the rotor so as to shield part of the working gap, the elastic assembly comprises a spoiler piston, an elastic body and a plug which are sequentially connected, and two ends of the elastic body are respectively abutted against the spoiler piston and the plug; the plug is arranged on the shell and used for plugging the turbulent flow device; the no-load energy consumption reducing device of the hydrodynamic retarder is provided with an oil return channel, and the oil return channel is communicated with the turbulence device and the stator oil inlet buffer cavity. The application provides a hydraulic retarber's greatly reduced hydraulic retarber energy consumption when no-load, and the reliability is high, easily manufacturing.

Description

No-load energy consumption reducing device of hydraulic retarder

Technical Field

The utility model relates to a commercial car auxiliary device technical field, concretely relates to hydraulic retarber falls unloaded energy consumption device.

Background

The hydraulic retarder is a device for generating anti-drag torque on a vehicle by utilizing the damping effect when oil flows, and is usually matched with a commercial vehicle to bear auxiliary braking at present so as to ensure that the service life of a main braking system is shortened and the safety of the vehicle is effectively ensured in the process of long downhill of the vehicle. The hydraulic retarder mainly comprises a rotor and a stator. When the hydrodynamic retarder is in a working state, after oil enters a working cavity between the rotor and the stator, the oil rotates in an accelerating way under the action of the rotor and impacts the stator, the oil is impacted by the stator blades and then acts on the rotor in a reverse way, so that the rotor is subjected to reverse braking force, and the rotor transmits the braking force to a vehicle transmission shaft, so that the vehicle is decelerated. When the hydrodynamic retarder is in a non-working state, a mixture of working medium and air exists between the stator and the rotor, and the mixture does not stop between the stator and the rotor to circulate to generate idle blocking torque. Along with the increase of the vehicle speed, the idle rotation blocking torque is increased, and the increased oil consumption accounts for the non-negligible percentage of the oil consumption of the whole vehicle.

At present, solutions for reducing the no-load energy consumption of the hydraulic retarder exist in literature and practical application, and the existing solutions all have the defects of complex structure, large installation space, large processing difficulty, low reliability and the like. The document CN 205503815U, CN 106931057A adopts a mechanical structure with a separated stator and rotor to reduce the idle energy consumption of the hydrodynamic retarder, and specifically, a set of helical involute spline pair is provided on the rotor and the transmission shaft thereof, and the spline pair is non-self-locking and can also move axially when the rotor rotates. When the rotor works, the working medium impacts the rotor to rotate at a high speed, and meanwhile, the rotor moves axially and is close to the stator. When the rotor idles, the compression spring arranged on the shafting pushes the rotor away and enlarges the working gap between the stator and the rotor, so that the circulating flow of residual working medium and air between the stator and the rotor during idling is weakened, and the fuel consumption during idling is reduced. But the manufacturing and detection costs of the non-self-locking spiral involute spline pair involved in the scheme are higher, more importantly, the spline pair is matched with a sliding working clearance, the sliding friction is frequently increased, and the working clearance is larger and larger. After the abrasion reaches a certain degree, the rotor loses the original dynamic balance state when rotating due to too large working clearance, thereby causing the faults of overlarge vibration quantity of a transmission system, abnormal transmission sound and the like.

The solution known from document CN112815023A is to provide spoilers between the stator and rotor to suppress the back-and-forth circulating flow of residual working medium and air during idling. The piston, the spoiler and the spring are arranged on the shell, and in a working state, high-pressure working medium pushes the piston to be far away from the axis of the stator and the rotor, and meanwhile, the spoiler and the piston are separated from a working gap between the stator and the rotor, and the working medium can normally circulate between the stator and the rotor in a reciprocating mode. When idling, the spring pushes the piston and the spoiler to be close to the center of the rotor, and the spoiler enters a gap between the stator and the rotor to block residual working medium and air from flowing during idling, so that fuel consumption during idling is reduced. But the mechanical structure of the device has low reliability and partial performance does not reach the standard. The spoiler fixing assembly mentioned in the document is provided with a sealing ring, once the sealing ring fails, high-pressure and high-temperature working media are directly sprayed to the outside, and a mechanical structure for recovering high-temperature oil is omitted. In order to ensure that the sealing ring is high-pressure resistant, the sealing ring needs high tension, and due to the existence of the high tension, the movement of the fixed component of the spoiler has large damping and cannot move quickly, so that the working response time and the closing response time of the hydraulic retarder are directly prolonged under the working condition, and the requirements on the performance of the rear hydraulic retarder of the commercial vehicle QC/T1046 and 2016 and a bench test method are not met. Therefore, a hydraulic retarder with a relatively simple structure, small processing difficulty and high reliability needs to be designed.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a technical problem that solves lies in overcoming among the prior art hydraulic buffer and falls idle load energy consumption device's structure complicacy, installation space are big, the processing degree of difficulty is big, the reliability low grade defect to a hydraulic retarber falls idle load energy consumption device is provided, include: the device comprises a shell, a working cavity and a connecting rod, wherein the shell is internally provided with the working cavity; the stator and the rotor are oppositely arranged in the working cavity, and a working gap is formed between the stator and the rotor; further comprising: the vortex device, install in on the casing, and for the casing telescopically set up in the working gap, the vortex device includes: the elastic assembly drives the spoiler to reciprocate in the working gap along the radial direction of the rotor so as to shield part of the working gap, and the elastic assembly comprises a spoiler piston, an elastic body and a plug which are sequentially connected, wherein the spoiler piston is arranged in the shell in a sliding manner and is connected with the spoiler; two ends of the elastic body are respectively abutted against the turbulent flow piston and the plug; the plug is arranged on the shell and used for plugging the turbulence device and preventing the working medium from leaking; the no-load energy consumption reducing device of the hydraulic retarder is provided with an oil return channel, the oil return channel is communicated with the flow disturbing device and the stator oil inlet buffer cavity, and the oil inlet buffer cavity is a buffer area between the tail end of the working cavity oil inlet channel and an oil inlet of a stator blade.

Optionally, the spoiler piston is disposed on a side of the spoiler away from the working gap.

Optionally, the spoiler piston is clearance fit with the housing.

Optionally, the spoiler is a profiled sheet-like structure extending in the circumferential direction of the rotor; an accommodating groove capable of accommodating the spoiler is formed in the inner side wall of the shell; the spoiler can be retracted into the accommodating groove.

Optionally, the spoiler is provided with guide bars, and the guide bars are arranged at two ends of the spoiler, or arranged in the middle of the spoiler.

Optionally, one surface of the plug, which is abutted against the elastic body, is provided with a retaining end surface.

Optionally, the flow perturbation means is provided with at least one.

The technical scheme of the embodiment of the utility model, following advantage has:

1. the embodiment of the utility model provides a hydraulic retarber falls no-load energy consumption device, a simple structure, the hydraulic reducer that the reliability is high falls no-load energy consumption device, especially, a hydraulic reducer who is used for the motor vehicle drive line, for example, be used for lorry or rail vehicle's hydraulic reducer, the hydraulic reducer who has this energy consumption device that falls can effectively reduce by installing the additional fuel consumption that causes of hydraulic retarber additional, also can effectively reduce hydraulic retarber manufacturing cost simultaneously, hydraulic retarber uses the reliability and has great improvement. Simultaneously the hydraulic retarber that this application provided's volume is less, easily installs additional on the vehicle chassis.

2. The embodiment of the utility model provides a hydraulic retarber falls no-load energy consumption device, its vortex device that is equipped with, simple structure for pure mechanical type structure, adopts the labyrinth of self, improves greatly than non-metallic seal piece reliability. During idle running, because the utility model relates to a vortex device has hindered the circulation of working medium between stator rotor in principle completely, and has only slowed down the circulation of working medium between stator rotor with drawing big working gap between the stator rotor and compare, the utility model discloses a hydraulic retarber idle running energy consumption is lower.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a specific example of an oil path of an idling energy consumption reducing device of a hydrodynamic retarder in an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of a specific example of the no-load energy consumption reducing device of the hydrodynamic retarder in the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a specific example of the idling reduction device for the hydraulic retarder in the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a specific example of the hydraulic retarder load energy consumption reducing device in the embodiment of the present invention during operation;

fig. 5 is a schematic structural diagram of a specific example of a spoiler in an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a specific example of an end cap in an embodiment of the present invention;

reference numerals:

1-rotor driving shaft, 2-working gap, 3-rotor, 4-shell, 41-accommodating groove, 5-turbulence device, 51-turbulence plate, 511-guide bar, 52-turbulence piston, 53-elastomer, 54-oil return channel, 541-oil return channel outlet, 55-plug, 551-stopping end face, 6-stator, 8-control gas pressure regulating valve, 9-oil storage cavity, 10-heat exchanger and 11-oil inlet buffer cavity.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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.

In describing the present invention, it is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "mounted," "connected," and "coupled" are to be construed broadly and may include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Examples

The embodiment provides a no-load energy consumption reduction device for a hydraulic retarder, which comprises a shell 4, wherein a working cavity is arranged in the shell 4; the stator 6 and the rotor 3 are oppositely arranged in the working cavity, and a working gap 2 is formed between the stator 6 and the rotor 3; it is characterized by also comprising: vortex device 5 installs on casing 4 to set up in working gap 2 telescopically for casing 4, vortex device 5 includes: the rotor comprises a spoiler 51 and an elastic assembly, wherein the elastic assembly drives the spoiler 51 to reciprocate in the radial direction of the rotor 3 in the working gap 2 so as to shield part of the working gap 2, and the elastic assembly comprises a spoiler piston 52, an elastic body 53 and a plug 55 which are sequentially connected, wherein the spoiler piston 52 is arranged in the shell 4 in a sliding manner and is connected with the spoiler 51; two ends of the elastic body 53 are respectively abutted against the turbulent flow piston 52 and the plug 55; the plug 55 is arranged on the shell 4 and used for plugging the turbulent flow device 5 and preventing the working medium from leaking; the no-load energy consumption reducing device of the hydrodynamic retarder is provided with an oil return channel 54, the oil return channel is communicated with the turbulence device and the oil inlet buffer cavity 11 of the stator 6, and the oil inlet buffer cavity 11 is a buffer area from the tail end of the oil inlet channel of the working cavity to an oil inlet of a blade of the stator 6.

As shown in fig. 1, for the working principle diagram of the hydrodynamic retarder, the buffer is driven by the speed-increasing gear of the transmission, the rotor 3 of the retarder is coaxial with the gear, the gear is meshed with the speed-increasing gear of the transmission to realize the speed-increasing effect, when the retarder is in the braking state, the control unit of the retarder communicates with the related mechanisms, and the working process is as follows: when the switch is turned on, the retarder can receive a signal from the control unit, and the control unit controls the gas pressure regulating valve 8 to regulate compressed air entering the oil cavity, the oil is pressed into a working gap 2 formed by the stator 6 and the rotor 3 in the oil working cavity, when the retarder works, the rotor 3 can be driven by the speed-increasing gear to rotate the oil and send the oil to the stator 6, after the flowing direction of the oil is changed, the oil can be pressed back to act on the rotor 3 again, a reaction force can be generated at the moment, then the rotor 3 can be decelerated, after gear meshing, the braking force is transmitted to the whole vehicle, so that the vehicle is decelerated, in the process of braking by the buffer, the kinetic energy of the vehicle can be converted into heat energy, and the oil carrying heat can be dissipated out through the heat exchanger 10 and flows circularly. In this embodiment, a spoiler 5 is additionally provided in the working gap 2 between the stator 6 and the rotor 3 to suppress the reciprocating circulating flow of the residual working medium and air during idling.

Specifically, as shown in fig. 1-6, the rotor driving shaft 1 axially penetrates through the housing 4, the housing 4 is provided with a working chamber and an oil storage chamber 9 according to functional zones, which mainly play a role in supporting and fixing the stator 6 and the rotor 3, and the rotor 3 is coupled with the rotor driving shaft 1 through an involute spline pair; a spoiler 5 is arranged in the working gap 2 formed by the stator 6 and the rotor 3 to shield a portion of the flow passage therebetween, thereby attenuating the impact of the working medium and air mixture on the spoiler 51. Turbulent flow piston 52, elastomer 53 and end cap 55 of elastic component connect gradually, specifically: the turbulent flow piston 52 is arranged in the shell 4 in a sliding mode, the elastic body 53 is arranged between the turbulent flow piston 52 and the plug 55 in a telescopic mode along the radial direction of the rotor 3, an elastic body 53 mounting seat hole is formed in the back of the turbulent flow piston 52, the elastic body 53 is connected with the turbulent flow piston 52 through the mounting hole, the plug 55 is arranged on the shell 4 and used for preventing working media from leaking, and compared with the arrangement of a sealing ring, the anti-leakage structure can improve the stability and reliability of the turbulent flow device 5; the spoiler piston 52 is rigidly connected to the spoiler 51, and the elastic body 53 reciprocates between the spoiler piston 52 and the plug 55 to shield a portion of a flow passage therebetween.

When the hydraulic retarder is in a working state, the outer edge of the rotor 3 in the working cavity belongs to a high-pressure area, high-pressure working medium pushes the spoiler piston 52 to retreat and keep away from the axes of the stator 6 and the rotor 3, meanwhile, the spoiler 51 and the piston leave the working gap 2 between the stator 6 and the rotor 3, and the working medium can normally circulate back and forth between the stator 6 and the rotor 3.

When the hydrodynamic retarder is in a non-working state, the static pressure of the mixture of the residual working medium and air in the working cavity is close to normal pressure, the acting force on the turbulence piston 52 is small, and the acting force is smaller than the elastic force exerted by the elastic body 53 on the turbulence piston 52, so that the turbulence piston 52 moves in the direction close to the working gap 2 along the radial direction, and meanwhile, the turbulence sheet 51 is pushed into the working gap 2, and the working medium is prevented from flowing to the stator 6 from the outer edge of the rotor 3; further, the spoiler 51 covers the outer edges of both the rotor 3 and the stator 6 away from the center point in the radial direction; therefore, the blocking torque of the hydraulic retarder during idling is greatly reduced, and the fuel consumption of a corresponding vehicle increased by additionally arranging the hydraulic retarder is greatly reduced.

As shown in fig. 2, an oil return passage 54 is provided in the spoiler 5, and an oil return passage outlet 541 is communicated with the oil inlet buffer chamber 11 of the stator 6. When the spoiler piston 52 slides along the housing 4, the spoiler piston 52 may be slightly leaked due to poor sealing. In order to prevent the leaked minute amount of working medium from accumulating to hinder the operation of the disturbing flow-interfering flow piston 52, it is necessary to carry away the accumulated leaked working medium. A flow spoiler 5 oil return channel 54 is thus provided in the flow spoiler 5, which oil return channel 54 can carry away the accumulated leakage working medium. A flow perturbation device 5 oil return channel 54 is thus provided in the flow perturbation device 5, and the outlet of this channel is in communication with the stator 6 oil inlet buffer chamber 11, so that the returned medium flows into the stator 6 oil inlet buffer chamber 11.

Optionally, the spoiler piston 52 is arranged on a side of the spoiler 51 remote from the working gap 2.

The side of the spoiler 51 remote from the working gap 2 can be understood to be the rear of the spoiler 51.

Optionally, the spoiler piston 52 is clearance fit with the housing 4.

In this embodiment, in order to improve the corresponding working time and closing time of the hydrodynamic retarder and improve the reliability of the spoiler device 5, the spoiler piston 52 is matched with the housing 4 matched with the spoiler piston by the sliding type working gap 2, and the spoiler piston 52 can move quickly and smoothly in the housing 4 seat, so that the damping phenomenon is avoided.

Alternatively, the stopper 55 may have a stopper end surface 551 on a surface thereof abutting against the elastic body 53.

Alternatively, as shown in fig. 2 to 6, the spoiler 51 is a deformed sheet-like structure extending in the circumferential direction of the rotor 3; the inner side wall of the shell 4 is provided with an accommodating groove 41 matched with the spoiler 51; the spoiler 51 may be retracted into the receiving groove 41.

In this embodiment, when the hydrodynamic retarder is in a working state, the spoiler piston 52 retracts, and when the spoiler piston pushes against the anti-retraction end surface 551 of the plug 55 of the spoiler device 5, the spoiler piston retracts to a proper position; and at this moment, the spoiler 51 retreats into the accommodating groove 41 and is completely withdrawn from the working medium circulation circle, so that the working medium is ensured to smoothly flow between the stator 6 and the rotor 3.

In the assembling process, the spoiler 51 is firstly retracted into the accommodating groove 41, the stator 6, the rotor 3, the rotor driving shaft 1 and the bearing are integrally and hermetically arranged in the shell 4, then the elastic body 53 is arranged in the spring seat in the spoiler piston 52, and finally the plug 55 of the spoiler 5 is arranged.

Further, the spoiler 51 is a shaped plate structure extending in the circumferential direction of the rotor 3, and has an arc-shaped end surface so as to be stopped and positioned when the spoiler piston 52 hits the outer circumferential surface of the stator 6.

Namely, the outer circle surface of the stator 6 and the stopping end surface 551 of the plug 55 are two limiting surfaces of the piston, and play a role in positioning the movement of the piston.

Alternatively, as shown in fig. 5, the spoiler 51 is provided with guide bars 511, and the guide bars 511 are disposed at both ends of the spoiler 51, or disposed in the middle of the spoiler 51.

In this embodiment, in order to ensure that the spoiler 51 is smoothly stretched between the working gap 2 of the stator 6 and the rotor 3 and the accommodating groove 41 and prevent the occurrence of the clamping stagnation, a guide strip 511 is added to the spoiler 51 to guide the stretching movement of the spoiler.

Optionally, at least one spoiler 5 is provided.

The vortex device 5 can be provided with a plurality ofly, and in this embodiment, vortex device 5 is provided with threely, and arranges along 3 circumference of rotor, and vortex device 5 is more even to 2 vortex processes of working gap between stator 6 and the rotor 3 at flexible in-process like this, and the effect is better.

In this embodiment, the turbulent flow piston 52 is made of wear-resistant ductile iron, and the housing 4 is made of a metal material, which is beneficial to smooth sliding of the piston in the housing 4.

The utility model provides a hydraulic retarder falls no-load energy consumption device, simple structure, reliability are high, especially are arranged in heavy tractor hydraulic retarber to use, of course, do not do the injecing here on the hydraulic retarber of equipartition on the equal grade of other trucks, engineering vehicle, rail vehicle, the bus of doing. The hydraulic retarder with the energy consumption reducing device can effectively reduce fuel consumption caused by additionally arranging the hydraulic retarder, and meanwhile, the manufacturing cost of the hydraulic retarder can be effectively reduced, and the use reliability of the hydraulic retarder is greatly improved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (7)

1. A no-load energy consumption reduction device of a hydraulic retarder comprises a shell (4), wherein a working cavity is arranged in the shell (4); the stator (6) and the rotor (3) are oppositely arranged in the working cavity, and a working gap (2) is formed between the stator (6) and the rotor (3); it is characterized by also comprising:

flow perturbation device (5), install in on casing (4), and for casing (4) telescopically set up in during working gap (2), flow perturbation device (5) include: the spoiler assembly comprises a spoiler (51) and an elastic assembly, wherein the elastic assembly drives the spoiler (51) to reciprocate in the working gap (2) along the radial direction of the rotor (3) so as to shield part of the working gap (2), the elastic assembly comprises a spoiler piston (52), an elastic body (53) and a plug (55) which are sequentially connected, and the spoiler piston (52) is arranged in the shell (4) in a sliding manner and is connected with the spoiler (51); two ends of the elastic body (53) are respectively abutted against the turbulent flow piston (52) and the plug (55); the plug (55) is arranged on the shell (4) and used for plugging the turbulence device (5) to prevent working medium from leaking; the no-load energy consumption reducing device of the hydrodynamic retarder is provided with an oil return channel (54), the oil return channel (54) is communicated with the flow disturbing device and the stator (6) oil inlet buffer cavity (11), and the oil inlet buffer cavity (11) is a buffer area from the tail end of the working cavity oil inlet channel to an oil inlet of a blade of the stator (6).

2. A hydrodynamic retarder load-reducing energy consumption device according to claim 1, characterized in that the spoiler piston (52) is arranged at a side of the spoiler (51) remote from the working gap (2).

3. A hydrodynamic retarder load-reducing energy consumption device according to claim 2, characterized in that the spoiler piston (52) is clearance-fitted to the housing (4).

4. A hydrodynamic retarder load-reducing energy consumption device according to claim 3, characterized in that a stop end surface (551) is provided on the surface of the plug (55) abutting against the elastic body (53).

5. A hydrodynamic retarder load-reducing energy consumption device according to claim 4, characterized in that the spoiler (51) is a profiled sheet-like structure extending in the circumferential direction of the rotor (3); an accommodating groove (41) which can accommodate the spoiler (51) is formed in the inner side wall of the shell (4); the spoiler (51) can be retracted into the accommodating groove (41).

6. A no-load power consumption reduction device of a hydrodynamic retarder according to claim 5, characterized in that the spoiler (51) is provided with guide strips (511), and the guide strips (511) are arranged at both ends of the spoiler (51) or in the middle of the spoiler (51).

7. A hydrodynamic retarder load-reducing energy consumption device according to claim 6, characterized in that the spoiler device (5) is provided with at least one.

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