CN216742541U - Roots type high-viscosity oil medium high-pressure retarder and automobile - Google Patents

Abstract

The utility model provides a Roots high-viscosity oil medium high-pressure retarder and an automobile, and relates to the technical field of retarders. The Roots high-viscosity oil medium high-pressure retarder comprises a working shell, a Roots transmission assembly and a flow limiting valve; a working cavity for the Roots type transmission assembly to move is arranged in the working shell, and an oil inlet and an oil outlet which are communicated with the working cavity are formed in the working shell; the working cavity is filled with high-viscosity oil working medium; the flow limiting valve is communicated with the oil outlet. The automobile comprises an automobile body and a Roots type high-viscosity oil medium high-pressure retarder; the Roots high-viscosity oil medium high-pressure retarder is arranged on the vehicle body and is connected with the automobile transmission shaft through the speed-reducing and torque-increasing gear pair. The technical effect of good use effect is achieved.

Description

Roots type high-viscosity oil medium high-pressure retarder and automobile

Technical Field

The utility model relates to the technical field of retarders, in particular to a Roots high-viscosity oil medium high-pressure retarder and an automobile.

Background

Urban road intersections are many, bus stops are dense, passenger flow is large, and buses are frequently braked; the mountain roads are steep and have many sharp bends, and medium and large trucks and buses running on the mountain road section for a long time also need to be braked frequently. Under the condition of long-time frequent work, the brake shoes are quickly worn, the service life of the brake friction plates is short, and the loss of braking force or great reduction of braking performance is caused by the heat fading of the brake, which also becomes the main cause of traffic accidents. Therefore, it is necessary to equip an auxiliary braking system.

The retarder is used as an auxiliary braking component of the vehicle, reduces the load of the braking system of the original vehicle by acting on the transmission system of the original vehicle, enables the vehicle to uniformly decelerate, improves the reliability of the braking system of the vehicle, prolongs the service life of the braking system, and can greatly reduce the use cost of the vehicle. At present, an eddy current retarder and a hydraulic retarder are available, but the eddy current retarder is large in size, heavy in machine body, large in electric energy consumption and greatly influenced by ambient temperature; the hydraulic retarder is large in size, low in reaction speed, insufficient in low-speed braking power and large in no-load loss, so that the use effect of the retarder is poor.

Therefore, it is an important technical problem to be solved by those skilled in the art to provide a roots-type high-viscosity oil medium high-pressure retarder with good use effect and an automobile.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a Roots high-viscosity oil medium high-pressure retarder and an automobile, so as to solve the technical problem that the retarder in the prior art is poor in use effect.

In a first aspect, the embodiment of the utility model provides a roots type high-viscosity oil medium high-pressure retarder which comprises a working shell, a roots type transmission assembly and a flow limiting valve, wherein the working shell is provided with a first end and a second end;

a working cavity for the Roots type transmission assembly to move is arranged in the working shell, and an oil inlet and an oil outlet which are communicated with the working cavity are formed in the working shell;

the working cavity is filled with a high-viscosity oil working medium;

the flow limiting valve is communicated with the oil outlet.

In combination with the first aspect, embodiments of the present invention provide one possible implementation manner of the first aspect, wherein the roots-type drive assembly includes a rotary shaft, and a power roots rotor and an output roots rotor capable of meshing with each other;

the power Roots rotor and the output Roots rotor are both arranged in the working cavity;

the power Roots rotor and the output Roots rotor are both provided with the rotating shaft, and the rotating shaft extends out of the working shell.

With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the rotating shaft includes a power shaft and an output shaft;

the power Roots rotor is fixedly sleeved on the power shaft, and the output Roots rotor is fixedly sleeved on the output shaft.

With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein an oil seal ring for sealing the rotating shaft is provided on the working housing.

With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a bearing for supporting the rotating shaft is disposed on the working housing.

With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the working housing includes a front housing, a middle housing, and a rear housing;

the middle shell is positioned between the front shell and the rear shell, and two ends of the middle shell are respectively connected with the front shell and the rear shell in a sealing mode.

With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a clearance control piece is arranged in the working cavity, and the clearance control piece is located between an end of the roots-type transmission assembly and the working housing;

and liquid flow channels for driving the gap control sheets are formed on the front shell and the middle shell.

With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein an acting area of the liquid flow channel on the gap control sheet is larger than an acting area of the high-viscosity oil working medium in the working cavity on the gap control sheet.

With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a heat exchanger is disposed on the rear housing.

In a second aspect, an embodiment of the utility model provides an automobile, which comprises an automobile body and the roots-type high-viscosity oil medium high-pressure retarder;

the roots type high-viscosity oil medium high-pressure retarder is arranged on the vehicle body and is connected with an automobile transmission shaft through a speed-reducing and torque-increasing gear pair.

Has the advantages that:

the embodiment of the utility model provides a Roots type high-viscosity oil medium high-pressure retarder which comprises a working shell, a Roots type transmission assembly and a flow limiting valve, wherein the Roots type transmission assembly is arranged on the working shell; a working cavity for the Roots type transmission assembly to move is arranged in the working shell, and an oil inlet and an oil outlet which are communicated with the working cavity are formed in the working shell; the working cavity is filled with high-viscosity oil working medium; the flow limiting valve is communicated with the oil outlet.

Specifically, when the vehicle needs to decelerate, the high-viscosity oil working medium in the oil tank can be transmitted into the working cavity along the oil passage, then the high-viscosity oil working medium can move in the oil passage loop along with the continuous rotation of the Roots type transmission assembly due to the pressure change in the working cavity, and large resistance is generated, so that the braking torque is generated, and the pressure in the working cavity can be adjusted by adjusting the opening degree of the flow limiting valve, so that the size adjustment of the braking torque is realized; when the vehicle does not need to slow down, can be with high viscosity oil working medium in the working chamber in the oil tank that returns, roots's formula mechanical structure flow is big, can do the operation, the reliability is high, does not provide braking force. The structure has small integral volume, low weight, quick response and strong braking force.

The embodiment of the utility model provides an automobile, which comprises an automobile body and a Roots type high-viscosity oil medium high-pressure retarder; the Roots high-viscosity oil medium high-pressure retarder is arranged on the vehicle body and is connected with the automobile transmission shaft through the speed-reducing and torque-increasing gear pair. The automobile has the advantages compared with the prior art, and the description is omitted.

Drawings

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

FIG. 1 is a schematic diagram of a Roots-type high-viscosity oil medium high-pressure retarder provided by an embodiment of the utility model;

FIG. 2 is a cross-sectional view of a working housing and components thereof in the Roots-type high-viscosity oil medium high-pressure retarder provided by the embodiment of the utility model;

FIG. 3 is a schematic diagram of a front housing of a Roots-type high-viscosity oil medium high-pressure retarder according to an embodiment of the utility model.

Icon:

100-a working housing; 101-an oil inlet; 102-an oil outlet; 103-a working cavity; 110-a front housing; 120-a middle shell; 130-a rear housing; 140-a flow channel;

200-roots type drive components; 210-power roots rotors; 220-output Roots rotor; 230-a power shaft;

310-oil seal ring; 320-a bearing;

400-gap control sheet;

500-heat exchanger.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Referring to fig. 1, 2 and 3, an embodiment of the utility model provides a roots-type high-viscosity oil medium high-pressure retarder, which comprises a working housing 100, a roots-type transmission assembly 200 and a flow limiting valve; a working cavity 103 for the Roots-type transmission assembly 200 to move is arranged in the working shell 100, and an oil inlet 101 and an oil outlet 102 communicated with the working cavity 103 are formed in the working shell 100; the working cavity 103 is filled with high-viscosity oil working medium; the flow restriction valve communicates with the oil outlet 102.

Specifically, when the vehicle needs to decelerate, the high-viscosity oil working medium in the oil tank can be transmitted into the working cavity 103 along the oil passage, then along with the continuous rotation of the roots-type transmission assembly 200, the pressure change in the working cavity 103 enables the high-viscosity oil working medium to move in the oil passage loop and generate larger resistance, so that the braking torque is generated, and the pressure in the working cavity 103 can be adjusted by adjusting the opening degree of the flow limiting valve, so that the size adjustment of the braking torque is realized; when the vehicle does not need to slow down, the high-viscosity oil working medium in the working cavity 103 can flow back to the oil tank, the Roots type mechanical structure is large in flow, can run dry, is high in reliability, and does not provide braking force. The structure has small integral volume, low weight, quick response and strong braking force.

Specifically, the high-viscosity oil working medium in the oil tank can be conveyed into the working chamber 103 or discharged from the working chamber 103 by an auxiliary pump or the like in the vehicle. When a high-viscosity oil working medium exists in the working cavity 103, braking force can be provided for the vehicle; when no high viscosity oil working medium exists in the working cavity 103, the vehicle is normally driven, and the roots type high viscosity oil medium high-pressure retarder provided by the embodiment can not provide braking force.

Among them, the high viscosity oil working medium has fluidity at minus 40 ℃ or lower, has a dynamic viscosity of 30mpa.s at 90 ℃ or higher, and can withstand a high temperature of 160 ℃, and for example, engine oils of 0W40, 5W40, and the like can be used as the high viscosity oil working medium.

In addition, when the brake is operated, the pressure in the working cavity 103 can reach 7MPa, and can reach 15-25MPa at most.

Referring to FIGS. 1, 2 and 3, in an alternative version of the present embodiment, a Roots-type drive assembly 200 includes a rotary shaft and intermeshing capable power and output Roots rotors 210 and 220; the power Roots rotor 210 and the output Roots rotor 220 are both arranged in the working cavity 103; both the power roots rotor 210 and the output roots rotor 220 are provided with a rotating shaft that extends out of the working housing 100.

Specifically, both the power roots rotor 210 and the output roots rotor 220 can be intermeshed with each other, and both the power roots rotor 210 and the output roots rotor 220 can be connected to the power system of the vehicle by the rotating shaft members.

Referring to fig. 1, 2 and 3, in an alternative to this embodiment, the rotating shaft member includes a power shaft 230 and an output shaft; the power Roots rotor 210 is fixedly sleeved on the power shaft 230, and the output Roots rotor 220 is fixedly sleeved on the output shaft.

Specifically, the power roots rotor 210 can be connected with a power system of a vehicle through the power shaft 230, so that when a high-viscosity oil working medium is filled in the working cavity 103, a braking force can be provided for the vehicle, and when the high-viscosity oil working medium is not filled in the working cavity 103, the power roots rotor 210 can normally transmit the power to the output roots rotor 220; and when the vehicle does not need to be braked, the high-viscosity oil working medium in the working cavity 103 can be discharged, so that the power Roots rotor 210 and the output Roots rotor 220 can idle, and the power output of the vehicle is not influenced and is transmitted to the wheel.

Referring to fig. 1, 2 and 3, in an alternative of the present embodiment, the working housing 100 is provided with an oil seal 310 for sealing the rotating shaft.

Specifically, an oil seal ring 310 is arranged on the working shell 100, and the rotating shaft and the working shell 100 can be sealed by the oil seal ring 310, so that oil leakage is avoided.

Referring to fig. 1, 2 and 3, in an alternative of the present embodiment, the working housing 100 is provided with a bearing 320 for supporting the rotating shaft.

Specifically, the working housing 100 is provided with a bearing 320, and the rotating shaft is supported by the bearing 320, so that the abrasion between the rotating shaft and the working housing 100 is reduced.

Referring to fig. 1, 2 and 3, in an alternative of the present embodiment, the working housing 100 includes a front housing 110, a middle housing 120 and a rear housing 130; the middle housing 120 is located between the front housing 110 and the rear housing 130, and both ends of the middle housing 120 are hermetically connected to the front housing 110 and the rear housing 130, respectively.

Specifically, the working housing 100 is configured as a front housing 110, a middle housing 120, and a rear housing 130 to facilitate working by a worker.

Referring to fig. 1, 2 and 3, in an alternative version of this embodiment, a clearance control plate 400 is disposed within the working chamber 103, the clearance control plate 400 being located between the end of the roots-type drive assembly 200 and the working housing 100; fluid flow passages 140 for driving the gap control plates 400 are opened at the front case 110 and the middle case 120.

In addition, the acting area of the fluid flow channel 140 on the clearance control plate 400 is larger than the acting area of the high viscosity oil working medium in the working chamber 103 on the clearance control plate 400.

Specifically, through the setting of clearance control piece 400, can let in fluid through flow channel 140 and pressurize clearance control piece 400 for clearance control piece 400 presses to roots's formula drive assembly 200's both ends, thereby improves the pressure of the high viscosity oil working medium in the working chamber 103, thereby improves the braking force that the roots's formula high viscosity oil medium high pressure retarder that this embodiment provided.

Referring to fig. 1, 2 and 3, in an alternative to the present embodiment, a heat exchanger 500 is provided on the rear housing 130.

Specifically, the heat exchanger 500 dissipates heat from the working housing 100, so as to prevent the working housing 100 from being overheated.

It should be noted that the power shaft 230 of the roots-type high-viscosity oil medium high-pressure retarder provided in this embodiment is connected to a transmission shaft of a transmission case by using a speed-increasing torque-reducing gear, and under the driving of the torque of the transmission shaft, the high-viscosity oil working medium generates a rotary motion in the working cavity 103, and a pressure change drives the high-viscosity oil working medium in the pipeline to flow, and under the action of the high-viscosity oil working medium, the mechanical energy of the roots-type transmission assembly 200 is converted into heat energy, so as to finally generate a vehicle braking force, thereby achieving a vehicle speed-slowing function. Different from the hydraulic coupling principle of the traditional hydraulic retarder, the roots type high-viscosity oil medium high-pressure retarder provided by the embodiment directly intervenes in the vehicle transmission torque through the hydraulic pressure of the high-viscosity oil working medium, so that the reaction speed is high.

The embodiment provides an automobile, which comprises an automobile body and a Roots type high-viscosity oil medium high-pressure retarder; the Roots high-viscosity oil medium high-pressure retarder is arranged on the vehicle body and is connected with the automobile transmission shaft through the speed-reducing and torque-increasing gear pair.

Specifically, floating oil distribution discs are adopted on the end faces of the two roots rotors, high-pressure working medium in the working cavity 103 is guided into a sealing cavity between the floating oil distribution discs and the working shell 100 from an output cavity of the working shell 100 through a channel, an acting force is generated to push the floating oil distribution discs to the end faces of the roots rotors, and the end face gap is smaller than 0.02mm, so that the working medium in the working cavity 103 is pressed, the pressure in the working cavity 103 can reach 7MPa, and the highest pressure can reach 15-25 MPa. And vacuum may be used to increase retarding torque during braking.

In addition, when the rotary engine does not need to rotate, the working medium in the working cavity 103 can be sucked to be empty, the oil inlet channel of the working cavity 103 can be closed during no-load, and then air is introduced into the oil inlet channel, so that no-load resistance is small.

In addition, the car that this embodiment provided compares with prior art and has the advantage of above-mentioned roots formula high viscosity oil medium high pressure retarder, no longer gives details here.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A Roots high-viscosity oil medium high-pressure retarder is characterized by comprising: a working housing (100), a roots-type drive assembly (200), and a flow-limiting valve;

a working cavity (103) for the Roots type transmission assembly (200) to move is arranged in the working shell (100), and an oil inlet (101) and an oil outlet (102) communicated with the working cavity (103) are formed in the working shell (100);

the working cavity (103) is filled with a high-viscosity oil working medium;

the flow limiting valve is communicated with the oil outlet (102).

2. A roots-type high-viscosity oil medium high-pressure retarder according to claim 1, characterized in that the roots-type transmission assembly (200) comprises a rotary shaft and a power roots rotor (210) and an output roots rotor (220) which can mesh with each other;

both the power roots rotor (210) and the output roots rotor (220) are disposed within the working cavity (103);

the power Roots rotor (210) and the output Roots rotor (220) are both provided with the rotating shaft which extends out of the working shell (100).

3. The roots-type high-pressure retarder for high-viscosity oil media according to claim 2, wherein the rotating shaft comprises a power shaft (230) and an output shaft;

the power Roots rotor (210) is fixedly sleeved on the power shaft (230), and the output Roots rotor (220) is fixedly sleeved on the output shaft.

4. A roots-type high viscosity oil medium high pressure retarder according to claim 2, characterized in that an oil seal ring (310) for sealing the rotating shaft is arranged on the working housing (100).

5. A roots-type high-viscosity oil medium high-pressure retarder according to claim 4, characterized in that a bearing (320) for supporting the rotating shaft is provided on the working housing (100).

6. A roots-type high-viscosity oil medium high-pressure retarder according to any one of claims 1-5, characterized in that the working housing (100) comprises a front housing (110), a middle housing (120) and a rear housing (130);

the middle shell (120) is located between the front shell (110) and the rear shell (130), and two ends of the middle shell (120) are respectively connected with the front shell (110) and the rear shell (130) in a sealing mode.

7. The roots-type high-viscosity oil medium high-pressure retarder according to claim 6, characterized in that a clearance control sheet (400) is arranged in the working cavity (103), and the clearance control sheet (400) is positioned between the end of the roots-type transmission assembly (200) and the working housing (100);

the front shell (110) and the middle shell (120) are provided with liquid flow channels (140) for driving the gap control sheets (400).

8. The roots-type high-pressure oil medium retarder as claimed in claim 7, wherein the acting area of the liquid flow channel (140) on the clearance control plate (400) is larger than the acting area of the high-viscosity oil working medium in the working cavity (103) on the clearance control plate (400).

9. The roots-type high-viscosity oil medium high-pressure retarder according to claim 8, characterized in that a heat exchanger (500) is arranged on the rear housing (130).

10. An automobile, characterized by comprising an automobile body and the Roots-type high-viscosity oil medium high-pressure retarder as claimed in any one of claims 1 to 9;

the roots type high-viscosity oil medium high-pressure retarder is arranged on the vehicle body and is connected with an automobile transmission shaft through a speed-reducing and torque-increasing gear pair.

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