CN219139661U

CN219139661U - Retarder

Info

Publication number: CN219139661U
Application number: CN202223177367.XU
Authority: CN
Inventors: 郭林; 顾勇亭; 王东; 朱琦; 王晨凯; 宋凯; 关相胜; 方杰
Original assignee: Zhejiang Wanliyang Transmission Co Ltd
Current assignee: Zhejiang Wanliyang Transmission Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-06-06
Anticipated expiration: 2032-11-29

Abstract

The utility model relates to the technical field of automobile retarders, in particular to a retarder. The device comprises a main body part and a transmission shaft, wherein a rotor and a stator are arranged in the main body part, the rotor and the stator form a working cavity, and the transmission shaft is fixedly connected with the rotor; the device also comprises an oil storage cavity, wherein a secondary oil cavity is arranged between the oil storage cavity and the working cavity, and the oil storage cavity, the secondary oil cavity and the working cavity are communicated; the end part of the transmission shaft is provided with an oil pump, and the pump cavity is communicated with the auxiliary oil cavity and the oil storage cavity. Aiming at the technical problem that the brake response time of the traditional retarder is slower, the structure of the retarder is improved, the brake response time of the retarder can be effectively shortened on the basis of not increasing the space size of the retarder, and the brake effect is improved.

Description

Retarder

Technical Field

The utility model relates to the technical field of automobile retarders, in particular to a retarder.

Background

The hydraulic retarder is a device for reducing the running speed of a vehicle through a hydraulic device, generally comprises a retarder body, an operating device, an electronic control unit and the like, the braking response time of the retarder is an important performance parameter of the retarder, the traditional retarder needs to shorten the response time, and the traditional retarder is generally optimized and lifted in the aspects of a controller, a control system and the like, but the optimization mode is limited, and therefore the optimization effect is limited on the premise that the retarder structure is unchanged.

Disclosure of Invention

Technical problem to be solved by the utility model

Aiming at the technical problem that the brake response time of the traditional retarder is slower, the utility model provides the retarder, which improves the structure of the retarder, and can effectively shorten the brake response time of the retarder and improve the brake effect on the basis of not increasing the space size of the retarder.

Technical proposal

In order to solve the problems, the technical scheme provided by the utility model is as follows:

the retarder comprises a main body part and a transmission shaft, wherein a rotor and a stator are arranged in the main body part, the rotor and the stator form a working cavity, and the transmission shaft is fixedly connected with the rotor; the device also comprises an oil storage cavity, wherein a secondary oil cavity is arranged between the oil storage cavity and the working cavity, and the oil storage cavity, the secondary oil cavity and the working cavity are communicated; the end part of the transmission shaft is provided with an oil pump, and the pump cavity is communicated with the auxiliary oil cavity and the oil storage cavity.

Optionally, the oil pump includes pump upper cover and pump inferior valve, pump upper cover and pump inferior valve all set firmly in the transmission shaft tip, pump upper cover and pump inferior valve constitute the pump body cavity, be provided with the pump body in the pump body cavity.

Optionally, an oil inlet is formed in the pump upper cover, an oil outlet is formed in the pump lower shell, the oil inlet is communicated with the oil storage cavity, and the oil outlet is communicated with the auxiliary oil cavity.

Optionally, the auxiliary oil cavity stores oil.

Optionally, the pump body is a plastic pump.

Optionally, the volume of the oil storage cavity is larger than the sum of the volumes of the working cavity and the auxiliary oil cavity.

Optionally, a heat exchanger is further included, and the heat exchanger is disposed on the main body portion at a position close to the oil storage cavity.

Optionally, oil is arranged in the oil storage cavity.

Optionally, the device further comprises a proportional valve, wherein the proportional valve is connected with the oil storage cavity.

Optionally, a pressure sensor is arranged in the oil storage cavity, and the pressure sensor is electrically connected with the proportional valve.

Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

aiming at the technical problem that the brake response time of the traditional retarder is slower, the structure of the retarder is improved, the brake response time of the retarder can be effectively shortened on the basis of not increasing the space size of the retarder, and the brake effect is improved.

Drawings

Fig. 1 is a schematic structural diagram of a retarder according to an embodiment of the present utility model.

Fig. 2 is a schematic partial structure of a retarder according to an embodiment of the present utility model.

Fig. 3 is a schematic structural view of a pump top cover according to an embodiment of the present utility model.

Fig. 4 is a schematic structural view of a pump lower casing according to an embodiment of the present utility model.

Detailed Description

For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples.

The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings. The first, second, etc. words are provided for convenience in describing the technical scheme of the present utility model, and have no specific limitation, and are all generic terms, and do not constitute limitation to the technical scheme of the present utility model. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. The technical schemes in the same embodiment and the technical schemes in different embodiments can be arranged and combined to form a new technical scheme without contradiction or conflict, which is within the scope of the utility model.

Example 1

1-4, a retarder comprises a main body part 100 and a transmission shaft, wherein a rotor 101 and a stator 102 are arranged in the main body part 100, the rotor 101 and the stator 102 form a working cavity 103, and the transmission shaft is fixedly connected with the rotor 101; the hydraulic oil storage device further comprises an oil storage cavity 104, wherein a secondary oil cavity 105 is arranged between the oil storage cavity 104 and the working cavity 103, and the oil storage cavity 104, the secondary oil cavity 105 and the working cavity 103 are communicated; the end of the transmission shaft is provided with an oil pump 200, and the pump cavity is communicated with the auxiliary oil cavity 105 and the oil storage cavity 104.

Compared with other commercial vehicle retarders, the retarder provided by the embodiment has a compact structure, and can effectively shorten the braking response time of the retarder and improve the braking effect on the basis of not increasing the space size of the retarder.

When the retarder provided by the embodiment works, compressed gas from the whole vehicle enters the oil storage cavity 104, so that oil enters the working cavity 103 formed by the stator and the rotor 101, the rotor 101 rotates the oil in an accelerating way on the stator 102, and the stator 102 reacts with the rotor 101 after changing the speed direction of the oil to form braking torque.

On the basis of the above, the embodiment is further improved, and a small amount of oil can be pumped from the oil storage cavity 104 to enter the auxiliary oil cavity 105 in the non-working state of the retarder, and the auxiliary oil cavity 105 is communicated with the working cavity 103 of the stator and rotor 101. After the retarder receives the working instruction, a large amount of oil enters the working cavity 103 from the oil inlet channel, and after the oil with the specified flow is filled, the required braking torque is achieved. The amount of oil stored in the sub-oil chamber 105 at an earlier stage can shorten the time for charging the prescribed flow rate of oil to the working chamber 103, thereby shortening the brake response time of the retarder.

In the above-described process, the pumping of the oil from the oil reservoir chamber 104 to the sub-oil chamber 105 is performed by means of the oil pump 200, and it is conceivable that the oil pump 200 is operated by means of a drive shaft as a power source, and thus the oil pump 200 may be a vane-type or gear-type oil pump 200. Even if the retarder does not work, since the oil pump 200 is connected with the transmission shaft, the oil pump 200 can pump the oil in the oil storage cavity 104 into the auxiliary oil cavity 105, so that a certain amount of oil is always pre-stored in the auxiliary oil cavity 105. It is conceivable that the amount by which the oil pump 200 can pump into the sub-oil chamber 105 is determined according to the level of the oil in the oil reservoir chamber 104, and when the oil pump pumps into the sub-oil chamber 105, the level of the oil drops, and the oil pump 200 cannot continue pumping.

As an alternative embodiment, the oil pump 200 includes a pump upper cover 201 and a pump lower casing 202, where the pump upper cover 201 and the pump lower casing 202 are both fixedly disposed at the end of the transmission shaft, the pump upper cover 201 and the pump lower casing 202 form a pump cavity, and a pump body 203 is disposed in the pump cavity.

In this embodiment, the upper pump cover 201 and the lower pump casing 202 form an envelope structure to accommodate the pump body 203, form a closed cavity to satisfy pumping of oil, and protect the pump body 203 to a certain extent.

As an alternative embodiment, the upper pump cover 201 is provided with an oil inlet 204, the lower pump casing 202 is provided with an oil outlet 205, the oil inlet 204 is communicated with the oil storage cavity 104, and the oil outlet 205 is communicated with the auxiliary oil cavity 105.

As an alternative embodiment, the auxiliary oil chamber 105 stores oil.

In this embodiment, by storing a certain amount of oil in the auxiliary oil chamber 105 in advance, the time for charging the oil at a specified flow rate into the working chamber 103 can be shortened, thereby shortening the brake response time of the retarder.

As an alternative embodiment, the pump body 203 is a plastic pump.

In this embodiment, the pump body 203 is preferably a plastic pump, and compared with the conventional retarder, the retarder of this embodiment does not change the size of the retarder structure greatly, so the volume of the auxiliary oil chamber 105 is not too large, and thus the requirement for oil flow is not too large.

As an alternative embodiment, the volume of the oil storage chamber 104 is larger than the sum of the volumes of the working chamber 103 and the auxiliary oil chamber 105.

In the retarder of the present embodiment, the volume of the oil storage chamber 104 is necessarily larger than the sum of the volumes of the working chamber 103 and the auxiliary oil chamber 105, so as to ensure that the retarder has sufficient oil for working.

As an alternative embodiment, a heat exchanger is further included, and the heat exchanger is disposed on the main body 100 near the oil storage chamber 104.

In this embodiment, through the setting of heat exchanger, carry out fluid heat dissipation through the mode of heat exchange, guarantee that fluid temperature control is in suitable range to guarantee to play better braking effect.

As an alternative embodiment, the oil storage chamber 104 is provided with oil.

The oil in the oil storage cavity 104 is used for storing oil, and the oil storage capacity is generally more than that of the working cavity 103 and the auxiliary oil cavity 105 so as to meet the working requirement of the retarder.

As an alternative embodiment, a proportional valve is also included, which is connected to the oil reservoir 104.

Compressed gas enters the retarder from the proportional valve, and it is conceivable that the proportional valve can be controlled to adjust different opening modes to correspond to different gears of the retarder, different gears correspond to different air inflow, and the air inflow corresponds to the amount of oil in the working chamber 103 in a working state, so that braking effects of different gears of the retarder are achieved.

As an alternative embodiment, a pressure sensor is disposed in the oil storage chamber 104, and the pressure sensor is electrically connected to the proportional valve. In this embodiment, through being equipped with pressure sensor in the retarber to monitor gas pressure, and then can calculate gas flow, thereby adjust the braking effect of retarber better.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims

1. The retarder is characterized by comprising a main body part and a transmission shaft, wherein a rotor and a stator are arranged in the main body part, the rotor and the stator form a working cavity, and the transmission shaft is fixedly connected with the rotor; the device also comprises an oil storage cavity, wherein a secondary oil cavity is arranged between the oil storage cavity and the working cavity, and the oil storage cavity, the secondary oil cavity and the working cavity are communicated; the end part of the transmission shaft is provided with an oil pump; the oil pump comprises an upper pump cover and a lower pump shell, wherein the upper pump cover and the lower pump shell are fixedly arranged at the end part of the transmission shaft, a pump cavity is formed by the upper pump cover and the lower pump shell, the pump cavity is communicated with the auxiliary oil cavity and the oil storage cavity, and a pump body is arranged in the pump cavity.

2. The retarder of claim 1, wherein the pump upper cover is provided with an oil inlet, the pump lower housing is provided with an oil outlet, the oil inlet is communicated with the oil storage cavity, and the oil outlet is communicated with the auxiliary oil cavity.

3. A retarder according to claim 1, wherein the secondary oil chamber is stored with oil.

4. A retarder according to claim 1, wherein the pump body is a plastic pump.

5. A retarder according to claim 1, wherein the reservoir volume is larger than the sum of the working and secondary chamber volumes.

6. A retarder according to claim 1, further comprising a heat exchanger arranged on the body part close to the oil reservoir.

7. A retarder according to claim 1, wherein oil is provided in the oil reservoir.

8. A retarder according to claim 1, further comprising a proportional valve, said proportional valve being connected to the reservoir.

9. A retarder according to claim 8, wherein a pressure sensor is arranged in the oil reservoir, the pressure sensor being electrically connected to the proportional valve.