CN217177226U - Parallel hydraulic retarder capable of automatically clutching - Google Patents
Parallel hydraulic retarder capable of automatically clutching Download PDFInfo
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- CN217177226U CN217177226U CN202220679554.9U CN202220679554U CN217177226U CN 217177226 U CN217177226 U CN 217177226U CN 202220679554 U CN202220679554 U CN 202220679554U CN 217177226 U CN217177226 U CN 217177226U
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- sliding sleeve
- hydraulic retarder
- output shaft
- annular piston
- parallel hydraulic
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Abstract
The utility model discloses a parallel hydraulic retarder capable of automatically clutching, which comprises a transmission output shaft and a sliding sleeve with an annular piston, wherein a piston cavity, a sliding sleeve tooth holder and a parallel hydraulic retarder driven gear are arranged on the transmission output shaft, and an additional control system is not needed to be added; the sliding sleeve with the annular piston and the sliding sleeve tooth holder are respectively provided with an internal spline and an external spline which are matched with each other, the sliding sleeve with the annular piston and the parallel hydraulic retarder driven gear are respectively provided with an internal meshing gear ring and an external meshing gear ring which are matched with each other, so that the sliding sleeve with the annular piston can slide on the sliding sleeve tooth holder, the combination and the separation of the parallel hydraulic retarder driven gear and the transmission output shaft are realized through the rotating speed of the transmission output shaft, braking is not needed when the rotating speed of the transmission output shaft is low, the parallel hydraulic retarder driven gear does not transmit the power of the output shaft in idle running, and the power loss in the process can be avoided.
Description
Technical Field
The utility model belongs to the technical field of the vehicle auxiliary brake, concretely relates to parallel hydraulic retarber that can automatic separation and reunion.
Background
The hydraulic retarder is an automobile retarder which reduces the running speed of a vehicle through a hydraulic device. The hydraulic device of the hydraulic retarder is connected with the power output shaft, and mechanical energy of the power output shaft is converted into heat energy, so that the purpose of auxiliary braking when the whole vehicle runs is achieved. The parallel type hydraulic retarder on the market at present generally has no separation structure with a power output shaft, or a separation mechanism with a control system is adopted, the parallel type hydraulic retarder can cause power loss of an engine in a non-braking mode, and the control system is added, so that the system cost is increased to a certain extent, and the system reliability is reduced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the shortcoming of the prior art, the utility model aims to provide a parallel hydraulic retarber that can automatic clutch to solve parallel hydraulic retarber and cause the problem of engine power loss when non-braking mode, need not increase extra control system simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
the utility model discloses a parallel hydraulic retarder capable of automatically clutching, which comprises a transmission output shaft and a sliding sleeve with an annular piston, wherein a piston cavity, a sliding sleeve tooth holder and a parallel hydraulic retarder driven gear are arranged on the transmission output shaft;
the sliding sleeve with the annular piston is provided with an internal spline, the sliding sleeve toothholder is provided with an external spline matched with the internal spline, and the sliding sleeve with the annular piston can slide on the sliding sleeve toothholder; the sliding sleeve with the annular piston is also provided with an inner meshing gear ring, and the driven gear of the parallel hydraulic retarder is provided with an outer meshing gear ring matched with the inner meshing gear ring.
Preferably, the piston chamber is splined to the transmission output shaft.
Preferably, the sliding sleeve tooth holder is connected with the transmission output shaft through a spline.
Preferably, a needle bearing is arranged between the driven gear of the parallel type hydraulic retarder and the output shaft of the transmission.
Preferably, the annular piston part of the sliding sleeve with the annular piston is arranged in the annular cavity of the piston cavity.
Preferably, the inner walls of the two sides of the piston cavity are sealed through O-shaped rings.
Preferably, a groove is formed in the sliding sleeve with the annular piston, a fork foot part of the shifting fork is clamped in the groove, and the shifting fork is connected with the shifting fork shaft through a pin.
Preferably, the shift rail is fixed in a shaft hole of the transmission housing.
Preferably, one end of the shifting fork shaft is provided with a return spring.
Preferably, the parallel type hydraulic retarder further comprises a transmission intermediate shaft, and the forced lubricating oil pump is arranged on the transmission intermediate shaft.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a parallel hydraulic retarder capable of automatically clutching, which comprises a transmission output shaft and a sliding sleeve with an annular piston, wherein a piston cavity, a sliding sleeve tooth holder and a parallel hydraulic retarder driven gear are arranged on the transmission output shaft, and an additional control system is not needed to be added; the sliding sleeve with the annular piston is installed on the sliding sleeve toothholder through a spline, an internal spline on the sliding sleeve with the annular piston is matched with an external spline on the sliding sleeve toothholder, an internal meshing gear ring on the sliding sleeve with the annular piston is matched with an external meshing gear ring on the driven gear of the parallel hydraulic retarder, so that the sliding sleeve with the annular piston can slide on the sliding sleeve toothholder within a certain range, the combination and the separation of the driven gear of the parallel hydraulic retarder and the output shaft of the transmission are realized through the rotating speed of the output shaft of the transmission, when the rotating speed of the output shaft of the transmission is low, braking is not needed, the driven gear of the parallel hydraulic retarder idles on the output shaft of the transmission without transmitting the power of the output shaft of the transmission, the power loss in the process can be avoided, and the oil consumption of the whole vehicle is reduced.
Furthermore, the piston cavity and the sliding sleeve tooth holder are respectively connected with the output shaft of the transmission through splines, so that the structure is simple and reliable.
Furthermore, the fork foot part of the shifting fork is clamped in a groove of the sliding sleeve with the annular piston, the shifting fork is connected with the shifting fork shaft through a pin, one end of the shifting fork shaft is provided with a return spring, the shifting fork shaft and the return spring can always provide axial spring force for the sliding sleeve with the annular piston, when the pressure of the piston end of the sliding sleeve with the annular piston does not exceed the spring force, the sliding sleeve with the annular piston is kept at a position which is not combined with the driven gear of the parallel hydraulic retarder, the driven gear of the parallel hydraulic retarder does not transmit the power of an output shaft, and the energy loss caused by the hydraulic retarder under the working condition that running braking is not needed is avoided.
Furthermore, the forced lubricating oil pump is arranged on a transmission intermediate shaft, and the input rotating speed of the forced lubricating oil pump, namely the rotating speed of the transmission intermediate shaft, can continuously convey lubricating oil into an oil channel in the center of the transmission output shaft.
Drawings
Fig. 1 is the structure diagram of the parallel hydraulic retarder of the automatic clutch of the utility model.
Wherein: 1-a transmission output shaft; 2-a piston cavity; 3-sliding sleeve toothholder; 4-a sliding sleeve with an annular piston; 5-driven gear of the parallel hydraulic retarder; 6-a shifting fork; 7-a declutch shift shaft; 8-a return spring; 9-forced lubricating oil pump.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the utility model discloses a parallel hydraulic retarber that can automatic separation and reunion, including the sliding sleeve 4 of derailleur output shaft 1 and belt annular piston, install piston chamber 2, sliding sleeve toothholder 3 and parallel hydraulic retarber driven gear 5 on the derailleur output shaft 1, need not increase extra control system. The piston cavity 2 and the sliding sleeve tooth holder 3 are respectively connected with the transmission output shaft 1 through splines, so that the structure is simple and reliable; a needle bearing is arranged between the driven gear 5 of the parallel hydraulic retarder and the output shaft 1 of the transmission; the sliding sleeve 4 with the annular piston is arranged on the sliding sleeve tooth holder 3 through spline connection, the annular piston part of the sliding sleeve 4 with the annular piston is arranged in the annular cavity of the piston cavity 2, and the inner walls of the two sides of the piston cavity 2 are sealed through two O-shaped rings.
A groove is formed in a sliding sleeve 4 with an annular piston, a fork foot part of a shifting fork 6 is clamped in the groove, the shifting fork 6 is connected with a shifting fork shaft 7 through a pin, the shifting fork shaft 7 is fixed in a shaft hole of a transmission shell, and one end of the shifting fork shaft 7 is provided with a return spring 8; the shifting fork 6, the shifting fork shaft 7 and the return spring 8 can always provide an axial spring force for the sliding sleeve 4 with the annular piston, when the pressure of the piston end of the sliding sleeve 4 with the annular piston does not exceed the spring force, the sliding sleeve 4 with the annular piston is kept at a position where the sliding sleeve is not combined with the driven gear 5 of the parallel hydraulic retarder, the driven gear 5 of the parallel hydraulic retarder does not transmit the power of an output shaft, and the energy loss caused by the hydraulic retarder under the working condition that running braking is not needed is avoided.
The sliding sleeve 4 with the annular piston is provided with an internal spline which is matched with an external spline arranged on the sliding sleeve tooth holder 3. Be equipped with the internal gearing ring gear on the sliding sleeve 4 of taking annular piston, with the external gearing ring gear that is equipped with on the parallel hydraulic retarber driven gear 5 mutually support for sliding sleeve 4 of taking annular piston can slide with the certain limit on sliding sleeve toothholder 3, thereby combination and separation through transmission output shaft 1's rotational speed automatically regulated parallel hydraulic retarber driven gear 5 and transmission output shaft 1.
When the output shaft 1 of the speed changer rotates, due to different connection modes, the piston cavity 2, the sliding sleeve tooth holder 3, the sliding sleeve 4 with the annular piston and the output shaft 1 of the speed changer have the same angular speed; when the sliding sleeve 4 with the annular piston is close to the left side, the driven gear 5 of the parallel hydraulic retarder idles on the output shaft 1 of the transmission, power is not transmitted, power loss in the process can be avoided, and oil consumption of the whole vehicle is reduced. After the sliding sleeve 4 with the annular piston moves towards the right side, the combination of the internal meshing gear ring of the sliding sleeve 4 with the annular piston and the external meshing gear ring of the driven gear 5 of the parallel hydraulic retarder is completed, the driven gear 5 of the parallel hydraulic retarder has the same angular speed with the output shaft 1 of the speed changer, and power begins to be transmitted;
the forced lubricating oil pump 9 is arranged on a transmission intermediate shaft, the input rotating speed of the forced lubricating oil pump is the rotating speed of the transmission intermediate shaft, lubricating oil can be continuously conveyed into an oil duct in the center of the transmission output shaft 1, and due to the rotation of the transmission output shaft 1, the lubricating oil can be filled in a gap between the piston cavity 2 and the sliding sleeve 4 with the annular piston through the oil duct; the centrifugal force of the lubricating oil generates pressure in a gap between the piston cavity 2 and the sliding sleeve 4 with the annular piston, and a rightward axial force is applied to the sliding sleeve 4 with the annular piston; when the output shaft 1 of the speed changer exceeds a certain rotating speed, the pressure applied to the sliding sleeve 4 with the annular piston exceeds the spring force of the return spring 8, so that the sliding sleeve 4 with the annular piston moves rightwards.
The utility model discloses a concrete theory of operation as follows:
firstly, when the rotating speed of the transmission output shaft 1 is lower than the rotating speed required to retard, the centrifugal force of lubricating oil in the oil duct is low, the lubricating oil in the gap between the piston cavity 2 and the sliding sleeve 4 with the annular piston gives the spring force of the sliding sleeve 4 with the annular piston smaller than the return spring 8, braking is not needed, the driven gear 5 of the parallel hydraulic retarder idles on the transmission output shaft 1 at the moment, the power of the transmission output shaft 1 is not transmitted, and the energy consumption loss of the parallel hydraulic retarder at the moment is avoided.
Secondly, when the rotating speed of the output shaft 1 of the transmission reaches the rotating speed when the service braking is required, the centrifugal force of the lubricating oil in the oil duct rises, the lubricating oil in the gap between the piston cavity 2 and the sliding sleeve 4 with the annular piston gives the spring force of the sliding sleeve 4 with the annular piston larger than the return spring 8, and the sliding sleeve 4 with the annular piston is pushed to move to the right at the moment, so that the inner meshing gear ring of the sliding sleeve 4 with the annular piston is combined with the outer meshing gear ring of the driven gear 5 of the parallel hydraulic retarder, at the moment, the driven gear 5 of the parallel hydraulic retarder is the same as the angular speed of the output shaft 1 of the transmission, the driven gear 5 of the parallel hydraulic retarder starts to transmit power, the parallel hydraulic retarder starts to work, and the output shaft 1 of the transmission is braked.
The rotating speed threshold of the separation and combination point of the third and the parallel hydraulic retarders can be changed by adjusting the pressure of the piston cavity 2 and the spring force of the return spring 8 under the centrifugal action of the lubricating oil.
The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (10)
1. A parallel type hydraulic retarder capable of automatically clutching is characterized by comprising a transmission output shaft (1) and a sliding sleeve (4) with an annular piston, wherein a piston cavity (2), a sliding sleeve tooth holder (3) and a parallel type hydraulic retarder driven gear (5) are mounted on the transmission output shaft (1);
the sliding sleeve (4) with the annular piston is provided with an internal spline, the sliding sleeve toothholder (3) is provided with an external spline matched with the internal spline, and the sliding sleeve (4) with the annular piston can slide on the sliding sleeve toothholder (3); the sliding sleeve (4) with the annular piston is also provided with an inner meshing gear ring, and the driven gear (5) of the parallel hydraulic retarder is provided with an outer meshing gear ring matched with the inner meshing gear ring.
2. A parallel hydraulic retarder capable of clutching automatically according to claim 1, characterised in that the piston chamber (2) is splined to the variator output shaft (1).
3. A parallel hydraulic retarder capable of clutching automatically according to claim 1, characterised in that the sliding sleeve toothholder (3) is splined to the variator output shaft (1).
4. A parallel hydraulic retarder capable of automatically clutching according to claim 1, characterized in that a needle bearing is arranged between the driven gear (5) of the parallel hydraulic retarder and the transmission output shaft (1).
5. A parallel-type hydraulic retarder capable of automatically clutching according to claim 1, characterized in that the annular piston portion of the sliding sleeve (4) with annular piston is mounted in the annular cavity of the piston chamber (2).
6. A parallel hydraulic retarder capable of automatically clutching according to claim 5, characterized in that the inner walls of both sides of the piston cavity (2) are sealed by O-rings.
7. A parallel hydraulic retarder capable of automatically clutching according to claim 1, characterized in that the sliding sleeve (4) with the annular piston is provided with a groove, the prong part of the shift fork (6) is clamped in the groove, and the shift fork (6) is connected with the shift fork shaft (7) through a pin.
8. A parallel hydraulic retarder according to claim 7, characterised in that the fork shaft (7) is secured in a shaft hole in the transmission housing.
9. A parallel hydraulic retarder according to claim 8 characterised in that one end of the fork shaft (7) is provided with a return spring (8).
10. A parallel hydraulic retarder capable of clutching automatically according to claim 1, charac teri z ed in that it further comprises a transmission countershaft on which a force-feed oil pump (9) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220679554.9U CN217177226U (en) | 2022-03-25 | 2022-03-25 | Parallel hydraulic retarder capable of automatically clutching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220679554.9U CN217177226U (en) | 2022-03-25 | 2022-03-25 | Parallel hydraulic retarder capable of automatically clutching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217177226U true CN217177226U (en) | 2022-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220679554.9U Active CN217177226U (en) | 2022-03-25 | 2022-03-25 | Parallel hydraulic retarder capable of automatically clutching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217177226U (en) |
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2022
- 2022-03-25 CN CN202220679554.9U patent/CN217177226U/en active Active
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