CN211231345U - Hydraulically controlled clutch and transmission - Google Patents
Hydraulically controlled clutch and transmission Download PDFInfo
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- CN211231345U CN211231345U CN201921827318.1U CN201921827318U CN211231345U CN 211231345 U CN211231345 U CN 211231345U CN 201921827318 U CN201921827318 U CN 201921827318U CN 211231345 U CN211231345 U CN 211231345U
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Abstract
The utility model provides a clutch and a speed change gear controlled by hydraulic pressure, the clutch comprises a brake drum and a brake assembly, the brake assembly is arranged in the brake drum, and the brake assembly comprises a brake base disc, a brake cylinder, a hydraulic pipeline, a brake shoe baffle, a support pin and a return spring; four brake shoes are arranged and are respectively pivoted with the supporting pins along the edge of the brake substrate; the brake shoe baffle is fixed on the brake base plate and is contacted with the inner side surface of the brake shoe so as to limit the brake shoe; the separation/engagement between the brake shoe and the brake drum is realized by the separation/contact of the outer side surface of the brake shoe and the inner side surface of the brake drum; each brake cylinder is provided with two pistons, the end parts of the pistons are abutted against the end parts of the brake shoes far away from the end parts of the support pins, the pistons are driven to move through hydraulic pressure in the hydraulic pipelines, and the pistons push the brake shoes to expand outwards to realize the separation/connection between the brake assembly and the brake drum. This technical scheme can improve the transmission stability of clutch.
Description
Technical Field
The present invention relates to a clutch and a transmission, and more particularly to a hydraulically controlled clutch and a transmission.
Background
The speed variator is a device for changing the running speed of car and is composed of many gears with different diameters. The transmission is mainly used for converting the torque and the rotating speed of the crankshaft of the engine so as to meet the requirements of different requirements of traction force of driving wheels and vehicle speed of an automobile on different driving conditions of starting, accelerating and driving, overcoming various road obstacles and the like. Automatic transmissions currently used in automobiles include AT, CVT, and dual clutch types. Each automatic transmission has its advantages and disadvantages. Such as: (1) the AT transmission has mature technology, good smoothness and large bearing torque; however, the AT transmission has high manufacturing cost due to the complex structure and high production difficulty. Furthermore, since the AT transmission includes a torque converter assembly, the power transmission efficiency is somewhat low; (2) the CVT has better smoothness, has the defects of small bearing torque and limited service life of a power transmission belt, and is generally only suitable for low-displacement automobiles; (3) double-clutch transmission efficiency is higher, but from the in-service use effect, shifts and pause to frustrate and feel strong, and the driving experience is not good.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: a hydraulically controlled clutch and a transmission are provided to improve the transmission stability of the clutch and the transmission efficiency of the transmission.
In order to solve the technical problem, the utility model discloses a technical scheme be: a hydraulically controlled clutch, said clutch comprising,
the brake assembly is placed in the brake drum and comprises a brake base disc, a brake cylinder, a hydraulic pipeline, brake shoes, a brake shoe baffle, a support pin and a return spring;
the four brake shoes are respectively pivoted with the support pins along the edge of the brake substrate; the brake shoe baffle is fixed on the brake base plate and is in contact with the inner side surface of the brake shoe so as to limit the brake shoe; the separation/engagement between the brake shoe and the brake drum is achieved by the separation/contact of the brake shoe outer side surface with the brake drum inner side surface.
Two brake shoes are in a group, and one end of each group of brake shoes, which is far away from the support pin, is connected through a return spring;
the brake assembly is characterized in that the number of the brake cylinders is two, the brake cylinders are connected with a hydraulic pipeline, each brake cylinder is provided with two pistons, the end parts of the pistons are abutted to the end part of one end, far away from the supporting pin, of each brake shoe, and the pistons push the brake shoes to expand outwards to realize separation/connection between the brake assembly and the brake drum by driving the pistons to move through hydraulic pressure in the hydraulic pipeline.
A hydraulic control speed change device comprises a shell, an input shaft, an output shaft, an intermediate shaft, a hydraulic transmission conversion device, an external hydraulic pipeline, an electric control hydraulic control unit and the clutch, wherein the input shaft, the output shaft, the intermediate shaft, the hydraulic transmission conversion device, the external hydraulic pipeline, the electric control hydraulic control unit and the clutch are arranged in the shell;
the input shaft is sleeved with a plurality of clutches and a plurality of gears corresponding to the clutches, the gears are fixedly connected with brake drums of the clutches, and the input shaft is fixedly connected with brake components of the clutches;
the output shaft is sleeved with a plurality of clutches and a plurality of gears corresponding to the clutches, the gears are fixedly connected with brake drums of the clutches, and the output shaft is fixedly connected with brake components of the clutches;
a plurality of gears are fixed on the intermediate shaft and are respectively meshed with the gears on the input shaft and the output shaft to realize the transmission between the input shaft and the output shaft;
the clutch is characterized in that a plurality of internal hydraulic pipelines are arranged in the shaft bodies of the input shaft and the output shaft, each internal hydraulic pipeline is provided with two openings on the surface of the shaft, one opening is connected with a hydraulic pipeline on the clutch, and the other opening is connected to an electric control hydraulic control unit through a hydraulic transmission conversion device and an external hydraulic pipeline so as to control the separation/connection of each clutch.
Furthermore, the hydraulic transmission conversion device is in a hollow round tube shape, a plurality of annular grooves are formed in the inner side of the hydraulic transmission conversion device, and a round hole is formed in the bottom of each groove and penetrates through the outer surface of the hydraulic transmission conversion device in the radial direction; the groove is butted with the shaft tail end openings of the input shaft and the output shaft; the outer side of the round hole is in butt joint with the electric control hydraulic control unit through a hydraulic pipeline.
Further, bearings are sleeved at the ends of the input shaft, the output shaft and the intermediate shaft and fixed on the shell.
The beneficial effects of the utility model reside in that:
in a first aspect: the utility model provides a clutch of hydraulic control, the clutch includes brake drum and brake assembly, the brake assembly adopts two brake wheel cylinders and four brake shoes, there are two pistons on each brake wheel cylinder; the brake shoe baffle is fixed on the brake base plate and is contacted with the inner side surface of the brake shoe so as to limit the brake shoe; the separation/connection between the brake shoe and the brake drum is realized by the separation/contact of the outer side surface of the brake shoe and the inner side surface of the brake drum, and the stable and efficient power connection and separation of the clutch are ensured.
In a second aspect: the utility model provides a hydraulic control speed change gear, each gear on the input shaft and the output shaft is provided with an independent clutch, so as to realize the power connection and separation of the gear and the shaft body; the hydraulic control of the clutch is transmitted through internal hydraulic pipelines of the input shaft and the output shaft; the external hydraulic pipeline is connected with the internal hydraulic pipeline of the shaft body through the hydraulic transmission conversion device, so that the hydraulic power of the electric control hydraulic control unit is transmitted to the on-shaft clutch; the hydraulic control speed change device has high gear shift speed and can realize multi-gear-span gear shift; the transmission efficiency is high because no obvious friction loss exists in the transmission process; meanwhile, the hydraulic control speed change device with the structure can bear higher torque and higher power.
Drawings
The specific structure of the present invention will be described in detail below with reference to the accompanying drawings.
FIG. 1 is a block diagram of a clutch according to an embodiment of the present invention;
FIG. 2 is a block diagram of a transmission according to an embodiment of the present invention;
fig. 3 is a structural view of an input shaft and an output shaft of the transmission according to an embodiment of the present invention;
fig. 4 is a structural view of an intermediate shaft of the transmission according to an embodiment of the present invention;
fig. 5 is a shaft body structure diagram of an input shaft and an output shaft of the transmission according to an embodiment of the present invention;
FIG. 6 is a diagram of the housing and auxiliary components of the transmission in accordance with one embodiment of the present invention;
fig. 7 is a structural view of a hydraulic transmission switching device of a transmission according to an embodiment of the present invention;
fig. 8 is a sectional view showing a hydraulic transmission switching device of a transmission according to an embodiment of the present invention;
wherein, 10-clutch, 11-brake base plate, 12-brake cylinder, 13-piston, 14-brake shoe, 15-brake shoe baffle, 16-supporting pin, 17-return spring; 18-brake drum, 19-hydraulic line; 20-input shaft, 21-gear, 22-shaft end opening, 23-clutch end opening, 24-internal hydraulic line; 30-countershaft, 31-gear; 40-an output shaft; 50-hydraulic transmission conversion device, 51-groove and 52-round hole; 60-external hydraulic lines; 70-electric control hydraulic control unit, 80-shell and 81-bearing.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.
Referring to fig. 1 and 2, an embodiment of the present invention is: a hydraulically controlled clutch, said clutch 10 comprising,
the brake assembly comprises a brake drum 18 and a brake assembly matched with the shape and size of the brake drum 18, wherein the brake assembly is placed inside the brake drum 18 and comprises a brake base plate 11, a brake cylinder 12, a hydraulic pipeline 19, brake shoes 14, a brake shoe baffle plate 15, a support pin 16 and a return spring 17;
four brake shoes 14 are arranged, and the brake shoes 14 are respectively pivoted with the supporting pins 16 along the edge of the brake base plate 11; the brake shoe baffle 15 is fixed on the brake base plate 11 and is in contact with the inner side surface of the brake shoe 14 so as to limit the brake shoe 14; the separation/engagement between the brake shoe 14 and the brake drum 18 is achieved by the separation/contact of the outer side face of the brake shoe 14 with the inner side face of the brake drum 18.
The two brake shoes 14 are in a group, and one end of each group of brake shoes 14 far away from the support pin 16 is connected through a return spring 17;
the brake cylinders 12 are provided in two, the brake cylinders 12 are connected with a hydraulic pipeline 19, each brake cylinder 12 is provided with two pistons 13, the ends of the pistons 13 are abutted against the ends of the brake shoes 14 far away from the end of the supporting pin 16, the pistons 13 are driven by hydraulic pressure in the hydraulic pipeline 19 to move, and the pistons 13 push the brake shoes 14 to expand outwards to realize the separation/engagement between the brake assembly and the brake drum 18.
In the clutch for hydraulic control provided by this embodiment, the clutch 10 includes a brake drum 18 and a brake assembly, the brake assembly employs two brake cylinders 12 and four brake shoes 14, and each brake cylinder 12 is provided with two pistons 13; the brake shoe baffle 15 is fixed on the brake base plate 11 and is contacted with the inner side surface of the brake shoe 14 so as to limit the brake shoe 14; the separation/engagement between the brake shoe 14 and the brake drum 18 is realized by the separation/contact of the outer side surface of the brake shoe 14 and the inner side surface of the brake drum 18, and the stable and efficient dynamic engagement and separation of the clutch 10 are ensured.
As shown in fig. 2, another embodiment of the present invention is: a hydraulic control speed change device comprises a shell 80, an input shaft 20, an output shaft 40, an intermediate shaft 30, a hydraulic transmission conversion device 50, an external hydraulic pipeline 60, an electronic control hydraulic control unit 70 and a clutch 10 which are arranged in the shell 80;
the input shaft 20 is sleeved with a plurality of clutches 10 and a plurality of gears 21 with different diameters corresponding to the clutches 10, the gears 21 are fixedly connected with the brake drum 18 of the clutches 10, and the input shaft 20 is fixedly connected with the brake assembly of the clutches 10;
the output shaft 40 is sleeved with a plurality of clutches 10 and a plurality of gears 21 with different diameters corresponding to the clutches 10, the gears 21 are fixedly connected with the brake drum 18 of the clutches 10, and the output shaft 40 is fixedly connected with the brake assembly of the clutches 10;
as shown in fig. 3, the input shaft 20 of the present embodiment is provided with three clutches 10 and three corresponding gears 21, and the corresponding output shaft 40 is provided with three clutches 10 and three corresponding gears 21;
a plurality of gears 31 are fixed on the intermediate shaft 30 and are respectively meshed with the gears 21 on the input shaft 20 and the output shaft 40 to realize the transmission between the input shaft 20 and the output shaft 40;
as shown in fig. 4, in the present embodiment, the intermediate shaft 30 is a solid shaft, on which three gears 31 of different diameters are mounted, and the gear 31 is fixed to the intermediate shaft 30. The intermediate shaft 30 is a link for power transmission between the input shaft 20 and the output shaft 40, and the intermediate shaft 30 realizes multi-gear control of the transmission.
As shown in fig. 5, a plurality of internal hydraulic lines 24 are arranged in the shaft body of the input shaft 20 and the output shaft 40, each internal hydraulic line 24 has two openings on the shaft surface, and one end of each internal hydraulic line 24 is open, namely, a clutch end opening 23 is connected with a hydraulic line 19 on the clutch 10; the other end opening, i.e., the shaft end opening 22, is connected to an electronically controlled hydraulic control unit 70 through a hydraulic transmission switching device 50 and an external hydraulic line 60 to control the disengagement/engagement of each clutch 10.
The electro-hydraulic control unit 70 may calculate an optimal gear ratio of the transmission in real time according to various real-time parameters (such as engine speed, wheel speed, accelerator opening, etc.) during the driving process of the vehicle, and determine a corresponding gear according to the optimal gear ratio. The engagement and the disengagement of each clutch 10 on the input shaft 20/the output shaft 40 are realized by controlling the hydraulic pressure of each hydraulic pipeline, and the gear shift is realized according to the requirement. At the same time, one clutch 10 is engaged on each of the input shaft 20 and the output shaft 40. Because the diameters of the three gears 21 on the input shaft 20 are different, the input shaft 20 and the intermediate shaft 30 have three rotation speed ratios controlled by the corresponding clutch 10 on the input shaft 20. Similarly, the intermediate shaft 30 and the output shaft 40 have three speed ratios, and therefore the automatic transmission shown in fig. 2 can achieve 3 × 3=9 speed ratios (i.e., 9 gears).
The hydraulic control speed change device has the working mode that: when the electronic control hydraulic unit 70 increases the hydraulic pressure to a certain hydraulic pipeline in the shaft, the hydraulic pressure is transmitted to the hydraulic pipeline 19 on the brake base disc 11 through the opening of the hydraulic pipeline on the surface of the shaft and finally transmitted to the brake cylinder 12, so that the two pistons 13 are driven to move outwards, and the brake shoes 14 are driven to expand. The brake shoe 14 applies pressure to the brake drum 18, and the brake drum 18 is hard connected with the brake assembly due to friction force, so that the gear 21 and the shaft body rotate synchronously; when the electronic control unit 70 reduces the hydraulic pressure of a hydraulic pipeline in a certain shaft body, the brake shoe 14 is separated from the brake drum 18 due to the tension of the return spring 17, the gear 21 is disconnected from the shaft body, and the gear 21 and the shaft rotate independently.
The hydraulic transmission path and the working mode are as follows: the electrically controlled hydraulic control unit 70 pumps fluid to fill the groove 51 through the external hydraulic line 60, the fluid in the groove 51 enters the internal hydraulic line 24 of the shaft through the shaft end opening 22, the fluid enters the hydraulic line 19 in the clutch 10 through the other side opening of the internal hydraulic line 24 of the shaft, namely the clutch end opening 23, and enters the brake cylinder 12, the pistons 13 on the two sides are driven to slide outwards, the pistons 13 push the brake shoes 14 to press the brake drum 18, the clutch 10 is closed, and the shaft body and the gear 21 rotate synchronously.
Specifically, as shown in fig. 6, bearings 81 are fitted around the ends of the input shaft 20, the output shaft 40, and the intermediate shaft 30, and the bearings 81 are fixed to the housing 80.
In the hydraulically controlled transmission provided by the embodiment, an independent clutch 10 is arranged on each gear 21 on the input shaft 20 and the output shaft 40 to realize the power engagement and disengagement of the gear 21 and the shaft body; hydraulic control of the clutch 10 is transmitted through the internal hydraulic line 24 of the input shaft 20 and the output shaft 40; the external hydraulic pipeline 60 is connected with the internal hydraulic pipeline 24 through the hydraulic transmission conversion device 50, so that the hydraulic power of the electric control hydraulic control unit 70 is transmitted to the on-shaft clutch 10; the hydraulic control speed change device has high gear shift speed and can realize multi-gear-span gear shift; the transmission efficiency is high because no obvious friction loss exists in the transmission process; meanwhile, the hydraulic control speed change device with the structure can bear higher torque and higher power.
The first … … and the second … … are only used for name differentiation and do not represent how different the importance and position of the two are.
Here, the upper, lower, left, right, front, and rear represent only relative positions thereof and do not represent absolute positions thereof.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (4)
1. A hydraulically controlled clutch, characterized by: the clutch comprises a clutch body and a clutch cover, wherein,
the brake assembly is placed in the brake drum and comprises a brake base disc, a brake cylinder, a hydraulic pipeline, brake shoes, a brake shoe baffle, a support pin and a return spring;
the four brake shoes are respectively pivoted with the support pins along the edge of the brake substrate; the brake shoe baffle is fixed on the brake base plate and is in contact with the inner side surface of the brake shoe so as to limit the brake shoe; the separation/engagement between the brake shoe and the brake drum is realized by the separation/contact of the outer side surface of the brake shoe and the inner side surface of the brake drum;
two brake shoes are in a group, and one end of each group of brake shoes, which is far away from the support pin, is connected through a return spring;
the brake assembly is characterized in that the number of the brake cylinders is two, the brake cylinders are connected with a hydraulic pipeline, each brake cylinder is provided with two pistons, the end parts of the pistons are abutted to the end part of one end, far away from the supporting pin, of each brake shoe, and the pistons push the brake shoes to expand outwards to realize separation/connection between the brake assembly and the brake drum by driving the pistons to move through hydraulic pressure in the hydraulic pipeline.
2. A hydraulically controlled transmission, characterized by: the hydraulic transmission device comprises a shell, an input shaft, an output shaft, an intermediate shaft, a hydraulic transmission conversion device, an external hydraulic pipeline, an electric control hydraulic control unit and the clutch according to claim 1, wherein the input shaft, the output shaft, the intermediate shaft, the hydraulic transmission conversion device, the external hydraulic pipeline and the electric control hydraulic control unit are arranged in the shell;
the input shaft is sleeved with a plurality of clutches and a plurality of gears corresponding to the clutches, the gears are fixedly connected with brake drums of the clutches, and the input shaft is fixedly connected with brake components of the clutches;
the output shaft is sleeved with a plurality of clutches and a plurality of gears corresponding to the clutches, the gears are fixedly connected with brake drums of the clutches, and the output shaft is fixedly connected with brake components of the clutches;
a plurality of gears are fixed on the intermediate shaft and are respectively meshed with the gears on the input shaft and the output shaft to realize the transmission between the input shaft and the output shaft;
the clutch is characterized in that a plurality of internal hydraulic pipelines are arranged in the shaft bodies of the input shaft and the output shaft, each internal hydraulic pipeline is provided with two openings on the surface of the shaft, one opening is connected with a hydraulic pipeline on the clutch, and the other opening is connected to an electric control hydraulic control unit through a hydraulic transmission conversion device and an external hydraulic pipeline so as to control the separation/connection of each clutch.
3. The hydraulically controlled transmission as claimed in claim 2, wherein: the hydraulic transmission conversion device is in a hollow round tube shape, a plurality of annular grooves are formed in the inner side of the hydraulic transmission conversion device, and a round hole radially penetrates through the bottom of each groove to the outer surface of the hydraulic transmission conversion device; the groove is butted with the shaft tail end openings of the input shaft and the output shaft; the outer side of the round hole is in butt joint with the electric control hydraulic control unit through a hydraulic pipeline.
4. The hydraulically controlled transmission as claimed in claim 2, wherein: and bearings are sleeved at the ends of the input shaft, the output shaft and the intermediate shaft and are fixed on the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921827318.1U CN211231345U (en) | 2019-10-29 | 2019-10-29 | Hydraulically controlled clutch and transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921827318.1U CN211231345U (en) | 2019-10-29 | 2019-10-29 | Hydraulically controlled clutch and transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211231345U true CN211231345U (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921827318.1U Active CN211231345U (en) | 2019-10-29 | 2019-10-29 | Hydraulically controlled clutch and transmission |
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| Country | Link |
|---|---|
| CN (1) | CN211231345U (en) |
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- 2019-10-29 CN CN201921827318.1U patent/CN211231345U/en active Active
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