Automatic speed change hydraulic control system

Abstract

The utility model relates to the technical field of automatic speed change hydraulic control, and discloses an automatic speed change hydraulic control system which comprises a speed changer shell, a valve shell is integrally formed at the top of the speed changer shell, a control mechanism is arranged in the valve shell, and the control mechanism comprises a valve rod. A first cavity channel and a second cavity channel are formed in the valve shell and communicate with each other. According to the design of the control mechanism, after the valve shell and the transmission are integrally formed, the purpose of hydraulic adjustment and control can be achieved by adjusting the position of the valve rod in the valve shell during hydraulic control speed change, and when the valve rod needs to be taken out, the valve rod can be pulled out only by taking down the end cover, so that the operation is convenient. And then the two mounting rings are taken out of the first positioning frame and the second positioning frame correspondingly to achieve the decomposition purpose, the operation process is simple and convenient, and a user can conveniently carry out maintenance work on components such as the valve rod.

Description

Technical Field

[0001] This application relates to the technical field of self-variable hydraulic control, and particularly to a self-variable hydraulic control system. Background Art

[0002] An automatic transmission, also known as an automatic gearbox, is a speed-changing device that can automatically shift gears according to the vehicle speed and engine speed of an automobile. It is relative to a manual gearbox. There are four common types of automobile automatic gearboxes, namely hydraulic automatic gearbox, mechanical continuously variable automatic gearbox, electronically controlled mechanical automatic gearbox, and dual-clutch automatic gearbox.

[0003] Patent network publication number CN213839499U discloses a hydraulic control system applied to an automatic transmission, which includes several clutches, several shift control valves, several solenoid valves, a main oil circuit and a pilot oil circuit. Each solenoid valve controls a corresponding shift control valve, and each shift control valve controls a corresponding clutch; a main oil circuit pressure reducing valve is provided on the main oil circuit; it also includes a pressure reducing solenoid valve for driving the main oil circuit pressure reducing valve. The oil inlet end of the pressure reducing solenoid valve is communicated with the pilot oil circuit, and the oil outlet end is communicated with the control end of the main oil circuit pressure reducing valve and the control end of the pilot valve through an oil circuit. It avoids the transmission starting under pressure, reduces the starting resistance of the transmission, and greatly improves the cold start performance of the transmission. It still has a good starting effect at minus 35 degrees Celsius.

[0004] When the transmission is working, the core of its hydraulic control is to control the oil circuit through a valve body. When shifting gears, the valve body needs to repeatedly adjust the hydraulic oil circuit, and correspondingly, the attitude of the valve core needs to be adjusted to achieve the switching purpose. However, in the existing device, once the valve core is damaged, the steps of removing the valve core from the gearbox are relatively cumbersome, and the above device also lacks the function of conveniently installing and unloading the valve core. Utility Model Content

[0005] In order to solve the above-mentioned problems, this application provides a self-variable hydraulic control system.

[0006] The self-variable hydraulic control system provided by this application adopts the following technical solutions:

[0007] A self-variable hydraulic control system includes a transmission housing, and a valve housing is integrally formed on the top of the transmission housing, and a control mechanism is arranged inside the valve housing.

[0008] The control mechanism includes a valve stem. Inside the valve housing, a first chamber and a second chamber are respectively formed. The first chamber and the second chamber are connected. The valve stem sequentially passes through the first chamber and the second chamber. A first barrier ring and three second barrier rings are fixedly connected to the outside of the valve stem. The first barrier ring is arranged inside the first chamber and matches the first chamber. The second barrier rings are arranged inside the second chamber and match the second chamber. A end cover is arranged on one side of the valve housing. The valve housing extends into the end cover and is threadedly connected to the end cover. A first positioning frame is fixedly connected inside the end cover. One end of the valve stem is rotatably connected to a second positioning frame. A first spring is arranged between the first positioning frame and the second positioning frame. Both left and right ends of the first spring are fixedly connected with mounting rings.

[0009] By adopting the above technical solution, after the valve housing and the transmission are integrally formed, during hydraulic control of the speed change, the position of the valve stem inside the valve housing can be adjusted to achieve the purpose of hydraulic regulation and control. And when the valve stem needs to be taken out, only the end cover needs to be removed and then the valve stem can be pulled out. Subsequently, the two mounting rings are respectively taken out from the first positioning frame and the second positioning frame to achieve the disassembly purpose. The operation process is simple and convenient, which is beneficial for the user to carry out the maintenance work of components such as the valve stem.

[0010] Preferably, the first positioning frame and the second positioning frame are both provided with insertion holes, and the insertion holes are evenly distributed in a circumferential manner on the first positioning frame and the second positioning frame respectively.

[0011] By adopting the above technical solution, the insertion holes play a role in assisting in limiting.

[0012] Preferably, the two mounting rings respectively extend into the first positioning frame and the second positioning frame, and the two mounting rings respectively match the first positioning frame and the second positioning frame.

[0013] By adopting the above technical solution, the sizes of the mounting rings respectively match the first positioning frame and the second positioning frame.

[0014] Preferably, sliding blocks are slidably connected inside the two mounting rings. The sliding blocks extend out of the mounting rings. The sliding blocks penetrate through the insertion holes and match the insertion holes. A second spring is fixedly connected inside the mounting rings, and the second spring is fixedly connected inside the mounting rings.

[0015] By adopting the above technical solution, the second spring has an elastic thrust force to push the sliding blocks out of the mounting rings.

[0016] Preferably, a sealing ring is fixedly connected inside the end cover, and one side of the sealing ring is closely attached to one side of the valve housing.

[0017] By adopting the above technical solution, the sealing ring can effectively improve the sealing performance of the end cover to the valve housing.

[0018] Preferably, a first inlet, a second inlet, a third inlet, and a fourth inlet are respectively formed at the top of the valve housing. The first inlet is arranged at the top of the first channel and is communicated with the first channel. The second inlet, the third inlet, and the fourth inlet are all arranged at the top of the second channel, and the second inlet, the third inlet, and the fourth inlet are all communicated with the second channel.

[0019] By adopting the above technical solution, the oil fluid can enter the interior of the first channel through the first inlet, and enter the interior of the second channel through the second inlet, the third inlet, and the fourth inlet respectively.

[0020] Preferably, a first discharge port and a second discharge port are respectively formed at the bottom of the valve housing. The first discharge port is arranged at the bottom of the first channel and is communicated with the first channel. The second discharge port is arranged at the bottom of the second channel and is communicated with the second channel.

[0021] By adopting the above technical solution, the oil fluid entering the interior of the valve housing can be discharged through the first discharge port or the second discharge port.

[0022] In summary, the present application includes the following beneficial technical effects:

[0023] 1. A self-variable hydraulic control system. Through the design of the control mechanism, after the valve housing and the transmission are integrally formed, during hydraulic control for speed change, the position of the regulating valve stem inside the valve housing can be adjusted to achieve the purpose of hydraulic regulation and control. And when it is necessary to take out the valve stem, only the end cover needs to be removed, and then the valve stem can be pulled out, and then the two mounting rings can be taken out from the first positioning frame and the second positioning frame respectively to achieve the purpose of disassembly. The operation process is simple and convenient, which is beneficial for the user to carry out the maintenance work on components such as the valve stem.

[0024] 2. A self-variable hydraulic control system. With a simple structural design, while realizing the hydraulic control function, it can also quickly load and unload the valve stem, which is beneficial for carrying out the maintenance work on the valve stem. And while achieving the above functions, not too many components are added, which is beneficial for production manufacturing and controlling the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the structure of the present utility model;

[0026] Figure 2 is a cross-sectional view of the structure of the present utility model;

[0027] Figure 3 is Figure 2 the enlarged view of part A in

[0028] Figure 4This is the structural decomposition diagram of the utility model.

[0029] Explanation of reference numerals: 1, transmission housing; 2, valve housing; 3, control mechanism; 31, valve stem; 32, first channel; 33, second channel; 34, first barrier ring; 35, second barrier ring; 36, end cap; 37, first positioning frame; 38, second positioning frame; 39, first spring; 391, mounting ring; 392, jack; 393, plug; 394, second spring; 395, sealing ring; 396, first inlet; 397, second inlet; 398, third inlet; 399, fourth inlet; 381, first outlet; 382, second outlet. Detailed implementation manners

[0030] The following will Figures 1-4 make a further detailed description of this application.

[0031] This application discloses a self-variable hydraulic control system. Referring to Figures 1-4 , a self-variable hydraulic control system includes a transmission housing 1. A valve housing 2 is integrally formed at the top of the transmission housing 1. A control mechanism 3 is arranged inside the valve housing 2. The control mechanism 3 includes a valve stem 31. A first channel 32 and a second channel 33 are respectively formed inside the valve housing 2. The first channel 32 and the second channel 33 are communicated with each other. The valve stem 31 sequentially penetrates through the first channel 32 and the second channel 33. A first barrier ring 34 and three second barrier rings 35 are fixedly connected to the outside of the valve stem 31. The first barrier ring 34 is arranged inside the first channel 32 and matches the first channel 32. The second barrier rings 35 are arranged inside the second channel 33 and match the second channel 33. An end cap 36 is arranged on one side of the valve housing 2. The valve housing 2 extends into the end cap 36 and is threadedly connected to the end cap 36;

[0032] A first positioning frame 37 is fixedly connected inside the end cap 36. One end of the valve stem 31 is rotatably connected to a second positioning frame 38. A first spring 39 is arranged between the first positioning frame 37 and the second positioning frame 38. Mounting rings 391 are fixedly connected to both the left and right ends of the first spring 39. After the valve housing 2 and the transmission are integrally formed, during hydraulic control for speed change, the position of the valve stem 31 inside the valve housing 2 can be adjusted to achieve the purpose of hydraulic regulation and control. And when it is necessary to take out the valve stem 31, only the end cap 36 needs to be removed, and then the valve stem 31 can be pulled out. Subsequently, the two mounting rings 391 can be taken out from the first positioning frame 37 and the second positioning frame 38 respectively to achieve the decomposition purpose. The operation process is simple and convenient, which is beneficial to the user to carry out the maintenance work on components such as the valve stem 31.

[0033] The first positioning frame 37 and the second positioning frame 38 are both provided with jacks 392. The jacks 392 are evenly distributed in a circular pattern around the first positioning frame 37 and the second positioning frame 38 respectively. The jacks 392 play a role in assisting with positioning. The two mounting rings 391 extend into the first positioning frame 37 and the second positioning frame 38 respectively, and the two mounting rings 391 match the first positioning frame 37 and the second positioning frame 38 respectively. The sizes of the mounting rings 391 match the first positioning frame 37 and the second positioning frame 38 respectively. A plug 393 is slidably connected inside each of the two mounting rings 391. The plug 393 extends outside the mounting ring 391. The plug 393 passes through the jack 392 and matches the jack 392. A second spring 394 is fixedly connected inside the mounting ring 391. The second spring 394 is fixedly connected to the inside of the mounting ring 391. The second spring 394 exerts an elastic thrust on the plug 393 to push it out of the mounting ring 391;

[0034] A sealing ring 395 is fixedly connected inside the end cover 36. One side of the sealing ring 395 is in close contact with one side of the valve housing 2. The sealing ring 395 can effectively improve the sealing performance of the end cover 36 for the valve housing 2. The top of the valve housing 2 is respectively provided with a first inlet 396, a second inlet 397, a third inlet 398, and a fourth inlet 399. The first inlet 396 is arranged at the top of the first channel 32 and is in communication with the first channel 32. The second inlet 397, the third inlet 398, and the fourth inlet 399 are all arranged at the top of the second channel 33, and the second inlet 397, the third inlet 398, and the fourth inlet 399 are all in communication with the second channel 33. The oil can enter the inside of the first channel 32 through the first inlet 396 and enter the inside of the second channel 33 through the second inlet 397, the third inlet 398, and the fourth inlet 399 respectively;

[0035] The bottom of the valve housing 2 is respectively provided with a first outlet 381 and a second outlet 382. The first outlet 381 is arranged at the bottom of the first channel 32 and is in communication with the first channel 32. The second outlet 382 is arranged at the bottom of the second channel 33 and is in communication with the second channel 33. The oil that enters the inside of the valve housing 2 can be discharged through the first outlet 381 or the second outlet 382.

[0036] In the actual operation process, when this device is in use, the diameter of the first barrier ring 34 in this device is larger than that of the second barrier ring 35. Then, the surface area of the corresponding surfaces on the left and right sides of the first barrier ring 34 is larger than that of the second barrier ring 35. When the hydraulic oil under pressure enters the first inlet 396, the force acting on the first barrier ring 34 is larger than the force acting on the adjacent second barrier ring 35. This area difference will generate a pressure difference, prompting the valve stem 31 to move to the left. When the hydraulic oil enters through the fourth inlet 399, the valve stem 31 moves in the direction towards the end cover 36. At this time, the two second barrier rings 35 farthest from the end cover 36 will move to both sides of the third inlet 398. Then, a passage is formed at the position of the valve stem 31 between them. The hydraulic oil from the third inlet 398 can be discharged through the second outlet 382. Since the surface areas of the corresponding surfaces of the adjacent second barrier rings 35 are equal, according to the above principle, after the oil enters through the second inlet 397 or the third inlet 398, if there is no pressure at the fourth inlet 399, the valve stem 31 tends to be in a static state. However, due to the elastic thrust of the first spring 39 on the valve stem 31, the balance is broken, prompting the valve stem 31 to move to the initial position, that is, one end of the valve stem 31 abuts against the inner wall of the valve housing 2. Through the above steps, the hydraulic control function of the self-variable speed device can be properly achieved.

[0037] Finally, when it is necessary to take out the valve stem 31 for maintenance and other operations, just rotate the end cover 36 and remove the end cover 36 from the valve housing 2, then the valve stem 31 can be pulled out. After the valve stem 31 is pulled out, after pushing the insertion block 393 to leave the insertion hole 392, at this time, the mounting ring 391 can be taken out from the inside of the first positioning frame 37 and the second positioning frame 38 respectively to achieve the purpose of disassembly. The whole operation process is simple and convenient, which is beneficial for the user to carry out the maintenance work of components such as the valve stem 31.

[0038] The above are all the preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A self-shifting hydraulic control system, comprising a transmission housing (1), characterized in that: A valve housing (2) is integrally formed on the top of the transmission housing (1), and a control mechanism (3) is arranged inside the valve housing (2); The control mechanism (3) comprises a valve stem (31), a first cavity (32) and a second cavity (33) are respectively provided inside the valve housing (2), the first cavity (32) and the second cavity (33) are communicated, the valve stem (31) sequentially passes through the first cavity (32) and the second cavity (33), the valve stem (31) is externally fixedly connected with a first barrier ring (34) and three second barrier rings (35), the first barrier ring (34) is arranged inside the first cavity (32) and matches the first cavity (32), the second barrier ring (35) is arranged on the first cavity (32), and the third barrier ring (35) is fixedly connected to the valve stem (31). The valve housing (2) is provided with an end cover (36) on one side thereof, the valve housing (2) extends into the end cover (36) and is connected to the end cover (36) by means of a thread, a first positioning frame (37) is fixedly connected to the end cover (36), one end of the valve stem (31) is rotatably connected to the second positioning frame (38), a first spring (39) is provided between the first positioning frame (37) and the second positioning frame (38), and both left and right ends of the first spring (39) are fixedly connected to mounting rings (391).

2. The self-shifting hydraulic control system according to claim 1, characterized in that: The first positioning frame (37) and the second positioning frame (38) are both provided with plug holes (392), and the plug holes (392) are respectively distributed around the first positioning frame (37) and the second positioning frame (38) at equal intervals.

3. The self-shifting hydraulic control system according to claim 1, characterized in that: The two mounting rings (391) extend into the first positioning frame (37) and the second positioning frame (38) respectively, and the two mounting rings (391) match the first positioning frame (37) and the second positioning frame (38) respectively.

4. The self-shifting hydraulic control system according to claim 1, characterized in that: The two mounting rings (391) are both slidably connected with an insert block (393), the insert block (393) extends outside the mounting ring (391), the insert block (393) passes through the insertion hole (392) and matches the insertion hole (392), and the mounting ring (391) is fixedly connected with a second spring (394), and the second spring (394) is fixedly connected to the inside of the mounting ring (391).

5. The self-shifting hydraulic control system according to claim 1, characterized in that: A sealing ring (395) is fixedly connected inside the end cover (36), and one side of the sealing ring (395) is tightly fitted to one side of the valve housing (2).

6. The self-shifting hydraulic control system according to claim 1, characterized in that: The top of the valve housing (2) is respectively provided with a first inlet (396), a second inlet (397), a third inlet (398) and a fourth inlet (399); the first inlet (396) is arranged at the top of the first cavity (32) and is communicated with the first cavity (32); the second inlet (397), the third inlet (398) and the fourth inlet (399) are all arranged at the top of the second cavity (33); and the second inlet (397), the third inlet (398) and the fourth inlet (399) are all communicated with the second cavity (33).

7. The self-shifting hydraulic control system according to claim 1, characterized in that: The bottom of the valve housing (2) is respectively provided with a first discharge outlet (381) and a second discharge outlet (382); the first discharge outlet (381) is arranged at the bottom of the first cavity (32) and is in communication with the first cavity (32); the second discharge outlet (382) is arranged at the bottom of the second cavity (33) and is in communication with the second cavity (33).

Images