CN211693487U - Hydraulic gear shifting mechanism - Google Patents

Abstract

The utility model discloses a hydraulic shifting mechanism, which comprises a valve body and a shifting actuator assembly located below the valve body. One end face of the valve body is provided with a first valve group, and the other end face of the valve body is provided with a second valve group , the top surface of the valve body is provided with oil outlet holes corresponding to the first valve group and the second valve group, and one side of the valve body is provided with a first oil drain hole, an oil inlet hole, a second oil drain hole and a third oil drain hole. an oil drain hole; the shift actuator assembly includes a first cavity body and a second cavity body arranged in parallel, the two ends of the first cavity body are respectively provided with a first through hole and a second through hole, and the first through hole and the second through hole are respectively provided. A first piston is arranged between the holes, the middle of the first piston is connected with the first fork, both ends of the second cavity are respectively provided with a third through hole and a fourth through hole, the third through hole and the fourth through hole A second piston is arranged therebetween, and the middle part of the second piston is connected with the second fork. The utility model adopts the hydraulic shifting mechanism of the above structure, the structure is simple and reasonable, and the shifting action is more convenient and quick.

Description

hydraulic shift mechanism

technical field

The utility model relates to the technical field of electric vehicle shifting mechanisms, in particular to a hydraulic shifting mechanism.

Background technique

With the rise and development of the electric vehicle industry, electric vehicles have become a common means of transportation when people travel. Most electric vehicles are driven by a single speed ratio, that is, the speed of the vehicle can only be controlled by the rotational speed of the motor, and cannot be regulated by the speed ratio, which cannot meet the current national road conditions and the full-load operation of commercial vehicles. People usually join the gearbox to drive the vehicle to improve the running performance of the car, but the gearbox usually adopts a manual shifting control method, which is inconvenient for the driver to shift.

Utility model content

The purpose of the utility model is to provide a hydraulic shifting mechanism, which has a simple and reasonable structure and makes the shifting action more convenient and quick.

In order to achieve the above purpose, the present invention provides a hydraulic shift mechanism, which includes a valve body and a shift actuator assembly located under the valve body, one end face of the valve body is provided with a first valve group, and the valve The other end surface of the valve body is provided with a second valve group, the top surface of the valve body is provided with oil outlet holes correspondingly connected with the first valve group and the second valve group, and one side of the valve body is provided with an oil outlet corresponding to the first valve group and the second valve group. There are a first oil drain hole, an oil inlet hole, a second oil drain hole and a third oil drain hole arranged in parallel. The first oil drain hole is connected to the first valve group through a first oil drain passage, and the second oil drain hole is connected to the first valve group and the first valve group through a second oil drain passage. The second valve group is connected, and the third oil drain hole is connected with the second valve group through the third oil drain oil passage;

The shift actuator assembly includes a first cavity and a second cavity arranged in parallel, and both ends of the first cavity are respectively provided with a first through hole and a second through hole, and the first through hole and the A first piston is arranged between the second through holes, the middle part of the first piston is vertically connected with the first fork, and both ends of the second cavity are respectively provided with a third through hole and a fourth through hole, A second piston is arranged between the third through hole and the fourth through hole, and the middle portion of the second piston is vertically connected with the second fork.

Preferably, the first valve group and the second valve group are arranged alternately, the first valve group includes a clutch solenoid valve, a fourth-speed solenoid valve and a third-speed solenoid valve, and the second valve group includes a first-speed solenoid valve valve and second-speed solenoid valve.

Preferably, the oil outlet hole includes a first oil outlet hole, a second oil outlet hole, a third oil outlet hole, a fourth oil outlet hole and a fifth oil outlet hole, and the first oil outlet hole is connected to the clutch. The solenoid valve is connected, the second oil outlet hole is connected with the fourth gear solenoid valve, the third oil outlet hole is connected with the third gear solenoid valve, and the fourth oil outlet hole is connected with the second gear solenoid valve connection, the fifth oil outlet is connected with the first-gear solenoid valve.

Preferably, the first through hole is connected with the fifth oil outlet hole, the second through hole is connected with the fourth oil outlet hole, and the third through hole is connected with the third oil outlet hole , the fourth through hole is connected with the second oil outlet hole.

Preferably, the clutch solenoid valve, the first-speed solenoid valve, the second-speed solenoid valve, the third-speed solenoid valve and the fourth-speed solenoid valve all include one hole, two holes, three holes, four holes and Five holes, the first hole is connected to the second oil drain channel, the second hole is connected to the oil outlet hole correspondingly, the third hole and the fourth hole are both connected to the oil supply oil channel, The five holes are connected with the first oil drain channel or the third oil drain channel.

Therefore, the utility model adopts the hydraulic shifting mechanism of the above-mentioned structure, which has a simple and reasonable structure, and makes the shifting action more convenient and quick.

The technical solutions of the present utility model will be described in further detail below through the accompanying drawings and embodiments.

Description of drawings

1 is a schematic diagram of a front view of an embodiment of a hydraulic shifting mechanism of the present invention;

2 is a schematic diagram of a side view of an embodiment of a hydraulic shifting mechanism of the present invention;

3 is a schematic diagram of a top view of an embodiment of the hydraulic shifting mechanism of the present invention.

reference number

1, valve body; 2, first valve group; 21, clutch solenoid valve; 22, fourth gear solenoid valve; 23, third gear solenoid valve; 3, second valve group; 31, first gear solenoid valve; 32, second gear Solenoid valve; 4, oil outlet; 41, first oil outlet; 42, second oil outlet; 43, third oil outlet; 44, fourth oil outlet; 45, fifth oil outlet; 5 , the first oil drain hole; 6, the oil inlet hole; 7, the second oil drain hole; 8, the third oil drain hole; 9, the oil supply channel; 10, the first oil drain channel; 11, the second drain hole oil passage; 12, the third oil drain passage; 13, the first cavity; 14, the second cavity; 15, the third through hole; 16, the fourth through hole; 17, the second piston; 18, the first Two forks.

Detailed ways

The embodiments of the present utility model will be further described below with reference to the accompanying drawings.

1 is a schematic diagram of a front view of an embodiment of a hydraulic shifting mechanism of the present utility model; FIG. 2 is a schematic diagram of a side view of an embodiment of the hydraulic shifting mechanism of the present utility model; FIG. 3 is a top view of an embodiment of the hydraulic shifting mechanism of the present utility model. As shown in the figure, a hydraulic shift mechanism includes a valve body 1 and a shift actuating assembly located under the valve body 1. One end face of the valve body 1 is provided with a first valve group 2, and the other side of the valve body 1 is provided with a first valve group 2. One end face is provided with a second valve group 3 , the first valve group 2 includes a clutch solenoid valve 21 , a fourth-speed solenoid valve 22 and a third-speed solenoid valve 23 , and the second valve group 3 includes a first-speed solenoid valve 31 and a second-speed solenoid valve 32 . The first valve group 2 and the second valve group 3 are staggered, and the staggered arrangement can reduce the volume of the valve body 1 . The top surface of the valve body 1 is provided with an oil outlet hole 4 corresponding to the first valve group 2 and the second valve group 3. The oil outlet hole 4 includes a first oil outlet hole 41, a second oil outlet hole 42, and a third oil outlet hole 4. Oil hole 43, fourth oil outlet 44 and fifth oil outlet 45, the first oil outlet 41 is connected with the clutch solenoid valve 21, the second oil outlet 42 is connected with the fourth gear solenoid valve 22, and the third oil outlet 43 is connected with the third-speed solenoid valve 23 , the fourth oil outlet hole 44 is connected with the second-speed solenoid valve 32 , and the fifth oil outlet hole 45 is connected with the first-speed solenoid valve 31 . The oil outlet hole 4 is used to deliver the oil in the oil passage of the valve body 1 to the shift actuator assembly.

One side of the valve body 1 is provided with a first oil drain hole 5, an oil inlet hole 6, a second oil drain hole 7 and a third oil drain hole 8 arranged in parallel. A valve group 2 is connected to the second valve group 3 , and the oil supply passage 9 is used for delivering oil to the first valve group 2 and the second valve group 3 . The first oil drain hole 5 is connected to the first valve group 2 through the first oil drain oil passage 10, and the second oil drain hole 7 is connected to the first valve group 2 and the second valve group 3 through the second oil drain oil passage 11. The third oil drain hole 8 is connected to the second valve group 3 through the third oil drain oil passage 12. The first oil drain oil passage 10, the second oil drain oil passage 11 and the third oil drain oil passage 12 are all used for changing Drain the excess oil from the actuator assembly.

The shift actuator assembly includes a first cavity 13 and a second cavity 14 arranged in parallel. The two ends of the first cavity 13 are respectively provided with a first through hole and a second through hole. The first through hole and the fifth oil outlet The hole is connected 45, the second through hole is connected with the fourth oil outlet hole 44, a first piston is arranged between the first through hole and the second through hole, and the middle part of the first piston is vertically connected with the first fork. The hydraulic pressure difference between the two ends of the piston makes the piston move, which in turn drives the first shift fork to move.

Both ends of the second cavity 14 are respectively provided with a third through hole 15 and a fourth through hole 16 , the third through hole 15 is connected with the third oil outlet hole 43 , and the fourth through hole 16 is connected with the second oil outlet hole 42 . A second piston 17 is provided between the third through hole 15 and the fourth through hole 16 , the middle of the second piston 17 is vertically connected with the second fork 18 , and the hydraulic pressure difference between the two ends of the second piston 17 makes the piston move, thereby driving the second piston 17 . The second shift fork 18 moves, and the second shift fork 18 is used for connecting with the gears on the gearbox to complete the shifting action of the third gear and the fourth gear.

The clutch solenoid valve 21 , the first-speed solenoid valve 31 , the second-speed solenoid valve 32 , the third-speed solenoid valve 23 and the fourth-speed solenoid valve 22 all include one hole, two holes, three holes, four holes and five holes. The drain oil passage 11 is connected, the second hole is connected with the oil outlet hole 4 correspondingly, the third hole and the fourth hole are connected with the oil supply oil passage 9, and the fifth hole is connected with the first oil drain oil passage 10 or the third oil drain oil passage 12 , when the power is on, the five holes and the four holes are connected, the four holes and the three holes are closed, the three holes and the second holes are connected, and the second hole and the first hole are closed, when the power is off, the five holes and the four holes are closed. closed between the four holes and three holes, closed between the third hole and the second hole, and communicated between the second hole and the first hole.

When in use, the clutch is energized and working, the oil is pressed into the clutch solenoid valve 21 from the oil inlet through the three holes, and the clutch solenoid valve 21 is energized to work, so that the oil flows from the two holes of the clutch solenoid valve 21 to the first oil outlet hole 41 and then After flowing into the clutch, the excess oil of the shifting mechanism can flow to the first oil drain passage 10 along the direction of the fourth hole to the fifth hole for pressure relief.

The fourth-speed solenoid valve 22 is in the working state. At this time, the shift switch is pressed, the fourth-speed solenoid valve 22 is energized and the clutch solenoid valve 21 is powered off. At this time, the third and fourth holes of the clutch solenoid valve 21 are connected, and the second hole and the third hole are connected. When the valve is closed, the oil enters the fourth-stop solenoid valve 22 from the oil supply passage 9 through the four holes. At this time, the second and third holes of the fourth-stop solenoid valve 22 are connected, and the oil flows to the second oil outlet hole 42 through the second hole, and then From the second oil outlet hole 42 to the fourth through hole 16 and then into the second cavity 14, the piston moves with the shift fork to complete the action of engaging the fourth gear. During this movement of the piston, the excess oil in the second cavity 14 flows to the third oil outlet hole 43 through the third through hole 15, and then flows from the third oil outlet hole 43 to the second hole of the third block solenoid valve 23, and the oil The liquid flows from the second hole to the first hole in the third-speed solenoid valve 23 , and then is discharged through the second oil drain passage 11 . The process of engaging the third gear, second gear and first gear is similar to the above-mentioned operation of engaging fourth gear, and will not be repeated here.

Therefore, the utility model adopts the hydraulic shifting mechanism of the above-mentioned structure, which has a simple and reasonable structure, and makes the shifting action more convenient and quick.

Finally it should be noted that the above embodiment is only used to illustrate the technical scheme of the present utility model rather than limiting it, although the present utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should understand: It is still possible to modify or equivalently replace the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions depart from the spirit and scope of the technical solutions of the present invention.

Claims (5)

1. A hydraulic pressure gearshift, its characterized in that: the gear shifting control valve comprises a valve body and a gear shifting execution assembly positioned below the valve body, wherein a first valve bank is arranged on one end face of the valve body, a second valve bank is arranged on the other end face of the valve body, an oil outlet correspondingly connected with the first valve bank and the second valve bank is arranged on the top face of the valve body, a first oil drainage hole, an oil inlet hole, a second oil drainage hole and a third oil drainage hole which are arranged in parallel are arranged on one side face of the valve body, the oil inlet hole is sequentially connected with the first valve bank and the second valve bank through oil supply ducts, the first oil drainage hole is connected with the first valve bank through a first oil drainage duct, the second oil drainage hole is connected with the first valve bank and the second valve bank through a second oil drainage duct, and the third oil drainage hole is connected with the second valve bank through a third oil drainage duct;

the gear shifting execution assembly comprises a first cavity and a second cavity which are arranged side by side, wherein a first through hole and a second through hole are formed in the two ends of the first cavity respectively, a first piston is arranged between the first through hole and the second through hole, the middle of the first piston is perpendicularly connected with a first shifting fork, a third through hole and a fourth through hole are formed in the two ends of the second cavity respectively, a second piston is arranged between the third through hole and the fourth through hole, and the middle of the second piston is perpendicularly connected with the second shifting fork.

2. The hydraulic shift mechanism of claim 1, wherein: the first valve bank and the second valve bank are arranged in a staggered mode, the first valve bank comprises a clutch electromagnetic valve, a four-gear electromagnetic valve and a three-gear electromagnetic valve, and the second valve bank comprises a first-gear electromagnetic valve and a second-gear electromagnetic valve.

3. The hydraulic shift mechanism of claim 2, wherein: the oil outlet includes first oil outlet, second oil outlet, third oil outlet, fourth oil outlet and fifth oil outlet, first oil outlet with the clutch solenoid valve is connected, the second oil outlet with the fourth keeps off the solenoid valve and connects, the third oil outlet with the third keeps off the solenoid valve and connects, the fourth oil outlet with keep off the solenoid valve and connect, the fifth oil outlet with one keeps off the solenoid valve and connects.

4. The hydraulic shift mechanism of claim 3, wherein: the first through hole is connected with the fifth oil outlet hole, the second through hole is connected with the fourth oil outlet hole, the third through hole is connected with the third oil outlet hole, and the fourth through hole is connected with the second oil outlet hole.

5. The hydraulic shift mechanism of claim 4, wherein: the clutch solenoid valve keep off the solenoid valve, three keep off the solenoid valve with four keep off the solenoid valve and all include a hole, two holes, three holes, four holes and five holes, a hole with the second draining oil duct is connected, two holes with the oil outlet corresponds the connection, three holes with four holes all with the oil supply oil duct is connected, five holes are connected with first draining oil duct or third draining oil duct.

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