Electric control hydraulic gear shifting valve based on Hall gear sensor

Abstract

The utility model discloses an electric control hydraulic gear shifting valve based on a Hall gear sensor, belongs to the technical field of mobile mechanical gear shifting control, and solves the problems that an existing traditional mechanical gear shifting mode is inconvenient to operate and difficult to achieve automation. The gear shifting valve comprises a valve body and two Hall gear sensors, the valve body comprises a main valve body, a left valve body and a right valve body, the left valve body and the right valve body are arranged on the two sides of the main valve body respectively, a first cavity and a second cavity which are arranged side by side are formed in the main valve body, a first gear shifting valve element is arranged in the first cavity, and a second gear shifting valve element is arranged in the second cavity. A first shifting block is arranged in the middle of the first gear shifting valve element. A second gear shifting valve element is arranged in the second cavity, a second shifting block is arranged in the middle of the second gear shifting valve element, and the left valve body and the right valve body are both communicated with the first cavity and the second cavity. According to the electric control hydraulic gear shifting valve based on the Hall gear sensor, accurate sensing and control of the gear shifting position are achieved through the non-contact type detection principle.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile machinery shift control, in particular to an electronically controlled hydraulic shift valve based on a Hall shift sensor. Background Art

[0002] Currently, mobile machinery transmissions typically use mechanical shifting. This typically involves using a mechanical linkage or a flexible shaft to directly push and pull the transmission shift lever to achieve gear changes. This current shifting method consumes cab space, and the linkage design requirements are high, requiring complex assembly, significantly impacting production efficiency.

[0003] Traditional mechanical gear shifting is inconvenient to operate, drivers easily fatigue, gear shifting is heavy and uncomfortable to use, and manual gear shifting often results in the gear not being engaged properly. People have an increasing demand for automated operation of mobile machinery, and traditional mechanical gear shifting can no longer meet the needs of automation due to its insufficient smoothness. Utility Model Content

[0004] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art and provide an electronically controlled hydraulic shift valve based on a Hall shift position sensor. Through the principle of non-contact detection, the valve can achieve accurate perception and control of the shift position, improve the smoothness, response speed and reliability of the shift, and make it convenient for the operator to shift gears.

[0005] The technical solution adopted by the utility model is: an electrically controlled hydraulic shift valve based on a Hall shift position sensor, comprising a valve body and two Hall shift position sensors, the valve body comprising a main valve body, a left valve body, and a right valve body, the left valve body and the right valve body being respectively arranged on both sides of the main valve body, the main valve body being provided with a first cavity and a second cavity arranged side by side, the first cavity being provided with a first shift valve core, the middle part of the first shift valve core being provided with a first shift block; the second cavity being provided with a second shift valve core, the middle part of the second shift valve core being provided with a second shift block, the left valve body and the right valve body being communicated with the first cavity and the second cavity, the left valve body being provided with a fourth hydraulic control valve and a second hydraulic control valve for controlling the rightward movement of the first shift block and the second shift block, the right valve body being provided with a third hydraulic control valve and a first hydraulic control valve for controlling the leftward movement of the first shift block and the second shift block, the two Hall shift position sensors being respectively arranged on the main valve body above the first shift block and the second shift block.

[0006] As a further improvement, the main valve body is provided with a P port connected to the hydraulic system and a T port connected to the oil return tank. The main valve body is also provided with an H1 port and an H2 port connected to the motor.

[0007] Furthermore, the main valve body is also provided with a pressure reducing valve and a one-way valve.

[0008] Furthermore, the left valve body and the right valve body are both provided with hydraulic oil passages communicating with the first cavity and the second cavity.

[0009] Furthermore, a fifth hydraulic pressure control valve and a sixth hydraulic pressure control valve for controlling the flow of ports H1 and H2 are provided in the main valve body.

[0010] Furthermore, a pressure switch is provided in the main valve body.

[0011] Furthermore, the left valve body and the right valve body are respectively provided with a first manual emergency screw and a second manual emergency screw.

[0012] Furthermore, the left valve body and the right valve body are both detachably mounted on the main valve body via connecting screws.

[0013] Beneficial effects

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The utility model is an electronically controlled hydraulic shift valve based on a Hall shift sensor. The movement of the first shift block and the second shift block can respectively drive the two shift forks of the gearbox to move to realize shifting. By arranging a left valve body and a right valve body on both sides of the main valve body, during the shifting process, an external controller sends a shift signal and receives a signal from the Hall shift sensor, and then controls the on and off power of the corresponding solenoid valve. The fourth hydraulic control valve controls the first shift block to move to the right, the third hydraulic control valve controls the first shift block to move to the left, the second hydraulic control valve controls the second shift block to move to the right, and the first hydraulic control valve controls the second shift block to move to the left. When the shift is executed, the shift controller first determines the current first and second shift blocks by detecting the signals of the two Hall shift sensors 7. When the shift block is in the gear position, both shift blocks need to return to neutral, and then it is determined which hydraulic control valve of the first hydraulic control valve, the second hydraulic control valve, the third hydraulic control valve, and the fourth hydraulic control valve needs to be energized. After the Hall shift sensor senses that the gear shift is in place, the controller controls the corresponding hydraulic control valve to cut off the power. The overall structure is simple and compact. The first shift valve core and the second shift valve core in the main valve body are independent of each other and do not affect each other. They can control the movement independently, realize multi-gear switching, and can easily realize various forms of electronic shifting functions such as button shifting. At the same time, it also creates conditions for automation and intelligence, and can effectively solve the problems of traditional mechanical linkage shifting method, such as laboriousness and complex mechanical structure. It has the characteristics of strong practicality and wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a left-side structural schematic diagram of the present utility model;

[0018] Figure 3 It is a right side structural schematic diagram of the present utility model;

[0019] Figure 4 It is an enlarged schematic diagram of the cross-sectional structure in the present utility model;

[0020] Figure 5 This is a schematic diagram of the hydraulic system control in the present utility model.

[0021] Among them: 1-second hydraulic control valve, 2-left valve body, 3-first manual emergency screw, 4-main valve body, 5-first cavity, 6-second cavity, 7-Hall gear position sensor, 8-second manual emergency screw, 9-right valve body, 10-first hydraulic control valve, 11-pressure switch, 12-sixth hydraulic pressure control valve, 13-fifth hydraulic control valve, 14-check valve, 15-pressure reducing valve, 16-P port, 17-T port, 18-H1 port, 19-H2 port, 20-fourth hydraulic control valve, 21-first shift block, 22-second shift block, 23-connecting screw, 24-third hydraulic control valve, 25-first shift valve core, 26-second shift valve core, 27-hydraulic oil channel. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0023] See Figure 1-5As shown, an electrically controlled hydraulic shift valve based on a Hall shift position sensor of the present invention includes a valve body and two Hall shift position sensors 7. The valve body includes a main valve body 4, a left valve body 2, and a right valve body 9. The left valve body 2 and the right valve body 9 are respectively arranged on both sides of the main valve body 4. A first cavity 5 and a second cavity 6 arranged side by side are provided in the main valve body 4. A first shift valve core 25 is provided in the first cavity 5. A first shift block 21 is provided in the middle of the first shift valve core 25. A second shift valve core 26 is provided in the second cavity 6. A second shift valve core 22 is provided in the middle of the second shift valve core 26. The left valve body 2 and the right valve body 9 are both connected to the first cavity 5 and the second cavity 6. The left valve body 2 is provided with a first shift block 21 for controlling the first shift block 21. 1. The fourth hydraulic control valve 20 and the second hydraulic control valve 1 for the second shift block 22 to move to the right. The right valve body 9 is provided with a third hydraulic control valve 24 and a first hydraulic control valve 10 for controlling the first shift block 21 and the second shift block 22 to move to the left. Two Hall shift position sensors 7 are respectively arranged on the main valve body 4 above the first shift block 21 and the second shift block 22. The hydraulic oil of the hydraulic system enters from the P port 16 and returns from the T port 17. The movement of the first shift block 21 and the second shift block 22 can respectively drive the two shift forks of the gearbox to move to achieve gear shifting. By arranging the left valve body 2 and the right valve body 9 on both sides of the main valve body 4, during the gear shifting process, the external controller sends the gear shift signal and receives the Hall shift position sensor 7. The signal is then used to control the on and off of the corresponding solenoid valves, where the fourth hydraulic control valve 20 controls the first shift block 21 to move to the right, the third hydraulic control valve 24 controls the first shift block 21 to move to the left, the second hydraulic control valve 1 controls the second shift block 22 to move to the right, and the first hydraulic control valve 10 controls the second shift block 22 to move to the left. When shifting, the shift controller first determines the current gear position of the first shift block 21 and the second shift block 22 by detecting the signals of the two Hall shift position sensors 7. Both shift blocks need to return to neutral, and then determines which hydraulic control valve needs to be energized, the first hydraulic control valve 10, the second hydraulic control valve 1, the third hydraulic control valve 24, or the fourth hydraulic control valve 20. After the Hall shift sensor 7 senses that the gear shift is in place, the controller controls the corresponding hydraulic control valve to cut off the power. The overall structure is simple and compact. The first shift valve core 25 and the second shift valve core 26 in the main valve body are independent of each other and do not affect each other. They can be independently controlled to move, and multi-gear switching can be achieved. The electronically controlled switching of the gear of the electronically controlled hydraulic shift valve based on the Hall shift sensor 7 allows switching from neutral to any other gear, switching from other gears to neutral, and switching between any gears. It can easily realize various forms of electronic shifting functions such as button shifting, while also creating conditions for automation and intelligence, and can effectively solve the problems of laborious traditional mechanical linkage shifting and complex mechanical structure.

[0024] Specifically, the main valve body 4 is provided with a P port 16 connected to the hydraulic system and a T port 17 connected to the return oil tank. The main valve body 4 is also provided with an H1 port 18 and an H2 port 19 connected to the motor. The hydraulic oil of the hydraulic system enters from the P port 16 and returns from the T port 17. The hydraulic flow through the H1 port 18 and the H2 port 19 is used to control the motor action.

[0025] Preferably, a pressure reducing valve 15 and a one-way valve 14 are further provided on the main valve body 4. The pressure reducing valve 15 can adjust the output hydraulic pressure to meet the shifting force requirements of different gearboxes.

[0026] Furthermore, a hydraulic oil passage 27 connected to the first cavity 5 and the second cavity 6 is provided on the left valve body 2 and the right valve body 9, which is used to transmit the hydraulic oil to the first cavity 5 and the second cavity 6, thereby realizing left and right control of the first shift valve core 25 and the second shift valve core 26 to achieve shifting.

[0027] Furthermore, a fifth hydraulic control valve 13 and a sixth hydraulic pressure control valve 12 are provided in the main valve body 4 for controlling the flow of the H1 port 18 and the H2 port 19. During the gear shifting process, a short-term power-on and power-off signal will be sent to the fifth hydraulic control valve 13 or the sixth hydraulic control valve 12 to control the forward and reverse rotation of the motor to disengage the gear.

[0028] Furthermore, a pressure switch 11 is provided in the main valve body 4 for monitoring the hydraulic pressure in the main valve body 4 .

[0029] Furthermore, a first manual emergency screw 3 and a second manual emergency screw 8 are respectively provided on the left valve body 2 and the right valve body 9 .

[0030] Furthermore, the left valve body 2 and the right valve body 9 are both detachably mounted on the main valve body 4 via connecting screws 23, and are assembled to facilitate production and manufacturing.

[0031] When the electronically controlled hydraulic shift valve based on the Hall shift sensor of this embodiment is in use, the shift controller first determines the current gear position of the first shift block 21 and the second shift block 22 by detecting the signals of the two Hall shift sensors 7. Both shift blocks need to be returned to neutral, and then determines which hydraulic control valve of the first hydraulic control valve 10, the second hydraulic control valve 1, the third hydraulic control valve 24, and the fourth hydraulic control valve 20 needs to be energized. After the Hall shift sensor 7 senses that the gear shift is in place, the controller controls the corresponding hydraulic control valve to cut off the power. The electrically controlled hydraulic shift valve based on the Hall shift position sensor of the present invention has a simple and compact overall structure. The first shift valve core 25 and the second shift valve core 26 in the main valve body are independent of each other and do not affect each other. They can be independently controlled to move and can realize multi-gear switching. The electrically controlled switching of the gear of the electrically controlled hydraulic shift valve based on the Hall shift position sensor 7 allows switching from neutral to any other gear, allows switching from other gears to neutral, and allows switching between any gears. It can easily realize various forms of electronic shifting functions such as button shifting, while also creating conditions for automation and intelligence, and can effectively solve the problems of the traditional mechanical connecting rod shifting method being laborious and the complex mechanical structure.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These modifications and improvements will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. An electronically controlled hydraulic shift valve based on a Hall shift position sensor, characterized in that: The invention comprises a valve body and two Hall shift position sensors (7), wherein the valve body comprises a main valve body (4), a left valve body (2), and a right valve body (9), wherein the left valve body (2) and the right valve body (9) are respectively arranged on both sides of the main valve body (4), wherein a first cavity (5) and a second cavity (6) arranged side by side are provided in the main valve body (4), wherein a first shift valve core (25) is provided in the first cavity (5), wherein a first shift block (21) is provided in the middle of the first shift valve core (25), wherein a second shift valve core (26) is provided in the second cavity (6), wherein a second shift block (22) is provided in the middle of the second shift valve core (26), wherein The left valve body (2) and the right valve body (9) are both connected to the first cavity (5) and the second cavity (6); the left valve body (2) is provided with a fourth hydraulic control valve (20) and a second hydraulic control valve (1) for controlling the first shift block (21) and the second shift block (22) to move to the right; the right valve body (9) is provided with a third hydraulic control valve (24) and a first hydraulic control valve (10) for controlling the first shift block (21) and the second shift block (22) to move to the left; the two Hall shift position sensors (7) are respectively arranged on the main valve body (4) above the first shift block (21) and the second shift block (22).

2. The electrically controlled hydraulic shift valve based on a Hall shift position sensor according to claim 1, characterized in that: The main valve body (4) is provided with a P port (16) connected to the hydraulic system and a T port (17) connected to the oil return tank. The main valve body (4) is also provided with an H1 port (18) and an H2 port (19) connected to the motor.

3. The electronically controlled hydraulic shift valve based on a Hall shift position sensor according to claim 1, characterized in that: The main valve body (4) is also provided with a pressure reducing valve (15) and a one-way valve (14).

4. The electrically controlled hydraulic shift valve based on a Hall shift position sensor according to claim 1, characterized in that: The left valve body (2) and the right valve body (9) are both provided with hydraulic oil passages (27) communicating with the first cavity (5) and the second cavity (6).

5. The electrically controlled hydraulic shift valve based on a Hall shift position sensor according to claim 2, characterized in that: The main valve body (4) is provided with a fifth hydraulic pressure control valve (13) and a sixth hydraulic pressure control valve (12) for controlling the flow of the H1 port (18) and the H2 port (19).

6. The electrically controlled hydraulic shift valve based on a Hall shift position sensor according to claim 1, characterized in that: A pressure switch (11) is provided in the main valve body (4).

7. The electrically controlled hydraulic shift valve based on a Hall shift position sensor according to claim 1, characterized in that: The left valve body (2) and the right valve body (9) are respectively provided with a first manual emergency screw rod (3) and a second manual emergency screw rod (8).

8. The electrically controlled hydraulic shift valve based on a Hall shift position sensor according to claim 1, characterized in that: The left valve body (2) and the right valve body (9) are both detachably mounted on the main valve body (4) via connecting screws (23).

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