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CN-224229218-U - Three-shaft electric control pneumatic gear shifting device, transmission and vehicle

CN224229218UCN 224229218 UCN224229218 UCN 224229218UCN-224229218-U

Abstract

The utility model discloses a three-shaft electric control pneumatic gear shifting device, a transmission and a vehicle, which belong to the technical fields of new energy and AMT (automated mechanical transmission), and comprise a device body, wherein the device body comprises three pneumatic control units which are arranged in parallel, each pneumatic control unit comprises a pneumatic control element, a pneumatic execution element and a displacement monitoring element, each pneumatic control element comprises an electromagnetic valve assembly, each pneumatic execution element comprises a piston rod and a gear shifting head, each piston rod is provided with a piston and a piston bushing assembly, each displacement monitoring element comprises a displacement sensor and a magnet sleeve connected with the gear shifting head, and the device further comprises a ventilation plug, an exhaust plug and an air inlet hole group, the ventilation plug, the exhaust plug and the air inlet hole group are used for providing air intersections for the three pneumatic control units, and each electromagnetic valve assembly is used for controlling the three pneumatic control units to realize gear selection and gear shifting of the device body. The utility model improves the gear selecting function and the gear shifting smoothness, and improves the accuracy of displacement measurement by directly measuring and improves the product performance as a whole.

Inventors

  • ZHENG ZHI
  • LU FEI
  • WANG PENG
  • PENG LIYIN
  • YIN CHONGYI
  • WANG YONG
  • WANG YAN

Assignees

  • 陕西法士特齿轮有限责任公司

Dates

Publication Date
20260512
Application Date
20250619

Claims (10)

  1. 1. The utility model provides a three axle automatically controlled pneumatic gearshift, its characterized in that includes the device body, the device body includes three pneumatic control unit that set up in parallel, wherein: The pneumatic control unit comprises a pneumatic control element, a pneumatic execution element and a displacement monitoring element, wherein the pneumatic control element comprises an electromagnetic valve assembly (1), the pneumatic execution element comprises a piston rod (5) and a gear shifting head (4) connected to the piston rod (5), a piston (6) is arranged on the circumferential periphery of the piston rod (5), and the piston (6) is provided with a piston bushing assembly; the novel pneumatic gear shifting device is characterized by further comprising a ventilation plug (11), an exhaust plug (12) and an air inlet part hole group, wherein the ventilation plug (11), the exhaust plug (12) and the air inlet part hole group are used for providing air intersections for three pneumatic control units, and the electromagnetic valve assembly (1) is used for controlling the three pneumatic control units to realize gear selection and gear shifting of the device body.
  2. 2. The three-axis electric control pneumatic gear shifting device according to claim 1, wherein the displacement sensor (2) is a non-contact linear displacement sensor, the magnet sleeve (3) is fixedly arranged on the gear shifting head (4), the displacement sensor (2) directly measures the axial linear displacement of the piston rod (5) through the induction magnet sleeve (3), and the displacement sensor (2) is used for converting a displacement signal of the magnet sleeve (3) into a voltage signal and outputting the voltage signal.
  3. 3. The three-axis electro-pneumatic gear shifting device according to claim 1, characterized in that the piston bushing assembly comprises a first piston bushing (7) and a second piston bushing (8) circumferentially arranged to the piston (6), the piston rod (5), the piston (6), the first piston bushing (7) and the second piston bushing (8) forming a three-stage piston structure.
  4. 4. The three-axis electric-controlled pneumatic gear shifting device according to claim 1, wherein the air inlet part hole group comprises two air inlet holes (13), the two air inlet holes (13) are respectively arranged on two sides of the device body, one air inlet hole (13) is used for being connected with an air source, and the other air inlet hole (13) is blocked by using a conical screw plug.
  5. 5. The three-shaft electric-controlled pneumatic gear shifting device according to claim 1, wherein the electromagnetic valve assembly (1) comprises a plurality of electromagnetic valve groups, different electromagnetic valve groups can realize a gear selecting function through power failure, each electromagnetic valve group comprises two electromagnetic valves, and two electromagnetic valves of the same electromagnetic valve group can realize a gear shifting function through opening and closing.
  6. 6. The three-shaft electropneumatic gearshift device of claim 1, wherein the device body is adaptable to different six-speed transmissions via an external connection interface.
  7. 7. The three-axis electro-pneumatic gear shifting device according to claim 1, further comprising a wire harness bracket (10), the wire harness bracket (10) being used for fixing the wire harness of the displacement sensor (2) and the solenoid valve assembly (1).
  8. 8. The three-axis electric-controlled pneumatic gear shifting device according to claim 1, further comprising a limiting partition plate (9), wherein the limiting partition plate (9) is arranged at the bottom of the gear shifting block (4), and the limiting partition plate (9) is used for limiting the swing of the gear shifting block (4) in the circumferential direction.
  9. 9. A transmission comprising a three-axis electro-pneumatic shift device as claimed in any one of claims 1 to 8.
  10. 10. A vehicle is characterized in that, the vehicle comprising the transmission of claim 9.

Description

Three-shaft electric control pneumatic gear shifting device, transmission and vehicle Technical Field The utility model belongs to the technical field of new energy and AMT (automated mechanical transmission), and particularly relates to a three-shaft electric control pneumatic gear shifting device, a transmission and a vehicle. Background The automatic gear shifting device is widely suitable for an ATM transmission or a new energy pure electric/hybrid transmission, and is a necessary device for realizing automatic gear shifting of a mechanical transmission. In the field of commercial vehicles, automatic shifting devices generally employ electrically controlled electric shifting mechanisms and electrically controlled pneumatic shifting mechanisms. Traditional electropneumatic control products generally measure the position of a gear shifting head indirectly through an angular displacement sensor, so that the measurement accuracy can be reduced, the gear shifting control is not friendly, and gear shifting impact can be caused in extreme cases. The traditional electric control pneumatic control product generally adopts the structural design of a two-position cylinder, so that the gear shifting force can be small, the gear shifting can be difficult to be accidentally removed, especially the gear shifting overshoot can be caused, the gear shifting impact is produced, and the gear shifting setback is formed. The traditional electric control pneumatic control product generally adopts an anti-rotation screw to limit and prevent the gear shifting shaft from rotating axially, the structural design scheme has extremely high requirements on the transportation and assembly manufacturability of the product, and once the product is knocked, the gear shifting shaft is extremely easy to be blocked, so that gear shifting is difficult, and the gear shifting failure of the transmission occurs. Therefore, in summary, in the aspect of gear shifting, the existing electric control pneumatic gear shifting mechanism may cause gear shifting overshoot due to unreasonable measurement accuracy and design, gear shifting impact is generated, gear shifting setback is formed, and the stability and smoothness of gear shifting are required to be further optimized. Disclosure of utility model The utility model provides a three-shaft electric control pneumatic gear shifting device, a transmission and a vehicle, and aims to solve the problems that in the aspect of gear shifting, gear shifting overshoot and gear shifting impact are possibly caused due to unreasonable measurement precision and design, gear shifting is generated, gear shifting is blocked, and the stability and smoothness of gear shifting are to be further optimized. In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a three-axis electric control pneumatic gear shifting device, which comprises a device body, wherein the device body comprises three pneumatic control units which are arranged in parallel, and the three pneumatic control units are arranged in a parallel manner: The pneumatic control unit comprises a pneumatic control element, a pneumatic execution element and a displacement monitoring element, wherein the pneumatic control element comprises an electromagnetic valve assembly, the pneumatic execution element comprises a piston rod and a gear shifting head connected with the piston rod, the periphery of the piston rod is provided with a piston, and the piston is provided with a piston bushing assembly; The device also comprises a ventilation plug, an exhaust plug and an air inlet part hole group, wherein the ventilation plug, the exhaust plug and the air inlet part hole group are used for providing air intersections for the three pneumatic control units, and the electromagnetic valve assembly is used for controlling the three pneumatic control units to realize gear selection and gear shifting of the device body. In some embodiments, the displacement sensor adopts a non-contact linear displacement sensor, the magnet sleeve is fixedly arranged on the gear shifting head, the displacement sensor directly measures the axial linear displacement of the piston rod through the induction magnet sleeve, and the displacement sensor is used for converting a displacement signal of the magnet sleeve into a voltage signal and outputting the voltage signal. In some embodiments, the piston bushing assembly includes a first piston bushing and a second piston bushing circumferentially disposed to the piston, the piston rod, the piston, the first piston bushing, and the second piston bushing forming a three-stage piston structure. In some embodiments, the air inlet part hole group comprises two air inlet holes, wherein the two air inlet holes are respectively arranged at two sides of the device body, one air inlet hole is used for connecting an air source, and the other air inlet hole is blocked by using a conical screw p