Gear selecting execution structure, gearbox and vehicle

Abstract

The invention provides a gear selecting execution structure, a gearbox and a vehicle, and relates to the field of automobile part manufacturing. The structure comprises a gear selecting small cover, a gear selecting shaft, an air cylinder cover, a gear selecting piston and a gear selecting electromagnetic valve set. The air cylinder cover is fixed to the gear selecting small cover, an air cylinder is formed between the air cylinder cover and the gear selecting small cover, the first end of the gear selecting shaft is located in the air cylinder, the second end of the gear selecting shaft is located outside the air cylinder, the gear selecting piston is arranged in the air cylinder and fixedly connected to the first end of the gear selecting shaft, and the gear selecting piston and the gear selecting shaft can move together in the axial direction of the gear selecting shaft; and the gear selecting electromagnetic valve group is assembled on the outer side end surface of the gear selecting small cover. According to the gearbox, the gear selecting executing mechanism in the gearbox is redesigned and can be independent of the gear shifting executing mechanism, so that the structure is conveniently arranged in the gearbox, the assembling flexibility of the gear selecting executing mechanism in the gearbox is improved, and the gear selecting executing mechanism is conveniently maintained in the later period.

Description

Technical Field

[0001] The present application relates to the field of automobile component manufacturing, and in particular to a gear selection execution structure, a gearbox and a vehicle. Background Art

[0002] An automatic mechanical transmission (AMT) usually includes a gear selection actuator, a gear shift actuator, a transmission control unit (TCU) and a variety of sensors.

[0003] In the prior art, AMT realizes the automatic shifting function of the vehicle through the coordinated work of the gear selection actuator and the gear shift actuator. Specifically, the TCU receives signals from various sensors of the vehicle, such as vehicle speed, engine speed, accelerator pedal position, etc., and calculates the best gear shifting time and gear position based on these signals and the preset gear shifting logic. Then, the TCU controls the gear selection actuator and the gear shift actuator to perform corresponding actions to complete the gear shifting operation.

[0004] However, since AMT usually involves multiple gears, this results in a larger size of the gearbox, thereby increasing the assembly cost of the vehicle. Summary of the invention

[0005] The present application provides a gear selection execution structure, a gearbox and a vehicle, which are used to optimize the structural layout of the gearbox, improve the flexibility and efficiency of the gear selection execution structure assembly, and reduce the overall assembly cost of the gearbox by redesigning the gear selection execution mechanism in the gearbox to make it independent of the gear shifting execution mechanism.

[0006] In a first aspect, the present application provides a gear selection execution structure, comprising: a gear selection cover, a gear selection shaft, a cylinder head, a gear selection piston and a gear selection solenoid valve group;

[0007] The cylinder head is fixed on the small gear selection cover, and a cylinder is formed between the cylinder head and the small gear selection cover. The first end of the gear selection shaft is located in the cylinder, and the second end of the gear selection shaft is located outside the cylinder. The gear selection piston is arranged in the cylinder and is fixedly connected to the first end of the gear selection shaft. The gear selection piston and the gear selection shaft can move together along the axial direction of the gear selection shaft.

[0008] The gear selection solenoid valve group is assembled on the outer end surface of the gear selection small cover.

[0009] In a possible design, the shift select piston includes: a first shift select piston and a second shift select piston, the first shift select piston surrounds the periphery of the second shift select piston, the second shift select piston is fixedly connected to the first end of the shift select shaft, and the first shift select piston and the second shift select piston can move relative to each other.

[0010] In a possible design, the gear selection execution structure further includes: a gear selection detection component, which is connected to the gear selection cover and the gear selection shaft.

[0011] In one possible design, the gear selection detection assembly includes: a position sensor mounted on the upper end face of the gear selection cover, and a gear selection position indication assembly fixed to the second end of the gear selection shaft, wherein the position sensor is used to determine the gear position selected by the gear selection execution structure by detecting the position of the gear selection position indication assembly.

[0012] In a possible design, the gear selection position indicating assembly includes: a magnetic ring seat fixed to the second end of the gear selection shaft and a magnet fixed to the magnetic ring seat.

[0013] In a possible design, the magnetic ring seat is fixed to the second end of the gear selection shaft through a positioning pin and a nut.

[0014] In a possible design, the first gear selection piston and the second gear selection piston are sealed by a Y-shaped sealing ring in a groove on the second gear selection piston, the first gear selection piston and the small gear selection cover are sealed by a Y-shaped sealing ring in a groove on the first gear selection piston, the second gear selection piston and the small gear selection cover are sealed by a Y-shaped sealing ring in a groove on the second gear selection piston, the second gear selection piston and the small gear selection cover are isolated and supported by a support ring in a groove on the second gear selection piston, and the second gear selection piston and the gear selection shaft are sealed by an O-shaped sealing ring in a groove on the gear selection shaft;

[0015] The shift selector shaft and the shift selector cover are isolated by a shift selector bushing in a first groove on the shift selector cover, and the shift selector shaft and the shift selector cover are sealed by an oil seal in a second groove on the shift selector cover, and the first groove and the second groove are arranged in parallel on the shift selector cover and are located outside the cylinder;

[0016] The cylinder head and the gear selector cover are sealed by a gasket.

[0017] In a second aspect, the present application provides a gearbox, comprising a gear selection execution structure according to the invention content of the first aspect.

[0018] In a possible design, the gearbox further includes: a gear shifting execution structure that is independent of the gear selection execution structure.

[0019] In a third aspect, the present application provides a vehicle, comprising a gearbox according to the invention of the second aspect.

[0020] The present application provides a gear selection execution structure, a gearbox and a vehicle, the structure comprising: a gear selection cover, a gear selection shaft, a cylinder head, a gear selection piston and a gear selection solenoid valve group; the cylinder head is fixed on the gear selection cover, and a cylinder is formed between the cylinder head and the gear selection cover, the first end of the gear selection shaft is located in the cylinder, and the second end of the gear selection shaft is located outside the cylinder, the gear selection piston is arranged in the cylinder, and is fixedly connected to the first end of the gear selection shaft, and the gear selection piston and the gear selection shaft can move together along the axial direction of the gear selection shaft; the gear selection solenoid valve group is assembled on the outer end surface of the gear selection cover. The following technical effects are achieved: the gear selection actuator in the redesigned gearbox can be made independent of the shift actuator, so that it is convenient to arrange the structure in the gearbox, improve the flexibility of the gear selection actuator assembly in the gearbox, and facilitate the later maintenance of the gear selection actuator, and at the same time, it can simplify the structure of the gearbox, optimize the structural layout of the gearbox, thereby reducing the volume of the gearbox, and improving the flexibility and efficiency of the assembly of the whole vehicle; the gear selection limit end faces on both sides of the cylinder are limited, so that the gear selection function of the gear selection execution structure is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0023] Figure 1 A schematic diagram of a gear selection execution structure provided in an embodiment of the present application Figure 1 ;

[0024] Figure 2 A schematic diagram of a gear selection execution structure provided in an embodiment of the present application Figure 2 ;

[0025] Figure 3 A schematic diagram of a gear selection execution structure provided in an embodiment of the present application Figure 3 .

[0026] Reference numerals:

[0027] 10-shift selector cover; 20-shift selector shaft; 30-cylinder cover; 40-shift selector piston; 50-shift selector solenoid valve assembly; 60-cylinder; 70-shift selector detection assembly;

[0028] 101-shift bushing; 102-oil seal; 103-sealing pad;

[0029] 201-O-ring;

[0030] 401-first gear selection piston; 402-second gear selection piston; 403-Y-type sealing ring; 404-support ring;

[0031] 601-first gear selection limit end face; 602-second gear selection limit end face; 603-first return limit end face; 604-second return limit end face;

[0032] 701-position sensor; 702-gear selection position indication assembly; 703-magnetic ring seat; 704-magnet; 705-locating pin; 706-nut. DETAILED DESCRIPTION

[0033] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0034] In the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will appreciate that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference. It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way. In the embodiments of the present application, "at least one" refers to one or more, and "more" refers to two or more.

[0035] It should be noted that the "at..." in the embodiment of the present application can be the instant when a certain situation occurs, or can be a period of time after a certain situation occurs, and the embodiment of the present application does not specifically limit this. In addition, the gear selection execution structure provided in the embodiment of the present application is only used as an example, and a gear selection execution structure can also include more or less content.

[0036] In order to clearly describe the technical solutions of the embodiments of the present application, some terms and technologies involved in the embodiments of the present application are briefly introduced below:

[0037] Gear selection return to empty: refers to the process of the gear selection cylinder returning to the initial position after the gear switching is completed. Its purpose is to prepare for the next gear selection.

[0038] Interference fit: It is a mechanical connection method that achieves a tight connection through the interference between parts. Interference fit allows two parts to fit tightly together during assembly and generates a certain amount of pressure. This fit method relies on the elastic deformation of the parts. During assembly, the parts need to be elastically compressed or expanded. After assembly, the contact pressure between the parts will generate a certain amount of friction, thereby ensuring a firm connection between the mating parts.

[0039] The Automated Mechanical Transmission (AMT) is based on the traditional manual transmission. By adding an electronic control system and a gear selection actuator and a gear shift actuator, the gear selection and shifting process are automated. It includes components such as a gear selection actuator, a gear shift actuator, a TCU, and a variety of sensors. These components work together to realize the vehicle's gear shifting function.

[0040] In the prior art, AMT achieves precise shifting operation through close cooperation between the gear selection actuator and the gear shift actuator. Specifically, the TCU, as the core controller of the entire system, is responsible for receiving signals from various sensors on the vehicle, such as vehicle speed, engine speed, accelerator pedal position, etc., and calculates the best shift timing and target gear position based on these signals and the preset gear shift logic. Then, the TCU sends control instructions to accurately control the gear selection actuator and the gear shift actuator, thereby successfully completing the gear shift action.

[0041] However, since the AMT gearbox usually includes multiple gears, this results in a larger overall size of the gearbox, which in turn increases the difficulty and cost of assembling the gearbox in the vehicle.

[0042] Based on this, the embodiments of the present application propose a gear selection execution structure, a gearbox and a vehicle, which can be used in the field of automobile parts manufacturing, and aim to solve the above technical problems of the prior art, and are used to redesign the gear selection actuator in the gearbox to make it independent of the gear shift actuator, thereby simplifying the structure of the gearbox, optimizing the structural layout of the gearbox, and improving the flexibility and efficiency of assembly. It can also reduce the overall assembly cost of the gearbox and improve production efficiency by simplifying the assembly process of the gearbox, while maintaining or improving the performance and reliability of the gearbox.

[0043] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0044] Figure 1 A schematic diagram of a gear selection execution structure provided in an embodiment of the present application Figure 1 .like Figure 1 As shown, the gear selection execution structure includes:

[0045] A small gear selection cover 10, a gear selection shaft 20, a cylinder head 30, a gear selection piston 40 and a gear selection solenoid valve group 50;

[0046] The cylinder head 30 is fixed on the small gear selection cover 10, and a cylinder 60 is formed between the cylinder head 30 and the small gear selection cover 10. The first end of the gear selection shaft 20 is located in the cylinder 60, and the second end of the gear selection shaft 20 is located outside the cylinder 60. The gear selection piston 40 is arranged in the cylinder 60 and is fixedly connected to the first end of the gear selection shaft 20. The gear selection piston 40 and the gear selection shaft 20 can move together along the axial direction of the gear selection shaft 20.

[0047] The gear selection solenoid valve group 50 is assembled on the outer end surface of the gear selection small cover 10 .

[0048] Specifically, the gear selection cover 10 can be fixedly arranged on the gearbox housing, and the gear selection execution structure in the embodiment of the present application includes the gear selection solenoid valve group 50 on the outer end surface of the gear selection cover 10 and various components inside the gear selection cover 10. The cylinder 60 here refers to the gear selection cylinder inside the gearbox for changing gears.

[0049] The working principle of the gear selection execution structure includes: after receiving the gear selection control instruction sent by the TCU, the gear selection solenoid valve group 50 is energized to inflate the cylinder 60 used for gear selection, so that the gas pressure in the air chamber of the cylinder 60 located on the side of the gear selection piston 40 increases, and the gear selection piston 40 and the gear selection shaft 20 are pushed as a whole from the preset initial position along the axial direction of the gear selection shaft 20, and are limited by the first gear selection limit end face 601 on the inner side of the cylinder 60 and the second gear selection limit end face 602 on the outer side of the cylinder 60 to realize the gear selection function of the gearbox.

[0050] After the gear switching is completed and the gear selection execution structure returns the gear to empty, the TCU can release the gear selection control command to the gear selection solenoid valve group 50, so that the compressed gas filled in the air chamber on one side of the cylinder 60 is released, and the gear selection piston 40 in the cylinder 60 returns to the preset initial position under the action of the reverse air pressure. After the cylinder 60 returns to the initial position, the gear selection solenoid valve group 50 is in a standby state, ready to receive the next gear selection control command sent by the TCU at any time.

[0051] Alternatively, in a possible implementation, when the gear selection execution structure performs gear return, the gear selection solenoid valve group 50 receives the gear return control instruction sent by the TCU, and controls the release of compressed air filled in the air chamber on one side of the cylinder 60 when the gear is selected according to the gear return control instruction, and at the same time (or subsequently) introduces gas into the air chamber on the other side of the cylinder 60, thereby prompting the gear selection piston 40 in the cylinder 60 to move in the opposite direction to a preset starting position.

[0052] The present embodiment provides a gear selection execution structure, which includes: a gear selection cover, a gear selection shaft, a cylinder head, a gear selection piston and a gear selection solenoid valve group; the cylinder head is fixed on the gear selection cover and forms a cylinder with the gear selection cover, the first end of the gear selection shaft is located in the cylinder, and the second end of the gear selection shaft is located outside the cylinder, the gear selection piston is arranged in the cylinder and fixedly connected to the first end of the gear selection shaft, and the gear selection piston and the gear selection shaft can move together along the axial direction of the gear selection shaft; the gear selection solenoid valve group is assembled on the outer end face of the gear selection cover.

[0053] The following technical effects are achieved: the gear selection actuator in the redesigned gearbox can be made independent of the gear shift actuator, thereby facilitating the arrangement of the structure in the gearbox, improving the flexibility of assembling the gear selection actuator in the gearbox, and facilitating the later maintenance of the gear selection actuator, while also simplifying the structure of the gearbox, optimizing the structural layout of the gearbox, thereby reducing the size of the gearbox, and improving the flexibility and efficiency of vehicle assembly; the gear selection limit end faces on both sides of the cylinder are used for limiting, so as to achieve the function of the gear selection actuator structure to select gears.

[0054] The gear selection piston 40 and other components in the gear selection execution structure are introduced in detail below.

[0055] Figure 2 A schematic diagram of a gear selection execution structure provided in an embodiment of the present application Figure 2 .like Figure 2 As shown, the shift select piston 40 includes: a first shift select piston 401 and a second shift select piston 402, the first shift select piston 401 surrounds the periphery of the second shift select piston 402, the second shift select piston 402 is fixedly connected to the first end of the shift select shaft 20, and the first shift select piston 401 and the second shift select piston 402 can move relative to each other.

[0056] Specifically, the second gear selection piston 402 can be fixedly connected to the first end of the gear selection shaft 20 by bolts (such as hexagon socket bolts). When the gear selection execution structure completes the gear switching and performs the gear return operation, the gear selection solenoid valve group 50 simultaneously inflates the two air chambers of the cylinder 60 on both sides of the gear selection piston 40 according to the gear return control instruction sent by the TCU, so that the first gear selection piston 401 and the second gear selection piston 402 move toward each other, and the first gear selection piston 401 and the second gear selection piston 402 are mutually limited by the first return limit end face 603 and the second return limit end face 604, so as to realize the gear return function. Among them, a first return limit end face 603 is arranged between the first shift select piston 401 and the shift select cover 10, and a second return limit end face 604 is arranged between the first shift select piston 401 and the second shift select piston 402. The first return limit end face 603 and the second return limit end face 604 can both be perpendicular to the axial direction of the shift select shaft 20.

[0057] In a possible implementation, the gear selection execution structure further includes: a gear selection detection component 70 , which is connected to the gear selection cover 10 and the gear selection shaft 20 .

[0058] Through the gear selection detection component 70, it can be determined whether the gear is selected in place when the gear selection execution structure performs the gear selection operation.

[0059] Furthermore, the gear selection detection component 70 includes: a position sensor 701 mounted on the upper end surface of the gear selection cover 10, and a gear selection position indicating component 702 fixed to the second end of the gear selection shaft 20, and the position sensor 701 is used to determine the gear position selected by the gear selection execution structure by detecting the position of the gear selection position indicating component 702.

[0060] Furthermore, the gear selection position indicating assembly 702 includes: a magnetic ring seat 703 fixed to the second end of the gear selection shaft 20 and a magnet 704 fixed to the magnetic ring seat 703 .

[0061] Specifically, the position sensor 701 can be a Hall sensor or a magnetoresistive sensor, etc., and no specific limitation is made here. The magnetic ring seat 703 can be provided with a groove at one end facing the position sensor 701, and the magnet 704 can be glued in the groove of the magnetic ring seat 703 by glue. In the process of the gear selection execution structure selecting gears, the position sensor 701 can determine the position of the magnet 704 by real-time monitoring of the magnetic field changes of the magnet 704, and feed back the position information of the magnet 704 to the TCU. Through this feedback mechanism, the TCU can accurately judge the gear position currently selected by the gear selection execution structure, and then determine whether the gear selection action is completed, so as to further adjust the gear selection strategy as needed.

[0062] Furthermore, the magnetic ring seat 703 is fixed to the second end of the gear selection shaft 20 by means of a positioning pin 705 and a nut 706. Therefore, the magnet 704 and the magnetic ring seat 703 are integrally formed with the gear selection shaft 20 and can move along the axial direction of the gear selection shaft 20 together with the gear selection shaft 20, thereby facilitating the position sensor 701 to monitor the real-time gear position of the gear selection actuator for gear selection.

[0063] Furthermore, the first gear selection piston 401 and the second gear selection piston 402 are sealed by the Y-shaped sealing ring 403 in the groove on the second gear selection piston 402, the first gear selection piston 401 and the gear selection small cover 10 are sealed by the Y-shaped sealing ring 403 in the groove on the first gear selection piston 401, and the second gear selection piston 402 and the gear selection small cover 10 are sealed by the Y-shaped sealing ring 403 in the groove on the second gear selection piston 402. Since the Y-shaped sealing ring 403 is suitable for sealing the gap between structures with relative motion, the Y-shaped sealing ring 403 is used to seal between the first gear selection piston 401 and the second gear selection piston 402, between the first gear selection piston 401 and the gear selection small cover 10, and between the second gear selection piston 402 and the gear selection small cover 10, so as to ensure that the two air chambers of the cylinder 60 located on both sides of the piston 40 are in an isolated state and will not leak air to each other, thereby ensuring the accuracy of the gear selection operation of the gear selection actuator.

[0064] The second gear selection piston 402 and the gear selection cover 10 are isolated and supported by a support ring 404 in the groove on the second gear selection piston 402. The support ring extends out of the groove to support the second gear selection piston so that there is a gap between the second gear selection piston and the gear selection cover. In this way, when the second gear selection piston and the gear selection cover move relative to each other, the gear selection cover rubs against the support ring instead of the second gear selection piston, thereby avoiding direct friction between the second gear selection piston and the gear selection cover. The support ring is made of wear-resistant material. The second gear selection piston 402 and the gear selection shaft 20 are sealed by an O-ring 201 in the groove on the gear selection shaft. By using an O-ring 201 between the second gear selection piston 402 and the gear selection shaft 20, a gap can be avoided between the second gear selection piston 402 and the gear selection shaft 20 due to poor sealing, thereby avoiding the gas in the two air chambers on both sides of the piston 40 from flowing mutually.

[0065] The shift selector shaft 20 and the shift selector cover 10 are isolated by a shift selector bushing 101 in a first groove on the shift selector cover 10, and the shift selector shaft 20 and the shift selector cover 10 are sealed by an oil seal 102 in a second groove on the shift selector cover, and the first groove and the second groove are arranged in parallel on the shift selector cover 10 and are located outside the cylinder 60. The shift selector bushing 101 is used to protect the shift selector shaft 20 and the shift selector cover 10 to avoid damage caused by direct friction between the shift selector shaft 20 and the shift selector cover 10, and the oil seal 102 is used to support the shift selector shaft 20 and seal the cylinder 60 to prevent the gas in the cylinder 60 from overflowing from the gap between the shift selector shaft 20 and the shift selector cover 10, and to prevent the oil outside the cylinder 60 from entering the inside of the cylinder 60.

[0066] Furthermore, the shift selector bushing 101 and the oil seal 102 are interference fit to further ensure the air tightness of the cylinder 60 .

[0067] The cylinder head 30 and the small gear selection cover 10 are sealed by a sealing gasket 103. The cylinder head 30 and the sealing gasket 103 can be fixed on the small gear selection cover 10 by bolts, and the further sealing of the cylinder 60 can be achieved by the sealing gasket 103.

[0068] Figure 3 A schematic diagram of a gear selection execution structure provided in an embodiment of the present application Figure 3 . Figure 3 The figure is a schematic diagram of the overall appearance of the gear selection execution structure. Figure 3 As shown, the gear selection solenoid valve group 50 and the position sensor 701 are both assembled on the outer end surface of the gear selection cover 10 .

[0069] The embodiment of the present application provides a gear selection execution structure, which realizes the gear return function by limiting the mutual position between the first gear selection piston and the second gear selection piston through the first return limit end face and the second return limit end face; the position of the magnet is determined by monitoring the magnetic field change of the magnet in real time through the position sensor, and then the gear position currently selected by the gear selection execution structure is judged, and whether the gear selection action is completed is determined, thereby solving the problem of how to determine whether the gear selection is successful; the magnet and the magnetic ring seat are formed into an integral whole with the gear selection shaft, and can move along the axial direction of the gear selection shaft with the gear selection shaft, so that the position sensor can monitor the position of the gear of the gear selection actuator in real time by monitoring the position of the magnet in real time; between the first gear selection piston and the second gear selection piston, between the first gear selection piston and the gear selection cover, and Y-shaped sealing rings are used to seal between the second gear selection piston and the gear selection cover, ensuring that the two air chambers on both sides of the cylinder piston are isolated and will not leak air to each other, thereby ensuring the accuracy of the gear selection operation of the gear selection actuator; by using an O-shaped sealing ring between the second gear selection piston and the gear selection shaft, a gap due to poor sealing between the second gear selection piston and the gear selection shaft is avoided, thereby preventing the gas in the two air chambers on both sides of the piston from circulating with each other; by using a gear selection bushing and an oil seal between the gear selection shaft and the gear selection cover, the gas in the cylinder is prevented from overflowing from the gap between the gear selection shaft and the gear selection cover, and the oil outside the cylinder is prevented from entering the interior of the cylinder; by using a sealing gasket between the cylinder head and the gear selection cover, further sealing of the cylinder is achieved.

[0070] An embodiment of the present application also provides a gearbox, comprising a gear selection execution structure in the above embodiment.

[0071] Furthermore, the gearbox also includes: a gear shifting execution structure that is independent of the gear selection execution structure. In the gearbox, the gear selection execution mechanism and the gear shifting execution mechanism are independent of each other, which improves the flexibility of assembling the gear selection execution mechanism and the gear shifting execution mechanism in the gearbox and facilitates the later maintenance of the gearbox.

[0072] An embodiment of the present application also provides a vehicle, comprising a gearbox in the above embodiment.

[0073] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A gear selection execution structure, characterized in that: include: Shift selector cover, shift selector shaft, cylinder cover, shift selector piston and shift selector solenoid valve assembly; The cylinder head is fixed on the small gear selection cover, and a cylinder is formed between the cylinder head and the small gear selection cover. The first end of the gear selection shaft is located in the cylinder, and the second end of the gear selection shaft is located outside the cylinder. The gear selection piston is arranged in the cylinder and fixedly connected to the first end of the gear selection shaft. The gear selection piston and the gear selection shaft can move together along the axial direction of the gear selection shaft. The gear selection solenoid valve group is assembled on the outer end surface of the gear selection small cover.

2. The gear selection execution structure according to claim 1, characterized in that: The shift select piston includes: a first shift select piston and a second shift select piston, wherein the first shift select piston surrounds the periphery of the second shift select piston, the second shift select piston is fixedly connected to the first end of the shift select shaft, and the first shift select piston and the second shift select piston can move relative to each other.

3. The gear selection execution structure according to claim 1, characterized in that: Also includes: A gear selection detection component is connected to the gear selection cover and the gear selection shaft.

4. The gear selection execution structure according to claim 3, characterized in that: The gear selection detection component includes: a position sensor mounted on the upper end surface of the gear selection cover, and a gear selection position indication component fixed to the second end of the gear selection shaft, wherein the position sensor is used to determine the gear position selected by the gear selection execution structure by detecting the position of the gear selection position indication component.

5. The gear selection execution structure according to claim 4, characterized in that: The gear selection position indicating assembly includes: a magnetic ring seat fixed to the second end of the gear selection shaft and a magnet fixed on the magnetic ring seat.

6. The gear selection execution structure according to claim 5, characterized in that: The magnetic ring seat is fixed to the second end of the gear selection shaft through a positioning pin and a nut.

7. The gear selection execution structure according to claim 2, characterized in that: The first gear selection piston and the second gear selection piston are sealed by a Y-shaped sealing ring in a groove on the second gear selection piston, the first gear selection piston and the small gear selection cover are sealed by a Y-shaped sealing ring in a groove on the first gear selection piston, the second gear selection piston and the small gear selection cover are sealed by a Y-shaped sealing ring in a groove on the second gear selection piston, the second gear selection piston and the small gear selection cover are isolated and supported by a support ring in a groove on the second gear selection piston, and the second gear selection piston and the gear selection shaft are sealed by an O-shaped sealing ring in a groove on the gear selection shaft; The shift select shaft and the shift select small cover are isolated by a shift select bushing in a first groove on the shift select small cover, and the shift select shaft and the shift select small cover are sealed by an oil seal in a second groove on the shift select small cover, the first groove and the second groove are arranged in parallel on the shift select small cover and are located outside the cylinder; The cylinder head and the gear selection cover are sealed by a sealing gasket.

8. A gearbox, characterized in that: It comprises a gear selection execution structure as described in any one of claims 1 to 7.

9. The gearbox according to claim 8, characterized in that: The gearbox further comprises: a gear shifting execution structure which is independent of the gear selection execution structure.

10. A vehicle, characterized in that: Comprising a gearbox as claimed in claim 8 or 9.

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