CN219796071U - Gear shifting structure and transmission - Google Patents

Abstract

The utility model discloses a gear shifting structure and a transmission, wherein the gear shifting structure is applied to the transmission and comprises the following components: the base is provided with a gear selecting and shifting block which is used for shifting the shifting fork to move; the valve plate is arranged on the base, a gear selecting space and a gear shifting space are arranged on the valve plate, a gear selecting shaft is arranged in the gear selecting space, a gear shifting shaft is arranged in the gear shifting space, and the gear selecting shaft is connected with a gear selecting shifting block through the gear shifting shaft; the power assembly is communicated with the gear selecting space and supplies power medium, and the power assembly is communicated with the gear shifting space and supplies power medium so as to respectively drive the gear selecting shaft and the gear shifting shaft to move; the gear selecting electromagnetic valve is arranged between the gear selecting space and the power component so as to control the power medium; a shift solenoid valve disposed between the shift space and the power assembly to control the power medium; wherein, power component locates the base, and select shelves solenoid valve and gear shifting solenoid valve locate the valve plate. The utility model improves the integration level of the gear shifting structure.

Description

Gear shifting structure and transmission

Technical Field

The utility model relates to the technical field of speed changing devices, in particular to a gear shifting structure and a speed changer.

Background

The vehicle transmission is complex in structure, the gear selecting cylinder, the gear shifting cylinder, the gear selecting electromagnetic valve and the gear shifting electromagnetic valve are respectively arranged on the transmission shell, and when the vehicle transmission is integrally assembled, the gear selecting cylinder, the gear shifting cylinder, the gear selecting electromagnetic valve and the gear shifting electromagnetic valve are required to be independently arranged on the larger transmission shell respectively, so that the integration level is low.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a gear shifting structure, and the integration level is improved.

According to a shift structure of an embodiment of the present utility model, the shift structure is applied to a transmission, and the shift structure includes: the base is provided with a gear selecting and shifting block which is used for shifting the shifting fork to move; the valve plate is arranged on the base, a gear selecting space and a gear shifting space are arranged on the valve plate, a gear selecting shaft is arranged in the gear selecting space, a gear shifting shaft is arranged in the gear shifting space, and the gear selecting shaft and the gear shifting shaft are connected with the gear selecting shifting block; the power assembly is communicated with the gear selecting space and supplies power media, and the power assembly is communicated with the gear shifting space and supplies the power media so as to drive the gear selecting shaft and the gear shifting shaft to move respectively; a gear selection electromagnetic valve provided between the gear selection space and the power assembly to control the power medium supplied to the gear selection space; a shift solenoid valve provided between the shift space and the power assembly to control the power medium supplied to the shift space; the power assembly is arranged on the base, and the gear selecting electromagnetic valve and the gear shifting electromagnetic valve are arranged on the valve plate.

According to the gear shifting structure provided by the embodiment of the utility model, the valve plate is arranged on the base, the power assembly is arranged on the base, and the gear selecting electromagnetic valve and the gear shifting electromagnetic valve are arranged on the valve plate, so that the power assembly, the gear selecting electromagnetic valve and the gear shifting electromagnetic valve are concentrated on the base and the valve plate, and the integration level is improved.

In some embodiments, the shift select solenoid valve is located on the same side of the valve plate as the shift select solenoid valve.

In some embodiments, the gear selection solenoid valve is located on a different side of the valve plate than the power assembly.

In some embodiments, the gear selection solenoid valve and the power assembly are disposed on opposite sides of the valve plate.

In some embodiments, the power assembly comprises: the power base is arranged on the base; the gear shifting device comprises an oil storage tank and a driving pump, wherein the oil storage tank and the driving pump are arranged on the power base, the oil storage tank is communicated with the gear selecting space, the oil storage tank is communicated with the gear shifting space, and the driving pump pumps power medium in the oil storage tank to the gear selecting space and the gear shifting space.

In some embodiments, the driving pump is disposed at the lower side of the power base, and the height of the oil storage tank is higher than the height of the driving pump.

In some embodiments, the shift solenoid valve is disposed on a side of the select solenoid valve facing the power assembly; and/or the number of the shifting electromagnetic valves is two, and the two shifting electromagnetic valves are arranged in parallel.

A transmission according to an embodiment of the present utility model includes: a transmission body; and the gear shifting structure is arranged on the transmission body and is the gear shifting structure.

According to the transmission provided by the embodiment of the utility model, by applying the gear shifting structure, the integration level is improved, and the whole occupied space is reduced.

In some embodiments, the transmission further comprises: the clutch slave cylinder is communicated with the power assembly, and is at least partially arranged on one side of the valve plate, which is away from the power assembly.

In some embodiments, a clutch electromagnetic valve is arranged between the clutch slave cylinder and the power assembly, and the clutch electromagnetic valve is arranged on the valve plate and is arranged side by side with the gear selecting electromagnetic valve and the gear shifting electromagnetic valve.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a shift structure according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the cooperation of a base, a selector block, a selector shaft and a shift shaft in an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a portion of a transmission according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a portion of a transmission according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a portion of a transmission according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a power assembly according to an embodiment of the present utility model.

Reference numerals:

100. a shift structure;

10. a base; 11. selecting a gear shifting block;

20. a valve plate; 211. selecting a gear shaft; 221. a shift shaft; 23. a shift position sensor; 25. a gear selection position sensor; 241. a pressure sensor;

30. a power assembly; 31. a power base; 32. an oil storage tank; 33. driving a pump;

40. a gear selecting electromagnetic valve; 50. a shift solenoid valve;

1000. a transmission; 200. a transmission body; 300. a clutch slave cylinder; 301. a clutch solenoid valve; 302. a tappet; 400. the input shaft rotating speed sensor is connected; 500. and the output shaft rotating speed sensor is connected.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly, for distinguishing between the descriptive features, and not sequentially, and not lightly.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The following describes a shift structure 100 according to an embodiment of the present utility model with reference to the accompanying drawings.

As shown in fig. 1 and 2, according to a shift structure 100 of an embodiment of the present utility model, the shift structure 100 is applied to a transmission, and the shift structure 100 includes: base 10, valve plate 20, power assembly 30, gear selection solenoid valve 40, and shift solenoid valve 50.

The base 10 is provided with a gear selecting and shifting block 11, and the gear selecting and shifting block 11 is used for shifting and shifting the shifting fork to move.

The shifting fork is a component on the vehicle transmission and shifts the intermediate speed changing wheel to change the input/output rotation speed ratio

The valve plate 20 is arranged on the base 10, a gear selecting space and a gear shifting space are arranged on the valve plate 20, a gear selecting shaft 211 is arranged in the gear selecting space, a gear shifting shaft 221 is arranged in the gear shifting space, and the gear selecting shaft 211 is connected with the gear shifting shaft 221 to select the gear shifting block 11.

The power assembly 30 communicates with the gear selecting space and supplies a power medium, and the power assembly 30 communicates with the gear shifting space and supplies a power medium to drive the gear selecting shaft 211 and the gear shifting shaft 221 to move, respectively. That is, the power assembly 30 supplies power medium to the gear selecting space and the gear shifting space, respectively, driving the gear selecting shaft 211 and the gear shifting shaft 221 to move.

A gear selection solenoid valve 40 is provided between the gear selection space and the power module 30 to control the power medium supplied to the gear selection space. That is, the shift select solenoid valve 40 can control the movement of the shift select shaft 211, indirectly controlling the movement of the shift select dial 11.

A shift solenoid valve 50 is provided between the shift space and the power assembly 30 to control the power medium supplied to the shift space. That is, the shift solenoid valve 50 can control the movement of the shift shaft 221, indirectly controlling the movement of the shift block 11.

Wherein, power assembly 30 is disposed on base 10, and gear selecting solenoid valve 40 and gear shifting solenoid valve 50 are disposed on valve plate 20.

In the related art, a gear selecting cylinder, a gear shifting cylinder, a gear selecting electromagnetic valve and a gear shifting electromagnetic valve are respectively arranged on a transmission shell, and when the gear selecting cylinder, the gear shifting cylinder, the gear selecting electromagnetic valve and the gear shifting electromagnetic valve are integrally assembled, the gear selecting cylinder, the gear shifting electromagnetic valve and the gear shifting electromagnetic valve are required to be independently installed on a larger transmission shell respectively, so that the integration level is low, and the installation process is troublesome.

The utility model is provided with the base 10 and the valve plate 20, and integrates the power assembly 30, the gear selecting electromagnetic valve 40 and the gear shifting electromagnetic valve 50 on the base, thus improving the integration level, and it can be understood that after the power assembly 30, the gear selecting electromagnetic valve 40 and the gear shifting electromagnetic valve 50 are installed on the smaller base 10 and the valve plate 20, the power assembly 30, the gear selecting electromagnetic valve 40, the gear shifting electromagnetic valve 50, the base 10 and the valve plate 20 are integrally installed on the larger transmission body 200, thereby facilitating the installation.

According to the gear shifting structure 100 of the embodiment of the utility model, the valve plate 20 is arranged on the base 10, the power assembly 30 is arranged on the base 10, the gear selecting electromagnetic valve 40 and the gear shifting electromagnetic valve 50 are arranged on the valve plate 20, so that the power assembly 30, the gear selecting electromagnetic valve 40 and the gear shifting electromagnetic valve 50 are concentrated on the base 10 and the valve plate 20, the integration level is improved, and meanwhile, the assembly of the gear shifting structure 100 is facilitated.

In some embodiments, the power medium is hydraulic oil, and the power assembly 30 inputs the hydraulic oil into the gear selecting space and the gear shifting space, and drives the gear selecting shaft 211 and the gear shifting shaft 221 to move by using the pressure of the hydraulic oil.

In other embodiments, the power medium is air, and the power assembly 30 inputs air into the gear selecting space and the gear shifting space, and drives the gear selecting shaft 211 and the gear shifting shaft 221 to move by using the pressure of the compressed air.

As shown in fig. 1, 3 and 4, in some embodiments, gear selection solenoid valve 40 is located on the same side of valve plate 20 as gear shifting solenoid valve 50. By arranging the gear selection electromagnetic valve 40 and the gear shifting electromagnetic valve 50 on the same side of the valve plate 20, simultaneous observation of the gear selection electromagnetic valve 40 and the gear shifting electromagnetic valve 50 is facilitated, and unified installation of the gear selection electromagnetic valve 40 and the gear shifting electromagnetic valve 50 is facilitated.

As shown in fig. 1, 3, and 4, in some embodiments, gear selection solenoid valve 40 is located on a different side of valve plate 20 than power assembly 30. The gear-selecting electromagnetic valve 40 and the power assembly 30 are arranged on different sides of the valve plate 20, so that the space around the valve plate 20 is fully utilized, the flat space is adapted, and the minimum occupation of the space is realized.

It should be noted that, in part of the vehicle type, the present utility model is limited by the effects of the related systems such as the cargo box of the whole vehicle, the chassis frame, the engine system, the exhaust system, the power line, the ground clearance, the high voltage wire harness of the motor, etc., the middle reserved space is relatively flat, and the gear selecting electromagnetic valve 40 and the power assembly 30 are arranged on different sides of the valve plate 20, so that the present utility model adapts to the flat reserved space.

As shown in fig. 1, 3, and 4, in some embodiments, shift solenoid valve 50 is located on a different side of valve plate 20 than power assembly 30.

As shown in fig. 1, 3 and 4, in some embodiments, gear selection solenoid valve 40 is disposed adjacent to and on either side of valve plate 20 from power assembly 30. By disposing gear selection solenoid valve 40 and power assembly 30 on both sides adjacent to valve plate 20, the space around transmission body 200 is further fully utilized.

As shown in fig. 1, 3, and 4, in some embodiments, shift solenoid valve 50 is disposed adjacent to and on either side of valve plate 20 from power assembly 30.

As shown in fig. 3, 6, in some embodiments, the power assembly 30 includes: a power base 31, an oil reservoir 32 and a drive pump 33.

The power base 31 is provided on the base 10.

The oil storage tank 32 and the driving pump 33 are arranged on the power base 31, the oil storage tank 32 is communicated with the gear selecting space, the oil storage tank 32 is communicated with the gear shifting space, and the driving pump 33 pumps the power medium in the oil storage tank 32 to the gear selecting space and the gear shifting space. By further integrating the oil reservoir 32 and the drive pump 33 on the base 10, the integration level is improved, and the shift structure 100 itself has a drive device, and a longer external flow path is not required, thereby simplifying the structure.

As shown in fig. 3, in some embodiments, the drive pump 33 is disposed on the underside of the power base 31, and the reservoir 32 is at a higher elevation than the drive pump 33. That is, the reservoir 32 is higher than the drive pump 33, facilitating the output of hydraulic oil in the reservoir 32.

As shown in fig. 1, 3 and 4, in some embodiments, a shift solenoid valve 50 is provided on a side of the shift solenoid valve 40 facing the power assembly 30. By disposing the shift solenoid valve 50 on the side of the shift solenoid valve 40 facing the power assembly 30, the shift solenoid valves are arranged in order.

As shown in fig. 1, 3 and 4, in other embodiments, the number of shift solenoid valves 50 is two, and the two shift solenoid valves 50 are arranged in parallel. By disposing two shift solenoid valves 50 in parallel, the uniformity is further improved.

Specifically, the two shift solenoid valves 50 supply high-pressure hydraulic oil in two directions, so that the shift shaft 221 is cyclically reciprocated, effecting shift actions (in-gear, out-of-gear).

As shown in fig. 1, 3 and 4, in other embodiments, the shift solenoid valve 50 is disposed on a side of the gear selection solenoid valve 40 facing the power assembly 30, and two shift solenoid valves 50 are disposed in parallel with each other. The gear shifting electromagnetic valve 50 is arranged on the side, facing the power assembly 30, of the gear selecting electromagnetic valve 40, and meanwhile, the two gear shifting electromagnetic valves 50 are arranged in parallel, so that the uniformity is further improved.

As shown in fig. 1, 3 and 4, wherein both shift solenoid valves 50 are on the side of the select solenoid valve 40 facing the power assembly 30.

As shown in fig. 1, 3 and 4, in some embodiments, a shift position sensor 23 is provided on the valve plate 20 for detecting displacement of the shift shaft 221, determining a relative position of the shift shaft 221, and further determining a gear condition, and the shift position sensor 23 is provided in the middle of the valve body near the shift solenoid valve 50.

As shown in fig. 1, 3 and 4, in some embodiments, a gear position sensor 25 is provided on the valve plate 20, for detecting the displacement of the gear selecting shaft 211, determining the relative position of the gear selecting shaft 211, and further determining the gear condition,

as shown in fig. 5, a transmission 1000 according to an embodiment of the present utility model includes: the transmission body 200 and the shift structure 100.

The shift structure 100 is provided in the transmission body 200, and the shift structure 100 is the shift structure 100 described above.

That is, the base 10, the valve plate 20, the power assembly 30, the gear selection solenoid valve 40 and the shift solenoid valve 50 are all located outside the transmission body 200, improving the integration level.

According to the transmission 1000 of the embodiment of the present utility model, by applying the above-mentioned shift structure 100, the integration level is improved, and the overall occupied space is reduced.

In some embodiments, the transmission body 200 is a manual transmission body, that is, the present utility model adds the gear shifting structure 100 on the basis of the manual transmission body, so as to combine into the automatic transmission 1000, fully utilize the existing manual transmission body, and improve the utilization rate.

In some embodiments, the transmission 1000 further includes: clutch slave cylinder 300, clutch slave cylinder 300 communicates power pack 30, and clutch slave cylinder 300 is at least partially disposed on a side of valve plate 20 facing away from power pack 30. By providing clutch cylinder 300 at least partially on the side of valve plate 20 facing away from moving assembly 30, the space around valve plate 20 is fully utilized.

In some embodiments, a clutch solenoid valve 301 is disposed between the clutch slave cylinder 300 and the power assembly 30, and the clutch solenoid valve 301 is disposed on the valve plate 20 and side by side with the gear selection solenoid valve 40 and the shift solenoid valve 50. By arranging the clutch solenoid valve 301, the gear selecting solenoid valve 40 and the gear shifting solenoid valve 50 side by side, the integration level is further improved, and the solenoid valves are orderly arranged.

In some embodiments, lifters 302 are provided on the clutch cylinder 300 to convert high-pressure hydraulic pressure provided by the power assembly 30 into mechanical energy to power the clutch.

In some embodiments, a main oil gallery is provided on valve plate 20 for transmitting hydraulic oil, and a pressure sensor 241 is provided in the main oil gallery for feeding back Tcu (Transmission Control Unit, automatic transmission control unit) in real time.

In some embodiments, the transmission 1000 further includes: the input shaft rotation speed sensor 400 and the output shaft rotation speed sensor 500 are connected, and the input shaft rotation speed sensor 400 and the output shaft rotation speed sensor 500 are both branch harnesses in the Tcu main harness.

One specific embodiment of the transmission 1000 of the present utility model is described below in conjunction with fig. 1-5.

A transmission 1000 includes: the transmission comprises a transmission body 200, a gear shifting structure 100, a clutch slave cylinder 300, a connecting input shaft rotation speed sensor 400 and a connecting output shaft rotation speed sensor 500.

The shift structure 100 is disposed above the transmission body 200. The shift structure 100 includes: base 10, valve plate 20, power assembly 30, gear selection solenoid valve 40, and shift solenoid valve 50. The directions of the upper, lower, left and right directions are referred to in fig. 5.

Power assembly 30: to provide a power source (to provide high pressure hydraulic oil) for valve plate 20, disposed on the right side of valve plate 20.

Two shift solenoid valves 50: according to the MT shift structure feature, by controlling the switching of the shift solenoid valve 50, high-pressure hydraulic oil in both directions is supplied to realize shift actions (in-gear, out-of-gear), which are disposed in the lower right corner of the valve plate 20.

Shift position sensor 23: detecting displacement of the shift shaft 221, judging the relative position of the MT shift shaft 221, and further judging gear conditions; according to the existing space, it is disposed at a position near the shift solenoid valve 50 in the middle of the valve plate 20.

The branch harness connecting the output shaft rotation speed sensor 500 and the input shaft rotation speed sensor 400, which are both Tcu main harnesses, is arranged on the right side of the transmission 1000.

Gear selection solenoid valve 40: and through opening and closing, gear selection high-pressure hydraulic oil is provided for the MT, so that gear selection action is realized.

Clutch solenoid valve 301: by opening and closing, high-pressure hydraulic oil is provided to the clutch slave cylinder 300 and the tappet 302 to provide power for clutch disengagement; is disposed on the left side of valve plate 20.

Clutch slave cylinder 300 and tappet 302: converting the high pressure hydraulic pressure provided by the power assembly 30 into mechanical energy to power the clutch; according to the MT construction, is arranged on the left side of the transmission body 200.

Valve plate 20, providing a mounting fixture for other components; is fixed to the upper end of the transmission body 200.

Pressure sensor 241: monitoring the pressure of a main oil duct and feeding back Tcu in real time; is disposed on the left side of valve plate 20.

In the related art, the AMT has typical characteristics of automatic gear selection, automatic gear shifting and automatic clutch, and in order to meet the three basic functions, each part is separately designed, occupies a large space, greatly influences peripheral systems, and the problems of dynamic interference, heat radiation and the like can influence the service life of products, NVH performance and customer satisfaction.

The utility model relies on the optimized structural arrangement of the existing manual gear speed changer bodies of 5MT (5 s 8) and 6MT (6 s 500), integrates design, electromagnetic valves and sensors, and realizes small occupied space and light weight (the total weight is only 9.5 Kg) on the premise of ensuring basic functions.

Other constructions and operations of the shift structure 100 according to embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, reference to the term "embodiment," "example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A shift structure (100), characterized in that the shift structure (100) is applied to a transmission, the shift structure (100) comprising:

the gear selecting and shifting device comprises a base (10), wherein a gear selecting and shifting block (11) is arranged on the base (10), and the gear selecting and shifting block (11) is used for shifting a shifting fork to move;

the valve plate (20), the valve plate (20) is located the base (10), be equipped with gear selection space and gear shift space on the valve plate (20), be equipped with gear selection axle (211) in the gear selection space, be equipped with gear shift axle (221) in the gear shift space, gear selection axle (211) and gear shift axle (221) are connected gear selection shifting block (11);

a power assembly (30), wherein the power assembly (30) is communicated with the gear selection space and supplies power medium, and the power assembly (30) is communicated with the gear shifting space and supplies the power medium to respectively drive the gear selection shaft (211) and the gear shifting shaft (221) to move;

a gear selection electromagnetic valve (40), wherein the gear selection electromagnetic valve (40) is arranged between the gear selection space and the power assembly (30) so as to control the power medium supplied to the gear selection space;

a shift solenoid valve (50), the shift solenoid valve (50) being provided between the shift space and the power assembly (30) to control the power medium supplied to the shift space;

the power assembly (30) is arranged on the base (10), and the gear selecting electromagnetic valve (40) and the gear shifting electromagnetic valve (50) are arranged on the valve plate (20).

2. The shift structure (100) according to claim 1, wherein the shift select solenoid valve (40) is located on the same side of the valve plate (20) as the shift solenoid valve (50).

3. The shift structure (100) of claim 2, wherein the gear selection solenoid valve (40) is located on a different side of the valve plate (20) than the power assembly (30).

4. A gear shift structure (100) according to claim 3, wherein the gear selection solenoid valve (40) and the power assembly (30) are provided on both sides adjacent to the valve plate (20).

5. The shift structure (100) according to claim 1, wherein the power assembly (30) includes:

a power base (31), wherein the power base (31) is arranged on the base (10);

the gear shifting device comprises an oil storage tank (32) and a driving pump (33), wherein the oil storage tank (32) and the driving pump (33) are arranged on a power base (31), the oil storage tank (32) is communicated with a gear selecting space, the oil storage tank (32) is communicated with a gear shifting space, and the driving pump (33) pumps power medium in the oil storage tank (32) to the gear selecting space and the gear shifting space.

6. The gear shift structure (100) according to claim 5, wherein the drive pump (33) is provided on the lower side of the power base (31), and the oil reservoir (32) is located at a higher level than the drive pump (33).

7. The shift structure (100) according to claim 1, wherein the shift solenoid valve (50) is provided on a side of the select solenoid valve (40) facing the power assembly (30);

and/or the number of the shifting electromagnetic valves (50) is two, and the two shifting electromagnetic valves (50) are arranged in parallel.

8. A transmission (1000), characterized by comprising:

a transmission body (200);

a gear shift structure (100), the gear shift structure (100) being provided to the transmission body (200), the gear shift structure (100) being a gear shift structure (100) according to any one of claims 1 to 7.

9. The transmission (1000) of claim 8, wherein the transmission (1000) further comprises: the clutch slave cylinder (300), clutch slave cylinder (300) intercommunication power pack (30), clutch slave cylinder (300) are located at least in part valve plate (20) face away from one side of power pack (30).

10. The transmission (1000) according to claim 9, wherein a clutch solenoid valve (301) is provided between the clutch slave cylinder (300) and the power module (30), and the clutch solenoid valve (301) is provided in the valve plate (20) and is provided side by side with the gear selection solenoid valve (40) and the shift solenoid valve (50).