Gas circuit structure for improving gear shifting performance of AMT (automated mechanical transmission), AMT and automobile

Abstract

The utility model discloses an air circuit structure for improving the gear shifting performance of an AMT (automated mechanical transmission), the AMT and an automobile, the structure comprises a clutch shell, a gear shifting executing mechanism and an air filter are arranged on the clutch shell, and the gear shifting executing mechanism is connected with the air filter; the front end cover shell is arranged on the clutch shell, a valve bank, a brake and a clutch executing mechanism are installed on the front end cover shell, the valve bank and the brake are located at the end of the front end cover shell, a clutch electromagnetic valve and a brake electromagnetic valve are arranged in the valve bank, and the valve bank and the clutch executing mechanism are connected through a third connecting gas circuit; the first connecting gas circuit is arranged in the clutch shell, one end of the first connecting gas circuit is connected with the gear shifting executing mechanism, and the other end of the first connecting gas circuit is connected with the front end cover shell; and the second connecting gas circuit is arranged on the front end cover shell. The electromagnetic valve is separated from the actuating mechanism body to form the independent valve group, so that the gas circuit response path is remarkably shortened, and the gear shifting performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to AMT transmission gas path technical field, concretely relates to a kind of gas path structure for improving the gear shifting performance of AMT transmission, AMT transmission and automobile. BACKGROUND

[0002] Current Chinese market, AMT market penetration rate is higher and higher, more customers choose to carry AMT vehicle, with the gradual increase of AMT recognition and the continuous improvement of driver's requirement for vehicle comfort, economy, in future domestic commercial vehicle market, AMT transmission will gradually replace manual transmission.

[0003] With the intensification of domestic AMT market competition, customer's requirement for the gear shifting performance of AMT transmission is higher and higher, especially in the quick response of gear shifting process, i.e. when needing to drop or raise, can be quickly shifted to appropriate gear, which puts forward higher requirement to transmission enterprise and vehicle enterprise, to ensure the quickness and reliability of gear shifting process, the development and reserve of new technology are particularly important.

[0004] Specifically, the existing automatic transmission gear shifting execution mechanism has the problems of electromagnetic valve layout solidification, low gas path integration and insufficient space utilization. In traditional design, the electromagnetic valve is usually fixed and integrated inside the gear shifting execution mechanism, and its number and position are limited by the overall structure of the transmission, which is difficult to adjust flexibly according to the space difference of vehicle models, resulting in slow gear shifting response and high maintenance cost. At the same time, the external valve group needs to be connected with the execution mechanism through a complex external gas path, which not only increases the risk of leakage, but also affects the control precision due to the length of the gas path, and it is difficult to meet the high-precision control demand of multi-gear transmission. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of gas path structure for improving the gear shifting performance of AMT transmission, AMT transmission and automobile, the first aspect is to solve the technical defects in the prior art that the electromagnetic valve is usually fixed and integrated inside the transmission housing, and its number and position are limited by the overall structure of the transmission, which is difficult to adjust flexibly according to the space difference of vehicle models, resulting in slow brake response and high maintenance cost;The second aspect is to solve the technical defects in the prior art that the external valve group needs to be connected with the execution mechanism through a complex external gas path, which not only increases the risk of leakage, but also affects the control precision due to the length of the gas path, and it is difficult to meet the high-precision control demand of multi-gear transmission.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions to achieve it:

[0007] The first aspect provides a kind of gas path structure for improving the gear shifting performance of AMT transmission, comprising:

[0008] The clutch housing is provided with a gear shifting actuator and an air filter, and the gear shifting actuator is connected with the air filter.

[0009] The front end cover housing is provided on the clutch housing, and a valve group, a brake and a clutch actuator are mounted on the front end cover housing, the valve group and the brake are located at the end of the front end cover housing, the clutch solenoid valve and the brake solenoid valve are arranged in the valve group, and the valve group and the clutch actuator are connected through a third connecting gas circuit.

[0010] The first connecting gas circuit is arranged in the clutch housing, one end of the first connecting gas circuit is connected with the gear shifting actuator, and the other end of the first connecting gas circuit is connected with the front end cover housing.

[0011] The second connecting gas circuit is arranged on the front end cover housing, one end of the second connecting gas circuit is connected with the front end cover housing, and the other end of the second connecting gas circuit is connected with the valve group.

[0012] Further, the valve group and the brake are located in the right side area of the front end cover housing.

[0013] Further, the number of the clutch solenoid valves arranged in the valve group is four, and the number of the brake solenoid valves arranged in the valve group is two.

[0014] Further, the valve group comprises a housing and a sealing cover plate, the housing and the sealing cover plate are detachably connected, and the clutch solenoid valves and the brake solenoid valves are arranged in the housing.

[0015] Further, the housing is of a rectangular structure.

[0016] Further, the front end cover housing is detachably connected with the clutch housing.

[0017] Further, the clutch actuator is arranged in the middle part of the front end cover housing, the valve group is connected with the clutch actuator through an internal gas circuit, or the valve group and the clutch actuator are connected through an external hose.

[0018] Further, the first connecting gas circuit is embedded in the clutch housing, and the second connecting gas circuit is embedded in the front end cover housing.

[0019] In a second aspect, an AMT transmission is provided, which comprises a transmission body, and the gas circuit structure for improving the gear shifting performance of the AMT transmission is mounted on the transmission body.

[0020] In a third aspect, a vehicle is provided, which comprises a vehicle body, and the AMT transmission is mounted on the vehicle body.

[0021] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0022] 1、By separating the electromagnetic valve from the actuator body and forming an independent valve group, the number and installation position of the electromagnetic valve can be flexibly configured according to the actual space of the gearbox, and in particular, the valve group can be installed close to the brake body, significantly shortening the response path of the gas circuit; secondly, the valve group is integrated in the front end cover shell, which not only avoids the cost increase and aesthetic problems caused by peripheral installation, but also facilitates later maintenance; in addition, the main gas circuit and the valve group gas circuit are completely built-in in the shell, eliminating the reliability hidden danger of external piping, while providing flexible selection of gas circuit connection mode. Finally, the release of the internal space of the actuator makes it possible to integrate large-diameter cylinders and multiple sensors, which not only improves the shifting reliability, but also provides a hardware foundation for complex gas circuit control of 20 gears and above, forming a technical innovation scheme integrating efficient response, low-cost maintenance and high expandability.

[0023] 2、By setting different numbers of clutch electromagnetic valves and brake electromagnetic valves in the valve group, it can be applied to different demand shifting operations.

[0024] 3、The detachable sealing cover plate is connected by bolts, so that maintenance personnel can access the internal electromagnetic valve without disassembling the gearbox body.

[0025] 4、The corner characteristics of the rectangular structure are highly matched with the plane of the gearbox front end cover, and through modular nesting, the installation gap can be controlled within 0.5mm, which can free up more layout space, especially suitable for compact commercial vehicle platforms in the engine compartment. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 A schematic diagram of the gas circuit structure for improving the shifting performance of the AMT gearbox provided by the present application;

[0028] Figure 2 A front view of the gas circuit structure for improving the shifting performance of the AMT gearbox provided by the present application;

[0029] Figure 3 A perspective view of the gas circuit structure for improving the shifting performance of the AMT gearbox provided by the present application;

[0030] Figure 4 A valve group installation schematic diagram of the gas circuit structure for improving the shifting performance of the AMT gearbox provided by the present application;

[0031] 1, shift actuator; 2, air filter; 3, clutch housing; 4, front end cover housing; 5, valve group; 6, brake; 7, clutch actuator; 8, first connecting air path; 9, second connecting air path; 10, third connecting air path. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0034] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0036] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0037] The present application will be described in further detail below in conjunction with the drawings:

[0038] For example, Figures 1-4The utility model discloses a kind of air path structures for improving the gear shifting performance of AMT transmission, including: clutch housing 3, gear shifting executor 1 and air cleaner 2 are equipped on it, gear shifting executor 1 is connected with air cleaner 2;Front end cover shell 4 is set on clutch housing 3, and front end cover shell 4 is detachably connected with clutch housing 3. Valve group 5, brake 6 and clutch executor 7 are installed on front end cover shell 4, valve group 5 and brake 6 are located at the end of front end cover shell 4, more specifically, valve group 5 and brake 6 are all located in the right side area of front end cover shell 4;Clutch solenoid valve and brake solenoid valve are equipped in valve group 5, and valve group 5 and clutch executor 7 are connected by third connecting air path 10;First connecting air path 8 is set in the inside of clutch housing 3, one end is connected with gear shifting executor 1, and the other end is connected with front end cover shell 4;Second connecting air path 9 is set on front end cover shell 4, one end is connected with front end cover shell 4, and the other end is connected with valve group 5. In traditional design, solenoid valve is fixedly integrated in the inside of transmission housing, and quantity and position are limited, and it is difficult to flexibly adjust according to vehicle space difference, and the above structure is installed valve group 5 on front end cover shell 4, and clutch solenoid valve and brake solenoid valve are equipped in valve group 5, so that the layout of solenoid valve is no longer limited to the overall structure of transmission housing, and the installation position and mode of valve group 5 on front end cover shell 4 can be flexibly adjusted according to the space characteristics of different vehicles, so that the design requirements of various vehicles can be better adapted, and the brake response lag problem caused by space limitation can be avoided. Secondly, since the layout of solenoid valve is more flexible, when solenoid valve needs to be maintained or replaced, it can be directly maintained or replaced on valve group 5. In addition, by reasonably setting first connecting air path 8, second connecting air path 9 and third connecting air path 10, gear shifting executor 1, valve group 5, clutch executor 7 and other components are closely connected to form a relatively concentrated air path system. Compared with the mode that traditional external valve group is connected with executor through complex external air path, the dispersion and length of air path are reduced, the integration degree of air path is improved, and the complexity of air path system is reduced. Furthermore, the reasonable air path structure design makes the length and direction of air path more optimized, and the resistance of air flow is reduced. For example, through the efficient connection of first connecting air path 8 and second connecting air path 9, valve group 5 can quickly control the action of clutch and brake, so that the transmission can quickly shift to the appropriate gear, the rapidity of gear shifting process is improved, and the high requirements of customers on gear shifting performance are met. Finally, since the integration degree of air path is improved, the leakage risk of air path is reduced, and the length of air path is optimized, so that air pressure can be more stably and accurately transmitted to each moving component, the control accuracy of multi-gear transmission is improved, the stability and accuracy of gear shifting process are ensured, the overall gear shifting performance of AMT transmission is improved, and the driving comfort and economy of vehicle are enhanced.

[0039] Further, the valve group 5 comprises a shell and a sealing cover plate, the shell is detachably connected with the sealing cover plate, the clutch solenoid valve and the brake solenoid valve are arranged in the shell, the shell is in a rectangular structure, the number of the clutch solenoid valves arranged in the valve group 5 is four, and the number of the brake solenoid valves arranged in the valve group 5 is two. Wherein, the number of the clutch solenoid valves and the brake solenoid valves in the embodiment is only an example, and is not limited thereto, and the specific number depends on the size of the required increased arrangement space in the gear shifting actuator 1, if the required increased arrangement space is large, the total of the two kinds of solenoid valves is six and is removed out; if the required increased arrangement space is relatively large, only four clutch solenoid valves are removed out; if the required increased arrangement space is not large, only two brake solenoid valves are removed out.

[0040] In the embodiment, the clutch actuator 7 is arranged in the middle part of the front end cover shell 4; wherein, the valve group 5 is connected with the clutch actuator 7 through the internal gas circuit, or the valve group 5 is connected with the clutch actuator 7 through the external hose.

[0041] In the embodiment, the first connecting gas circuit 8 is embedded in the clutch shell 3, and the second connecting gas circuit 9 is embedded in the front end cover shell 4.

[0042] Specifically, as shown in Figure 2 and Figure 3 , the air filter 2 is fixedly installed on the gear shifting actuator 1, the gear shifting actuator 1 is fixedly installed above the clutch shell 3 by bolts, the clutch shell 3 is approximately in a barrel structure, the front end cover shell 4 is installed in front of the clutch shell 3, and the two are fixedly connected by bolts. As shown in Figure 2 and Figure 4 , the brake 6 is integrated in the front end cover shell 4 and located in the right side area of the front end cover shell 4, the clutch actuator 7 is installed in front of the middle area of the front end cover shell 4, and the two are fixedly connected by bolts, and the valve group 5 is arranged in front of the right side area of the front end cover shell 4, and the shell of the valve group 5 is designed in an integrated manner with the front end cover shell 4. As shown in Figure 2 , the first connecting gas circuit 8 is located in the inside of the clutch shell 3 and connects the gear shifting actuator 1 and the front end cover shell 4, as shown in Figure 4 , the second connecting gas circuit 9 is located on the front end cover shell 4 and connects the front end cover shell 4 and the valve group 5, and the third connecting gas circuit 10 is located on the valve group 5 and connects the valve group 5 and the clutch actuator 7. As shown in Figure 1 and Figure 2 , the compressed air from the whole vehicle first enters the air filter 2, the clean compressed air after filtration enters the gear shifting actuator 1, part of the compressed air enters the main tank and the auxiliary tank gear shifting solenoid valve to prepare for gear shifting, and the other part of the compressed air enters the gas circuit in the inside of the clutch shell 3 and then enters the front end cover shell 4 through the first connecting gas circuit 8.

[0043] As shown in Figure 2 andFigure 4 As shown, four clutch solenoid valves and two brake solenoid valves are installed in the valve group 5, which obtains compressed air from the front end cover housing 4 through the second connecting air path 9, and the compressed air is sent to the brake 6 and the clutch actuator 7 through the control of the solenoid valves. Since the brake 6 and the valve group 5 are designed in the right area of the front end cover housing 4, the length of the air path for the valve group 5 to supply air to the brake 6 is shortened, and the clutch actuator 7 is installed in the middle area of the front end cover housing 4, and the connecting air path can be realized through the inside of the front end cover housing 4 or through the external flexible hose. The first connecting air path 8 is arranged on the clutch housing 3, and the compressed air entering the clutch housing 3 enters the front end cover housing 4 through the air path, and the compressed air entering the front end cover housing 4 enters the valve group 5 through the second connecting air path 9, and the solenoid valves of the valve group 5 control the braking of the brake 6, and the exhaust gas generated by the solenoid valves can be discharged through any housing. Since the valve group 5 and the brake 6 are integrated in the same area of the front end cover housing 4, the inlet and outlet air paths are very short, which can accelerate the response of the brake and bring better braking effect.

[0044] In addition, the clutch actuator 7 and the clutch solenoid valves in the valve group 5 are responsible for controlling the separation and combination of the clutch, and the exhaust gas generated by the solenoid valves can be discharged through any housing. Since the clutch actuator 7 is installed on the front end cover housing 4, the inlet and outlet air paths can be completely built-in in the housing. In this design, the surfaces of the clutch housing 3 and the front end cover housing 4 are not attached to any external air path, which is more beautiful.

[0045] As shown in Figure 4 and Figure 2 , the air path connection mode of the valve group 5 and the clutch actuator 7 is changed, and the built-in housing inlet and outlet air path is changed to an external inlet and outlet air path. As shown in the third connecting air path 10, one end of the third connecting air path 10 is communicated with the solenoid valve on the housing of the valve group 5, and the other end is connected with the clutch actuator 7 through the external pipeline. The external pipeline can be a flexible hose. Compared with the built-in housing air path, the third connecting air path 10 is shorter, which can shorten the response time and reduce the design difficulty of the front end cover housing 4.

[0046] In a second aspect, an AMT transmission is provided, which comprises a transmission body, and the air path structure for improving the gear shifting performance of the AMT transmission is installed on the transmission body.

[0047] In a third aspect, a vehicle is provided, which comprises a vehicle body, and the AMT transmission described above is installed on the vehicle body.

[0048] It should be finally pointed out that: the above examples are only used to illustrate the technical scheme of the utility model and not to limit the protection scope thereof, although the utility model has been described in detail with reference to the above examples, those skilled in the art should understand that: the skilled person in the art can still make various changes, modifications or equivalent replacements to the specific embodiments of the utility model after reading the utility model, but these changes, modifications or equivalent replacements are all within the protection scope of the utility model to be approved.

Claims

1. A gas circuit structure for improving the shift performance of an AMT transmission, characterized by, The utility model relates to a kind of air path structure for improving the gear shifting performance of AMT transmission, including: Clutch housing (3), gear shifting actuator (1) and air cleaner (2) are provided on it, and the gear shifting actuator (1) is connected with the air cleaner (2); Front end cover housing (4) is arranged on the clutch housing (3), valve group (5), brake (6) and clutch actuator (7) are installed on the front end cover housing (4), the valve group (5) and the brake (6) are located at the end of front end cover housing (4), clutch solenoid valve and brake solenoid valve are arranged in the valve group (5), and the valve group (5) and the clutch actuator (7) are connected by third connection gas circuit (10); First connection gas circuit (8) is arranged inside clutch housing (3), one end is connected with the gear shifting actuator (1), and the other end is connected with front end cover housing (4); Second connection gas circuit (9) is arranged on front end cover housing (4), one end is connected with front end cover housing (4), and the other end is connected with the valve group (5).

2. The air path structure for improving the shift performance of an AMT transmission according to claim 1, characterized by, The valve group (5) and brake (6) are located in the right side area of front end cover housing (4).

3. The air path structure for improving the shift performance of an AMT transmission according to claim 1, characterized by, The number of clutch solenoid valve arranged in the valve group (5) is four, and the number of brake solenoid valve is two.

4. The air path structure for improving the shift performance of an AMT transmission according to claim 3, characterized in that, The valve group (5) includes shell and sealing cover plate, the shell is detachably connected with the sealing cover plate, and the clutch solenoid valve and brake solenoid valve are arranged in the shell.

5. The air path structure for improving the shift performance of an AMT transmission according to claim 4, characterized in that, The shell is rectangular structure.

6. The air path structure for improving the shift performance of an AMT transmission according to claim 1, characterized by, The front end cover housing (4) is detachably connected with the clutch housing (3).

7. The air path structure for improving the shift performance of an AMT transmission according to claim 1, characterized by, The clutch actuator (7) is arranged in the middle of front end cover housing (4);Wherein, the valve group (5) is connected with clutch actuator (7) by internal gas circuit, or the valve group (5) is connected with clutch actuator (7) by external hose.

8. The air path structure for improving the shift performance of an AMT transmission according to claim 1, characterized by, The first connection gas circuit (8) is embedded in the clutch housing (3), and the second connection gas circuit (9) is embedded in the front end cover housing (4).

9. An AMT transmission comprising a transmission body, characterized in that, The transmission body is installed with the air path structure for improving the gear shifting performance of AMT transmission according to any one of claims 1-7.

10. An automobile comprising a vehicle body, characterized by The vehicle body is installed with the AMT transmission according to claim 8.

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