AMT high-pressure air passage air tightness detection device

Abstract

The utility model discloses an AMT high-pressure air passage air tightness detection device, which comprises an air pressure detection mechanism, a limiting plate and an auxiliary connecting mechanism, the limiting plate can be connected with a clutch execution mechanism on the to-be-detected AMT transmission, and the limiting plate is used for limiting a release bearing of the clutch execution mechanism; the air pressure detection mechanism is connected with a high-pressure air channel of the AMT transmission to be detected through the auxiliary connection mechanism, and the air pressure detection mechanism can convey air to the high-pressure air channel through the auxiliary connection mechanism and test the air pressure change of the high-pressure air channel. For ATM transmissions with unqualified airtightness detection on a production line, the air pressure detection mechanism and the auxiliary connection mechanism are used for carrying out airtightness detection on the high-pressure air passage, whether the airtightness of the high-pressure air passage of the transmission is qualified or not can be judged, a specific area of an air leakage part can also be judged, airtightness detection is more accurate, and the detection efficiency is improved. And further repair operation of field personnel is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission case air tightness detection, relates to an air tightness detection device, and specifically relates to an AMT high-pressure air duct air tightness detection device. Background Art

[0002] An automated mechanical transmission (AMT) adds an electronic control unit and actuator to a traditional manual transmission, automating gear shifting through an electro-pneumatic system. When the AMT initiates a shift request, the shift actuator injects high-pressure gas into the clutch actuator through the transmission airway. The clutch actuator, using the release cylinder and release bearing, pushes the clutch pressure plate, disengaging the clutch. The shift actuator then drives the corresponding shift fork to shift gears. Clutch disengagement is a crucial step in the AMT's automatic shifting operation, and the airtightness of the entire airway system from the shift actuator to the clutch actuator is crucial for clutch disengagement. Leakage in any of these components can affect transmission shifting.

[0003] Existing AMT transmission airtightness testing devices offer high efficiency and accurate results, capable of testing the entire airway system from the shift actuator to the clutch actuator. However, they are unable to pinpoint the leak point in unqualified AMTs, making subsequent repairs of failed airtightness tests difficult. Therefore, there is an urgent need for a device that can directly test the airtightness of the high-pressure airway leading to the clutch actuator. Utility Model Content

[0004] In response to the technical problems existing at this stage, the purpose of the present utility model is to provide an AMT high-pressure airway air tightness detection device to solve the technical problem of the lack of an AMT high-pressure airway air tightness detection device in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention discloses the following technical solutions:

[0006] An AMT high-pressure airway air tightness detection device includes an air pressure detection mechanism, a limit plate, and an auxiliary connection mechanism;

[0007] The limit plate can be connected to the clutch actuator on the AMT transmission to be tested, and the limit plate is used to limit the release bearing of the clutch actuator;

[0008] The air pressure detection mechanism is connected to the high-pressure air passage of the AMT transmission to be detected through the auxiliary connection mechanism. The air pressure detection mechanism can deliver gas to the high-pressure air passage through the auxiliary connection mechanism and test the air pressure change of the high-pressure air passage.

[0009] The utility model also has the following technical features:

[0010] Specifically, the limit plate includes a limit plate body, a first mounting hole is opened through the middle of the limit plate body, a first annular boss is arranged outside the first mounting hole, and the first annular boss can abut against the release bearing of the clutch actuator; an axis of the AMT transmission to be tested can pass through the first mounting hole.

[0011] Furthermore, a second mounting hole is provided on the limit plate body, and the limit plate body and the AMT transmission to be tested are detachably connected by means of a first bolt passing through the second mounting hole.

[0012] Furthermore, the air pressure detection mechanism includes a gas source, an airtightness meter and a gas pipeline. The gas output end of the gas source is connected to the auxiliary connecting mechanism through the gas pipeline. The airtightness meter is arranged on the gas pipeline. The airtightness meter is used to transport high-pressure gas into the high-pressure airway.

[0013] Furthermore, the auxiliary connection mechanism includes a cover plate and a second annular boss connected to the lower end surface of the cover plate, the cover plate is provided with an air hole, a gas channel is provided in the second annular boss, the air hole is connected to the gas channel, and the gas channel can be connected to the air inlet end of the high-pressure air duct.

[0014] Furthermore, a groove is provided at the bottom end of the second annular boss, and a sealing ring is provided in the groove.

[0015] Furthermore, an air pipe joint communicating with the gas channel is provided in the air hole, and an air inlet end of the air pipe joint is connected to an air outlet end of the gas pipeline.

[0016] Furthermore, a third mounting hole is provided through the cover plate, and the cover plate is detachably connected to the AMT transmission to be tested by means of a second bolt passing through the third mounting hole.

[0017] Furthermore, the gas source is a gas delivery device.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The utility model is aimed at the ATM transmission that fails the air tightness test on the production line. With the help of the air pressure detection mechanism, the limit plate and the auxiliary connection mechanism, the air tightness test is performed on the high-pressure air duct of the ATM transmission. That is, it can be judged whether the air tightness of the high-pressure air duct of the transmission is qualified, and the area of the leaking part can be judged, so that the air tightness test is more accurate and it is convenient for the on-site personnel to further repair the work.

[0020] (2) The utility model is simple to operate for testing the air tightness of the transmission high-pressure air duct, saves time and effort, has low testing cost, can be used multiple times, and has accurate test results, and has the value of promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 The overall structure diagram of the AMT transmission to be tested is shown in FIG.

[0023] Figure 2 This is a schematic diagram of the installation of the utility model;

[0024] Figure 3 This is a partial cross-sectional view of the utility model after being assembled with the AMT transmission to be tested;

[0025] Figure 4 Schematic diagram of the limiting plate structure;

[0026] Figure 5 Schematic diagram of the auxiliary connection mechanism;

[0027] Figure 6 This is a schematic diagram of the gas circuit principle structure of the utility model.

[0028] Numbers in the figure:

[0029] 1-AMT transmission to be tested, 2-air pressure detection mechanism, 3-limiting plate, 4-auxiliary connecting mechanism; 11-clutch actuator, 12-release bearing, 13-first shaft, 14-shift actuator, 15-high-pressure airway; 21-air source, 22-airtightness tester, 23-gas pipeline; 31-limiting plate body, 32-first mounting hole, 33-first annular boss, 34-second mounting hole, 35-first bolt; 41-cover plate, 42-second annular boss, 43-air hole, 44-gas channel, 45-air pipe joint, 46-third mounting hole, 47-second bolt, 48-groove, 49-sealing ring.

[0030] The following specific implementation manner describes this solution in detail. DETAILED DESCRIPTION

[0031] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent modifications made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0032] Terms such as "upper", "lower", "front", "back", "top" and "bottom" used in the present invention to indicate directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction. "Inside" and "outside" refer to the inside and outside of the contours of the corresponding components, and the above terms cannot be understood as limitations on the present invention.

[0033] Furthermore, the terms "first," "second," and other ordinal numbers are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referenced. Thus, a feature designated "first" or "second" may explicitly or implicitly include one or more of the features.

[0034] In this utility model, unless otherwise specified, terms such as "installed," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0035] Unless otherwise specified, the components in this utility model can be purchased from the market.

[0036] Example 1

[0037] Following the above technical solution, Figures 1 to 6 As shown, this embodiment provides an AMT high-pressure airway air tightness detection device, including an air pressure detection mechanism 2, a limit plate 3 and an auxiliary connection mechanism 4;

[0038] The limit plate 3 can be connected to the clutch actuator 11 of the AMT transmission 1 to be tested. The limit plate 3 is used to limit the release bearing 12 mounted on the clutch actuator 11. The limit plate 3 is used to prevent the release bearing 12 from separating from the clutch actuator 11 under the action of the high-pressure gas when it is delivered to the high-pressure gas passage 15 of the AMT transmission 1 to be tested, thereby flying out and injuring someone. After the limit plate 3 is installed, the clutch actuator 11 is compressed to approximately half of its cylinder stroke.

[0039] The air pressure detection mechanism 2 is connected to the high-pressure air passage 15 of the AMT transmission 1 to be detected through the auxiliary connection mechanism 4. The air pressure detection mechanism 2 can deliver high-pressure gas to the high-pressure air passage 15 through the auxiliary connection mechanism 4 and detect air pressure changes;

[0040] As a preferred solution of this embodiment, the limit plate 3 includes a limit plate body 31, a first mounting hole 32 is opened through the middle of the limit plate body 31, a first annular boss 33 is arranged outside the first mounting hole 32, and the first annular boss 33 can abut against the release bearing 12; a shaft 13 of the AMT transmission 1 to be tested can pass through the first mounting hole 32.

[0041] As a preferred solution of this embodiment, a second mounting hole 34 is further provided on the limit plate body 31 , and the limit plate body 31 and the AMT transmission 1 to be tested are detachably connected by means of a first bolt 35 passing through the second mounting hole 34 .

[0042] As a preferred solution of this embodiment, the air pressure detection mechanism 2 includes a gas source 21, an airtightness meter 22 and a gas pipeline 23. The gas output end of the gas source 21 is connected to the auxiliary connecting mechanism 4 through the gas pipeline 23. The airtightness meter 22 is arranged on the gas pipeline 23. The airtightness meter 22 is used to transport gas into the high-pressure airway 15.

[0043] As a preferred solution of this embodiment, the auxiliary connecting mechanism 4 includes a cover plate 41 and a second annular boss 42 connected to the lower end face of the cover plate 41. An air hole 43 is opened through the cover plate 41, and a gas channel 44 is set through the second annular boss 42. The air hole 43 is connected to the gas channel 44, and the gas channel 44 can be connected to the air inlet end of the high-pressure air duct 15.

[0044] As a preferred solution of this embodiment, a groove 48 is provided at the bottom end of the second annular boss 42 , and a sealing ring 49 is provided in the groove 48 . The sealing ring 49 is used to seal the connection portion between the auxiliary connecting mechanism 4 and the high-pressure air duct 15 .

[0045] As a preferred solution of this embodiment, an air pipe connector 45 communicating with the air channel 44 is provided in the air hole 43 , and the air inlet end of the air pipe connector 45 is connected to the air outlet end of the gas pipeline 23 .

[0046] As a preferred solution of this embodiment, a third mounting hole 46 is further formed through the cover plate 41 , and the cover plate 41 and the AMT transmission 1 to be tested are detachably connected by means of a second bolt 47 passing through the third mounting hole 46 .

[0047] As a preferred solution of this embodiment, the gas source 21 is a gas delivery device that can deliver gas to the interior of the AMT transmission 1 to be tested and ensure that the air tightness test or inspection is performed under stable air pressure conditions.

[0048] As a preferred solution of this embodiment, the airtightness meter 22 uses the Adek F5700 airtightness meter.

[0049] When the utility model is in use:

[0050] Remove the shift actuator 14 from the AMT transmission 1 to be tested, and complete the connection between the air pressure detection mechanism 2, the limit plate 3, the auxiliary connection mechanism 4 and the AMT transmission 1 to be tested; open the air source 21, and with the help of the air source 21, deliver high-pressure gas with a pressure of 4 bar to the AMT transmission 1 to be tested through the gas pipeline 23, and the gas enters the high-pressure air duct 15 of the AMT transmission 1 through the air pipe joint 45 and the gas channel 44. After the air pressure stabilizes, the air pressure change is detected by the airtightness tester 22. If the airtightness tester 22 shows that the test result is qualified, it means that the high-pressure air duct 15 has good air tightness, and the shift actuator 14 needs to be replaced; if the airtightness test result is unqualified, it means that there are sand holes and cracks in the high-pressure air duct 15, and the housing of the AMT transmission 1 to be tested needs to be replaced.

[0051] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0052] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0053] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An AMT high-pressure airway air tightness detection device, comprising an air pressure detection mechanism (2), characterized in that: It also includes a limiting plate (3) and an auxiliary connecting mechanism (4); The limit plate (3) can be connected to a clutch actuator (11) on an AMT transmission (1) to be tested, and the limit plate (3) is used to limit a release bearing (12) mounted on the clutch actuator (11); The air pressure detection mechanism (2) is connected to the high-pressure air passage (15) of the AMT transmission (1) to be detected via the auxiliary connection mechanism (4). The air pressure detection mechanism (2) is capable of delivering high-pressure gas to the high-pressure air passage (15) via the auxiliary connection mechanism (4) and detecting air pressure changes.

2. The AMT high-pressure airway air tightness detection device according to claim 1, characterized in that: The limit plate (3) comprises a limit plate body (31), a first mounting hole (32) is provided through the middle of the limit plate body (31), a first annular boss (33) is provided outside the first mounting hole (32), and the first annular boss (33) can abut against the release bearing (12); and a shaft (13) of the AMT transmission (1) to be tested can pass through the first mounting hole (32).

3. The AMT high-pressure airway air tightness detection device according to claim 2, characterized in that: A second mounting hole (34) is also provided on the limit plate body (31), and the limit plate body (31) and the AMT transmission (1) to be detected are detachably connected by means of a first bolt (35) passing through the second mounting hole (34).

4. The AMT high-pressure airway air tightness detection device according to claim 1, characterized in that: The air pressure detection mechanism (2) comprises an air source (21), an airtightness meter (22) and an air delivery pipeline (23); the gas output end of the air source (21) is connected to the auxiliary connection mechanism (4) via the air delivery pipeline (23); the airtightness meter (22) is arranged on the air delivery pipeline (23); and the airtightness meter (22) is used to deliver gas into the high-pressure airway (15).

5. The AMT high-pressure airway air tightness detection device according to claim 4, characterized in that: The auxiliary connection mechanism (4) comprises a cover plate (41) and a second annular boss (42) connected to the lower end surface of the cover plate (41); an air hole (43) is provided through the cover plate (41); a gas channel (44) is provided through the second annular boss (42); the air hole (43) is connected to the gas channel (44); and the gas channel (44) can be connected to the air inlet end of the high-pressure air channel (15) of the AMT transmission (1) to be tested.

6. The AMT high-pressure airway air tightness detection device according to claim 5, characterized in that: A groove (48) is provided at the bottom end of the second annular boss (42), and a sealing ring (49) is provided in the groove (48).

7. The AMT high-pressure airway air tightness detection device according to claim 5, characterized in that: An air pipe joint (45) communicating with the air channel (44) is provided in the air hole (43), and an air inlet end of the air pipe joint (45) is connected to an air outlet end of the air delivery pipeline (23).

8. The AMT high-pressure airway air tightness detection device according to claim 5, characterized in that: The cover plate (41) is also provided with a third mounting hole (46) extending therethrough, and the cover plate (41) and the AMT transmission (1) to be tested are detachably connected by means of a second bolt (47) passing through the third mounting hole (46).

9. The AMT high-pressure airway air tightness detection device according to claim 4, characterized in that: The gas source (21) is a gas delivery device.

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