CN112197043B - AMT exhaust and airtight self-checking method and AMT clutch electromechanical device with self-checking function - Google Patents

Abstract

The invention provides an AMT exhaust and airtight self-checking method, which comprises the following steps: s1, configuring a drainage channel with one end communicated with the atmosphere and the other end communicated with a pipeline between a valve port of a clutch electromechanical device control valve body and a pressure building cavity; step S2 of configuring an exhaust self-checking device at the opening position of the drainage channel communicated with the atmosphere, wherein the inner cavity of the exhaust self-checking device is in butt joint with the drainage channel, and an exhaust channel which is closed in a normal state is formed in the exhaust device; and S3, operating the exhaust self-checking device to open an internal exhaust channel and communicating the external atmosphere with the drainage channel, wherein the gas in the pressure build cavity is discharged from the exhaust self-checking device, and the technical problems of high product checking difficulty, low efficiency and incomplete internal pressure release existing in an electromechanical actuating device of the mechanical automatic transmission in the prior art can be solved by configuring the exhaust self-checking device.

Description

AMT exhaust and airtight self-checking method and AMT clutch electromechanical device with self-checking function

Technical Field

The invention belongs to the technical field of mechanical automatic transmissions, and particularly relates to an AMT exhaust and airtight self-checking method and an AMT clutch electromechanical device with the self-checking function.

Background

In the prior art, besides the technical problem that partial pressure failure points are generated by an air compressor and a control pipeline due to multistage distribution of the air pressure, so that the air inlet pressure of the transmission is overlarge, corresponding technical problems also exist in the self assembly process of the transmission. In the assembling process of the mechanical automatic transmission, the swing rod of the clutch is required to overcome the elastic force of the elastic return device corresponding to the swing rod and adjust the swing rod to a preset angle position so as to keep the components of the clutch electromechanical device to be accurately aligned. In general, the calibration of the components of the clutch mechanism requires the assistance of special tools, which are complex in structure and inconvenient to use.

On the other hand, the mechanical mounting structure of the clutch mechanical device needs to be checked for quality before use, and the completion of the checking process needs to be externally connected with an air source and a pressure gauge which meet certain conditions, or needs to be checked and evaluated by means of test software, an air pressure sensor, a pipeline bench and the like, and after the user side finishes the checking and evaluation of the reliability of the loading use of the mechanical device of the transmission, the mounting process is further completed. It can thus be seen that the assembly and testing process of a mechanical automatic transmission is also very complicated, in addition to the high demands on the assembly accuracy.

One idea at present is to attempt to simplify the assembly and maintenance process of the transmission by improving the electromechanical actuating structure of the transmission and eliminate the potential safety hazard in the assembly process. The technical problem of this idea is that the mechanical automatic transmission realizes the separation and combination process of clutch, which is essentially the inflation and deflation process of the internal cylinder, and the internal structure of the mechanical automatic transmission comprises an electromechanical actuator which is the equipment for controlling the electric quantity and the time quantity in the inflation and deflation process in the coupling process of the transmission. It can be seen that if the exhaust process is not completed, the sudden power failure will cause the device to build up high pressure energy remaining in the pressure chamber cylinder. In combination with the suddenly increased air pressure in the pressure multistage distribution process, or due to the fact that the exhaust process is not completely executed and the sudden power failure is caused, the exhaust process is not completely executed, and high-pressure energy remains and is stored in the transmission pressure building cylinder. The stored high-pressure energy can cause the cylinder body to suddenly burst in the assembly, maintenance and replacement processes of the transmission, the burst cylinder can directly cause the sudden disassembly of a loose fastener in the cylinder body due to long-term use, and the formed shock waves can also cause injury to operators. The potential safety hazard is further amplified by considering that the equipment is frequently powered on and off in the maintenance process.

Therefore, in the electromechanical actuating device in the mechanical automatic transmission in the prior art, the technical problems of low product verification efficiency, high installation difficulty in the loading process and potential safety hazards caused by release of internal pressure exist in the loading and maintenance processes. In view of the above, the prior art should be improved to overcome the above-mentioned technical problems.

Disclosure of Invention

The invention aims to solve the technical problems of large product verification difficulty and low efficiency of an electromechanical actuating device of a mechanical automatic transmission in the prior art by configuring an exhaust self-checking device, and provides an AMT exhaust and airtight self-checking method and an AMT clutch electromechanical device with the self-checking function.

In order to solve the technical problems, the AMT exhaust self-checking method adopted by the invention comprises the following steps: s1, configuring a drainage channel with one end communicated with the atmosphere and the other end communicated with a pipeline between a valve port of a clutch electromechanical device control valve body and a pressure building cavity; step S2 of configuring an exhaust self-checking device at the opening position of the drainage channel communicated with the atmosphere, wherein an inner cavity of the exhaust self-checking device is in butt joint with the drainage channel, and an exhaust channel which is closed in a normal state is formed in the exhaust device; and S3, operating the exhaust self-checking device to open the exhaust channel in the exhaust self-checking device and communicating the external atmosphere with the drainage channel, so that the gas in the pressure building cavity is discharged from the exhaust self-checking device.

Preferably, the exhaust gas self-checking device includes: the fixing piece is fixedly connected with the channel opening of the drainage channel; the movable piece extends in the inner cavity of the fixed piece and can move along the extending direction of the inner cavity of the fixed piece, wherein in a normal state, the movable piece keeps a trend of moving towards the direction of the fixed piece and is limited by the fixed piece, and the exhaust channel is closed; in the use state, the sealing between the movable piece and the fixed piece is released, and then the exhaust channel is opened.

Further preferably, the exhaust gas self-test device includes: the fixing piece is an outer valve body, the outer valve body is fixedly connected with a passage opening of the drainage passage, and the exhaust passage is formed in an inner cavity of the outer valve body; the retainer is arranged in the inner cavity of the outer valve body and fixedly connected with the wall surface of the exhaust channel; the movable part is a gating device, the gating device stretches into the retainer, an elastic part is arranged between the gating device and the retainer, wherein a sealing seat is arranged on the gating device, the elastic part has a preset deformation quantity, the traction force generated by the deformation quantity enables the gating device to be in a trend of moving towards the elastic part and limiting the sealing seat by the inner wall of the retainer in a normal state, and then the exhaust channel is separated from the drainage channel; under the use state, the gate control device overcomes the traction force of the elastic component and moves away from the direction of the elastic component, so that the limit between the sealing seat and the inner wall of the retainer is released, and at the moment, the exhaust channel is communicated with the drainage channel.

Still further preferably, the inner side wall surface of the outer valve body forms a converging first annular inclined surface, and a sealing sleeve is arranged between the inner side wall surface of the outer valve body at the first annular inclined surface and the outer side wall surface of the retainer, so that a seal is formed between the outer valve body and the retainer; the inner side wall surface of the retainer forms a converging second annular inclined plane, and the sealing seat and the second annular inclined plane are extruded and limited to form a seal in a normal state.

Still further preferably, in the step S3, the step of operating the exhaust self-checking device to open the exhaust passage inside the exhaust self-checking device is to continuously or non-continuously press the gate device against the traction force of the elastic member.

Still further preferably, the gate control device is a long straight member with an i-shaped cross section, two ends of the long straight member respectively form two flanges, and the two flanges are respectively defined as a first flange fixedly connected with the elastic component and a second flange fixedly connected with the sealing seat.

Still further preferably, the gate device further includes a third flange, and the gate device is an elongated straight member having a cross-section in a shape of a king, the third flange being located between the first flange and the second flange in the extending direction of the gate device, and the seal seat being located between the third flange and the second flange.

Still preferably, the fixing member further includes a dust cover thereon, wherein a gap is formed between the dust cover and the fixing member outer profile.

Correspondingly, the invention also provides an AMT airtight self-checking method, which comprises the following steps: s1, configuring a drainage channel with one end communicated with the atmosphere and the other end communicated with a pipeline between a valve port of a clutch electromechanical device control valve body and a pressure building cavity; step S2 of configuring an exhaust self-checking device at the opening position of the drainage channel communicated with the atmosphere, wherein an inner cavity of the exhaust self-checking device is in butt joint with the drainage channel, and a normally closed exhaust channel is formed in the exhaust device; s3, operating the exhaust self-checking device to open the exhaust channel in the exhaust self-checking device and pushing the bearing guide rod of the clutch electromechanical device to compress the pressure build-up cavity to the minimum volume; s4, operating the exhaust self-checking device to close the exhaust channel in the exhaust self-checking device, and if the bearing guide rod does not return in preset time, ensuring that the air tightness is good; otherwise, the air tightness is poor.

The invention also provides a clutch electromechanical device with self-checking AMT, the clutch electromechanical device is provided with an exhaust self-checking device, the exhaust self-checking device is in butt joint with a drainage channel of the clutch electromechanical device, and the exhaust self-checking device comprises: the outer valve body is fixedly connected with the passage opening of the drainage passage, and an inner cavity of the outer valve body is defined as an exhaust passage; the retainer is arranged in the inner cavity of the outer valve body and fixedly connected with the wall surface of the exhaust channel; the door control device stretches into the retainer, an elastic component is arranged between the door control device and the retainer, a sealing seat is arranged on the door control device, the elastic component has a preset deformation quantity, the traction force generated by the deformation quantity enables the door control device to be in a trend of moving towards the elastic component in a normal state, and the sealing seat of the door control device is limited by the inner wall of the retainer, so that the exhaust channel is separated from the drainage channel; under the use state, the gate control device overcomes the traction force of the elastic component and moves away from the direction of the elastic component, so that the limit between the sealing seat and the inner wall of the retainer is released, and at the moment, the exhaust channel is communicated with the drainage channel.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial technical effects:

1. Compared with the detection mode that auxiliary equipment such as a gas source, a pressure gauge or a gas pressure sensor and test software is needed in the prior art, the invention provides the detection method of the electromechanical actuating device of the automatic transmission, wherein the detection method is that the electromechanical actuating device of the automatic transmission is provided with the exhaust self-detection device without the auxiliary equipment; meanwhile, a channel switch between the pressure building cavity of the electromechanical execution structure and the outside atmosphere can be constructed by utilizing the exhaust self-checking device, and the channel between the pressure building cavity and the outside atmosphere is in a closed state in a normal state, when the exhaust self-checking device is used, the communication between the pressure building cavity and the outside atmosphere can be realized only by operating the exhaust self-checking device to open the internal channel, in the process, a guide rod for pushing the electromechanical execution is matched, so that the gas in the pressure building cavity is discharged, at the moment, the negative pressure of the gas received by a piston part in the pressure building cavity is balanced with the elasticity of a return spring in the pressure building cavity and the thrust of the bearing guide rod on the return spring, and whether the air tightness of each sealing part (comprising a sealing seat, a sealing block, a lip-shaped ring and the like) in the pressure building cavity is good is judged by observing the movement condition of the bearing guide rod in a preset time interval;

2. The exhaust self-checking device constructs a normally closed channel from the pressure build cavity to the outside atmosphere through the fixed part and the movable part, and defines the channel as an exhaust channel, namely, the exhaust channel is in a closed state in a non-use state (or a non-detection state), when the exhaust self-checking device is required to be used, the movable part moves and releases the sealing contact between the movable part and the fixed part, so that the exhaust channel in the exhaust device is opened, the pressure build cavity and the outside form a channel, and residual gas in the pressure build cavity is exhausted through the exhaust channel.

3. The characteristic of the exhaust self-checking device is applied to the exhaust self-checking process of the electromechanical executing structure, namely, the exhaust self-checking device can be pressed continuously or discontinuously to exhaust the gas in the pressure building cavity, so that potential safety hazards of the electromechanical executing structure in the processes of installation checking, replacement maintenance and the like are reduced;

4. Further, in the process of applying the characteristics of the exhaust self-checking device to the air tightness detection of the electromechanical execution structure, firstly, operating the exhaust self-checking device to open an exhaust passage, then, abutting a bearing guide rod of the clutch electromechanical device approximately vertically on a rigid support, overcoming a return spring in a pressure building cavity to enable the volume of the pressure building cavity to be at the minimum, discharging air in the pressure building cavity from the exhaust passage, and then, operating the exhaust self-checking device to close the exhaust passage, wherein at the moment, the negative pressure of the air received by a piston part in the pressure building cavity, the elasticity of the return spring of the pressure building cavity and the thrust of the bearing guide rod on the piston part are balanced within a preset time, and then, if the sealing performance of each sealing part in the pressure building cavity is good, the bearing guide rod should keep a stable state within the preset time without return; otherwise, if the exhaust self-checking device is operated to enable the exhaust channel of the exhaust self-checking device to be closed and then the bearing guide rod returns to the original position, the air tightness of the sealing element in the pressure building cavity is indicated to be problematic;

5. The movable part in the exhaust self-checking device is a gating device, the gating device is connected with the retainer through an elastic part, a third flange can be additionally arranged between the first flange and the second flange of the gating device, and the third flange plays a role in guiding in the moving process of the gating device; the step of operating the exhaust self-checking device is to overcome the traction force of the elastic component, continuously or discontinuously press the first flange of the gate control device, and the force application direction of an operator is not always kept perpendicular to the elastic deformation direction of the elastic component, so that the movement track of the gate control device is always perpendicular to the elastic direction of the elastic component through the third flange with a lead function, thereby ensuring the working condition of the exhaust self-checking device and prolonging the service life of the exhaust self-checking device;

6. The inner side wall of the outer valve body serving as the fixing piece is internally provided with a convergent annular inclined surface, a rubber sealing sleeve is filled between the outer valve body and the retainer, the retainer is fed to a preset position in the outer valve body along threads, and then the retainer and the outer valve body are sealed through the sealing sleeve; correspondingly, the inner wall of the retainer also forms a convergent annular inclined plane, thereby playing a role in ensuring the sealing effect of the device;

7. In order to prevent external dust and sediment from entering the pressure building cavity through the exhaust self-checking device, a dust cover which covers the door control device and the outer valve body is arranged at the top of the door control device, and a gap is reserved between the dust cover and the fixing piece (the outer valve body), so that when pollutants are prevented from entering the cavity, the exhaust pressure can be obviously reduced when high-pressure gas in the pressure building cavity is exhausted.

Drawings

FIG. 1 is a cross-sectional view showing the cross-sectional configuration of a self-test AMT clutch electromechanical device in accordance with a preferred embodiment of the present invention;

FIG. 2 is a state diagram illustrating the self-test clutch electromechanical device of FIG. 1 assembled with a pendulum rod;

FIG. 3 is an enlarged partial cross-sectional view showing the enlarged partial cross-sectional structure of portion A of FIG. 2;

FIG. 4 is a cross-sectional view showing a cross-sectional configuration of the gating apparatus and cage assembly shown in FIG. 3;

FIG. 5 is a state diagram showing a state in which an exhaust passage in the exhaust self-test device shown in FIG. 3 is open;

FIG. 6 is a cross-sectional view showing a cross-sectional structure of an exhaust self-test device having a "king" shaped gate control device in accordance with another preferred embodiment of the present invention;

FIG. 7 is a state diagram showing a state in which an exhaust passage is opened in the exhaust self-test device shown in FIG. 6;

fig. 8 is a use state diagram showing a state in which the clutch electromechanical device with self-test AMT shown in fig. 1 checks air tightness.

Detailed Description

Embodiments of an AMT exhaust and hermetic self-test method and an AMT clutch electro-mechanical device with self-test according to the present invention will be described below with reference to the accompanying drawings. Those skilled in the art will recognize that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive in scope. Furthermore, in the present specification, the drawings are not drawn to scale, and like reference numerals denote like parts.

It should be noted that, in the embodiments of the present invention, the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the expressions "first" and "second" are merely used for convenience of description, and should not be construed as limiting the embodiments of the present invention, and the following embodiments are not described one by one.

The AMT exhaust self-checking method and the airtight self-checking method in the preferred embodiment of the invention are realized based on the exhaust self-checking device arranged on the clutch electromechanical device. The exhaust self-checking device constructs a controllable channel from the pressure build-up cavity to the outside atmosphere in the clutch electromechanical device, thereby realizing that the pressure build-up cavity is exhausted to the outside by controlling the exhaust self-checking device.

Referring first to FIGS. 1 and 2, FIG. 1 is a cross-sectional view showing a cross-sectional configuration of a self-test AMT clutch electromechanical device in accordance with a preferred embodiment of the present invention; fig. 2 is a state diagram illustrating a state in which the self-test AMT clutch electromechanical device with a swing link shown in fig. 1 is assembled. As shown in fig. 1, the clutch electromechanical device 100 includes a pressure build-up chamber 101 in a cylinder body, a piston member 103 driven by a force-bearing guide rod 102 is disposed in the pressure build-up chamber 101, and a return spring 104 is abutted against the piston member 103, and referring to fig. 2, in an assembled state, the force-bearing guide rod 102 of the clutch electromechanical device 100 is coupled with a swing rod ball socket on a swing rod 105 to realize continuous contact linkage butt joint. The swing rod 105 is subjected to the action of a preset return force, so that one end connected with the load-bearing guide rod 102 always keeps the trend of moving towards one side of the clutch electromechanical device 100, and pushes the load-bearing guide rod 102 to drive the piston member 103 to compress the return spring 104 to move until the elastic force generated by deformation of the return spring 104 and the thrust of the swing rod 105 on the load-bearing guide rod 102 are balanced and then are kept still. Referring back to fig. 1, the clutch electromechanical device further includes two electromagnetic devices 106, wherein a valve port of the electromagnetic device 106 corresponding to the air inlet end is communicated with the pressure build-up chamber 101 through a pipeline. In the preferred embodiment of the present invention, a channel is formed in the cylinder of the clutch electromechanical device, one end of the channel is communicated with the outside air, the other end of the channel is communicated with a pipeline in which the valve port of the electromagnetic device 106 is communicated with the pressure build-up cavity 101, and in the present invention, the channel is defined as a drainage channel 107. As shown in fig. 1, when the electromagnetic device 106 is turned off, the gas in the pressure build-up chamber 101 can be discharged through the drainage channel 107. The exhaust self-test device 200 interfaces with the drainage channel 107. With continued reference to fig. 1, the exhaust self-checking device 200 is fixedly connected with the cylinder body of the channel port of the drainage channel 107, and the idea of the invention is to control the communication and the separation of the drainage channel 107 and the external atmosphere by taking the exhaust self-checking device 200 as a switch of the drainage channel 107.

Next, the exhaust self-test device 200 is specifically described. The exhaust self-checking device in this embodiment of the present invention is essentially configured with a fixed member and a movable member, wherein the fixed member is used for realizing the fixation with the cylinder body of the channel port of the drainage channel 107, and the movable member is disposed in the fixed member and is in pressing contact with the fixed member to form a seal in a normal state, i.e. in a non-opened state, and at this time, the drainage channel 107 is isolated from the outside. In the open state, the sealing between the movable member and the fixed member is disabled by releasing the pressing contact between the movable member and the fixed member, so that the drainage channel 107 is communicated with the outside.

Fig. 3 is an enlarged partial cross-sectional view showing a partially enlarged cross-sectional structure of a portion a in fig. 2. As shown in fig. 3, the exhaust self-checking device according to a preferred embodiment of the present invention includes an outer valve body 201, a retainer 202 with a vulcanization valve disposed in the outer valve body 201, and a gate device 203 disposed in the retainer 202 and movable in the retainer 202. The outer valve body 201 is fixedly connected with the cylinder body at the channel port of the drainage channel 107 through threads, the outer valve body 201 is a hollow member, a cavity formed by the hollow portion in the outer valve body is defined as an exhaust channel 204, and after the exhaust self-checking device 200 is fixedly connected, the exhaust channel 204 is in butt joint with the drainage channel 107 as shown in fig. 3. The inner side wall surface of the outer valve body 201 forms the screw part 205, and the outside of the holder 202 forms a screw thread (not shown) corresponding to the screw part 205 of the outer valve body 201, so that the holder can be inserted from the opening part of the outer valve body 201 and fed to a limit along the screw part, thereby completing the fixation with the outer valve body 201. It will be appreciated that in the preferred embodiment, the whole body formed by the outer valve body 201 and the retainer 202 is regarded as a fixing member, and the split design of the fixing member is more beneficial to prolonging the whole service life, but such design also necessarily needs to consider the sealing effect between the two, and continuing to refer to fig. 3, in order to solve the sealing problem between the two, the inner side wall surface of the outer valve body 201 forms an annular inclined surface converging towards the channel opening of the drainage channel 107, and is defined as a first annular inclined surface 206, after the outer valve body 201 is fixedly connected with the retainer 202, a gap is formed between the inner side surface of the outer valve body 201 and the outer profile surface of the retainer 202, and in the preferred embodiment, the gap is filled and sealed by a sealing sleeve 207 made of vulcanized hard rubber material on the retainer 202, so that the influence on the sealing effect between the outer valve body 201 and the retainer 202 caused by the movement process of the control gate control device 203 is avoided. In addition, it should be mentioned that another way to solve the sealing problem between the two is to integrally form the outer valve body 201 and the retainer 202 into a fixing member, however, although the sealing problem between the two can be neglected, it is unfavorable for prolonging the service life of the whole structure and increases the difficulty of modeling and assembling the structure.

Again, the gating device 203. Fig. 4 is a cross-sectional view showing a cross-sectional structure of the gating apparatus and the cage assembly shown in fig. 3. In the preferred embodiment, the gating device 203 is coupled to the cage 202 as a moveable member. Specifically, with continued reference to fig. 3 and with reference to fig. 4, the gate device 203 is an elongated straight member having an "i" shaped cross section in cross section, including two block-shaped flanges at each end thereof, defined as a first flange 2031 distal from the drain channel 107 and a second flange 2032 proximal to the drain channel 107, respectively. An elastic member 208 is fixedly connected between the first flange 2031 and the retainer 202, a sealing seat 209 is fixedly arranged on the second flange 2032, an annular inclined plane converging towards the direction of the passage opening of the drainage channel 107 is formed on the inner side wall surface of the retainer 202 in accordance with the outer contour wall surface of the retainer 202, the annular inclined plane is defined as a second annular inclined plane 210, and the inner surface of the second annular inclined plane 210 is contacted with the sealing seat 209 on the second flange 2032 to form a seal. As described above, in the present general inventive concept, the movable member is required to be pressed with the fixed member to form a seal in a normal state, and in the preferred embodiment, the door control device 203 is required to keep moving toward the first flange 2031 in a normal state and be limited by the second annular inclined surface 210 of the retainer 202. To achieve this effect, in the preferred embodiment of the present invention, one end of the elastic member 208 is fixedly connected to the bottom surface of the first flange 2031, and the other end is fixedly connected to the top surface of the retainer 202, on this basis, a preset compression deformation amount is given to the elastic member 208, and because the retainer 202 and the outer valve body 201 are threaded to limit, the elastic member 208 overcomes the elastic force generated by the compression elastic deformation thereof and performs a return motion towards the direction of the first flange 2031, and thus, the door control device 203 always maintains a motion trend towards the direction of the first flange 2031 in a normal state, and is limited due to the contact and extrusion of the sealing seat 209 and the second annular inclined surface 210 of the inner wall of the retainer 202, and forms a seal. Thus, the exhaust channel 204 in the exhaust self-checking device 200 is closed in a normal state, that is, the drainage channel 107 is isolated from the outside in a normal state.

Referring back to FIG. 3, it should be appreciated that the condition shown in FIG. 3, i.e., the exhaust self-test device 200 is in a normally closed condition. Looking again at the state of using the exhaust self-checking device 200, that is, the state that the internal exhaust channel 204 is opened, so that the drainage channel 107 is communicated with the outside. Fig. 5 is a state diagram showing a state in which an exhaust passage is opened in the exhaust self-test device shown in fig. 3. Referring to fig. 5, in the use state, a force is applied to the first flange 2031 toward the direction of the second flange 2032, so that the elastic member 208 is further compressed to generate deformation greater than the preset compression deformation amount, and then the gate device 203 moves toward the direction of the second flange 2032, so that the movement trend of the gate device 203 under normal conditions is overcome, that is, the extrusion contact state and the sealing state of the sealing seat 209 and the second annular inclined surface 210 on the gate device 203 are released, so that the exhaust passage 204 in the exhaust self-checking device 200 is opened, and the exhaust passage 204 serves as an intermediate passage to communicate the drainage passage 107 with the outside atmosphere. In this state, referring to fig. 1and 5, it can be seen that the pressure build-up chamber 101 is in communication with the outside atmosphere, and if there is gas in the pressure build-up chamber 101, the gas is discharged through the drainage channel 107 and the exhaust channel 204 in sequence.

In the actual operation process, since the direction of the force applied to the gate control device 203 by the operator is difficult to keep the axis direction of the gate control device 203 coincident, the movement direction of the gate control device 203 may deviate after the force is applied, so that the sealing state is not relieved sufficiently, and the service life of the gate control device 203 is also affected. In view of the above, in another preferred embodiment of the present invention, a structure of a gate device with a lead is provided, and fig. 6 is a cross-sectional view showing a cross-sectional structure of an exhaust self-checking device with a gate device with a "king" shape in another preferred embodiment of the present invention; fig. 7 is a state diagram showing a state in which an exhaust passage is opened in the exhaust self-test device shown in fig. 6. Referring initially to fig. 6, in the preferred embodiment, the gating device 203 is a long straight piece having a cross section in the shape of a "king" when viewed in cross section, and a third flange 2033 is added between the first flange 2031 and the second flange 2032, such that the third flange 2033 is located between the first flange 2031 and the second flange 2032 in the vertical direction, and in the preferred embodiment, the seal seat 209 is located between the third flange 2033 and the second flange 2032 and fixedly connected with the second flange 2032. Referring back to fig. 6, during the movement of the gating device 203 in this embodiment, the third flange 2033 may have a guiding effect on the vertical movement of the gating device 203 in the cage 202, making it difficult to deviate from the preset movement track. Thereby ensuring the release effect of the sealing state and also ensuring the service life of the gate control device 203.

In addition, in order to prevent external dust and silt from entering the pressure build-up cavity 101 through the exhaust self-checking device 200, a dust cover 211 covering the gate control device 203 and the outer valve body 201 is arranged at the top of the gate control device 203, and a gap is left between the dust cover 211 and the fixing piece (outer valve body), so that when the high-pressure gas in the pressure build-up cavity is discharged while preventing pollutants from entering the cavity, the exhaust pressure can be obviously reduced. In other embodiments of the present invention, the inner side surface of the dust cover 211 may be fixedly connected to the first flange 2031 of the door control device 203, so that the operation of the first flange 2031 of the door control device 203 may be converted into the operation of the dust cover 211.

The structure and operation of the exhaust self-checking device 200 are described, and accordingly, the preferred embodiment of the present invention further provides an AMT exhaust self-checking method and an airtight self-checking method based on the exhaust self-checking device.

Firstly speaking, the exhaust self-checking method is that a drainage channel is firstly configured on a clutch electromechanical device in the prior art, one end of the drainage channel is communicated with the atmosphere, and the other end of the drainage channel is communicated with a pipeline between a valve port of a clutch electromechanical device control valve body (electromagnetic device) and a pressure building cavity. Next, the exhaust self-test device described above is disposed at the opening position of the drainage passage. An exhaust channel in the exhaust self-checking device is in butt joint with the drainage channel. And when the exhaust channel is closed in a normal state, the drainage channel is isolated from the outside atmosphere. When it is necessary to check the exhaust gas, the first flange or the dust cap of the door control device is pressed continuously or discontinuously, so that the exhaust passage 204 is opened continuously or intermittently, that is, at this time, the drainage passage 107 is continuously or intermittently communicated with the external atmosphere through the exhaust passage 204, and the gas in the pressure build-up chamber 101 is exhausted.

A further application of the exhaust self-checking method is the clutch electromechanical airtight self-checking method. Firstly, a drainage channel is configured according to the same process, and the exhaust self-checking device is configured on the drainage channel. Fig. 8 is a use state diagram showing a state in which the electromechanical device with self-test clutch shown in fig. 1 checks air tightness. Referring to fig. 8, the exhaust self-checking device 200 is opened first, then the force-bearing guide rod 102 is pushed to compress the piston member 103, and the pressure-building cavity 101 is compressed to the minimum volume, then the gas in the pressure-building cavity 101 is discharged in the process of compressing the piston member 103 to the pressure-building cavity 101, when the pressure-building cavity 101 is compressed to the minimum volume, the exhaust self-checking device 200 is controlled to be closed, under the ideal condition at the moment, if the sealing effect of each sealing member in the cylinder body is good, the piston member 103 in the pressure-building cavity 101 receives the negative pressure of the gas, the negative pressure should be balanced with the elastic force of the return spring 104 in the pressure-building cavity 101 and the thrust of the force-bearing guide rod 102 on the piston member, and then the force-bearing guide rod 102 should keep the position of the piston member in the preset time interval, namely the pressure-building cavity 101 keeps the minimum volume. If the load-bearing guide rod 102 immediately returns to its original position and displaces after the exhaust self-checking device is closed, it means that the stress balance of the piston member 103 is broken, that is, the sealing effect of the sealing member is poor. In this embodiment, the seals within the cylinder include a seal seat 209, a gland 207, and a lip seal on the piston member 103, etc.

The above detailed description of the present invention is provided to facilitate understanding of the method and its core concept, and is intended to enable those skilled in the art to understand the present invention and to implement it accordingly, and is not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims (9)

1. An AMT airtight self-checking method is characterized by comprising the following steps:

S1, configuring a drainage channel with one end communicated with the atmosphere and the other end communicated with a pipeline between a valve port of a clutch electromechanical device control valve body and a pressure building cavity;

Step S2 of configuring an exhaust self-checking device at the opening position of the drainage channel communicated with the atmosphere, wherein an inner cavity of the exhaust self-checking device is in butt joint with the drainage channel, and a normally closed exhaust channel is formed in the exhaust device;

s3, operating the exhaust self-checking device to open the exhaust channel in the exhaust self-checking device and pushing the bearing guide rod of the clutch electromechanical device to compress the pressure build-up cavity to the minimum volume;

S4, operating the exhaust self-checking device to close the exhaust channel in the exhaust self-checking device, and if the bearing guide rod does not return in preset time, ensuring that the air tightness is good; otherwise, the air tightness is poor.

2. The AMT gas tightness self-test method according to claim 1, wherein said exhaust gas self-test device comprises:

the fixing piece is fixedly connected with the channel opening of the drainage channel;

a movable part extending in the inner cavity of the fixed part and capable of moving along the extending direction of the inner cavity of the fixed part, wherein,

Normally, the movable part keeps the movement trend towards the direction of the fixed part and is limited by the fixed part, so that the exhaust channel is closed;

in the use state, the sealing between the movable piece and the fixed piece is released, and then the exhaust channel is opened.

3. The AMT gas tightness self-test method according to claim 2, wherein said exhaust gas self-test device comprises:

The fixing piece is an outer valve body, the outer valve body is fixedly connected with a passage opening of the drainage passage, and the exhaust passage is formed in an inner cavity of the outer valve body;

the retainer is arranged in the inner cavity of the outer valve body and fixedly connected with the wall surface of the exhaust channel;

the movable part is a gating device which extends into the retainer, an elastic part is arranged between the gating device and the retainer, wherein,

The door control device is provided with a sealing seat, the elastic component has a preset deformation quantity, the traction force generated by the deformation quantity enables the door control device to be in a trend of moving towards the elastic component and limiting the sealing seat by the inner wall of the retainer in a normal state, and then the exhaust channel is separated from the drainage channel;

Under the use state, the gate control device overcomes the traction force of the elastic component and moves away from the direction of the elastic component, so that the limit between the sealing seat and the inner wall of the retainer is released, and at the moment, the exhaust channel is communicated with the drainage channel.

4. The AMT hermetic self-test method according to claim 3, wherein,

The inner side wall surface of the outer valve body forms a converged first annular inclined surface, a sealing sleeve is arranged between the inner side wall surface of the outer valve body at the first annular inclined surface and the outer side wall surface of the retainer, and then a seal is formed between the outer valve body and the retainer;

The inner side wall surface of the retainer forms a converging second annular inclined plane, and the sealing seat and the second annular inclined plane are extruded and limited to form a seal in a normal state.

5. The AMT gas tight self test method according to claim 4, wherein said step S3 of operating said gas discharge self test device to open said gas discharge passage therein is to continuously or non-continuously press said gate device against a pulling force of said elastic member.

6. The AMT gas tight self-test method according to claim 5, wherein said gate control device is a long straight member having an i-shaped cross section, and two flanges are formed at two ends of the long straight member, respectively, and are defined as a first flange fixedly connected with said elastic member and a second flange fixedly connected with said sealing seat.

7. The AMT gas tight self test method according to claim 6, wherein said gate means further comprises a third flange, said gate means being an elongated straight member having a cross-section of "king", said third flange being located between said first flange and said second flange in the direction of extension of the gate means, said sealing seat being located between said third flange and said second flange.

8. The AMT gas tightness self-test method according to claim 7, wherein in said step S4, after said exhaust self-test device is operated to close said exhaust passage inside, the negative pressure of the gas applied to said piston member in said pressure build-up chamber is balanced with the elastic force of said return spring in said pressure build-up chamber and the thrust force of said load-carrying guide rod.

9. An AMT clutch electro-mechanical device with self-test for exhaust self-test by adopting the AMT airtight self-test method as defined in any one of claims 1 to 8, wherein an exhaust self-test device is provided on said clutch electro-mechanical device, which is in butt joint with a drainage channel of said clutch electro-mechanical device, said exhaust self-test device comprising:

the outer valve body is fixedly connected with the passage opening of the drainage passage, and an inner cavity of the outer valve body is defined as an exhaust passage;

the retainer is arranged in the inner cavity of the outer valve body and fixedly connected with the wall surface of the exhaust channel;

the door control device stretches into the retainer, an elastic component is arranged between the door control device and the retainer, wherein,

The door control device is provided with a sealing seat, the elastic component has a preset deformation quantity, the traction force generated by the deformation quantity enables the door control device to be in a trend of moving towards the elastic component and limiting the sealing seat by the inner wall of the retainer in a normal state, and then the exhaust channel is separated from the drainage channel;

Under the use state, the gate control device overcomes the traction force of the elastic component and moves away from the direction of the elastic component, so that the limit between the sealing seat and the inner wall of the retainer is released, and at the moment, the exhaust channel is communicated with the drainage channel.