CN112268077A - AMT clutch electromechanical device with low-voltage release - Google Patents

AMT clutch electromechanical device with low-voltage release Download PDF

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Publication number
CN112268077A
CN112268077A CN202011244224.9A CN202011244224A CN112268077A CN 112268077 A CN112268077 A CN 112268077A CN 202011244224 A CN202011244224 A CN 202011244224A CN 112268077 A CN112268077 A CN 112268077A
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CN
China
Prior art keywords
pressure
gas
output end
release
inner cavity
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Pending
Application number
CN202011244224.9A
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Chinese (zh)
Inventor
王鲜艳
王新泽
李传武
潘银斌
孙建敏
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Ruili Group Ruian Auto Parts Co Ltd
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Ruili Group Ruian Auto Parts Co Ltd
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Priority to CN202011244224.9A priority Critical patent/CN112268077A/en
Publication of CN112268077A publication Critical patent/CN112268077A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0221—Valves for clutch control systems; Details thereof

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Safety Valves (AREA)

Abstract

The invention provides an AMT clutch electromechanical device with low-pressure release, which comprises a pressure building cavity and a piston piece in the pressure building cavity, wherein a low-pressure release device is arranged on the piston piece, the low-pressure release device comprises an input end and an output end, the input end is communicated with the pressure building cavity, the output end is communicated with an exhaust channel of the clutch electromechanical device, and if the pressure of the input end is smaller than a first preset air pressure PdWhen the pressure is built, the output end is kept in an open state, and the gas in the pressure building cavity is exhausted from the output end; if the pressure at the input end is greater than the second preset air pressure PgWhen the pressure of the gas is less than or equal to a set value, the output end is closed, the gas is stopped to be exhausted at the time, and the unloading can be realized when the gas pressure is less than or equal to the set valueThe low-pressure release structure closes the overflow port when the pressure is more than or equal to another set value, so as to solve the technical problems that the gas low-pressure unloading release process is uncontrollable, and the cylinder body is exploded in the assembly and maintenance process of the overflow valve.

Description

AMT clutch electromechanical device with low-voltage release
Technical Field
The invention belongs to the technical field of clutch electromechanics, and particularly relates to an AMT clutch electromechanical device with low-pressure release.
Background
In the pneumatic field, the pneumatic logic elements that effect pressure range output control typically include pressure relief valves, sequence valves, and relief valves. The pressure reducing valve is a logic element which controls the output of the gas when the pressure of the gas is less than a set value and shuts off the flow when the pressure of the gas is greater than the set value; sequence valves are logic elements that control the flow of gas to achieve output when the gas is above a set point and to shut off when the gas is below the set point. It is obvious that the pressure reducing valve or the sequence valve can only control the gas to realize output in a one-way mode with a set value as a boundary, namely, certain limitation exists in the output control.
The relief valve is provided for realizing gas range output, and is characterized in that a discharge port with an overflow function is additionally arranged on the basis that a pressure reducing valve limits high pressure, and the discharge port performs overflow unloading when a gas pressure value is higher than a set highest pressure threshold, in other words, when the gas pressure value reaches the highest pressure threshold, the relief valve realizes the release of overflow energy.
However, the overflow valve in the prior art still has a single selection of a pressure release control range, the overflow port unloads a large pressure, but the unloading process of the large gas pressure has certain potential safety hazards, and release and closure cannot be selected in different interval ranges according to specific unloading release requirements. For example, in the assembly and maintenance process of the underflow valve in the prior art, due to the structural characteristics, the underflow valve is lack of a structure for releasing overflow energy in the maintenance process, so that great potential safety hazards exist in the maintenance process, and even the cylinder body is exploded.
In view of this, the prior art should be improved to solve the technical problem that the gas relief valve in the prior art cannot achieve the unloading effect when the gas pressure is less than or equal to a certain set value, and close the overflow port when the gas pressure is greater than or equal to another set value.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the AMT clutch electromechanical device with the low-pressure release function, which solves the problems that the low-pressure unloading release process of the gas in the pressure building cavity is difficult to control when the gas pressure is overlarge and potential safety hazards exist.
In order to solve the technical problems, the AMT clutch electromechanical device with low-pressure release comprises a pressure building cavity and a piston piece in the pressure building cavity, wherein a low-pressure release device is arranged on the piston piece and comprises an input end and an output end, the input end is communicated with the pressure building cavity, the output end is communicated with an exhaust channel of the clutch electromechanical device, and if the pressure of the input end is smaller than a first preset air pressure PdWhen the pressure is built, the output end is kept in an open state, and the gas in the pressure building cavity is exhausted from the output end; if the pressure at the input end is greater than the second preset air pressure PgAnd when the air is exhausted, the output end is closed, and the air is exhausted from the output end at the moment.
Preferably, the low pressure release device includes: the fixing piece is a hollow piece, openings at two ends of the fixing piece are respectively communicated with the input end and the output end, the fixing piece forms a two-stage inner cavity, the two-stage inner cavity is respectively defined as a first inner cavity and a second inner cavity according to the direction from the input end to the output end, and a first limiting surface is formed at the connecting position of the first inner cavity and the second inner cavity; the movable piece is arranged in the inner cavity of the fixed piece in a sliding manner; the elastic component is arranged in the second inner cavity, the elastic component is compressed when the moving piece slides until the sliding of the moving piece is limited by the first limiting surface, wherein the inner diameter of the first inner cavity is larger than that of the second inner cavity, a gap is formed between the moving piece and the first inner cavity, and the gap is defined as a gas area; a throttling part extending along the sliding direction of the movable piece and a release passage extending along the radial direction of the movable piece are formed in the movable piece, and when gas passes through the release passage, if the gas pressure is less than the first preset gas pressure PdWhile the gas passes throughThe throttling part is discharged after passing through the release channel and the gas domain in sequence; if the gas pressure is greater than the second preset gas pressure PgAnd when the movable piece slides towards the output end under the action of the gas pressure until the movable piece is limited by the first limiting surface to form sealing, and the output end stops outputting.
Still further preferably, one end of the movable member extends outward to form a protruding portion, the protruding portion is in abutting contact with the elastic member, the shape and size of the protruding portion are consistent with the inner contour of the second inner cavity, and when the movable member slides, the protruding portion slides in the second inner cavity until the sliding of the movable member is limited by the first limiting surface.
Preferably, the movable member is a multi-stage T-shaped slider, a groove extending along the circumferential direction of the side wall of the slider is formed on the side wall of the slider, a first sealing member is disposed in the groove in an inner ring manner, the slider further includes a second sealing member located between the movable member and the first limiting surface, the second sealing member moves in the second inner cavity along with the movable member, and when the movable member is limited by the first limiting surface, the second sealing member forms a seal between the gas region and the first limiting surface.
Still further preferably, when the gas pressure is less than the first preset gas pressure PdWhen the gas passes through the throttling part, the gas passes through the release channel and the gas domain and then is discharged, at the moment, the second sealing element is not in contact with the first limiting surface, or the second sealing element is in non-pressure contact with the first limiting surface.
Still preferably, the fixing member is provided with a limiting cover, and the limiting cover is provided with a counter bore matched with the opening of the fixing member.
Preferably, the first preset air pressure PdIn the range of 100kPa to 150kPa, the second preset air pressure PgIn the range of 160kPa to 200 kPa.
Compared with the prior art, the invention has the following beneficial technical effects due to the adoption of the technical scheme:
1. the invention is based on the uncontrollable technical problem of low pressure unloading release of a gas overflow valve in a clutch electromechanical device in the prior art, and provides a low pressure release structure which can realize unloading when the gas pressure is less than or equal to a certain set value and close an overflow port when the gas pressure is more than or equal to another set value;
2. the inner cavity of the fixing part forms two-stage inner diameter, namely two-stage inner cavity, which respectively corresponds to the input end and the output end, a table-shaped flange is formed between the two-stage inner cavity, and then a first limiting surface is formed on the surface of the table-shaped flange; the movable part can move in the inner cavity of the fixed part, a gas area is formed between the outer wall of the movable part and the inner wall of the fixed part, the movable part is provided with a throttling part and a release channel, and when the gas pressure is smaller than a first preset gas pressure PdWhen the gas is exhausted, the gas passes through the throttling part and the release channel in sequence and is finally exhausted from the output end or the release port; when the pressure is higher than the second preset pressure PgWhen the gas pressure is applied to the movable piece, the movable piece slides towards the output end until the movable piece is limited by the first limiting surface, and the sealing piece between the movable piece and the first limiting surface forms sealing between the gas area and the first limiting surface, namely, the output end stops outputting;
3. in an application scene, when the gas pressure returns to a normal state, the release state can be recovered; in order to meet the output requirement, an elastic component can be arranged in a second inner cavity of the fixed part and is abutted against the moving part, namely, when the moving part slides, the elastic component is compressed to generate elastic deformation, and the direction of the elastic force generated by the elastic deformation is opposite to the sliding direction of the moving part, so that when the pressure of the input end is greater than a second preset air pressure, the moving part keeps a downward movement trend due to the gas pressure from the input end, can always overcome the return elastic force generated by the elastic deformation of the elastic component, slides until the position is limited by the first limiting surface, and keeps a state of being attached to the first limiting surface; when the gas pressure at the input end is reduced to be less than a second preset pressure, the return elastic force generated by the elastic component enables the limit sealing between the moving part and the first limit surface to be released, so that the low-pressure release output state is recovered;
4. the movable piece is arranged into a multi-stage structure and comprises a protruding portion which is formed by extending outwards, the shape and the size of the protruding portion are consistent with the inner contour of the second inner diameter, and when the movable piece slides, the protruding portion can slide in the second inner diameter until the sliding of the movable piece is limited by the first limiting surface; the side surface of the protruding part can form a constraint limiting surface which can be in contact with the elastic component, so that a part of the protruding part can extend into the elastic component, the positioning of the pressing process and the returning process of the elastic component is more accurate, and the service life of the elastic component is prolonged;
5. the stop of the output end is realized by a sealing structure, the sealing structure comprises two parts, namely a first sealing element and a second sealing element, the first sealing element is positioned in a circumferentially extending groove formed on the side wall of the moving part and can consolidate the throttling part of the moving part, so that the flow of a gas area is limited; the second sealing element is arranged in the first inner cavity of the fixed element, the height of the second sealing element in the vertical direction is positioned between the moving element and the first limiting surface, and the second sealing element can be wound on the protruding part of the moving element or directly fixedly connected with the bottom of the moving element; when the gas pressure is smaller than the first preset gas pressure, the gas is discharged from the output end, and at the moment, the second sealing element is not in contact with the first limiting surface or is in no pressure contact with the first limiting surface; when the gas pressure is greater than the second preset gas pressure, the second sealing element is in contact with the moving element and the first limiting surface and deforms due to extrusion of the moving element and the first limiting surface, so that sealing is formed between the gas area and the first limiting surface, and the output end is finally cut off.
Drawings
Fig. 1 is a sectional view showing a sectional structure of a low pressure relief apparatus according to a first embodiment of the present invention;
FIG. 2 is a state diagram showing a state where the release port of the low pressure release device described in the first embodiment shown in FIG. 1 is closed;
fig. 3 is a sectional view showing a sectional structure of a low pressure relief apparatus according to a second embodiment of the present invention;
fig. 4 is a sectional view showing a sectional structure of a low pressure relief apparatus according to a third embodiment of the present invention;
FIG. 5 is a state diagram showing a state where the release port of the low pressure release device described in the third embodiment shown in FIG. 4 is closed;
fig. 6 is a sectional view showing a sectional structure of a low pressure relief apparatus according to a fourth embodiment of the present invention;
FIG. 7 is a state diagram showing a state where the release port of the low pressure release device described in the fourth embodiment shown in FIG. 6 is closed;
figure 8 is a cross-sectional view showing the cross-sectional structure of an AMT clutch electro-mechanical device with low pressure release in the fifth embodiment of the present invention.
Detailed Description
An embodiment of an AMT clutch electro-mechanical device with low pressure release according to the present invention will be described with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not to scale and like reference numerals refer to 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 names or different parameters, and it is understood that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and the descriptions thereof in the following embodiments are omitted.
The preferred embodiment of the invention is provided aiming at the technical problems that the low-pressure unloading and releasing process of gas in a pressure building cavity in the clutch electromechanical device in the prior art is uncontrollable and the cylinder body can be exploded in the assembling and overhauling process of an overflow valve. In order to solve the technical problem that the low-pressure unloading release process is uncontrollable, the invention tries to provide a pressure-measured gas pressureAn output structure that remains unloaded when less than a certain value and stops releasing when greater than a certain value. In other words, the pressure is a pressure between 0 and PdHold unload (output held at output) in the range of PgTo an infinite range to stop the released (output off) output configuration.
In order to solve the technical problem, the invention introduces a low-pressure release device into the clutch electromechanical device. The low pressure release device and its operation scenario according to several different preferred embodiments of the present invention will be described with reference to the following embodiments.
Example one
Fig. 1 is a sectional view showing a sectional structure of a low pressure relief apparatus according to a first embodiment of the present invention. Referring to fig. 1, in the preferred embodiment of the present invention, the low pressure relief apparatus includes an input end 100 and an output end 200, and gas is input from the input end 100 and output from the output end 200.
The device comprises a stationary member 10 and a moveable member 20 slidable within the stationary member 10. The hollow fixing member 10 has openings at both ends corresponding to the input end 100 and the output end 200, respectively. The side of the fixing member 10 adjacent to the input end 100 is fixed to the limit by the limit cover 30. The limit cover 30 is formed with a counter bore 31 structure matching with an opening at one end of the fixing member 10, the counter bore 31 is used for realizing contact and relative fixation with the fixing member 10, and the limit cover 30 is fixedly connected by means of external thread screw connection and the like. In different preferred embodiments of the present invention, the fixing manner of the fixing element 10 and the position-limiting cover 30 may be various, and the position-limiting cover 30 described herein is only an exemplary structure, and as long as a structure capable of achieving relative fixing after contact can be used for fixing the fixing element 10, embodiments of the present invention should not be limited by the fixing manner of the fixing element 10.
With continued reference to fig. 1, the inner cavity of the hollow fixing member 10 is divided into two stages according to the length of the inner diameter, and for convenience of description, the inner cavities corresponding to the two stages of inner diameters are respectively defined as a first inner cavity 11 and a second inner cavity 12 according to the direction from the input end 100 to the output end 200. As can be seen from fig. 1, in the preferred embodiment, the first lumen 11 is a portion of the lumen near the input end 100, the second lumen 12 is a portion of the lumen near the output end 200, and the length of the inner diameter of the first lumen 11 is greater than the length of the inner diameter of the second lumen 12. From the perspective of the inner cavity structure of the fixing member 10, the two-stage inner cavities with different inner diameters form a circumferentially extending table-shaped flange at the connecting position of the two inner cavities, and the table surface of the table-shaped flange is defined as the first limiting surface 13.
Looking again at the moveable member 20. In the preferred embodiment, the moveable member 20 is movably disposed within the first interior cavity 11. The outline shape of the movable member 20 is consistent with the outline shape of the first inner cavity 11, and both of the movable member 20 and the first inner cavity 11 are cylindrical, so that when the movable member 20 is disposed in the first inner cavity 11, a cylindrical gap is formed between the movable member 20 and the stationary member 10, and the gap is defined as a gas area 21. Turning to the interior of the moveable member 20, a throttle 22 and a relief passage 23 are formed therein. The extending direction of the throttle portion 22 coincides with the sliding direction of the movable piece 20, and the extending direction of the release passage 23 coincides with the extending direction of the movable piece 20, in other words, the extending direction of the release passage 23 is perpendicular to the extending direction of the throttle portion 22.
With continued reference to fig. 1, in fig. 1, the movable member 20 abuts against the counter bore limiting surface of the limiting cover 30, and the state shown in fig. 1 may be defined as an initial state, so that when gas flows through in the initial state, at this time, the gas area 21 cannot directly flow into the gas area 21 after being input from the input end 100 because the limiting is formed between the movable member 20 and the limiting cover, but flows into the release passage 23 through the throttling portion 22, then flows into the second inner cavity 12 of the movable member 20 through the gas area 21, and finally flows out from the output end 200 to realize unloading and releasing. Then, as the gas pressure at the input end 100 increases, the gas pressure on the movable element 20 also increases, and under the pressure of the gas, the movable element 20 slides toward the output end 200, so that the limit contact state between the movable element and the limit cover 30 is released, at this time, a part of the gas is still released through the throttling portion 22 and the release passage 23, and meanwhile, a part of the gas is directly discharged from the gas area 21 to the release passage 23 or the second inner cavity 12 without passing through the throttling portion 22, and finally discharged to realize unloading release. In the above two states, the output end200 satisfy the normal release condition, and it is assumed that when the pressure at the input end 100 is further increased and increased to the gas pressure, the movable member 20 will stop when sliding to contact with the first limiting surface 13, and if the gas pressure, which just enables the movable member 20 to slide to contact with the first limiting surface 13, is defined as the first preset pressure PdThat is, when the gas pressure at the input end 100 is less than the first preset gas pressure PdThen, the low pressure release apparatus according to the preferred embodiment of the present invention maintains the unloading release state. First preset air pressure PdThe value range of (1) is 100kPa to 150kPa, and the specific value of the first preset air pressure can be set according to the rated maximum output pressure.
Fig. 2 is a state diagram showing a state where the release port of the low pressure release device described in the first embodiment described in fig. 1 is closed. Referring to fig. 2, as described above, when the gas pressure at the input end 100 is further increased to push the movable member 20 into contact with the first stopper surface 13 and form a sealed stopper, the contact stopper between the movable member 20 and the first stopper surface 13 closes the gas area 21, so that the gas can no longer be discharged into the second inner cavity 12, and the output end 200 is closed. If the gas pressure at this time is defined as the second preset gas pressure PgThat is, when the gas pressure at the input end 100 is greater than the second predetermined gas pressure PgThen, the low pressure release device according to the preferred embodiment of the present invention stops the unloading release.
It should be noted that, in conjunction with fig. 1 and 2, it can be seen that, although in the first preferred embodiment, the extension directions of the throttling portion 22 and the releasing passage 23 are set to be perpendicular to each other, in other embodiments, it is only necessary to communicate the inlet of the throttling portion 22 with the input end 100 and communicate the outlet with the releasing passage 23, and for the releasing passage 23, it is only necessary to communicate at least one end of the releasing passage 23 with the gas domain 21, and no particular limitation is imposed on the extension direction of the releasing passage 23.
The low pressure release apparatus of the first embodiment shown in fig. 1 and 2 can be applied to a scenario where the requirement for strict control of the gas pressure at the input end is met, that is, a scenario where the output end is immediately cut off when the gas pressure is greater than a predetermined value.When the first embodiment of the present invention is applied to the scene, the gas pressure is less than the first predetermined pressure PdIf the condition of (1) is defined as a normal release state, the low-voltage release device keeps outputting in the normal release state; when the gas pressure is once as high as a certain node, namely the second preset gas pressure PgAnd when the low-pressure release device is required to stop outputting. The process can be applied to the application scene with strict control on the gas pressure at the input end, and the input and output safety is improved.
Example two
In the first embodiment, after the output of the output end is stopped, the gas pressure at the input end needs to be controlled, and the movable member needs to be returned to the initial state, so that the movable member can be continuously used. When the low-pressure release device is applied to release control of the piston member in the cylinder body, for example, it is not practical to repeatedly disassemble the cylinder body and then return the movable member. Thus, in the second embodiment, a return mechanism is provided on the basis of the first embodiment, so that when the gas pressure at the input end is recovered to be less than the first preset gas pressure PdWhen the unloading release state is reached, the movable piece can return to the original position, and the output end of the release device can be switched to the unloading release state again.
Fig. 3 is a sectional view showing a sectional structure of the low pressure relief apparatus according to the second embodiment of the present invention. Referring to fig. 3, the low pressure relief apparatus according to the second embodiment of the present invention further includes an elastic member 40, wherein the elastic member 40 is located in the second cavity 12 of the stationary member 10, one end of the elastic member 40 is fixedly connected to the bottom of the stationary member 10, and the other end of the elastic member 40 is in contact with the bottom of the movable member 20, so that the elastic member 40 is compressed to generate elastic deformation during the sliding process of the movable member 20, and the direction of the elastic force generated by the elastic deformation is opposite to the sliding direction of the movable member 20.
Referring to fig. 3, in the state shown in fig. 3, the movable member 20 contacts with the first position-limiting surface 13 to form a position-limiting state, and the contact position-limiting state between the movable member 20 and the first position-limiting surface 13 closes the gas area 21, so that the output end 200 stops the unloading release at this time, that is, the release state is released. Obviously, when the gas pressure at the input end 100 is reduced to be less than the first preset gas pressure PdWhen the elastic component is in useThe elastic force generated by the elastic deformation of the movable member 40 is restored to make the movable member 20 slide towards the input end 100, so that the position-limiting sealing between the gas area 21 and the first position-limiting surface 13 is released, and then the gas flows to the second inner cavity again and is discharged, that is, the release device is in the unloading release state again.
EXAMPLE III
However, the arrangement of the elastic member 40 as shown in fig. 3 is unstable in the connection of the elastic member 40, and the elastic member 40 is damaged and deformed during repeated pressing and restoring processes, which may eventually disable the restoring process of the movable member 20.
In view of this, the third embodiment further improves the connection manner between the movable element 20 and the elastic member 40 on the basis of the second embodiment. Fig. 4 is a sectional view showing a sectional structure of the low pressure relief apparatus according to the second embodiment of the present invention. Fig. 5 is a state diagram showing a state where the release port of the low pressure release device described in the third embodiment shown in fig. 4 is closed. Referring to fig. 4, in the third embodiment, the movable element 20 is configured as a three-stage columnar structure, which is based on the movable elements in the first and second embodiments, one end of the movable element 20 extends outward to form a protruding portion 24, and the protruding portion 24 may further form a constraint limiting surface 241, so that, in the third embodiment, the movable element 20 is configured as a three-stage or even multi-stage columnar structure, that is, one end of the elastic component 40, which is not fixedly connected to the bottom of the fixed element 10, is fixedly connected to the constraint limiting surface 241 on the protruding portion 24. By configuring the shape of the outer contour of the protrusion 24 to be identical to the inner contour of the elastic member 40, referring to fig. 4, the protrusion 24 partially protrudes into the elastic member 40, so that the pressing and returning processes of the elastic member 40 are smoother, the positioning is accurate, and the service life of the elastic member is prolonged to a certain extent.
In the initial state shown in fig. 4, the protrusion 24 generates a predetermined amount of compression on the elastic member 40, or the elastic member 40 itself is set to have a predetermined amount of compression, so that in the initial state, the elastic force generated by the elastic member 40 can form a limit seal between the movable member 20 and the counter bore 31 structure of the limit cover 30. The profile of the projection 24 also corresponds to the profile of the second lumen 12 of the fixing element 10. Referring again to fig. 5, that is, when the movable member 20 slides, the protrusion 24 may extend into the second inner cavity 12 until the sliding of the movable member 20 is limited by the first limiting surface 13. It can be seen that the projection 24 is provided for the purpose of providing a lead to the sliding of the mobile element 20 in the second internal cavity 12 of the stationary element 10, so as to make the movement of the mobile element 20 in the stationary element 10 smoother.
Example four
Fig. 6 is a sectional view showing a sectional structure of a low pressure relief apparatus according to the fourth embodiment of the present invention. Fig. 7 is a state diagram showing a state where the release port of the low pressure release device described in the fourth embodiment shown in fig. 6 is closed. In the fourth embodiment, a further improvement is made on the basis of the third embodiment, and referring to fig. 6, in the low pressure release device described in the fourth embodiment, in addition to the movable member being provided with the multi-stage columnar structure, a side wall of one end of the movable member 20 is recessed toward an axial direction thereof, so that a groove extending along a circumferential direction of the side wall thereof is formed, and a first sealing member 50 is disposed in an inner ring of the groove. Thus, when the movable member 20 slides within the inner cavity of the stationary member 10, the first sealing member 50 is located between the inner wall surface of the stationary member 10 and the outer wall surface of the movable member 20.
Accordingly, a second sealing element 60 is arranged in the first interior 11 of the stationary part 10, the second sealing element 60 being located between the movable part 20 and the first stop surface 13 in the vertical direction. In practical conditions, the second sealing element 60 may be sleeved on the protrusion 24 of the moving element 20 and slide along with the moving element 20, or the second sealing element 60 may be directly adhered and fixed to the end surface of the moving element 20 facing the first limiting surface 13. As shown in fig. 6 and 7, in the fourth embodiment of the present invention, the second sealing member 60 is non-fixedly sleeved with the protrusion 24 of the movable member 20. Referring again to fig. 7, the second sealing member 60 moves along with the movable member 20, and when the low pressure release apparatus is in the unloading release state, the second sealing member 60 is not in contact with the first stopper surface 13, or is in contact with the first stopper surface without pressure; when the movable element 20 is limited by the first limiting surface 13 and presses the second sealing element 60, the second sealing element 60 forms a seal between the gas area 21 and the first limiting surface 13.
Incidentally, in the ideal model, the first predetermined air pressure P is set in the fourth embodimentdShould be exactly equal to the second preset air pressure PgEqual, however, in practice, the first preset gas pressure P is due to the gas field, the clearance between the workpieces, and possibly the squeeze-sealing of the seal, among other factorsdIs often not equal to the second predetermined pressure PgAre equal in size. Then, it can be understood that the second preset air pressure PgShould be greater than a first predetermined pressure PdIn the preferred embodiment of the present invention, the first predetermined pressure P is setdOn the basis of the second preset air pressure PgThe value range of (A) is set to be 160kPa to 200 kPa.
EXAMPLE five
The low-pressure release device shown in the first to fourth embodiments is suitable for output of different gases such as gas flow and liquid flow, and in the fifth embodiment, the case where the low-pressure release device is applied to an AMT clutch electromechanical mechanism, that is, an AMT clutch electromechanical mechanism equipped with the low-pressure release device is described. Figure 8 is a cross-sectional view showing the cross-sectional structure of an AMT clutch electro-mechanical device with low pressure release in the fifth embodiment of the present invention. In the fifth embodiment, as shown in fig. 8, the low pressure release device 300 is disposed on the piston member 400 of the clutch electromechanical mechanism and is located in the pressure buildup chamber 500 of the clutch electromechanical mechanism, and at this time, the input end of the low pressure release device is communicated with the pressure buildup chamber 500, and the output end thereof is communicated with the exhaust passage 600 of the clutch electromechanical mechanism. When the pressure in the pressure building chamber 500 is lower than the first preset pressure, the gas in the pressure building chamber 500 is slowly released from the exhaust passage 600, and when the pressure in the pressure building chamber 500 is higher than the second preset pressure, the unloading release is stopped.
The present invention has been described in detail, and the embodiments are only used for understanding the method and the core idea of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and to implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (7)

1. An AMT clutch electromechanical device with low pressure release, which comprises a pressure building cavity and a piston part in the pressure building cavity, and is characterized in that the piston part is provided with a low pressure release device, the low pressure release device comprises an input end and an output end, the input end is communicated with the pressure building cavity, the output end is communicated with an exhaust channel of the clutch electromechanical device, wherein,
if the pressure at the input end is less than the first preset air pressure PdWhen the pressure is built, the output end is kept in an open state, and the gas in the pressure building cavity is exhausted from the output end;
if the pressure at the input end is greater than the second preset air pressure PgAnd when the air is exhausted, the output end is closed, and the air is exhausted from the output end at the moment.
2. The AMT clutch-to-electro-mechanical device with low pressure release of claim 1, wherein the low pressure release means comprises:
the fixing piece is a hollow piece, openings at two ends of the fixing piece are respectively communicated with the input end and the output end, the fixing piece forms a two-stage inner cavity, the two-stage inner cavity is respectively defined as a first inner cavity and a second inner cavity according to the direction from the input end to the output end, and a first limiting surface is formed at the connecting position of the first inner cavity and the second inner cavity;
the movable piece is arranged in the inner cavity of the fixed piece in a sliding manner;
an elastic component arranged in the second inner cavity, wherein the elastic component is compressed when the movable piece slides until the sliding of the movable piece is limited by the first limiting surface,
the inner diameter of the first inner cavity is larger than that of the second inner cavity, a gap is formed between the movable piece and the first inner cavity, and the gap is defined as a gas area;
the movable member is formed with a throttle portion extending in a sliding direction thereof and a relief passage extending in a radial direction thereof, and when gas passes through the relief passage, if a gas pressure is smallAt the first preset air pressure PdWhen the gas passes through the throttling part, the gas passes through the release channel and the gas area in sequence and then is discharged; if the gas pressure is greater than the second preset gas pressure PgAnd when the movable piece slides towards the output end under the action of the gas pressure until the movable piece is limited by the first limiting surface to form sealing, and the output end stops outputting.
3. The AMT clutch-electro-mechanical device with low pressure release of claim 2, wherein one end of the movable member extends outward and forms a protrusion, the protrusion contacts against the elastic member, the protrusion has a shape and size corresponding to the inner contour of the second cavity, and when the movable member slides, the protrusion slides in the second cavity until the sliding of the movable member is limited by the first limiting surface.
4. The AMT clutch-electro mechanical device with low pressure release of claim 3, wherein said movable member is a multi-stage "T" shaped slider having sidewalls that are recessed toward the axial center and defining a groove extending circumferentially along the sidewalls, the groove having a first seal disposed circumferentially therein, wherein,
the gas sealing device further comprises a second sealing element, the second sealing element is located between the moving element and the first limiting surface, the second sealing element moves in the second inner cavity along with the moving element, and when the moving element is limited by the first limiting surface, the second sealing element forms sealing between the gas area and the first limiting surface.
5. The AMT clutch electro-mechanical device with low pressure release of claim 4, wherein when gas pressure is less than said first preset gas pressure PdWhen the gas passes through the throttling part, the gas passes through the release passage and the gas area in sequence and then is discharged,
the second sealing element is not in contact with the first limiting surface, or the second sealing element is in non-pressure contact with the first limiting surface.
6. The AMT clutch electro-mechanical device with low pressure release of claim 5, wherein said mount is provided with a limit cap having a counter bore formed therein matching the opening of said mount.
7. The AMT clutch electro-mechanical device with low pressure release of any one of claims 1 to 6, wherein the first preset air pressure PdIn the range of 100kPa to 150kPa, the second preset gas pressure Pg is in the range of 160kPa to 200 kPa.
CN202011244224.9A 2020-11-10 2020-11-10 AMT clutch electromechanical device with low-voltage release Pending CN112268077A (en)

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Cited By (1)

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WO2014125012A1 (en) * 2013-02-14 2014-08-21 Sidel Participations Equipment for forming containers by means of blow molding comprising an improved device for controlling a valve for dispensing the blow-molding fluid
CN205113318U (en) * 2015-08-26 2016-03-30 瑞立集团瑞安汽车零部件有限公司 Exhaust brake valve with internal respiration structure
CN105889562A (en) * 2016-05-27 2016-08-24 王永球 Piston type explosion-proof and water-proof ventilation valve
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Publication number Priority date Publication date Assignee Title
US20030172805A1 (en) * 2002-03-12 2003-09-18 Norbert Lissel Valve device and a control cylinder
WO2014125012A1 (en) * 2013-02-14 2014-08-21 Sidel Participations Equipment for forming containers by means of blow molding comprising an improved device for controlling a valve for dispensing the blow-molding fluid
CN205113318U (en) * 2015-08-26 2016-03-30 瑞立集团瑞安汽车零部件有限公司 Exhaust brake valve with internal respiration structure
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