CN111927643A - Linear motion component initial installation position positioning and motion limit position limiting device - Google Patents

Linear motion component initial installation position positioning and motion limit position limiting device Download PDF

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Publication number
CN111927643A
CN111927643A CN202010451279.0A CN202010451279A CN111927643A CN 111927643 A CN111927643 A CN 111927643A CN 202010451279 A CN202010451279 A CN 202010451279A CN 111927643 A CN111927643 A CN 111927643A
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CN
China
Prior art keywords
linear motion
pin shaft
pushing
support block
motion component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010451279.0A
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Chinese (zh)
Inventor
白艳琨
刘金楠
程振璞
王永卫
牛志刚
王健
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Beijing Power Machinery Institute
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Beijing Power Machinery Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Power Machinery Institute filed Critical Beijing Power Machinery Institute
Priority to CN202010451279.0A priority Critical patent/CN111927643A/en
Publication of CN111927643A publication Critical patent/CN111927643A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/06—Varying effective area of jet pipe or nozzle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/78—Other construction of jet pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K7/00—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
    • F02K7/10—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof characterised by having ram-action compression, i.e. aero-thermo-dynamic-ducts or ram-jet engines

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Plates (AREA)

Abstract

The invention discloses a device for positioning the initial installation position of a linear motion component and limiting the movement limit position, which comprises: the fixed plate, the limiting support block and the pin pushing device are arranged on the fixed plate; the pushing pin shaft device is arranged on the fixing plate, and a pin shaft of the pushing pin shaft device penetrates through the fixing plate; the pushing pin shaft device and the linear motion component are respectively positioned at two opposite sides of the fixed plate; the first side surface of the limiting support block is fixed on the linear motion component and moves synchronously with the linear motion component; a second side surface of the limiting support block, which is parallel to and opposite to the fixed plate, is lower than the upper end surface of the linear motion member, and a step is formed between the second side surface and the upper end surface of the linear motion member; the invention can realize the positioning of the initial installation position of the linear motion component and the limiting of the motion limit position by matching the limiting support block with the pin shaft of the pin shaft pushing device.

Description

Linear motion component initial installation position positioning and motion limit position limiting device
Technical Field
The invention belongs to the technical field of adjustable nozzles of ramjet engines, and particularly relates to a device for positioning an initial mounting position and limiting a movement limit position of a linear movement component.
Background
The adjustable nozzle is an important group of components of the ramjet, controls the working state of the engine by adjusting the throat area of the nozzle, and is one of the most main control variables of the ramjet. In the variable nozzle of the partial ramjet engine, a linear motion component exists, and the initial installation position and the motion limit position of the component do not coincide and are often separated by a certain distance for special purposes. The initial position of the linear motion component is related to the maximum nozzle throat area which can be reached by the adjustable nozzle, and the movement limit position is related to the transition throat area of the adjustable nozzle, which is one of the most important parameters and must be ensured, but the function can not be realized by the existing device at present.
Disclosure of Invention
In view of this, the invention provides a device for positioning an initial installation position and limiting a movement limit position of a linear movement member, which can realize positioning of the initial installation position and limiting of the movement limit position of the linear movement member by matching a limiting support block with a pin shaft of a push pin shaft device.
The invention is realized by the following technical scheme:
a linear motion member initial installation position locating and movement limit position limiting device comprising: the fixed plate, the limiting support block and the pin pushing device are arranged on the fixed plate;
the linear motion component to be limited at the limit position can perform linear reciprocating motion along the axial direction of the ramjet;
the pushing pin shaft device is an initiating explosive device or an elastic device with a spring, the pushing pin shaft device is provided with a pin shaft extending out of the shell, and the extending length of the pin shaft can be adjusted;
the fixed plate is part of a ramjet variable nozzle housing or part of an aircraft housing;
the overall connection relationship is as follows: the pushing pin shaft device is arranged on the fixing plate, and a pin shaft of the pushing pin shaft device penetrates through the fixing plate; the pushing pin shaft device and the linear motion component are respectively positioned at two opposite sides of the fixed plate, namely, the pin shaft of the pushing pin shaft device and the linear motion component are positioned at the same side of the fixed plate;
the first side surface of the limiting support block is fixed on the linear motion component and moves synchronously with the linear motion component; a second side surface of the limiting support block, which is parallel to and opposite to the fixed plate, is lower than the upper end surface of the linear motion member, and a step is formed between the second side surface and the upper end surface of the linear motion member;
at the initial installation position of the linear motion component, the end surface of a pin shaft of the pin shaft pushing device is abutted against the second side surface of the limiting support block, and the pin shaft is abutted against a step between the limiting support block and the linear motion component, so that the initial installation position of the linear motion component is positioned;
at the movement limit position of the linear movement component, the length of the pin shaft pushing device is lengthened, the pin shaft of the pin shaft pushing device is abutted against the end face, opposite to the first side face, of the limiting support block, and the linear movement component is limited to move towards the direction of the limiting support block.
Furthermore, the limiting support block is of an L-shaped block-shaped structure, and the L-shaped limiting support block is fixed on the linear motion member after being turned clockwise by 90 degrees.
Further, the distance between the initial installation position of the linear motion component and the limit position of the motion range is changed by adjusting the length of the second side surface of the limit support block.
Further, the length direction of the fixing plate is consistent with the axial direction of the ramjet.
Has the advantages that: the linear motion component is a functional part of the ramjet engine adjustable nozzle, and the axial position of the linear motion component can determine the size of the throat of the adjustable nozzle; therefore, the distance between the initial installation position and the movement limit position of the linear motion component is controlled by adjusting the length of the side edge B of the limit support block, the positioning of the initial installation position and the limiting of the movement limit position of the linear motion component are realized by matching the limit support block with the pin shaft of the pin shaft pushing device, the structure is simple, the operation is convenient, the positioning and the limiting are reliable, the problem that the linear motion component is different between the initial installation position and the movement limit position is solved, the technical guarantee is provided for realizing a certain special function of the adjustable spray pipe of the ramjet engine, and the normal work of the ramjet engine and the aircraft is further ensured.
Drawings
FIG. 1 is a schematic structural view (front view) of an initial installation position of a linearly moving member of the present invention;
FIG. 2 is a schematic structural view (front view) of the extreme positions of movement of the linearly moving member of the present invention;
FIG. 3 is a schematic structural view (isometric view) of the initial installation position of the linearly moving member of the present invention;
FIG. 4 is a schematic structural view (isometric view) of the extreme positions of movement of the linearly moving member of the present invention;
FIG. 5 is a schematic structural view (isometric view) of the linear motion member of the present invention;
FIG. 6 is a schematic structural view (isometric view) of a spacing bracket of the present invention;
FIG. 7 is a schematic structural view (front view) of the retainer block of the present invention;
FIG. 8 is a schematic structural view (front view) of a push pin apparatus of the present invention;
fig. 9 is a schematic structural view (isometric view) of a fixation plate of the present invention;
the device comprises a fixing plate 1, a linear motion member 2, a limiting supporting block 3 and a pin pushing device 4.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The embodiment provides a device for positioning the initial installation position of a linear motion member and limiting the movement limit position, referring to the attached figures 1-4, comprising: the device comprises a fixed plate 1, a limiting supporting block 3 and a pushing pin shaft device 4;
referring to fig. 5, the linearly moving member 2 to be subjected to limit position restriction is a rigid member having a rectangular or other shape in cross section and capable of linearly reciprocating in the axial direction of the ramjet; the linear motion member 2 of the present embodiment is a rectangular block;
referring to fig. 6-7, the limiting support block 3 is an L-shaped block structure, and two side edges of the limiting support block 3 are a side edge a and a side edge B respectively;
referring to fig. 8, the pushing pin device 4 is an initiating explosive device or an elastic device with a spring, the pushing pin device 4 has a pin extending out of the housing, and the extending length of the pin is adjustable; the shape of the shell is set according to specific requirements, and the shell can be in various types;
referring to fig. 9, the fixing plate 1 is a part of a ramjet variable nozzle housing or a part of an aircraft housing, and plays a role of fixing other components;
the overall connection relationship is as follows: the fixed plate 1 is a fixed component, and the length direction of the fixed plate 1 is consistent with the axial direction of the ramjet, namely the length direction of the fixed plate 1 is consistent with the linear repeated motion direction of the linear motion component 2;
the pushing pin shaft device 4 is arranged on the fixing plate 1, and a pin shaft of the pushing pin shaft device 4 penetrates through the fixing plate 1; the pushing pin shaft device 4 and the linear motion member 2 are respectively positioned at two opposite sides of the fixed plate 1, namely, a pin shaft of the pushing pin shaft device 4 and the linear motion member 2 are positioned at the same side of the fixed plate 1;
after the L-shaped limiting support block 3 is turned clockwise by 90 degrees, the side edge A of the L-shaped limiting support block is fixed on the linear motion member 2 and moves synchronously with the linear motion member 2; the upper end surface of the side edge B of the limiting support block 3 is lower than the upper end surface of the linear motion member 2, and a step is formed between the upper end surface and the side edge B;
referring to the attached drawings 1 and 3, in the initial installation position of the linear motion member 2, the end surface of the pin shaft pushing device 4 abuts against the upper end surface of the side edge B of the limiting support block 3, and the pin shaft abuts against a step between the limiting support block 3 and the linear motion member 2, so that the initial installation position of the linear motion member 2 is positioned;
referring to the attached drawings 2 and 4, at the movement limit position of the linear motion member 2, the length of the pin shaft pushing device 4 is increased, and the pin shaft of the pin shaft pushing device 4 abuts against the end surface, opposite to the linear motion member 2, of the limit supporting block 3, so that the linear motion member 2 is limited in movement towards the direction of the limit supporting block 3.
The working principle is as follows: the linear motion component 2 moves to the direction of the limit supporting block 3 to move rightwards, and otherwise moves leftwards;
at the initial installation position of the linear motion component 2, the extension length of the pin shaft pushing device 4 is H0The end surface of a pin shaft of the pin shaft pushing device 4 abuts against the upper end surface of the side edge B of the limiting support block 3, and the pin shaft abuts against a step between the limiting support block 3 and the linear motion member 2, so that the rightward motion of the linear motion member 2 is limited, and the positioning of the initial position of the motion of the linear motion member 2 is realized; meanwhile, the pin shaft is positioned above the limiting support block 3, so that the pin shaft does not influence the movement of the limiting support block 3 along the axial direction of the ramjet;
the linear motion component 2 moves leftwards along the axial direction of the ramjet under the action of external force, when the motion displacement of the linear motion component 2 is greater than or equal to the length L of the side edge B of the limiting support block 3, the pin shaft of the pin shaft pushing device 4 is pushed out, and the extending length of the pin shaft reaches H1The pin shaft does not retract after being pushed out;
because the end surface of the extending end of the extended pin shaft is lower than the upper end surface of the limiting support block 3, the limiting support block 3 cannot move rightwards any more, so that the distance between the position of the linear motion component 2 and the initial position can only reach L at the minimum, but the leftward motion of the linear motion component 2 along the axis of the ramjet is not limited;
therefore, the distance between the initial installation position of the linear motion member 2 and the limit position of the range of motion can be changed by adjusting the length L of the side edge B of the limit bracket 3.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. A linear motion member initial installation position locating and movement limit position limiting device, comprising: the fixing plate (1), the limiting support block (3) and the pin pushing device (4);
the linear motion component (2) to be limited at the limit position can do linear reciprocating motion along the axial direction of the ramjet;
the pushing pin shaft device (4) is an initiating explosive device or an elastic device with a spring, the pushing pin shaft device (4) is provided with a pin shaft extending out of the shell, and the extending length of the pin shaft can be adjusted;
the fixed plate (1) is part of a ramjet variable nozzle housing or part of an aircraft housing;
the overall connection relationship is as follows: the pin pushing device (4) is arranged on the fixing plate (1), and a pin shaft of the pin pushing device (4) penetrates through the fixing plate (1); the pushing pin shaft device (4) and the linear motion component (2) are respectively positioned at two opposite sides of the fixed plate (1), namely, a pin shaft of the pushing pin shaft device (4) and the linear motion component (2) are positioned at the same side of the fixed plate (1);
the first side surface of the limiting supporting block (3) is fixed on the linear motion member (2) and moves synchronously with the linear motion member (2); a second side surface of the limiting support block (3), which is parallel to and opposite to the fixed plate (1), is lower than the upper end surface of the linear motion member (2), and a step is formed between the second side surface and the upper end surface;
at the initial installation position of the linear motion component (2), the end face of a pin shaft of the pin shaft pushing device (4) is abutted against the second side face of the limiting support block (3), and the pin shaft is abutted against a step between the limiting support block (3) and the linear motion component (2), so that the initial installation position of the linear motion component (2) is positioned;
at the movement limit position of the linear motion component (2), the length of a pin shaft of the pin shaft pushing device (4) is lengthened, and the pin shaft of the pin shaft pushing device (4) is abutted against the end face, opposite to the first side face, of the limiting support block (3), so that the linear motion component (2) is limited in movement towards the direction of the limiting support block (3).
2. The initial installation position locating and movement limit position limiting device of a linear motion member as claimed in claim 1, characterized in that the limit bracket (3) is an L-shaped block structure, and the L-shaped limit bracket (3) is fixed on the linear motion member (2) after being turned 90 degrees clockwise.
3. A linear motion member initial mounting position locating and movement limit position limiting apparatus as claimed in claim 1, wherein the distance from the initial mounting position of the linear motion member (2) to the movement range limit position is changed by adjusting the length of the second side of the limit bracket (3).
4. A linearly moving member initial mounting position locating and movement limit position limiting device as recited in claim 1, wherein a length direction of said fixed plate (1) coincides with an axial direction of a ram engine.
CN202010451279.0A 2020-05-25 2020-05-25 Linear motion component initial installation position positioning and motion limit position limiting device Pending CN111927643A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010451279.0A CN111927643A (en) 2020-05-25 2020-05-25 Linear motion component initial installation position positioning and motion limit position limiting device

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Application Number Priority Date Filing Date Title
CN202010451279.0A CN111927643A (en) 2020-05-25 2020-05-25 Linear motion component initial installation position positioning and motion limit position limiting device

Publications (1)

Publication Number Publication Date
CN111927643A true CN111927643A (en) 2020-11-13

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CN202010451279.0A Pending CN111927643A (en) 2020-05-25 2020-05-25 Linear motion component initial installation position positioning and motion limit position limiting device

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102449294A (en) * 2009-06-02 2012-05-09 埃尔塞乐公司 Thrust reverser for a dual-flow turbine engine nacelle
CN104334451A (en) * 2012-06-08 2015-02-04 埃尔塞乐公司 Locking/unlocking device for a one-piece cover of a thrust reverser of a turbojet engine nacelle
CN104838125A (en) * 2012-10-08 2015-08-12 萨基姆防务安全公司 Actuating device including primary locking device
CN105518280A (en) * 2013-08-07 2016-04-20 埃尔塞乐公司 Integrated thrust reverser device and aircraft engine nacelle equipped therewith
CN208122977U (en) * 2018-05-03 2018-11-20 中国航空发动机研究院 Utilize the jet pipe of turboshaft engine emission power generation
CN109856917A (en) * 2017-11-30 2019-06-07 上海微电子装备（集团）股份有限公司 Safety device, work stage and litho machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102449294A (en) * 2009-06-02 2012-05-09 埃尔塞乐公司 Thrust reverser for a dual-flow turbine engine nacelle
CN104334451A (en) * 2012-06-08 2015-02-04 埃尔塞乐公司 Locking/unlocking device for a one-piece cover of a thrust reverser of a turbojet engine nacelle
CN104838125A (en) * 2012-10-08 2015-08-12 萨基姆防务安全公司 Actuating device including primary locking device
CN105518280A (en) * 2013-08-07 2016-04-20 埃尔塞乐公司 Integrated thrust reverser device and aircraft engine nacelle equipped therewith
CN109856917A (en) * 2017-11-30 2019-06-07 上海微电子装备（集团）股份有限公司 Safety device, work stage and litho machine
CN208122977U (en) * 2018-05-03 2018-11-20 中国航空发动机研究院 Utilize the jet pipe of turboshaft engine emission power generation

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