CN111043216A - Autonomous telescopic undercarriage buffer - Google Patents
Autonomous telescopic undercarriage buffer Download PDFInfo
- Publication number
- CN111043216A CN111043216A CN201911329542.2A CN201911329542A CN111043216A CN 111043216 A CN111043216 A CN 111043216A CN 201911329542 A CN201911329542 A CN 201911329542A CN 111043216 A CN111043216 A CN 111043216A
- Authority
- CN
- China
- Prior art keywords
- pressure relief
- relief valve
- buffer
- pressure
- sealing plug
- 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
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Classifications
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses an autonomous telescopic undercarriage buffer, which comprises a mechanism outer cylinder; the bottom of the outer cylinder of the mechanism is clamped with an outer cylinder of a buffer through a bolt and a nut, and the top end of the inner cylinder of the buffer is sleeved at the bottom of the outer cylinder of the buffer; an electronic pressure relief valve structure is arranged at the bottom of the inner cylinder of the buffer; the electronic pressure relief valve structure comprises a pressure relief valve shell, and one end, opposite to the inner buffer cylinder, of the pressure relief valve shell is provided with a mounting flange; the pressure relief valve comprises a pressure relief valve shell and is characterized in that a pressure baffle is mounted inside the pressure relief valve shell, an air inlet is formed in the pressure baffle, a pressure sensor is mounted inside the air inlet, the pressure sensor is electrically connected with a driving motor, the output end of the driving motor is connected with a driving rod, and a sealing plug is arranged at the bottom of the driving rod. The buffer pressure relief device realizes the pressure relief work of the buffer through the cooperation among the sealing plug arranged in the pressure relief valve, the driving motor and the pressure sensor, and has stronger stability.
Description
Technical Field
The invention relates to the field of buffers, in particular to an autonomous telescopic undercarriage buffer.
Background
The existing landing gear buffers are all in a passive telescopic working mode, namely when a wheel bears a load from the ground, the buffers are in different compression (or extension) states according to the load; the aircraft flies off the ground and the bumper is in a fully extended (or shortened) state after the load is removed. In view of the fact that the existing landing gear is passive and cannot meet the requirements of special tasks, the prior art provides an autonomous telescopic landing gear buffer, but in some special landing processes of an airplane, the internal pressure of the landing gear buffer may exceed a designed value, and a relief valve is generally arranged to release the pressure. The traditional pressure release valve is of a pure mechanical (spring) type, under the condition of large overload caused by a special landing process, the self inertial load of parts such as a spring is large, the pressure release valve is easy to be interfered by overload when being started, the pressure is not released when the actual pressure in the buffer exceeds a pressure release value, the design requirement cannot be met, danger is easy to occur, and the stability is poor.
Disclosure of Invention
The present invention is directed to an autonomous retractable landing gear bumper that solves the problems set forth above in the background.
In order to achieve the purpose, the invention provides the following technical scheme: an autonomous telescopic undercarriage bumper comprises a mechanism outer cylinder; the bottom of the outer cylinder of the mechanism is clamped with an outer cylinder of a buffer through a bolt and a nut, and the top end of the inner cylinder of the buffer is sleeved at the bottom of the outer cylinder of the buffer; an electronic pressure relief valve structure is arranged at the bottom of the inner cylinder of the buffer; the electronic pressure relief valve structure comprises a pressure relief valve shell, and one end, opposite to the inner buffer cylinder, of the pressure relief valve shell is provided with a mounting flange; the pressure relief valve comprises a pressure relief valve shell, a pressure baffle is arranged inside the pressure relief valve shell, an air inlet is formed in the pressure baffle, a pressure sensor is arranged inside the air inlet, the pressure sensor is electrically connected with a driving motor, the output end of the driving motor is connected with a driving rod, a sealing plug is arranged at the bottom of the driving rod, the sealing plug is arranged on an exhaust plate, and an exhaust port matched with the sealing plug is formed in the exhaust plate; the left side and the right side of the driving rod are both provided with limiting blocks, and sliding grooves matched with the driving rod are formed in the limiting blocks; and the top end of the pressure relief valve shell is provided with an air outlet.
Preferably, the left side and the right side of the bottom of the sealing plug are both provided with sealing limiting parts for improving the sealing performance of the sealing plug.
Preferably, the outer wall of the sealing plug is provided with a wear-resistant layer, so that the service life of the sealing plug is prolonged.
Preferably, the bottom of the sealing plug is provided with an arc-shaped guide plate, so that the impact force of air pressure on the sealing plug is reduced to a certain extent, and the damage of the sealing plug is reduced.
Preferably, a sealing retainer ring is arranged on the inner wall of the exhaust port and used for enhancing the sealing performance of the exhaust port.
Preferably, the left and right sides of sealing plug bottom is provided with the connecting block, is connected with reset spring between connecting block and the pressure baffle, through connecting block and reset spring's cooperation, has ensured the stability of sealing plug to a certain extent.
Preferably, the driving motor and the pressure sensor are connected with an automatic controller through wireless signal transmission, the driving motor and the pressure sensor are controlled through the automatic controller, operation errors are reduced, and accuracy is improved.
Preferably, the pressure sensor is connected with a remote reminding mechanism through wireless signal transmission, and can remind an operator of the pressure relief state in time, so that a certain warning effect is achieved.
Compared with the prior art, the invention has the beneficial effects that:
1. the buffer pressure relief device is used for pressure relief work of the buffer through the pressure relief valve arranged outside the inner cylinder of the buffer, the pressure relief work is realized through the cooperation among the sealing plug, the driving motor and the pressure sensor which are arranged inside the pressure relief valve, the limiting block is sleeved outside the sealing plug, the bottom of the sealing plug is connected with the pressure baffle through the connecting block and the reset spring, and the structure effectively improves the stability of the sealing plug.
2. The invention improves the sealing performance of the pressure release valve structure through the sealing retainer ring arranged in the exhaust port and the sealing limiting piece on the sealing plug.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the pressure relief valve structure of the present invention;
fig. 2 is a front view of the present invention.
In the figure: 1. a mechanism outer cylinder; 2. a buffer outer cylinder; 3. an inner barrel of the buffer; 4. a pressure relief valve structure; 5. A relief valve housing; 6. installing a flange; 7. a pressure baffle; 8. an air inlet; 9. a pressure sensor; 10. A drive motor; 11. a drive rod; 12. sealing the plug; 13. an exhaust plate; 14. an exhaust port; 15. a limiting block; 16. a chute; 17. an air outlet; 18. a return spring; 19. a wear layer; 20. a baffle; 21. A sealing retainer ring; 22. and (4) connecting the blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-2, the present invention provides a technical solution: an autonomous telescopic undercarriage bumper comprises a mechanism outer cylinder 1; the bottom of the outer mechanism barrel 1 is clamped with an outer buffer barrel 2 through a bolt and a nut, and the top end of an inner buffer barrel 3 is sleeved at the bottom of the outer buffer barrel 2; an electronic pressure relief valve structure 4 is arranged at the bottom of the inner buffer cylinder 3; the electronic pressure relief valve structure 4 comprises a pressure relief valve shell 5, and one end of the pressure relief valve shell 5, which is opposite to the buffer inner cylinder 3, is provided with a mounting flange 6; a pressure baffle 7 is arranged inside the pressure relief valve shell 5, an air inlet 8 is formed in the pressure baffle 7, a pressure sensor 9 is arranged inside the air inlet 8, the pressure sensor 9 is electrically connected with a driving motor 10, the output end of the driving motor 10 is connected with a driving rod 11, a sealing plug 12 is arranged at the bottom of the driving rod 11, the sealing plug 12 is arranged on an exhaust plate 13, and an exhaust port 14 matched with the sealing plug 12 is formed in the exhaust plate 13; the left side and the right side of the driving rod 11 are both provided with a limiting block 15, and a sliding groove 16 matched with the driving rod 11 is arranged inside the limiting block 15; the top end of the relief valve housing 5 is provided with an air outlet 17.
Further, the outer wall of the sealing plug 12 is provided with a wear resistant layer 19.
Further, the bottom of the sealing plug 12 is provided with an arc-shaped flow guide plate 20.
Further, a sealing ring 21 is provided on the inner wall of the exhaust port 14.
Furthermore, the left side and the right side of the bottom of the sealing plug 12 are provided with connecting blocks 22, and a return spring 18 is connected between the connecting blocks 22 and the pressure baffle 7.
Furthermore, a driving motor 10 and a pressure sensor 9 are connected with an automatic controller through wireless signal transmission.
Further, the pressure sensor 9 is connected with a remote reminding mechanism through wireless signal transmission.
The working principle is as follows: before the invention is used, an operator installs the pressure relief valve structure 4 on the inner buffer cylinder 3 through the matching of the mounting flange 6 and the bolt; in the using process of the buffer, partial air pressure in the inner buffer cylinder 3 enters the inside of the pressure relief valve shell 5 through the air inlet 8 at the bottom of the pressure relief valve structure 4, and at the moment, the pressure sensor 9 detects the pressure value of the air pressure; when the pressure value exceeds a preset standard value, the pressure relief reminding device is connected with a remote reminding structure through wireless signal transmission to carry out pressure relief reminding on an operator; the driving motor 10 is started through an automatic controller, the driving motor 10 moves the sealing and blocking piece 12 along the direction of the exhaust port 14 through the driving rod 11, so that the sealing and blocking piece 12 is far away from the exhaust port 14, and the sealing and blocking piece 12 makes linear driving motion in the sliding groove 16 in the limiting block 15; at this time, the air pressure is exhausted to the top end of the pressure relief valve shell 5 through the air outlet 14 on the air exhaust plate 13, and the pressure relief work is completed through the air outlet 17; after the pressure relief is finished, the sealing plug 12 is reset through the matching of the driving motor 10 and the driving rod 11.
It is worth noting that: the whole device realizes control over the device through the automatic controller, and because the equipment matched with the automatic controller is common equipment, the device belongs to the existing well-known technology, and the electrical connection relation and the specific circuit structure are not repeated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An autonomous telescopic landing gear bumper, characterized in that: comprises a mechanism outer cylinder (1); the bottom of the mechanism outer cylinder (1) is clamped with a buffer outer cylinder (2) through a bolt and a nut, and the top end of the buffer inner cylinder (3) is sleeved at the bottom of the buffer outer cylinder (2); an electronic pressure relief valve structure (4) is arranged at the bottom of the buffer inner cylinder (3); the electronic pressure relief valve structure (4) comprises a pressure relief valve shell (5), and one end, opposite to the buffer inner cylinder (3), of the pressure relief valve shell (5) is provided with a mounting flange (6); a pressure baffle (7) is installed inside the pressure relief valve shell (5), an air inlet (8) is formed in the pressure baffle (7), a pressure sensor (9) is installed inside the air inlet (8), the pressure sensor (9) is electrically connected with a driving motor (10), the output end of the driving motor (10) is connected with a driving rod (11), a sealing plug piece (12) is arranged at the bottom of the driving rod (11), the sealing plug piece (12) is installed on an exhaust plate (13), and an exhaust port (14) matched with the sealing plug piece (12) is formed in the exhaust plate (13); the left side and the right side of the driving rod (11) are both provided with a limiting block (15), and a sliding groove (16) matched with the driving rod (11) is arranged inside the limiting block (15); and an air outlet (17) is formed in the top end of the pressure relief valve shell (5).
2. An autonomous retractable landing gear bumper according to claim 1, characterised in that: and a wear-resistant layer (19) is arranged on the outer wall of the sealing plug (12).
3. An autonomous retractable landing gear bumper according to claim 1, characterised in that: and an arc-shaped guide plate (20) is arranged at the bottom of the sealing plug (12).
4. An autonomous retractable landing gear bumper according to claim 1, characterised in that: and a sealing retainer ring (21) is arranged on the inner wall of the exhaust port (14).
5. An autonomous retractable landing gear bumper according to claim 1, characterised in that: the left side and the right side of the bottom of the sealing plug (12) are provided with connecting blocks (22), and a return spring (18) is connected between the connecting blocks (22) and the pressure baffle (7).
6. An autonomous retractable landing gear bumper according to claim 1, characterised in that: the driving motor (10) and the pressure sensor (9) are connected with an automatic controller through wireless signal transmission.
7. An autonomous retractable landing gear bumper according to claim 1, characterised in that: the pressure sensor (9) is connected with a remote reminding mechanism through wireless signal transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911329542.2A CN111043216A (en) | 2019-12-20 | 2019-12-20 | Autonomous telescopic undercarriage buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911329542.2A CN111043216A (en) | 2019-12-20 | 2019-12-20 | Autonomous telescopic undercarriage buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111043216A true CN111043216A (en) | 2020-04-21 |
Family
ID=70238120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911329542.2A Pending CN111043216A (en) | 2019-12-20 | 2019-12-20 | Autonomous telescopic undercarriage buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111043216A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5499527A (en) * | 1993-05-07 | 1996-03-19 | Siemens Aktiengesellschaft | Method and apparatus for testing a spring-loaded safety valve |
| CN104879551A (en) * | 2015-05-22 | 2015-09-02 | 南京航空航天大学 | Pneumatic proportional valve system based on switch strategy and control method thereof |
| CN106286674A (en) * | 2015-06-05 | 2017-01-04 | 哈尔滨飞机工业集团有限责任公司 | A kind of autonomous retractable landing gear buffer |
| CN109114268A (en) * | 2018-10-17 | 2019-01-01 | 江西洪都航空工业集团有限责任公司 | A kind of overload-resistant electronics relief valve of undercarriage buffer |
-
2019
- 2019-12-20 CN CN201911329542.2A patent/CN111043216A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5499527A (en) * | 1993-05-07 | 1996-03-19 | Siemens Aktiengesellschaft | Method and apparatus for testing a spring-loaded safety valve |
| CN104879551A (en) * | 2015-05-22 | 2015-09-02 | 南京航空航天大学 | Pneumatic proportional valve system based on switch strategy and control method thereof |
| CN106286674A (en) * | 2015-06-05 | 2017-01-04 | 哈尔滨飞机工业集团有限责任公司 | A kind of autonomous retractable landing gear buffer |
| CN109114268A (en) * | 2018-10-17 | 2019-01-01 | 江西洪都航空工业集团有限责任公司 | A kind of overload-resistant electronics relief valve of undercarriage buffer |
Non-Patent Citations (2)
| Title |
|---|
| 沈阳阀门研究所《阀门设计》编写组: "《控制阀手册 第4版》", 31 December 2005, 费希尔控制设备国际有限公司出版发行 * |
| 沈阳阀门研究所出版发行: "《WWER-1000核电站机械与电气》", 30 September 2009, 原子能出版社 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200421 |
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| RJ01 | Rejection of invention patent application after publication |