CN111017199A - Landing gear leveling control system and method - Google Patents
Landing gear leveling control system and method Download PDFInfo
- Publication number
- CN111017199A CN111017199A CN201911224916.4A CN201911224916A CN111017199A CN 111017199 A CN111017199 A CN 111017199A CN 201911224916 A CN201911224916 A CN 201911224916A CN 111017199 A CN111017199 A CN 111017199A
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- CN
- China
- Prior art keywords
- electric cylinder
- undercarriage
- landing gear
- leveling
- chassis
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/18—Operating mechanisms
- B64C25/24—Operating mechanisms electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/18—Operating mechanisms
- B64C25/26—Control or locking systems therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The invention relates to a leveling control system and method for an undercarriage, and belongs to the technical field of undercarriages. The invention realizes the leveling-in-place judgment by using a torque amplitude limiting judgment mode, particularly ensures that the undercarriage is reliably attached to the auxiliary support by judging the torque amplitude limiting, cancels a leveling-in-place switch, reduces equipment and improves the reliability of the vehicle.
Description
Technical Field
The invention belongs to the technical field of undercarriage, and particularly relates to an undercarriage leveling control system and method.
Background
The leveling-back in-place switch judges whether the landing gear of a certain vehicle is leveled back to the place. As shown in fig. 1, the levelling back process is the movement of the landing gear 1 about the levelling back axis 6. In order to ensure the driving safety, the undercarriage in the front of the vehicle should be in a leveling state, as shown in fig. 2, the position of the undercarriage 1 reaches the leveling in-place switch 2, and the undercarriage 1 is in seamless fit with the auxiliary support 4.
The mounting position of the leveling in-place switch 2 needs to be debugged, when the mounting position of the leveling in-place switch 2 is unreasonable, the landing gear 1 and the auxiliary support 4 cannot be completely attached tightly, and the landing gear 1 is not actually leveled in place; when the leveling-back-in-place switch 2 fails, whether the landing gear 1 is leveled back in place cannot be judged.
In order to solve the above problems, it is necessary to provide a reliable landing gear leveling control system and method, which can improve the reliability of the vehicle.
Disclosure of Invention
Technical problem to be solved
The technical problem to be solved by the invention is as follows: how to design a landing gear leveling control system and method improves the reliability of a vehicle and reduces the complexity of the system.
(II) technical scheme
In order to solve the technical problem, the invention provides an undercarriage leveling control system, which comprises an undercarriage 1, a chassis 3, an auxiliary support 4, an electric cylinder 5 and a leveling rotating shaft 6; wherein, auxiliary support piece 4 erects in 3 one sides on the chassis, one end is fixed, the pivot 6 of turning round the straight is fixed in 3 other side tip on the chassis, 1 one end of undercarriage is installed on pivot 6 of turning round, 5 one ends of electronic jar are installed on undercarriage 1, undercarriage 1 can rotate around pivot 6 of turning round the straight under electronic jar 5's pulling force, install the position trompil between auxiliary support piece 4 and the pivot 6 of turning round on the chassis 3, and the specific position of trompil and auxiliary support piece 4's length sets up to make: in the process that the undercarriage 1 rotates around the leveling rotating shaft 6 to contact the auxiliary supporting piece 4 under the pulling force of the electric cylinder 5, the other end of the electric cylinder 5 can penetrate through the opening on the chassis 3 to continue moving, and after the undercarriage 1 contacts the auxiliary supporting piece 4, the electric cylinder 5 is blocked from moving, and finally the undercarriage 1 can be in the leveling in-place state.
Preferably, the auxiliary support 4 is an elastic member.
Preferably, the auxiliary support 4 is a rubber material.
Preferably, the electric cylinder 5 is a linear electric cylinder 5.
Preferably, the landing gear 1 is a vehicle landing gear.
The invention also provides a landing gear leveling control method realized by the system, which controls the electric cylinder 5 to do the leveling movement, pulls the landing gear 1 to do the movement around the leveling rotating shaft 6, when the included angle between the landing gear 1 and the chassis 3 is smaller than a certain angle, the electric cylinder 5 operates in a deceleration way, meanwhile, a torque amplitude limiting judgment process is started, when the undercarriage 1 contacts the auxiliary supporting piece 4, the electric cylinder 5 is blocked from moving, pulling is continued to be pulled down, the pulling force is increased, the current value of the electric cylinder 5 is increased, when the current value reaches the torque amplitude limit set by the software and is maintained for a certain time, the undercarriage 1 is considered to be reliably contacted with the auxiliary supporting piece 4, the undercarriage 1 is in the leveling-back in-place state, the software controls the electric cylinder 5 to stop moving at the moment, so that the electric cylinder 5 is powered off, so that the electric cylinder 5 remains in the current position, thus ensuring that the landing gear 1 and the auxiliary support 4 always maintain a reliable contact state.
Preferably, the brake of the electric cylinder 5 is turned off, and the electric cylinder 5 is powered off.
Preferably, the certain time is 2 s.
(III) advantageous effects
The invention realizes the leveling-in-place judgment by using a torque amplitude limiting judgment mode, particularly ensures that the undercarriage is reliably attached to the auxiliary support by judging the torque amplitude limiting, cancels a leveling-in-place switch, reduces equipment and improves the reliability of the vehicle.
Drawings
FIG. 1 is a schematic view of a present landing gear leveling control system;
FIG. 2 is a schematic view of a current landing gear leveling control system and its leveling-in-place state;
FIG. 3 is a schematic view of the landing gear leveling control system of the present invention and its leveling-in-place state;
wherein, 1-landing gear 2-leveling in-place switch 3-chassis 4-auxiliary supporting piece 5-electric cylinder 6-leveling rotating shaft.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
As shown in fig. 3, the landing gear leveling control system provided by the invention comprises a landing gear 1, a chassis 3, an auxiliary support 4, an electric cylinder 5 and a leveling rotation shaft 6; wherein, auxiliary stay spare 4 is elastomeric element, erect in 3 one sides on the chassis, one end is fixed, the flat pivot of returning 6 fixes in 3 other side tip on the chassis, 1 one end of undercarriage is installed on the flat pivot of returning 6, 5 one ends of electronic jar are installed on undercarriage 1, undercarriage 1 can rotate around the flat pivot of returning 6 under electronic jar 5's pulling force, install the position trompil between auxiliary stay spare 4 and the flat pivot of returning 6 on the chassis 3, and the specific position of trompil and auxiliary stay spare 4's length sets up to make: in the process that the undercarriage 1 rotates around the leveling rotating shaft 6 to contact the auxiliary supporting piece 4 under the pulling force of the electric cylinder 5, the other end of the electric cylinder 5 can penetrate through the opening on the chassis 3 to continue moving, and after the undercarriage 1 contacts the auxiliary supporting piece 4, the electric cylinder 5 is blocked from moving, and finally the undercarriage 1 can be in the leveling in-place state.
The working principle of the control system of the invention is as follows: the system software controls the electric cylinder 5 to retract and move, the undercarriage 1 is pulled to move around the leveling rotating shaft 6, when the included angle between the undercarriage 1 and the chassis 3 is smaller than a certain angle, the electric cylinder 5 operates in a speed reduction mode, meanwhile, a torque amplitude limiting judgment process is started, after the undercarriage 1 contacts the auxiliary supporting piece 4, the electric cylinder 5 is blocked to move, pulling is continued, the tension is increased, the current value of the electric cylinder 5 is increased, when the current value reaches the torque amplitude limiting set by the software and is maintained for 2s, the undercarriage 1 and the auxiliary supporting piece 4 are considered to be reliably contacted, the undercarriage 1 is in a leveling return in-place state, the electric cylinder 5 is controlled by the software to stop moving, a brake holder of the electric cylinder 5 is closed, the electric cylinder 5 is powered off, the electric cylinder 5 is enabled to keep the current position, and therefore the undercarriage.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A landing gear leveling control system is characterized by comprising a landing gear (1), a chassis (3), an auxiliary supporting piece (4), an electric cylinder (5) and a leveling rotating shaft (6); wherein, auxiliary stay spare (4) are upright in chassis (3) one side, one end is fixed, the end in chassis (3) the other side is fixed in rotary shaft (6) of returning the straight line, undercarriage (1) one end is installed on rotary shaft (6) of returning the straight line, install on undercarriage (1) electronic jar (5) one end, undercarriage (1) can rotate around rotary shaft (6) of returning the straight line under the pulling force of electronic jar (5), install the position trompil between auxiliary stay spare (4) and rotary shaft (6) of returning the straight line on chassis (3), and the specific position of trompil and the length of auxiliary stay spare (4) set up to make: in the process that the undercarriage (1) rotates around the leveling rotating shaft (6) to contact the auxiliary supporting piece (4) under the pulling force of the electric cylinder (5), the other end of the electric cylinder (5) can penetrate through the opening in the chassis (3) to continue moving, and after the undercarriage (1) contacts the auxiliary supporting piece (4), the electric cylinder (5) is blocked from moving, and finally the undercarriage (1) can be in the leveling in-place state.
2. System according to claim 1, characterized in that said auxiliary support (4) is an elastic member.
3. System according to claim 2, characterized in that said auxiliary support (4) is of rubber material.
4. The system according to claim 2, characterized in that the electric cylinder (5) is a linear electric cylinder (5).
5. The system according to claim 2, characterized in that the undercarriage (1) is a vehicle undercarriage.
6. A landing gear leveling control method implemented by using the system of any one of claims 1 to 5, characterized by controlling an electric cylinder (5) to perform retraction movement, pulling a landing gear (1) to move around a leveling rotating shaft (6), when an included angle between the landing gear (1) and a chassis (3) is smaller than a certain angle, decelerating the electric cylinder (5) to operate, and simultaneously starting a torque amplitude limiting judgment process, when the landing gear (1) contacts an auxiliary support member (4), the electric cylinder (5) is blocked from moving, pulling down continuously increases tension force to increase the current value of the electric cylinder (5), when the current value reaches the torque amplitude limiting and is maintained for a certain time, the landing gear (1) and the auxiliary support member (4) are considered to be reliably contacted, and the landing gear (1) is in a leveling in-place state, at the moment, software controls the electric cylinder (5) to stop moving to power off the electric cylinder (5), so that the electric cylinder (5) keeps the current position, thereby ensuring that the landing gear (1) and the auxiliary supporting piece (4) always maintain a reliable contact state.
7. Method according to claim 6, characterized in that the band brake of the electric cylinder (5) is closed and the electric cylinder (5) is de-energized.
8. The method of claim 6, wherein the certain time is 2 s.
9. Method according to claim 6, characterized in that the retraction movement is controlled by software to the electric cylinder (5).
10. The method of claim 6, wherein the torque limit is set by software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911224916.4A CN111017199A (en) | 2019-12-04 | 2019-12-04 | Landing gear leveling control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911224916.4A CN111017199A (en) | 2019-12-04 | 2019-12-04 | Landing gear leveling control system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111017199A true CN111017199A (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911224916.4A Pending CN111017199A (en) | 2019-12-04 | 2019-12-04 | Landing gear leveling control system and method |
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| Country | Link |
|---|---|
| CN (1) | CN111017199A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0495553A (en) * | 1990-08-09 | 1992-03-27 | Toyota Motor Corp | Auxiliary wheel device for vehicle |
| WO1999019191A1 (en) * | 1997-10-14 | 1999-04-22 | N.C.H. Hydraulische Systemen B.V. | Trailer for transporting containers, which is provided with transverse positioning means |
| US5901980A (en) * | 1996-11-19 | 1999-05-11 | Norco Industries, Inc. | Vehicle leveling and stabilizing apparatus |
| CN2706558Y (en) * | 2004-01-07 | 2005-06-29 | 杨培林 | K shaped remote-controlled parking position lock |
| CN106758940A (en) * | 2016-11-23 | 2017-05-31 | 张大明 | A kind of anticollision economize on electricity berth lock |
| CN108466607A (en) * | 2017-02-23 | 2018-08-31 | 程浩鹏 | A kind of automobile auxiliary anti-skid device |
-
2019
- 2019-12-04 CN CN201911224916.4A patent/CN111017199A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0495553A (en) * | 1990-08-09 | 1992-03-27 | Toyota Motor Corp | Auxiliary wheel device for vehicle |
| US5901980A (en) * | 1996-11-19 | 1999-05-11 | Norco Industries, Inc. | Vehicle leveling and stabilizing apparatus |
| WO1999019191A1 (en) * | 1997-10-14 | 1999-04-22 | N.C.H. Hydraulische Systemen B.V. | Trailer for transporting containers, which is provided with transverse positioning means |
| CN2706558Y (en) * | 2004-01-07 | 2005-06-29 | 杨培林 | K shaped remote-controlled parking position lock |
| CN106758940A (en) * | 2016-11-23 | 2017-05-31 | 张大明 | A kind of anticollision economize on electricity berth lock |
| CN108466607A (en) * | 2017-02-23 | 2018-08-31 | 程浩鹏 | A kind of automobile auxiliary anti-skid device |
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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: 20200417 |
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| RJ01 | Rejection of invention patent application after publication |