Background technology
Referring to Fig. 1.Fig. 1 shows traditional connecting bridge levelling gear schematic diagram.As shown in figure 1, traditional connecting bridge leveling
Mechanism 10 includes drive device 11, swing rod 12, driving lever 13, the first detection switch 14 and leveling wheel 15.Drive device 11 is installed
On connecting bridge 100 (see Fig. 2), the one end of swing rod 12 is articulated with the drive device 11, and the other end is articulated with driving lever 13
One end, first detection switch 14 and leveling wheel 15 are installed in the other end of driving lever 13.Leveling wheel 15 can be one
Rubber wheel.
When connecting bridge 100 is abutted against aircraft, drive device 11 drives swing rod 12 to drive the motion of driving lever 13 to make leveling wheel 15
Contact and keep certain pressure compressing on airframe, when passenger goes on or off the plane or during handling goods, airframe can on
Rise or decline, and due to there is certain pressure between leveling wheel 15 and airframe, rise or decline process in airframe
In, leveling wheel 15 can roll on airframe, and because leveling wheel 15 links together with the first detection switch 14, first examines
The signal that slowdown monitoring switch 14 rotates with regard to that can detect leveling wheel 15 relative to driving lever 13, and the signal detected is supplied to one
PLC, PLC calculate the distance that airframe rises or falls according to received signal, and control connecting bridge 100 leading section follows
Airframe rises or falls, and is abutted against so that connecting bridge remains in the suitable height and position of airframe.
Referring to Fig. 2.Fig. 2 show connecting bridge be abutted against aircraft initial position and connecting bridge rise after position versus signal
Figure.As shown in Fig. 2 the rear end of connecting bridge 100 is articulated with a fixed buildings such as terminal 200, stretched before and after the energy of connecting bridge 100
Contracting, so that its leading section can be abutted against on airframe.As previously described, when airframe rises or falls, PLC controls boarding
The leading section of bridge 100 rises or falls therewith.However, the structure type of connecting bridge 100 determines the leading section of connecting bridge 100 at present
Can be simultaneously elastic in rising or decline, as shown in Fig. 2 after the leading section of connecting bridge 100 rises, compared to initial bit
Put, connecting bridge 100 generates displacement L in the horizontal direction.Once the leading section of connecting bridge 100 produces horizontal position in the horizontal direction
Move, the pin joint between the driving lever 13 and swing rod 12 of levelling gear also can be and then movable, the leveling wheel 15 of levelling gear
It is always maintained at oppressing on airframe, the movable of hinge between such driving lever 13 and pendulum swing rod 12 will certainly cause
The scroll-up/down on airframe of leveling wheel 15, and the scroll-up/down of leveling wheel 15 then means leveling wheel 15 relative to driving lever 13
Relatively rotate.This detection means being installed on driving lever 13 that relatively rotates detects, so that PLC erroneous judgements are
Airframe is being fluctuated, so as to cause detection error.
Referring to Fig. 3, Fig. 3 shows to cause error-checking schematic diagram due to the angle change of driving lever in levelling gear.
As shown in figure 3, the leading section of connecting bridge 100 telescopic displacement G in the horizontal direction, in the process, the one end of driving lever 13
It is changed to by initial position (see solid line) away from aircraft position (see dotted line), and has given birth to variable angle amount α, while driving lever 13
The other end produces displacement H in vertical direction, and a segment distance is moved up and down along airframe equivalent to leveling wheel 15.Therefore step on
The elastic change of the leading section of machine bridge 100 in the horizontal direction, it can drive the pin joint of the bottom of driving lever 13 is front and rear to move
Dynamic, driving lever 13 is also accordingly changed relative to the angle of leveling wheel 15, and this change is also mounted on driving lever 13
Detection means detects, so as to cause PLC erroneous judgements to be that leveling wheel 15 moves up and down in airframe, so as to cause detection to miss
Difference.
Referring to Fig. 4, Fig. 4 shows the detection error curve of traditional connecting bridge levelling gear.As can be seen from Figure 4:With
The increase (more and more far away from aircraft) of the leading section retraction distance of connecting bridge 100, changing caused detection by horizontal range misses
Poor curve is in steeply rise trend, it means that the detection error as caused by changing horizontal range is with the front end of connecting bridge 100
The increase of portion's retraction distance and increased dramatically;Simultaneously as shown in figure 4, the increase of the leading section retraction distance with connecting bridge 100,
Also ascendant trend is presented in detection error curve caused by the angle change of driving lever 13, i.e., is examined caused by the angle change of driving lever 13
Survey error also with the increase of the leading section retraction distance of connecting bridge 100 gradually to increase, because total detection error is level
Detection error caused by distance change and detection error sum caused by angle change, contract so that with the leading section of connecting bridge 100
The increase of distance is returned, total detection error increased dramatically.Therefore, connecting bridge levelling gear will result in theory of mechanics at present
Larger detection error, so as to endanger the safety of aircraft.
Analyze and may determine that more than, if the leveling wheel 15 of connecting bridge levelling gear can also make with connecting bridge it is elastic
Linear motion, is just avoided that such a detection error.The mechanism needs of the elastic linear motion of leveling wheel 15 can generally be realized
The mechanisms such as guide rail, sliding block or roller are applied to, but in practice, because airframe has certain radian, on aircraft
It can easily cause to move along a straight line to one component upwardly or downwardly of mechanism of this linear motion, this power when rising or declining
Clamping stagnation or guide rail deformation, therefore this mechanism is unreliable.
In addition, in traditional connecting bridge levelling gear, the first detection switch 14 is a limit switch or encoder, and it is detected
Precision is not high enough.
Above- mentioned information is only used for strengthening the understanding of the background to the present invention, therefore it disclosed in the background section
It can include not forming the information to prior art known to persons of ordinary skill in the art.
Brief description of the drawings
Its example embodiment is described in detail by referring to accompanying drawing, above and other feature and advantage of the invention will become
It is more obvious.
Fig. 1 shows traditional connecting bridge levelling gear schematic diagram.
Fig. 2 show connecting bridge be abutted against aircraft initial position and connecting bridge leading section rise after position versus schematic diagram.
Fig. 3 shows to cause error-checking schematic diagram by the angle change of driving lever in levelling gear.
Fig. 4 shows the detection error curve of traditional connecting bridge levelling gear.
Fig. 5 A show the dimensional structure diagram under an exemplary connecting bridge levelling gear open mode of the invention.
Fig. 5 B show the connecting bridge levelling gear shown in Fig. 5 A and the front view under airframe contact condition.
Fig. 5 C show the movement locus schematic diagram of the leveling wheel in the connecting bridge levelling gear shown in Fig. 5 A.
Fig. 5 D show the detection error curve of the connecting bridge levelling gear shown in Fig. 5 A.
Fig. 6 A show an exemplary connecting bridge levelling gear dimensional structure diagram of the invention, wherein connecting bridge leveling machine
Structure is accommodated in a cover member.
Fig. 6 B show the dimensional structure diagram of the connecting bridge levelling gear shown in Fig. 6 A, and wherein leveling wheel stretches out outer cover group
Outside part.
Fig. 6 C show that the portion splitted along E-E faces of the connecting bridge levelling gear shown in Fig. 6 A regards schematic diagram.
Fig. 6 D show that the portion splitted along F-F faces of the connecting bridge levelling gear shown in Fig. 6 B regards schematic diagram.
Fig. 7 A show that the portion splitted along G-G faces of the connecting bridge levelling gear shown in Fig. 5 A regards schematic diagram, show a kind of inspection
Survey the structure of component.
Fig. 7 B show that the portion splitted along H-H faces of the connecting bridge levelling gear shown in 5A regards schematic diagram, show leveling wheel not
Contact the state of aircraft.
Fig. 7 C show that the portion splitted along H-H faces of the connecting bridge levelling gear shown in 5A regards schematic diagram, show that leveling wheel connects
Touch the state of aircraft.
Fig. 8 shows Fig. 6 B K direction views, represents the structure of another detection components.
In figure:2nd, mounting seat;31st, driving lever;32nd, follower lever;33rd, mounting rod;41st, drive device;34th, draw bar;51、
Extension spring;6th, the first detection switch;7th, leveling wheel;500th, airframe;100th, connecting bridge;20th, it is open;21st, top plate;22、
Bottom plate;23rd, biside plate;24th, foreboard;25th, back plate;8th, cover member;81st, fixed enclosure;82nd, L.H.flapped door;83rd, R.H.flapped door;84、
Torsion spring;85th, locating part;86th, gag lever post;87th, limiting plate;871st, limiting section;861st, collision block;811st, stator;810th, flange;
71st, leveling wheel seat;72nd, compression spring;73rd, the second detection switch;75th, the 3rd detection switch;92nd, support;Branch 91, seat;93rd, draw
Stretch spring;94th, the second detection switch;90th, the second detection switch.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein;On the contrary, these embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical accompanying drawing in figure
Mark represents same or similar structure, thus will omit their detailed description.
The inventive concept of connecting bridge levelling gear of the present invention is:By by leveling wheel be installed on a quadric chain come
Change movement locus of the leveling wheel in connecting bridge telescopic process, the movement locus for making leveling wheel is near linear shape.Namely
Say, the present invention reduces leveling wheel in connecting bridge telescopic process upper and lower by the way that leveling wheel is installed on a quadric chain
The displacement in direction.Therefore use connecting bridge levelling gear of the present invention, can effectively reduce because connecting bridge is flexible and caused by be mistakenly considered
Aircraft produces the detection error of lifting.
The solid under an exemplary connecting bridge levelling gear open mode of the invention is shown referring to Fig. 5 A and Fig. 5 B, Fig. 5 A
Structural representation;Fig. 5 B show the connecting bridge levelling gear shown in Fig. 5 A and the front view under the contact condition of airframe 500.This
Invention connecting bridge levelling gear, is installed on a connecting bridge, for control connecting bridge leading section follow airframe rise or under
Drop, is abutted against in the suitable position of airframe so that connecting bridge remains.
As fig. 5 a and fig. 5b, the embodiment of connecting bridge levelling gear one of the present invention includes:Mounting seat 2, driving lever 31,
Follower lever 32, mounting rod 33, drive device 41, draw bar 34 and extension spring 51.Mounting seat 2, driving lever 31, the and of follower lever 32
Mounting rod 33 can form a quadric chain, and mounting rod 33 is in the state extended in addition to the quadric chain.
Mounting seat 2 can generally be fixedly installed in the leading section side of connecting bridge.Driving lever 31 is in its underpart under it
End position is articulated with mounting seat 2.The bottom of follower lever 32 is articulated with mounting seat 2, and follower lever 32 is located at driving lever 31
Top.The one end of mounting rod 33 is articulated with the upper end of follower lever 32, and the other end is provided with the first detection switch 6 and leveling
Wheel 7.First detection switch 6 for example can be limit switch or encoder, and its setting on leveling wheel 7 can be with prior art
It is identical.At least one can be in hollow tubular for driving lever 31, follower lever 32 and mounting rod 33, can so reduce cost.
Drive device 41 is installed on mounting seat 2, and can drive the bottom of driving lever 31 around its pin joint with mounting seat 2
Rotate.The concrete structure of the drive device 41 can be with varied, such as cylinder, oil cylinder, motor and pinion and rack, motor
And worm-and-wheel gear, motor and screw-nut body, etc..The main function of drive device 41 is to pack up the present invention automatically
Connecting bridge levelling gear.In some other embodiment, drive device can also be not provided with, and is adjusted by manually packing up connecting bridge
Flattening mechanism, or connecting bridge levelling gear need not be packed up.
One end of draw bar 34 is connected to the bottom of driving lever 31, and the other end is connected to drive device 41, and draw bar 34 can be with
Be one it is rigid can also be one flexible.Draw bar 34 can be not provided with some other embodiment.
One end of extension spring 51 is connected to the bottom of driving lever 31, and the other end is connected to mounting seat 2.Extension spring 51 has
There is pretightning force, in the presence of the pretightning force, the leveling wheel 7 of the connecting bridge levelling gear always remains out the trend of stretching,
So as to certain pressure contact airframe 500, make the contact with airframe 500 of leveling wheel 7 more reliable.Other one
In a little embodiments, extension spring 51 can also be by other pretension power apparatus such as compression spring, torsion spring, balancing weight block device, permanent torsion
Torque motor, flexible rubber parts etc. replace.
The upper end of driving lever 31 is articulated with mounting rod 33.In another embodiment, the upper end of driving lever 31 is being pacified
Fill the pin joint C of the bar 33 pin joint B for being positioned adjacent to mounting rod 33 and follower lever 32, that is to say, that the upper end of driving lever 31
Portion is in the pin joint C of mounting rod 33 position in mid-length A and the upper end of mounting rod 33 of mounting rod 33 and follower lever 32
Between pin joint B.Further, the upper end of driving lever 31 in the pin joint C of mounting rod 33 to mounting rod 33 and follower lever 32
The distance between pin joint B be less than or equal to the 1/4 of the entire length of mounting rod 33.
The one side towards mounting rod 33 of driving lever 31 is inclined plane 311, under connecting bridge levelling gear collapsed state,
The inclined plane 311 is bonded with mounting rod 33.Volume of the connecting bridge levelling gear of the present invention when packing up can so be reduced.
Driving lever 31, follower lever 32, mounting rod 33 length ratio scope can be in (1.1~1.3):(0.9~1.1):
Change between (1.1~1.3), such as the length ratio of driving lever 31, follower lever 32, mounting rod 33 can be 1.2:1:1.2, or
1.1:0.9:1.3 or 1.3:1.1:1.1, etc..
Change procedure of the connecting bridge levelling gear of the present invention from open mode to collapsed state is described below:Normal conditions
Under, connecting bridge levelling gear of the present invention is in open mode in the presence of pretension power apparatus such as extension spring 51, and machine bridge is adjusted
The open mode of flattening mechanism corresponds to the stretching state of leveling wheel 7.Specifically, extension spring 51 has pretightning force, and it is pulled
The bottom of driving lever 31 so that driving lever 31 rotates clockwise around the pin joint D of itself and mounting seat 2, then follower lever 32 with
The pin joint F around itself and mounting seat 2 rotate clockwise, so as to which driving lever 31 promotes mounting rod 33 around mounting rod 33 and follower lever
32 pin joint B is rotated counterclockwise, then the leveling wheel 7 for being installed on the end of mounting rod 33 is installed therewith rotating counterclockwise to remote
2 directions of seat are stretched out, and stop until touching barrier such as airframe 500, now due to the effect of extension spring 51, tune
Flat wheel 7 can be with certain pressure compression on airframe 500.When connecting bridge levelling gear of the present invention is converted to by open mode
During collapsed state, drive device 41 drives the bottom of driving lever 31, and the driving force of drive device 41 can overcome extension spring
51 active force, driving lever 31 is set to be rotated counterclockwise around the pin joint D of itself and mounting seat 2, then follower lever 32 is therewith around itself and peace
The pin joint F of dress seat 2 is rotated counterclockwise, so as to which driving lever 31 pulls mounting rod 33 around mounting rod 33 and the pin joint of follower lever 32
B is rotated clockwise, then the leveling wheel 7 for being installed on the end of mounting rod 33 contracts therewith rotating clockwise to close to the direction of mounting seat 2
Return, until mounting rod 33 fits in the inclined plane 311 of driving lever 31, now connecting bridge levelling gear of the present invention is withdrawal shape completely
State.
In connecting bridge levelling gear of the present invention, mounting seat 2, driving lever 31, follower lever 32, mounting rod 33 constitute double leval jib
Mechanism, quadric chain pack up and open change it is freely smooth, be not susceptible to catching phenomenon, therefore driven by quadric chain
Leveling wheel 7 (correspond to connecting bridge tune in the state of the stretching open mode of connecting bridge levelling gear (correspond to) and retracted mode
The collapsed state of flattening mechanism) between change it is also very smooth.
Referring to Fig. 5 C, Fig. 5 C show the movement locus schematic diagram of the leveling wheel in the connecting bridge levelling gear shown in Fig. 5 A.
As shown in Figure 5 C, in connecting bridge levelling gear of the present invention, the movement locus S of leveling wheel 7 is near linear shape.Work as airframe
When rising or falling, connecting bridge leading section follows airframe to rise or fall, and connecting bridge leading section produces water in the horizontal direction
Prosposition moves, although now pin joint D, F in connecting bridge levelling gear each produce correspondingly sized horizontal position in the horizontal direction
Move, but the driving lever 31, follower lever 32 in connecting bridge levelling gear can rotate clockwise or counterclockwise simultaneously, simultaneously
Driving lever 31 pushes or pull on mounting rod 33 and rotated to the direction opposite with the rotation direction of driving lever 31, is installed on so as to promote
It is larger to fill the displacement of the leveling wheel 7 of the end of bar 33 in the horizontal direction, but the displacement of leveling wheel 7 is very small very in the vertical direction
Most 0, so as to form the movement locus S of the near linear shape of leveling wheel 7.That is, in the present invention, due to leveling wheel
7 are installed on wherein on a bar of a quadric chain, and pin joint D, F horizontal displacement are not directly resulted on leveling wheel 7
The significantly displacement in lower direction, after the conversion of quadric chain, pin joint D, F horizontal displacement only result in leveling wheel 7 and existed
The less displacement even displacement of leveling wheel 7 in the vertical direction is 0 on above-below direction.
Referring to Fig. 5 D, in connecting bridge levelling gear of the present invention, the movement locus of leveling wheel 7 is near linear shape, connecting bridge
It is less that the displacement (pin joint D, F horizontal displacement) of leading section in the horizontal direction only produces the in the vertical direction of leveling wheel 7
Displacement does not produce displacement, thus connecting bridge levelling gear of the present invention can substantially reduce by the horizontal displacement of connecting bridge leading section and
Caused detection error.As shown in Figure 5 D, with connecting bridge 100 leading section retraction distance increase (more and more far away from fly
Machine), the error curve undulate caused by horizontal range changes, a part of curve is located at more than reference axis, and a part is bent
Line is located at below reference axis, i.e., in the present invention, the detection error as caused by changing horizontal range, with the front end of connecting bridge 100
Fluctuating change up and down is presented in the increase of portion's retraction distance;In addition, as shown in Figure 5 D, with the leading section of connecting bridge 100 retract away from
From increase, the detection error curve as caused by the angle change of mounting rod 33 is in slow ascendant trend, i.e., with connecting bridge 100
The increase of leading section retraction distance, the detection error as caused by mounting rod angle change is only slowly increase, rather than is acutely increased
Greatly.As shown in Figure 5 D, with the increase of distance of the connecting bridge away from aircraft in the present invention, total detection error curve is in wave
Shape, i.e., total detection error fluctuates in the range of by a small margin up and down, and non-continuous increase, therefore connecting bridge levelling gear of the present invention
Accuracy of detection it is high
In another embodiment, mounting seat 2 has one to tilt plate portion, a hollow bulb and an opening.Follower lever 32, active
Bar 31 is hingedly connected to tilt the upper and lower end parts of plate portion, and hollow bulb, drive device are stretched into the bottom of driving lever 31 by opening
41 are installed on hollow bulb.So, not only make it that connecting bridge levelling gear of the present invention is very attractive in appearance, and mounting seat 2 fills to driving
Put 41 and also act as protective effect, be advantageous to extend the service life of connecting bridge levelling gear.Specifically, such as Fig. 5 A and Fig. 5 B institutes
Show, mounting seat 2 can be one have opening 20 box shape, the casing can by top plate 21, bottom plate 22, biside plate 23,
Foreboard 24 and back plate 25 are formed by fixedly connecting, and these plates surround the hollow bulb.Foreboard 24 may be constructed the inclination plate portion, open
Mouth 20 is formed between the bottom of foreboard 24 and bottom plate 22.The bottom of follower lever 32 is articulated with the upper end of foreboard 24, actively
The lower hinge of bar 31 is in the bottom of foreboard 24, and hollow bulb is stretched into the bottom of driving lever 31 by opening 20.Drive device
The cylinder body of 41 such as cylinders or oil cylinder, cylinder or oil cylinder is installed on back plate 25, and the piston rod of cylinder or oil cylinder can be cut with scissors
The bottom of draw bar 34 is connected to, when piston rod stretching cylinder body, then can contact the bottom for promoting driving lever 31, and master can be promoted
Lever 31 rotates around the pin joint D of driving lever 31 and foreboard 24.
The description for mounting seat 2 and drive device 41 is only exemplary above, is not construed as limiting the invention,
The mounting seat 2 and drive device 41 of other structures are equally applicable to the present invention.
An exemplary connecting bridge levelling gear dimensional structure diagram of the invention is shown referring to Fig. 6 A and Fig. 6 B, Fig. 6 A,
Wherein connecting bridge levelling gear is accommodated in a cover member 8;Fig. 6 B show the solid of the connecting bridge levelling gear shown in Fig. 6 A
Structural representation, wherein leveling wheel are stretched out outside cover member 8.As shown in Figure 6 A and 6 B, in another embodiment, it is of the invention
Connecting bridge levelling gear also includes cover member 8, when connecting bridge levelling gear is collapsed state, the connecting bridge levelling gear energy
It is contained in cover member 8, is corroded from the extraneous undesirable element such as rainwater, dust storm.
Cover member 8 includes fixed enclosure 81, L.H.flapped door 82 and R.H.flapped door 83.Fixed enclosure 81 is fixed on mounting seat 2, and
It is open with an accommodation space and one;The side of L.H.flapped door 82 is articulated with the side of the opening of fixed enclosure 81;R.H.flapped door 83
Side is articulated with the opposite side of the opening of fixed enclosure 81, and L.H.flapped door 82 and R.H.flapped door 83 can close this and open in closed state
Mouthful.In closed state, fixed enclosure 81, L.H.flapped door 82 and R.H.flapped door 83 collectively constitute an envelope for L.H.flapped door 82 and R.H.flapped door 83
Closed chamber, connecting bridge levelling gear can be placed in the sealing chamber under retracted state.L.H.flapped door 82 and R.H.flapped door 83 are opened, is stepped on
Thus part follower lever 32, mounting rod 33 and the leveling wheel 7 of machine bridge levelling gear can stretch out cover member 8.
Show the portion splitted along E-E faces of the connecting bridge levelling gear shown in Fig. 6 A depending on showing referring to Fig. 6 C and Fig. 6 D, Fig. 6 C
It is intended to, it shows the closure state of cover member 8;Fig. 6 D show being splitted along F-F faces for connecting bridge levelling gear shown in Fig. 6 B
Portion regards schematic diagram, and it shows the opening of cover member 8.In another embodiment, cover member 8 also includes at least two torsions
Spring 84, at least two locating parts 85 and door-opening mechanism.A torsion spring is at least installed in L.H.flapped door 82 and the junction of fixed enclosure 81
84, a torsion spring 84 is at least installed in R.H.flapped door 83 and the junction of fixed enclosure 81, and the torsion of torsion spring 84 opens L.H.flapped door 82, the right side
Door 83 keeps it turned on trend, i.e., under the effect of no external force, the torsion of torsion spring 84 makes L.H.flapped door 82, R.H.flapped door 83 be in opening state
State.At least two locating parts 85 are respectively used to the maximum angle for limiting L.H.flapped door 82 and R.H.flapped door 83 can open.Need what is illustrated
That the present invention not necessarily uses locating part 85, i.e., when the maximum opening angle of L.H.flapped door 82 and R.H.flapped door 83 need not be limited,
Locating part 85 can also be omitted.Door-opening mechanism is used to be automatically opened or closed L.H.flapped door 82 and R.H.flapped door 83.Do not possessing enabling
In the case of mechanism, L.H.flapped door 82 and R.H.flapped door 83 can also be manually opened.
In another embodiment, the door-opening mechanism in cover member 8 includes gag lever post 86 and two pieces of limiting plates 87.It is spacing
Bar 86 is fixed on mounting rod 33, and mounting rod 33 is stretched out at the both ends of gag lever post 86.Gag lever post 86 can be perpendicularly fixed at installation
Bar 33, an acute angle can also be tilted relative to gag lever post 86.Two pieces of limiting plates 87 are individually fixed in L.H.flapped door 82 and R.H.flapped door 83
Inner side, every piece of limiting plate 87 have inwardly projecting limiting section 871.Connecting bridge levelling gear is converted to by open mode packs up shape
During state, two limiting sections 871 are oppressed so as to drive L.H.flapped door 82 and R.H.flapped door 83 inside in the both ends of gag lever post 86 respectively
Rotate and close.
Further, the both ends of gag lever post 86 are each provided with a collision block 861, and two compressings of collision blocks 861 two are spacing
Portion drives L.H.flapped door 82 and R.H.flapped door 83 to close.Collision block 861 can be and the structure of the one of gag lever post 86 or be installed on
The absolute construction of gag lever post 86 such as bolt.
In another embodiment, limiting section 871 is provided with through hole, and the position of limiting plate 87 is corresponded in fixed enclosure 81 and is provided with
Stator 811, stator 811 are provided with through hole, and locating part 85 is a rod member such as one such as spacer pin or caging bolt, the bar
Part is arranged in the through hole on the through hole on limiting section 871 and stator 811, and rod member top sets a limited cap, to prevent rod member
Dropped by two through holes.Certainly, the invention is not restricted to this, others can prevent the mode that rod member drops to may be applicable to this hair
It is bright.In another embodiment, limiting section 871 is provided with through hole, and the opening of fixed enclosure 81 is provided with flange 810, flange 810
Through hole is provided with, locating part 85 is a rod member such as spacer pin or caging bolt, and the rod member is arranged in the through hole on limiting section 871
With the through hole on flange 810, rod member top, which is provided with limited cap or other, can prevent structure that rod member drops.
In another embodiment, connecting bridge levelling gear of the present invention also includes detection components, is for detecting leveling wheel 7
It is no to touch airframe.Detection components of the present invention, mainly include an elastic component and one second detection switch.Elastic component is connected to
Between leveling wheel and the mounting rod;Second detection switch is installed on the mounting rod.When the leveling wheel is not in contact with aircraft machine
Body, the elastic component make second detection switch not be triggered;When the leveling wheel contacts and oppresses in the airframe,
The airframe can trigger second detection switch to the reaction force of the leveling wheel, and second detection switch is sent
Trigger signal.Each embodiment of detection components of the present invention is described in detail below.
Being cutd open along G-G faces for connecting bridge levelling gear shown in Fig. 5 A is shown referring to Fig. 5 A, Fig. 7 A, Fig. 7 B and Fig. 7 C, Fig. 7 A
The portion opened regards schematic diagram, shows a kind of structure of detection components;Fig. 7 B and Fig. 7 C show the connecting bridge levelling gear shown in 5A
The portion splitted along H-H faces regards schematic diagram, and the state that leveling wheel contacts aircraft not in contact with the state and leveling wheel of aircraft is shown respectively.
As shown in Fig. 5 A and Fig. 7 A, in the embodiment of detection components one of the present invention, the mounting rod in connecting bridge levelling gear
33 have relative a upside 331 and a downside 332.Connecting bridge levelling gear also includes a leveling wheel seat 71, and leveling wheel 7 is installed
In on the leveling wheel seat 71.The leveling wheel seat 71 has relative a upside 711 and a downside 712.The upside of leveling wheel seat 71
711 are articulated and connected with the upside 331 of mounting rod 33 by a hinge 710, the downside 712 of leveling wheel seat 71 with mounting rod 33
One compression spring 72 is installed, compression spring 72 can also be by the rubber of other flexible structure such as compressions between side 332
The structures such as adhesive tape replace.
In the embodiment, detection components include the second detection switch 73 being installed on leveling wheel seat 71 and are installed on
Fill the counterpart 74 on bar 33.The counterpart 74 can be the partial structurtes of mounting rod 33 or be installed on mounting rod 33
Plate (see Fig. 7 A).
Referring to Fig. 7 A, in its natural state, i.e., do not acted in leveling wheel 7 by the pressure of external force such as airframe
Under, the center line of leveling wheel seat 71 can be on same straight line with the center line of mounting rod 33;In the pretightning force of compression spring 72
In the presence of, the center line of leveling wheel seat 71 and the center line of mounting rod 33 can not also point-blank and to form one blunt
Angle.
Referring to Fig. 7 B and Fig. 7 C, when leveling wheel 7 contacts and oppresses in the case of airframe, airframe is to leveling wheel 7
With reaction force, the reaction force makes leveling wheel 7 and leveling wheel seat 71 around leveling wheel seat 71 and the hinge axis of mounting rod 33
7100 turn over an angle and for example turn over 5 ° counterclockwise, then counterpart 74 triggers the second detection switch 73.Second detection switch 73 can
To be contact-type detection switch, now, the second detection switch 73 be engaged part 74 when can be triggered;Second detection switch 73
Can also be proximity type detection switch such as travel switch, now, the second detection switch 73 can be by when close to counterpart 74
Triggering.The signal that second detection switch 73 is triggered can transmit to the control of connecting bridge levelling gear under the control of the controller
Room, the operator of connecting bridge levelling gear can learn that leveling wheel 7 has been contacted and oppressed in airframe, and wherein controller can be with
It is a PLC.In this embodiment, leveling wheel seat 71 is inverse around the hinge axis 7100 of leveling wheel seat 71 and mounting rod 33
The angle that hour hands rotate is not limited to 5 °, and the usual angle is feasible in the range of 3 ° -10 °.
Fig. 6 B K direction views are shown referring to Fig. 6 B and Fig. 8, Fig. 8, represent the structure of another detection components.The embodiment party
The connecting bridge levelling gear of formula also includes bearing 91, support 92 and extension spring 93.
Bearing 91 is fixed on above the end of mounting rod 33, and bearing 91 has certain altitude;One end installation institute of support 92
Leveling wheel 7 is stated, the other end is rotatably connected at bearing 91 by structures such as a bearing pins 911;One end connection of extension spring 93
In support 92, the other end of other end connects bearing 91, such as extension spring 93 is mounted in the hole 912 on bearing 91, hole 912
Positioned at the top of bearing pin 911, extension spring 93 is located at the top of support 92.
In the connecting bridge levelling gear of the embodiment, detection components include being installed on the second detection of the end of mounting rod 33
Switch 94.
When leveling wheel 7 contacts and oppresses under airframe state, airframe can make tune to the reaction force of leveling wheel 7
Flat wheel 7 turns over such as 6 ° of an angle counterclockwise together with support 92 around the pin joint of support 92 and bearing 91, and support 92 touches
The second detection switch 94 is sent out, the second detection switch 94 sends trigger signal.Hinge of the usual support 92 around support 92 and bearing 91
The angle that contact turns over counterclockwise is all feasible in the range of 5 ° -10 °.With the class of the second detection switch 73 shown by Fig. 7 A
Seemingly, the second detection switch 94 in the embodiment can be contact-type detection switch or proximity type detection switch.
Further, in present embodiment, detection components can also include a locating part 95 such as spacer pin or spacing spiral shell
Nail etc..Locating part 95 is installed on bearing 91, and locating part 95 can be installed on position between bearing pin 911 and hole 912, and spacing
Part 95 can be closer to support 92.
Certainly, it should be appreciated by those skilled in the art the locating part 95 in detection components is not limited to spacer pin or spacing
Screw, the installation site of locating part 95 are also not limited to the top of bearing 91, if can stop support 92 rotate clockwise it is spacing
Structure is applied to the present invention.
Referring to Fig. 5 B, it shows the structure of another detection components in connecting bridge levelling gear of the present invention.As shown in Figure 5 B,
The detection components of the embodiment are applied to the situation that connecting bridge levelling gear is provided with draw bar 34.It can be set on draw bar 34
One recess 341.The detection components of the embodiment include one second detection switch 90, and second detection switch 90 is installed on actively
The bottom of bar 31 and 341 corresponding position of recess.Second detection switch 90 can be that contact-type switch can also be that proximity type is opened
Close, when the second detection switch 90 contacts or is contacted close to recess 341, then leveling wheel 7 is not in contact with airframe, when the second detection
When switch 90 is away from recess 341, the second detection switch 90 is triggered and sends trigger signal.
In addition, the description of the transfer process by above connecting bridge levelling gear between open mode and collapsed state can
Know, packing up for connecting bridge levelling gear is completed by the bottom of the driving driving lever 31 of drive device 41.Referring to Fig. 5 B,
It is a cylinder or oil cylinder as example, can stretch out the piston pole length of cylinder body connect for leveling wheel 7 using drive device 41
Contact that aircraft has certain influence, for example, the length that cylinder body is stretched out when piston rod is oversize, then limit the rotation of driving lever 31, i.e.,
Limit the 7 protruding action of leveling wheel.In such cases, the testing result for both having made detection components is that leveling wheel 7 is not in contact with
To airframe, leveling wheel 7 can not also continue protruding and touch aircraft.In the present invention, for the solution of this problem
Scheme is:One the 3rd detection switch 75 is set in drive device 41, and the 3rd detection switch 75 is used to detect drive device 41
Shortest length.In the case of drive device 41 is a cylinder or oil cylinder, the 3rd detection switch 75 detects it (see Fig. 5 B)
Piston rod can be retracted to the extreme position in cylinder body, when piston rod is retracted to the extreme position in cylinder body, the 3rd detection switch
75 are triggered and send trigger signal.
In connecting bridge levelling gear of the present invention, when controller receives the trigger signal of the 3rd detection switch 75, and do not have
When receiving the trigger signal of the second detection switch of detection components, then mean between connecting bridge leading section and airframe away from
Too far away, now controller can send cue, and operator can control connecting bridge to aircraft direction according to the cue
Further stretch out certain distance;Or controller directly controls connecting bridge further to be stretched out to aircraft direction according to the cue
Certain distance.
Connecting bridge of the present invention, including retractable connecting bridge in itself and are installed at least the one of connecting bridge leading section itself
Individual connecting bridge levelling gear, generally can be in connecting bridge leading section both sides one connecting bridge levelling gear of each self installation itself.Step on
Machine bridge levelling gear is the foregoing connecting bridge levelling gear of the present invention.
In embodiment of above may use relativity term, such as "above" or "below", to describe icon group
Relativeness of the part for another component.It is appreciated that, if making it turn upside down the device upset of icon, is described
It will turn into the component " under " or " on " in component "up" or "down".Term "one", " one ", " described " and " at least one
It is individual " to represent to exist one or more elements/part/etc..Term "comprising", " comprising " and " having " are representing out
The meaning being included of formula is put, and refers to other part etc. also may be present in addition to the part listed;
" first ", " second " only use as mark, are not the numerical limits to its object.
It should be appreciated that the present invention be not limited in its application to set forth herein part detailed construction and arrangement side
Formula.The present invention can have other embodiment, and can realize and perform in many ways.Aforesaid deformation form and repair
Reshaping formula is fallen within the scope of the present invention.It should be appreciated that invention disclosed and defined herein extend to it is in text and/or attached
Mentioned in figure or all alternative combinations of two or more obvious independent features.All these different combinations are formed
Multiple alternative aspects of the present invention.Embodiment as described herein illustrates to become known for realizing best mode of the invention,
And those skilled in the art will be enable using the present invention.
Although exemplary embodiment describing the present invention with reference to several, it is to be understood that, term used is explanation and shown
Example property and nonrestrictive term.Because the present invention can be embodied without departing from the spiritual or real of invention in a variety of forms
Matter, it should therefore be appreciated that above-described embodiment is not limited to any foregoing details, and should be in the spirit that appended claims are limited
With widely explained in scope, therefore the whole changes fallen into claim or its equivalent scope and remodeling all should be the power of enclosing
Profit requires to be covered.