A kind of for city railway vehicle, the locking device of public transit vehicle door system
Technical field
The present invention relates to the door drive mechanism of unblanking of locomotive car door.
Background technology
Existing rail vehicle, the locking device of train-door system of public transit vehicle have following several.
The first is passive locking device, and it is realized by the variation pattern of guide screw lead, and its maximum feature is to rise
The helicla flute of angle screw rod divides two sections, and one section is great-lift angle helicla flute, end connect locking section, its structure include become lift angle screw rod,
Plain nut, torsion spring, swivel nut, contact plug and manual unlocking part.The helicla flute becoming lift angle screw rod divides two sections, and one section is great-lift angle
The helicla flute of high efficiency transmission, its end connects a bit of lead angle and forms locking section less than the helicla flute of angle of friction.Door
Locking with unlock be by self adaptation nut enter, exit become lift angle screw rod lockout zone realize, the most at closing time, borrow
Help relatively rotating of plain nut and self adaptation nut realize door lock and close.
The second is to reach locking purpose by the way of latch upper groove blocks motion roller, this kind of passive locking dress
Putting in the door system lock structure that can apply to double door or single open-door, what it realized it is critical only that between latch and groove
Coordinate, can underdraw for: 1, during closing the door, roller bolt along supporting slide track advance, to close the door position time drive nut
Rotate together with torsion spring so that latch enters in groove;2, in door opening process, leading screw drives nut and torsion spring reversion
Roller bolt being screwed out groove, and moves along supporting slide track under leading screw drives, putting in place until opening the door.
The third is omnidistance locking, and device realizes the locking of transmission between motor and leading screw, the most directly locks door leaf,
It mainly transfers power to driven shaft by driving shaft rotating, and driven shaft only unidirectional delivery power is to driving shaft, therefore uses
In the train-door system of worm drive, it is achieved omnidistance locking, i.e. door (non-door-closing in-place position and close the door initial at an arbitrary position
Position), under manual mode, door is only capable of towards direction motion of closing the door.
For the first locking mechanism, just can only can play locking effect after Men Guan puts in place, the shortcoming of this device exists
In, on leading screw, pitch is change, and leading screw is difficult to processing, and leading screw is difficult to change after abrasion occurs in locking section.
For the second locking mechanism, this latch bears finger shield adhesive tape active force, and for consumable accessory, spacing block set is not firm
Property fixing cause switch gate during door leaf easily beat.
Being omnidistance locking for the third locking mechanism, installation accuracy requires high and achieves omnidistance locking, but does not examines
Consider end-toothed disc and engage the problem of the goodness of fit with end tooth axle, the most also there will be locking device damage parts and be difficult to change
Problem.
Summary of the invention
The technical problem to be solved is to overcome the above-mentioned deficiency of prior art to provide a kind of for city rail
Road vehicle, the locking device of public transit vehicle door system so that it is simple in construction, locking is reliable, rapidly.
The present invention solves the technical scheme that above-mentioned technical problem used:
A kind of for city railway vehicle, the locking device of public transit vehicle door system, including active part and secondary part, actively
Part includes motor, adapter sleeve, internal gear, sleeve, and motor is rigidly connected with adapter sleeve, and the axle of motor and sleeve pass through key
Connecting, fixed annulus in adapter sleeve inner chamber, secondary part includes external gear, spline housing, spring, baffle plate, screw mandrel, outer gear sleeve
Outside spline housing, spring housing is in the outside of external gear, and spring side is spacing by the fluted disc of external gear, and spring opposite side is limited by baffle plate
Position, baffle plate is fixed on screw mandrel, and spline housing is internal to be passed through bonded with screw mandrel, and active part and secondary part pass through active part
Internal gear and the external gear of secondary part be attached, during normal state, internal gear meshes together with external gear, and motor turns
Time dynamic, sleeve is centrifugal and mobile when making external gear depart from internal gear, and secondary part can rotate.
Above-mentioned screw mandrel is connected with train-door system, is opened the door train-door system by it or locks a door.
Preferably, circumferentially arranging groove, internal gear relative set projection in above-mentioned adapter sleeve inner chamber, internal gear projection is led to
Cross groove to embed in adapter sleeve.
Compared with prior art, it is an advantage of the current invention that:
1, motor rotates generation power and directly acts on leading screw and carry out locking to make train-door system unlock and locking, and without it
He adds again the promptness of locking at power source, the most i.e. saving space.
2, locking is carried out by tooth mesh form, more efficient, reliable, other locking devices such as pin, thrust block can be solved
Deng unstable shortcoming.
Accompanying drawing explanation
Fig. 1 is that the embodiment of the present invention is for city railway vehicle, the exploded view of the locking device of public transit vehicle door system.
Fig. 2 is the structural representation of embodiment of the present invention locking device active part.
Fig. 3 is the structural representation of embodiment of the present invention locking device secondary part.
Fig. 4 is embodiment of the present invention motor location diagram of sleeve and external gear when not working.
Sleeve and the location diagram of external gear when Fig. 5 is the work of embodiment of the present invention motor.
Fig. 6 is that the embodiment of the present invention is for city railway vehicle, the structural representation of the locking device of public transit vehicle door system
Figure.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the invention will be further described.
As shown in Fig. 1,2,3,6, a kind of for city railway vehicle, the locking device of public transit vehicle door system, mainly wrap
Including active part and secondary part, in figure, 1 is motor, and 2 is adapter sleeve, and 3 is internal gear, and 4 is sleeve, and 5 is external gear, and 6 is flower
Key set, 7 is spring, and 8 is baffle plate, and 9 is screw mandrel.
Active part is as in figure 2 it is shown, it includes motor 1, adapter sleeve 2, internal gear 3, sleeve 4.
Motor 1 is rigidly connected with adapter sleeve 2, and the axle 11 of motor 1 is connected by key 41 with sleeve 4.
Circumferentially arranging groove 21, internal gear 3 relative set projection 31 in adapter sleeve 2 inner chamber, internal gear 3 projection 31 is passed through
Groove 21 embeds in adapter sleeve 2, and internal gear 3 can slide along groove 21.Owing to internal gear 3 embeds in the groove of adapter sleeve 2, permissible
Complete axially-movable, it is impossible to rotate.
Secondary part is as it is shown on figure 3, it includes external gear 5, spline housing 6, spring 7, baffle plate 8, screw mandrel 9.
External gear 5 is enclosed within outside spline housing 6, and spring 7 is enclosed within the outside of external gear 5, and spring 7 side is by the fluted disc of external gear 5
51 is spacing, and spring 7 opposite side is spacing by baffle plate 8, and baffle plate 8 is fixed on screw mandrel 9, and spline housing 6 is internal to be passed through to be bonded with screw mandrel 9
Connect.
Above-mentioned screw mandrel 9 is connected with train-door system, is unlocked train-door system or locking by it.
Above-mentioned active part and secondary part are carried out even by the internal gear 3 of active part and the external gear 5 of secondary part
Connecing, during normal state, internal gear 3 meshes together with external gear 5, and secondary part can not rotate, and therefore door is lockable.Work as external tooth
During wheel 5 disengaging internal gear 3, secondary part can rotate, and is therefore made a unblock by the rotation of leading screw 9.
Projection 42 is set on above-mentioned sleeve 4, skewed slot 52 is correspondingly set on external gear 5, after projection 42 props up skewed slot 52, compel
Making external gear 5 overcome the elastic force of spring 7 to be displaced outwardly, after departing from internal gear 3 to external gear 5, whole secondary part is particularly
Leading screw 9 can depart from the restriction of internal gear 3 and rotate, thus opposite house is unlocked.
As shown in Figure 4,5, when motor 1 is in off-position, external gear 5 cannot past will move right under spring 7 acts on,
Now, internal gear 3 engages with external gear 5, and internal gear 3 cannot rotate in the groove of adapter sleeve 2, is thus in locking
State.
When motor 1 is energized, motor 1 band moving sleeve 4 rotates, and the shoulder external gear wheel 5 that now sleeve 4 protrudes above produces power
Effect, promotes external gear 5 in Fig. 5 state backward, and now internal gear 3 is disengaged from external gear 5, and unblock completes, screw mandrel 9 turns
Dynamic, door starts to open at.
When the door is completely closed, motor 1 power-off, external gear 5 can be returned to position shown in Fig. 5 due to spring effect, become
Locking states.