CN205532021U - Single division of sliding plug door system - Google Patents

Abstract

The utility model discloses a single division of sliding plug door system, including being used for driving gate reciprocating motion's actuating mechanism and stopper to draw the track, still be equipped with a direction gag lever post and limiting plate, direction gag lever post one end and mount fixed connection, the other end is the free end, the limiting plate is rotatably installed on the crossbeam, and when closing when the drive of door at actuating mechanism under, the limiting plate rotation limits men huiyi until the free end that stops the gag lever post that lead, when opening when the drive of door at actuating mechanism under, limiting plate reversal and relieve and block to direction gag lever post free end that the removal is gone back to the door. The utility model discloses it is anterior to utilize the limiting plate to block at direction gag lever post free end, when the door is locked, can not opened easily.

Description

Singly open sliding plug door system

Technical field

This utility model relates to a field, specifically one and singly opens sliding plug door system.

Background technology

Singly open stopping sliding door, generally electric motor driven screw, drive the nut assembly being arranged on screw rod to move back and forth, and then drive the sleeve assembly being connected with nut assembly.Typically, singly open sliding plug door system more application in the mass transportation facilities door such as track traffic, big bus field, be commonly used to above-mentioned field singly opens sliding plug door system, mostly there is baroque problem, when door lock lost efficacy, Men Yi is opened, false triggering signaling switch, and cause enabling signal mistake, there is great potential safety hazard.

Utility model content

Utility model purpose: during for solving the existing door lock inefficacy singly opening stopping sliding door existence, causing Men Yi to be opened, and then false touch signaling switch sends the potential safety hazard that the enabling signal of mistake is caused, the one that this utility model provides singly opens sliding plug door system.

Technical scheme: for solving above-mentioned technical problem, one of the present utility model is singly opened sliding plug door system, drawn track including drive mechanism and the plug moved back and forth for driving gate；Being additionally provided with a guide and limit bar and limiting plate, described guide and limit bar one end is fixing with fixed mount to be connected, and the other end is free end；Described limiting plate is rotatably installed on crossbeam, and when door is closed under the drive of drive mechanism, limiting plate rotates until stopping the free end of guide and limit bar, limits door return；When door is opened under the drive of drive mechanism, limiting plate inverts and releases the stop to guide and limit bar free end, and door back moves.

Further, after described limiting plate inverts and releases the stop to guide and limit bar free end, guide and limit bar approaches limiting plate edge, limits limiting plate and rotates.

Further, described crossbeam is provided with guiding lock dog, and described drive mechanism includes by motor-driven screw mandrel and nut assembly；Described nut assembly includes gear frame, the nut being sheathed on screw mandrel, the follow-up unit that is fixed on nut；Nut is arranged in gear frame, gear frame branch sleeve assembly；Screw mandrel drives nut assembly along screw mandrel axially reciprocating；During screw mandrel rotates forward, when follow-up unit touches guiding lock dog, moving downwardly to limiting plate guiding leading of lock dog upper surface and stopped by this limiting plate, follow-up unit is rotated into the space between side and the limiting plate of guiding lock dog with screw mandrel and is locked；When screw mandrel rotates backward, follow-up unit rotates backward with screw mandrel and unlocks, then along screw mandrel axially-movable to the restriction departing from guiding lock dog.

Further, described gear frame has the mechanism limiting nut with screw mandrel rotational angle range.

Further, described gear frame has the installation portion being connected with sleeve assembly, installation portion upwardly extends and forms the nut installation portion being made up of four root posts, nut is arranged in the space that four root posts are constituted, and the two root post tops towards crossbeam side are provided with the spacer pin limiting nut with screw mandrel rotational angle range wherein.

Further, the external diameter of described nut is more than the distance between two heel posts.

Further, described nut is made up of inner ring and outer ring, and inner ring coordinates with wire rod thread, and outer ring sleeve cooperates on inner ring and by anti-slop serrations, and outer ring is outward extended with the mounting seat of follow-up unit towards crossbeam side.

Further, described mounting seat has a screw, and follow-up unit has a screw rod, and screw rod is screwed in screw, makes follow-up unit and the fixing connection of nut.

Further, described follow-up unit is roller.Use roller and guide lock dog collocation, the running resistance of nut assembly can be reduced when by guiding lock dog surface to greatest extent, promote the use stationarity of system.

Further, the both sides, outer ring of described nut lay respectively between the adjacent upright posts of correspondence, and screw mandrel drives gear frame to move axially along screw mandrel by nut outer ring.

Further, described nut assembly also comprises the elastomeric element to nut applying twisting resistance.

Further, described elastomeric element is torsion spring, and one end rides against on gear frame, and the other end rides against on nut.Torsion spring uses the internal diameter model more than screw mandrel diameter, is enclosed within outside screw mandrel.

Further, described nut outer ring is outward extended with block, and one end rides against on this block.

Further, described guiding lock dog has the smooth upper surface that a guiding follow-up unit moves to limiting plate.

Further, described guiding lock dog has one towards the side of limiting plate, forms the space that can fall into follow-up unit between this side and limiting plate.

Further, described side is to limit the inclined-plane that follow-up unit ejects.

Further, the angle between described side and vertical plane is 0-10 °.In this angular range, guiding lock dog can apply active force to follow-up unit, and follow-up unit will not be caused again by locked problem because angle is excessive, and this angle is preferably 3 °.

Further, being additionally provided with the slide rail moved for follow-up unit, this slide rail connects with guiding lock dog and seamlessly transits with the upper surface guiding lock dog.Slide rail is set, makes follow-up unit move under the restriction of slide rail, it is possible to increase the stationarity of nut assembly motion further.

Further, described limiting plate is rotatably installed on crossbeam by bearing pin, and this limiting plate has the riser of bending towards guiding lock dog side；Back-moving spring it is provided with between limiting plate and bearing pin.

Further, described limiting plate can trigger signaling switch in spinning movement.

Further, described limiting plate is provided with waist hole, and described crossbeam is provided with spacer pin, and spacer pin limits the limiting plate anglec of rotation in stretching into waist hole.

Further, also include a man-operated mechanism, this man-operated mechanism includes a fixed support being arranged on crossbeam and a travel(l)ing rest being arranged on bearing pin, between two supports, back-moving spring is installed, travel(l)ing rest manually stay cord drives and rotates around bearing pin, can be transferred to from the space guided between lock dog and limiting plate by follow-up unit in rotation process.

Further, described travel(l)ing rest and limiting plate are arranged on same bearing pin.

Further, described drive mechanism branch sleeve assembly, sleeve assembly connects door by taking door frame；Described sleeve assembly is provided with and fills in the roller drawing track to match；Being provided with hanger at described crossbeam two ends, parallel between hanger be provided with long guide pillar, sleeve assembly can move back and forth on long guide pillar.

Further, described long guide pillar two ends pass hanger, and arrange rolling member in end, are provided with one group of mounting bracket on fixed mount, and rolling member matches with the slideway being located at inside mounting bracket.

Further, being provided with synchronizing bar between described mounting bracket, synchronizing bar two ends are fixing connects transmission arm, and each transmission arm is flexibly connected with hanger by connecting rod.

Beneficial effect: compared with prior art, one of the present utility model is singly opened sliding plug door system and is utilized limiting plate to be blocked in guide and limit bar free end front portion, when door is locked, will not be opened easily.When the torsion spring on limiting plate lost efficacy, follow-up unit produces between guiding lock dog and limiting plate, limiting plate can not autonomous return, thus can not trigger signaling switch, and cause enabling signal mistake, guide and limit bar blocks the plug that door opens and pulls work, makes door to open, it is to avoid occur unexpected.

Accompanying drawing explanation

Fig. 1 is this utility model overall structure schematic diagram；

Fig. 2 is the assembled state partial schematic diagram of fixed mount and crossbeam；

Fig. 3 is the partial schematic diagram that the left part of Fig. 2 hides mounting bracket；

Fig. 4 is the assembled state partial schematic diagram of crossbeam, mounting bracket, hanger, long guide pillar and synchronizing bar；

Fig. 5 is the position view under door closure state between guide and limit bar and limiting plate；

Fig. 6 is the position view under a state opened between guide and limit bar and limiting plate；

Fig. 7 is the first embodiment guiding lock dog；

Fig. 8 is the second embodiment guiding lock dog；

Fig. 9 is nut assembly structural representation；

Figure 10 is the combinative structure schematic diagram of nut assembly and gear frame；

Figure 11 is gear frame structural representation；

Figure 12 is nut structure schematic diagram；

Figure 13 is to guide lock dog and position-limit mechanism, the mated condition schematic diagram of follow-up unit；

Figure 14 is man-operated mechanism structural representation.

Detailed description of the invention

Below in conjunction with the accompanying drawings this utility model is further described.

One as shown in Fig. 1 to Figure 14 singly opens sliding plug door system, draw track 41, crossbeam 11 including fixed mount 40, the plug that is arranged on fixed mount 40 and be arranged on crossbeam 11 drive mechanism moved back and forth for driving gate, drive mechanism branch sleeve assembly 6, sleeve assembly 6 connects door 48 by taking door frame；It is additionally provided with on sleeve assembly 6 and fills in the roller drawing track 41 to match；It is respectively mounted hanger 49 at crossbeam two ends, between hanger 49 parallel equipped with long guide pillar 50, sleeve assembly 6 is sleeved on long guide pillar 50, and can move back and forth on long guide pillar 50, long guide pillar 50 two ends pass hanger 49, and install rolling member in end, and rolling member is device or the parts that bearing etc. has rolling function, arranging one group of mounting bracket 43 on fixed mount 40, rolling member matches with the slideway being arranged on inside mounting bracket 43.Can also arrange between mounting bracket 43 one can the synchronizing bar 47 of axial rotation, synchronizing bar 47 two ends are fixing connects transmission arm 64, and each transmission arm 64 is flexibly connected with hanger 49 by connecting rod.

As shown in Fig. 7 to Figure 14, drive mechanism includes the motor 1 being fixed on crossbeam 11, guides lock dog 51 and position-limit mechanism 4, and motor 1 is connected with controller；The axle connection wire rod 2 of motor 1, complete on screw mandrel 2 is configured with nut assembly 3；Nut assembly 3 includes nut 31 and follow-up unit rigidly connected with nut 31 7, and it is secondary that nut 31 and screw mandrel 2 constitute screw, is provided with gear frame 9, can be movable relatively between gear frame 9 and nut 31 outside nut 31；Torsion spring 10 it is provided with between gear frame 9 and nut 31, torsion spring 10 applies pressure for support to follow-up unit 7 with gear frame 9, gear frame 9 branch sleeve assembly 6, during screw mandrel 2 rotates forward, drive nut 31 to move with follow-up unit 7 simultaneously, when moving to follow-up unit 7 and guiding after lock dog 51 contacts, follow-up unit 7 moves downwardly to position-limit mechanism 4 leading of lock dog 51 upper surface of guiding and is stopped by this position-limit mechanism 4, and follow-up unit 7 is rotated into the space between side and the position-limit mechanism 4 of guiding lock dog 51 with screw mandrel 2 and is locked；When screw mandrel 2 rotates backward, follow-up unit 7 rotates backward with screw mandrel 2 and unlocks, then along screw mandrel 2 axially-movable to the restriction departing from guiding lock dog 51.Guide lock dog 51 and have one towards the side of position-limit mechanism 4, between this side and position-limit mechanism 4, form the space that can fall into follow-up unit 7.Side is to limit the inclined-plane that follow-up unit 7 ejects, angle between side and vertical plane is 0-10 °, and in this angular range, guiding lock dog 51 can apply active force to follow-up unit 7, follow-up unit 7 will not be caused again by locked problem because angle is excessive, this angle is preferably 3 °.And in gear frame 9, also have the mechanism limiting nut 31 with screw mandrel 2 rotational angle range, this mechanism is a space, follow-up unit 7 on nut 31 moves up and down with nut 31 within this space, the top and bottom in this space define the slewing area of follow-up unit 7, and then define slewing area when nut 31 moves with screw mandrel 2.

As shown in Figure 7, as the first embodiment, guide lock dog 51 and there is the smooth upper surface that a guiding follow-up unit 7 moves to position-limit mechanism 4, in follow-up unit 7 motor process, when it is not with guiding lock dog 51 upper surface, it is in free state, i.e. it is positioned at the lower end in the space that above-mentioned restriction follow-up unit 7 rotates, the torsion spring 10 being arranged between nut 31 and gear frame 9 may be configured as being in the compressive state of relaxation state or less, twisting resistance is not applied to nut 31, or apply less twisting resistance to nut 31, can make nut 31 in driving follow-up unit 7 to run, more steady.When follow-up unit 7 is by guiding lock dog 51 upper surface, torsion spring 10 is compressed, torsion is applied to nut 31, thus, ensure that follow-up unit 7 can be after touching limiting plate 13, rotated the twisting resistance driving nut 31 and torsion spring 10 to apply by screw mandrel 2, limiting plate 13 and the space guided between lock dog 51 can be smoothly entered.

As shown in Figure 8, as the second embodiment, the slide rail 5 moved for follow-up unit 7 also it is installed with on crossbeam 11, this slide rail 5 connects with guiding lock dog 51 and seamlessly transits with the upper surface guiding lock dog 51, it is specially, guide lock dog 51 and be arranged on slide rail 5 one end near limiting component, and there is the upper surface of level, connect with the upper surface of slide rail 5 and become an integral level surface.After slide rail 5 is set, follow-up unit 7 i.e. with slide rail 5 upper surface can moving back and forth on this upper surface, under this setup, follow-up unit 7 is between the top and bottom in the space that above-mentioned restriction follow-up unit 7 rotates, not with upper end or lower end in contact, now the torsion spring 10 between nut 31 and gear frame 9 is in compressive state, after follow-up unit 7 moves to contact with limiting plate 13, the twisting resistance that nut 31 is applied by the power of screw mandrel 2 rotation drive nut 31 rotation and torsion spring 10, ensure that follow-up unit 7 can enter limiting plate 13 and the space guided between lock dog 51 smoothly.Slide rail 5 is set, makes follow-up unit 7 move under the restriction of slide rail 5, it is possible to increase the stationarity of nut assembly 3 motion further.

As shown in Fig. 9 to Figure 12, gear frame 9 has the installation portion 91 being connected with sleeve assembly 6, installation portion 91 upwardly extends and forms the nut installation portion being made up of four root posts 92, nut 31 is arranged in the space that four root posts 92 are constituted, two root post 92 tops towards crossbeam 11 side are provided with the spacer pin 12 limiting nut 31 with screw mandrel 2 rotational angle range wherein, therefore, rotation space when nut 31 rotates is defined with screw mandrel 2 between bottom and the spacer pin 12 of two root posts 92 of spacer pin 12 and crossbeam 11 side, spacer pin 12 is above-mentioned upper end, between two root posts 92, the bottom in space is then lower end.The external diameter of nut 31 is more than the distance between two heel posts 92, therefore nut 31 is limited in the space between two heel posts 92, when nut 31 is along screw mandrel 2 axially-movable, by the column 92 of not homonymy is applied thrust, gear frame 9 is driven to move with nut 31, nut 31 is made up of inner ring and outer ring, inner ring and screw mandrel 2 threaded engagement, outer ring sleeve cooperates on inner ring and by anti-slop serrations, outer ring is outward extended with the mounting seat of follow-up unit 7 towards crossbeam 11 side, mounting seat has a screw, follow-up unit 7 has a screw rod, screw rod is screwed in screw, make follow-up unit 7 and the fixing connection of nut 31.Follow-up unit 7 can use roller, it is possible to is the parts that other types smooth surface running resistance is little, such as ganoid sliding shoe etc..Use roller to arrange in pairs or groups with guiding lock dog 51, the running resistance of nut assembly 3 can be reduced when by guiding lock dog 51 surface to greatest extent, promote the use stationarity of system.The both sides, outer ring of nut 31 lay respectively between the adjacent upright posts 92 of correspondence, and screw mandrel 2 drives gear frame 9 to move axially along screw mandrel 2 by nut 31 outer ring.Nut assembly 3 also comprises and applies twisting resistance torsion spring 10 to nut 31, one end rides against on gear frame 9, the other end rides against on nut 31, torsion spring uses the internal diameter model more than screw mandrel 2 diameter, it is enclosed within screw mandrel 2 outside, nut 31 outer ring is outward extended with block 32, and one end rides against on this block 32.

nullAs shown in figure 13，Position-limit mechanism 4 includes a limiting plate being arranged on crossbeam 11 13，This limiting plate 13 has towards the side guiding lock dog 51，This side and the side guiding lock dog 51 are configured to fall into the space of follow-up unit 7，Limiting plate 13 is rotatably installed on crossbeam 11 by bearing pin 14，This limiting plate 13 has the riser 26 of bending towards guiding lock dog 51 side，The angle of this riser 26 manufactures when applying according to reality，It is specially，When follow-up unit 7 does not contacts with riser 26，The upper semisection of this bending riser 26 is vertical，Lower semisection is to the direction bending guiding lock dog 51，And after follow-up unit 7 contacts with riser 26，Limiting plate 13 is driven to rotate，After rotating stopping，Lower semisection becomes vertical direction，Upper semisection is to the direction bending guiding lock dog 51，The bending degree of riser 26，Rotational angle according to limiting plate 13 and set，If the rotational angle of limiting plate 13 is α，So between upper semisection and the lower semisection of riser 26, the angle at folded obtuse angle is 180 ° of-α；It is additionally provided with back-moving spring between limiting plate 13 and bearing pin 14, back-moving spring can be torsion spring, torsion spring set is on bearing pin 14, its one end is fixed on limiting plate 13, the other end is fixed on crossbeam 11, and limiting plate 13 can switch 15 by its edge triggered signal in spinning movement, and limiting plate 13 has waist hole 27, being provided with spacer pin 19 on crossbeam 11, spacer pin 19 limits limiting plate 13 anglec of rotation in stretching into waist hole 27.

As shown in Figure 5, Figure 6, fixed mount 40 being additionally provided with guide and limit bar 42, its one end is fixing with fixed mount 40 to be connected, and the other end is free end；Limiting plate 13 is rotatably installed on crossbeam 11, and when door 48 is closed under drive mechanism drives, limiting plate 13 rotates until stopping the free end of guide and limit bar 42, limits door return；When door 48 is opened under drive mechanism drives, limiting plate 13 inverts and releases the stop to guide and limit bar 42 free end, makes door back move, after limiting plate 13 inverts and releases the stop to guide and limit bar 42 free end, guide and limit bar 42 approaches limiting plate 13 edge, limits limiting plate 13 and rotates.

nullSuch as Figure 13、Shown in Figure 14，Position-limit mechanism 4 also includes a man-operated mechanism，This man-operated mechanism includes a fixed support being arranged on crossbeam 11 20 and a travel(l)ing rest being arranged on bearing pin 14 17，Between two supports, back-moving spring is installed，Back-moving spring can be torsion spring，Torsion spring set is at bearing pin 14，Its one end is fixed on fixed support 20，The other end is fixing with travel(l)ing rest 17 to be connected，Follow-up unit 7 can be transferred in rotary course from the space guided between lock dog 51 and position-limit mechanism 4 by travel(l)ing rest 17，It is specially，The slide block 21 of one bending can be set in travel(l)ing rest 17 bottom，It is transferred to below follow-up unit 7 from the space guided between lock dog 51 and position-limit mechanism 4 by slide block 21，Travel(l)ing rest 17 manually can drive and rotates around bearing pin 14 by stay cord 8，Manual stay cord 8 is connected with solving lock-switch，Solving lock-switch can be a manual knob，Manual stay cord 8 can be pulled during rotation.In actual applications, it actual is arranged on the position that such as subway inwall etc. can make people readily access.When turn solution lock-switch drives travel(l)ing rest 17 to rotate with bearing pin 14 for center of rotation, slide block 21 promotes follow-up unit 7 to move upward.Travel(l)ing rest 17 and limiting plate 13 are arranged on same bearing pin 14, and the two will not interfere with each other, and integrated level is high, it is possible to save installing space.

One of the present utility model singly opens sliding plug door system, can be divided into following motor process and state:

1, electronic lock a door: controller sends signal to motor 1, motor 1 is made to drive screw mandrel 2 to rotate, screw mandrel 2 drives follow-up unit 7 axially to move to position-limit mechanism 4 along screw mandrel 2 by nut assembly 3, when follow-up unit 7 touches guiding lock dog 51, move downwardly to limiting plate 13 guiding leading of lock dog 51 upper surface and stopped by this limiting plate 13, follow-up unit 7 is rotated into the space between side and the limiting plate 13 of guiding lock dog 51 with screw mandrel 2 and is locked, in the process, limiting plate 13 rotates, trigger the signaling switch 15 being arranged on below, after signaling switch 15 sends, to controller, the signal that puts in place, controller controls motor 1 stall, complete to lock a door.Now, it is anterior that limiting plate 13 is blocked in guide and limit bar 42 free end, owing to door is the most locked, thus without being opened easily.When the torsion spring on limiting plate 13 lost efficacy, follow-up unit 7 is after producing between guiding lock dog 51 and limiting plate 13, limiting plate 13 can not autonomous return, thus can not trigger signaling switch 15, and cause enabling signal mistake, now owing to being provided with guide and limit bar 42, the plug that door is opened pulls and is blocked, it is unable to open, it is to avoid occur unexpected.

2, electric open-door: controller sends signal to motor 1, motor 1 is made to drive screw mandrel 2 to rotate backward, follow-up unit 7 rotates backward with screw mandrel 2 and unlocks to the restriction departing from guiding lock dog 51, and depart from limiting plate 13, limiting plate 13 is return under the effect of torsion spring, releasing the stop to guide and limit bar 42, trigger signaling switch 15 and send unlocking signal to controller, then limiting component is along screw mandrel 2 axially-movable.When follow-up unit 7 moves to screw mandrel 2 other end, motor 1 stall, complete to open the door, now guide and limit bar 42 is in the top of limiting plate 13 and can limit limiting plate 13 reversed turning, it is to avoid false touch signaling switch.

3, manually locking a door: manual actuation sleeve assembly 6, make nut assembly 3 axially move to position-limit mechanism 4 at screw mandrel 2, now screw mandrel 2 is passive rotation.When follow-up unit 7 touches guiding lock dog 51, move downwardly to limiting plate 13 guiding leading of lock dog 51 upper surface and stopped by this limiting plate 13, follow-up unit 7 is rotated into the space between side and the limiting plate 13 of guiding lock dog 51 with screw mandrel 2 and is locked, in the process, limiting plate 13 rotates, trigger the signaling switch 15 being arranged on below, after signaling switch 15 sends, to controller, the signal that puts in place, complete to lock a door.

4, open Door by Hand: during locked door condition, lock-switch is solved by rotating, manual stay cord 8 is made to pull travel(l)ing rest 17 to do rotationally clockwise around bearing pin 14, the slide block 21 of travel(l)ing rest 17 is stirred from bottom by follow-up unit 7, follow-up unit 7 is made to leave latched position, torsion spring drives limiting plate 13 to rotate clockwise around bearing pin 14 simultaneously, and trigger signaling switch 15, after unclamping solution lock-switch, travel(l)ing rest 17 rotates to original position under the driving of back-moving spring, then manual actuation controlled device 6, nut assembly 3 is made axially to move to the direction away from position-limit mechanism 4 at screw mandrel 2, realization opens Door by Hand.

The above is only preferred implementation of the present utility model; it is noted that, for those skilled in the art; on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (26)

1. singly open a sliding plug door system, draw track (41) including the drive mechanism moved back and forth for driving gate and plug； It is characterized in that: be additionally provided with a guide and limit bar (42) and limiting plate (13), described guide and limit bar (42) Holding be connected fixing with fixed mount (40), the other end is free end；Described limiting plate (13) is rotatably installed in crossbeam (11) on, when door (48) is closed under the drive of drive mechanism, limiting plate (13) rotates until stopping and guiding limit The free end of position bar (42), limits door (48) return；When door (48) is opened under the drive of drive mechanism, limit Position plate (13) inverts and releases the stop to guide and limit bar (42) free end, and door (48) back moves.

The most according to claim 1 singly open sliding plug door system, it is characterised in that: described limiting plate (13) inverts And after releasing the stop to guide and limit bar (42) free end, guide and limit bar (42) approaches limiting plate (13) edge, Limit limiting plate (13) to rotate.

The most according to claim 1 singly open sliding plug door system, it is characterised in that: described crossbeam (11) is provided with Guiding lock dog (51), described drive mechanism includes screw mandrel (2) and the nut assembly (3) driven by motor (1)；Institute State nut (31) that nut assembly (3) includes gear frame (9), is sheathed on screw mandrel (2), be fixed on nut (31) On follow-up unit (7)；Nut (31) is arranged in gear frame (9), gear frame (9) branch sleeve assembly (6)； Screw mandrel (2) drives nut assembly (3) along screw mandrel (2) axially reciprocating；During screw mandrel (2) rotates forward, When follow-up unit (7) touches guiding lock dog (51), move downwardly to guiding leading of lock dog (51) upper surface Limiting plate (13) is also stopped by this limiting plate (13), and follow-up unit (7) is rotated into guiding lock dog with screw mandrel (2) (51) the space between side and limiting plate (13) and be locked；When screw mandrel (2) rotates backward, follow-up unit (7) with screw mandrel (2) rotate backward to depart from guide lock dog (51) restriction and unlock, then along screw mandrel (2) Axially-movable.

The most according to claim 3 singly open sliding plug door system, it is characterised in that: limited in described gear frame (9) Determine the nut (31) mechanism with screw mandrel (2) rotational angle range.

The most according to claim 4 singly open sliding plug door system, it is characterised in that: described gear frame (9) have with The installation portion (91) that sleeve assembly (6) connects, installation portion (91) upwardly extends formation and is made up of four root posts (92) Nut installation portion, nut is arranged in the space that four root posts (92) are constituted, wherein towards crossbeam (11) side Two root posts (92) top be provided with and limit nut (31) with the spacer pin (12) of screw mandrel (2) rotational angle range.

The most according to claim 5 singly open sliding plug door system, it is characterised in that: the external diameter of described nut (31) More than the distance between two heel posts (92).

The most according to claim 5 singly open sliding plug door system, it is characterised in that: described nut (31) is by inner ring Constituting with outer ring, inner ring and screw mandrel (2) threaded engagement, outer ring sleeve cooperates, outward on inner ring and by anti-slop serrations Circle is outward extended with the mounting seat of follow-up unit (7) towards crossbeam (11) side.

The most according to claim 7 singly open sliding plug door system, it is characterised in that: described mounting seat has a screw, Follow-up unit (7) has a screw rod, and screw rod is screwed in screw, makes follow-up unit (7) and the fixing connection of nut (31).

9. according to singly opening sliding plug door system described in any one of claim 3-8, it is characterised in that: described follow-up unit (7) it is roller.

The most according to claim 7 singly open sliding plug door system, it is characterised in that: the outer ring of described nut (31) Both sides lay respectively between the adjacent upright posts (92) of correspondence, and screw mandrel (2) drives gear frame by nut (31) outer ring (9) move axially along screw mandrel (2).

11. according to singly opening sliding plug door system described in claim 3 or 5, it is characterised in that: described nut assembly (3) In also comprise to nut (31) apply twisting resistance elastomeric element (10).

12. singly open sliding plug door system according to what claim 11 was stated, it is characterised in that: described elastomeric element (10) is Torsion spring, one end rides against on gear frame (9), and the other end rides against on nut (31).

13. according to claim 12 singly open sliding plug door system, it is characterised in that: described nut (31) outer ring Being outward extended with block (32), one end rides against on this block (32).

14. according to claim 3 singly open sliding plug door system, it is characterised in that: described guiding lock dog (51) has There is the guiding follow-up unit (7) the smooth upper surface to limiting plate (13) movement.

15. according to singly opening sliding plug door system described in claim 3 or 14, it is characterised in that: described guiding lock dog (51) Have one towards the side of limiting plate (13), formed between this side and limiting plate (13) and follow-up unit (7) can be fallen into Space.

16. according to claim 15 singly open sliding plug door system, it is characterised in that: described side is for limiting The inclined-plane that follow-up unit (7) ejects.

17. according to claim 16 singly open sliding plug door system, it is characterised in that: described side and vertical plane it Between angle be 0-10 °.

18. according to singly opening sliding plug door system described in claim 3 or 14, it is characterised in that: it is additionally provided with for servo-actuated The slide rail (5) of parts (7) movement, this slide rail (5) with guide lock dog (51) connect and with guide lock dog (51) Upper surface seamlessly transits.

19. according to claim 15 singly open sliding plug door system, it is characterised in that: described limiting plate (13) leads to Crossing bearing pin to be rotatably installed on crossbeam (11), this limiting plate (13) has curved towards guiding lock dog (51) side The riser (26) of folding；It is provided with back-moving spring between limiting plate (13) and bearing pin.

20. according to claim 19 singly open sliding plug door system, it is characterised in that: described limiting plate (13) exists Spinning movement can trigger signaling switch (15).

21. according to claim 19 singly open sliding plug door system, it is characterised in that: on described limiting plate (13) Being provided with waist hole (27), described crossbeam (11) is provided with spacer pin (19), spacer pin (19) stretches into waist hole (27) Interior restriction limiting plate (13) anglec of rotation.

22. according to singly opening sliding plug door system described in claim 3,19 or 20, it is characterised in that: also include one Man-operated mechanism, this man-operated mechanism include a fixed support (20) being arranged on crossbeam (11) and one be arranged on pin Travel(l)ing rest (17) on axle, is provided with back-moving spring, travel(l)ing rest (17) manually stay cord between two supports (8) drive around bearing pin rotation, can be by follow-up unit (7) from guiding lock dog (51) and limiting plate in rotation process (13) space between is transferred to.

23. according to claim 22 singly open sliding plug door system, it is characterised in that: described travel(l)ing rest (17) It is arranged on same bearing pin (14) with limiting plate (13).

24. according to claim 3 singly open sliding plug door system, it is characterised in that: described drive mechanism branch sleeve Assembly (6), sleeve assembly (6) connects door (48) by taking door frame；Described sleeve assembly (6) is provided with and draws with plug The roller that track (41) matches；Hanger (44) it is provided with at described crossbeam (11) two ends, flat between hanger (44) Row is provided with long guide pillar (45), and sleeve assembly (6) can be in the upper reciprocating motion of long guide pillar (45).

25. according to claim 24 singly open sliding plug door system, it is characterised in that: described long guide pillar (45) two End is through hanger (44), and arranges rolling member in end, is provided with one group of mounting bracket (43) on fixed mount (40), Rolling member matches with the slideway being located at mounting bracket (43) inner side.

26. according to claim 24 singly open sliding plug door system, it is characterised in that: described mounting bracket (43) Between be provided with synchronizing bar (47), synchronizing bar (47) two ends are fixing connects transmission arm (46), and each transmission arm (46) leads to Cross connecting rod to be flexibly connected with hanger (44).