CN205531746U - Spiral drive control system - Google Patents

Abstract

The utility model discloses a spiral drive control system, including being fixed in actuating mechanism, direction locking piece, the stop gear on the crossbeam, actuating mechanism includes by motor drive's lead screw and nut component, nut component includes that gear frame, cover locate nut on the lead screw, fix the follow -up part on the nut, the nut is installed in the gear frame, transmission frame connected control object, lead screw reciprocating axially is followed to lead screw drive nut subassembly, the lead screw forward rotates the in -process, when follow -up part touches the direction locking piece, stops to stop gear and by this stop gear in the downstream of leading of direction locking piece upper surface, and follow -up part rotates the side that gets into the locking piece that leads and the space between the stop gear along with the lead screw and the quilt is locked, during the lead screw antiport, follow -up part relieves the locking along with lead screw antiport to the restriction that breaks away from the locking piece that leads, then along lead screw axial motion. The utility model provides an electromagnetic lock in the safe problem of inefficacy chronozone, also than mechanical lock structure more simple reliably.

Description

Screw drives control system

Technical field

This utility model relates to automatic control system field, specifically a kind of screw drives control system.

Background technology

Screw drives control system, generally electric motor driven screw, drive the nut assembly being arranged on screw rod to carry out back and forth Motion, and then drive the controlled device being connected with nut assembly.Typically, screw drives control system more application in Rail Door, Electrically operated gate field, it the most also has locking and unlocking function.It is commonly used to the screw drives in above-mentioned field Control system, is locked nut assembly by electromagnetic lock, and then realizes the function locked a door.The screw drives of this form Control system, electromagnetic lock must be energized the stability that guarantee is locked a door at any time, if after electromagnetic lock power-off, then can exist Door automatically opens up risk, and enters line-locked structure with mechanical lock opposite house in prior art, mostly there is baroque asking Topic, as the system being mainly made up of frame for movement, structure complexity can bring poor reliability, from great, wayward etc. Problem, especially when being applied to public transport field, can threaten the personal safety of passenger.

Utility model content

Utility model purpose: a kind of screw drives control system that this utility model provides, to solve in prior art, should The problem that can automatically open up with the power-off back door existing for the door system of electromagnetic lock, and apply the door system of mechanical lock to be deposited Structure complicated, from great, the problem such as wayward.

Technical scheme: for solving above-mentioned technical problem, a kind of screw drives control system of the present utility model, including fixing Drive mechanism on crossbeam, guiding lock dog, position-limit mechanism；Described drive mechanism includes by motor-driven screw mandrel and spiral shell Female component；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, and gear frame connects controlled device；Screw mandrel drives nut assembly along screw mandrel axially reciprocating； During screw mandrel rotates forward, when follow-up unit touches guiding lock dog, move downward guiding leading of lock dog upper surface Stopping to position-limit mechanism and by this position-limit mechanism, follow-up unit is rotated into guiding side and the position-limit mechanism of lock dog with screw mandrel Between space and be locked；When screw mandrel rotates backward, follow-up unit rotates backward to departing from the limit guiding lock dog with screw mandrel Make and unlock, then along screw mandrel axially-movable.

Further, described gear frame has restriction nut with the mechanism of screw mandrel rotational angle range, thus limit servo-actuated portion The rotation of wide-angle occurs because of vibrations when part moves with nut.

Further, described gear frame has the installation portion being connected with controlled device, and installation portion upwardly extends formation by four The nut installation portion that column is constituted, nut is arranged in the space that four root posts are constituted, wherein towards the two of crossbeam side Root post top is provided with the spacer pin limiting nut with screw mandrel rotational angle range.

Further, the external diameter of described nut is more than the distance between two heel posts, and therefore nut is limited in two heel posts Between space in, when nut is along screw mandrel axially-movable, by the column of not homonymy is applied thrust, drive gear frame Move with nut.

Further, described nut is made up of inner ring and outer ring, and inner ring coordinates with wire rod thread, outer ring sleeve on inner ring also Being cooperated by anti-slop serrations, 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 servo-actuated Parts and the fixing connection of nut.

Further, described follow-up unit is roller, uses roller and guides lock dog collocation, by guiding lock dog surface Time can reduce the running resistance of nut assembly 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 passes through nut outer ring Gear frame is driven to move axially along screw mandrel.

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 position-limit mechanism.

Further, described guiding lock dog has one towards the side of position-limit mechanism, is formed between this side and position-limit mechanism The space of follow-up unit can be fallen into.

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, has both guided lock dog Follow-up unit can be applied active force, follow-up unit will not be caused because angle is excessive again by locked problem, this angle is excellent Elect 3 ° as.

Further, be additionally provided with the slide rail moved for follow-up unit, this slide rail with guide lock dog connect and with guide lock dog Upper surface seamlessly transit.Slide rail is set, makes follow-up unit move under the restriction of slide rail, it is possible to increase nut further The stationarity of component movement.

Further, described position-limit mechanism includes a limiting plate being arranged on crossbeam, and this limiting plate has one side guide To the side of lock dog, this side and the side guiding lock dog are configured to fall into the space of follow-up unit.

Further, described limiting plate is rotatably installed on crossbeam by bearing pin, and this limiting plate is towards guiding lock dog one Side has the riser of bending；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 stretches in waist hole Limit the limiting plate anglec of rotation.

Further, described position-limit mechanism includes a man-operated mechanism, and this man-operated mechanism includes that one is arranged on crossbeam Fixed support and a travel(l)ing rest being arranged on bearing pin, be provided with back-moving spring between two supports, and travel(l)ing rest exists Follow-up unit can be transferred to from the space guided between lock dog and position-limit mechanism by rotary course.

Further, described travel(l)ing rest and limiting plate are arranged on same bearing pin, and the two will not interfere with each other, And integrated level is high, it is possible to save installing space.

Beneficial effect: a kind of screw drives control system of the present utility model, nut assembly and guiding lock dog, position-limit mechanism Combination, solve prior art electromagnetic lock lost efficacy time door automatically open up, the problem bringing security risk, also ratio is existing Mechanical lock structure the most simple and reliable, and nut assembly is relative to the form matched with chute in prior art, structure More succinct, run more steady, few owing to constituting the number of components of its entirety, it is thus susceptible to processing and conducts oneself with dignity little, no Need excessive installing space.

Accompanying drawing explanation

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

Fig. 2 is the partial schematic diagram of Fig. 1, and wherein, guiding lock dog is the first embodiment；

Fig. 3 is the partial schematic diagram of Fig. 1, and wherein, guiding lock dog is the second way coordinated with slide rail；

Fig. 4 be in Fig. 1 A-A to nut assembly structural representation；

Fig. 5 is the combinative structure schematic diagram of nut assembly and gear frame；

Fig. 6 is gear frame structural representation；

Fig. 7 is nut structure schematic diagram；

Fig. 8 is to guide lock dog and position-limit mechanism, the mated condition schematic diagram of follow-up unit；

Fig. 9 is man-operated mechanism structural representation.

Detailed description of the invention

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

A kind of screw drives control system as shown in Figures 1 to 9, motor 1 that this system includes being fixed on crossbeam 11, Guiding lock dog 51 and position-limit mechanism 4, motor 1 is connected with controller；The axle connection wire rod 2 of motor 1, at screw mandrel 2 Upper the most complete it is configured with nut assembly 3；Nut assembly 3 includes nut 31 and follow-up unit rigidly connected with nut 31 7, it is secondary that nut 31 and screw mandrel 2 constitute screw, is provided with gear frame 9, gear frame 9 and nut outside nut 31 Can be movable relatively between 31；Being provided with torsion spring 10 between gear frame 9 and nut 31, torsion spring 10 is with gear frame 9 for propping up Support applies pressure to follow-up unit 7, and gear frame 9 connects controlled device 6, and in a particular application, this controlled device 6 can For the Electric plug sliding door of subway in field of track traffic or sliding door, or the Electrically operated gate of other field；Screw mandrel 2 forward turns During Dong, drive nut 31 to move with follow-up unit 7 simultaneously, connect with guiding lock dog 51 when moving to follow-up unit 7 After touch, follow-up unit 7 moves downwardly to position-limit mechanism 4 and by this position-limit mechanism 4 leading of lock dog 51 upper surface of guiding Stop, follow-up unit 7 with screw mandrel 2 be rotated into guide lock dog 51 side and position-limit mechanism 4 between space and quilt Locking；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.Guide lock dog 51 and have one towards the side of position-limit mechanism 4, this side The space that can fall into follow-up unit 7 is formed between face and position-limit mechanism 4.Side is ejected for limiting follow-up unit 7 Inclined-plane, the angle between side and vertical plane is 0-10 °, in this angular range, guide lock dog 51 can be to servo-actuated Parts 7 apply active force, and follow-up unit 7 will not be caused again by locked problem because angle is excessive, and this angle is preferably 3°.And in gear frame 9, also having the mechanism limiting nut 31 with screw mandrel 2 rotational angle range, this mechanism is a sky Between, the follow-up unit 7 on nut 31 moves up and down with nut 31 within this space, and the top and bottom in this space limit The slewing area of follow-up unit 7, and then define slewing area when nut 31 moves with screw mandrel 2.

As in figure 2 it is shown, as the first embodiment, guide lock dog 51 and there is a guiding follow-up unit 7 to position restrainer The smooth upper surface that structure 4 moves, in follow-up unit 7 motor process, when it does not connects with guiding lock dog 51 upper surface When touching, it is in free state, is i.e. positioned at the lower end in the space that above-mentioned restriction follow-up unit 7 rotates, is arranged on nut 31 And the torsion spring 10 between gear frame 9 may be configured as being in the compressive state of relaxation state or less, does not executes to nut 31 Add twisting resistance, or apply less twisting resistance to nut 31, can make nut 31 drive follow-up unit 7 run in, More steady.When follow-up unit 7 is by guiding lock dog 51 upper surface, torsion spring 10 is compressed, and applies to nut 31 Torsion, thereby it is ensured that follow-up unit 7 can be rotated by screw mandrel 2 and drive nut after touching limiting plate 13 31 and the twisting resistance that applies of torsion spring 10, limiting plate 13 and the space guided between lock dog 51 can be smoothly entered.

As it is shown on figure 3, as the second embodiment, crossbeam 11 is also installed with and moves for follow-up unit 7 Slide rail 5, this slide rail 5 with guide lock dog 51 connect and with guide lock dog 51 upper surface seamlessly transit, specifically, Guide lock dog 51 and be arranged on slide rail 5 one end near limiting component, and there is the upper surface of level, upper with slide rail 5 Surface connects becomes an integral level surface.After arranging slide rail 5, follow-up unit 7 is i.e. with slide rail 5 upper surface also Can move back and forth on this upper surface, under this setup, follow-up unit 7 is positioned at above-mentioned restriction follow-up unit 7 turns Between the top and bottom in dynamic space, not with upper end or lower end in contact, the now torsion between nut 31 and gear frame 9 Spring 10 is in compressive state, and after follow-up unit 7 moves to contact with limiting plate 13, screw mandrel 2 rotates and drives nut 31 The twisting resistance that nut 31 is applied by the power rotated and torsion spring 10, it is ensured that follow-up unit 7 can enter limiting plate smoothly Space between 13 and guiding lock dog 51.Slide rail 5 is set, makes follow-up unit 7 move under the restriction of slide rail 5, energy Enough stationarities increasing nut assembly 3 motion further.

As shown in Figures 4 to 6, gear frame 9 has the installation portion 91 being connected with controlled device 6, and installation portion 91 is upwards Extending and form 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 restriction nut 31 with screw mandrel 2 rotational angle range wherein Spacer pin 12, therefore, between the bottom of two root posts 92 of spacer pin 12 and crossbeam 11 side, define nut 31 Rotation space when rotating with screw mandrel 2, spacer pin 12 is above-mentioned upper end, and the end in space between two root posts 92 Portion is then lower end.The external diameter of nut 31 is more than the distance between two heel posts 92, and therefore nut 31 is limited in both sides In space between column 92, when nut 31 is along screw mandrel 2 axially-movable, by the column 92 of not homonymy is applied Thrust, drives gear frame 9 to move with nut 31, and nut 31 is made up of inner ring and outer ring, inner ring and screw mandrel 2 spiral shell Stricture of vagina coordinate, outer ring sleeve cooperates on inner ring and by anti-slop serrations, outer ring be outward extended with towards crossbeam 11 side with The mounting seat of dynamic component 7, mounting seat has a screw, follow-up unit 7 to have a screw rod, and screw rod is screwed in screw, make with Dynamic component 7 and the fixing connection of nut 31.Follow-up unit 7 can use roller, it is possible to is other types smooth surface fortune The parts that row resistance is little, such as ganoid sliding shoe etc..Roller is used to arrange in pairs or groups with guiding lock dog 51, by guiding The running resistance of nut assembly 3 can be reduced during lock dog 51 surface to greatest extent, promote the use stationarity of system.Nut The both sides, outer ring of 31 lay respectively between the adjacent upright posts 92 of correspondence, and screw mandrel 2 drives gear frame 9 by nut 31 outer ring Move axially along screw mandrel 2.Also comprising in nut assembly 3 and apply twisting resistance torsion spring 10 to nut 31, one end is hooked On gear frame 9, the other end rides against on nut 31, and torsion spring uses the internal diameter model more than screw mandrel 2 diameter, is enclosed within Screw mandrel 2 is outside, and nut 31 outer ring is outward extended with block 32, and one end rides against on this block 32.

As shown in Figure 8, position-limit mechanism 4 includes a limiting plate being arranged on crossbeam 11 13, and this limiting plate 13 has Towards the side of 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, and this limiting plate 13 is towards guiding lock dog 51 side Having the riser 26 of bending, the angle of this riser 26 manufactures when applying according to reality, specifically, at follow-up unit 7 not When contacting with riser 26, the upper semisection of this bending riser 26 is vertically, and lower semisection bends to the direction guiding lock dog 51, And after follow-up unit 7 contacts with riser 26, drive limiting plate 13 to rotate, after rotating stopping, lower semisection becomes vertical Direction, upper semisection bends to the direction guiding lock dog 51, and the bending degree of riser 26, according to the angle of rotation of limiting plate 13 Spend and set, if the rotational angle of limiting plate 13 is α, then folded obtuse angle between upper semisection and the lower semisection of riser 26 Angle be 180 ° of-α；Being 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, and its one end is fixed on limiting plate 13, and the other end is fixed on crossbeam 11, limiting plate 13 15 can be switched by its edge triggered signal in spinning movement, limiting plate 13 have waist hole 27, on crossbeam 11 Being provided with spacer pin 19, spacer pin 19 limits limiting plate 13 anglec of rotation in stretching into waist hole 27.

As shown in Figure 8, Figure 9, position-limit mechanism 4 also includes a man-operated mechanism, and this man-operated mechanism includes that one is arranged on Fixed support 20 on crossbeam 11 and a travel(l)ing rest being arranged on bearing pin 14 17, be provided with between two supports Back-moving spring, back-moving spring can be torsion spring, and torsion spring set is at bearing pin 14, and its one end is fixed on fixed support 20, separately One end is fixing with travel(l)ing rest 17 to be connected, and travel(l)ing rest 17 can be by follow-up unit 7 from guiding lock dog in rotary course Space between 51 and position-limit mechanism 4 is transferred to, specifically, dialling of a bending can be arranged in travel(l)ing rest 17 bottom Motion block 21, it is dialled below follow-up unit 7 from the space guided between lock dog 51 and position-limit mechanism 4 by slide block 21 Going out, travel(l)ing rest 17 manually can drive and rotates around bearing pin 14 by stay cord 8, and manual stay cord 8 is connected with solving lock-switch, Solving lock-switch can be a manual knob, can pull manual stay cord 8 during rotation.In actual applications, its actual peace It is contained 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 With bearing pin 14 for center of rotation rotate time, slide block 21 promotes follow-up unit 7 to move upward.Travel(l)ing rest 17 and limit Position plate 13 is 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 peace Dress space.

A kind of double open plug door system of the present utility model, its nut assembly 3 and guiding are between lock dog 51, limiting component Coordinating compact, the structure of all parts is the most relatively easy, both steady in running, is not susceptible to again fault, and Due to simple in construction, moreover it is possible to bring the Quality Down of whole system, and become to produce cost reduction, in large-area applications in track During the field such as traffic, vehicle, there is good effect.

A kind of screw drives control system of the present utility model, can be divided into following motor process and state:

1, electric lock: controller sends signal to motor 1, makes motor 1 drive screw mandrel 2 to rotate, and screw mandrel 2 passes through Nut assembly 3 drives follow-up unit 7 axially to move to position-limit mechanism 4, when follow-up unit 7 touches guiding along screw mandrel 2 During lock dog 51, move downwardly to limiting plate 13 guiding leading of lock dog 51 upper surface and stopped by this limiting plate 13, with Dynamic component 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, at this During, limiting plate 13 rotates, and triggers the signaling switch 15 being arranged on below, and signaling switch 15 sends to controller Putting in place after signal, controller controls motor 1 stall, completes locking.

2, electronic unblock: controller sends signal to motor 1, makes motor 1 drive screw mandrel 2 to rotate backward, servo-actuated portion Part 7 rotates backward with screw mandrel 2 and unlocks to the restriction departing from guiding lock dog 51, and departs from limiting plate 13, limit Position plate 13 return under the effect of torsion spring, triggers signaling switch 15 and sends unlocking signal to controller, then limiting component Along screw mandrel 2 axially-movable.When follow-up unit 7 moves to screw mandrel 2 other end, motor 1 stall.

3, manual locking: manual actuation controlled device 6, makes 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, guiding lock dog 51 upper surface Leading and move downwardly to limiting plate 13 and stopped by this limiting plate 13, follow-up unit 7 is rotated into guiding lock dog with screw mandrel 2 Space between side and the limiting plate 13 of 51 and be locked, in the process, limiting plate 13 rotates, and triggering is arranged on Signaling switch 15 below, after signaling switch 15 sends, to controller, the signal that puts in place, controller controls motor 1 stall, Complete locking.

4, manual unlocking: during lock-out state, solves lock-switch by rotating so that manual stay cord 8 pulls travel(l)ing rest 17 Doing 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, makes Follow-up unit 7 leaves latched position, and torsion spring drives limiting plate 13 to rotate clockwise around bearing pin 14 simultaneously, and triggers signal Switch 15, after unclamping solution lock-switch, travel(l)ing rest 17 rotates to original position under the driving of back-moving spring, then hands Dynamic driving controlled device 6, makes nut assembly 3 axially move to the direction away from position-limit mechanism 4 at screw mandrel 2, it is achieved hands Dynamic unblock.

The above is only preferred implementation of the present utility model, it should be pointed out that: for the ordinary skill of the art For personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improve Also protection domain of the present utility model is should be regarded as with retouching.

Claims (22)

1. a screw drives control system, it is characterised in that: the drive mechanism that includes being fixed on crossbeam (11), Guide lock dog (51), position-limit mechanism (4)；Described drive mechanism includes screw mandrel (2) and the spiral shell driven by motor (1) Female component (3)；Described nut assembly (3) includes gear frame (9), be sheathed on screw mandrel (2) nut (31), The follow-up unit (7) being fixed on nut (31)；Nut (31) is arranged in gear frame (9), gear frame (9) Connect controlled device (6)；Screw mandrel (2) drives nut assembly (3) along screw mandrel (2) axially reciprocating；Screw mandrel (2) During rotating forward, when follow-up unit (7) touches guiding lock dog (51), guiding the upper table of lock dog (51) Leading of face moves downwardly to position-limit mechanism (4) and is stopped by this position-limit mechanism (4), and follow-up unit (7) is with screw mandrel (2) It is rotated into the space between side and the position-limit mechanism (4) of guiding lock dog (51) and is locked；Screw mandrel (2) is reverse During rotation, follow-up unit (7) rotates backward with screw mandrel (2) and unlocks to the restriction departing from guiding lock dog (51), Then along screw mandrel (2) axially-movable.

Screw drives control system the most according to claim 1, it is characterised in that: described gear frame has in (9) Limit the nut (31) mechanism with screw mandrel (2) rotational angle range.

Screw drives control system the most according to claim 2, it is characterised in that: described gear frame (9) has The installation portion (91) being connected with controlled device (6), installation portion (91) upwardly extends formation by four root posts (92) structure The nut installation portion become, nut is arranged in the space that four root posts (92) are constituted, wherein towards crossbeam (11) Two root posts (92) top of side is provided with the spacer pin (12) limiting nut (31) with screw mandrel (2) rotational angle range.

Screw drives control system the most according to claim 3, it is characterised in that: outside described nut (31) Footpath is more than the distance between two heel posts (92).

Screw drives control system the most according to claim 3, it is characterised in that: described nut (31) is by interior Circle and outer ring are constituted, inner ring and screw mandrel (2) threaded engagement, and 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.

Screw drives control system the most according to claim 5, 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).

7. according to the screw drives control system described in any one of claim 1-6, it is characterised in that: described servo-actuated portion Part (7) is roller.

Screw drives control system the most according to claim 5, it is characterised in that: outside described nut (31) Circle both sides lay respectively between the adjacent upright posts (92) of correspondence, and screw mandrel (2) drives transmission by nut (31) outer ring Frame (9) moves axially along screw mandrel (2).

9. according to the screw drives control system described in claim 1 or 3, it is characterised in that: described nut assembly (3) In also comprise to nut (31) apply twisting resistance elastomeric element (10).

Screw drives control system the most according to claim 9, it is characterised in that: described elastomeric element (10) For torsion spring, one end rides against on gear frame (9), and the other end rides against on nut (31).

11. screw drives control systems according to claim 10, it is characterised in that: described nut (31) is outward Circle is outward extended with block (32), and one end rides against on this block (32).

12. screw drives control systems according to claim 1, it is characterised in that: described guiding lock dog (51) There is the guiding follow-up unit (7) the smooth upper surface to limiting plate (13) movement.

13. according to the screw drives control system described in claim 1 or 12, 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) can fall into servo-actuated The space of parts (7).

14. screw drives control systems according to claim 13, it is characterised in that: described side is for limiting The inclined-plane that follow-up unit processed (7) ejects.

15. screw drives control systems according to claim 14, it is characterised in that: described side and vertical plane Between angle be 0-10 °.

16. according to the screw drives control system described in claim 1 or 12, it is characterised in that: be additionally provided with for The slide rail (5) of dynamic component (7) movement, this slide rail (5) with guide lock dog (51) connect and with guide lock dog (51) Upper surface seamlessly transit.

17. screw drives control systems according to claim 1, it is characterised in that: described position-limit mechanism (4) Including a limiting plate (13) being arranged on crossbeam (11), this limiting plate (13) has one side to guiding lock dog (51) Side, this side with guide lock dog (51) side be configured to fall into the space of follow-up unit (7).

18. screw drives control systems according to claim 17, it is characterised in that: described limiting plate (13) Being rotatably installed on crossbeam (11) by bearing pin, this limiting plate (13) has towards guiding lock dog (51) side The riser (26) of bending；It is provided with back-moving spring between limiting plate (13) and bearing pin.

19. screw drives control systems according to claim 18, it is characterised in that: described limiting plate (13) Signaling switch (15) can be triggered in spinning movement.

20. screw drives control systems according to claim 18, it is characterised in that: 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.

21. according to the screw drives control system described in claim 1,18 or 19, it is characterised in that: described spacing Mechanism (7) includes a man-operated mechanism, and this man-operated mechanism includes a fixed support (20) being arranged on crossbeam (11) With a travel(l)ing rest being arranged on bearing pin (17), back-moving spring, travel(l)ing rest (17) are installed between two supports Manually stay cord (8) drives and rotates around bearing pin, can be by follow-up unit (7) from guiding lock dog (51) in rotation process And the space between limiting plate (13) is transferred to.

22. screw drives control systems according to claim 21, it is characterised in that: described travel(l)ing rest (17) It is arranged on same bearing pin (14) with limiting plate (13).