CN101229893B - Elevator device - Google Patents

Abstract

An emergency stop device for an elevator, wherein an output part is electrically connected to a car speed sensor for detecting the speed of a car, an emergency stop mechanism capable of braking the car is mounted on the car, the output part outputs operating signals to the emergency stop mechanism when the speed of the car detected by the car speed sensor reaches a set over-speed, and the emergency stop mechanism is operated by the inputted operating signals to brake the car.

Description

Lift appliance

The application divides an application, and the application number of original bill application is 200480001100.0, and international application no is PCT/JP2004/003557, and the applying date is on March 17th, 2004, and denomination of invention is " emergency braking device of lift appliance and elevator ".

Technical field

The present invention relates to make the lift appliance that car goes up and down and make the mandatory elevator emergency stop device that stops of car that goes up and down with abnormal speed in hoistway.

Background technology

In lift appliance in the past, use governor for making the emergency braking device starting that is installed on the car.Open the spy and to have disclosed a kind of governor and a kind of emergency braking device in the 2001-80840 communique, this governor detects the rising or falling speed of car unusually, and this emergency braking device is pushed wedge and stoped car to fall to the car guide rail of guiding car.On the rope sheave of governor, be wound with and the car synchronization-moving speed controller rope that goes up and down.Snubber chain is installed on car, and this snubber chain is connected with speed controller rope, and with the interlock of the wedge of emergency braking device.In governor,, pin speed controller rope when detecting car speed when unusual.Through the pinning of speed controller rope, make snubber chain work, wedge is pushed to car guide rail.Dependence is pushed the braking force that causes by this and is stoped car to fall.

Yet, in this lift appliance, owing to when car speed rises significantly, just make the emergency braking device starting, thereby the starting of emergency braking device is big to the impact of car.

And; Because from using governor to detect car speed unusually during the braking force that produces wedge; Be inserted with the pinning of speed controller rope and the action of snubber chain; Thereby for example because the action delays of the flexible and snubber chain of the delay of the pinning of the speed controller rope in governor action, speed controller rope etc. need the time to producing braking force unusually from detecting car speed.Therefore, when producing braking force, car speed further increases, and the impact of car is further increased.And, stop preceding stopping distance to car and also increase.

And, owing to rocking etc., car makes the snubber chain vibration, may carry out misoperation.

Summary of the invention

The present invention proposes in order to solve above-mentioned problem, the objective of the invention is to obtain to shorten from lift appliance to take place unusually to producing the required time of braking force, and can preventing the lift appliance and the elevator emergency stop device of misoperation.

Lift appliance according to the present invention has: the car motion detection unit, detect the 1st car and the 2nd car actual act separately of in same hoistway, going up and down; Car door opens and closes detecting unit, is used for the open and-shut mode of above-mentioned the 1st car and the 2nd car gangway is separately detected; Efferent; According to predicting that from the information of above-mentioned car motion detection unit above-mentioned the 1st car and above-mentioned the 2nd car have collisionless; When doping collision, export cranking signal, and also be imported in this efferent from the switching detection signal of car door switching detecting unit; Under the situation that this car rises or descends when the state that open arbitrary side's of above-mentioned the 1st car and the 2nd car gangway, this efferent sends cranking signal; Emergency braking device; Be installed in respectively on above-mentioned the 1st car and above-mentioned the 2nd car; Have the car guide rail contact and the braking element that separates that can go up and down with above-mentioned the 1st car of guiding and above-mentioned the 2nd car, the input of this emergency braking device through above-mentioned cranking signal makes above-mentioned braking element push above-mentioned car guide rail to come any at least side in above-mentioned the 1st car and above-mentioned the 2nd car is braked; And delivery unit, its above-mentioned cranking signal is sent to above-mentioned emergency braking device from above-mentioned efferent.

Description of drawings

Fig. 1 is the constructional drawing of schematically illustrated 1 lift appliance according to the embodiment of the present invention.

Fig. 2 is the front elevation that the emergency braking device of Fig. 1 is shown.

Fig. 3 is the front elevation of state that emergency braking device when starting of Fig. 2 is shown.

Fig. 4 is the constructional drawing of schematically illustrated 2 lift appliance according to the embodiment of the present invention.

Fig. 5 is the front elevation that the emergency braking device of Fig. 4 is shown.

Fig. 6 is the front elevation of the emergency braking device the when starting of Fig. 5 is shown.

Fig. 7 is the front elevation that the drive division of Fig. 6 is shown.

Fig. 8 is the constructional drawing of schematically illustrated 3 lift appliance according to the embodiment of the present invention.

Fig. 9 is the constructional drawing of schematically illustrated 4 lift appliance according to the embodiment of the present invention.

Figure 10 is the constructional drawing of schematically illustrated 5 lift appliance according to the embodiment of the present invention.

Figure 11 is the constructional drawing of schematically illustrated 6 lift appliance according to the embodiment of the present invention.

Figure 12 is another routine constructional drawing that the lift appliance of Figure 11 is shown.

Figure 13 is the constructional drawing of schematically illustrated 7 lift appliance according to the embodiment of the present invention.

Figure 14 is the constructional drawing of schematically illustrated 8 lift appliance according to the embodiment of the present invention.

Figure 15 is another routine front elevation that the drive division of Fig. 7 is shown.

Figure 16 is the plane cross sectional drawing that 9 emergency braking device is shown according to the embodiment of the present invention.

Figure 17 is the partial cross sectional side elevation view that 10 emergency braking device is shown according to the embodiment of the present invention.

Figure 18 is the constructional drawing of schematically illustrated 11 lift appliance according to the embodiment of the present invention.

Figure 19 is the diagram of curves that the unusual judgment standard of car speed in the storage part that is stored in Figure 18 is shown.

Figure 20 is the diagram of curves that the unusual judgment standard of car acceleration/accel in the storage part that is stored in Figure 18 is shown.

Figure 21 is the constructional drawing of schematically illustrated 12 lift appliance according to the embodiment of the present invention.

Figure 22 is the constructional drawing of schematically illustrated 13 lift appliance according to the embodiment of the present invention.

Figure 23 illustrates the rope fastening device of Figure 22 and the constructional drawing of each rope sensor.

Figure 24 is the constructional drawing that the state that 1 main rope of Figure 23 breaks is shown.

Figure 25 is the constructional drawing of schematically illustrated 14 lift appliance according to the embodiment of the present invention.

Figure 26 is the constructional drawing of schematically illustrated 15 lift appliance according to the embodiment of the present invention.

Figure 27 illustrates the car of Figure 26 and the block diagram of door sensor.

Figure 28 is the block diagram that the state of the car gangway of Figure 27 opening is shown.

Figure 29 is the constructional drawing of schematically illustrated 16 lift appliance according to the embodiment of the present invention.

Figure 30 is the constructional drawing that the hoistway top of Figure 29 is shown.

The specific embodiment

Below, with reference to accompanying drawing preferred implementation of the present invention is described.

Embodiment 1

Fig. 1 is the constructional drawing of schematically illustrated 1 lift appliance according to the embodiment of the present invention.In the drawings, in hoistway 1, be provided with a pair of car guide rail 2.Car 3 is gone up and down in hoistway 1 by car guide rail 2 guiding.Dispose the towing machine (not illustrating) that car 3 and counterweight (not illustrating) are gone up and down in the upper end of hoistway 1.On the driving rope sheave of towing machine, be wound with main rope 4.Car 3 is suspended in the hoistway 1 by main rope 4 with counterweight.On car 3, with each car guide rail 2 opposed a pair of emergency braking device 5 that are equipped with as brake unit.Each emergency braking device 5 is configured in the bottom of car 3.Car 3 is braked through the starting of each emergency braking device 5.

And, disposing governor 6 in the upper end of hoistway 1, this governor 6 is car speed detecting units that the rising or falling speed to car 3 detects.Governor 6 has: governor main body 7 and can be with respect to the governor rope sheave 8 of governor main body 7 rotation.Dispose rotatable tension wheel 9 in the bottom of hoistway 1.Between governor rope sheave 8 and tension wheel 9, be wound with and car 3 bonded assembly speed controller ropes 10.Moving back and forth towards above-below direction of speed controller rope 10 with the connecting portion of car 3 and car 3.Like this, governor rope sheave 8 and tension wheel 9 are to rotate with the cooresponding speed of the rising or falling speed of car 3.

When the rising or falling speed of car 3 reaches the predefined the 1st when crossing speed, governor 6 makes the brake equipment starting of towing machine.And, in governor 6, being provided with switch portion 11, this switch portion 11 is efferents, crosses the fast the 2nd when crossing speed (setting speed) when the descending speed of car 3 reaches than the 1st, this efferent outputs to emergency braking device 5 to cranking signal.Switch portion 11 has contact portion 16, and this contact portion 16 relies on the bar of overrunning to carry out machinery and opens and closes, and this pole-footing of overrunning moves according to the centnifugal force of the governor rope sheave 8 that rotates.Contact portion 16 is electrically connected with battery 12 and control panel 13 through feed cable 14 and connecting cable 15 respectively, even this battery 12 is the uninterrupted power supply(ups)s that when having a power failure, also can supply power, and the running of these control panel 13 control elevators.

Between car 3 and control panel 13, be connected with control cable (removal cable).In control cable,, also contain promptly stopping of between control panel 13 and each emergency braking device 5, being electrically connected with wiring 17 except many electric wireline with the signal wire (SW).Rely on the closure of contact portion 16 from the electric power of battery 12, through the power supply circuit in feed cable 14, switch portion 11, connecting cable 15, the control panel 13 and promptly stop 17 being supplied to each emergency braking device 5 with connecting up.In addition, delivery unit has: the power supply circuit in the connecting cable 15, control panel 13 and promptly stopping with wiring 17.

Fig. 2 is the front elevation that the emergency braking device 5 of Fig. 1 is shown, and Fig. 3 is the front elevation of the emergency braking device 5 the when starting of Fig. 2 is shown.In the drawings, be fixed with load-carrying element 18 in the bottom of car 3.Emergency braking device 5 is supported by load-carrying element 18.And each emergency braking device 5 has: wedge 19 is to contact and a pair of braking element that separates with car guide rail 2; A pair of actuation part 20 is connected with wedge 19, and wedge 19 is moved with respect to car 3; And a pair of guide part 21, be fixed on the load-carrying element 18 Direction guide that will contact with car guide rail 2 by wedge 19 courts that actuation part 20 moves.A pair of wedge 19, a pair of actuation part 20 and a pair of guide part 21 are configured in the both sides of car guide rail 2 respectively symmetrically.

Guide part 21 has dip plane 22, and this dip plane 22 tilts with respect to car guide rail 2, and feasible interval with car guide rail 2 reduces up.Wedge 19 22 moves along the dip plane.Actuation part 20 has: spring 23 is to the force section of wedge 19 towards the guide part 21 side application of forces of top; And electromagnet 24, the application of force that relies on the electromagnetic force that is caused by energising to overcome spring 23 moves wedge 19 and guide part 21 discretely towards the below.

Spring 23 is connected between load-carrying element 18 and the wedge 19.Electromagnet 24 is fixed on the load-carrying element 18.Promptly stop to be connected with electromagnet 24 with wiring 17.On wedge 19, be fixed with and electromagnet 24 opposed permanent magnets 25.Energising to electromagnet 24 is carried out from battery 12 (with reference to Fig. 1) through the closure of contact portion 16 (with reference to Fig. 1).Cut off energising through break portion 16 (with reference to Fig. 1), make emergency braking device 5 startings to electromagnet 24.That is, a pair of wedge 19 relies on the elastic recovering force of spring 23 and moves towards the top with respect to car 3, pushes car guide rail 2.

Below, action is described.When normal operation, contact portion 16 closures.Like this, electric power is supplied to electromagnet 24 from battery 12.Wedge 19 relies on the electromagnetic force that is caused by energising to be attracted and remains on the electromagnet 24, separates (Fig. 2) with car guide rail 2.

When for example the speed of car 3 being risen reach the 1st to cross speed owing to the fracture of main rope 4 etc., the brake equipment starting of towing machine.When after the starting of the brake equipment of towing machine, the speed of car 3 further rises and reaches the 2nd when crossing speed, and contact portion 16 breaks off.Like this, be cut off to the energising of the electromagnet 24 of each emergency braking device 5, wedge 19 relies on the application of force of springs 23 and moves towards the top with respect to car 3.At this moment, wedge 19 is with when the dip plane 22 of guide part 21 contacts, and 22 move along the dip plane.Because should move, wedge 19 contacts with car guide rail 2 and pushes car guide rail 2.Wedge 19 through with the contacting of car guide rail 2, further mobile and engaging-in between car guide rail 2 and guide part 21 towards the top.Like this, between car guide rail 2 and wedge 19, produce big friction force, car 3 is braked (Fig. 3).

When the glancing impact of removing car 3, under the state of electromagnet 24 energisings, car 3 is risen in the closure of passing through contact portion 16.Like this, wedge 19 moves towards the below, separates with car guide rail 2.

In this lift appliance; Owing to be electrically connected with each emergency braking device 5 with battery 12 bonded assembly switch portion 11; Thereby can be sent to each emergency braking device 5 to velocity anomaly as electric cranking signal from switch portion 11 at governor 4 detected cars 3, can in the short time after the velocity anomaly that detects car 3, make car 3 brakings.Like this, can reduce the stopping distance of car 3.And, can easily make each emergency braking device 5 synchronous initiation, can make car 3 stable stopping.And,, thereby can prevent the misoperation that causes by rocking of car 3 etc. because emergency braking device 5 starts according to electric cranking signal.

And because emergency braking device 5 has: actuation part 20 makes guide part 21 side shiftings of wedge 19 towards the top; And guide part 21, comprise dip plane 22, the Direction guide that wedge 19 courts that this dip plane will be moved towards the top contact with car guide rail 2, thereby when car 3 descends, can reliably increase the pressing force of 19 pairs of car guide rails 2 of wedge.

And, because actuation part 20 has: spring 23, to wedge 19 towards the top application of force; And electromagnet 24, the application of force that overcomes spring 23 makes wedge 19 move towards the below, thereby can adopt simple structure that wedge 19 is moved.

Embodiment 2

Fig. 4 is the constructional drawing of schematically illustrated 2 lift appliance according to the embodiment of the present invention.In the drawings, car 3 has: car main body 27 is provided with car gangway 26; And car door 28, car gangway 26 is opened and closed.In hoistway 1, be provided with car speed sensor 31, this car speed sensor 31 is car speed detecting units that the speed to car 3 detects.Efferent 32 is installed in control panel 13, and this efferent 32 is electrically connected with car speed sensor 31.Battery 12 is connected with efferent 32 through feed cable 14.Be used for the electric power that the speed to car 3 detects and be supplied to car speed sensor 31 from efferent 32.Speed detection signal from car speed sensor 31 is imported into efferent 32.

In the bottom of car 3 a pair of emergency braking device 33 is installed, this emergency braking device 33 is brake units that car 3 is braked.Efferent 32 and each emergency braking device 33 are through promptly stopping with wiring 17 electrical connection each other.When the speed of car 3 is the 2nd mistake speed, outputed to emergency braking device 33 from efferent 32 as the cranking signal that starts with electric power.Emergency braking device 33 starts according to the input of cranking signal.

Fig. 5 is the front elevation that the emergency braking device 33 of Fig. 4 is shown, and Fig. 6 is the front elevation of the emergency braking device 33 the when starting of Fig. 5 is shown.In the drawings, emergency braking device 33 has: wedge 34 is to contact and the braking element that separates with car guide rail 2; Actuation part 35 is connected with the bottom of wedge 34; And guide part 36, be configured in the top of wedge 34, be fixed on the car 3.Wedge 34 and actuation part 35 are arranged to can be with respect to guide part 36 up-and-down movements.Wedge 34 along with respect to guide part 36 towards the moving of top, promptly towards the moving of guide part 36 sides, the Direction guide that contacts with car guide rail 2 by guide part 36 courts.

Actuation part 35 has: columned contact part 37 can contact with car guide rail 2 and separate; Starting mechanism 38 makes contact part 37 courts move with the direction of separating with car guide rail 2 contacts; And support portion 39, support contact part 37 and starting mechanism 38.Contact part 37 is lighter than wedge 34, so that can easily be moved by starting mechanism 38.Starting mechanism 38 has: movable part 40 can and make between contact part 37 and the disengaged position that car guide rail 2 separates at the contact position that makes 2 contacts of contact part 37 and car guide rail to move back and forth; And drive division 41, movable part 40 is moved.

In support portion 39 and movable part 40, be respectively arranged with support guide hole 42 and movable pilot hole 43.Support guide hole 42 is different each other with respect to the angle of inclination of car guide rail 2 with movable pilot hole 43.Contact part 37 is slidably mounted in support guide hole 42 and the movable pilot hole 43.Contact part 37 is slip in movable pilot hole 43 along with moving back and forth of movable part 40, moves along the length direction in support guide hole 42.Like this, contact part 37 contacts with car guide rail 2 with suitable angle and separates.When car 3 descended, when contact part 37 contacted with car guide rail 2, wedge 34 was braked with actuation part 35, towards guide part 36 side shiftings.

39 top is provided with the horizontally-guided hole 47 of extending in the horizontal direction in the support portion.Wedge 34 is slidably mounted in the horizontally-guided hole 47.That is, wedge 34 can move back and forth with respect to support portion 39 in the horizontal direction.

Guide part 36 has the dip plane 44 and contact surface 45 across car guide rail 2 configurations.Dip plane 44 tilts with respect to car guide rail 2, and feasible interval with car guide rail 2 reduces up.Contact surface 45 can contact with car guide rail 2 and separate.Along with wedge 34 and actuation part 35 move towards the top with respect to guide part 36, wedge 34 44 moves along the dip plane.Like this, wedge 34 closely moves with contact surface 45 each other, and car guide rail 2 is clamped by wedge 34 and contact surface 45.

Fig. 7 is the front elevation that the drive division 41 of Fig. 6 is shown.In the drawings, drive division 41 has: disk spring 46 is mounted in the force section on the movable part 40; And electromagnet 48, rely on the electromagnetic force that causes by energising that movable part 40 is moved.

Movable part 40 is fixed on the middle body of disk spring 46.Disk spring 46 is owing to moving back and forth of movable part 40 is out of shape.The application of force direction of disk spring 46 is owing to overturn between the contact position (solid line) of movable part 40 and the disengaged position (two pecked lines) because of the mobile distortion that causes of movable part 40.Movable part 40 relies on the application of force of disk spring 46 and remains on contact position and disengaged position respectively.That is, contact part 37 relies on the application of force of disk spring 46 to keep with the contact condition and the released state of car guide rail 2.

Electromagnet 48 has: the 1st electromagnetic portion 49 is fixed on the movable part 40; And the 2nd electromagnetic portion 50, with the 1st electromagnetic portion 49 arranged opposite.Movable part 40 can move with respect to the 2nd electromagnetic portion 50.Promptly stop to be connected with electromagnet 48 with wiring 17.The 1st electromagnetic portion 49 and the 2nd electromagnetic portion 50 are through producing electromagnetic force, repel each other to electromagnet 48 input cranking signals.That is, through importing cranking signals to electromagnet 48, the 1st electromagnetic portion 49 moves with the direction that movable part 40 courts separate with the 2nd electromagnetic portion 50.

In addition, the restoring signal of efferent 32 recovery usefulness after 5 startings of output emergency braking device when recovering.Through importing restoring signals to electromagnet 48, the 1st electromagnetic portion 49 and the 2nd electromagnetic portion 50 attract each other.Other structures are identical with embodiment 1.

Below, action is described.When normal operation, movable part 40 is positioned at disengaged position, and contact part 37 relies on the application of force of disk spring 46 and separates with car guide rail 2.Under contact part 37 and state that car guide rail 2 separates, wedge 34 keeps the interval with guide part 36, separates with car guide rail 2.

When car speed sensor 31 detected speed reach the 1st mistake speed, the brake equipment starting of towing machine.Afterwards, when the speed rising of car 3, and when car speed sensor 32 detected speed reached the 2nd mistake speed, cranking signal was outputed to each emergency braking device 33 from efferent 32.Through importing cranking signals to electromagnet 48, the 1st electromagnetic portion 49 and the 2nd electromagnetic portion 50 are repelled each other.Rely on this electromagnetic repulsive force, movable part 40 moves towards contact position.Meanwhile, contact part 37 courts move with the direction that car guide rail 2 contacts.Before movable part 40 arrived contact position, the application of force direction of disk spring 46 was in the direction of contact position upset for maintenance movable part 40.Like this, contact part 37 contacts are also pushed car guide rail 2, and wedge 34 and actuation part 35 are braked.

Because car 3 is not braked with guide part 36 but descends, thereby guide part 36 is towards the wedge 34 and actuation part 35 side shiftings of below.Owing to should move, wedge 34 is by 44 guiding along the dip plane, and car guide rail 2 is clamped by wedge 34 and contact surface 45.Wedge 34 through with the contacting of car guide rail 2, further move towards the top, engaging-in between car guide rail 2 and dip plane 44.Like this, producing big friction force between car guide rail 2 and the wedge 34 and between car guide rail 2 and contact surface 45, car 3 is braked.

When recovering, restoring signal is sent to electromagnet 48 from efferent 32.Like this, the 1st electromagnetic portion 49 and the 2nd electromagnetic portion 50 attract each other, and movable part 40 moves towards disengaged position.Meanwhile, contact part 37 courts move with the direction that car guide rail 2 separates.Before movable part 40 arrives disengaged position, the application of force direction upset of disk spring 46, movable part 40 is maintained at disengaged position.Under this state, car 3 rises, and wedge 34 is disengaged with pushing of 45 pairs of car guide rails 2 of contact surface.

In this lift appliance; Owing to not only obtain the effect identical with embodiment 1; And owing in hoistway 1, be provided with car speed sensor 31 for the speed that detects car 3, thereby need not use governor and speed controller rope, can reduce lift appliance single-piece installing space.

And because actuation part 35 has: contact part 37 can contact with car guide rail 2 and separate; And starting mechanism 38,2 contacts of contact part 37 courts and car guide rail are moved with the direction of separating, thereby, light through the weight ratio wedge 34 that makes contact part 37, can reduce the propulsive effort of 38 pairs of contact parts 37 of starting mechanism, can make starting mechanism 38 miniaturizations.And, through making contact part 37 light weights, can increase the moving velocity of contact part 37, can shorten producing the required time of braking force.

And because drive division 41 has: disk spring 46 remains on contact position and disengaged position with movable part 40; And electromagnet 48, rely on energising that movable part 40 is moved, thereby, can movable part 40 be remained on contact position or disengaged position reliably through only when movable part 40 moves, switching on to electromagnet 48.

Embodiment 3

Fig. 8 is the constructional drawing of schematically illustrated 3 lift appliance according to the embodiment of the present invention.In the drawings, be provided with in car gangway 26 and open and close a sensor 58, this opens and closes sensor 58 is that the door that the open and-shut mode to car door 28 detects opens and closes detecting unit.The efferent 59 that is installed on the control panel 13 is connected through control cable and door switching sensor 58.And car speed sensor 31 is electrically connected with efferent 59.Be imported into efferent 59 from the speed detection signal of car speed sensor 31 with from the switching detection signal that door opens and closes sensor 58.At efferent 59,, can hold the speed of car 3 and the open and-shut mode of car gangway 26 through input speed detection signal and switching detection signal.

Efferent 59 is connected with emergency braking device 33 with wiring 17 through promptly stopping.Efferent 59 is according to opening and closing the switching detection signal of sensor 58 from the speed detection signal of car speed sensor 31 and from door, under the state of opening in car gangway 26, and output cranking signal when car 3 goes up and down.Cranking signal is through promptly stopping to be sent to emergency braking device 33 with wiring 17.Other structures are identical with embodiment 2.

In this lift appliance; Because the car speed sensor 31 that the speed of car 3 is detected and the door that the open and-shut mode of car door 28 detects is opened and closed a sensor 58 be electrically connected with efferent 59; And under the state of opening in car gangway 26; When car 3 descended, cranking signal was outputed to emergency braking device 33 from efferent 59, thereby can prevent the decline of the car 3 under 26 open modes of car gangway.

In addition, can also emergency braking device 33 be turned upside down and be installed on the car 3.Like this, also can prevent the rising of the car 3 under 26 open modes of car gangway.

Embodiment 4

Fig. 9 is the constructional drawing of schematically illustrated 4 lift appliance according to the embodiment of the present invention.In the drawings, in main rope 4, run through being inserted with fracture and detecting lead 61, it is rope that the fracture to main rope 4 the detects detecting units that rupture that this fracture detects lead 61., fracture have weak current to flow through in detecting lead.Main rope 4 has non-cracking according to having or not the energising of weak current to detect.The efferent 62 that is installed on the control panel 13 is electrically connected with fracture detection lead 61.When fracture detected lead 61 fractures, the rope break signal that detects the energising shutoff signal of lead 61 as fracture was imported into efferent 62.And car speed sensor 31 is electrically connected with efferent 62.

Efferent 62 is connected with emergency braking device 33 with wiring 17 through promptly stopping.Efferent 62 is according to detecting the rope break signal of lead 61 from the speed detection signal of car speed sensor 31 and from rupturing, output cranking signal when main rope 4 ruptures.Cranking signal is through promptly stopping to be sent to emergency braking device 33 with wiring 17.Other structures are identical with embodiment 2.

In this lift appliance; Because the car speed sensor 31 that the speed of car 3 is detected and the fracture that the fracture of main rope 4 detects is detected lead 61 be electrically connected with efferent 62; And when main rope 4 ruptured, cranking signal was outputed to emergency braking device 33 from efferent 62, thereby; Detect through the speed detection of car 3 and the fracture of main rope 4, can brake the car 3 that descends with abnormal speed more reliably.

In addition, in above-mentioned example,, use fracture to detect the method that lead 61 has or not energising to detect, the tension variation of for example main rope 4 is carried out method for measuring yet also can use to running through insertion in the main rope 4 as rope fracture method of inspection.In the case, on the rope fastening device of main rope 4, tension draftomter is set.

Embodiment 5

Figure 10 is the constructional drawing of schematically illustrated 5 lift appliance according to the embodiment of the present invention.In the drawings, in hoistway 1, be provided with car position sensor 65, this car position sensor 65 is car position detecting units that the position of car 3 is detected.Car position sensor 65 and car speed sensor 31 are electrically connected with efferent 66 on being installed in control panel 13.Efferent 66 has storage part 67, and this storage part 67 stores master mode, position, speed, the acceleration-deceleration of the car 3 when this master mode comprises normal operation and the information that stops floor etc.Be imported into efferent 66 from the speed detection signal of car speed sensor 31 and from the cage position signal of car position sensor 65.

Efferent 66 is connected with emergency braking device 33 with wiring 17 through promptly stopping.At efferent 66, comparing based on the speed of the car 3 of speed detection signal and cage position signal and position (measured value) and speed and position (setting value) based on the car 3 that is stored in the master mode in the storage part 67.When the deviation of measured value and setting value surpassed defined threshold, efferent 66 outputed to emergency braking device 33 to cranking signal.Here, defined threshold be meant be used to car 3 is stopped through normal brake application and not with the MIN measured value of the end of hoistway 1 collision and the deviation of setting value.Other structures are identical with embodiment 2.

In this lift appliance; Because when from the deviation of the setting value of the measured value of car speed sensor 31 and car position sensor 65 and master mode during above defined threshold; Efferent 66 is exported cranking signals, thereby can prevent the end collision of car 3 and hoistway 1.

Embodiment 6

Figure 11 is the constructional drawing of schematically illustrated 6 lift appliance according to the embodiment of the present invention.In the drawings, in hoistway 1, dispose: going up car 71, is the 1st car; And following car 72, be the 2nd car that is positioned at the below of car 71.Last car 71 is guided by car guide rail 2 with following car 72, in hoistway 1, goes up and down.Upper end in hoistway 1 is provided with: the 1st towing machine (not illustrating) makes car 71 and last car go up and down with counterweight (not illustrating); And the 2nd towing machine (not illustrating), car 72 and following car are gone up and down with counterweight (not illustrating).On the driving rope sheave of the 1st towing machine, be wound with the 1st main rope (not illustrating), on the driving rope sheave of the 2nd towing machine, be wound with the 2nd main rope (not illustrating).Last car 71 with last car with counterweight by the 1st main rope hanging, following car 72 and following car with counterweight by the 2nd main rope hanging.

In hoistway 1, be provided with car speed sensor 73 and following car speed sensor 74, car speed sensor 73 and following car speed sensor 74 are car speed detecting units that the speed to the speed of last car 71 and following car 72 detects this on.And; In hoistway 1, be provided with car position sensor 75 and following car position sensor 76, car position sensor 75 and following car position sensor 76 are car position detecting units that the position of the position of last car 71 and following car 72 is detected this on.

In addition, the car motion detection unit has: go up car speed sensor 73, following car speed sensor 74, go up car position sensor 75 and following car position sensor 76.

Car is installed with emergency braking device 77 in the bottom of last car 71, car is the brake units that have with emergency braking device 33 same structures that in embodiment 2, use with emergency braking device 77 on this.Car is with emergency braking device 78 under the bottom of car 72 is equipped with down, and this time car is to have and the brake unit of last car with emergency braking device 77 same structures with emergency braking device 78.

Efferent 79 is installed in control panel 13.Last car speed sensor 73, down car speed sensor 74, go up car position sensor 75 and down car position sensor 76 be electrically connected with efferent 79.And battery 12 is connected with efferent 79 through feed cable 14.From the last car speed detection signal of last car speed sensor 73, from the following car speed detection signal of car speed sensor 74 down, be imported into efferent 79 from the last car position detection signal of last car position sensor 75 and from the following car position detection signal that descends car position sensor 76.That is, the information from the car motion detection unit is imported into efferent 79.

Efferent 79 is connected with emergency braking device 78 with following car with emergency braking device 77 with last car with wiring 17 through promptly stopping.And; Efferent 79 is according to the information from the car motion detection unit; End to last car 71 or time car 72 and hoistway 1 has collisionless and last car 71 and following car 72 to have collisionless to predict; When doping when collision, cranking signal output to car with emergency braking device 77 and following car with emergency braking device 78.Last car starts according to the input of cranking signal with emergency braking device 78 with emergency braking device 77 and following car.

In addition, supervision portion has car motion detection unit and efferent 79.The running state of last car 71 and following car 72 is kept watch on by supervision portion.Other structures are identical with embodiment 2.

Below, action is described.At efferent 79, through to the information of efferent 79 input from the car motion detection unit, to last car 71 or down the end of car 72 and hoistway 1 collisionless is arranged and goes up car 71 and following car 72 has collisionless to predict.When the fracture prediction of for example going up the 1st main rope of car 71 according to suspention when efferent 79 goes out to go up car 71 with following car 72 collisions, from efferent 79 with cranking signal output to car with emergency braking device 77 and following car with emergency braking device 78.Like this, car is started with emergency braking device 77 and following car with emergency braking device 78, last car 71 is braked with following car 72.

In this lift appliance, because supervision portion has: the car motion detection unit, detect with following car 72 actual act separately car 71 in same hoistway 1, going up and down; And efferent 79; Information according to from the car motion detection unit has collisionless to predict last car 71 with following car 72; When doping when collision, cranking signal output to car with emergency braking device 77 and following car with emergency braking device 78, thereby; Even last car 71 does not reach the speed set with following car 72 speed separately; When doping car 71 and 72 collisions of following car, car is started with emergency braking device 78 with emergency braking device 77 and following car, can avoid car 71 and following car 72 to collide.

And; Since the car motion detection unit have last car speed sensor 73, down car speed sensor 74, go up car position sensor 75 and time car position sensor 76; Thereby, can adopt simple structure easily to detect car 71 and following car 72 actual act separately.

In addition, in above-mentioned example, efferent 79 is installed in the control panel 13, yet also can be installed in efferent 79 respectively on car 71 and the following car 72.In the case; Shown in figure 12, last car speed sensor 73, down car speed sensor 74, go up car position sensor 75 and down car position sensor 76 and be installed in car 71 on efferent 79 and efferent 79 both sides that are installed in down on the car 72 be electrically connected respectively.

And; In above-mentioned example; Efferent 79 cranking signal output to car with emergency braking device 77 and following car with emergency braking device 78 both sides; Yet also can be according to information from the car motion detection unit, cranking signal only output to car with emergency braking device 77 and following car with one in the emergency braking device 78.In the case,, there is collisionless to predict, and last car 71 and the action separately of following car 72 had no abnormally judges last car 71 and following car 72 at efferent 79.Cranking signal is only outputed to the emergency braking device on the side who carries out anomalous behavior who is installed in car 71 and the following car 72 from efferent 79.

Embodiment 7

Figure 13 is the constructional drawing of schematically illustrated 7 lift appliance according to the embodiment of the present invention.In the drawings, car is equipped with following car as efferent with efferent 82 with efferent 81 on following car 72 on being equipped with as efferent on the last car 71.Last car speed sensor 73, go up car position sensor 75 and down car position sensor 76 be electrically connected with efferent 81 with last car.Following car speed sensor 74, car position sensor 76 and go up car position sensor 75 and be electrically connected with efferent 82 down with following car.

Last car promptly stops to be electrically connected with emergency braking device 77 with last car with wiring 83 through last car with efferent 81, and car promptly stops the delivery unit that usefulness wiring 83 is arranged on the car 71 on this.And; Last car with efferent 81 according to from last car speed sensor 73, go up car position sensor 75 and separately information of car position sensor 76 (following in this embodiment, be called " go up car and use detection information ") down; There is collisionless to predict last car 71 with following car 72; When doping collision, output to car to cranking signal with emergency braking device 77.And when having imported last car with detection information, the maximum speed car 71 sides operation up when last car supposes that with efferent 81 car 72 is with normal operation down has collisionless to predict last car 71 with following car 72.

Following car promptly stops to be electrically connected with emergency braking device 78 with following car with wiring 84 through following car with efferent 82, and this time car promptly stops to use 84 delivery units that are arranged on down on the car 72 that connect up.And; Following car with efferent 82 according to respectively from following car speed sensor 74, car position sensor 76 and the information (following in this embodiment, be called " following car is used detection information ") that goes up car position sensor 75 down; To car 72 and last car 71 have collisionless to predict down; When doping collision, output to down car to cranking signal with emergency braking device 78.And when having imported time car with detection information, the maximum speed car 72 sides operation down when following car is gone up car 71 with normal operation with efferent 82 supposition is to car 72 and last car 71 have collisionless to predict down.

Usually, inoperative with emergency braking device 78 with emergency braking device 77 and following car in order to make car, last car 71 and following car 72 are spaced from each other the control of turning round of abundant interval.Other structures are identical with embodiment 6.

Below, action is described.For example when since in the suspention fracture of the 1st main rope of car 71 make car 71 down car 72 sides fall; When 71 approaching times cars 72 of last car; Last car dopes the collision of car 71 and following car 72 with efferent 81, and following car dopes the collision of car 71 and following car 72 with efferent 82.Like this, cranking signal is outputed to car with emergency braking device 77 from last car with efferent 81, and cranking signal is outputed to down car with emergency braking device 78 from following car with efferent 82.Like this, car is started with emergency braking device 77 and following car with emergency braking device 78, last car 71 is braked with following car 72.

In this lift appliance; Owing to not only obtain the effect identical with embodiment 6; And because last car speed sensor 73 only is electrically connected with efferent 81 with last car, and following car speed sensor 74 only is electrically connected with efferent 82 with following car, thereby; Need be between last car speed sensor 73 and following car be with efferent 82 and between car speed sensor 74 and last car down are with efferent 81, electric wiring is set, can simplify the operation that is provided with of electric wiring.

Embodiment 8

Figure 14 is the constructional drawing of schematically illustrated 8 lift appliance according to the embodiment of the present invention.In the drawings, inter-car distance is installed from sensor 91 on last car 71 and following car 72, this inter-car distance is that the inter-car distance that the distance between last car 71 and the following car 72 detects is left detecting unit from sensor 91.Inter-car distance has from sensor 91: laser irradiating part is installed on the car 71; And reflecting part, be installed in down on the car 72.Distance between last car 71 and the following car 72 is obtained according to the reciprocal time of the laser between laser irradiating part and the reflecting part from sensor 91 by inter-car distance.

Last car speed sensor 73, down car speed sensor 74, go up car position sensor 75 and inter-car distance is electrically connected with efferent 81 with last car from sensor 91.Last car speed sensor 73, down car speed sensor 74, car position sensor 76 and inter-car distance are electrically connected with efferent 82 with following car from sensor 91 down.

Last car with efferent 81 according to respectively from last car speed sensor 73, down car speed sensor 74, go up car position sensor 75 and inter-car distance from the information of sensor 91 (following in this embodiment, be called " go up car and use detection information "); There is collisionless to predict last car 71 with following car 72; When doping collision, output to car to cranking signal with emergency braking device 77.

Following car with efferent 82 according to respectively from last car speed sensor 73, down car speed sensor 74, car position sensor 76 and inter-car distance be from the information of sensor 91 (following in this embodiment, be called " following car is used detection information ") down; To car 72 and last car 71 have collisionless to predict down; When doping collision, output to down car to cranking signal with emergency braking device 78.Other structures are identical with embodiment 7.

In this lift appliance,, thereby can predict more reliably that car 71 and following car 72 have collisionless because efferent 79 has collisionless to predict last car 71 with following car 72 according to the information that leaves sensor 91 from inter-car distance.

In addition; Can open and close sensor 58 to the door of embodiment 3 and be applied to lift appliance according to above-mentioned embodiment 6～8; Be input to efferent opening and closing detection signal; Also can detect lead 61 to the fracture of embodiment 4 and be applied to lift appliance, be input to efferent to the rope break signal according to above-mentioned embodiment 6～8.

And in above-mentioned embodiment 2～8, drive division utilizes the electromagnetic repulsive force or the electromagnetic attraction of the 1st electromagnetic portion 49 and the 2nd electromagnetic portion 50 to drive, yet also can utilize the vortex flow that for example in electric conductivity repels plate, produces to drive.In the case, shown in figure 15, be supplied to electromagnet 48 as the pulse current of cranking signal, be utilized in the vortex flows that produce in the repulsion plate fixing on the movable part 40 51 and from the mutual action in the magnetic field of electromagnet 48, movable part 40 moves.

And in above-mentioned embodiment 2～8, the car speed detecting unit is arranged in the hoistway 1, yet also can be installed on the car.In the case, the speed detection signal from the car speed detecting unit is sent to efferent through control cable.

Embodiment 9

Figure 16 is the plane cross sectional drawing that 9 emergency braking device is shown according to the embodiment of the present invention.In the drawings, emergency braking device 155 has: wedge 34; Actuation part 156 is connected with the bottom of wedge 34; And guide part 36, be configured in the top of wedge 34, be fixed on the car 3.Actuation part 156 can be with wedge 34 with respect to guide part 36 up-and-down movements.

Actuation part 156 has: a pair of contact part 157 can contact with car guide rail 2 and separate; A pair of chain member 158a, 158b are connected respectively with each contact part 157; Starting mechanism 159 makes a chain member 158a move with the direction of separating with car guide rail 2 contacts towards each contact part 157 with respect to another chain member 158b; And support portion 160, support each contact part 157, each chain member 158a, 158b and starting mechanism 159.Be fixed with the horizontal shaft 170 that in wedge 34, runs through insertion on the support portion 160.Wedge 34 can move back and forth with respect to horizontal shaft 170 in the horizontal direction.

Each chain member 158a, 158b are intersecting to the part the other end from an end each other.And support portion 160 is provided with transom 161, and this transom 161 can make each chain member 158a, 158b rotate in each chain member 158a, the cross one another part of 158b.And it can be that rotate at the center with connecting portion 161 with respect to another chain member 158b that a chain member 158a is arranged to.

Move towards mutual approaching direction each the other end through making chain member 158a, 158b, and each contact part 157 court respectively moves with the direction that car guide rail 2 contacts.And, moving towards the direction that is separated from each other through each the other end that makes chain member 158a, 158b, each contact part 157 court respectively moves with the direction that car guide rail 2 separates.

Starting mechanism 159 is configured between each the other end of chain member 158a, 158b.And starting mechanism 159 is supported by each chain member 158a, 158b.And starting mechanism 159 has: bar-shaped movable part 162 is connected with a chain member 158a; And drive division 163, be fixed on another chain member 158b, movable part 162 is moved back and forth.Starting mechanism 159 can be that rotate at the center with transom 161 with each chain member 158a, 158b.

Movable part 162 has: movable core 164 is housed in the drive division 163; And pitman 165, movable core 164 is interconnected with chain member 158a.And movable part 162 can move back and forth between the contact position of each contact part 157 and car guide rail 2 contacts and each contact part 157 and disengaged position that car guide rail 2 separates.

Drive division 163 has: fixed iron core 166, comprise a pair of restrictions 166a that moves of restriction movable core 164,166b and with each restrictions 166a, the interconnective side wall portion 166c of 166b, and around movable core 164; The 1st coil 167 is housed in the fixed iron core 166, through energising movable core 164 courts is moved with the direction that a restrictions 166a contacts; The 2nd coil 168 is housed in the fixed iron core 166, through energising movable core 164 courts is moved with the direction that another restrictions 166b contacts; And annular permanent magnnet 169, be configured between the 1st coil 167 and the 2nd coil 168.

A restrictions 166a is configured to, when movable part 162 during at disengaged position and movable core 164 butts.And another restrictions 166b is configured to, when movable part 162 during at contact position and movable core 164 butts.

The 1st coil 167 and the 2nd coil 168 are the ring-type magnet coils that surround movable part 162.And the 1st coil 167 is configured between permanent magnet 169 and the restrictions 166a, and the 2nd coil 168 is configured between permanent magnet 169 and another restrictions 166b.

Under the state of a movable core 164 and a restrictions 166a butt; Because becoming magneto-resistive space is present between movable core 164 and another restrictions 166b; Thereby the magnetic flow of permanent magnet 169 is more than the 2nd coil 168 sides in the 1st coil 167 sides, movable core 164 with the state of a restrictions 166a butt under be held.

And; Under the state of movable core 164 and another restrictions 166b butt; Because becoming magneto-resistive space is present between movable core 164 and the restrictions 166a; Thereby the magnetic flow of permanent magnet 169 is more than the 1st coil 167 sides in the 2nd coil 168 sides, movable core 164 with the state of another restrictions 166b butt under be held.

Electric power as from the cranking signal of efferent 32 is imported into the 2nd coil 168.And the 2nd coil 168 is because the input of cranking signal produces the magnetic flux that overcomes the power that keeps a movable core 164 and a restrictions 166a butt.And, be imported into the 1st coil 167 as electric power from the restoring signal of efferent 32.And the 1st coil 167 is because the input of restoring signal produces the magnetic flux that overcomes the power that keeps movable core 164 and another restrictions 166b butt.

Other structures are identical with embodiment 2.

Below, action is described.When normal operation, movable part 162 is positioned at disengaged position, and movable core 164 utilizes confining force and restrictions 166a butt of permanent magnet 169.Under the state of a movable core 164 and a restrictions 166a butt, wedge 34 keeps the interval with guide part 36, separates with car guide rail 2.

Afterwards, the same with embodiment 2, through outputing to each emergency braking device 155 to cranking signal from efferent 32, to 168 energisings of the 2nd coil.Like this, around the 2nd coil 168, produce magnetic flux, movable core 164 courts move with the approaching direction of another restrictions 166b, move to contact position from disengaged position.At this moment, each contact part 157 moves towards mutual approaching direction, contacts with car guide rail 2.Like this, wedge 34 and actuation part 155 are braked.

Afterwards, guide part 36 continues to descend, and is approaching with wedge 34 and actuation part 155.Like this, wedge 34 44 is directed along the dip plane, and car guide rail 2 is clamped by wedge 34 and contact surface 45.Afterwards, with embodiment 2 the same actions, car 3 is braked.

When recovering, restoring signal is sent to the 1st coil 167 from efferent 32.Like this, around the 1st coil 167, produce magnetic flux, movable core 164 moves to disengaged position from contact position.Afterwards, the same with embodiment 2, wedge 34 is disengaged with pushing of 45 pairs of car guide rails 2 of contact surface.

In this lift appliance; Because starting mechanism 159 moves a pair of contact part 157 through each chain member 158a, 158b; Thereby, not only obtain the effect identical, and can reduce the quantity that is used to make the starting mechanism 159 that a pair of contact part 157 moves with embodiment 2.

Embodiment 10

Figure 17 is the partial cross sectional side elevation view that 10 emergency braking device is shown according to the embodiment of the present invention.In the drawings, emergency braking device 175 has: wedge 34; Actuation part 176 is connected with the bottom of wedge 34; And guide part 36, be configured in the top of wedge 34, be fixed on the car 3.

Actuation part 176 has: starting mechanism 159 has the structure identical with embodiment 9; And chain member 177, the moving of the movable part 162 through starting mechanism 159.

Starting mechanism 159 is fixed on the bottom of car 3, and movable part 162 is moved back and forth towards horizontal direction with respect to car 3.Chain member 177 is arranged on the anchor shaft 180 of the bottom of being fixed in car 3 rotationally.Anchor shaft 180 is configured in the below of starting mechanism 159.

Chain member 177 have with anchor shaft 180 be starting point respectively towards the 1st chain portion 178 and the 2nd chain portion 179 that different directions extends, as the global shape of chain member 177, be ヘ word shape roughly.That is, the 2nd chain portion 179 is fixed in the 1st chain portion 178, and the 1st chain portion 178 and the 2nd chain portion 179 can be the center unitary rotation with anchor shaft 180.

The length of the 1st chain portion 178 is longer than the length of the 2nd chain portion 179.And, be provided with slotted hole 182 at the terminal part of the 1st chain portion 178.Be fixed with the sliding pin 183 that passes through slotted hole 182 slidably in the bottom of wedge 34.That is, wedge 34 is connected with the terminal part of the 1st chain portion 178 slidably.The terminal part of movable part 162 is connected with the terminal part of the 2nd chain portion 179 through connecting pin 181 rotationally.

Chain member 177 can make wedge 34 at the disengaged position that separates below the guide part 36 and make that wedge 34 is engaging-in to move back and forth between the actuated position between car guide rail and the guide part 36.When chain member 177 during at disengaged position, movable part 162 is outstanding from drive division 163, and when chain member 177 during in the starting position, movable part 162 is retreated towards drive division 163.

Below, action is described.When normal operation, chain member 177 is retreated towards drive division 163 and is positioned at disengaged position owing to movable part 162.At this moment, wedge 34 keeps the interval with guide part 36, separates with car guide rail.

Afterwards, the same with embodiment 2, cranking signal is outputed to each emergency braking device 175 from efferent 32, and movable part 162 is advanced.Like this, chain member 177 is that rotate at the center with anchor shaft 180, moves towards the starting position.Like this, wedge 34 contacts with car guide rail with guide part 36, and is engaging-in between guide part 36 and car guide rail.Like this, car 3 is braked.

When recovering, restoring signal is sent to emergency braking device 175 from efferent 32, the movable part 162 direction application of force that moved backward.Under this state, car 3 is risen, with wedge 34 towards the engaging-in releasing between guide part 36 and the car guide rail.

In this lift appliance, also can obtain the effect identical with embodiment 2.

Embodiment 11

Figure 18 is the constructional drawing of schematically illustrated 11 lift appliance according to the embodiment of the present invention.In the drawings, be provided with at hoistway 1 internal upper part: towing machine 101 is actuating devices; And control panel 102, be electrically connected the running of control elevator with towing machine 101.Towing machine 101 has: actuating device main body 103, and it comprises electrical motor; And drive rope sheave 104, be wound with many main ropes 4, by 103 rotations of actuating device main body.Towing machine 101 is provided with: deflector sheave 105 is wound with each main rope 4; And towing machine is brake units of the rotation that drives rope sheave 104 being braked for car 3 is slowed down with brake equipment (slow down and use brake equipment) 106.Car 3 is suspended in the hoistway 1 through each main rope with counterweight 107.Car 3 goes up and down in hoistway 1 through the driving of towing machine 101 with counterweight 107.

Emergency braking device 33, towing machine are electrically connected with monitor unit 108 with brake equipment 106 and control panel 102, and this monitor unit 108 is always at the state of keeping watch on elevator.Car position sensor 109, car speed sensor 110 and car acceleration pick-up 111 are electrically connected with monitor unit 108 respectively; This car position sensor 109 is car position test sections that the position of car 3 is detected; This car speed sensor 110 is car speed test sections that the speed to car 3 detects, and this car acceleration pick-up 111 is car acceleration detecting section that the acceleration/accel to car 3 detects.Car position sensor 109, car speed sensor 110 and car acceleration pick-up 111 are arranged in the hoistway 1.

In addition, the detecting unit 112 that the elevator state is detected has: car position sensor 109, car speed sensor 110 and car acceleration pick-up 111.And, as car position sensor 109, can enumerate with lower component etc.: coder, through the rotation amount that moves the swivel that rotates of following car 3 is carried out the position that instrumentation detects car 3; Linear encoder is through measuring the position that straight-line amount of movement detects car 3; Perhaps optical displacement analyzer has and for example is arranged on light projector and the light-receiving device in the hoistway 1 and is arranged on the interior reflecting plate of car 3, through to receive light institute spended time to measure the position of detecting car 3 from the light projector light projector to light-receiving device.

Monitor unit 108 has: storage part 113 stores in advance to become and is used for judging that elevator has multiple (this example is 2 kinds) unusual judgment standard (setting data) of N/R benchmark; And efferent (operational part) 114, detecting elevator according to detecting unit 112 and storage part 113 information separately has no abnormal.In this example, contain at storage part 113 internal memories: the unusual judgment standard of car speed is the unusual judgment standard to the speed of car 3; And the unusual judgment standard of car acceleration/accel, be unusual judgment standard to the acceleration/accel of car 3.

Figure 19 is the diagram of curves that the unusual judgment standard of car speed in the storage part 113 that is stored in Figure 18 is shown.In the drawings, the up-down of the car 3 in hoistway 1 is provided with in interval (interval between end layer and the other end layer): acceleration and deceleration are interval, make car 3 near one and another end layer, carry out acceleration and deceleration; And constant speed is interval, and car 3 is moved with constant speed between each acceleration and deceleration interval.

In the unusual judgment standard of car speed, correspondingly with the position of car 3 be set with 3 grades of detecting patterns.That is, in the unusual judgment standard of car speed, the position with car 3 is set with accordingly respectively: normal speed detecting pattern (normal level) 115, the speed of the car 3 when being normal operation; The 1st abnormal speed detecting pattern (the 1st unusual rank) 116 has the value bigger than normal speed detecting pattern 115; And the 2nd abnormal speed detecting pattern (the 2nd unusual rank) 117, have the value bigger than the 1st abnormal speed detecting pattern 116.

Normal speed detecting pattern the 115, the 1st abnormal speed detecting pattern 116 and the 2nd abnormal speed detecting pattern 117 are set for respectively in the constant speed interval and are become steady state value, and reduce continuously to the end layer in the acceleration and deceleration interval.And the difference poor and the 2nd abnormal speed detecting pattern 117 and the 1st abnormal speed detecting pattern 116 of the 1st abnormal speed detecting pattern 116 and normal speed detecting pattern 115 is not set at all the interval position constants that go up and down.

Figure 20 is the diagram of curves that the unusual judgment standard of car acceleration/accel in the storage part 113 that is stored in Figure 18 is shown.In the drawings, in the unusual judgment standard of car acceleration/accel, be set with 3 grades of detecting patterns accordingly with the position of car 3.That is, in the unusual judgment standard of car acceleration/accel, the position with car 3 is set with accordingly respectively: normal acceleration detecting pattern (normal level) 118, the acceleration/accel of the car 3 when being normal operation; The 1st unusual acceleration detection pattern (the 1st unusual rank) 119 has the value bigger than normal acceleration detecting pattern 118; And the 2nd unusual acceleration detection pattern (the 2nd unusual rank) 120, have the value bigger than the 1st unusual acceleration detection pattern 119.

Normal acceleration detecting pattern the 118, the 1st unusual acceleration detection pattern 119 and the 2nd unusual acceleration detection pattern 120 are set for respectively in that constant speed is interval and are null value, in an acceleration and deceleration interval be on the occasion of, be negative value in another acceleration and deceleration interval.And the difference poor and the 2nd unusual acceleration detection pattern 120 and the 1st unusual acceleration detection pattern 119 of the 1st unusual acceleration detection pattern 119 and normal acceleration detecting pattern 118 is not set at all the interval position constants that go up and down.

Promptly; In storage part 113; Store normal speed detecting pattern the 115, the 1st abnormal speed detecting pattern 116 and the 2nd abnormal speed detecting pattern 117 as the unusual judgment standard of car speed, store normal acceleration detecting pattern the 118, the 1st unusual acceleration detection pattern 119 and the 2nd unusual acceleration detection pattern 120 as the unusual judgment standard of car acceleration/accel.

Emergency braking device 33, control panel 102, towing machine are electrically connected with efferent 114 respectively with brake equipment 106, detecting unit 112 and storage part 113.And, from the position detection signal of car position sensor 109, be input to efferent 114 constantly respectively from the speed detection signal of car speed sensor 110 and from the acceleration detection signal of car acceleration pick-up 111.At efferent 114; Calculate the position of car 3 according to the input of position detection signal; And, calculate the speed of car 3 and the acceleration/accel of car 3 respectively and judge key element unusually as multiple (in this example being two kinds) according to speed detection signal and the input separately of acceleration detection signal.

When the speed of car 3 surpassed the 1st abnormal speed detecting pattern 116, perhaps when the acceleration/accel of car 3 during above the 1st unusual acceleration detection pattern 119, efferent 114 outputed to towing machine to cranking signal (energizing signal) with brake equipment 106.And, efferent 114 output to cranking signal towing machine with brake equipment 106 in, output to control panel 102 to the danger signal that is used to stop to drive towing machine 101.And when the speed of car 3 surpassed the 2nd abnormal speed detecting pattern 117, perhaps when the acceleration/accel of car 3 surpassed the 2nd unusual acceleration detection pattern 120, efferent 114 outputed to towing machine to cranking signal with brake equipment 106 and emergency braking device 33.That is, efferent 114 is according to the speed of car 3 and the intensity of anomaly of acceleration/accel, and the brake unit of cranking signal is exported in decision.

Other structures are identical with embodiment 2.

Below, action is described.When from the position detection signal of car position sensor 109, when being imported into efferent 114 from the speed detection signal of car speed sensor 110 and from the acceleration detection signal of car acceleration pick-up 111; At efferent 114; According to the input of each detection signal, calculate position, speed and the acceleration/accel of car 3.Afterwards; At efferent 114; Compare the unusual judgment standard of the car speed that obtains respectively from storage part 113 and the unusual judgment standard of car acceleration/accel speed and acceleration/accel, the speed and the acceleration/accel of car 3 each had no abnormal the detection with the car 3 of calculating according to the input of each detection signal.

When normal operation; Because the speed of car 3 has the value roughly the same with the normal speed detecting pattern; And the acceleration/accel of car 3 has the value roughly the same with the normal acceleration detecting pattern; Thereby at efferent 114, the speed and the acceleration/accel that detect car 3 are not unusual separately, continue the normal operation of elevator.

In the velocity anomaly rising that for example makes car 3 for a certain reason and above under the situation of the 1st abnormal speed detecting pattern 116; The speed that detects car 3 at efferent 114 has unusually; Cranking signal is outputed to towing machine with brake equipment 106 from efferent 114, and danger signal is outputed to control panel 102 from efferent 114.Like this, towing machine 101 is stopped, and make towing machine, the rotation that drives rope sheave 104 is braked with brake equipment 106 startings.

And; Surpass under the situation of the 1st unusual acceleration/accel setting value 119 in the acceleration/accel abnormal ascending of car 3; Cranking signal and danger signal are outputed to towing machine respectively with brake equipment 106 and control panel 102 from efferent 114, and the rotation that drives rope sheave 104 is braked.

After towing machine is with brake equipment 106 startings; In the further rising of the speed of car 3 and above under the situation of the 2nd abnormal speed setting value 117; Output to cranking signal under the state of towing machine with brake equipment 106 keeping, cranking signal is outputed to emergency braking device 33 from efferent 114.Like this, make emergency braking device 33 startings, through car 3 being braked with embodiment 2 identical actions.

And; After towing machine is with brake equipment 106 startings; In the further rising of the acceleration/accel of car 3 and above under the situation of the 2nd unusual acceleration/accel setting value 120; Output to cranking signal under the state of towing machine with brake equipment 106 keeping, output to emergency braking device 33 to cranking signal from efferent 114, make emergency braking device 33 startings.

In this lift appliance; Because monitor unit 108 is obtained the speed of car 3 and the acceleration/accel of car 3 according to the information from the detecting unit that the elevator state is detected 112; When any side in the acceleration/accel of the speed of judging the car of being obtained 3 and car 3 is unusual; Output to towing machine to cranking signal with any at least side in brake equipment 106 and the emergency braking device 33; Thereby the detection that can make 108 pairs of abnormal elevators of monitor unit more early and more reliable can further be shortened from abnormal elevator taking place to producing the time required to the braking force of car 3.Promptly; Because the speed of car 3 and the so multiple unusual judgement key element of acceleration/accel of car 3 have no abnormal by monitor unit 108 judgement separately respectively; Thereby; The detection that can make 108 pairs of abnormal elevators of monitor unit more early and more reliable can be shortened from abnormal elevator taking place to producing the time required to the braking force of car 3.

And; Because monitor unit 108 has storage part 113; This storage part 113 stores and is used to judge that the speed of car 3 has the unusual judgment standard of N/R car speed and is used to judge that the acceleration/accel of car 3 has the unusual judgment standard of N/R car acceleration/accel; Thereby the speed and the acceleration/accel that can easily change car 3 each have N/R judgment standard, can easily tackle the design modification of elevator etc.

And, owing in the unusual judgment standard of car speed, be set with: normal speed detecting pattern 115; The 1st abnormal speed detecting pattern 116 has the value bigger than normal speed detecting pattern 115; And the 2nd abnormal speed detecting pattern 117; Have the value bigger than the 1st abnormal speed detecting pattern 116; When the speed of car 3 surpasses the 1st abnormal speed detecting pattern 116; Cranking signal is outputed to towing machine with brake equipment 106 from monitor unit 108, and when the speed of car 3 surpassed the 2nd abnormal speed detecting pattern 117, cranking signal was outputed to towing machine with brake equipment 106 and emergency braking device 33 from monitor unit 108; Thereby, can carry out the stage braking to car 3 according to the velocity anomaly size of car 3.Therefore, can reduce the frequency that applies large impact to car 3, and car 3 is stopped more reliably.

And, owing in the unusual judgment standard of car acceleration/accel, be set with: normal acceleration detecting pattern 118; The 1st unusual acceleration detection pattern 119 has the value bigger than normal acceleration detecting pattern 118; And the 2nd unusual acceleration detection pattern 120; Have the value bigger than the 1st unusual acceleration detection pattern 119; When the acceleration/accel of car 3 surpasses the 1st unusual acceleration detection pattern 119; Cranking signal is outputed to towing machine with brake equipment 106 from monitor unit 108, and when the acceleration/accel of car 3 surpassed the 2nd unusual acceleration detection pattern 120, cranking signal was outputed to towing machine with brake equipment 106 and emergency braking device 33 from monitor unit 108 quilts; Thereby, can carry out the stage braking to car 3 according to the unusual size of the acceleration/accel of car 3.Usually, because before the speed of car 3 took place unusually, the acceleration/accel of car 3 took place unusual, thereby can further reduce the frequency that applies large impact to car 3, and car 3 is stopped more reliably.

And; Owing to be set with normal speed detecting pattern the 115, the 1st abnormal speed detecting pattern 116 and the 2nd abnormal speed detecting pattern 117 accordingly with the position of car 3; Thereby, can set the 1st abnormal speed detecting pattern 116 and the 2nd abnormal speed detecting pattern 117 accordingly respectively at the up-down of car 3 interval all positions and normal speed detecting pattern 115.Therefore; Because particularly in the acceleration and deceleration interval, the value of normal speed detecting pattern 115 is little, thereby; Can set the 1st abnormal speed detecting pattern 116 and the 2nd abnormal speed detecting pattern 117 for smaller value respectively, can reduce the impact that causes by braking car 3.

In addition; In above-mentioned example, obtain the speed of car 3 for making monitor unit 108, used car speed sensor 110; Yet also can not use car speed sensor 110, and according to the speed that derives car 3 by the position of car position sensor 109 detected cars 3.That is, also can obtain the speed of car 3 through to differentiating according to the position of the car 3 of calculating from the position detection signal of car position sensor 109.

And; In above-mentioned example, obtain the acceleration/accel of car 3 for making monitor unit 108, used car acceleration pick-up 111; Yet also can not use car acceleration pick-up 111, and according to the acceleration/accel of deriving car 3 by the position of car position sensor 109 detected cars 3.That is, also can obtain the acceleration/accel of car 3 through to asking second differential according to the position of the car 3 of calculating from the position detection signal of car position sensor 109.

And; In above-mentioned example; Efferent 114 according to the speed of the car 3 of judging key element unusually and the intensity of anomaly of acceleration/accel as each, and the brake unit of cranking signal is exported in decision, yet can be predetermined the brake unit of output cranking signal to each unusual judgement key element.

Embodiment 12

Figure 21 is the constructional drawing of schematically illustrated 12 lift appliance according to the embodiment of the present invention.In the drawings, the stop at each floor is provided with a plurality of hall call buttons 125.And, in car 3, be provided with a plurality of destination floor buttons 126.And monitor unit 127 has efferent 114.The unusual judgment standard generating apparatus 128 that generates unusual judgment standard of car speed and the unusual judgment standard of car acceleration/accel is electrically connected with efferent 114.Unusual judgment standard generating apparatus 128 is electrically connected with each destination floor button 126 with each hall call buttons 125 respectively.Position detection signal is imported into unusual judgment standard generating apparatus 128 from car position sensor 109 through efferent 114.

Unusual judgment standard generating apparatus 128 has: storage part 129 (memory section), and the storage conduct is about a plurality of car speed unusual judgment standard and a plurality of car acceleration/accels unusual judgment standard of car 3 at the unusual judgment standard of all situations of each floor gap up-down; And generation portion 130, from storage part 129, select each one of unusual judgment standard of car speed and the unusual judgment standard of car acceleration/accel, output to efferent 114 to unusual judgment standard of selected car speed and the unusual judgment standard of car acceleration/accel.

In the unusual judgment standard of each car speed, be set with the 3 grade detecting patterns identical accordingly with the unusual judgment standard of car speed shown in Figure 19 of embodiment 11 with the position of car 3.And, in the unusual judgment standard of each car acceleration/accel, be set with the 3 grade detecting patterns identical accordingly with the unusual judgment standard of car acceleration/accel shown in Figure 20 of embodiment 11 with the position of car 3.

Generation portion 130 is according to the detection position of calculating car 3 from the information of car position sensor 109, according to the destination of calculating car 3 from any at least side's in each hall call buttons 125 and the destination floor button 126 information.And, generation portion 130 select with the detection position of being calculated and destination as one with respectively one of the unusual judgment standard of car speed of another end layer and the unusual judgment standard of car acceleration/accel.

Other structures are identical with embodiment 11.

Below, action is described.Position detection signal is input to generation portion 130 from car position sensor 109 through efferent 114 always.When wait any side who selects in each hall call buttons 125 and the destination floor button 126 by for example passenger; And with calling signal when selected button is input to generation portion 130; In generation portion 130; Calculate the detection position and the destination of car 3 according to the input of position detection signal and calling signal, select respectively one of unusual judgment standard of car speed and the unusual judgment standard of car acceleration/accel.Afterwards, from generation portion 130 unusual judgment standard of selected car speed and the unusual judgment standard of car acceleration/accel are outputed to efferent 114.

At efferent 114, the same with embodiment 11, the speed and the acceleration/accel of car 3 each had no abnormal the detection.Action afterwards is identical with embodiment 9.

In this lift appliance; Because unusual judgment standard generating apparatus generates unusual judgment standard of car speed and the unusual judgment standard of car acceleration/accel according to the information from any at least side in hall call buttons 125 and the destination floor button 126; Thereby; Can generate and unusual judgment standard of the cooresponding car speed of destination and the unusual judgment standard of car acceleration/accel; Even under the situation of having selected the different target floor, also can shorten from elevator and take place when unusual to producing the required time of braking force.

In addition; In above-mentioned example; Select respectively one of unusual judgment standard of car speed and the unusual judgment standard of car acceleration/accel the unusual judgment standard of a plurality of car speed and the unusual judgment standard of a plurality of car acceleration/accels of generation portion 130 in being stored in storage part 129; Yet also can directly generate abnormal speed detecting pattern and unusual acceleration detection pattern respectively according to the normal speed mode and the normal acceleration pattern of the car 3 that generates by control panel 102.

Embodiment 13

Figure 22 is the constructional drawing of schematically illustrated 13 lift appliance according to the embodiment of the present invention.In this example, each main rope 4 is connected with the top of car 3 through rope fastening device 131.Monitor unit 108 is installed in the top of car 3.Car position sensor 109, car speed sensor 110 and a plurality of rope sensor 132 are electrically connected with efferent 114 respectively; These a plurality of rope sensors 132 are arranged on the rope fastening device 131, are the rope fracture test sections that has crack-free to detect to each main rope 4 respectively.In addition, detecting unit 112 has: car position sensor 109, car speed sensor 110 and rope sensor 132.

When main rope 4 broke, each rope sensor 132 outputed to efferent 114 to the detection signal that breaks respectively.And, contain at storage part 113 internal memories: the car speed unusual judgment standard identical and as the unusual judgment standard of rope of judging that main rope 4 has N/R benchmark with embodiment shown in Figure 19 11.

In the unusual judgment standard of rope, be set with respectively: the 1st unusual rank is at least one state that main rope 4 breaks; And the 2nd unusual rank, be the state that all main ropes 4 break.

At efferent 114; Calculate the position of car 3 according to the input of position detection signal; And, calculate the speed of car 3 and the state of main rope 4 respectively and judge key element unusually as multiple (in this example being two kinds) according to the speed detection signal and the detection signal input separately of breaking.

When the speed of car 3 surpassed the 1st abnormal speed detecting pattern 116 (Figure 19), perhaps when at least one main rope 4 broke, efferent 114 outputed to towing machine to cranking signal (energizing signal) with brake equipment 106.And when the speed of car 3 surpassed the 2nd abnormal speed detecting pattern 117 (Figure 19), perhaps when all main ropes 4 broke, efferent 114 outputed to towing machine to cranking signal with brake equipment 106 and emergency braking device 33.That is, efferent 114 is according to the speed of car 3 and the state intensity of anomaly separately of main rope 4, and the brake unit of cranking signal is exported in decision.

Figure 23 illustrates the rope fastening device 131 of Figure 22 and the constructional drawing of each rope sensor 132.And Figure 24 is the constructional drawing that the state that 1 main rope 4 of Figure 23 breaks is shown.In the drawings, rope fastening device 131 has each main rope 4 and a plurality of rope connecting portions 134 of car 3 bonded assemblys.Each rope connecting portion 134 has the elastomeric spring 133 between main rope 4 and car 3.Car 3 can move through the flexible of each elastomeric spring 133 with respect to the position of each main rope 4.

Rope sensor 132 is arranged on each rope connecting portion 134.Each rope sensor 132 is displacement measuring instruments of measuring the elongation of elastomeric spring 133.Each rope sensor 132 is always outputing to efferent 114 with the cooresponding measured signal of the elongation of elastomeric spring 133.Measured signal when the elongation that is caused by recovery when elastomeric spring 133 reaches specified amount is used as the detection signal that breaks and is input to efferent 114.In addition, can be arranged on the measurement mechanism of the tension force of each main rope 4 of direct mensuration on each rope connecting portion 134 as the rope sensor.

Other structures are identical with embodiment 11.

Below, action is described.When from the position detection signal of car position sensor 109, when being imported into efferent 114 from the speed detection signal of car speed sensor 110 and from the detection signal that breaks of each rope sensor 131; At efferent 114; According to the input of each detection signal, calculate the position of car 3, the speed of car 3 and the radical that breaks of main rope 4.Afterwards; At efferent 114; The unusual judgment standard of the car speed that obtains respectively from storage part 113 and the unusual judgment standard of rope, compare, the speed of car 3 and the state of main rope 4 are each had no abnormal the detection with the speed of the car 3 of calculating and the radical that breaks of main rope 4 according to the input of each detection signal.

When normal operation; Because the speed of car 3 has the value roughly the same with the normal speed detecting pattern, and the radical that breaks of main rope 4 is zero, thereby at efferent 114; Detecting the speed of car 3 and the state of main rope 4 does not have unusually separately, continues the normal operation of elevator.

In the velocity anomaly rising that for example makes car 3 for a certain reason and above under the situation of the 1st abnormal speed detecting pattern 116 (Figure 19); The speed that detects car 3 at efferent 114 has unusually; Cranking signal is outputed to towing machine with brake equipment 106 from efferent 114, and danger signal is outputed to control panel 102 from efferent 114.Like this, towing machine 101 is stopped, and make towing machine, the rotation that drives rope sheave 104 is braked with brake equipment 106 startings.

And under the situation that at least one main rope 4 breaks, cranking signal and danger signal are outputed to towing machine respectively with brake equipment 106 and control panel 102 from efferent 114, and the rotation that drives rope sheave 104 is braked.

After towing machine is with brake equipment 106 startings; In the further rising of the speed of car 3 and above under the situation of the 2nd abnormal speed setting value 117 (Figure 19); Output to cranking signal under the state of towing machine with brake equipment 106 keeping, cranking signal is outputed to emergency braking device 33 from efferent 114.Like this, make emergency braking device 33 startings, through car 3 being braked with embodiment 2 identical actions.

And; After towing machine is with brake equipment 106 starting, under the situation that all main ropes 4 break, also output to cranking signal under the state of towing machine with brake equipment 106 keeping; Output to emergency braking device 33 to cranking signal from efferent 114, make emergency braking device 33 startings.

In this lift appliance; Because monitor unit 108 is obtained the speed of car 3 and the state of main rope 4 according to the information from the detecting unit that the elevator state is detected 112; Any side in the speed of the car of obtaining when being judged as 3 and the state of main rope 4 has when unusual, outputs to towing machine to cranking signal with any at least side in brake equipment 106 and the emergency braking device 33, thereby; The abnormality detection number of objects increases; Not only can detect the velocity anomaly of car 3, and can detect the abnormal state of main rope 4, the abnormality detection that can make 108 pairs of elevators of monitor unit more early and more reliable.Therefore, can further shorten from the elevator generation unusually to producing the time required the braking force of car 3.

In addition, in above-mentioned example, be provided with rope sensor 132 in the rope fastening device 131 on being arranged at car 3, yet also rope sensor 132 can be set in the rope fastening device on being arranged at counterweight 107.

And; In above-mentioned example, the present invention is applied to the lift appliance of following type, that is: an end of main rope 4 is connected with counterweight 107 with car 3 respectively with the other end; Car 3 and counterweight 107 are suspended in the hoistway 1; Yet the present invention also can be applied to the lift appliance of following type, that is: the works bonded assembly master rope 4 in an end and the other end and the hoistway 1 is wound on respectively on car hanging wheel and the counterweight hanging wheel, and car 3 and counterweight 107 are suspended in the hoistway 1.In the case, the rope sensor is arranged in the rope fastening device set on the works in the hoistway 1.

Embodiment 14

Figure 25 is the constructional drawing of schematically illustrated 14 lift appliance according to the embodiment of the present invention.In this example, be the lead that is embedded in each main rope 4 as the rope sensor 135 of rope fracture test section.Each lead extends at the length direction of main rope 4.One end of each lead and the other end are electrically connected with efferent 114 respectively.In each lead, there is weak current to flow through.Be used as the detection signal that breaks to the cut-out of each lead energising separately and be input to efferent 114.

Other structures are identical with embodiment 13 with action.

In this lift appliance; Because the cut-out according to the energising of the lead in being embedded in each main rope 4 detects breaking of each main rope 4; Thereby, can not receive the influence of the tension variation of each main rope 4 that the acceleration and deceleration by car 3 cause, can detect each main rope 4 more reliably has crack-free.

Embodiment 15

Figure 26 is the constructional drawing of schematically illustrated 15 lift appliance according to the embodiment of the present invention.In the drawings, car position sensor 109, car speed sensor 110 and door sensor 140 are electrically connected with efferent 114, and this door sensor 140 is that the gangway that the open and-shut mode to car gangway 26 detects opens and closes test section.In addition, detecting unit 112 has: car position sensor 109, car speed sensor 110 and door sensor 140.

When car gangway 26 is in when closing state, door sensor 140 outputs to efferent 114 closing a detection signal.And, contain at storage part 113 internal memories: car speed unusual judgment standard identical and the gangway abnormal state judgment standard that N/R benchmark is arranged as the open and-shut mode of judging car gangway 26 with embodiment shown in Figure 19 11.Gangway abnormal state judgment standard is to be judged as unusual unusual judgment standard to the state of car 3 up-downs and patent door.

At efferent 114; Calculate the position of car 3 according to the input of position detection signal; And according to speed detection signal with close detection signal input separately, calculate the speed of car 3 and the state of car gangway 26 respectively and judge key element unusually as multiple (in this example being two kinds).

When car under the state of car gangway 26 patent doors 3 went up and down, perhaps when the speed of car 3 surpassed the 1st abnormal speed detecting pattern 116 (Figure 19), efferent 114 outputed to towing machine to cranking signal with brake equipment 106.And when the speed of car 3 surpassed the 2nd abnormal speed detecting pattern 117 (Figure 19), efferent 114 outputed to towing machine to cranking signal with brake equipment 106 and emergency braking device 33.

Figure 27 illustrates the car 3 of Figure 26 and the block diagram of door sensor 140.And Figure 28 is the block diagram that the state of the car gangway 26 of Figure 27 opening is shown.In the drawings, door sensor 140 is configured in the top of car gangway 26, and the frontal of relative car 3 is configured in the central authorities of car gangway 26.140 pairs of a pair of car doors 28 of door sensor detect towards closing the mobile of a position separately, output to efferent 114 closing a detection signal.

In addition,, can enumerate out touch sensor or proximity transducer etc. as door sensor 140, touch sensor through be fixed on each car door 28 on fixed part contact the state that closes that detects, proximity transducer detects a state that closes through noncontact.And, be provided with a pair of stop door 142 that landing doorway 141 is opened and closed at landing doorway 141.When car 3 rested in the stop floor, each stop door 142 engaged with each car door 28 through clamping close device (not illustrating), moved with each car door 28.

Other structures are identical with embodiment 11.

Below, action is described.When from the position detection signal of car position sensor 109, from the speed detection signal of car speed sensor 110 and from the closing a detection signal and be imported into efferent 114 of door sensor 140; At efferent 114; According to the input of each detection signal, calculate the position of car 3, the speed of car 3 and the state of car gangway 26.Afterwards; At efferent 114; The unusual judgment standard of unusual judgment standard of the car speed that obtains respectively from storage part 113 and gangway, compare, the speed of car 3 and the state of car gangway 26 are each had no abnormal the detection with the speed of the car 3 of calculating according to the input of each detection signal and the state of each car door 28.

When normal operation; Because the speed of car 3 has the value roughly the same with the normal speed detecting pattern; And the car gangway 26 when car 3 goes up and down is in a state that closes, thereby, at efferent 114; Detecting the speed of car 3 and the state of car gangway 26 does not have unusually separately, continues the normal operation of elevator.

In the velocity anomaly rising that for example makes car 3 for a certain reason and above under the situation of the 1st abnormal speed detecting pattern 116 (Figure 19); The speed that detects car 3 at efferent 114 has unusually; Cranking signal is outputed to towing machine with brake equipment 106 from efferent 114, and danger signal is outputed to control panel 102 from efferent 114.Like this, towing machine 101 is stopped, and make towing machine, the rotation that drives rope sheave 104 is braked with brake equipment 106 startings.

And; Car gangway 26 when car 3 goes up and down is under the situation of patent door state; Detect the unusual of car gangway 26 at efferent 114; Cranking signal and danger signal are outputed to towing machine respectively with brake equipment 106 and control panel 102 from efferent 114, and the rotation that drives rope sheave 104 is braked.

After towing machine is with brake equipment 106 startings; In the further rising of the speed of car 3 and above under the situation of the 2nd abnormal speed setting value 117 (Figure 19); Output to cranking signal under the state of towing machine with brake equipment 106 keeping, output to emergency braking device 33 to cranking signal from efferent 114.Like this, make emergency braking device 33 startings, through car 3 being braked with embodiment 2 identical actions.

In this lift appliance; Because monitor unit 108 is obtained the speed of car 3 and the state of car gangway 26 according to the information from the detecting unit that the elevator state is detected 112; Any side in the speed of the car of obtaining when being judged as 3 and the state of car gangway 26 has when unusual, outputs to towing machine to cranking signal with any at least side in brake equipment 106 and the emergency braking device 33, thereby; The abnormality detection number of objects of elevator increases; Not only can detect the velocity anomaly of car 3, and can detect the abnormal state of car gangway 26, the abnormality detection that can make 108 pairs of elevators of monitor unit more early and more reliable.Therefore, can further shorten from the elevator generation unusually to producing the time required the braking force of car 3.

In addition, in above-mentioned example, only detect the state of car gangway 26, yet also can use door sensor 140 to detect car gangway 26 and landing doorway 141 state separately through door sensor 140.In the case, detect each stop door 142 by door sensor 140 and close moving of a position towards closing moving of a position with each car door 28 courts.Like this, even at the et out of orders such as clamping close device that car door 28 and stop door 142 are engaged each other, and under the situation that only car door 28 moves, also can detect abnormal elevator.

Embodiment 16

Figure 29 is the constructional drawing of schematically illustrated 16 lift appliance according to the embodiment of the present invention.Figure 30 is the constructional drawing that hoistway 1 top of Figure 29 is shown.In the drawings, electric power supply cable 150 is electrically connected with towing machine 101.Driving electric is provided for towing machine 101 through the control of control panel 102 via electric power supply cable 150.

Electric power supply cable 150 is provided with current sensor 151, and this current sensor 151 is through the electric current of the electric power supply cable 150 of flowing through being measured the actuating device test section of the state that detects towing machine 101.Current sensor 151 outputs to efferent 114 to the current value current corresponding detection signal (actuating device state detection signal) with electric power supply cable 150.In addition, current sensor 151 is configured in hoistway 1 top.And, as current sensor 151, can enumerate out current transformer (CT) etc., this current transformer (CT) is measured the inducing current that the size of current according to the electric power supply cable 150 of flowing through produces.

Car position sensor 109, car speed sensor 110 and current sensor 151 are electrically connected with efferent 114 respectively.In addition, detecting unit 112 has: car position sensor 109, car speed sensor 110 and current sensor 151.

Contain at storage part 113 internal memories: car speed unusual judgment standard identical and the unusual judgment standard of actuating device that N/R benchmark is arranged as the state of judging towing machine 101 with embodiment shown in Figure 19 11.

In the unusual judgment standard of actuating device, be set with 3 grades of detecting patterns.That is, in the unusual judgment standard of actuating device, be set with: normal level is the current value of electric power supply cable 150 of when normal operation, flowing through; The 1st unusual rank has the value bigger than normal level; And the 2nd unusual rank, have than the big value of the 1st unusual rank.

At efferent 114; Calculate the position of car 3 according to the input of position detection signal; And, calculate the speed of car 3 and the state of towing machine 101 respectively and judge key element unusually as multiple (in this example being two kinds) according to speed detection signal and current detection signal input separately.

When the speed of car 3 surpasses the 1st abnormal speed detecting pattern 116 (Figure 19); Perhaps when the size of current of the electric power supply cable 150 of flowing through surpassed the 1st unusual grade of other value in the unusual judgment standard of actuating device, efferent 114 outputed to towing machine to cranking signal (energizing signal) with brake equipment 106.And; When the speed of car 3 surpasses the 2nd abnormal speed detecting pattern 117 (Figure 19); Perhaps when the size of current of the electric power supply cable 150 of flowing through surpassed the 2nd unusual grade of other value in the unusual judgment standard of actuating device, efferent 114 outputed to towing machine to cranking signal with brake equipment 106 and emergency braking device 33.That is, efferent 114 is according to the speed of car 3 and the state intensity of anomaly separately of towing machine 101, and the brake unit of cranking signal is exported in decision.

Other structures are identical with embodiment 11.

Below, action is described.When from the position detection signal of car position sensor 109, when being imported into efferent 114 from the speed detection signal of car speed sensor 110 and from the current detection signal of current sensor 151; At efferent 114; According to the input of each detection signal, calculate the position of car 3, the speed of car 3 and the size of current in the electric power supply cable 150.Afterwards; At efferent 114; Compare unusual judgment standard of the car speed that obtains respectively from storage part 113 and actuating device abnormal state judgment standard with the speed of the car 3 of calculating and the size of current in the electric power supply cable 150, the speed of car 3 and the state of towing machine 101 are each had no abnormal the detection according to the input of each detection signal.

When normal operation; Because the speed of car 3 has and the roughly the same value of normal speed detecting pattern 115 (Figure 19); And the size of current of the electric power supply cable 150 of flowing through is normal level; Thereby at efferent 114, detecting the speed of car 3 and the state of towing machine 101 does not have unusually separately, continues the normal operation of elevator.

In the velocity anomaly rising that for example makes car 3 for a certain reason and above under the situation of the 1st abnormal speed detecting pattern 116 (Figure 19); The speed that detects car 3 at efferent 114 has unusually; Cranking signal is outputed to towing machine with brake equipment 106 from efferent 114, and danger signal is outputed to control panel 102 from efferent 114.Like this, towing machine 101 is stopped, and make towing machine, the rotation that drives rope sheave 104 is braked with brake equipment 106 startings.

And; Size of current at the electric power supply cable 150 of flowing through surpasses under the 1st unusual other situation of level in the actuating device abnormal state judgment standard; Cranking signal and danger signal are outputed to towing machine respectively with brake equipment 106 and control panel 102 from efferent 114, and the rotation that drives rope sheave 104 is braked.

After towing machine is with brake equipment 106 startings; In the further rising of the speed of car 3 and above under the situation of the 2nd abnormal speed setting value 117 (Figure 19); Output to cranking signal under the state of towing machine with brake equipment 106 keeping, cranking signal is outputed to emergency braking device 33 from efferent 114.Like this, make emergency braking device 33 startings, through car 3 being braked with embodiment 2 identical actions.

And; After towing machine is with brake equipment 106 startings; Size of current at the electric power supply cable 150 of flowing through surpasses under the 2nd unusual other situation of level in the actuating device abnormal state judgment standard; Output to cranking signal under the state of towing machine with brake equipment 106 keeping, cranking signal is outputed to emergency braking device 33 from efferent 114, makes emergency braking device 33 startings.

In this lift appliance; Because monitor unit 108 is obtained the speed of car 3 and the state of towing machine 101 according to the information from the detecting unit that the elevator state is detected 112; Any side in the speed of the car of obtaining when being judged as 3 and the state of towing machine 101 has when unusual; Output to towing machine to cranking signal with any at least side in brake equipment 106 and the emergency braking device 33; Thereby the abnormality detection number of objects of elevator increases, and can further shorten from elevator to take place unusually to the braking force required time that produces car 3.

In addition; In above-mentioned example; The current sensor 151 that use is measured the size of current of the electric power supply cable 150 of flowing through detects the state of towing machine 101, yet also can use the temperature sensor that the temperature of towing machine 101 is measured to detect the state of towing machine 101.

And; In above-mentioned embodiment 11～16; Efferent 114 outputed to towing machine to cranking signal with brake equipment 106 before outputing to emergency braking device 33 to cranking signal, yet efferent 114 is outputed to cranking signal: car brake; Be installed separately on car 3 with emergency braking device 33, come car 3 is braked through clamping car guide rail 2; The counterweight drg is installed on the counterweight 107, guides the counterweight guide rail of counterweight 107 to come counterweight 107 is braked through interlinear notes; Perhaps wire stopper is arranged in the hoistway 1, through limiting main rope 4 main rope 4 is braked.

And; In above-mentioned embodiment 1～16; As the delivery unit that is used for offering electric power from efferent emergency braking device; Use electrical cable, yet also can use radio communication device, this radio communication device has transmitter that is arranged in the efferent and the receptor that is arranged in the urgent stop mechanism.And, also can use the fibre-optic cable that transmits optical signal.

And in above-mentioned embodiment 1～16, emergency braking device is braked towards the mistake speed (moving) of lower direction car, however this emergency braking device also can be installed on the car with turning upside down, the mistake speed (moving) of direction is up braked.

Claims (3)

1. lift appliance has:

The car motion detection unit detects the 1st car and the 2nd car actual act separately of in same hoistway, going up and down;

Car door opens and closes detecting unit, is used for the open and-shut mode of above-mentioned the 1st car and the 2nd car gangway is separately detected;

Efferent; According to predicting that from the information of above-mentioned car motion detection unit above-mentioned the 1st car and above-mentioned the 2nd car have collisionless; When doping collision, export cranking signal, and also be imported in this efferent from the switching detection signal of car door switching detecting unit; Under the situation that this car rises or descends when the state that open arbitrary side's of above-mentioned the 1st car and the 2nd car gangway, this efferent sends cranking signal;

Emergency braking device; Be installed in respectively on above-mentioned the 1st car and above-mentioned the 2nd car; Have the car guide rail contact and the braking element that separates that can go up and down with above-mentioned the 1st car of guiding and above-mentioned the 2nd car, the input of this emergency braking device through above-mentioned cranking signal makes above-mentioned braking element push above-mentioned car guide rail to come any at least side in above-mentioned the 1st car and above-mentioned the 2nd car is braked; And

Delivery unit, its above-mentioned cranking signal is sent to above-mentioned emergency braking device from above-mentioned efferent.

2. lift appliance according to claim 1,

Above-mentioned car motion detection unit has: the car position detecting unit, detect above-mentioned the 1st car and above-mentioned the 2nd car position separately; And the car speed detecting unit, detect above-mentioned the 1st car and above-mentioned the 2nd car speed separately.

3. lift appliance according to claim 1,

Above-mentioned car motion detection unit has: inter-car distance detects the distance between above-mentioned the 1st car and above-mentioned the 2nd car from detecting unit; And the car speed detecting unit, detect above-mentioned the 1st car and above-mentioned the 2nd car speed separately.

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