CN1224691A - Elevator door brake, lock, and hold-open - Google Patents
Elevator door brake, lock, and hold-open Download PDFInfo
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- CN1224691A CN1224691A CN 98127130 CN98127130A CN1224691A CN 1224691 A CN1224691 A CN 1224691A CN 98127130 CN98127130 CN 98127130 CN 98127130 A CN98127130 A CN 98127130A CN 1224691 A CN1224691 A CN 1224691A
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- door
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- slipper
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Abstract
When the elevator operating, the car door 27 is locked on the closing position by a brake block 12, the spring force is get over by an operation of the brake block responding to a propelling type electromagnetic coil 19, and which is engaged with the edge of the door hook 24. When the door is not closed, the friction braking disc 11 contacts to the surface of the door hook, keeping state of opening door to let passenger pass in and out, or when appearing power supply malfunction of the door operating mechanism during the door moving, stopping the moving of the door.
Description
The present invention relates to a kind of device, be used for when elevator moves, elevator door being latched in off position,, just slow down the moving up to stopping of door, and on platform, keep opening the door if in the process of moving door, lose power supply.
Because by original design of the elevator door operating mechanism of linear motor driving, between the former limit of motor and secondary, there are not mechanically connection or contact.When power-off, motor can't provide braking force by opposite house, keeps the power close the door, or keeps the power of opening the door.When linear electric motors are powered, the power that is produced by motor is not enough to provide the safety procedure power that desired maintenance is closed the door (also being known as " evacuationdeterrent force "), and this power need reach more than 450 newton usually.In addition, should not power to linear electric motors when door is not mobile, this is can heating under the static disarmed state because keep at the linear electric motors secondary.
The objective of the invention is to meet the power that braking force that rules require and maintenance are closed the door and kept opening the door for elevator door provides, the door operation mechanism of this power and linear motor driving has nothing to do.
According to the present invention, with a pusher magnet coil friction brake disk is pressed on the surface of elevator door hook, when not needing brake action, the friction braking piece is pushed open from the hook of door with a spring.In one embodiment, only when the needs brake action, just provide electric current to pusher magnet coil; In another embodiment,, just provide electric current to pusher magnet coil so long as elevator door has electricity, and need moving door the time standby linear electric motors the power that supply current the produced power of coming the balance magnet coil.If cut off the power supply in the moving process of door, the instantaneous stopping-down of door is finished by instantaneous action advances formula magnet coil.
The present invention has realized the maintenance or the braking of door on request with a kind of simple mode, does not need to use the power of door operation mechanism.
Can further recognize of the present invention other main points, feature and advantage thereof with reference to accompanying drawing to the detailed description of explanatory embodiment according to following.
Fig. 1 is the partial top view of elevator door brake equipment of the present invention, and it is installed on the elevator, and acts on the hook on the door.
Fig. 2 is a kind of transparent view of exploded of the elevator door with linear electric motors operations that has adopted the brake equipment of Fig. 1.
Fig. 3 is used for the scheme drawing of a coil of action advances formula magnet coil in first embodiment of the invention.
Fig. 4 is a scheme drawing, is illustrated in the electric current that the electric current that uses linear electric motors in the second embodiment of the present invention is offset the braking magnet coil.
Referring to Fig. 1, a friction brake disk 11 attached on the slipper 12, is used an end that slipper is fastened on steel spring 14 such as any proper device such as bolts 16.The other end of spring 14 is fastened on the elevator door beam 18 on the lift car.With bolt 20 pusher magnet coil 19 is fastened on the same member.Magnet coil 19 has an armature 22, and it can push down slipper and allow friction brake disk 11 withstand the door hook 24 that is used for supporting elevator cab door.As shown in Figure 1, when magnet coil is subjected to encouraging, just can between dish 11 and door hook 24, produce brake action.When magnet coil 19 was not subjected to encouraging, spring 14 can make slipper and brake disc 11 from 24 withdrawals of door hook.
As shown in Figure 1, armature 22 does not stretch out fully, and its position is subjected to a restriction of hook 24.When armature 22 stretched out fully, if elevator door cuts out fully, the edge 25 of slipper 12 will be linked up with 24 edge engagement with door, as shown in Figure 2.Elevator door 27 among the figure is connected on the hook 24, and the guide rail 30 that the roller 28 on the hook can allow a hook 24 represent with open circuited form in Fig. 2 moves.Also comprise the secondary of linear electric motors on the door hook 24, its former limit 32 is fastened on the suitable lift car member, for example is to be contained on the beam 18.Profile when with dashed lines 33 has represented that door is opened among the figure.Like this, when door was fully closed and comes energized solenoids 19 with electric current, armature 22 will be advanced to the position shown in Fig. 2 with slipper 12, makes the end of edge 25 and door hook 24 overlapping, thereby elevator door definitely is locked in off position.So just satisfied a requirement of safety procedure.
Referring to Fig. 3, simple embodiment of the present invention is that coil 35 two ends at armature 19 provide a dc voltage when needing brake action.In table 1, represented this operating mode.In first hurdle of table 1, when elevator vertically moved in vertical shaft, door was closed, and needs brake action, need provide 450 newton's power that its maintenance is closed at least on door.Can not provide any electric current this moment to the linear electric motors 32 of actuating doors.But to provide voltage to magnet coil 19, make it that armature 22 is moved to position shown in Figure 2, keep elevator door to close fully.On the other hand, in second hurdle, when car is on the platform and elevator door has been opened fully and allowed the passenger enter and when leaving car, need door be stayed open with brake action.Electric current is provided at this moment linear electric motors 32.Yet to provide electric current to magnet coil 19, allow it that the power (although in fact need only be friction force) of 200 newton's magnitudes is provided, make door remain on open mode shown in Figure 1.As shown in the third column of table 1, do not need brake action in the process opening or closing of door, will provide electric current this moment to linear electric motors 32, but electric current is provided for magnet coil 19, with spring 14 (Fig. 1) hook 24 of friction brake disk 11 from door drawn back, therefore on the door hook, do not have application force.Then shown in the 4th hurdle of table 1,, just need instantaneous brake action that door is stopped, should remove door lock fully then, allow personnel can leave car if door operation mechanism has lost power in the process of closing the door.In this case, provide current of electric although be initially LIM, electric current has just stopped when losing power supply.Needing on this time point provides electric current to magnet coil 19, so that allow friction brake disk 11 opposite houses hook 24 that brake action is provided, as shown in Figure 1.Therefore, in the moving process of door, because the operating mechanism of door has become about 200 newton's power in several seconds, can cause the deficiency of power the most at the beginning, power subsequently drops to zero once more.If the same power supply with door provides electric current to magnet coil, obviously just need to provide the energy of instantaneous braking with another power supply (for example being the emergency light power supply of car).The situation (for example being after losing a power supply) that door runs out of steam has fully been represented on last hurdle in the table 1.Do not need brake action at this moment.All do not have electric current on motor or the magnet coil, and on the door hook, do not have application force yet.
Table 1
Table 2
| The elevator operation | Open the door | Actuating doors | Lose a power supply | There is not a power supply | |
| Effect | Braking | Braking | Do not brake | Instantaneous braking | Do not brake |
| Motor I | Disconnected | Disconnected | Logical | Logical → disconnected → disconnected | Disconnected |
| Magnet coil I | Logical | Logical | Disconnected | Disconnected → logical → disconnected | Disconnected |
| Power | ＞450N | - | 0 | ?0→-200N→0 | 0 |
| The elevator operation | Open the door | Actuating doors | Lose a power supply | There is not a power supply | |
| Effect | Braking | Braking | Do not brake | Instantaneous braking | Do not brake |
| Motor I | Disconnected | Disconnected | Logical | Logical → disconnected → disconnected | Disconnected |
| Magnet coil I | Logical | Logical | Logical | Logical → logical → disconnected | Disconnected |
| Power | ＞450N | - | 0 | ?0→-200N→0 | 0 |
In Fig. 4, represented the second embodiment of the present invention.Except coil 35, also to encourage second coil 37 at this moment with the current of electric of door operation mechanism.In Fig. 4, power supply offers AC-DC conv 40 from AC main power source 39, and conv provides DC electric current by circuit 41 to a DC-AC inverter 42, provides suitable electric current by circuit 43 for linear electric motors 32 by the latter.The loop 45 of DC current of electric is connected to coil 37, it has enough numbers of turn, can respond normal current of electric and produce the power (shown in the arrow that makes progress among Fig. 4) of a separation, the engagement force that this power is provided greater than coil 35 significantly (shown in arrow downward among Fig. 4), so just can offset the power of coil 35, and will brake release fully.
Below by table 2 the further operating mode of second embodiment in the key drawing 4.At the elevator run duration, brake action is identical with previous embodiment, does not have current of electric at this moment, but will provide electric current to magnet coil, allows the slipper 12 and the edge of door hook 24 mesh, as shown in Figure 2.When car is on the platform and door when being opened, the brake action that need produce by means of the electric current by magnet coil stays open door, does not have electric current this moment in motor.Yet, in the operating process of door, do not need brake action, use current of electric to provide a power to offset the power of coil 35, so that drg is separated by coil 37.If in the process of closing the door, lost power, just need instantaneous braking.The current of electric of this moment will disappear and keep disconnection; Can keep the solenoid current of conducting the most at the beginning by diode 49 and big resistance 50 slow electrically-charged conies 48 (Fig. 4) with one, and can keep electric current fast by diode 51 and small resistor 52 by coil 35.The action that big resistance 50 avoids cond 48 to slow down coil 35 when initial excitation.After the energy in the cond 48 is discharged in the coil 35 fully, in magnet coil, just there has not been electric current, brake action also just is through with.In case lost the driving of door operation mechanism, in coil 37, just there has not been electric current, the snap action of coil 35 just can produce the brake action that door is stopped.Prevent that with a diode 55 energy of cond from flowing back into the Vdc power supply, in order to avoid cause power supply short circuit.
Although the present invention describes with reference to its indicative embodiment, those skilled in the art obviously can also realize various changes and additions and deletions to the present invention under the condition that does not break away from the spirit and scope of the present invention.
Claims (2)
1. a kind of brake equipment of elevator cab door is characterized in that comprising:
A lift car;
The door hook that is used for elevator cab door;
Elasticity is arranged on a slipper on the above-mentioned car between above-mentioned car and above-mentioned hook, and above-mentioned slipper is flexibly pushed to above-mentioned car and broken away from above-mentioned hook;
Between above-mentioned slipper and above-mentioned car, be arranged on a pusher magnet coil on the above-mentioned lift car, and the switching motion below when being subjected to encouraging, carrying out:
When above-mentioned elevator door cuts out fully, promote above-mentioned slipper and cross the edge of above-mentioned elevator door, above-mentioned door lock of elevator is fixed on above-mentioned complete off position, or
When above-mentioned elevator door is not opened fully, promote the surface that above-mentioned brake disc withstands above-mentioned hook, between above-mentioned brake disc and above-mentioned hook, produce brake action.
2. according to the brake equipment of claim 1, it is characterized in that above-mentioned pusher magnet coil has two coils, first coil is encouraged in the institute that door operation mechanism is encouraged is free, so that above-mentioned slipper is pushed to above-mentioned door hook or is surpassed hook with above-mentioned magnet coil, the electric current of door operation mechanism is provided to another coil, offset the power that above-mentioned first coil is produced with consequent power, and with above-mentioned spring above-mentioned slipper is withdrawn from above-mentioned hook when in door operation mechanism, having electric current to flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98127130 CN1224691A (en) | 1997-12-31 | 1998-12-30 | Elevator door brake, lock, and hold-open |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/001,728 | 1997-12-31 | ||
| CN 98127130 CN1224691A (en) | 1997-12-31 | 1998-12-30 | Elevator door brake, lock, and hold-open |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1224691A true CN1224691A (en) | 1999-08-04 |
Family
ID=5229846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98127130 Pending CN1224691A (en) | 1997-12-31 | 1998-12-30 | Elevator door brake, lock, and hold-open |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1224691A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626187A (en) * | 2018-12-18 | 2019-04-16 | 日立电梯（中国）有限公司 | A kind of hoistway door auxiliary closing device |
-
1998
- 1998-12-30 CN CN 98127130 patent/CN1224691A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626187A (en) * | 2018-12-18 | 2019-04-16 | 日立电梯（中国）有限公司 | A kind of hoistway door auxiliary closing device |
| CN109626187B (en) * | 2018-12-18 | 2021-07-09 | 日立电梯（中国）有限公司 | Supplementary closing device of hoistway door |
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