KR100851566B1 - The rope braking device for an elevator - Google Patents

Abstract

The present invention relates to a rope braking device for an elevator, and more particularly, a body, a working plate provided on one side of the body, and the operating plate is spaced apart from the body during normal operation of the elevator. An elevator rope braking device having a rope braking device that is operable to move the operating plate to the body side to restrain the rope during abnormal operation of the operating plate, wherein the operating plate is connected to a hinge shaft of the operating plate so as to move to the body side. Crank means operated; Lock means rotatably coupled to the crank means and vertically moving in accordance with the rotation of the crank means; Switching means disposed on one side of the crank means and switched on / off according to the rotation of the crank means; And a state in which power is always supplied when the power is applied through the switching means, and during emergency braking of the elevator, the lock means is operated to move the operation plate toward the body by the associated crank means to brake the elevator. And a solenoid means provided so as not to operate the lock means during a power failure.

Elevator, emergency braking, blackout, braking device, solenoid, time constant

Description

Rope Braking System for Elevators {THE ROPE BRAKING DEVICE FOR AN ELEVATOR}

1 is an automatic rope braking device configured as a power source for conventional automatic return.

Figure 2 is an overall perspective view of the rope brake device for an elevator of the present invention.

Figure 3 is an exploded perspective view of the rope brake device for an elevator of the present invention.

Figure 4 is a cross-sectional view of the solenoid means at the time of operation standby of the rope brake device for an elevator of the present invention.

Figure 5a is a schematic diagram of a solenoid circuit at the time of emergency braking of the rope brake device for an elevator of the present invention.

Figure 5b is a configuration diagram of the solenoid circuit in the blackout of the elevator rope brake device of the present invention.

6 is a perspective view schematically showing the opening means according to the invention;

Figure 7 is a side view at the time of operation standby of the rope brake device for an elevator of the present invention.

Figure 8 is a side view at the time of emergency braking of the rope brake device for an elevator of the present invention.

Figure 9 is a cross-sectional view of the solenoid means at the time of emergency braking of the rope brake device for an elevator of the present invention.

Figure 10 is a side view at the time of power failure of the rope brake device for an elevator of the present invention.

11 is a cross-sectional view of the solenoid end at the time of power failure of the rope brake device for an elevator of the present invention.

12 is a time constant graph of each solenoid power failure of the rope brake device for an elevator of the present invention.

Explanation of symbols on the main parts of the drawings

1. Rope 10. Body

20. Operation plate 30. Crank means

40. Lock means 50. Switch means

60. Solenoid means 70. Open means

110,120. Side plate 130. Retaining plate

130a. Torsion spring insertion hole 132. Brake lining

134. Link through hole 136. Guide pin

138. Bearing Unit 140. Mounting Frame

150. Bottom plate 210. Brake lining

220.Guide pin guide hole 230.Hinge

240. Hinge shaft 310. Operation link

320.Connecting rod 322.Key

330. Crankshaft 340. Hook

342. Torsion spring insertion hole 344. Push pin

350. Torsion springs 410. Lock body

420. Lock pin 430. Lock hinge

432. Hinge pins 440. Connections

442.Connection pin 510. Switch mounting plate

520. First solenoid open completion detection switch

530. First solenoid open completion switch

602. Power supply section 604. Rectification section

606. Microcomputer 608. Switching unit

610. First solenoid part 611. First bobbin core

612. First coil 613. Coil case

614. Rod 615. Rod Pin

616. First Amateur 620. Second Solenoid Part

621. Second bobbin core 622. Second coil

623. Second Amateur 624. Coil Springs

625. Second solenoid open completion switch

710. Open Hinge 712. Open Hinge Pins

720. Opening bolt 722. Opening bolt pin

730. Opening Nut

The present invention relates to a rope braking device for an elevator, and more particularly, when an emergency braking occurs such as an overspeed due to an abnormal control during operation of an elevator or a driving in a door open state, the elevator car can be decelerated and stopped quickly and safely. The present invention relates to an elevator rope braking device configured so that an emergency braking state does not operate mechanically during a power failure.

In general, all electrically operated safety devices, including elevator rope brakes, must be kept energized at all times during standby, and the safety devices are operated while the power is interrupted during emergency braking.

As such, the reason why the safety device should be operated while the power is interrupted during emergency braking is that if the braking device that operates by receiving the detection signal, on the contrary, if the power supply is required for the operation of the safety device during emergency braking, disconnection, etc. This can cause inoperable state, and in case of standby state without power, the safety device does not need power supply, so even if it is disconnected, it is impossible to check the operation of the safety device during emergency braking.

Therefore, when the safety device is manufactured according to international standards, all existing safety devices are configured to operate together with a short circuit of the power supply when an emergency braking occurs.

1 is an automatic rope braking device configured as a power source for automatic return of the prior art, as shown in FIG. 1, all automatic ropes including an elevator rope braking device of the patent (application number: 10-2004-0028052) The braking system operates during both emergency braking and power outages and is equipped with a separate power generator to automatically return when the power is turned on.

The reason for this separate power unit is that in the case of a manual elevator rope braking system without a power generator, it is necessary to make a standby mode manually after the brake system is operated due to emergency braking or power failure. Because this becomes possible.

Therefore, in the case of manual rope brakes, the return time due to manual opening is not a big problem for small buildings with a small number of elevators.However, a power failure may occur when several elevators are operating at the same time, such as a large apartment complex or a complex mall. When the rope braking device was operated due to the occurrence of the rope braking device, a small number of maintenance personnel could not perform the return work of many elevator rope braking devices at the same time. Therefore, power was turned on such as emergency power generation or power failure with the inevitable delay of the return work. Passengers who have boarded in the elevator are inconvenient to wait for a long time without being rescued from the elevator car until the manual return operation is completed.

Therefore, in most cases, due to such inconvenience, the automatic rope braking device that can be automatically returned when the power is applied is preferred, but there is a problem that the product price is much higher as a separate power generating device is required than the manual braking device.

In order to solve the above problems, an object of the present invention is to meet the international standard that the power should be on when the operation of the braking device is on (on) and in the state of emergency braking or off (power off). It is to provide a manual rope braking system configured to operate mechanically only in emergency braking and not mechanically in case of power failure.

In order to achieve the above object, the elevator rope braking device according to an embodiment of the present invention, the body forming a component installation space, and provided on one side of the body to the elevator towing rope between the fixed brakes And a working plate that is approached and spaced in parallel with each other, and the operating plate is spaced apart from the body during normal operation of the elevator, and the operating plate moves to the body side to restrain the rope during abnormal operation of the elevator. An elevator rope braking device having a rope braking device, wherein the rope braking device comprises: a crank shaft rotatably coupled through a bearing unit fixed to a body surface so that the operating plate moves to the body side; Hemispherical in shape, cut in two parts Is formed and the lower portion is formed with an arc-shaped sliding locking groove and the side of the hook is assembled with a push pin, symmetrically installed on the basis of the hook, one side is combined with the side hole of the hook and the other side is combined with the body side hole A crank means which is connected to the hinge spring of the torsion spring, the connecting rod fixed to both ends of the crank shaft, and the hinge shaft of the operating plate so as to be pivotable to the connecting rod. The lock hinge fastened to the body, the lock body rotatably assembled by the lock hinge and the hinge pin, and rotatably assembled by a bearing provided in the lock body and slide by engaging the sliding locking groove of the hook. Is provided with an arc-shaped locking portion that is in contact with each other, and the sliding contact grooves and the two contact surfaces of the locking portion are formed with lock pins arranged to have different inclination angles, and a connection that is rotatably assembled by the lock pins. Lock means rotatably coupled to the lock means for vertically moving in accordance with the rotation of the crank means; Switching means disposed on one side of the crank means and switched on / off according to the rotation of the crank means; And a state in which power is always supplied when the power is applied through the switching means, and during emergency braking of the elevator, the lock means is operated to move the operation plate toward the body by the associated crank means to brake the elevator. And a solenoid means provided so as not to operate the lock means during a power failure.

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In addition, an elevator rope braking device according to another preferred embodiment of the present invention is installed in one region of the body adjacent to the crank means, and is opened to lock the crank means to rotate arbitrarily in the braking release direction with respect to the operating plate. Means; further comprising.

And, preferably, the opening means, and an opening hinge installed on the body; An open bolt fastened to the open hinge by a pin; Open nut is coupled to the opening bolt and the front surface is formed in a hemispherical shape, it is usually made, the opening nut is fixed to the open hinge, during emergency braking the open hinge is rotated open nut is a crank means It is preferable to lock the crank means to rotate arbitrarily in the braking release direction.

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Preferably, the solenoid means comprises a plurality of solenoids having respective coils, armatures and bobbin cores, and at least one of the solenoids of the plurality of solenoids is deactivated during emergency braking of the elevator to lock the locking means. The solenoid of at least one of the plurality of solenoids is preferably turned off only at the time of power failure of the elevator so that the locking means is not operated by the elastic member.

In addition, the solenoid means is, when the emergency braking of the elevator by the opening of the switching means in accordance with the elastic restoring force of the torsion spring is released from the sliding locking groove of the hook, the crank means is lowered operation operating plate A first solenoid portion operable to move the body side to emergency braking the elevator; And providing a force in the opposite direction corresponding to the force that is released from the sliding locking groove of the hook according to the elastic restoring force of the torsion spring at the time of power failure of the elevator to prevent the release of the crank means. It is preferable to include a; 2 solenoid portion.

The first solenoid part may include: a first bobbin core having a first coil wound on an outer circumference thereof to receive power from the outside, and having a through hole in a vertical direction at the center thereof; A rod mounted in the through-hole of the first bobbin core so as to be movable and having a radial protrusion of a predetermined size at a lower end thereof; And a first armature positioned between the lower end of the first bobbin core and the protrusion of the rod, and magnetized as power is applied through the first coil of the first bobbin core to form different polarities at the upper end and the lower end thereof. It is preferable to include;

Here, the second solenoid portion is mounted adjacent to a lower end of the first bobbin core, a second coil is wound around the outer circumferential surface thereof to receive power from the outside, and a second bobbin having a vertical through hole formed in the center thereof. A core; It is mounted in the through-hole of the second bobbin core so as to be movable, and a radial protrusion having a predetermined size is formed at an upper end thereof, and magnetized as power is applied through the second coil of the second bobbin core. A second armature having different polarities at lower ends thereof; And a coil spring installed on the second bobbin core to elastically support the second armature to be moved downward when power is applied to the second coil of the second bobbin core.

On the other hand, the solenoid means, the power supply for supplying AC power; A rectifying unit receiving the AC power of the power supply unit to generate DC power; A microcomputer receiving the voltage of the rectifier and generating a solenoid driving signal; A switching unit configured to receive a signal of the microcomputer and perform a switching operation; A first solenoid unit connected in parallel with a time delay circuit connected between the rectifying unit and the switching unit to delay the output signal of the microcomputer for a predetermined time, and then cut off driving power; And a second solenoid part connected to the rectifier in series and driven.

In addition, the solenoid means is configured by connecting the time constants of the first solenoid portion and the second solenoid portion differently in parallel, and the first solenoid portion constitutes an RC circuit in which a capacitor is installed in parallel in the coil so that It is preferable that the coil spring elastic force greater than the second solenoid part detachment force is applied to the first solenoid part before the first solenoid part is operated.

Hereinafter, an elevator rope braking apparatus according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is an overall perspective view showing the elevator rope braking apparatus of the present invention, Figure 3 is an exploded perspective view of the elevator rope braking apparatus of the present invention, respectively.

As shown in Figures 2 and 3, the elevator rope braking apparatus according to the present invention, the elevator is a body 10 to form a component installation space, and provided on one side of the body 10, the elevator towing rope ( 1) the operating plate 20 to be approached and spaced in parallel to the fixed brake with the gap between, and the hinge shaft 240 of the operating plate 20 to move the operating plate 20 to the body 10 side. A crank means 30 which is operated in association with the operation link 310, and a lock means 40 which is axially rotatably coupled to the crank means 30 and moves up and down according to the operation of the crank means 30; The switching means 50 is disposed on one side of the crank means 30 and switched on / off according to the rotational movement of the crank means 30, and in a state where power is applied through the switching means 50. Configured to remain energized at all times, In case of emergency braking of the rotor, the lock means 40 operates the crank means 30 to move the operation plate 20 to the body 10 side to brake the elevator. It is configured to include a solenoid means (60) provided not to operate.

First, the body 10 according to the present invention will be described.

2 and 3, the body 10 is manufactured to form a predetermined component installation space, and a pair of side plates 110 and 120 and opposite side plates 110 and 120 spaced apart from each other in parallel to each other. It has a fixing plate 130 for connecting. An installation frame 140 for coupling the braking device to an area adjacent to the rope 1 of the elevator is coupled to the lower sides of the side plates 110 and 120 of the body 10. The installation frame 140 may be formed integrally with both side plates (110, 120). In addition, the bottom of the body 10 is provided with a bottom plate 150 on which the solenoid means 60 to be described later is mounted.

The fixing plate 130 is installed on the body 10 to be parallel to the longitudinal direction of the rope 1, the outer side of the fixing plate 130 is provided with a brake lining 132 in contact with the rope (1). In addition, a pair of link through holes 134 for passing the operation link 310 to be described later is formed on the left and right of the central region of the fixing plate 130, the operation plate 20 to be described later with respect to the fixing plate 130 It has a plurality of guide pins 136 to operate while maintaining parallelism. The guide pins 136 are fixed to four places in the top, bottom, left and right of the fixing plate 130.

In addition, a bearing unit 138 is installed on the inner plate surface of the fixing plate 130, and the crank shaft 330 to be described later is rotatably assembled to the bearing unit 138.

And the working plate 20 is installed to access and space in parallel with the fixing plate 130 and the rope 1 therebetween. A brake lining 210 facing the rope 1 is also provided on the inner plate surface of the operating plate 20. A guide pin guide hole 220 through which the guide pin 136 passes is formed on both side surfaces of the operation plate 20 in a width direction so as to linearly move along the guide pin 136 installed in the body 10. Four guide pin guide holes 220 are provided corresponding to the guide pins 136 of the fixing plate 130. Thereby, the operating plate 20 can be reciprocated to be approached and spaced apart in parallel to the fixed plate 130 along the guide pin 136. Here, four guide pins 136 of the fixing plate 130 is provided, but may be provided in a single or a plurality of pairs or more depending on the size and manufacturing conditions of the braking device.

In addition, a hinge shaft having one end of the operation link 310 rotatably coupled to the rear surface (the opposite side of the brake lining coupling surface) of the operation plate 20 adjacent to each link through hole 134 of the fixing plate 130. 240 is formed. The hinge shaft 240 is inserted through the hinge 230 and the hinge 230 is fixed to the operation plate 20 and integrally formed.

Next, the crank means 30 according to the present invention will be described.

The crank means 30 is operated in conjunction with the operating link 310 to the hinge shaft 240 of the operating plate 20 when the operating plate 20 moves to the body 10 side, specifically the One end of the crankshaft 330, which will be described later, is rotated on the rear central region of the operation plate 20.

That is, both ends of the crank shaft 330 is integrally fixed to the connecting rod 320 by the key 322, one side of the operation link 310 is rotated on the shaft portion protruding on the opposite side of the connecting rod 320 It is possible to assemble, and the other side of the operating link 310 and the hinge shaft 240 is fixed by the operating plate 20 and the hinge 230 in the state passing through the link passage opening 134 of the fixing plate 130 and It is assembled rotatably.

In addition, the hook 340 is integrally fixed to the crank shaft 330 by the key 322, and a torsion spring insertion hole 342 is formed at a side of the hook 340, and a push pin 344 is assembled. have. The upper part of the hook 340 is divided into two so as to pass through the opening bolt 720 to be described later to form a hemispherical groove 340a, the hemispherical groove 340a when the opening nut 730 is tightened in place The hemispherical dent groove 340b is formed to be possible. The lower portion of the hook 340 is formed with an arc-shaped sliding locking groove 340c is combined with the lock pin 420 of the lock means 40 to be described later.

In addition, the torsion spring 350 is installed along the outer circumferential surface of the crank shaft 330, one side of both ends of the torsion spring 350 is inserted into the torsion spring insertion hole 342 formed on the side of the hook 340 The other side is bilaterally disposed on the hook 340 to be inserted into the torsion spring insertion hole 130a formed in the fixing plate 130 of the body 10. Accordingly, when the crank shaft 330 is rotated, the torsion spring 350 generates a moment according to the amount of torsion and a force to reversely rotate the crank shaft 330 is generated.

Here, the arrangement of the crankshaft 330 and the operating plate 20 coincides with the rotation centerline A of the crankshaft 330 and the moving centerline B of the operating plate 20, as shown in FIG. 4. They are arranged at regular intervals (deviation).

Next, the locking means 40 according to the present invention will be described.

The lock means 40 is pivotally coupled to the crank means 30 to serve to transfer the movement according to the rotation of the crank means 30 in the vertical movement.

The lock means 40 has a lock pin 420 is installed along the bearing 410a inserted into the lock body 410 on both sides, the hole formed in the lower portion of the lock body 410 is a lock hinge 430 and It is assembled rotatably by the hinge pin 432. The bearing 430a is inserted into the through hole of the lock hinge 430.

In addition, the lock body 410 is provided with a connection 440 for interworking with the solenoid means 60 to be described later, the connection 440 is provided with an assembling hole 440a by the connection pin 442 It is assembled rotatably. In addition, the other side of the connection 440 is rotatably assembled by the rod 614 and the rod pin 615 of the solenoid means 60 to be described later.

Next, the switching means 50 according to the present invention will be described.

The switching means 50 is disposed on one side of the crank means 30 to serve to switch on / off according to the rotation of the crank means 30, the switch provided on the side of the body 10 The first solenoid opening completion detection switch 520 and the first solenoid opening completion sending switch 530 are installed on the fixed plate 510, and the hook 340 is rotated by manual opening of the opening means 70 to be described later. It is configured to be operated by the push pin 344 installed on the hook 340 side.

Next, the solenoid means 60 according to the present invention will be described.

Figure 4 shows a sectional view of the solenoid in the standby state of the rope brake device for an elevator of the present invention.

As shown in FIG. 4, the solenoid means 60 is assembled and fixed to the bottom plate 150 disposed below the body 10 adjacent to the lock means 40 so as to rotate the lock means 40. As installed, it is configured to always maintain the energized state when the power is applied through the switching means 50, and during the emergency braking of the elevator by operating the lock means 40 and the lock means 40 and The operating plate 20 is moved to the body 10 side by the associated crank means 30 to brake the elevator, and is provided so as not to operate the lock means 40 during power failure.

The solenoid means 60 is preferably formed of a plurality of divided into the first solenoid portion 610 and the second solenoid portion 620.

The first solenoid part 610 has a first coil 612 wound around the first bobbin core 611, an outside of the first bobbin core 611 is assembled to the coil case 613, and an inside of the guide hole. (Not shown) is formed so that the rod 614, which is a nonmagnetic material, is integrally combined with the first armature 615, which is a magnetic material, to move along the guide hole. In this case, the rod 614 has a certain amount of thickness, and the first solenoid portion 610, which is a magnetic material when the second armature 623 of the second solenoid portion 620 and the rod 614 are in contact with each other, will be described later. Between the first armature 615 and the second armature 623 of the second solenoid portion 620 is configured so that a certain amount of space can be secured at all times.

The second solenoid part 620 has a second coil 622 wound around a second bobbin core 621, the outside of the second bobbin core 621 is assembled to the coil case 613, and the inside of the second solenoid part 620 is second. The guide hole (not shown) of the armature 623 and the 2nd solenoid opening completion switch 625 are located. The second solenoid open completion switch 625 is configured to operate in accordance with the vertical movement of the second armature 623. In addition, a coil spring 624 is provided between the second bobbin core 621 and the second coil 622 to pressurize the second armature 623.

On the other hand, Figure 5a is a configuration diagram of the solenoid circuit during the emergency braking of the elevator rope braking device of the present invention, Figure 5b is a diagram showing the configuration of the solenoid circuit at the time of power failure of the elevator rope braking device of the present invention.

Referring to FIGS. 5A and 5B, the solenoid means 60 will be described in terms of circuits. A power supply unit 602 for supplying AC power and a rectifier for transforming AC power of the power supply unit 602 to generate DC power. 604, a microcomputer 606 for generating a solenoid driving signal in response to the voltage of the rectifying unit 604, a switching unit 608 for switching in response to the signal of the microcomputer 606, and the rectifying unit 604. And a first solenoid unit 610 connected in parallel with a time delay circuit connected between the switching unit 608 and the output signal of the microcomputer 606 for a predetermined time, and then driving power is cut off, and the rectifying unit 604. And a second solenoid portion 620 connected in series and driven.

Here, the time constants (R × C) of the first solenoid part 610 and the second solenoid part are differently configured to be connected in parallel, and the first solenoid part 610 connects the capacitor C1 to the resistor R1 in parallel. In the case of power failure, before the first solenoid part 610 operates in the event of a power failure, the second solenoid part 620 first applies the elastic force of the coil spring 624 having a separation force or more to the first solenoid part 610. It is configured to act).

When the solenoid means 60 configured as described above receives the direct current from the power supply unit 602 for supplying AC power through the rectifying unit 604 and generates a driving signal of the first and second solenoid units 610 and 620 when necessary. The principle of driving the first and second solenoid parts 610 and 620 by switching by the switching unit 608 is the same as in the related art. Here, the switching unit 608 is the completion of the opening of the first solenoid detecting the restraining command switch (S1) for detecting the restraining command of the braking device from the control panel (not shown) of the elevator, and the completion of the opening of the first solenoid part 610. The first solenoid opening completion switch (S3) 530 and the second solenoid portion 620 of the detection switch (S2) 520 and the opening completion of the first solenoid portion 610 to the microcomputer 606. A second solenoid opening completion sending switch (S4) 625 for sending the opening completion to the microcomputer 606 is included.

Meanwhile, as shown in FIG. 5, the power supply of the first solenoid part 610 is cut off and the power supply of the second solenoid part 620 is continued during emergency braking of the elevator. Accordingly, since the first solenoid portion 610 is demagnetized and the force pushing the lock means 40 upward is eliminated, the restoring force of the torsion spring 350 of the crank means 50 associated with the lock means 40 is eliminated. As a result, the hook 340 is rotated, whereby the operating plate 20 associated with the hinge shaft is operated to press the rope 1 so that the elevator is in an emergency braking state.

In addition, as shown in FIG. 6, when the elevator is out of power, the first solenoid part 610 is a time constant of the resistor R1 and the capacitor C1, that is, the energy charged in the capacitor C1, as in a circuit. The operation is delayed until is discharged. At this time, the second solenoid part 620 operates first. Accordingly, the second solenoid part 620 has a coil spring 624 force greater than or equal to the leaving force before the first solenoid part 610 operates. It acts on the first armature of the unit 610. After the time constant period, the magnetic force of the first solenoid part 610 is completely lost. Detailed description thereof will be described later.

Next, the elevator rope braking apparatus according to another preferred embodiment of the present invention is further provided with an opening means 70 for manual return.

Figure 6 is a perspective view schematically showing the opening means according to the invention.

As shown in FIG. 6, the opening means 70 is installed in an area of the body 10 adjacent to the crank means 30 such that the crank means 30 is braked with respect to the operating plate 20. It serves to lock the arbitrary rotation.

That is, the opening means 70 has an open hinge 710 is installed in the body 10, the opening bolt 720 is rotatable by the opening bolt pin 722 along the hole configured in the opening hinge 710. Are assembled. The open nut 730 is fastened to the open bolt 720, and the shape of the open nut 730 is composed of a semispherical protrusion 730a.

The opening means 70 configured as described above is normally fixed to the open hinge 710 by fastening the opening nut 730 completely, and the opening bolt 720 is maintained at a right angle to the center of the body 10. do. In addition, at the time of the operation of the crank means 30, it is disposed in the hemispherical groove 340a of the bisected cut shape formed on the hook 340 is configured so that there is no interference.

By this configuration, looking at the operating state of the elevator rope braking apparatus according to the present invention.

First, when the elevator is operating in normal operation, referring to FIG. 4 described above, the operation plate 20 maintains a brake release state approached to the fixed plate 130 side. At this time, the torsion spring 350 maintains a compressed state between the torsion spring insertion hole 130a on the body 10 side and the side torsion spring insertion hole 342 of the hook 340. At this time, the torsion angle is in the state of a ° and has a restoring force corresponding to the torsional moment in the state of torsion angle a °.

In addition, the push pin 344 configured at the side of the hook 340 is in a ON state by pressing the first solenoid opening completion detection switch 520 and the first solenoid opening completion sending switch 530 and the solenoid means 60 is It is energized. The locking portion 422 of the lock pin 420 is in contact with the arc-shaped sliding locking groove 340 formed under the hook 340, and the two contact surfaces are disposed with different inclination angle differences d °.

Therefore, due to the restoring force of the torsion spring 350, the hook 340 tries to rotate in the counterclockwise direction about the crank shaft 330, and due to this force, an arc-shaped slide formed under the hook 340 Since the locking groove 340 and the locking portion 422 of the locking pin 420 generate a force to be released according to the contact inclination angle difference d °, the locking means 40 tries to rotate clockwise with respect to the hinge pin 432. Force is generated.

In order to prevent this, a force must be maintained in a direction opposite to the rotation direction beyond the force to rotate, and this force is generated by the magnetic force of the first solenoid portion 610.

As described above, when the push pin 344 configured at the side of the hook 340 is turned on with the first solenoid opening completion detection switch 520 and the first solenoid opening completion delivery switch 530 turned on, the first solenoid The part 610 is energized, and the rod 614 integrally formed with the first armature 615 moves the first armature 615 to the first bobbin core 611 so that the lock means 40 hinges the pin ( Rotation in the counterclockwise direction relative to 432 generates a force on the lock pin 420 corresponding to the force to be released.

In this case, the second solenoid part 620 is configured to always maintain the energized state in a state where power is applied regardless of the operation of the first solenoid opening completion detection switch 520 and the first solenoid opening completion sending switch 530. The second armature 623 is always kept in contact with the second bobbin core 621, where the second armature 623 is in a state in which the coil spring 624 is compressed, and the second bobbin core 621 is pressed. The lower part of the second armature 623 sliding with the second solenoid opening completion delivery switch 625 configured in the second bobbin core 621 is turned on.

Accordingly, as shown in FIG. 4, the solenoid means 60 at the time of operation standby is in a state where both the first solenoid portion 610 and the second solenoid portion 620 are energized, and the first amateur 615 and the second solenoid portion 620 are energized. The armature 623 is maintained in a state of maintaining a constant gap.

Next, Figure 7 is a cross-sectional view of the solenoid when the operation of the elevator rope brake device of the present invention. As shown in Figure 7, when looking at the movement during the operation of the elevator rope braking device according to the present invention, during the operation standby the crank shaft 330 and the torsion angle of the torsion spring 350 is a ° The position of the fixed hook 340 and the connecting rod 320 is determined, wherein the actuating link 310 pivotally assembled with the connecting rod 320 has the operating plate 20 separated from the rope 1. It is configured to remain as. That is, the hook 340 is rotated in the clockwise direction with respect to the crank shaft 330 to rotate the connecting rod 320 integrally formed with the crank shaft 330 in the same direction is interlocked with the connecting rod 320 The operation link 310 is rotated, and the operation plate 20 pivotably assembled to the other side of the operation link 310 is pushed outward so that the rope 1 is moved away from both brake linings 132 and 210. Let it go. In accordance with the rotation of the hook 340, the push pin 344 configured on the side of the hook 340 is rotated in the same manner by pressing the first solenoid opening completion detection switch 520 and the first solenoid opening completion delivery switch 530 The solenoid means 60 is in an operation standby state. Both the first solenoid part 610 and the second solenoid part 620 are generating a force corresponding to the restoring force by the torsion spring 350 to the lock pin 420 in a state where both of the first solenoid part 610 and the second solenoid part 620 are energized. The brake linings 132 and 210 can be moved without interference to enable the operation of the elevator.

In this state, if an emergency braking condition such as an overspeed detection by a governor or an opening departure according to a departure signal of the floor position detection device of an elevator car occurs, the rope braking device according to the present invention operates as follows. do.

8 is a side view of the elevator rope braking apparatus of the present invention during emergency braking, and FIG. 9 is a cross-sectional view of the solenoid means at the time of emergency braking of the elevator rope braking apparatus of the present invention, respectively.

First, when an abnormal driving situation such as falling of an elevator car generated in a state of energization or stopping at a destination floor and slipping is detected, the braking device restraint command is dropped by the microcomputer 606 as shown in FIG. 5A, The power supplied to the first solenoid part 610 is cut off, and according to the operation of the hook 340, the push pin 344 configured at the side of the hook 340 is connected to the first solenoid opening completion switch 520 and the first solenoid. The elevator cannot be operated until the opening completion sending switch 530 is turned off to operate the first solenoid opening completion detection switch 520 and the first solenoid opening completion sending switch 530 by manual opening. .

Referring to FIG. 8, the power supplied to the first solenoid part 610 is cut off, and as a result, the magnetic force generated between the first bobbin core 611 and the first armature 615 is lost. Since the hook 340 is unable to generate an escape preventing force on the lock pin 420 by the restoring force of the spring 350, the lock means 40 is a hinge pin ( The hook 340 is operated by rotating in a clockwise direction with reference to 432.

At this time, when the lock means 40 is separated from the hook 340, the torsion angle of the torsion spring 350 is b ° state, the push pin 344 configured on the side of the hook 340 is the first solenoid opening completion detection Separated from the switch 520 and the first solenoid open completion sending switch 530, the first solenoid open completion detection switch 520 and the first solenoid open completion sending switch 530 is maintained in the OFF (OFF) state . At this time, the second solenoid part 620 maintains the energized state as shown in FIG. 5A.

Next, as shown in Figure 9, looking at the movement during emergency braking of the elevator rope braking device according to the present invention, the hook 340 counterclockwise the crank shaft 330 by the restoring force of the torsion spring 350 Direction, and as the connecting rod 320 integrally formed with the crank shaft 330 rotates in the same direction, the operating link 310 interlocked with the connecting rod 320 is rotated. By pulling the operation plate 20 pivotally assembled to the other side of the pressurized rope (1) traveling between the brake lining (132, 210). At this time, the OFF signal of the switch is transmitted to the control unit (not shown) of the elevator to confirm that the emergency braking state of the elevator. At this time, the opening bolt 720 of the opening means 70 is disposed without interference between the cut hemispherical grooves 340a formed in the upper portion of the hook 340.

Then, when safety measures such as rescue of the occupant in the braking state of the rope 1 according to abnormal operation of the elevator car and troubleshooting of the elevator are completed, to return to the operation of the braking device, as shown in FIG. 8. , By loosening the opening nut 730 of the opening means 70, the hemispherical protrusion 730a formed on the front surface of the opening nut 730 is coupled to the portion of the slot 340b that has a hemispherical shape on the hook 340. It is possible by tightening.

On the other hand, when a blackout condition occurs in the elevator, the elevator rope braking apparatus according to the present invention operates as follows.

Figure 10 is a side view of the elevator rope braking apparatus of the present invention at the time of power failure, Figure 11 is a cross-sectional view of the solenoid means at the time of power failure of the elevator rope braking apparatus of the present invention, Figure 12 is an elevator rope braking apparatus of the present invention Figure 2 shows the time constant graphs at each solenoid power outage.

If a power failure occurs, all power applied to the solenoid means 60 is lost, so that both the first solenoid portion 610 and the second solenoid portion 620 are armatures 615, 624, and cores 611, 621. The magnetic force generated in) is lost.

Here, as shown in FIGS. 5A and 5B, an RC circuit in which a capacitor C1 is provided in parallel to a coil 52 of the first solenoid part 610 is configured to form a first solenoid part 610 and a second solenoid. The time constant (t = R × C) of the part 620 was configured differently. In addition, as shown in FIG. 12, the operating time range of the coil spring 624 according to the time constant difference between the first solenoid part 610 and the second solenoid part 620 is illustrated. That is, in case of power failure, the first solenoid part 610 is delayed until the energy charged in the capacitor C1 is discharged. As shown in FIG. 10, the second solenoid part 620 is the first solenoid. Before the unit 610 operates, a force of the coil spring 624 greater than the detachment force is applied to the first armature 615 of the first solenoid unit 610.

Compression of the coil spring 624 by the second armature 623, as shown in Figure 10, the power of the second solenoid portion 620 is lost, the second armature by the restoring force of the coil spring 624 Even when 623 is pushing the first armature 615, the initial compression of the coil spring 624 is made to be set above the force to escape.

Thereafter, when the magnetic force of the first solenoid portion 610 is completely lost, a release force is generated between the lock means 40 and the hook 340, but the coil spring 624 force greater than the release force is applied to the first solenoid portion 610. 1 is already acting on the armature 615 can prevent the operation of the braking device due to the separation of the lock means (40). At this time, according to the priority operation of the second solenoid part 620, the second armature 623 is lifted by the coil spring 624, the second solenoid opening completion switch mounted inside the second bobbin core 621 ( 625 is turned off.

Therefore, unlike in the case of emergency braking, in the case of a power failure, as shown in FIG. 5B, the first solenoid opening completion detection switch 520 and the first solenoid opening completion sending switch 530 are in an ON state. When the power is applied, both the first solenoid part 610 and the second solenoid part 620 are directly supplied with power, so that magnetic force is generated. The first solenoid part 610 is supplied with power again, and the first bobbin core Magnetic force is generated between the 611 and the first armature 615 to transmit a force corresponding to the release force between the lock means 40 generated by the restoring force by the torsion spring 350 to the lock pin 420 By doing so, the initial standby state can be maintained as shown in FIGS. 4 and 7. At the same time, the second solenoid open completion detection switch 625 mounted in the second bobbin core 621 is turned on according to the operation of the second armature 623, and the ON signal is an elevator. The control unit (not shown) of the tells that the operation of the elevator is possible. If the second solenoid open completion switch 625 is not turned ON, the second solenoid open completion switch 625 may indicate an inoperable state due to foreign matter, such as a disconnection of the second coil 622 or a sliding part of the second armature 623. This indicates that the standby operation state of the manual braking device is not completed, and thus can be used as a detection means for stopping the operation of the elevator.

The rope braking device for an elevator according to the present invention according to the operation sequence can constitute a locking means that does not operate mechanically even in the event of a power failure while maintaining the braking device in a state where the operating standby state is ON. Will be.

The present invention has been described with reference to specific embodiments of the present invention, but it is apparent that various modifications and changes can be made as described above without departing from the technical spirit described in the claims of the present invention. Therefore, the detailed description of the present invention and the accompanying drawings should not be construed as limiting the technical spirit of the present invention but merely as illustrative.

As described above, according to the present invention, it is not necessary to perform the return operation in case of power failure, and only the operation of the braking device due to the operation of the emergency braking according to the occurrence of very few emergency braking operations may be performed manually. By eliminating the configuration of the power unit for the return of the braking system, it is possible to supply a manual rope braking device having the same effect as the automatic return type, which can significantly lower the product cost of the rope braking device and, as a result, the rope braking device There is an effect that can provide an opportunity to change the market from automatic to manual.

Claims (12)

A body 10 forming a component installation space, and a working plate 20 provided at one side of the body 10 to be approached and spaced in parallel with the fixed brake with an elevator towing rope 1 interposed therebetween, The operating plate 20 maintains a spaced state with respect to the body 10 during the normal operation of the elevator, and the operating plate 20 moves toward the body 10 when the abnormal operation of the elevator causes a rope 1 An elevator rope braking device having a rope braking device operable to restrain The rope braking device, The crank shaft 330 is rotatably combined with the crank shaft 330 through the bearing unit 138 fixed to the surface of the body 1 so that the operating plate 20 moves toward the body 1 side, and the crank shaft 330 integrally with the crank shaft 330. Combined with the upper portion is divided into a semi-spherical groove 340b of the cut shape is formed and the lower portion is formed of an arc-shaped sliding locking groove 340c and the side of the hook 340 is assembled with a pressing pin 344, and It is installed symmetrically with respect to the hook 340, one side is coupled to the side hole of the hook 340, the other side is coupled to the torsion spring 350 and the crank shaft 330 is fixedly installed at both ends Crank means (30) actuated in connection with an actuating link (310) to the hinge shaft (240) of the actuating plate (20) so as to be pivotable to the connecting rod (320) and the connecting rod (320); A lock hinge 430 fastened to the body 1, a lock body 410 rotatably assembled by the lock hinge 430 and a hinge pin 432, and provided inside the lock body 410. It is rotatably assembled by the bearing is provided and is provided with an arc-shaped locking portion 422 is engaged with the sliding locking groove 340c of the hook 340 so that the sliding contact is possible, the sliding locking groove 340c and the locking portion The two contact surfaces of 422 are composed of lock pins 420 arranged to have different inclination angles, and a connection 440 rotatably assembled by the lock pins 420 to be rotatable to the crank means 30. A locking means 40 axially coupled to move up and down according to the rotation of the crank means 30; Switching means (50) disposed on one side of the crank means (30) is switched on / off in accordance with the rotation of the crank means (30); And It is configured to maintain the energized state at all times when the power is applied through the switching means 50, the operating plate by the crank means 30 associated with operating the lock means 40 in the emergency braking of the elevator An elevator rope braking, comprising: a solenoid means (60) provided to move the body (20) to the body (1) side to brake the elevator and not to operate the lock means (40) during a power failure. Device. delete The method of claim 1, Opening means (70) installed in one region of the body (1) adjacent to the crank means (30) to lock the crank means (30) in any rotation in the braking release direction with respect to the operating plate (20); Rope brake device for an elevator characterized in that it further comprises. The method of claim 3, wherein the opening means 70, An open hinge 710 installed on the body 1; An open bolt 720 rotatably fastened to the open hinge 710 by a pin; Is coupled to the opening bolt 720 and the front surface is formed in the hemispherical opening nut 730; Normally, the open nut 730 is fixed to the open hinge 710, and during emergency braking, the open hinge 710 is rotated so that the open nut 730 is moved to the crank means 30 and fastened. Elevator crank brake device, characterized in that for locking the crank means (30) any rotation in the braking release direction. delete delete The method of claim 1, wherein the solenoid means 60, Consists of a plurality of solenoids with each coil, amateur, bobbin core, At least one solenoid of the plurality of solenoids is configured to be off during the emergency braking of the elevator to lift the locking means 40, At least one solenoid of the plurality of solenoids is the element of the elevator rope braking device, characterized in that the element is provided (off) only when the power failure of the elevator so as not to operate the locking means (40) by the elastic member. The method of claim 7, wherein the solenoid means 60, At the time of emergency braking of the elevator, the locking portion 422 of the lock pin 420 is slid by the opening 340c of the lock pin 340 according to the elastic restoring force of the torsion spring 350 by the opening of the switching means 50. A first solenoid portion 610 which is operated from the second crank means 30 to move downward to move the operation plate 20 to the body 1 side to emergency braking of the elevator; The force in the opposite direction corresponding to the force that the locking portion 422 of the lock pin 420 is separated from the sliding locking groove 340c of the hook 340 according to the elastic restoring force of the torsion spring 350 at the time of power failure of the elevator The rope braking device for an elevator, comprising: a second solenoid part 620 for preventing the crank means 30 from operating by providing separation. The method of claim 8, wherein the first solenoid portion 610, A first bobbin core 611 wound around an outer circumferential surface of the first coil 612 to receive power from the outside, and a through hole formed in a vertical direction in the center thereof; A rod 614 mounted to the through-hole of the first bobbin core 611 to be movable and having a radial protrusion of a predetermined size at a lower end thereof; And Located between the lower end of the first bobbin core 611 and the protrusion of the rod 614, the magnetized by the power is applied through the first coil 612 of the first bobbin core 611 and the top and Elevator braking device comprising a; first armature (616) having different polarities formed at the lower end. The method of claim 9, wherein the second solenoid portion 620, The second bobbin core is mounted adjacent to the lower end of the first bobbin core 611, and a second coil 622 is wound around the outer circumferential surface thereof to receive power from the outside, and a through hole in the vertical direction is formed in the center thereof. 621; It is mounted to the through-hole of the second bobbin core 621 so as to be movable, and a radial protrusion having a predetermined size is formed at an upper end thereof, and the power is supplied through the second coil 622 of the second bobbin core 621. A second armature 623 which is magnetized as it is applied to form different polarities at upper and lower ends thereof; And When power is applied to the second coil 622 of the second bobbin core 621, a coil spring installed on the second bobbin core 621 to elastically support the second armature 623 to move downward. (624); Elevator rope braking apparatus comprising a. The method of claim 1, wherein the solenoid means 60, A power supply unit 602 for transforming AC power to generate DC power; A rectifier 604 receiving power from the power source 602 to generate a solenoid driving voltage; A microcomputer 606 which receives the voltage of the rectifier 604 and generates a solenoid driving signal; A switching unit 608 that receives a signal of the microcomputer 606 and performs a switching operation; A first solenoid unit 610 connected in parallel with a time delay circuit connected between the rectifying unit 604 and the switching unit 608 to delay the output signal of the microcomputer 606 for a predetermined time and then cut off the driving power; And And a second solenoid part (620) connected to and driven in series with the rectifying part (604). The method of claim 11, wherein the solenoid means 60, The time constants of the first solenoid part 610 and the second solenoid part 620 are differently configured and connected in parallel, and the first solenoid part 610 comprises an RC circuit in which a capacitor is installed in parallel in the coil. In the event of a power failure, before the first solenoid portion 610 operates, the second solenoid portion 620 is configured to act on the first solenoid 610 to have elastic force of the coil spring greater than the detachment force. Braking system.

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