KR20080019101A - Elevator governor - Google Patents

Abstract

An elevator governor is provided to stop an elevator car by detecting movement of the elevator car with an opened door through a sensor. An elevator governor includes a releasing unit, a ratchet(170), and a switch returning unit(50). The releasing unit has a protrusion formed by a brake shoe(12), a plurality of recovery levers(121a,121b), a trip lever(15) supported on the protrusion, elastically hinge-coupled by a torsion spring, and having an extended piece(153) at one side, and a supporting piece coupled with the extended piece of the trip lever through a speed adjusting bolt(154). The ratchet has a plurality of suspending grooves(171) at a circumference to be selectively coupled and released to/from the trip lever. The switch returning unit has a solenoid, a bracket having one end contacted to an operation pin and the other end with a guide groove, and a supporting piece installed in a lever(192) to be inserted into the guide groove.

Description

Two way governor of elevator {ELEVATOR GOVERNOR}

1 is a schematic diagram schematically showing a general elevator.

2 is a view of a conventional elevator governor.

3 is a perspective view of the bidirectional governor of the elevator according to the present invention.

4 and 5 are front views showing a braking state in the forward rotation of the bidirectional governor of the elevator according to the present invention.

Figure 6 is a front view showing a braking state in the reverse rotation in the bidirectional governor of the elevator according to the present invention.

7 is a perspective view showing a switch return device in the bidirectional governor of the elevator according to the present invention.

8A and 8C are front views showing the operating state of the switch return device in FIG. 7, and FIG. 8A is a state in which the lever of the switch return device is in a neutral state, and FIG. 8B is a state in which the lever of the switch return device is in the down state. 8C shows when the lever of the switch returning apparatus is in an upside down state.

9 is a detailed circuit diagram of a control circuit unit of the bidirectional governor of the elevator according to the present invention.

<Description of Symbols for Main Parts of Drawings>

12: braker 15: trip lever

121a, 121b: Return lever 130: governor wheel

151: hinge axis 153: extension

154: speed adjustment bolt 171: locking groove

172: groove 173: third slope

174: fourth inclined plane 50: switch return device

140: pendulum

The present invention relates to a two-way governor of an elevator, and more particularly, a braking means for emergency stop of the governor wheel when the platform is suddenly lowered or raised, and a switch return device capable of automatically returning the disconnection state of the motor. It is related with the bidirectional governor of the elevator provided.

In general, as shown in FIG. 1, an elevator includes a hoistway 1, a machine room (not shown) located at the top of the hoistway 1, and a guide rail of the hoistway 1 suspended from the main rope 2. 3) a platform 4 that is elevated along the platform, a counterweight 5 positioned on the opposite side of the platform 4 to maintain balance with the platform 4, and a guide rail 3 mounted in the lower part of the platform 4 in an emergency. ), An emergency stop device (6) for stopping the platform 4, a hoist (7) for elevating the platform (4) by rotating a roller installed in the machine room and wound around the main rope (2), and a hoist (7). When the motor 8 and the platform 4 that drive the motor 8 are abnormally fastened, the power supply of the motor 8 is cut off to activate the brake of the hoisting machine 7, and the speed is continuously increased. Speed control, driving management control and other necessary control of the governor 9, and the platform 4 for operating the It comprises a fisherman 223.

At this time, the governor 9 is usually installed in the machine room, and the governor rope connected to the emergency stop device 6 installed at the lower part of the elevator platform 4 is wound around the governor wheel to rotate the governor wheel and then the speed of the elevator platform 4. Abnormally falls or rises, the pendulum of the governor wheel opens outwards by centrifugal force, and operates the overspeed switch to cut off the power of the electric motor 8 driving the hoist 7 and simultaneously release the brake of the hoist 7. It operates to stop the platform 4.

On the other hand, when the brake of the hoist 7 breaks or the main rope 2 is broken, the platform 4 cannot be stopped. In this case, the pendulum installed on one side of the governor wheel is further opened to pull the rope fixing device. The rope catcher of the apparatus is brought into close contact with the governor rope and the governor rope is stopped, whereby the emergency stop device 6 provided at the lower part of the platform 4 is operated to enable emergency stop.

As a prior art of the elevator governor described above, Korean Utility Model Registration No. 20-0314755 is disclosed.

Looking briefly with reference to FIG. 2 attached to 20-0314755, the frame 110 of both sides and the top is open, rotatably installed on the frame 110 and the governing gross 135 is wound The governor wheel 130, a pair of pendulums 140 and 140 'installed on one side of the governor wheel 130, and one pendulum 140 and 140' installed on one side of the governor wheel 130 and A pair of tripping levers 150 and 150 'contacted, a pair of brakes 160 and 160' installed at one side of the governor wheel 130, and one side of the governor wheel 130, A ratchet 170 engaged with the brakes 160 and 160 ', and a rope fixing body 180 which is installed on one side of the frame 110 and grips and fixes the governing rope 135 wound around the governor wheel 130. ), An overspeed switch 190 installed on the other side of the frame 110, an auxiliary wheel 200 rotating together with the governor wheel 130 on the other side of the governor wheel 130, and the front of the frame 110. Brush installed on the department It comprises a braking member (not shown) operated by a solenoid 230, and a solenoid (230).

Other detailed configurations and detailed descriptions of the operation relations thereof are described in the publications and thus will be omitted here.

In the prior art, when the emergency occurs such as a sudden rotation of the governor wheel, the brake and the ratchet are locked (the rotation of the governor wheel is broken), and then the operator manually rotates the brake to release the locking state of the brake. The work is cumbersome and there is a risk of injury.

In addition, the bolt protruding from the pendulum during forward and reverse rapid rotation of the governor wheel transmits the contact signal to the controller by squeezing the lever of the speed switch, thereby blocking the power supply to the motor. After work, the worker has returned to the original state by hand, but this is also cumbersome work and risk of injury.

The present invention has been made in order to solve the above problems of the prior art, it operates when the speed rises or speeds down, it detects the sliding of the elevator even in the event of a power outage, the platform is operated when the skid is slipping, and the door is opened Its purpose is to provide an elevator's two-way governor that detects and actuates when the platform is moved, mechanically detects the slip and transfers it to the circuit board for operation.

The object of the present invention described above,

A frame having open sides and upper sides, a governor wheel rotatably installed on the frame, and a governor rope wound up, a pendulum provided on one side of the governor wheel, and a brake provided on one side of the governor wheel and interlocked with the pendulum. A ratchet installed on one side of the governor wheel and engaged with the brakes, a rope fixing body mounted on one side of the frame to hold and secure the governor rope wound on the governor wheel, an overspeed switch installed on the other side of the frame, An auxiliary sensor that rotates together with the governor wheel at the other side of the wheel, and an optical sensor configured to detect the rotational speed of the auxiliary wheel which is installed on the rear of the frame and rotates in association with the governor wheel; A control circuit unit configured to calculate a speed of a platform based on a rotational speed of the auxiliary wheel input from the optical sensor, and determine whether braking is performed; the governor of the elevator comprising: a protruding jaw formed in the brake and a plurality of return levers; The trip lever is supported on the protruding jaw and is elastically hinged by a torsion spring, and an extension piece having a predetermined length is formed at one side, and the extension piece of the trip lever is grounded by a predetermined speed adjusting bolt and is located at the upper side of the pendulum. A release device consisting of a support piece installed on the; A ratchet formed on the outer periphery of the plurality of locking grooves to be selectively engaged with and released from the trip lever; And a switch returning device including a solenoid for actuating the pin, and an end thereof in contact with the actuating pin and the other end of the bracket having a guide groove formed therein, and a support pin installed in the lever and inserted into the guide groove. Can be achieved by a two-way governor of the elevator.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The two-way governor (A) of the elevator of the present invention follows the above-described Republic of Korea Utility Model Publication No. 20-0314755 as a basic configuration, the same configuration as the conventional configuration, and the duplicate description thereof will be omitted do.

That is, as shown in Figure 2, the frame 110 of both sides and the top is open, the governor wheel 130 is rotatably installed on the frame 110, the governor rope 135 is wound, and the governor wheel Pendulum 140 is installed on one side of 130, the brake 12 is installed on one side of the governor wheel 130 and interlocked with the pendulum 140, and installed on one side of the governor wheel 130 The ratchet 170 engaged with the copper 12, the rope fixing body 180 which is installed at one side of the frame 110 and grips and fixes the governing rope 135 wound around the governor wheel 130, and the frame ( Overspeed switch 190 is installed on the other side of the 110, the auxiliary wheel 200 to rotate together with the governor wheel 130 in the other side of the governor wheel 130, and is installed on the back of the frame 110 An optical sensor 220 that detects a rotational speed of the auxiliary wheel 200 that rotates in association with the governor wheel 130 and outputs the result to the outside; And a control circuit unit configured to determine whether or not braking by calculating the speed of the platform 4 through the rotational speed of the auxiliary wheel 200 input from the optical sensor 220.

In addition to the above configuration, the present invention is further provided with a braking means including a release device for releasing the locking state of the brake 12.

In addition, a switch return device 50 for returning the speed switch 190 to its original standby state is further provided.

In the accompanying drawings, Figure 3 is a perspective view of the bidirectional governor of the elevator according to the present invention, Figures 4 and 5 are a front view showing a braking state when the forward rotation in the bidirectional governor of the elevator according to the present invention.

The governor wheel 130 is rotatably installed on the central shaft 131 installed in the frame 110 back and forth, and the governor rope 135 is wound around the outer circumference thereof and rotated by the governor rope 135.

At this time, the governor rope 135 is connected to the emergency stop device 6 mounted on the lower part of the platform 4 by a link.

The auxiliary wheel 200 is rotated together with the governor wheel 130 at the other side of the governor wheel 130, and its peripheral part is formed from the light emitting elements of the pair of optical sensors 220 installed at the rear part of the frame 110. A plurality of cutouts 200a are formed at predetermined intervals so that the irradiated light periodically passes through and is incident on the light receiving element.

At this time, when the optical sensor 220 detects the rotational speed of the auxiliary wheel 200, the detection signal is transmitted to the control circuit unit installed on the back of the frame 110.

The control circuit unit calculates the current speed of the elevator platform 4 through the rotational speed of the auxiliary wheel 200 input from the optical sensor 220, and the calculated current speed of the platform 4 is in a predetermined range of the normal speed. If exceeding within the speed (SPEED OVER) signal is output to the control unit 223 for controlling the operation of the platform 4, the calculated current speed of the platform 4 exceeds the predetermined normal speed or more than a predetermined range If it is, the EMER signal is output to the controller 223.

3 to 5, the release device of the present invention is supported by the projection jaw 127 and the plurality of return levers 121a and 121b formed in the brake 12, and the projection jaw 127. And a tripping lever 15 elastically hinged by a torsion spring and having an extension piece 153 having a predetermined length at one side thereof, and a predetermined speed adjusting bolt between the extension piece 153 of the trip lever 15. A ratchet having a support piece 143 which is grounded at 154 and installed on one side of the pendulum 140, and a plurality of locking grooves 171 are formed at an outer circumference thereof to be selectively coupled to and released from the trip lever 15. And 170.

As illustrated in FIG. 4, the brake 12 includes a body 120 axially coupled to the governor wheel 130, an extension 122 extending to one side of the body 120, and an extension 122. At the distal end of the ratchet 170 and optionally the sharpening portion 123 is formed, the spring 13 is installed on one side of the extension portion 122 to provide a pulling force toward the center of the governor wheel 130 And a protruding jaw 127 protruding from the other side of the body 120, and a plurality of return levers 121a and 121b formed on the outer circumference of the body 120.

The sharp part 123 is formed in a substantially hook shape, whereby the first inclined surface 125 and the second inclined surface 126 are symmetrically formed.

The ratchet 170 is formed in a disc shape which is installed on the same central axis as the governor wheel 130, and a plurality of locking grooves 171 are formed at equal intervals on the outer circumference thereof, and the locking groove 171 is the aforementioned sharpened portion 123. The third and fourth inclined surfaces 173 and 174 are recessed to insert the first and second inclined surfaces 125 and 126, and a groove 172 is formed between the third and fourth inclined surfaces 173 and 174.

In the embodiment of the present invention, but three latching grooves 171 of the ratchet 170 is formed at 120 ° intervals, but is not necessarily limited thereto.

Here, the sharp portion 123 of the brake 12 is engaged with the latching portion of the ratchet 170 by forming a predetermined cutting hole 177 at a portion where the third and fourth slopes 173 and 174 and the groove 172 contact each other. It can absorb the impact force generated when the (171) is caught to prevent the risk of cracks or breakage.

Pendulum 140 is inserted into the space portion 132 provided inside the governor wheel 130, the one end is hinged to the governor wheel 130, the weight is installed to be rotatable, the rotation of the governor wheel 130 It is rotated outward by centrifugal force generated during

One end of the pendulum 140, one end of the support piece 143 having a predetermined length is welded and installed integrally.

The trip lever 15 is hinged by an elastic force acting in one direction by a torsion spring (not shown) installed in the hinge shaft 151, and a protrusion 152 is formed downward so that the lower end thereof is a brake 12. It is supported on the protruding jaw 127 of the side, an extension piece 153 is formed toward the support piece 143 of the pendulum 140, the speed adjustment bolt 154 is interposed at the end of the extension piece 153 But the end of the speed adjustment bolt 154 is installed to be grounded to the support piece (143).

The above-described torsion spring is a configuration that is commonly used in the art to provide an elastic force to a member hinged to the shaft, so a detailed description thereof will be omitted.

Therefore, when the pendulum 140 is rotated outward by rapid rotation in the forward direction of the governor wheel 130 (the lowered state of the platform), the extension piece 153 of the trip lever 15 rotates upward in response to the trip. The lever 15 is rotated in conjunction.

When the trip lever 15 is rotated, the lower protrusion 152 rotates outward while being separated from the protrusion jaw 127 of the brake 12.

Accordingly, the brake 12 is rotated downward by the attractive force of the spring 13 of the brake 12, so that the first inclined surface 125 of the sharp part 123 is locked by the latch groove 170 of the ratchet 170. When it is caught and fixed to the third inclined surface 173 of 171, the forward rotation of the governor wheel 130 is stopped for a moment (see FIG. 5).

Then, the release operation of the locked state of the brake 12 and the ratchet 170 is by the release device.

That is, when the governor wheel 130 is pushed and rotated about half a turn in the reverse direction, the pendulum 140 is rotated downward by its own weight to return to its original state.

In addition, while slightly turning the return levers 121a and 121b of the brake 12 in the reverse direction, the trip lever 15 reversely rotates due to the elastic restoring force of the torsion spring 13, and the protrusion 152 rotates. The braking element 12 is grounded on the upper surface of the protruding jaw 127 of 12 to provide the pressing force so that the sharp part 123 is separated from the catching groove 171 of the ratchet 170 and waits in the original state. (See Figure 4).

On the other hand, Figure 6 is a front view showing an example of the operation of the braking means when the reverse rotation in the elevator governor according to the present invention.

When the elevator governor A rotates in reverse (the lifted state of the platform), as described above, the pendulum 140 is rotated outward, and the tripping lever 15 rotates upwards by interlocking the extension piece 153. Rotate in conjunction.

As the brake 12 rotates downward due to the attractive force of the spring 13 of the brake 12, the second inclined surface of the sharp part 123 becomes the fourth of the locking groove 171 of the ratchet 170. When it is caught and fixed to the inclined surface 174, the reverse rotation of the governor wheel 130 is stopped for a moment (see FIG. 6).

That is, the pendulum 140 is rotated outward, and the tripping lever 15 is rotated in conjunction with the extension piece 153 by rotating upward.

Then, the release operation of the locking state of the brake 12 and the ratchet 170 is rotated by pushing the governor wheel 130 about half a turn in the reverse direction as described above, so that the pendulum 140 moves downward by its own weight. Rotate to return to its original state.

7 is a perspective view showing the switch return device 50 in the bidirectional elevator governor according to the present invention.

8A to 8C are front views showing the operating state of the switch return device 50 in FIG. 7, and FIG. 8A shows the lever of the switch return device when the lever of the switch return device is in a neutral state. 8C shows when the lever of the switch return device is lifted up.

As shown in Figure 7 to 8c, the switch return device 50, the pendulum 140 is rotated outward during the speed of the governor wheel 130, the rotation radius is increased, thereby pendulum 140 ) Is a device for returning the lever 192 of the speed switch 190, which is obliquely downward or upward, by contacting the protruding bolt 141 to the original standby state.

The speed switch 190 is installed on the other side of the frame 110. When the pendulum 140 rotates within a predetermined angle range because the governor wheel 130 is speeded within 130% of the normal speed, the speed switch 190 is installed on the pendulum 140. By contact with the bolt 141, the lever 192 is slid downward or upward, and the contact signal generated at this time is transmitted to the controller 223, and is applied to the electric motor 8 under the control of the controller 223. At the same time as the power is cut off, the brake of the hoist 7 is operated to stop the platform.

The switch return device 50 includes a solenoid 51 on which the actuating pin 52 is projected, a bracket 53 having one end contacting the actuating pin 52 and the other end formed with a guide groove 530, and the lever. It is installed on the 192 and comprises a support pin 54 is inserted into the guide groove 530.

The solenoid 51 is operated by a switch not shown.

The guide groove 530 of the bracket 53 is opened to the outside and is formed in an approximately "<" shape to have upper and lower inclined surfaces 531 and 532.

One end of the support pin 54 is fixed to the lever 192, and the other end thereof is installed to be inserted into the guide groove 530.

Accordingly, in order to return the lever 192, which is lowered or raised upward by the contact with the bolt 141 of the pendulum 140, to the original state, the switch of the switch return device 50 is pressed on. When operating, the operation pin 52 protrudes toward the bracket 53, and when the bracket 53 moves forward toward the governor wheel 130 in conjunction with this, the support pin 54 installed on the lever 192 is moved. Since the lever 192 is rotated by the lower inclined surface 532 or the upper inclined surface 531 of the guide groove 530, the lever 192 may be rotated (refer to FIGS. 8B and 8C).

9 is a detailed circuit diagram of the control circuit unit of the governor of the bidirectional elevator according to the present invention.

As shown, the power supply and power cutoff confirmation unit 221 adjusts and outputs the power supplied from the elevator platform 4 to the voltage used in the internal circuit.

The elevator run / stop confirmation unit 222 controls the driving / stop state of the platform 4 by performing an on / off operation according to the operation or stop information of the platform input from the controller 223. Will output

The controller 223 calculates the current speed of the platform 4 based on the rotational speed of the auxiliary wheel 200 input from the optical sensor 220, and calculates the current speed of the platform 4 at a predetermined normal speed. When exceeding within a predetermined range generates a speed exceeding control signal (OVER) and outputs to the speed exceeding signal output unit 226, the calculated current speed of the platform 4 is exceeded over a predetermined range of the predetermined normal speed In this case, the control signal (EMER) generates a control signal for outputting a driving voltage for stopping the governor rope (135) wound on the governor wheel (130) and outputting the generated signal to the risk occurrence signal output unit (228). SOL) is generated and output to the speed excess signal output unit 226.

The control unit 223, when the stop signal of the platform 4 from the elevator run / stop check unit 222 is input to the governor wheel 130 when the rotational speed of the auxiliary wheel 200 is detected from the optical sensor 220 The control signal SOL for stopping the governing governor 135 to be wound and the operation control signal RUN for confirming that each part is operating normally are generated.

The selection button unit 224 checks the normal speed of the platform 4 through the rotational speed of the auxiliary wheel 200 input from the optical sensor 220 in the controller 223 according to the specifications of the platform.

Here, the select button unit 224 'connected to RA 2 sets the number of pulses input per second in the stationary state of the platform (for example, four times per second or five times per second), which is larger than the set value due to shaking of the platform 4. The generated pulses can be filtered so as not to be regarded as the operation of the platform 4 so that the stop and operation of the platform 4 can be determined more accurately.

The speed exceeding signal output unit 226 is an error ERROR according to the speed exceeding control signal OVER output from the control unit 223 when the current speed of the platform 4 is exceeded within a predetermined range of a preset normal speed. Generates a signal, emits a light emitting diode (TRIP LED) and performs a relay (GABANA RELAY) operation to output a speed over signal (SPEED OVER) to the control unit 223.

The gabbana switch 231 is operated by the gabbana solenoid 230, and the fail switch 232 is operated at the time of power failure of the elevator.

The opening operation detecting unit 224 operates the trip LED 2242 and the trip solenoid 2244 according to a control signal output from the control unit 223 when the platform 4 detects the vertical movement in the opening state. The driving voltage SOL-V for stopping the governor rope 135 wound around the 130 is output to the gabbana solenoid 230.

The risk-generating signal output unit 228 is output from the controller 223 when the current speed of the platform 4 exceeds a predetermined range of the normal speed or when the opening operation of the platform 4 is detected. The error relay 2228 is operated according to the generation control signal EMER to output a danger generation signal EMER OUT.

The system return switch 227 stops the platform 4 in response to a danger signal, performs necessary measures, and then returns all systems to their original state.

Referring to the operating relationship of the present invention configured as described above are as follows.

When the lifting platform 4 descends or rises at a normal speed, the pendulum 140 installed on the governor wheel 130 stays within a predetermined rotation angle, so that the bolt 141 coupled to the pendulum 140 has an overspeed switch ( Since the lever 192 of 190 is not operated, the governor wheel 130 rotates normally.

Accordingly, the governor rope 135 is not stopped and is normally wound on the governor wheel 130 and rotated, and the rotation speed of the auxiliary wheel 200 rotating together with the governor wheel 130 at the other side of the governor wheel 130. Is detected through the optical sensor 220, the current speed of the elevator platform 4 is calculated by the control unit 223 of the control circuit unit.

On the other hand, when the platform 4 is normally raised or lowered and abnormally overspeed, the pendulum 140 installed on the governor wheel 130 is rotated outward than the normal case by the centrifugal force so that the bolt coupled to the pendulum 140 ( The contact signal 141 is generated by contacting the lever 191 of the speed switch 190 and downward or upward (see FIG. 11B).

Under the control of the controller 223 receiving the contact signal, the power applied to the electric motor 8 is cut off, and the hoist 7 brake is operated to stop the main rope 2, thereby stopping the platform 4.

In addition, when the pendulum 140 is rotated outward due to the rapid rotation of the governor wheel 130, the extension 122 of the brake 12 is rotated downward in association with the sharpener 123 to ratchet the ratchet portion 123. By being caught by the locking groove 171 of 170, the fixed state is stopped and the rotation of the governor wheel 130 is stopped for a moment (see FIG. 5).

At this time, the ratchet 170 is further rotated by the inertia force generated by excessive rotation of the governor wheel 130, and the link 182 coupled to the ratchet 170 is pulled toward the governor wheel 130. Accordingly, the rope catcher 183 comes into close contact with the governor rope 135 and stops.

On the other hand, in the state in which the governor wheel 130 is stopped by the above-described process, the work force is input to perform the maintenance work.

After the maintenance work is finished, the return operation using the switch return device 50 of the release device and the speed switch 190 of the present invention should be performed.

First, the release device rotates slightly in the reverse direction while holding the return levers 121a and 121b of the brake 12, while the trip lever 15 reversely rotates by the elastic restoring force of the torsion spring, and the protrusion 152 When the braking member 12 is grounded on the upper surface of the protruding jaw 127 of the braking member 12 to provide a pressing force, the braking member 12 is detached from the locking groove 171 of the ratchet 170 to its original state. Return (see FIG. 5).

In addition, in order to return the speed switch 190, when the switch of the switch return device 50 is turned on to operate, the operation pin 52 protrudes toward the bracket 53, and interlocked with the bracket 53. When () is advanced toward the governor wheel (130), the support pins (54) installed in the lever 192 is introduced into the inside by riding the lower inclined surface 532 or the upper inclined surface 531 of the guide groove 530, Due to this, the lever 192 rotates and returns to its original state (see FIGS. 8B and 8C).

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be readily apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, all such modifications and modifications being attached It is obvious that it belongs to the scope of the claims.

As described above, according to the present invention, it is possible to detect the speed increase and the speed drop and operate by detecting the slip using the solenoid forced trimming is also possible.

In addition, when the platform is moved in the event of a power failure or the door is open, there is an effect that the sensor can detect and stop the platform.

In addition, since the groove of the ratchet is able to stop in both directions, there is an effect of braking the car in the up and down direction when the brake is operated.

Claims (8)

A frame having open sides and upper sides, a governor wheel rotatably installed on the frame, and a governor rope wound up, a pendulum provided on one side of the governor wheel, and a brake provided on one side of the governor wheel and interlocked with the pendulum. A ratchet installed on one side of the governor wheel and engaged with the brakes, a rope fixing body mounted on one side of the frame to hold and secure the governor rope wound on the governor wheel, an overspeed switch installed on the other side of the frame, An auxiliary sensor that rotates together with the governor wheel at the other side of the wheel, and an optical sensor configured to detect the rotational speed of the auxiliary wheel which is installed on the rear of the frame and rotates in association with the governor wheel; In the governor of the elevator comprising: a control circuit for determining the braking by calculating the speed of the platform through the rotational speed of the auxiliary wheel input from the optical sensor, The protruding jaw 127 and the plurality of return levers 121a and 121b formed on the brake 12 are supported by the protruding jaw 127 and are elastically hinged by a torsion spring and have a predetermined length on one side. The trip lever 15 having the extension piece 153 and the extension piece 153 of the trip lever 15 are grounded by a predetermined speed adjusting bolt 154 and supported on one side of the pendulum 140. A release device composed of a piece 143; A ratchet 170 having a plurality of locking grooves 171 formed on an outer circumference thereof to selectively engage and release the trip lever 15; The solenoid 51 which actuates the actuation pin 52, and one end is in contact with the actuation pin 52, the other end is installed on the bracket 53, the guide groove 530 is formed, and the lever 192 is guided Switch return device consisting of a support pin (54) inserted into the groove (530); Bidirectional governor of the elevator characterized in that it comprises a. The method of claim 1, The brake 12 includes a body 120 axially coupled to the governor wheel 130, an extension 122 extending to one side of the body 120, and a tip of the extension 122. A ratchet 170 and a sharpening part 123 selectively hooked are formed, and a spring 13 is installed on one side of the extension part 122 and provides a pulling force toward the center of the governor wheel 130. An elevator bidirectional governor comprising a plurality of return levers (121a, 121b) formed on the outer circumference of the body (120) protruding from the other side of the body (120). The method of claim 2, The sharp part 123 is a bidirectional governor of the elevator, characterized in that the first inclined surface 125 and the second inclined surface 126 is formed in a symmetrical hook shape. The method of claim 1, The trip lever 15 has a protrusion 152 formed downward so that the lower end thereof is supported by the protruding jaw 127 of the brake 12, and an extension piece 153 is provided at the side of the pendulum 140. It is formed toward the support piece 143, the speed adjustment bolt 154 is interposed at the end of the extension piece 153 is installed so that the end of the speed adjustment bolt 154 is grounded to the support piece 143 Two-way governor of the elevator, characterized in that made. The method according to claim 1 or 3, The latching groove 171 of the ratchet 170 has a third and fourth inclined surfaces 173 and 174 to be recessed so that the first and second inclined surfaces 125 and 126 of the sharpened portion 123 are inserted therein. The groove 172 is formed between the fourth inclined surfaces 173 and 174, and an incision hole 177 is formed in a portion where the third and fourth inclined surfaces 173 and 174 and the groove 172 are in contact with each other. Two-way governor. The method of claim 1, Guide grooves (530) provided in the bracket (53) of the switch return device 50 is opened to the outside and the upper, lower inclined surfaces (531, 532), characterized in that the elevator is formed. The method according to claim 1 or 6, The support pin (54) of the switch return device (50), one end is fixed to the lever (192), the other end of the elevator, characterized in that it is installed to be inserted into the guide groove (530). The method of claim 1, The control circuit unit, A power supply and power cut-off confirmation unit 221 for adjusting and outputting the power supplied from the elevator platform 4 to a voltage used in an internal circuit; Elevator operation / stop confirmation unit 222 which outputs a signal for the operation / stop state of platform 4 to controller 223 by performing an on / off operation according to the operation or stop information of the platform input from controller 223. ); When the current speed of the platform 4 is calculated through the rotational speed of the auxiliary wheel 200 input from the optical sensor 220, and the calculated current speed of the platform 4 is exceeded within a predetermined range of the predetermined normal speed Generates an overspeed control signal OVER and outputs it to the overspeed signal output unit 226. When the calculated current speed of the platform 4 exceeds a predetermined range of the normal speed, a dangerous occurrence control signal EMER To generate a control signal (SOL) for outputting a driving voltage for stopping the governor rope (135) wound around the governor wheel (130) and outputting the signal to the dangerous signal output unit (228). A controller 223 outputting the signal output unit 226; A selection button unit 224 for checking the normal speed of the platform 4 through the rotational speed of the auxiliary wheel 200 input from the optical sensor 220 in the controller 223 according to the specification of the platform 4; When the current speed of the platform 4 is exceeded within a predetermined range of the preset normal speed, an error ERROR signal is generated according to the speed exceeding control signal OVER output from the controller 223, and the light emitting diode TRIP LED The speed exceeding signal output unit 226 for outputting a speed exceeding signal (SPEED OVER) to the controller 223 by performing a relay (GABANA RELAY) operation at the same time to emit light; When the lifting platform 4 detects the up and down movement in the opening state, the governor rope is wound around the governor wheel 130 by operating the trip LED 2242 and the trip solenoid 2244 according to a control signal output from the controller 223. An opening operation detecting unit 224 for stopping the 135; When the current speed of the platform 4 exceeds a predetermined range of the normal speed or when an opening operation of the platform 4 is detected, an error relay is generated according to a dangerous occurrence control signal EMER output from the controller 223. A dangerous occurrence signal output unit 228 for performing an operation to output a dangerous occurrence signal EMER OUT; A system return switch 227 for stopping the platform 4 by a danger occurrence signal and then performing necessary measures and then returning all systems to their original state; Two-way governor of the elevator, characterized in that consisting of.

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