KR20170040434A - Unlocking apparatus for elevator governor - Google Patents

Unlocking apparatus for elevator governor Download PDF

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Publication number
KR20170040434A
KR20170040434A KR1020150139204A KR20150139204A KR20170040434A KR 20170040434 A KR20170040434 A KR 20170040434A KR 1020150139204 A KR1020150139204 A KR 1020150139204A KR 20150139204 A KR20150139204 A KR 20150139204A KR 20170040434 A KR20170040434 A KR 20170040434A
Authority
KR
South Korea
Prior art keywords
latch
wheel
governor
guide rod
pawl
Prior art date
Application number
KR1020150139204A
Other languages
Korean (ko)
Inventor
조금용
이종석
김진희
Original Assignee
(주)서광
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)서광 filed Critical (주)서광
Priority to KR1020150139204A priority Critical patent/KR20170040434A/en
Publication of KR20170040434A publication Critical patent/KR20170040434A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • B66B5/044—Mechanical overspeed governors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/26—Positively-acting devices, e.g. latches, knives

Abstract

The present invention relates to a mechanical unlocking device of a governor,
A ratchet wheel 130 selectively engaged with the main wheel 120 to drive the rope braking member 140 and a ratchet wheel 130 which is locked in accordance with the overspeed of the main wheel 120 to latch the teeth formed on the latch wheel 130 Is installed in a governor (9) including a pawl (122)
And a guide bar 250 that moves forward and backward between the latch wheel 130 and the pivot shaft of the latch pawl 122 so that the latch pawl 122 is caught by the teeth and the latch wheel 130 rotates When the guide rod 250 is advanced and then the main wheel 120 is rotated in the opposite direction, the latch pawl 122 rotates over the guide rod 250 and returns to the home position,
Thereby reliably returning the latch pawl 122 to its original position and thereby normalizing the governor conveniently and safely.

Description

[0001] The present invention relates to an unlocking apparatus for an elevator governor,

The present invention relates to a mechanical unlocking device of a governor which is in excess of a governor, and in particular, enables a normal governor returning to a lock state to return to its original state by detecting an abnormal operation.

Generally, an elevator is installed in a high-rise building. As shown in FIG. 1, the elevator basically includes an elevator 3 ascending and descending along a guide rail 2 of a hoistway 1, A balancer 4 that keeps the balancer 5 in balance and a balancer 4 that lifts up and raises the elevator 3 by connecting and winding the main rope Rm to the elevator 3 and an electric motor 6 that drives the hoist 5, , A braking mechanism for stopping the elevator (3), and a control panel (7).

The braking mechanism includes a traction machine brake for stopping the rotation of the traction machine 5, an emergency brake 8 provided on the outside of the elevator 3 and in frictional contact with the guide rail 2, An emergency brake operation lever 8a that cuts off the electric power of the electric motor 6 at the time of overspeed and operates the brake of the hoist 5 and operates the emergency brake 8, a governor rope 8a connected to the emergency brake actuator lever 8a, (Rg), and a governor (9) for controlling the governor rope (Rg).

In normal operation of the elevator, the elevator (3) performs a stop operation by operating the electric motor (6) and the traction machine brake by operation of the control panel of the user. On the other hand, when the power of the electric motor 6 is cut off by the overspeed switch of the governor 9 when the elevator 3 is in abnormal overspeed and the traction brake is operated and the traction brake is not operated for some reason, The emergency brake 8 is operated by the operation of the emergency brake operating lever 8a.

On the other hand, the general configuration of the governor 9 can be seen in the publication of Utility Model Registration Application No. 20-2000-0032031 (November 16, 2000) "Governor of elevator". Hereinafter, the configuration of a general governor 9 will be described with reference to Figs.

The governor 9 includes a governor rope Rg connected to the emergency brake 8 and a main wheel 120 which is rotatably coupled to the governor frame 110 to wind the governor rope Rg, A stopper 124 that rotates together with the centrifugal weight 121 when the centrifugal weight 121 rotates; a state where the rotation is prevented by the stopper 124; A ratchet pawl 122 that rotates when the centrifugal weight 121 is rotated when the centrifugal weight 121 rotates and a latch wheel 122 that rotates in conjunction with the main wheel 120 by the latch pawl 122 a ratchet wheel 130 which rotates together with the latch wheel 130 and a rope braking member 140 which rotates integrally with the governor rope Rg in a frictional contact with the latch wheel 130, 151 and an overspeed switch 150 operated by the touch lever 151.

According to the above configuration, when the speed of the elevator 3 abnormally increases and the moving speed of the governor rope Rg increases along with the main rope Rm, the rotational speed of the main wheel 120 increases. At this time, The stopper 124 rotates while the centrifugal weight 121 is rotated by the centrifugal force, and the lock state of the latch pawl 122 is released. The unlocked latch pawl 122 is pivoted toward the latch wheel 130, and as a result, it is caught by the teeth formed on the latch wheel 130.

Accordingly, the latch wheel 130 rotates as the main wheel 120. In this state, the touch lever 151 is rotated together with the latch wheel 130 to operate the overspeed switch 150, and the overspeed switch 150 The power of the motor 6 is cut off and the brake of the hoisting machine 5 is operated and the hoisting machine 3 is stopped.

At the same time, the rope braking member 140 presses and stops the governor rope Rg. The rope braking member 140 is an emergency control means for operating the emergency brake device 8 during abnormal operation of the electric motor 6 and the brake of the traction machine 5 and is connected to the latch wheel 130 via a link 141 And is pivoted by the rotation of the latch wheel 130 and in frictional contact with the governor rope Rg. The operation of the latch wheel 130 causes the rope braking member 140 to come into frictional contact with the governor rope Rg to stop the governor rope Rg to operate the emergency brake 8.

Here, the governor 9 operated by detecting an emergency situation as described above should be normalized to its original state after the problem is solved. To this end, it is necessary to return the latch pawl 122 caught by the teeth of the latch wheel 130 to its original position. The operation of rotating the latch pawl 122 and returning the latch lever 122 to its original state bite by the stopper 124 is the operation.

However, in order to return the latch pawl 122 to its original position, the operator has to go to the point where the governor 9 is installed. The worker directly rotates the latch pawl 122 caught by the teeth of the latch wheel 130 by lifting the latch pawl 122 with a hand or a tool so as to return to the original position.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to return the latch pawl, which is in a state of being bitten by the latch wheel, to an original position through remote operation according to an abnormal operation of the elevator.

The present invention proposes a mechanical lock releasing device of a governor that can be remotely operated and return the latch pawl to its original position while being held by the latch wheel, thereby achieving the above object.

According to the present invention, since the latch pawl can be returned to its original position by operating the unlocking device remotely, the convenience and stability of the normalizing operation of the governor are improved.

Figure 1 is an illustration showing a typical elevator system,
FIG. 2 is an exemplary diagram showing a configuration of a general governor;
3 is an exemplary view showing a governor provided with an unlocking device according to the present invention,
FIG. 4 is a plan view showing the planar configuration of FIG. 3,
5 is a plan view showing a state in which the guide rod according to the present invention advances,
6 is an illustration showing an operation in which the main wheel and the latch wheel are rotated together by the latch pawl in the governor provided with the unlocking device according to the present invention,
Fig. 7 is an exemplary view showing an operation in which the latch pawl returns to the home position by the guide rod according to the present invention; Fig.

In the present invention, in order to allow the latch pawl, which is in a state of being bitten by the latch wheel in accordance with the abnormal operation of the elevator,

And a guide rod for moving forward and backward between the latch wheel and the rotation shaft of the latch pawl. The guide bar is advanced in a state where the latch pawl is caught by the teeth and the latch wheel is rotated, , The latch pawl rotates while riding over the guide rod, and returns to the home position.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to FIGS.

FIG. 3 is a plan view showing a planar configuration of FIG. 3. FIG. 5 is a plan view of a guide according to the present invention. FIG. This is a plan view showing the rod advancing.

As shown in the figure, the unlocking device according to the present invention is installed in the governor 9 and detects the overspeed driving of the main wheel 120. When the latch pawl 122 is caught by the teeth of the latch wheel 130, 122 to the original position.

The governor 9 to which the present invention is applied includes a conventional governor 9 having a general structure in which a main wheel 120, a latch wheel 130 and a speed switch 150 are installed in a governor frame 110, ), Which are schematically described above with reference to FIGS. 1 and 2. Therefore, a redundant description of the structure and operation thereof is omitted.

The mechanical unlocking device of the governor according to the present invention includes a guide rod 250 formed to advance and retreat. The guide rod 250 is connected to the latch wheel 130 installed in the governor 9 in cooperation with the main wheel 120 and the latch wheel 130 which is rotated by the pivot shaft to selectively engage with the teeth formed on the latch wheel 130. [ (122).

The guide bar 250 advances when the latch pawl 122 is to be returned to its original position in a state where the latch pawl 122 is engaged with the tooth. In this state, when the main wheel 120 rotates in the opposite direction, the latch pawl 122 rotates while riding over the guide rod 250, thereby returning to the home position.

The guide rod 250 is formed to be advanced and retracted by a remotely operated solenoid 210. The solenoid 210 is provided with a support table 240 to advance and retreat by the reciprocating arm 212. The guide rod 250 is installed to protrude from the support table 240 toward the latch wheel 130 So that the solenoid 210 can advance and backward.

The solenoid 210 is fixed by the bracket 60 at the outside of the governor frame 110. The bracket 60 is firmly fixed to the governor frame 110 so that the solenoid 210 is fixedly supported in a state where the solenoid 210 is spaced apart from the governor frame 110. The solenoid 210, (212) extends toward the governor frame (110), and a support table (240) is installed on the reciprocating arm (212). In this configuration, the guide rod 250 is installed on the support table 240 in a state of passing through the governor frame 110.

Meanwhile, the supporting table 240 may be in a disc shape as shown in the drawing, but is not limited thereto. It can be replaced with an equivalent configuration.

A plurality of the guide rods 250 may be formed. They may be formed at regular intervals on a concentric circle. Preferably, they are formed at regular intervals. Accordingly, the guide rod 250 is formed at an adjacent position regardless of the position of the latch pawl 122. Therefore, the distance that the latch pawl 122 is moved to return to the original position can be reduced.

The guide rod 250 may be elastically protruded and retracted and the length thereof may be adjusted. When the external force is applied to the end of the guide rod 250, the spring is contracted, the guide rod 250 is pushed backward, and the length of the spring is reduced. Is a controlled configuration. The end of the guide rod 250 can be caught by the other part of the governor 9 according to the angle of rotation of the main wheel 120 when the guide rod 250 advances. The guide rod 250 which is engaged with the other part is pushed back, whereas the guide rod 250 which does not catch the accessory part normally advances to perform the function.

The support rods 240 on which the guide rods 250 are installed may also be supported by a spring so as to be resiliently returned to the original position. The spring for supporting the supporter 240 is configured such that one end thereof is supported by the governor frame 100 and the other end thereof is supported by the supporter 240. This causes the solenoid 210 to be actuated to pivot the support 240 and resiliently return by the spring when the support 240 returns to its original position.

Hereinafter, the operation of the latch wheel 130 in response to the driving of the main wheel 120 in the governor 9 equipped with the unlocking device according to the present invention and the process of releasing the lock by the unlocking device will be described.

FIG. 6 is a view showing an example in which the main wheel and the latch wheel are rotated together by the latch pawl in the governor provided with the unlocking device according to the present invention. Fig.

First, it detects the overspeed of the main wheel 120. 6, when the main wheel 120 rotates at an overspeed, the stopper 124 rotates while being rotated by the centrifugal additional centrifugal force, so that the lock state of the latch pawl 122 is released.

The latch pawl 122 with its locked state is pivoted and its tip is caught by the teeth formed on the latch wheel 130. This causes the latch wheel 130 to rotate (counterclockwise in the drawing) as the main wheel . Then, the rope braking member 140 (see FIG. 2) is pulled by the rotation of the latch wheel 130, and the rope is strongly pressed. As a result, the main wheel 120 stops rotating so that the locked state is maintained.

In this state, the guide rod 250 is in a standby state at the initial position, the solenoid 210 is in the standby state for operation, and the support rod 240 supporting the guide rod 250 is also in a state of no movement to be.

As shown in FIG. 7, in order to release the lock in the above state, the solenoid 210 is first operated to advance the guide rod 250. When the supporter 240 advances by the solenoid 210, the guide rod 250 advances.

Then, the main wheel 120 is rotated in the opposite direction (anticlockwise direction) from the front. As a method of performing this, there is a method of rotating the main wheel 120 in the opposite direction by winding the rope by operating the electric motor and a hoisting machine.

When the main wheel 120 rotates in the opposite direction as described above, the main wheel 120 rotates in a state in which the guide rod 250 does not move. As a result, the latch pawl 122 moves along the main wheel 120, and then passes over the guide rod 250 while touching the guide rod 250 from the rear end portion. As a result, the latch pawl 122 rotates and returns to the original position, and the stopper 124 returns to the original position to hold the latch pawl 122 again. Here, it is known that the stopper 124 may be pulled by a spring or the like and return to its original position.

Meanwhile, when the main wheel 120 rotates in the opposite direction as described above, the latch wheel 130 is pulled while the rope braking member 140 (see FIG. 2) returns to the original position. Therefore, the latch wheel 130 also rotates separately from the main wheel 120 and returns to its original position.

Through the above process, the governor can be normalized while returning the latch pawl 122 to its original position. Thus, the operator can return to the normal state by operating the unlocking device according to the present invention remotely without operating the latch pawl 122 directly.

9: Governor, 120: Bicycle,
122: latch pole, 124: stopper,
130: latch wheel, 140: rope braking member,
150: Over speed switch,
210: solenoid,
212: reciprocating arm, 240: support,
250: guide rod, 260: bracket

Claims (5)

The latch wheel 130 selectively engaging with the main wheel 120 and the main wheel 120 to drive the rope braking member 140 and the latch wheel 130 releasing the lock state according to overspeed of the main wheel 120, And a latch pawl (122) engaged with the teeth formed on the governor (9)
And a guide bar 250 that moves forward and backward between the latch wheel 130 and the pivot shaft of the latch pawl 122 so that the latch pawl 122 is caught by the teeth and the latch wheel 130 rotates When the guide rod 250 is advanced and then the main wheel 120 is rotated in the opposite direction, the latch pawl 122 rotates over the guide rod 250 and returns to the home position. The method according to claim 1,
The guide rod 250 is moved forward and backward by the remotely operated solenoid 210 and the solenoid 210,
The solenoid 210 includes a support bar 240 and the guide bar 250 is installed on the support bar 240 to move forward and backward. 3. The method of claim 2,
Wherein the guide rod (250) elastically protrudes and retracts and is adjusted in length. 3. The method of claim 2,
The support base 240 is supported by a spring and is pushed toward the latch wheel 130 by the solenoid 210, and is elastically returned to the home position. The method according to claim 1,
Wherein the plurality of guide rods (250) are formed at regular intervals on a concentric circle.
KR1020150139204A 2015-10-02 2015-10-02 Unlocking apparatus for elevator governor KR20170040434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150139204A KR20170040434A (en) 2015-10-02 2015-10-02 Unlocking apparatus for elevator governor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150139204A KR20170040434A (en) 2015-10-02 2015-10-02 Unlocking apparatus for elevator governor

Publications (1)

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KR20170040434A true KR20170040434A (en) 2017-04-13

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KR1020150139204A KR20170040434A (en) 2015-10-02 2015-10-02 Unlocking apparatus for elevator governor

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107489687A (en) * 2017-09-11 2017-12-19 刘振峰 Rapid unhooking mechanism with auxiliary catch
US11591185B2 (en) 2018-10-09 2023-02-28 Otis Elevator Company Remote triggering device, overspeed governor assembly and elevator system
CN116495659A (en) * 2023-06-30 2023-07-28 太原福莱瑞达物流设备科技有限公司 Stacker with self-adaptation adjustment function

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107489687A (en) * 2017-09-11 2017-12-19 刘振峰 Rapid unhooking mechanism with auxiliary catch
CN107489687B (en) * 2017-09-11 2020-06-30 刘振峰 Quick unhooking mechanism with safety hook
US11591185B2 (en) 2018-10-09 2023-02-28 Otis Elevator Company Remote triggering device, overspeed governor assembly and elevator system
CN116495659A (en) * 2023-06-30 2023-07-28 太原福莱瑞达物流设备科技有限公司 Stacker with self-adaptation adjustment function
CN116495659B (en) * 2023-06-30 2023-09-05 太原福莱瑞达物流设备科技有限公司 Stacker with self-adaptation adjustment function

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