KR20080015112A - Speed governor for elevator - Google Patents

Abstract

A speed governor for an elevator, whose return operation can be performed from the outside of a hoistway even if an elevator car is at the top of the hoistway. The speed governor has a return lever, operation means, and rotation means. The return lever is displaceable between a normal position and a return position and which, when displaced from the normal position to the return position, rotates a claw to engage it with a trip lever. The operation means displaces the return lever by remote operation. The rotation means forcibly rotates a rope sheave, even if the car is in standstill, to the direction same as the direction in which the rope sheave is rotated when the car is moved upward, thereby moving the claw to the position of the return lever.

Description

Speed governor for elevators {SPEED GOVERNOR FOR ELEVATOR}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an elevator governor that can remotely return even when the car is at the top end in an elevator provided with a governor in a hoistway.

The structure of the conventional governor for elevators is shown to FIGS. 11-16 (for example, refer Japanese patent document 1). 11 is an overall configuration diagram showing an example of an elevator having a conventional elevator governor, FIG. 12 is a detailed view showing the configuration of a conventional governor, FIG. 13 is a front view showing the main part of the governor, and FIG. 14 is of FIG. Front view which shows the state which rocked | turned back a return lever to a return position, FIG. 15 is a front view which shows the principal part of a governor when a projection is in the position which is not orientated to a return lever, FIG. 16 is a return of FIG. It is a front view which shows the state which rocked the lever to a return position.

In FIG. 11, the drive device 2 is provided in the upper part of the hoistway 1. As shown in FIG. The main rope 3 is wound around the sheave 2a of the drive device 2. A car 4 is suspended on one end of the main rope 3, and a counterweight 5 is suspended on the other end of the main rope 3. In the hoistway 1, a pair of car guide rails 6 and a pair of weight guide rails (not shown) which guide the lifting of the car 4 and the counterweight 5 are provided.

In the lower part of the cage | basket | car 4, the emergency stop device 7 for making the cage | basket 4 emergency stop is provided. The governor support member 8 is fixed near the upper end of the cage guide rail 6. On this governor support member 8, the governor 9 which detects the overspeed of the cage | basket | car 6 and operates the emergency stop device 7 is supported.

In the vicinity of the bottom of the hoistway 1, the tension sheave 10 is provided freely for rotation. The upper end and the lower end of the governor rope 11 are wound around the governor 9 and the tension sheave 10, respectively. The governor rope 11 is connected to the emergency stop device 7 via the lever 12, and is circulated with the lifting and lowering of the car 4.

The boarding point 13 is provided with the door 14 of a boarding point. The return wire 41 is arrange | positioned between the governor 9 and the boarding point 13 of the uppermost floor. The base end part which is the edge part of the boarding point side of the return wire 41 is arrange | positioned under the boarding point threshold.

FIG. 12 is a front view illustrating the governor 9 of FIG. 11. In FIG. 12, the sheave 21 on which the governor rope 11 is wound is supported by the base 23 freely rotating about the sheave shaft 22. On the side surface of the sheave 21, a pair of fly weights 25 freely rotated around the pin 24 are mounted. These pairs of fly weights 25 are connected to each other by links 26.

An operation claw 37 is fixed to one end of one fly weight 25. The fly weight 25 is rotated by the centrifugal force by the rotation of the sheave 21. Thereby, the operation claw 37 is displaced radially outward of the sheave 21. Between the other end of the one fly weight 25 and the sheave 21, a balance spring 27 is provided which opposes the centrifugal force. The base 23 is equipped with a car stop switch 28 for operating a brake device (not shown) of the drive device 2. The car stop switch 28 has a switch lever 28a that is operated by an operation claw 37.

The sheave 21 is equipped with a trip lever 72 which can be rotated about an axis 71 parallel to the pin 24. A part of the trip lever 72 is in contact with one fly weight 25, and is rotated about the shaft 71 by the rotation of the fly weight 25. The shaft 71 is provided with a torsion spring 73 which biases the trip lever 72 in the direction (clockwise direction in the drawing) that abuts the fly weight 25.

The base 23 is provided with a ratchet 30 rotatable about the sheave shaft 22. Many teeth are provided in the outer peripheral part of this ratchet 30. The one pin 24 is axially supported by a claw 29 which is selectively engaged with any one of the trip lever 72 and the ratchet 30. The claw 29 is urged in the direction to be engaged with the ratchet 30 by the drag spring 74. Although the claw 29 is normally engaged with the trip lever 72 and is opened from the ratchet 30, when the engagement with the trip lever 72 is removed, the claw 29 is rotated by the spring force of the drag spring 74 to ratchet the ratchet 30. 30 is tailored to walk.

The arm 31 which is rotatably mounted to the base 23 is rotatably attached to the shoe 32 pressed down by the governor rope 11. A spring shaft 33 penetrates through the spring receiving portion 31a of the arm 31. A connecting rail 34 is connected between one end of the spring shaft 33 and the ratchet 30. The other end of the spring shaft 33 is provided with a spring support member 35. A rope grip spring 36 for pressing the shoe 32 against the governor rope 11 is provided between the spring support portion 31a and the spring support member 35.

The return lever 42 is rotatably attached to the base 23 about the shaft 43 parallel to the sheave shaft 22. The claw 29 is provided with a projection 44 which is free to be rotated by pressing the return lever 42 by swinging. Between the base 23 and the return lever 42, the return spring 45 which biases the return lever 42 in the direction which opens from the protrusion 44 is provided.

The tip of the return wire 41 is connected to the return lever 42. The return wire 41 is inserted into the tube 46 having plasticity and guided to the governor 9. The tip end of the tube 46 is fixed to the base 23 in the vicinity of the return lever 42. This operating means has a return wire 41, a return spring 45 and a tube 46.

FIG. 13: is a front view which shows the principal part of FIG. 12, and FIG. 14 is a front view which shows the state which rocked the return lever 42 of FIG. 13 to a return position. In FIG. 13, the return lever 42 is in a normal position and is separated from the projection 44. From the state of FIG. 13, when the return wire 41 is pulled to the right of the drawing, the return lever 42 swings back to the return spring 45 to the return position, so that the projection 44 returns to the return lever ( 42). As a result, the claw 29 is rotated in the clockwise direction in the drawing against the drag spring 74 to engage with the trip lever 72.

Next, the operation will be described. When the lifting speed of the car 4 reaches the first overspeed (normally about 1.3 times the rated speed), the actuating claw 37 is rotated by the centrifugal force and the operating claw 37 switches the car stop. The switch lever 28a is rotated by abutting against the switch lever 28a. As a result, the switch 28 operates, the power supply of the drive device 2 is cut off, and the car is stopped by the brake device of the drive device 2.

Moreover, even if the drive device 2 stops, for example, when the main rope 3 is broken, it descends continuously without stopping the cage | basket | car 4, and the descending speed of the cage | basket | car 4 is 2nd. When the overspeed (typically about 1.4 times the rated speed) is reached, the fly weight 25 further rotates, and the rotation amount of the trip lever 72 also increases with the trip lever 72 and the claw 29. ) Is missing. As a result, the claw 29 is rotated by the spring force of the drag spring 74 to be engaged with the teeth of the ratchet 30. Then, the ratchet 30 is rotated slightly in the counterclockwise direction of FIG. 12 together with the sheave 21.

The rotation of the ratchet 30 causes the arm 31 to rotate in the counterclockwise direction in FIG. 12, the shoe 32 abuts against the governor rope 11, and the shoe 32 by the rope grip spring 36. ) Is pressed down on the governor rope 11 to brake the governor rope 11. When circulation of the governor rope 11 is stopped, the lever 12 is operated by the cage | basket | car 4 continuing descending, and the emergency stop device 7 operates.

Next, the return operation after the operation of the emergency stop device 7 and the governor 9 will be described. In the return operation, first, the car 4 is slightly raised to release the braking state to the car guide rail 6 of the emergency stop device 7. After that, when the car 4 is raised further, the sheave 21 rotates clockwise in FIG. 12 through the governor rope 3, and the engagement between the claw 29 and the ratchet 30 is lost, and the ratchet is removed. 30 also rotates clockwise in the figure to return to the original position. As a result, the arm 31 returns to its original position so that the shoe 32 falls off the governor rope 11.

Thereafter, the elevator 4 is raised to a position where the ceiling of the car 4 can enter the ceiling, and then the door 14 of the platform is opened from the platform 13 on the top floor, and the worker opens the door 4. Get on The return operation is completed by reaching the governor 9 from the car 4 and engaging the claw 29 with the trip lever 72.

On the other hand, the position of the cage | basket | car 4 when the governor 9 made the 2nd overspeed operation is the vicinity of the platform 13 of the uppermost floor, From that position, the door 14 of the platform is opened, and the cage | basket | car 4 is opened. If it is not possible to enter the ceiling, the door 14 of the landing is opened, the base end of the return wire 41 at the lower part of the threshold is taken out to the landing side, and the base end of the return wire 41 is taken out from the tube 46. As a result, on the side of the governor 9, the return lever 42 swings against the return spring 45 in the clockwise direction of FIGS. 12 to 14, and the projection 44 is pressed by the return lever 42. Then, the claw 29 is rotated in the clockwise direction of FIGS. 12 to 14 against the drag spring 73 to engage with the trip lever 72.

In addition, when the return lever 42 and the protrusion 44 are not in the positional relationship which opposes, first, after moving the return lever 42 to a return position, the sheave 21 is rotated clockwise. Thereby, the projection 44 which rotates integrally with the sheave 21 is pressed against the return lever 42 in a return position.

By operating in this way, even when the cage | basket | car 4 is in the vicinity of the platform 13 of the uppermost floor, and the position door 14 of the platform cannot be opened and it cannot enter the ceiling of the cage | basket | car 4 at the position, The claw 29 can be engaged with the trip lever 72 by remote operation from the) side.

Therefore, even when the governor 9 is arranged in the hoistway 1, the governor 9 does not provide an opening for the operator to enter the hoistway 1 or access the governor 9 in the landing wall. It is possible to easily perform the return operation for the remote operation, thereby improving the workability of the return operation.

Patent Document 1: Japanese Patent Application Laid-Open No. 2002-370879

Problems to be Solved by the Invention

In the conventional elevator governor, there is only one chance that the projection 44 and the return lever 42 face each other while the sheave 21 rotates once. Therefore, as shown in FIG. 15, when the projection 44 is not in the position of the return lever 42, even if the return wire 41 is pulled and rocked, the return lever 42 is shown in FIG. Likewise, the claw 29 cannot be moved to the return position. Therefore, in order to return, it is necessary to rotate the sheave 21 clockwise to the position shown in FIG. However, in order to rotate the sheave 21 clockwise, it is necessary to raise the car 4. If the car 4 is at the top of the hoistway 1, the car 4 cannot naturally be raised further, and it is also impossible to rotate the sheave 21 clockwise. Therefore, in such a case, the problem that the governor 9 cannot be returned from the state which operated the emergency stop device 7 has arisen.

This invention is made | formed in order to solve the above subjects, and it is providing the elevator governor which can perform a return operation of a governor from outside a hoistway even when a cage | basket | car is in the outermost part of a hoistway.

Means to solve the problem

In the elevator governor according to the present invention, a governor rope installed in a hoistway and configured to operate an emergency stop device is wound and rotated according to the lift speed of the car, and is provided on the sheave by centrifugal force by the rotation of the sheave. Rotating fly weights, balanced springs that push the fly weights against the centrifugal force, ratchets rotatably installed around the sheave axis of the sheave, and trips installed rotatably on the sheaves and tripped by rotation of the fly weights. It is rotatably installed on the lever and the sheave, and is normally engaged with the trip lever, and when the descending speed of the car reaches a preset overspeed, the engagement with the trip lever is disengaged and the ratchet is engaged with the ratchet so that The ratchet to rotate the ratchet in the same direction as the sheave A shoe for braking the governor rope when the tooth is rotated, a return lever configured to be displaceable between the normal position and the return position, and to rotate the claw to engage the trip lever by being displaced from the normal position to the return position; Forcibly rotating the sheave in the same direction as the direction of rotation when the car is operating in the ascending direction, even when the car is stationary, and the operation means for displacing the return lever by remote operation. It is provided with the rotation means which moves a claw to the position of a return lever.

Effects of the Invention

According to the present invention, even when the car is at the top of the hoistway, the return operation of the governor can be performed from outside the hoistway.

BRIEF DESCRIPTION OF THE DRAWINGS It is the whole block diagram which shows an example of the elevator provided with the elevator governor in Example 1 of this invention.

Fig. 2 is a detailed diagram showing the configuration of a governor in Embodiment 1 of the present invention.

It is a front view which shows the principal part of the governor in Example 1 of this invention.

4 is a front view illustrating a state in which the roller abuts on the sheave by swinging the return lever and the arm of FIG. 3 to the return position.

5 is a front view illustrating a state in which the sheave rotates in the clockwise direction when the roller is driven, and the projection is pressed by the return lever.

It is a front view which shows the boarding point of the elevator provided with the elevator governor in Example 1 of this invention.

FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 6.

FIG. 8 is a cross-sectional view illustrating an operating state of the return wire of FIG. 7.

It is a top view which shows a part of elevator boarding point when the base end part of a return wire is arrange | positioned behind the wall part of boarding point.

FIG. 10 is a plan view illustrating an operation state of the return wire of FIG. 9.

It is the whole block diagram which shows an example of the elevator provided with the conventional governor for elevators.

12 is a detailed view showing the configuration of a conventional governor.

It is a front view which shows the principal part of a governor.

FIG. 14 is a front view illustrating a state in which the return lever of FIG. 13 is rocked to the return position. FIG.

Fig. 15 is a front view showing the main part of the governor when the projection is in a position not facing the return lever.

FIG. 16 is a front view illustrating a state in which the return lever of FIG. 15 is rocked to a return position. FIG.

* Description of the sign

1 hoistway

2 drive

2a sheave

3 main rope

4 elevator car

5 counterweight

6 car guide rail

7 emergency stop device

8 governor support member

9 governor

10 tension sheave

11 governor rope

12 lever

13 platforms

14 door of platform

21 sheave

22 sheave shaft

23 expectations

24 pin

25 fly weights

26 links

27 balanced springs

28 Car Stop Switch

28a switch lever

29 claw

30 ratchet

31 cancer

31a spring support

32 shoe

33 spring shaft

34 Connection lever

35 spring support member

36 Rope Grip Spring

37 working claws

41 return wire

42 Return lever

43 axes

44 turning

45 return spring

46 tubes

47 Platform Location Indicator

48 cases

49 links

50 front covers

51 operating mechanism

52 three-sided frame

53 Manipulation Tools

54 actuator

55 wiring

71 axes

72 trip lever

73 torsion spring

74 Drag Spring

90 rotating means

91 cancer

92 rollers

93 axes

Best Mode for Carrying Out the Invention

BRIEF DESCRIPTION OF DRAWINGS To describe the invention in more detail, it is described with reference to the accompanying drawings.

Example 1

1 is an overall configuration diagram showing an example of an elevator provided with an elevator governor in Embodiment 1 of the present invention, Figure 2 is a detailed view showing the configuration of the governor in Embodiment 1 of the present invention, Figure 3 is The front view which shows the principal part of the governor in Example 1 of this invention, FIG. 4 is the front view which shows the state which the roller contacted the sheave by rocking the return lever and arm of FIG. 3 to a return position, FIG. 5 is a roller Is a front view showing the state in which the sheave rotates in the clockwise direction and the projection is pressed against the return lever by driving the motor, and FIG. 6 is a front view showing the landing of the elevator provided with the elevator governor according to the first embodiment of the present invention. 7 is a cross-sectional view taken along the line VII-VII in FIG. 6, FIG. 8 is a cross-sectional view showing the operating state of the return wire in FIG. A plan view showing a part of the elevator platform when placing the proximal end for the wire, Figure 10 is a plan view showing an operation state of the wire for the back of Fig.

In FIG. 1, the drive device 2 is provided in the upper part of the hoistway 1. As shown in FIG. The main rope 3 is wound around the sheave 2a of the drive device 2. A car 4 is suspended on one end of the main rope 3, and a balance weight 5 is suspended on the other end of the main rope 3. In the hoistway 1, a pair of car guide rails 6 and a pair of weight guide rails (not shown) which guide the lifting of the car 4 and the counterweight 5 are provided.

In the lower part of the cage | basket | car 4, the emergency stop device 7 for making the cage | basket 4 emergency stop is provided. The governor support member 8 is fixed near the upper end of the cage guide rail 6. On the governor support member 8, a governor 9 for detecting the overspeed of the car 6 and operating the emergency stop device 7 is supported. This governor 9 is provided with the rotation means 90 unlike the conventional governor.

In the vicinity of the bottom of the hoistway 1, the tension sheave 10 is provided freely for rotation. The upper end and the lower end of the governor rope 11 are wound around the governor 9 and the tension sheave 10, respectively. The governor rope 11 is connected to the emergency stop device 7 via the lever 12, and is circulated with the lifting and lowering of the car 4.

The boarding point 13 is provided with the door 14 of a boarding point. The return wire 41 is arrange | positioned between the governor 9 and the boarding point 13 of the uppermost floor. The base end part which is the edge part of the boarding point side of the return wire 41 is arrange | positioned under the boarding point threshold.

FIG. 2 is a front view illustrating the governor 9 of FIG. 1. In FIG. 2, the sheave 21 on which the governor rope 11 is wound is supported by the base 23 freely rotating about the sheave shaft 22. On the side surface of the sheave 21, a pair of fly weights 25 freely rotated around the pin 24 are mounted. These pairs of fly weights 25 are connected to each other by a link.

An operation claw 37 is fixed to one end of one fly weight 25. The fly weight 25 is rotated by the centrifugal force by the rotation of the sheave 21. By this, the actuating claw 37 is displaced radially outward of the sheave 21. Between the other end of the one fly weight 25 and the sheave 21, a balance spring 27 is provided which opposes the centrifugal force. The base 23 is equipped with a car stop switch 28 for operating a brake device (not shown) of the drive device 2. The car stop switch 28 has a switch lever 28a operated by the operation claw 37.

The sheave 21 is equipped with a trip lever 72 which can be rotated about an axis 71 parallel to the pin 24. A part of the trip lever 72 is in contact with one fly weight 25, and is rotated about the shaft 71 by the rotation of the fly weight 25. The shaft 71 is provided with the torsion spring 73 which presses the trip lever 72 down in the direction (clockwise direction of drawing) to abut the fly weight 25.

The base 23 is provided with a ratchet 30 rotatable about the sheave shaft 22. Many teeth are provided in the outer peripheral part of this ratchet 30. The one pin 24 is axially supported by a claw 29 which is selectively engaged with any one of the trip lever 72 and the ratchet 30. The claw 29 is pressed down in the direction engaged with the ratchet 30 by the drag spring 74. Although the claw 29 is normally engaged with the trip lever 72 and is opened from the ratchet 30, when the engagement with the trip lever 72 is removed, the claw 29 is rotated by the spring force of the drag spring 74 and the ratchet ( 30) is tailored to walk.

The arm 31 which is rotatably attached to the base 23 is rotatably attached to the shoe 32 pressed down by the governor rope 11. A spring shaft 33 penetrates through the spring receiving portion 31a of the arm 31. The connecting lever 34 is connected between one end of the spring shaft 33 and the ratchet 30. The other end of the spring shaft 33 is provided with a spring support member 35. A rope grip spring 36 is provided between the spring support portion 31a and the spring support member 35 to lower the shoe 32 onto the governor rope 11.

The return lever 42 is rotatably attached to the base 23 about the shaft 43 parallel to the sheave shaft 22. The claw 29 is provided with a projection 44 which is free to be rotated by being pressed by the swinging of the return lever 42. Between the base 23 and the return lever 42, the return spring 45 which presses down the return lever 42 in the direction opened from the projection 44 is provided.

The tip of the return wire 41 is connected to the return lever 42. The return wire 41 is inserted through the plastic tube 46 and guided to the governor 9. The tip end of the tube 46 is fixed to the base 23 in the vicinity of the return lever 42. This operation means has a return wire 41, a return spring 45 and a tube 46.

The rotating means 90 includes a shaft 93 mounted on the base 23 in parallel with the sheave shaft 22, an arm 91 mounted on the shaft 93 so as to be able to swing, and the arm. It is provided with the roller 92 which is attached to the opposite side to the said shaft 93 of 91, and can be rotationally driven by a remote control means (not shown) as needed. The tip end of the return wire 41 is connected to the arm 91. The return wire 41 is inserted through the tube 46, but is also connected to the return lever 42 at the exposed portion just in front of the insertion port.

Fig. 3 is a front view showing the main part of the governor, Fig. 4 is a front view showing a state where the roller abuts on the sheave by swinging the return lever and arm of Fig. 3 to the return position, and Fig. 5 is a sheave by driving the roller. Is the front view which shows the state which rotated clockwise and the protrusion pressed against the return lever. In FIG. 3, the return lever 42 is in a normal position and is separated from the projection 44. Thus, when the return wire 41 is pulled in the right direction in FIG. 3, both the return lever 42 and the arm 91 return to the return spring 45, and the return lever 42 returns. In position, the arms 91 are rocked to the rotational position respectively (see the change from FIG. 3 to FIG. 4). That is, the return lever 42 swings against the return spring 45 to the return position, and the projection 44 is pressed by the return lever 42. As a result, the claw 29 is rotated in the clockwise direction of the drawing against the drag spring 74 to engage with the trip lever 72. In addition, the arm 91 swings against the return spring 45 to the rotational position and drives the roller 92 which abuts on the sheave 21 by the movement of the arm 91 in the counterclockwise direction in FIG. 4. As a result, the sheave 21 rotates in the clockwise direction, and as shown in FIG. 5, the protrusion 44 is pressed into the return lever 42.

Next, the operation will be described. When the lifting speed of the car 4 reaches the first overspeed (normally about 1.3 times the rated speed), the operation claw 37 switches the car stop by the rotation of the fly weight 25 by centrifugal force. The switch lever 28a is rotated in contact with the switch lever 28a of (28). As a result, the switch 28 is operated to cut off the power supply of the drive device 2 and the elevator car is stopped by the brake device of the drive device 2.

Moreover, even if the drive device 2 stops, for example, when the main rope 3 is broken, it descends continuously without stopping the cage | basket | car 4, and the descending speed of the cage | basket | car 4 is 2nd. When the overspeed (typically about 1.4 times the rated speed) is reached, the fly weight 25 further rotates, and the rotation amount of the trip lever 72 also increases with the trip lever 72 and the claw. (29) The fitting falls out. As a result, the claw 29 is rotated by the spring force of the drag spring 74 to be engaged with the teeth of the ratchet 30. Then, the ratchet 30 is rotated slightly in the counterclockwise direction of FIG. 12 together with the sheave 21.

By rotation of the ratchet 30, the arm 31 is rotated counterclockwise in FIG. 12, the shoe 32 abuts the governor rope 11, and the shoe 32 is driven by the rope grip spring 36. Is pressed down on the governor rope 11 so that the governor rope 11 is braked. When the circulation of the governor rope 11 is stopped, the lever 12 is operated by the car 4 continuing to descend, and the emergency stop device 7 operates.

Next, the return operation after the operation of the emergency stop device 7 and the governor 9 will be described. In the return operation, first, the car 4 is slightly raised to release the braking state to the car guide rail 6 of the emergency stop device 7. Afterwards, when the car 4 is raised further, the sheave 21 rotates clockwise in FIG. 12 through the governor rope 3, and the engagement between the claw 29 and the ratchet 30 is lost, and the ratchet 30 also rotates clockwise in the figure to return to the original position. As a result, the arm 31 returns to its original position, and the shoe 32 falls off the governor rope 11.

Thereafter, the elevator 4 is raised to a position where the ceiling of the car 4 can enter the ceiling, and then the door 14 of the platform is opened from the platform 13 on the top floor, and the worker opens the door 4. Get on The return operation is completed by reaching the governor 9 from the car 4 and engaging the claw 29 with the trip lever 72.

On the other hand, the position of the cage | basket | car 4 when the governor 9 made the 2nd overspeed operation is the vicinity of the platform 13 of the uppermost floor, From that position, the door 14 of the platform is opened, and the cage | basket | car 4 is opened. If it is not possible to enter the ceiling, the door 14 of the landing is opened, and the base end of the return wire 41 at the lower part of the threshold is taken out to the landing side, and the base end of the return wire 41 is taken out from the tube 46. As a result, on the side of the governor 9, the return lever 42 swings against the return spring 45 in the clockwise direction of FIGS. 12 to 14, and the projection 44 is pressed by the return lever 42. Then, the claw 29 is rotated in the clockwise direction of FIGS. 12 to 14 against the torsion spring 73 to be engaged with the trip lever 72.

In addition, when the return lever 42 and the protrusion 44 are not in the positional relationship which opposes, first, after moving the return lever 42 to a return position, the sheave 21 is rotated clockwise. Thereby, the projection 44 which rotates integrally with the sheave 21 is pressed against the return lever 42 in a return position.

However, when the cage | basket | car 4 is in the outermost part of the hoistway 1, since the sheave 21 is rotated clockwise, the cage | basket | car 4 cannot be raised. In that case, the roller 92 which abuts on the sheave 21 by the movement of the arm 91 rocked to the rotation position by pulling out the return wire 41 is driven in the counterclockwise direction of FIG. Then, the sheave 21 is forcibly rotated in the clockwise direction, and as shown in FIG. 5, the projection 44 is pressed against the return lever 42 in the return position to trip the claw 29. It can be hooked up to the lever 72.

Therefore, even when the cage | basket | car 4 is in the outermost part of the hoistway 1, the return work of the governor 9 can be performed easily from outside the hoistway 1, and the workability of a return work | work can be improved.

The method of driving the roller 92 may be any method such as an electric method such as a motor or a method of pulling a wire wound in advance.

Next, an example of the storage method of the return wire 41 is demonstrated with reference to FIGS. 6-8. In this example, the base end of the boarding point 13 side of the return wire 41 is housed in the boarding point position indicator 47. The illustration of the internal structure of the boarding point position indicator 47 is omitted.

The boarding point position indicator 47 has the case 48 which accommodated the indicator main body (not shown), and the front cover 50 connected so that opening and closing with the case 48 via the some link 49 is possible. The proximal end of the return wire 41 is housed in the case 48, and can be taken out to the landing 13 by opening the front cover 50.

When operating the return wire 41, the operation mechanism 51 is attached to the base end of the return wire 41 and the tube 46. As shown in FIG. When returning the governor 9, the front cover 50 of the boarding point position indicator 47 is opened, and the operation mechanism 51 is attached to the base end of the return wire 41 and the tube 46. As shown in FIG. And the base end of the return wire 41 is taken out with respect to the tube 46. FIG.

In this example, since the base end of the returning wire 41 is accommodated in the landing position indicator 47 so that it can be easily taken out from the landing 13 side, the returning wire 41 is not opened without opening the door 14 of the landing. ), The workability of the return operation can be further improved.

In addition, in this example, although the base end of the return wire 41 was accommodated in the boarding point position indicator 47, you may store it in a boarding point push button device (not shown).

Next, another example of the storing method of the return wire 41 will be described with reference to FIGS. 9 and 10. In the above-mentioned example, although the base end of the return wire 41 was accommodated in the boarding point position indicator 47, in the example of FIG. 9 and FIG. 10, the return wire 41 is behind the wall part 15 of the boarding point 13. ) Proximal end is arranged. When operating the return wire 41, the operation mechanism 53 is inserted from the gap between the door 13 of the landing and the three-way frame 52 to engage the operation mechanism 53 with the return wire 41. Let's do it. The other parts are configured similarly to the first embodiment.

Thus, even when the base end part of the return wire 41 is arrange | positioned behind the wall part 15, the return wire 41 can be operated easily with the door 14 of a boarding point closed.

In addition, in the above-mentioned example, although the return lever 42 was rocked through the return wire 41, for example, the electromagnetic actuator 54 is connected to the return lever 42, and this actuator 54 is connected. The wiring 55 for manipulating operation may be extended to the landing board 13 so as to operate remotely. The actuator 54 may be remotely operated by radio.

Moreover, in the above-mentioned example, although the return lever 42 which rocked and rotated the claw 29 was shown, the return lever 42 may be linearly displaced.

In addition, in the above example, the case where the governor 9 is arrange | positioned at the upper part in the hoistway 1 was demonstrated, For example, even if it installs in a pit, this invention can be applied and a worker The return work can be easily performed from the landing side without lowering the pit.

As described above, the elevator governor according to the present invention can perform the return operation of the governor from outside the hoistway even when the car is at the top of the hoistway.

Claims (6)

Sheaves installed in the hoistway, the governor rope for operating the emergency stop device is wound and rotates according to the lifting speed of the car, A fly weight provided on the sheave and rotated by centrifugal force by rotation of the sheave; A balance spring biasing the fly weight in a direction against centrifugal force, A ratchet rotatably installed about the sheave axis of the sheave; A trip lever rotatably installed on the sheave and rotated by rotation of the fly weight; It is rotatably mounted to the sheave, and is normally engaged with the trip lever, and when the descending speed of the car reaches a preset overspeed, the engagement with the trip lever is released, and the ratchet is engaged with the ratchet. And a claw for rotating the ratchet in the same direction as the sheave, A shoe for braking the governor rope when the ratchet rotates in the same direction as the sheave; A return lever configured to be displaceable between the normal position and the return position, and shifted from the normal position to the return position to rotate the claw and engage the trip lever; Operating means for displacing the return lever by remote operation; Even when the car is stopped, the sheave is moved to the position of the return lever by forcibly rotating the sheave in the same direction as the direction of rotation when the car is operating in the ascending direction. An elevator governor, comprising a rotating means. The method according to claim 1, An rotating governor is provided with the roller which rotates the said sheave when it contacts a sheave, and the arm which can displace the position of a said roller between a normal position and a return position. The method according to claim 1 or 2, An arm governor has a return spring biased to a normal position and a return wire. The method according to claim 3, An elevator governor, wherein the proximal end of the return wire is accommodated in the landing position indicator so as to be taken out of the landing. The method according to claim 3, An elevator governor, wherein the proximal end of the return wire is arranged behind the wall of the landing and can be operated through a gap between the landing door and the three-way frame. The method according to any one of claims 3 to 5, An elevator governor, wherein the return spring or the return wire is the same as the arm and the operation means.

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