KR100881503B1 - Speed governor device of elevator - Google Patents

Abstract

On the base fixed to the car, the sheave shaft is freely supported by rotation. The governor sheave in which the governor rope wound up and down in the hoistway was wound in the hoistway. The governor sheave is provided with a flyweight which is displaced from the normal position to the trip position by the centrifugal force by the rotation of the governor sheave. The sheave shaft is provided with an operation member that can be displaced in the axial direction of the sheave shaft. The normal position of the flyweight is adjusted by the displacement with respect to the sheave axis of the operation member. In the hoistway, a cam member inclined with respect to the direction in which the car is moved is provided. The operation force transmission member for displacing the operation member is provided in the car. The operation force transmission member has an engagement portion that engages with the operation member with respect to the axial direction of the sheave axis, and a driven portion that is connected to the engagement portion and guided along the cam member by the movement of the car.

Description

Speed governor device of elevator {SPEED GOVERNOR DEVICE OF ELEVATOR}

The present invention relates to an elevator governor device having a governor sheave rotated with movement of an elevator car.

In the conventional elevator governor, the flyweight provided in the governor sheave is rotated by the centrifugal force by the rotation of the governor sheave in order to detect that the speed of the car has reached a predetermined overspeed. There is something. The car is equipped with an emergency stop device for preventing the car from falling. The governor rope is wound around the governor sheave connected to the emergency stop device. Therefore, the governor sheave is rotated at a speed corresponding to the speed of the car.

In this conventional elevator governor, when the rotation speed of the governor sheave becomes the first overspeed, the car stop switch is activated by the rotation of the flyweight. By the operation of the car stop switch, the power supply of the drive device of the elevator is cut off and the car is stopped by the brake device of the drive device. When the rotational speed of the governor sheave reaches the second overspeed, the flyweight is further rotated, and the braking mechanism for braking the governor rope is operated. The governor rope is braked by the operation of the braking mechanism, and the emergency stop device is operated by braking the governor rope (see Patent Document 1).

Patent Document 1: Japanese Patent Application Laid-Open No. 2001-106454

Problems to be Solved by the Invention

However, in such a conventional elevator governor, the setting of the first and second overspeeds cannot be adjusted during operation of the elevator. Therefore, the overspeed set in the governor becomes constant regardless of the position of the car. As a result, the governor cannot normally be operated until the speed of the car becomes extremely high even when the car moves in the upper and lower portions of the hoistway where the speed of the car becomes low. Therefore, it is impossible to reduce the size of the shock absorber for cushioning the impact on the car and to reduce the depth dimension of the pit portion of the hoistway provided with the shock absorber. Moreover, the overhead dimension for allowing the car to pass or jump also becomes large, and the overhead dimension cannot be reduced.

This invention is made | formed in order to solve the above subjects, and an object of this invention is to obtain the elevator governor apparatus which can easily and more reliably adjust the setting overspeed for making an emergency stop of a car.

Means for solving the problem

The governor device of the elevator according to the present invention is rotatable integrally with a sheave shaft and a sheave shaft which are rotatably supported on a base mounted on a car, and a governor rope pulled up and down in a hoistway is wound, and the elevator It is provided in the governor sheave rotated by the movement of the compartment, the governor sheave, and can be displaced with respect to the governor sheave between a normal position and a trip position located radially outward of the governor sheave from the normal position. With respect to the braking mechanism and the sheave shaft, which are mounted on a car, a fly weight which is displaced from a normal position to a trip position by centrifugal force due to the rotation of the governor sheave, and which is operated by the displacement of the fly weight to a trip position to restrain the governor rope. It is possible to rotate in the circumferential direction of the governor sheave and by rotating about the sheave axis An adjustment lever for displacing the weight and adjusting its normal position, an operation member that can be displaced in the axial direction of the sheave axis with respect to the sheave axis, and an operation member and the adjustment lever that interlock with each other to convert the displacement of the operation member into rotation of the adjustment lever. The cam member installed in the mechanism, the hoistway and inclined with respect to the direction in which the car is moved, and the engaging portion engaged with the operation member with respect to the axial direction of the sheave axis, and the engaging portion, are connected to the engaging portion, and the cam member is moved by the movement of the car. It has a driven part guided according to this, Comprising: The engaging part is displaced by the guidance by the cam member of a follower part, and the operation force transmission member which displaces an operation member in the axial direction of a sheave axis is provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the elevator apparatus by Embodiment 1 of this invention.

FIG. 2 is a front view illustrating the governor of FIG. 1. FIG.

3 is a rear view illustrating the governor of FIG. 2.

4 is a partial cross-sectional view showing a main part of the governor of FIG. 3.

Fig. 5 is an exploded perspective view showing the main part of the governor of Fig. 3.

6 is a plan view of a main part of the elevator apparatus of FIG. 1.

FIG. 7 is a side view of an essential part of the elevator apparatus of FIG. 6. FIG.

It is a principal part front view which shows the lower part of the cage | basket | car of FIG.

9 is a cross-sectional view taken along the line IX-IX of FIG. 6.

10 is a graph showing the relationship between the speed of the car, the first overspeed and the second overspeed, and the distance from the terminal to the car in the normal operation of the elevator of FIG.

11 is a sectional view of principal parts showing a governor device of an elevator according to Embodiment 2 of the present invention.

It is a principal part block diagram which shows the governor apparatus when it sees along the radial direction of the governor sheave of FIG.

Preferred Mode for Carrying Out the Invention

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described with reference to drawings.

Embodiment 1.

FIG. 1: is a block diagram which shows the elevator apparatus by Embodiment 1 of this invention. In the figure, the drive device 2 is provided in the upper part of the hoistway 1. The drive device 2 has a drive sheave 2a. The main rope 3 is wound around the drive sheave 2a. In the hoistway 1, the car 4 and the counterweight 5 are suspended by the main rope 3. In addition, in the hoistway 1, a pair of car guide rails 6 for guiding the lifting and lowering of the car 4 are provided, and a pair of counterweight guide rails for guiding the lifting and lowering of the counterweight 5 (shown). Not installed).

The car 4 is equipped with a pair of emergency stop devices 7 for forcibly stopping the movement of the car 4. In addition, the car 4 has a governor 8 for detecting an overspeed of the car 4 and operating each emergency stop device 7, and a return pulley freely rotated in the vicinity of the governor 8. (9) is mounted. Each emergency stop device 7, the governor 8, and the return pulley 9 are arrange | positioned in the lower part of the cage | basket | car 4. As shown in FIG.

The governor rope 10 pulled up and down in the hoistway 1 is wound around the governor 8 and the return pulley 9. The upper fixing member 11 is fixed to the upper part of the cage guide rail 6, and the lower fixing member 12 is fixed to the lower portion of the cage guide rail 6. The upper end of the governor rope 10 is connected to the upper fixing member 11 through a spring (elastic body), and the lower end of the governor rope 10 is connected to the lower fixing member 12 through a spring (elastic body). . That is, the governor rope 10 is wound from the lower fixing member 12 in the order of the governor 8 and the return pulley 9 to reach the upper fixing member 11. Tension is given to the governor rope 10 by the elastic force of each spring.

FIG. 2 is a front view illustrating the governor 8 of FIG. 1. 3 is a rear view which shows the governor 8 of FIG. In the figure, the base 13 is fixed to the lower part of the car 4. Rotation is supported freely by the sheave shaft 14 which extends horizontally to the base stand 13. The governor sheave 15 on which the governor rope 10 is wound is fixed to the sheave shaft 14. The governor sheave 15 is rotated integrally with the sheave shaft 14.

On the side surface of the governor sheave 15, a pair of flyweights 17 rotatable around the pin 16 are provided. Each flyweight 17 is displaceable between the normal position and the trip position located radially outward of the governor sheave 15 from the normal position by the rotation around the pin 16. . Each flyweight 17 is rotated from a normal position to a trip position by centrifugal force by the rotation of the governor sheave 15. Each flyweight 17 is connected to each other by the link 18.

An operation pawl 19 is fixed to one end of one flyweight 17. The actuating pawl 19 is displaced radially outward of the governor sheave 15 by the rotation of the flyweight 17 from the normal position to the trip position.

The base 13 is equipped with a car stop switch 20 for stopping power supply to the drive device 2 and for operating a brake device (not shown) of the drive device 2. . The switch 20 for stopping a car has a switch main body 21 and a switch lever 22 provided in the switch main body 21 and operated by the operation pawl 19. The switch lever 22 is operated by the actuating pawl 19 when the flyweight 17 is rotated to the stop operating position located between the normal position and the trip position. In addition, when the speed of the cage | basket | car 4 reaches the 1st overspeed (normally about 1.3 times of rated speed), the flyweight 17 rotates to a stop operation position, and the speed | rate of the cage | basket | car 4 is When the second overspeed (usually about 1.4 times the rated speed) is reached, it is rotated to the trip position.

The governor sheave 15 is provided with a trip lever 24 which can be rotated about a shaft 23 parallel to the pin 16. A part of the trip lever 24 is in contact with the one flyweight 17. The trip lever 24 is rotated about the shaft 23 by the rotation of the flyweight 17. The torsion spring (not shown) which presses the trip lever 24 in the direction which abuts the flyweight 17 is provided in the shaft 23.

The base 13 is provided with a ratchet 25 rotatable about the sheave shaft 14 (FIG. 3). The ratchet 25 is rotated with respect to the sheave shaft 14. A plurality of teeth is provided on the outer circumferential portion of the ratchet 25.

On one pin 16, an engagement pawl 26 that is selectively engaged with either the trip lever 24 or the ratchet 25 is rotatably provided. The engagement pawl 26 is pressurized in the direction to engage the ratchet 25 by a pulling spring not shown. The engagement pawl 26 is opened from the latch 25 in engagement with the trip lever 24 when the flyweight 17 is in the normal position. In addition, when the flyweight 17 is rotated to the trip position, the engagement pawl 26 is disengaged from the trip lever 24, and is rotated by the spring force of the pulling spring to engage the ratchet 25.

In addition, the arm 27 is rotatably mounted on the base 13. The arm 27 is rotatably attached to the shoe 28 pressurized by the governor sheave 15 via the governor rope 10. The spring shaft 29 is displaced through the tip portion 27a of the arm 27 so as to be displaceable. At one end of the spring shaft 29, a connection link 30 is pivotally connected to the ratchet 25. The spring bearing member 31 is provided in the other end of the spring shaft 29. Between the distal end portion 27a of the arm 27 and the spring bearing member 31, a pressing spring 32 for pressing the shoe 28 with the governor rope 10 is provided.

The ratchet 25 is rotated in the same direction as the governor sheave 15 by engaging the engagement pawl 26 when the governor sheave 15 is rotated. As a result, the arm 27 is rotated in the direction in which the shoe 28 is pressed by the governor sheave 15. The governor rope 10 is restrained by the shoe 28 being pressed to the governor sheave 15 through the governor rope 10.

In addition, the brake mechanism 33 for restraining the governor rope 10 includes a trip lever 24, a ratchet 25, an engagement pawl 26, an arm 27, a shoe 28, and a spring shaft 29. ), A connection link 30, a spring bearing member 31, and a pressure spring 32.

The sheave shaft 14 is provided with an adjustment lever 34 that can rotate in the circumferential direction of the governor sheave 15 with respect to the sheave shaft 14. The adjustment lever 34 is provided in the outer periphery of the lever main body 35 and the lever main body 35 including the cylindrical part 35a through which the sheave shaft 14 passed, and the circumferential direction of the governor sheave 15 is carried out. And a rotation restricting portion 37 provided with an elongated hole 36 extending therebetween, and a lever piece 38 provided on the outer circumferential portion of the lever main body 35 and extending radially outward of the lever main body 35.

On the side surface of the governor sheave 15, a pin 39 through the long hole 36 is fixed. The pin 39 can slide the inside of the long hole 36 in the longitudinal direction of the long hole 36. The rotation restriction part 37 slides with respect to the pin 39 by rotation with respect to the sheave shaft 14 of the adjustment lever 34. Thereby, the rotation amount of the adjustment lever 34 is regulated.

The lever piece 38 is displaced in the circumferential direction of the governor sheave 15 by the rotation of the lever main body 35. The connecting body 40 which connects the flyweight 17 and the adjustment lever 34 is connected between the other end part of one flyweight 17 and the lever piece 38. The linking member 40 is provided on the stretchable elastic rod 41 and the elastic rod 41 connected between the flyweight 17 and the lever piece 38, and the centrifugal force by the rotation of the governor sheave 15 is achieved. It has the equilibrium spring 42 which presses the flyweight 17 in the opposite direction.

The flyweight 17 and the adjustment lever 34 are interlocked with each other by the coupling body 40. Therefore, the normal position of the flyweight 17 can be adjusted in the direction approaching or away from the trip position by the rotation of the adjustment lever 34. That is, the rotation angle (rotation distance) of the flyweight 17 until it displaces from a normal position to a trip position is adjustable by the adjustment lever 34. As shown in FIG. The magnitude | size of the 1st and 2nd overspeed for making emergency stop of the cage | basket | car 4 is adjustable by the rotation of the adjustment lever 34. FIG.

4 is a partial cross-sectional view showing a main part of the governor 8 of FIG. 3. 5 is an exploded perspective view showing the main part of the governor 8 of FIG. 3. The sheave shaft 14 is provided with the operation member 43 which can be displaced in the axial direction of the sheave shaft 14. The operation member 43 has a pipe portion 44 surrounding the sheave shaft 14 and a plate-shaped disk portion 45 provided at an outer circumferential portion of the pipe portion 44. The disk part 45 is arrange | positioned perpendicularly to the axis line of the sheave shaft 14.

Between the sheave shaft 14 and the lever main body 35, the interlock mechanism 46 which links the operation member 43 and the adjustment lever 34 is provided. The interlock mechanism 46 is configured to convert the displacement of the operation member 43 with respect to the sheave shaft 14 into a rotation with respect to the sheave shaft 14 of the adjustment lever 34. In this example, the interlock mechanism 46 displaces the operation member 43 in a direction closer to the governor sheave 15, so that the adjustment lever (in the direction away from the trip position) is adjusted. 34) to rotate the adjustment lever 34 in a direction in which the normal position of the flyweight 17 approaches the trip position by displacing the operation member 43 in the direction away from the governor sheave 15. It is supposed to be.

The interlock mechanism 46 is provided on the displacement body 47 integrated with the operation member 43 and the outer circumferential surface of the sheave shaft 14, and the displacement body 47 is displaced with respect to the sheave shaft 14. And the sheave shaft side spline portion 48, which is the first guide portion for rotating the displacement body 47 with respect to the sheave shaft 14, and the inner peripheral surface of the cylindrical portion 35a, and the displacement body 47 is provided. The lever side which rotates the cylindrical part 35a with respect to the displacement body 47 in the reverse direction to the rotation direction of the displacement body 47 by the sheave shaft side spline part 48 when displaced with respect to the sheave shaft 14. It has a spline part 49.

An inner gear spline portion 50 fitted to the sheave shaft side spline portion 48 is provided on the inner circumferential surface of the displacement body 47, and fitted to the lever side spline portion 49 on the outer circumferential surface of the displacement body 47. The external gear spline part 51 is provided. That is, the displacement body 47 is spline-coupled with the lever main body 35 and the sheave shaft 14, respectively. As a result, the displacement member 47 is displaceable while being rotated in the axial direction of the sheave shaft 14 with respect to the sheave shaft 14 and the cylindrical portion 35a.

Tooth traces of the sheave shaft side spline portion 48 and the lever side spline portion 49 are inclined with respect to the axial direction of the sheave shaft 14. That is, the sheave shaft side spline part 48 and the lever side spline part 49 become the spline part of an inclined tooth. Moreover, the inclination direction (torsion direction) of the tooth line of the sheave shaft side spline part 48 is reverse to the inclination direction (torsion direction) of the tooth line of the lever side spline part 49. Moreover, the sheave shaft side spline part The inclination angle (torsion angle) of the tooth line of 48 differs from the inclination angle (torsion angle) of the tooth line of the lever side spline part 49.

When the displacement body 47 is displaced in the axial direction of the sheave shaft 14 with respect to the sheave shaft 14, the displacement body 47 rotates with respect to the sheave shaft 14 and the displacement body of the cylindrical portion 35a. The rotation about (47) is performed simultaneously. The rotation direction with respect to the sheave shaft 14 of the displacement body 47, and the rotation direction with respect to the displacement body 47 of the cylindrical part 35a are mutually reversed. Therefore, when the displacement body 47 is displaced in the axial direction of the sheave shaft 14, the adjustment lever 34 has the rotation angle with respect to the sheave shaft 14 of the displacement body 47, and the cylindrical part 35a. Is rotated with respect to the sheave shaft 14 by an angle difference from the rotation angle with respect to the displacement body of.

6 is a plan view of a main part of the elevator apparatus of FIG. 1. 7 is a side view of an essential part of the elevator apparatus of FIG. 6. 8 is a principal part front view which shows the lower part of the cage | basket | car 4 of FIG. 9 is sectional drawing along the IX-IX line of FIG. In the figure, guide rails (cam members) 55 for operation inclined with respect to the car guide rails 6 are provided on the upper and lower portions of the hoistway 1. In other words, the operation guide rail 55 is inclined with respect to the moving direction of the car 4. The operation guide rail 55 is inclined with respect to the cage guide rail 6 so that the distance from the cage guide rail 6 in the horizontal direction becomes smaller as it approaches the end of the hoistway 1. Moreover, the operation guide rail 55 is being fixed with respect to the cage guide rail 6. In addition, the operation guide rail 55 is arrange | positioned out of the area | region of the cage | basket | car 4 when the lifting path 1 is vertically projected.

The base 13 is provided with a rotation shaft 56 extending in the vertical direction. The base 13 is supported by an operation arm (operation force transmission member) 57 that can be rotated around the rotation shaft 56. The operation arm 57 is provided in the rod-shaped arm part 58 provided in the rotational shaft 56 so that rotation is possible, and the one end part of the arm part 58, and has a disk part (with respect to the axial direction of the sheave shaft 14). A driven roller (following part) provided at the other end of the engaging portion 59 and the arm portion 58 engaged with the 45 and guided along the guide rail 55 for operation by the movement of the car 4 ( 60). The intermediate part of the arm part 58 is provided in the rotation shaft 56.

The operation arm 57 is rotated about the rotation shaft 56 by the driven roller 60 being guided along the operation guide rail 55. In this example, the engaging portion 59 is displaced in a direction closer to the governor sheave 15 by being guided in a direction away from the car guide rail 6, so that the driven roller 60 is driven. Is displaced in a direction away from the governor sheave 15 by being guided in a direction approaching the car guide rail 6.

The operation member 43 is displaced in the axial direction of the sheave shaft 14 by the displacement of the engaging portion 59 by the rotation of the operation arm 57. That is, the operation member 43 moves away from the governor sheave 15 when the car 4 is moved in the direction close to the end of the hoistway 1 in the upper and lower parts of the hoistway 1. And the car 4 is displaced in a direction closer to the governor sheave 15 when the car 4 is moved in a direction away from the end of the hoistway 1.

The base 13 is provided with a support shaft 61 parallel to the sheave shaft 14. The link member 62 is rotatably provided in the support shaft 61. The return pulley 9 is rotatably provided at the front end of the link member 62. The return pulley 9 is rotated about the return pulley shaft 63 extending horizontally. That is, the return pulley 9 is displaced with respect to the car 4 by the rotation of the link member 62 centering on the support shaft 61.

Each emergency stop device 7 is mounted on the emergency stop frame 64 fixed to the lower part of the car 4. Moreover, each emergency stop device 7 has the wedge 65 which can be folded with respect to the cage guide rail 6, and the gripper piece which guides the wedge 65 in the direction which fold | folds with the cage guide rail 6 ( gripper piece). Each emergency stop device 7 is operated by the wedge 65 contacting the car guide rail 6 and engaging between the gripper piece 66 and the guide rail 6. The movement of the car 4 is forcibly braked by the operation of each emergency stop device 7. In addition, the operation of each emergency stop device 7 is released by moving the wedge 65 away from the car guide rail 6.

In the emergency stop frame 64, the interlocking shaft 67 for interlocking the emergency stop devices 7 with each other is freely pivoted. The interlocking shaft 67 is arranged in parallel with a straight line connecting the emergency stop devices 7. Emergency stop levers 68 are provided at both ends of the interlock shaft 67 for displacing the wedges 65 in the direction in which the car guide rails 6 are folded. One end of the emergency stop lever 68 is fixed to the interlock shaft 67. As a result, the emergency stop levers 68 are rotated around the axis of the interlocking shaft 67 in synchronization with each other. At the other end of each emergency stop lever 68, a wedge 65 is slidably provided. Each wedge 65 engages between the gripper piece 66 and the guide rail 6 by rotating upward of the emergency stop lever 68.

The connection member 69 fixed to the link member 62 is rotatably connected by the pin 70 to the intermediate part of the one emergency stop lever 68. Thereby, each emergency stop lever 68 is displaced in the direction which each wedge 65 folds to the cage guide rail 6 by the rotation of the link member 62. As shown in FIG. Each emergency stop device 7 is operated by rotating the link member 62 upwards. In addition, the operation of each emergency stop device 7 is released by rotating the link member 62 downward.

Moreover, the elevator control apparatus (not shown) which controls the operation of an elevator is provided in the hoistway 1. Moreover, the drive device 2 is provided with an encoder (not shown) which is a detection unit for detecting the position and speed of the car 4. The encoder generates a signal in accordance with the rotation of the drive sheave 2a. And the generated signal is sent to an elevator control apparatus. The elevator control device is configured to control the operation of the elevator based on the information from the encoder.

FIG. 10 is a graph showing the relationship between the speed of the car 4, the first overspeed and the second overspeed, and the distance from the terminal floor to the car 4 in the normal operation of the elevator in FIG. In the drawing, the elevator 4 moves at a constant speed between the acceleration / deceleration section in which the car 4 is accelerated and decelerated in the vicinity of one and the other end floors, and each acceleration / deceleration section. There is a constant speed section.

The speed, 1st overspeed, and 2nd overspeed of the cage | basket | car 4 at the time of normal operation are normal speed pattern 71 and the 1st overspeed pattern 72 by the change of the position of the cage | basket | car 4 ) And the second overspeed pattern 73.

The second overspeed pattern 73 is larger than the first overspeed pattern 72, and the first overspeed pattern 72 is larger than the normal speed pattern 71. In addition, the normal speed pattern 71, the first overspeed pattern 72, and the second overspeed pattern 73 each have a constant value in the constant speed section and continuously decrease toward the end layer in the acceleration / deceleration section. It is set.

The speed pattern 71 is normally set in the elevator control apparatus. The elevator control device is configured to control the operation of the elevator so that the car 4 moves in the hoistway 1 in accordance with the normal speed pattern 71.

The operation guide rail 55 is provided in the acceleration / deceleration section. Moreover, the operation guide rail 55 guides the driven roller 60 so that the 1st and 2nd overspeed may become small continuously as the cage | basket | car 4 approaches a terminal layer in the acceleration / deceleration range. have. As a result, the first overspeed changes in accordance with the first overspeed pattern 72, and the second overspeed changes in accordance with the second overspeed pattern 73.

Next, the operation will be described. When the car 4 is moving in the constant speed section, the driven roller 60 is fixed at a predetermined position with respect to the car 4, and each of the first overspeed and the second overspeed The size of is constant regardless of the position of the car 4.

When the car 4 is moving in the acceleration / deceleration section toward the terminal layer, in the direction in which the driven roller 60 approaches the car guide rail 6 by the guide of the operation guide rail 55. It is displaced according to the position of the car 4. Thereby, the operation arm 57 is rotated about the rotation shaft 56, and the engaging part 59 is displaced according to the displacement amount of the driven roller 60 in the direction away from the governor sheave 15. As shown in FIG. Thereby, the operation member 43 is displaced with respect to the sheave shaft 14 in the direction away from the governor sheave 15 in accordance with the displacement amount of the engaging portion 59.

When the operation member 43 is displaced in the direction away from the governor sheave 15, the adjustment lever 34 is adapted to the displacement amount of the operation member 43 in the direction in which the normal position of the flyweight 17 is displaced outward in the radial direction. Is rotated accordingly. As a result, the normal position of the flyweight 17 approaches the stop operation position and the trip position by the amount corresponding to the amount of rotation of the adjustment lever 34, and the magnitudes of the first and second overspeeds are increased by the car 4. It becomes smaller depending on the position of.

When the car 4 is moving in the acceleration / deceleration section in a direction away from the terminal layer, the operation opposite to the above is made, and the magnitude of the first and second overspeeds depends on the position of the car 4. Grows

In normal operation, the car 4 moves in the hoistway 1 in accordance with the normal speed pattern 71 by the control of the elevator control apparatus. At this time, the flyweight 17 receives the centrifugal force of the grade which does not displace to the stop operation position by rotation of the governor sheave 15.

For some reason, when the speed of the car 4 further rises and the speed of the car 4 reaches the value of the 1st overspeed pattern 71, the flyweight 17 rotates to a stop operation position. The switch lever 22 is operated by the actuating pawl 19. Thereby, the electric power feeding to the drive apparatus 2 is stopped by control of an elevator control apparatus, a brake apparatus is operated, and the cage | basket | car 4 is stopped.

For example, even when the drive device 2 stops, such as when the main rope 3 breaks, the car 4 moves without stopping, and the speed of the car 4 becomes the second overspeed pattern. When the value 73 is reached, the flyweight 17 is further rotated by the centrifugal force by the rotation of the governor sheave 15 to reach the trip position. As a result, the engagement pawl 26 is engaged with the trip lever 24 and rotated so that the engagement pawl 26 is engaged with the ratchet 25. As a result, the ratchet 25 is slightly rotated in the rotational direction of the governor sheave 15.

The rotational force of the ratchet 25 is transmitted to the arm 27 via the connection link 30, the spring shaft 29, the spring bearing member 31, and the pressure spring 32. As a result, the arm 27 is rotated, and the shoe 28 is pushed onto the governor rope 11 by the pressure spring 32 after contacting the governor rope 10. As a result, the governor rope 10 is restrained between the governor sheave 15 and the shoe 28.

As the car 4 continues to descend in the state in which the governor rope 10 is restrained, the governor rope 10 is pulled downward and the return pulley 9 is displaced upward with respect to the car 4. As a result, the link member 62 is rotated upward with respect to the car 4.

When the link member 62 is rotated upward with respect to the car 4, each emergency stop lever 68 fixed to the common interlocking shaft 67 is rotated upward at the same time, and each wedge 65 is gripper. Displaced upward with respect to the piece 66. Thereby, each wedge 65 engages between the cage guide rail 6 and the gripper piece 66, and each emergency stop device 7 is operated. Thereby, the braking force is given to the cage | basket | car 4, and the cage | basket | car 4 is forcibly stopped.

At the time of return, the operation of each emergency stop device 7 is released by releasing the restraint of the governor rope 10 and raising the car 4.

In such a governor device of the elevator, an operation guide rail 55 inclined with respect to the direction in which the car 4 is moved is provided in the hoistway 1, and the operation arm 57 is formed on the sheave shaft 14. A driven roller connected to the engaging portion 59 engaged with the operation member 43 and the engaging portion 59 with respect to the axial direction and guided along the operation guide rail 55 by the movement of the car 4. (60), the engaging portion (59) is displaced by the guide by the guide rail (55) for operation of the driven roller (60), thereby displacing the operation member (43) in the axial direction of the sheave shaft (14). Since the magnitude | size of the 1st and 2nd overspeed is adjusted, even if the governor sheave 15 is rotating, the magnitude | size of the 1st and 2nd overspeed is easily made according to the position of the cage | basket | car 4. I can adjust it. Moreover, since the operation member 43 is displaced by the moving energy of the car 4, the magnitude | size of the 1st and 2nd overspeed can be adjusted more reliably also at the time of a power failure.

Therefore, by adjusting the installation position and the inclination direction of the operation guide rail 55, in the acceleration / deceleration section provided near the terminal layer, the magnitudes of the first and second overspeeds can be reduced toward the terminal layer. In the constant speed section, the magnitudes of the first and second overspeeds can be made constant. Therefore, in the vicinity of the terminal layer, the first and second overspeeds can be made smaller than the constant speed section, and the braking distance at the time of emergency stop of the car 4 can be shortened. Thereby, the shock absorber provided in the pit part of the hoistway 1 can be miniaturized, and the depth dimension of a pit part can be made small. In addition, it is possible to reduce the size of the overhead for allowing the car 4 to pass or jump. That is, the dimension of the height direction of the hoistway 1 can be reduced.

In addition, the car 4 is operated by the return pulley 9 which can be displaced with respect to the car 4 in which the governor rope 10 is wound, and the displacement of the return pulley 9 with respect to the car 4. A pair of emergency stop devices 7 are mounted, and the return pulley 9 is displaced relative to the car 4 by restraining the governor rope 10 by the braking mechanism 33. The operation of the governor 8 can be reliably transmitted by each emergency stop device 7, and each emergency stop device 7 can be operated more reliably.

Moreover, the interlock mechanism 46 is provided in the displacement body 47 integrally formed with the operation member 43, and the outer peripheral surface of the sheave shaft 14, and the displacement body 47 displaces with respect to the sheave shaft 14. When the displacement body 47 is rotated, the sheave shaft-side spline portion 48 that rotates the sheave shaft 14 and the inner circumferential surface of the cylindrical portion 35a of the adjustment lever 34 are disposed to provide the displacement body 47. Lever rotates the cylindrical portion 35a with respect to the displacement member 47 in a direction opposite to the rotational direction of the displacement member 47 by the sheave shaft side spline portion 48 when the shaft is displaced with respect to the sheave shaft 14. Since it has the side spline part 49, a predetermined resistance force is made by the sheave shaft side spline part 48 and the lever side spline part 49 with respect to the displacement of the displacement body 47 in the axial direction of the sheave shaft 14. The position of the displacement body 47 with respect to the sheave shaft 14 is shifted by centrifugal force or vibration caused by the rotation of the governor sheave 15. You can prevent it.

Moreover, the displacement body 47 is splined with respect to the sheave shaft 14 by the sheave side spline part 48 in which a tooth line was inclined with respect to the axial direction of the sheave shaft 14, and a tooth line has a sheave shaft ( Since it is splined with respect to the cylindrical part 35a by the lever side spline part 49 inclined with respect to the axial direction of 14), by the displacement of the displacement body 47 in the axial direction of the sheave shaft 14, The displacement body 47 can be rotated with respect to the sheave shaft 14 more reliably, and the cylindrical part 35a can be rotated with respect to the displacement body 47 more reliably.

In addition, in the above example, although the coupling | bonding with respect to the cylindrical part 35a of the displacement body 47 and the sheave shaft 14 is spline coupling together, the displacement body 47 in the axial direction of the sheave shaft 14 is carried out. It is not necessary to limit to spline coupling as long as the coupling enables the displacement body 47 to be rotated by the displacement of.

Embodiment 2.

11 is a sectional view of principal parts showing a governor device of an elevator according to Embodiment 2 of the present invention. 12 is a principal part block diagram which shows the governor apparatus when it sees along the radial direction of the governor sheave 15 of FIG. In the figure, the slide 47 is fixed to the displacement body 47 in a state where the slide pin 81 extending in the radial direction of the governor sheave 15 penetrates. The slide pin 81 has the 1st protrusion part 81a which protruded from the inner peripheral surface of the displacement body 47, and the 2nd protrusion part 81b which protruded from the outer peripheral surface of the displacement body 47. As shown in FIG.

On the outer circumferential surface of the sheave shaft 14, a sheave shaft side groove portion 82 in which the first projection 81a is slidably inserted is provided. The sheave shaft side groove 82 is inclined with respect to the axial line direction of the sheave shaft 14. The first protrusion 81a is guided along the sheave shaft side groove 82 by the displacement of the displacement body 47 in the axial direction of the sheave shaft 14. As a result, the displacement body 47 is displaced in the axial direction of the sheave shaft 14 while being rotated with respect to the sheave shaft 14.

On the inner circumferential surface of the cylindrical portion 35a, a lever side groove portion 83 in which the second protrusion 81b is slidably inserted is provided. The lever side groove portion 83 is inclined with respect to the axial direction of the sheave shaft 14 in the direction opposite to the inclination direction of the sheave shaft side groove portion 82. The second protrusion 81b is guided along the lever side groove 83 by the displacement of the displacement body 47 in the axial direction of the sheave shaft 14. The cylindrical part 35a is rotated with respect to the displacement body 47 by the displacement of the sheave shaft 14 to the axial direction in the opposite direction to the rotation direction of the displacement body 47 by the sheave shaft side groove part 82. do.

The inclination angle of the sheave shaft side groove portion 82 with respect to the axial direction of the sheave shaft 14 differs from the inclination angle of the lever side groove portion 83 with respect to the axial direction of the sheave shaft 14. When the displacement body 47 is displaced in the axial direction of the sheave shaft 14 with respect to the sheave shaft 14, the displacement body 47 rotates with respect to the sheave shaft 14 and the displacement body of the cylindrical portion 35a. The rotation about (47) is performed simultaneously. The rotation direction with respect to the sheave shaft 14 of the displacement body 47, and the rotation direction with respect to the displacement body 47 of the cylindrical part 35a are mutually opposite. Therefore, when the displacement body 47 is displaced in the axial direction of the sheave shaft 14, the adjustment lever 34 has the rotation angle with respect to the sheave shaft 14 of the displacement body 47, and the cylindrical part 35a. Is rotated with respect to the sheave shaft 14 and the governor sheave 15 by an angular difference with the rotational angle with respect to the displacement body of.

Moreover, the interlocking mechanism 84 which links the operation member 43 and the adjustment lever 34 mutually is the displacement body 47, the slide pin 81, the sheave shaft side groove part 82, and the lever side groove part 83. Has) The other configuration is the same as that in the first embodiment.

In such an elevator apparatus, the sheave shaft side groove portion 82 which rotates the displacement body 47 with respect to the sheave shaft 14 by guiding the first protrusion 81a protruding from the inner circumferential surface of the displacement body 47 is provided. A lever side groove portion 83 provided on the sheave shaft 14 and rotating the cylindrical portion 35a with respect to the displacement member 47 by guiding the second projection portion 81b protruding from the outer circumferential surface of the displacement member 47. ) Is provided on the inner circumferential surface of the cylindrical portion 35a, the configuration of the interlock mechanism 84 can be simplified, and the manufacturing cost can be reduced.

In addition, although the sheave shaft side groove part 82 is provided in the sheave shaft 14 in the above example, the sheave shaft side groove part 82 may be made into a long hole. In addition, although the lever side groove part 83 is provided in the cylindrical part 35a in the said example, you may use the lever side groove part 83 as a long hole.

Moreover, in each said embodiment, although the operation guide rail 55 is provided only in the acceleration / deceleration speed section, and the driven roller 60 is not guided by a rail in a constant speed section, the cage guide rail 6 is carried out. Parallel guide rails extending in parallel to the constant speed section, and parallel guide when the car 4 is in the constant speed section when the car 4 is in the acceleration / deceleration section. Depending on the rail, you may guide the driven roller 60, respectively.

Thus, this invention can be utilized for the governor apparatus of an elevator which has a governor sheave rotated with movement of a cage | basket | car.

Claims (5)

Sheave shaft freely supported by rotation on the base mounted on the car, A governor sheave which is rotatable integrally with the sheave shaft and which is pulled up and down in a hoistway, and which is rotated in accordance with the movement of the car; It is provided in the governor sheave, and can be displaced with respect to the governor sheave between a normal position and a trip position located radially outward of the governor sheave from the normal position with respect to the governor sheave. Flyweight displaced from the normal position to the trip position by centrifugal force by A braking mechanism mounted on the car and operated by the displacement of the flyweight to the trip position to restrain the governor rope; An adjustment lever which is rotatable in the circumferential direction of the governor sheave with respect to the sheave shaft, and which adjusts the normal position by displacing the flyweight by rotating with respect to the sheave shaft; An operation member that is displaceable in the axial direction of the sheave axis with respect to the sheave axis, An interlock mechanism for interlocking the operation member and the adjustment lever with each other to convert displacement of the operation member into rotation of the adjustment lever; A cam member installed in the hoistway and inclined with respect to a direction in which the car is moved; and The cam member of the follower portion, having an engaging portion engaged with the operation member with respect to the axial direction of the sheave shaft, and a driven portion connected to the engaging portion and guided along the cam member by the movement of the car. The engagement portion is displaced by the guide by which the operation force transmission member displaces the operation member in the axial direction of the sheave axis. An overspeed governor device for an elevator, comprising: a. The method of claim 1, In the car, the governor rope is wound and operated by a return pulley which is displaceable with respect to the car and the displacement of the return pulley with respect to the car, forcibly stopping the movement of the car. Equipped with emergency stop for And said return pulley is displaced with respect to said car by restraining said governor rope by said braking mechanism. The method according to claim 1 or 2, The linkage mechanism is provided on an annular displacement body integral with the operation member and an outer circumferential surface of the sheave shaft, and when the displacement body is displaced with respect to the sheave shaft, the displacement body is moved to the sheave shaft. And a first guide portion which rotates relative to the lever and the adjustment lever, and when the displacement member is displaced with respect to the sheave shaft, the adjustment lever is moved in the opposite direction to the rotational direction of the displacement member by the first guide portion. An elevator governor device having a second guide portion which rotates with respect to the displacement body. The method of claim 3, wherein At least one of the first guide portion and the second guide portion includes a spline portion having a tooth line inclined with respect to the axial direction of the sheave axis, The displacer is splined to at least one of the adjustment lever and the sheave shaft by the spline portion. The method of claim 3, wherein At least one of the said 1st guide part and the said 2nd guide part consists of the groove part inclined with respect to the axial direction of the said sheave axis | shaft, The overspeed governor device of the elevator characterized by the above-mentioned displacement body is provided with the protrusion part inserted into the said groove part.

Images