CN1960930B - Elevator speed limiter - Google Patents

Abstract

A speed governor device of an elevator, wherein a pulley shaft is rotatably supported on a base fixed to a car. A governor pulley around which a governor rope vertically tensed in a hoistway is wrapped is installed on the base. A flyweight displaced from a normal position to a trip position by a centrifugal force caused by the rotation of the governor pulley is fitted to the governor pulley. An operation member displaceable in the axial direction of the pulley shaft is fitted to the pulley shaft. The normal position of the flyweight is adjusted by the displacement of the operation member relative to the pulley shaft. A cam member tilted to a car moving direction is installed in the hoistway. An operation force transmission member for displacing the operation member is installed in the car. The operation force transmission member comprises an engagement part engaged with the operation member in the axial direction of the pulley shaft and a driven part connected to the engagement part and guided along the cam member according to the movement of the car.

Description

Elevator speed limiter device

technical field

The present invention relates to a speed governor device of an elevator, which has a speed governor sheave that rotates with the movement of a car. the

Background technique

In the existing speed governor for elevators, in order to detect that the speed of the car has reached a predetermined overspeed, sometimes the flying pendulum arranged on the speed governor sheave is rotated by means of the speed governor sheave. Rotation by centrifugal force. An emergency stop device is installed on the car, and the emergency stop device is used to prevent the car from falling. A speed limiter rope is wound around the speed limiter sheave, and the speed limiter rope is connected with an emergency stop device. Thus, the speed governor sheave rotates at a speed corresponding to the speed of the car. the

In this conventional governor for an elevator, when the rotational speed of the governor sheave reaches the first overspeed, the car stop switch is actuated by the rotation of the flying pendulum. The power supply of the driving device of the elevator is cut off by the operation of the switch for stopping the car, and the car is stopped by the braking device of the driving device. In addition, when the rotation speed of the speed governor sheave reaches the second overspeed, the flying pendulum further rotates, so that the braking mechanism for braking the speed governor rope operates. The speed governor rope is braked by the operation of the braking mechanism, and the emergency stop device is activated by braking the speed governor rope (see Patent Document 1). the

Patent Document 1: Japanese Patent Publication No. 2001-106454

However, in such a conventional speed governor for an elevator, the setting of the first overspeed and the second overspeed cannot be adjusted while the elevator is running. Thus, the overspeed set in the speed governor is constant regardless of the position of the car. Therefore, even when the car moves between the upper part and the lower part of the hoistway where the car speed is usually low, the speed governor cannot be activated until the speed of the car reaches an extremely high speed. Therefore, the size of the buffer for buffering the impact of the car cannot be reduced, and the depth of the hoistway pit where the buffer is provided cannot be reduced. In addition, the roof height dimension for allowing the overshooting and jumping of the car also becomes large, and it is also impossible to reduce the roof height dimension.

Contents of the invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide an elevator overspeed governor device capable of easily and more reliably adjusting a set overspeed for making an emergency stop of a car. the

The speed governor device of the elevator of the present invention comprises:

a sheave shaft, which is rotatably supported on a base mounted on the car;

The speed governor sheave, which can rotate integrally with the sheave shaft, and the speed governor rope that is tensioned in the hoistway in the vertical direction is wound around the speed governor sheave, and the speed governor sheave corresponds to the car The movement of the box rotates;

a flying pendulum which is arranged on the governor sheave and which is movable relative to the governor sheave between a normal position and an unlocked position radially outward of the governor sheave compared to the normal position, the The flying pendulum moves from the normal position to the unlocked position by means of the centrifugal force generated by the rotation of the speed governor sheave;

Braking mechanism, which is installed on the car and acts by the movement of the flying pendulum to the unlocking position, thereby constraining the speed limiter rope;

Adjusting rod, which can rotate along the circumferential direction of the speed governor sheave relative to the sheave shaft, and the adjusting rod moves the flying pendulum by rotating relative to the sheave shaft to adjust the normal position of the flying pendulum;

An operating part that can move relative to the sheave shaft along the axis of the sheave shaft;

A linkage mechanism that links the operating part and the adjusting rod with each other and converts the movement of the operating part into the rotation of the adjusting rod;

a profile part, which is arranged in the hoistway and is inclined with respect to the direction of movement of the car; and

The operation force transmission part includes: an engaging part, which engages with the operating part in the axial direction of the sheave shaft; and a driven part, which is connected to the engaging part. The master member is guided, and by guiding the follower part by the master member, the engagement part is moved, and the operation force transmission member thereby moves the operation member in the axial direction of the sheave shaft. the

Description of drawings

Fig. 1 is a block diagram showing an elevator apparatus according to Embodiment 1 of the present invention. the

Fig. 2 is a front view showing the speed governor in Fig. 1 . the

Fig. 3 is a rear view showing the speed governor in Fig. 2 . the

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

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

Fig. 6 is a plan view showing a main part of the elevator apparatus in Fig. 1 . the

Fig. 7 is a side view showing a main part of the elevator apparatus in Fig. 6 . the

Fig. 8 is a main part front view showing the lower part of the car in Fig. 7 . the

Fig. 9 is a cross-sectional view taken along line IX-IX in Fig. 6 . the

Fig. 10 is a graph showing the relationship between the car speed, the first overspeed and the second overspeed and the distance from the terminal floor to the car during normal operation of the elevator apparatus in Fig. 1 . the

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

Fig. 12 is a structural diagram showing a main part of the governor device viewed in the radial direction of the governor sheave in Fig. 11 . the

Detailed ways

Next, preferred embodiments of the present invention will be described with reference to the drawings. the

Implementation mode 1

Fig. 1 is a block diagram showing an elevator apparatus according to Embodiment 1 of the present invention. In the drawing, a driving device 2 is provided on 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. A car 4 and a counterweight 5 are suspended in the hoistway 1 by main ropes 3 . In addition, a pair of car guide rails 6 for guiding the raising and lowering of the car 4 and a pair of counterweight guide rails (not shown) for guiding the raising and lowering of the counterweight 5 are provided in the hoistway 1 . the

A pair of emergency stop devices 7 for forcibly stopping the movement of the car 4 are attached to the car 4 . In addition, a speed limiter 8 is installed on the car 4, which is used to detect the overspeed of the car 4, and makes each emergency stop device 7 act; and a reverse sheave 9, which is rotatably arranged on the speed limiter around 8. Each emergency stop device 7 , speed governor 8 and return sheave 9 are arranged at the lower part of the car 4 . the

The speed limiter rope 10 is wound around the speed limiter 8 and the reverse sheave 9, and the speed limiter rope 10 is tensioned in the hoistway 1 along the up and down direction. An upper fixing member 11 is fixed to an upper portion of the car guide rail 6 , and a lower fixing member 12 is fixed to a lower portion of the car guide rail 6 . The upper end of the speed governor rope 10 is connected to the upper fixing member 11 through a spring (elastic body), and the lower end of the speed governor rope 10 is connected to the lower fixing member 12 through a spring (elastic body). That is, the speed governor rope 10 is wound around the speed governor 8 and the reversing sheave 9 sequentially from the lower fixing member 12 , and then reaches the upper fixing member 11 . Tension is applied to the governor rope 10 by the elastic force of each spring. the

FIG. 2 is a front view showing the speed governor 8 in FIG. 1 . In addition, FIG. 3 is a rear view showing the speed governor 8 in FIG. 2 . In the figure, a base 13 is fixed to the lower part of the car 4 . A horizontally extending sheave shaft 14 is rotatably supported on the base 13 . On the sheave shaft 14, a speed governor sheave 15 around which a speed governor rope 10 is hung is fixed. The governor sheave 15 rotates integrally with the sheave shaft 14 . the

A pair of fly pendulums 17 that can rotate around the pin 16 are provided on the side of the speed governor sheave 15 . Each fly pendulum 17 can move between a normal position and a trip position located radially outside of the speed governor sheave 15 compared to the normal position by rotating around the pin 16 . Each flying pendulum 17 rotates from the normal position to the unlocked position by means of the centrifugal force generated by the rotation of the speed governor sheave 15 . The flying pendulums 17 are connected to each other by connecting rods 18 . the

At one end of a flying pendulum 17 is fixed an operating claw 19 . By the rotation of the fly pendulum 17 from the normal position to the unlocked position, the action pawl 19 moves radially outward of the speed governor sheave 15 . the

A car stop switch 20 for stopping power supply to the drive device 2 and actuating a brake device (not shown) of the drive device 2 is attached to the base 13 . The switch 20 for car stop includes: a switch main body 21; When the fly pendulum 17 rotates to the stop action position between the normal position and the unlocked position, the switch lever 22 is operated through the action pawl 19 . In addition, when the speed of the car 4 reaches the first overspeed (usually about 1.3 times the rated speed), the flying pendulum 17 rotates to the stop action position, and when the speed of the car 4 reaches the second overspeed (usually the rated speed) When about 1.4 times of ), the flying pendulum 17 rotates to the unlocked position. the

The speed governor sheave 15 is provided with an unlock lever 24 that is rotatable around an axis 23 parallel to the pin 16 . A part of the unlock lever 24 abuts on the one flying pendulum 17 . The unlock lever 24 rotates around the shaft 23 by the rotation of the flyweight 17 . A torsion spring (not shown) that biases the unlock lever 24 in a direction in which the unlock lever 24 comes into contact with the flyweight 17 is provided on the shaft 23 . the

The base 13 is provided with a ratchet 25 capable of rotating around the sheave shaft 14 ( FIG. 3 ). The ratchet 25 rotates relative to the sheave shaft 14 . A plurality of teeth are provided on the outer peripheral portion of the ratchet 25 . the

One of the pins 16 is rotatably provided with an engaging claw 26 that selectively engages with either one of the unlock lever 24 and the ratchet 25 . The engaging pawl 26 is biased in a direction to engage with the ratchet 25 by an unillustrated tension spring. When the flying pendulum 17 is in the normal position, the engaging pawl 26 is engaged with the unlocking lever 24 and separated from the ratchet 25 . In addition, when the fly pendulum 17 rotates to the unlocked position, the engagement between the engaging pawl 26 and the unlocking lever 24 is released, and is rotated by the elastic force of the tension spring to engage with the ratchet 25 . the

Furthermore, an arm 27 is rotatably attached to the base 13 . On the arm 27 is rotatably mounted a shoe 28 which is pressed against the governor sheave 15 via the governor rope 10 . A movable spring shaft 29 penetrates a distal end portion 27 a of the arm 27 . A connecting link 30 is fixed to one end of the spring shaft 29 , and the connecting link 30 is rotatably connected to the ratchet 25 . A spring support member 31 is provided at the other end of the spring shaft 29 . Between the end portion 27 a of the arm 27 and the spring support part 31 there is provided a pressing spring 32 for pressing the shoe 28 against the governor rope 10 . the

When the governor sheave 15 rotates, the ratchet 25 is engaged with the engaging claw 26 to rotate in the same direction as the governor sheave 15 . Consequently, the arm 27 turns in a direction to press the shoe 28 against the governor sheave 15 . Since the shoe 28 is pressed against the governor sheave 15 by the governor rope 10, the governor rope 10 is constrained. the

And, the braking mechanism 33 that is used to constrain the speed limiter rope 10 includes: unlocking lever 24, ratchet 25, engaging pawl 26, arm 27, shoe 28, spring shaft 29, connecting link 30, spring bracket part 31 and pressing spring 32. the

Adjusting lever 34 is arranged on the sheave shaft 14, and this adjusting lever 34 can rotate along the circumferential direction of speed governor sheave 15 with respect to sheave axle 14. The adjustment rod 34 includes: a rod main body 35 including a cylindrical portion 35a through which the sheave shaft 14 penetrates inside; a long hole 36 extending in the direction; and a rod piece 38 provided on the outer peripheral portion of the rod body 35 and extending radially outward of the rod body 35 . the

A pin 39 passing through the elongated hole 36 is fixed to the side of the speed governor sheave 15 . The pin 39 is slidable in the elongated hole 36 along the length direction of the elongated hole 36 . As the adjustment lever 34 rotates relative to the sheave shaft 14 , the rotation restricting portion 37 slides relative to the pin 39 . Thus, the amount of rotation of the adjustment lever 34 is restricted. the

The lever piece 38 moves in the circumferential direction of the speed governor sheave 15 by the rotation of the lever main body 35 . A connecting body 40 is connected between the other end of the flying pendulum 17 and the rod piece 38 , and the connecting body 40 connects the flying pendulum 17 and the adjusting rod 34 . The connecting body 40 includes: a telescopic telescopic rod 41 connected between the flying pendulum 17 and the rod piece 38; The direction of the centrifugal force generated by the rotation exerts force. the

The flying pendulum 17 and the adjusting rod 34 are linked with each other through the connecting body 40 . Therefore, the normal position of the flying pendulum 17 can be adjusted toward or away from the unlocked position through the rotation of the adjustment rod 34 . That is, the rotation angle (rotation distance) of the flying pendulum 17 from the normal position to the unlocked position can be adjusted by the adjustment lever 34 . The magnitudes of the first and second overspeeds for emergency stopping of the car 4 can be adjusted by turning the adjusting rod 34 . the

FIG. 4 is a partial cross-sectional view showing main parts of the speed governor 8 in FIG. 3 . In addition, FIG. 5 is an exploded perspective view showing main parts of the speed governor 8 in FIG. 3 . An operating member 43 movable in the axial direction of the sheave shaft 14 is provided on the sheave shaft 14 . The operation member 43 includes: a pipe portion 44 surrounding the sheave shaft 14 ; and a plate-shaped disk portion 45 provided on the outer peripheral portion of the pipe portion 44 . The disk portion 45 is arranged perpendicular to the axis of the sheave shaft 14 . the

An interlocking mechanism 46 is provided between the sheave shaft 14 and the lever main body 35 for interlocking the operation member 43 and the adjustment lever 34 . The linkage mechanism 46 converts the movement of the operating member 43 relative to the sheave shaft 14 into the rotation of the adjustment lever 34 relative to the sheave shaft 14 . In this example, through the movement of the operating part 43 to the direction close to the speed limiter sheave 15, the linkage mechanism 46 rotates the adjustment lever 34 in such a direction: that is, the normal position of the flying pendulum 17 is left from the unlocked position, and by operating Part 43 moves to the direction away from speed governor sheave 15, and linkage mechanism 46 makes adjusting lever 34 rotate to such direction: that is, the normal position of flying pendulum 17 is approached unlocking position. the

The linkage mechanism 46 includes: a moving body 47, which is integrated with the operating member 43; a sheave shaft side spline portion 48 as a first guide portion, which is arranged on the outer peripheral surface of the sheave shaft 14, and when the moving body 47 is positioned relative to the sheave shaft, 14 moves, the sheave shaft side spline portion 48 rotates the moving body 47 relative to the sheave shaft 14; When the sheave shaft 14 moves, the rod-side spline portion 49 rotates the cylindrical portion 35 a relative to the moving body 47 in a direction opposite to the direction in which the moving body 47 passes through the sheave shaft-side spline portion 48 . . the

An internal spline portion 50 is provided on the inner peripheral surface of the mobile body 47, and the internal tooth spline portion 50 cooperates with the sheave shaft side spline portion 48, and an external tooth spline portion 51 is provided on the outer peripheral surface of the mobile body 47. The external tooth spline portion 51 is engaged with the rod side spline portion 49 . That is, the moving body 47 is spline-coupled to the rod main body 35 and the sheave shaft 14, respectively. Accordingly, the moving body 47 can move while rotating relative to the sheave shaft 14 and the cylindrical portion 35 a in the axial direction of the sheave shaft 14 . the

The respective tooth lines of the sheave shaft side spline portion 48 and the rod side spline portion 49 are inclined with respect to the axial direction of the sheave shaft 14 . That is, the sheave shaft side spline portion 48 and the rod side spline portion 49 are spline portions of helical teeth. In addition, the inclination direction (twisting direction) of the tooth line of the sheave shaft side spline portion 48 is opposite to the inclination direction (twisting direction) of the tooth line of the rod side spline portion 49 . Furthermore, the inclination angle (twist angle) of the tooth line of the sheave shaft side spline portion 48 is different from the inclination angle (twist angle) of the tooth line of the rod side spline portion 49 . the

When the moving body 47 moves relative to the sheave shaft 14 in the axial direction of the sheave shaft 14 , the rotation of the moving body 47 relative to the sheave shaft 14 and the rotation of the cylindrical portion 35 a relative to the moving body 47 are performed simultaneously. The rotation direction of the moving body 47 with respect to the sheave shaft 14 and the rotation direction of the cylindrical part 35a with respect to the moving body 47 are mutually opposite directions. Therefore, when the moving body 47 moves along the axial direction of the sheave shaft 14, the adjustment lever 34 rotates relative to the sheave shaft 14, and the angle of rotation is equal to the rotation angle of the moving body 47 relative to the sheave shaft 14 and the relative movement of the cylindrical portion 35a. The angular difference of the rotation angle of the body. the

Fig. 6 is a plan view showing a main part of the elevator apparatus in Fig. 1 . Fig. 7 is a side view showing a main part of the elevator apparatus in Fig. 6 . In addition, FIG. 8 is a main part front view showing the lower part of the car 4 in FIG. 7 . 9 is a cross-sectional view taken along line IX-IX in FIG. 6 . In the figure, the upper and lower parts in the hoistway 1 are provided with guide rails (former parts) 55 for operation that are inclined relative to the car guide rails 6. That is, the guide rail 55 for operation is inclined with respect to the moving direction of the car 4 . The operation guide rail 55 is inclined with respect to the car guide rail 6 such that the distance between the car guide rail 6 and the car guide rail 6 in the horizontal direction becomes smaller as it approaches the end portion of the hoistway 1 . In addition, the guide rail 55 for operation is fixed with respect to the car guide rail 6. As shown in FIG. In addition, the guide rail 55 for operation is arranged outside the area of the car 4 when the hoistway 1 is projected vertically. the

A rotation shaft 56 extending in the vertical direction is provided on the base 13 . An operating arm (operating force transmission member) 57 is supported on the base 13 , and the operating arm 57 is rotatable around the rotating shaft 56 . The operating arm 57 includes: a rod-shaped arm portion 58, which is rotatably arranged on the rotating shaft 56; 45 ; and a driven roller (follower portion) 60 provided at the other end of the arm portion 58 and guided along the guide rail 55 for operation by the movement of the car 4 . An intermediate portion of the arm portion 58 is provided on the rotation shaft 56 . the

As the driven roller 60 is guided along the operation guide rail 55 , the operation arm 57 rotates around the rotation shaft 56 . In this example, by guiding the driven roller 60 in a direction away from the car guide rail 6, the engaging portion 59 moves in a direction close to the speed governor sheave 15, and by guiding the driven roller 60 in a direction close to the car guide rail 6 , the engaging portion 59 moves away from the speed governor sheave 15 . the

The operation member 43 moves in the axial direction of the sheave shaft 14 by the movement of the engaging portion 59 due to the rotation of the operation arm 57 . That is, at the top and bottom of the hoistway 1, when the car 4 moves toward the terminal portion of the hoistway 1, the operating member 43 moves away from the speed governor sheave 15; When moving in the direction of the terminal portion, the operation member 43 moves in a direction approaching the speed governor sheave 15 . the

A support shaft 61 parallel to the sheave shaft 14 is provided on the base 13 . A link member 62 is rotatably provided on the support shaft 61 . A reverse sheave 9 is rotatably provided at a distal end portion of the link member 62 . The reversing sheave 9 rotates around the reversing sheave shaft 63 extending horizontally. That is, the return sheave 9 moves relative to the car 4 by the rotation of the link member 62 around the support shaft 61 . the

Each emergency stop device 7 is installed on the emergency stop frame 64 fixed on the lower part of the car 4 . Furthermore, each emergency stop device 7 includes: a wedge 65 capable of contacting and separating from the car guide rail 6 ; By making the wedge 65 contact the car guide rail 6 and engage between the jaws 66 and the car guide rail 6, each emergency stop device 7 operates. 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 canceled by separating the wedge 65 from the car guide rail 6 . the

A coupling shaft 67 is rotatably mounted on the emergency stop frame 64 and is used for coupling the individual emergency stop devices 7 to one another. The interlocking shaft 67 is arranged parallel to a straight line connecting the emergency stop devices 7 . Emergency stop levers 68 for moving the wedges 65 in contact with and away from the car guide rail 6 are respectively provided at both ends of the interlocking shaft 67 . One end of an emergency stop lever 68 is fixed to the interlocking shaft 67 . Accordingly, the emergency stop levers 68 rotate about the axis of the interlock shaft 67 in synchronization with each other. A wedge 65 is slidably provided at the other end of each emergency stop lever 68 . As the emergency stop lever 68 rotates upward, each wedge 65 engages between the jaw 66 and the car guide rail 6 . the

A connecting member 69 fixed to the link member 62 is connected to an intermediate portion of one emergency stop lever 68 , and the connecting member 69 is rotatable by a pin 70 . Thereby, by the rotation of the link member 62, each emergency stop lever 68 moves in the direction which makes each wedge 65 contact and separate from the car guide rail 6. As shown in FIG. Each emergency stop device 7 is operated by the upward rotation of the link member 62 . In addition, the operation of each emergency stop device 7 is canceled by the downward rotation of the link member 62 . the

In addition, an elevator control device (not shown) for controlling the operation of the elevator is installed in the hoistway 1 . In addition, an encoder (not shown) that is a detection unit for detecting the position and speed of the car 4 is provided in the driving device 2 . The encoder generates a signal corresponding to the rotation of the drive sheave 2a, and sends the generated signal to the elevator control device. The elevator control device controls the operation of the elevator based on the information from the encoder. the

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 during normal operation of the elevator in Fig. 1 . In the figure, the hoistway 1 is provided with the following two sections: the acceleration and deceleration section, which is the section where the car 4 accelerates and decelerates near one and the other terminal floor; A section that moves at a constant speed between acceleration and deceleration sections. the

The speed of car 4 during normal operation, the first overspeed and the second overspeed, according to the position change of car 4, change along the normal speed figure 71, the first overspeed figure 72 and the second overspeed figure 73 respectively. the

The value of the second overspeed pattern 73 is greater than the value of the first overspeed pattern 72 , and the value of the first overspeed pattern 72 is greater than the value of the normal speed pattern 71 . In addition, the normal speed pattern 71 , the first overspeed pattern 72 , and the second overspeed pattern 73 are each set to a constant value in the constant speed section, and to continuously decrease toward the terminal floor in the acceleration/deceleration section. the

A normal speed pattern 71 is set in the elevator control device. The elevator control device controls the operation of the elevator so that the car 4 moves in the hoistway 1 along the normal speed pattern 71 . the

The guide rail 55 for operation is provided in the acceleration/deceleration zone. In addition, the guide rail 55 for operation guides the driven roller 60 such that the first and second overspeeds decrease continuously as the car 4 approaches the terminal floor in the acceleration/deceleration section. Thus, the first overspeed varies along the first overspeed pattern 72 , and the second overspeed varies along the second overspeed pattern 73 . the

Next, the operation will be described. When the car 4 moves in the constant speed range, the driven roller 60 is fixed at a predetermined position relative to the car 4, and the magnitudes of the first overspeed and the second overspeed are respectively constant and have nothing to do with the position of the car 4 . the

When the car 4 moves toward the terminal floor in the acceleration/deceleration zone, the driven roller 60 moves toward the car guide rail 6 corresponding to the position of the car 4 under the guidance of the operation guide rail 55 . Accordingly, the operation arm 57 rotates around the rotation shaft 56 , and the engaging portion 59 moves in a direction away from the speed governor sheave 15 according to the amount of movement of the driven roller 60 . Accordingly, the operation member 43 moves in a direction away from the speed governor sheave 15 with respect to the sheave shaft 14 according to the movement amount of the engaging portion 59 . the

When the operating member 43 moves away from the speed governor sheave 15 , the adjustment lever 34 rotates in a direction to move the normal position of the flying pendulum 17 radially outward according to the amount of movement of the operating member 43 . Thereby, the normal position of the flying pendulum 17 approaches the stop action position and the unlocking position, and the approaching amount corresponds to the rotation amount of the adjusting rod 34, and the magnitude of the first overspeed and the second overspeed decreases corresponding to the position of the car 4. . the

When the car 4 moves to the direction away from the terminal floor in the acceleration and deceleration interval, it performs the opposite action to the above, and the magnitude of the first overspeed and the second overspeed increases corresponding to the position of the car 4 . the

During normal operation, the car 4 moves in the hoistway 1 along the normal speed pattern 71 under the control of the elevator control device. At this time, due to the rotation of the speed governor sheave 15, the flying pendulum 17 receives a centrifugal force to such an extent that it cannot move to the stop operation position. the

When for some reason the speed of the car 4 is further increased and the speed of the car 4 reaches the value of the first overspeed graph 72, the flying pendulum 17 rotates to the stop action position, and the switch lever 22 is operated by the action pawl 19. Thereby, the power supply to the driving device 2 is stopped under the control of the elevator control device, and the braking device is activated to stop the car 4 . the

For example, when the main rope 3 breaks, etc., even if the driving device 2 stops, the car 4 does not stop and continues to move, and when the speed of the car 4 reaches the value of the second overspeed figure 73, the flying pendulum 17 uses The centrifugal force generated by the rotation of the speed governor sheave 15 further rotates and reaches the unlocked position. As a result, the engagement pawl 26 is released from the unlock lever 24 , rotates, and engages with the ratchet 25 . Thus, the ratchet 25 is slightly rotated in the direction of rotation of the speed governor sheave 15 . the

The rotational force of the ratchet 25 is transmitted to the arm 27 through the connecting link 30 , the spring shaft 29 , the spring bracket part 31 and the pressing spring 32 . Thereby, the arm 27 turns and the shoe 28 is pressed against the governor rope 10 by the pressing spring 32 after contacting the governor rope 10 . Thus, the governor rope 10 is constrained between the governor sheave 15 and the shoe 28 . the

In the state where the speed governor rope 10 is restrained, the car 4 continues to descend, whereby the speed governor rope 10 is pulled downward, and as a result, the reverse sheave 9 moves upward relative to the car 4 . In this way, the link member 62 turns upward relative to the car 4 . the

When the link member 62 rotates upward relative to the car 4 , the emergency stop levers 68 fixed to the common interlock shaft 67 simultaneously rotate upward, and the wedges 65 move upward relative to the jaw 66 . As a result, each wedge 65 is engaged between the car guide rail 6 and the jaw 66, so each emergency stop device 7 operates. Accordingly, a braking force is applied to the car 4, and the car 4 is forcibly stopped. the

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

In such a speed governor device of an elevator, an operation guide rail 55 inclined relative to the moving direction of the car 4 is provided in the hoistway 1, and the operation arm 57 includes an engaging portion 59 that is positioned in the axial direction of the sheave shaft 14. and the driven roller 60, which is connected to the engaging part 59, and the driven roller 60 is guided along the guide rail 55 for operation by the movement of the car 4, and is guided by the guide rail 55 for operation. The driven roller 60 and the engaging part 59 move, so that the operating part 43 moves along the axial direction of the sheave shaft 14, thereby adjusting the magnitude of the first overspeed and the second overspeed. Therefore, even in the speed limiter rope Even in the state where the wheels 15 are rotating, the magnitudes of the first overspeed and the second overspeed can be easily adjusted corresponding to the position of the car 4 . In addition, since the operating member 43 is moved by the moving energy of the car 4, the magnitudes of the first overspeed and the second overspeed can be more reliably adjusted even during a power failure. the

Therefore, by adjusting the installation position and the inclination direction of the guide rail 55 for operation, in the acceleration and deceleration zone provided near the terminal floor, the magnitudes of the first and second overspeeds can be reduced toward the terminal floor, and the speed can be reduced in the constant speed zone. Make the magnitudes of the first overspeed and the second overspeed constant. Therefore, the first and second overspeeds can be made smaller than the constant speed section in the vicinity of the terminal floor, and the braking distance when the car 4 stops suddenly can be shortened. Accordingly, it is possible to reduce the size of the shock absorber provided in the pit portion of the hoistway 1 and reduce the depth of the pit portion. Furthermore, a reduction in the roof height dimension for allowing overshooting or jumping of the car 4 can also be achieved. That is, the size of the hoistway 1 in the height direction can be reduced. the

In addition, on the car 4 are installed: a reverse sheave 9, which can move relative to the car 4, and a speed limiter rope 10 is wound around the reverse sheave 9; and a pair of emergency stop devices 7, which pass through The reversing sheave 9 moves relative to the movement of the car 4. By constraining the speed governor rope 10 by the braking mechanism 33, the reversing sheave 9 moves relative to the car 4. Therefore, it can be reliably transmitted by each emergency stop device 7. The operation of the speed governor 8 can make each emergency stop device 7 operate more reliably. the

In addition, the linkage mechanism 46 includes: a moving body 47 integrally formed with the operating member 43; The sheave shaft side spline portion 48 rotates the moving body 47 relative to the sheave shaft 14; When the wheel shaft 14 moves, the rod-side spline portion 49 rotates the cylindrical portion 35a relative to the moving body 47 in a direction opposite to the direction in which the moving body 47 is rotated by the sheave shaft-side spline portion 48. Therefore, With respect to the movement of the mobile body 47 along the axial direction of the sheave shaft 14, a predetermined resistance force can be generated by the sheave shaft side spline portion 48 and the rod side spline portion 49, thereby preventing the speed governor sheave 15 from rotating. The centrifugal force or vibration causes the position of the mobile body 47 to deviate relative to the sheave shaft 14 . the

In addition, the moving body 47 is spline-coupled to the sheave shaft 14 through the sheave shaft side spline portion 48 whose tooth line is inclined with respect to the axial direction of the sheave shaft 14, and is splined with the sheave shaft 14 through the rod side with the tooth line inclined relative to the axial direction of the sheave shaft 14. The spline portion 49 is spline-coupled to the cylindrical portion 35a. Therefore, by moving the moving body 47 along the axial direction of the sheave shaft 14, the moving body 47 can be rotated more reliably with respect to the sheave shaft 14, and the cylindrical portion 35a can be rotated more reliably. Rotate more reliably with respect to the movable body 47 . the

In addition, in the above example, the connection between the moving body 47 and the cylindrical portion 35a and the sheave shaft 14 is spline connection, but as long as the moving body 47 can be rotated by moving the moving body 47 in the axial direction of the sheave shaft 14 The combination is not limited to the spline combination. the

Implementation mode 2

Fig. 11 is a sectional view of main parts showing an elevator speed governor device according to Embodiment 2 of the present invention. In addition, FIG. 12 is a structural diagram showing a main part of the governor device when viewed in the radial direction of the governor sheave 15 in FIG. 11 . In the drawing, a slide pin 81 extending in the radial direction of the speed governor sheave 15 is fixed to the moving body 47 in a penetrating state. The slide pin 81 has: a first protrusion 81 a protruding from the inner peripheral surface of the moving body 47 ; and a second protrusion 81 b protruding from the outer peripheral surface of the moving body 47 . the

A sheave shaft side groove portion 82 is provided on the outer peripheral surface of the sheave shaft 14 , and the first protrusion 81 a is slidably inserted into the sheave shaft side groove portion 82 . The sheave shaft side groove portion 82 is inclined with respect to the axial direction of the sheave shaft 14 . When the moving body 47 moves in the axial direction of the sheave shaft 14 , the first protruding portion 81 a is guided along the sheave shaft side groove portion 82 . Accordingly, the moving body 47 moves in the axial direction of the sheave shaft 14 while rotating relative to the sheave shaft 14 . the

A rod-side groove portion 83 is provided on the inner peripheral surface of the cylindrical portion 35a, and the second protrusion portion 81b is slidably inserted into the rod-side groove portion 83 . The rod side groove portion 83 is inclined in a direction opposite to the inclination direction of the sheave shaft side groove portion 82 with respect to the axial direction of the sheave shaft 14 . By the movement of the moving body 47 in the axial direction of the sheave shaft 14 , the second protrusion 81 b is guided along the rod-side groove 83 . By moving in the axial direction of the sheave shaft 14 , the cylindrical portion 35 a rotates relative to the moving body 47 in a direction opposite to the direction in which the moving body 47 rotates through the sheave shaft side groove portion 82 . the

The inclination angle of the sheave shaft side groove portion 82 with respect to the axial direction of the sheave shaft 14 is different from the inclination angle of the rod side groove portion 83 with respect to the axial direction of the sheave shaft 14 . When the mobile body 47 moves relative to the sheave shaft 14 in the axial direction of the sheave shaft 14, the rotation of the mobile body 47 relative to the sheave shaft 14 and the rotation of the cylindrical portion 35a relative to the mobile body 47 are performed simultaneously. The rotation direction of the moving body 47 with respect to the sheave shaft 14 and the rotation direction of the cylindrical part 35a with respect to the moving body 47 are mutually opposite directions. Therefore, when the moving body 47 moves along the axial direction of the sheave shaft 14, the adjustment lever 34 rotates relative to the sheave shaft 14 and the speed governor sheave 15, and the angle of rotation is equal to the rotation angle of the moving body 47 relative to the sheave shaft 14 and The angle difference of the cylindrical part 35a with respect to the rotation angle of a moving body. the

Also, the interlocking mechanism 84 for interlocking the operation member 43 and the adjustment lever 34 includes the movable body 47 , the slide pin 81 , the sheave shaft side groove 82 , and the lever side groove 83 . In addition, other structures are the same as those of Embodiment 1. the

In such an elevator apparatus, the sheave shaft side groove portion 82 rotates the moving body 47 relative to the sheave shaft 14 by guiding the first protruding portion 81a protruding from the inner peripheral surface of the moving body 47, and the sheave shaft side groove portion 82 is provided. In the sheave shaft 14, the rod-side groove portion 83 is provided on the cylindrical portion 83 to rotate the cylindrical portion 35a relative to the moving body 47 by guiding the second protrusion 81b protruding from the outer peripheral surface of the moving body 47. Therefore, the structure of the interlocking mechanism 84 can be simplified, and the manufacturing cost can be reduced. the

In addition, in the above example, the sheave shaft side groove portion 82 is provided on the sheave shaft 14, but the sheave shaft side groove portion 82 may be formed as a long hole. In addition, in the above example, the rod-side groove portion 83 is provided in the cylindrical portion 35a, but the rod-side groove portion 83 may be a long hole. the

In addition, in each of the above-mentioned embodiments, the guide rail 55 for operation is provided only in the acceleration and deceleration zone, and the driven roller 60 is not guided by the track in the constant speed zone, but it is also possible to use a parallel rail extending parallel to the car guide rail 6 . The guide rail is set in the constant speed zone. When the car 4 is in the acceleration and deceleration zone, the driven roller 60 is guided along the guide rail 55 for operation. When the car 4 is in the constant speed zone, the driven roller 60 is guided along the parallel guide rail. . the

Claims (5)

1. the overspeed preventer device of an elevator is characterized in that,

The overspeed preventer device of described elevator comprises:

Sheave shaft, it can be rotated to support on the pedestal that is installed on car;

Governor sheave, it can rotate integratedly with described sheave shaft, and on this governor sheave around hanging with slack-free along the vertical direction overspeed governor in hoistway, this governor sheave rotates corresponding to moving of described car;

Fly pendulum, it is arranged at described governor sheave, and can be in the normal position and and described normal position compare between the unlocked position at the radial outside of described governor sheave, move with respect to described governor sheave, describedly fly to put the centnifugal force that is produced by means of described governor sheave rotation and move to described unlocked position from described normal position;

Stop mechanism, it is installed on described car, and is flapped toward moving of described unlocked position by described flying, thereby retrains described overspeed governor;

Adjusting lever, it can be with respect to the circumferential rotation of described sheave shaft along described governor sheave, thus this adjusting lever green phase makes the described moving described described normal position that flies to put of adjusting that flies to swing for the described rotation of described sheave shaft;

Operating unit, it can move with respect to the axis direction of described sheave shaft along described sheave shaft;

Link gear, it links described operating unit and described adjusting lever each other, and with the mobile described rotation that converts described adjusting lever to of described operating unit;

The pattern parts, it is arranged in the described hoistway, and tilts with respect to the moving direction of described car; And

The operating effort transferring elements, it comprises: the engagement section, it engages with described operating unit on the axis direction of described sheave shaft; And follower, it is connected with described engagement section, by moving of described car, this follower is directed along described pattern parts, by guiding described follower by described pattern parts, described engagement section is moved, and this operating effort transferring elements makes described operating unit move along the axis direction of described sheave shaft thus.

2. the overspeed preventer device of elevator as claimed in claim 1 is characterized in that,

On described car, be equipped with: diversion sheave, it can move with respect to described car, and on this diversion sheave around hanging with described overspeed governor; And emergency braking device, it with respect to the moving of described car, is used for forcibly making the mobile of described car to stop by described diversion sheave,

By retraining described overspeed governor by described stop mechanism, described diversion sheave moves with respect to described car.

3. the overspeed preventer device of elevator as claimed in claim 1 or 2 is characterized in that,

Described link gear comprises:

The moving body of ring-type, itself and described operating unit constitute one;

First guide part, it is arranged at the outer peripheral face of described sheave shaft, and when described moving body moved with respect to described sheave shaft, this first guide part made described moving body rotate with respect to described sheave shaft; And

Second guide part, it is arranged at described adjusting lever, when described moving body moved with respect to described sheave shaft, this second guide part made described adjusting lever rotate to such direction with respect to described moving body: the opposite sense of the direction of the rotation that described moving body is undertaken by described first guide part.

4. the overspeed preventer device of elevator as claimed in claim 3 is characterized in that,

Described adjusting lever has cylindrical portion,

At least one side in described first guide part and described second guide part constitutes the axis direction bevelled spline part of tooth trace with respect to described sheave shaft,

Described moving body combines with at least one side's spline in described cylindrical portion and the described sheave shaft by described spline part.

5. the overspeed preventer device of elevator as claimed in claim 3 is characterized in that,

At least one side in described first guide part and described second guide part constitutes the axis direction bevelled slot part with respect to described sheave shaft,

Described moving body is provided with the protrusion that is inserted in the described slot part.

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