JPWO2007004293A1 - Elevator governor rope tensioner - Google Patents

Abstract

An elevator governor rope tensioner device includes a tensioner suspended from a governor rope, a rotating member that is rotated by the vertical displacement of the tensioner, and the tensioner is displaced upward. A regulating member in which the distance between the pivoting member is reduced by pivoting the pivoting member in the direction to be moved, a wedge inserted between the pivoting member and the regulating member, and the wedge being the pivoting member And an urging member that urges the wedge in a direction in which the distance between the regulating member and the regulating member is increased. A support member is provided in the hoistway. The rotating member and the regulating member are provided on the support member. The wedge is provided with a first contact surface that contacts the rotating member and a second contact surface that is inclined with respect to the first contact surface and contacts the regulating member. When the wedge is pushed between the rotating member and the regulating member, the upward displacement of the tension wheel is prevented.

Description

  The present invention relates to an elevator governor rope tensioner device for applying tension to a governor rope moved together with a car.

  In conventional elevators, a tension wheel and a weight may be suspended from the governor rope in order to apply tension to the governor rope. The governor rope is wrapped around a tensioner and the weight is attached to the tensioner. A fixing member is attached to the car guide rail that guides the raising and lowering of the car by a rail clip. The fixing member is provided with an arm member that can rotate around the shaft. A tension wheel is provided at the tip of the arm member.

  A plurality of teeth are formed on the proximal end portion of the arm member close to the shaft. The fixing member is provided with a claw that engages with a tooth formed on the arm member. The teeth are engaged with the claws only when the arm member is rotated upward. Thereby, the downward rotation of the arm member is permitted, and the upward rotation of the arm member is prevented. In this way, the tensioned vehicle is prevented from lifting and the tension applied to the governor rope is maintained (see Patent Document 1).

JP 2002-179361 A

However, when the teeth are engaged with the claws, the arm member can be prevented from turning upward, but when the claws are located between the teeth, the teeth are engaged with the claws. Until then, the arm member is rotated upward, and the tension wheel is lifted.
For example, when a passenger in the car moves around, the car may vibrate up and down. If the tension wheel is lifted while the car is vibrating in the vertical direction, the tension applied to the governor rope is reduced, so that the governor rope rolls. When rolling occurs on the governor rope, the rotational speed of the governor sheave around which the governor rope is wound also varies. Therefore, the speed of the car cannot be detected accurately, and the emergency stop device for forcibly stopping the movement of the car will malfunction. In addition, the governor rope may be caught by other devices installed in the hoistway due to the roll of the governor rope.

  The present invention has been made in order to solve the above-described problems, and is an elevator that can prevent the tensioned vehicle from lifting and can prevent a sudden drop in the magnitude of tension applied to the governor rope. The purpose of this invention is to obtain a tensioner device for a governor rope.

  An elevator governor rope tensioner device according to the present invention includes a tensioner rope that is moved along with a car, and a tensioner that is suspended from the governor rope, and a support member that is provided in the hoistway. The tensioning wheel is rotatably provided and the tensioning wheel is rotatably provided. The tensioning wheel is provided on the pivoting member and the supporting member which are rotated with respect to the supporting member by the displacement of the tensioning wheel in the vertical direction. A regulating member whose distance from the rotating member is reduced by rotating the rotating member in the direction in which the rotating member is displaced upward, a first contact surface that contacts the rotating member, and a first contact A wedge which is inclined with respect to the contact surface and is provided between the rotating member and the restricting member and is displaceable relative to the rotating member and the restricting member. , And the wedge in the direction that widens the gap between the rotating member and the regulating member. And a biasing member for energizing.

It is a block diagram which shows the elevator by Embodiment 1 of this invention. It is a front view which shows the tensioning-wheel apparatus of FIG. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. FIG. 4 is a front view showing the tensioning device when the tensioning wheel of FIG. 3 is displaced downward. In the elevator of FIG. 1, it is a block diagram which shows a state when the car vibrating in the up-down direction is displaced to the amplitude lowest point. FIG. 6 is a configuration diagram showing a state when a car oscillating vertically is displaced to the highest amplitude point in the elevator of FIG. 5.

Preferred embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a block diagram showing an elevator according to Embodiment 1 of the present invention. In the figure, a pair of car guide rails 2 and a pair of counterweight guide rails (not shown) are installed in the hoistway 1. A car 3 is disposed between the car guide rails 2. A counterweight 4 is disposed between the counterweight guide rails.

  A machine room 5 is provided in the upper part of the hoistway 1. In the machine room 5, a hoisting machine (driving device) 6 for raising and lowering the car 3 and the counterweight 4 in the hoistway 1, and a sled wheel arranged at an interval from the hoisting machine 6. 7 are installed. The hoisting machine 6 includes a drive device body 8 including a motor and a brake device, and a drive sheave 9 rotated by the drive device body 8.

  A plurality of main ropes 10 are wound around the drive sheave 9 and the deflecting wheel 7. The car 3 and the counterweight 4 are suspended in the hoistway 1 by the main ropes 10. The car 3 is moved up and down in the hoistway 1 while being guided by the car guide rails 2 by the driving force of the hoisting machine 6. Further, the counterweight 4 is moved up and down in the hoistway 1 while being guided by each counterweight guide rail by the driving force of the hoisting machine 6.

  A speed governor 11 that detects the speed of the car 3 is also installed in the machine room 5. The governor 11 includes a governor body 12 and a governor sheave 13 that can rotate with respect to the governor body 12. Further, the speed governor 11 and the hoist 6 are electrically connected to a control device 14 that controls the operation of the elevator. The control device 14 is installed in the machine room 5.

  The car 3 is equipped with an emergency stop device 15 for forcibly stopping the movement of the car 3. A governor rope 16 is wound around the governor sheave 13. One end and the other end of the governor rope 16 are connected to the emergency stop device 15 via an operating lever 17. Thereby, the governor rope 16 is moved together with the car 3 and the governor sheave 13 is rotated as the car 3 is moved.

  The governor body 12 outputs a stop signal to the control device 14 when the rotational speed of the governor sheave 13 reaches the first set overspeed (about 1.3 times the rated speed). Yes. Further, the governor body 12 has a governor rope when the rotational speed of the governor sheave 13 reaches a second set overspeed (about 1.4 times the rated speed) that is larger than the first set speed. 16 is gripped.

  The control device 14 is configured to stop the motor of the hoisting machine 6 and operate the brake device by receiving a stop signal from the governor body 12. The emergency stop device 15 is operated when the governor rope 16 is gripped by the governor body 12 and the operating lever 17 is displaced with respect to the car 3. The movement of the car 3 is forcibly stopped by the operation of the safety device 15.

  In the lower part of the hoistway 1, a governor rope tensioner device (hereinafter simply referred to as “tensioner device”) 18 for applying tension to the governor rope 16 is provided. The tensioner device 18 is attached to one of the car guide rails 2.

  FIG. 2 is a front view showing the tensioning apparatus 18 of FIG. FIG. 3 is a cross-sectional view taken along line III-III in FIG. In the drawing, a support plate (support member) 19 that supports a tensioner device 18 is attached to a car guide rail 2 by a rail clip 20. The support plate 19 is provided with an arm (rotating member) 22 that is rotatable about a support shaft 21 that extends horizontally. The support shaft 21 is provided with a base end portion of an arm 22. A tension wheel 23 around which the governor rope 16 is wound is provided at the tip of the arm 22. The tension wheel 23 is rotatable about a rotation shaft 24 parallel to the support shaft 21.

  The arm 22 is rotated about the support shaft 21 by the displacement of the tension wheel 23 in the vertical direction. The tension wheel 23 is rotated about the rotation shaft 24 by the movement of the governor rope 16. A weight 26 is provided on the rotary shaft 24 via a suspension member 25. The tension wheel 23 and the weight 26 are suspended by the governor rope 16.

  A protruding pin (regulating member) 27 protruding from the support plate 19 is fixed to the support plate 19. The protruding pin 27 is disposed above the arm 22. Further, the protruding pin 27 is disposed on the side of the tension wheel 23 from the position of the support shaft 21 in the horizontal direction. That is, the interval between the projecting pin 27 and the arm 22 is reduced by rotating the arm 22 in the direction in which the tension wheel 23 is displaced upward.

  A sliding surface 28 extending in the length direction of the arm 22 is provided on a portion of the arm 22 on the protruding pin 27 side. A wedge 29 that is displaceable with respect to the arm 22 and the protruding pin 27 is inserted between the arm 22 and the protruding pin 27. The wedge 29 is provided with a first contact surface 30 that contacts the sliding surface 28 and a second contact surface 31 that contacts the protruding pin 27. The second contact surface 31 is inclined with respect to the first contact surface 30. The wedge 29 is disposed between the arm 22 and the protruding pin 27 in a state where the first contact surface 30 is in contact with the sliding surface 28 and the second contact surface 31 is in contact with the protruding pin 27. Has been inserted.

  A wedge-side spring hook pin 32 is fixed to the wedge 29. A support plate side spring hook pin 33 is fixed to the support plate 19. A tension spring (biasing member) 34 that is biased in a contracting direction is hung between the wedge-side spring latch pin 32 and the support plate-side spring latch pin 33. The wedge 29 is urged by a pulling spring 34 in a direction that widens the distance between the arm 22 and the protruding pin 27. As a result, the arm 22 is biased so as to be rotated in a direction in which the tension wheel 23 is displaced downward. A predetermined frictional force is generated between the first contact surface 30 and the sliding surface 28 and between the second contact surface 31 and the protruding pin 27.

  FIG. 4 is a front view showing the tensioning device 18 when the tensioning wheel 23 of FIG. 2 is displaced downward. As shown in the drawing, when the tensioning rope 23 is displaced downward, for example, when the governor rope 16 is extended, the arm 22 is rotated, and the space between the arm 22 and the protruding pin 27 is widened. The wedge 29 is displaced in a direction to be pushed between the arm 22 and the projecting pin 27 while being in contact with the arm 22 and the projecting pin 27 by the biasing force of the pulling spring 34. Since a predetermined frictional force is generated between the first contact surface 30 and the sliding surface 28 and between the second contact surface 31 and the protruding pin 27, the wedge 29 is pushed back. This prevents the upholstery wheel 23 from being displaced upward.

  Next, the operation will be described. The wedge 29 is constantly urged by the urging force of the tension spring 34 in a direction that pushes the gap between the arm 22 and the protruding pin 27. In this state, tension is applied to the governor rope 16.

  For example, when the governor rope 16 is extended and the tension wheel 23 is displaced downward, the arm 22 is rotated in a direction away from the protruding pin 27 (that is, downward). At this time, the wedge 29 is displaced while being in contact with each of the projecting pin 27 and the arm 22 by the urging force of the tension spring 34, and is pushed between the projecting pin 27 and the arm 22. Thereby, the upward displacement of the tension wheel 23 is prevented.

  When the car 3 is moved in the hoistway 1, the governor rope 16 is also moved together with the car 3. As a result, the governor sheave 13 and the tension wheel 23 are rotated.

  When the rotational speed of the governor sheave 13 reaches the first set overspeed, a stop signal is output from the governor body 12 to the control device 14. As a result, the brake device of the hoisting machine 6 is operated under the control of the control device 14, and the rotation of the drive sheave 9 is braked.

  For example, when the speed of the car 3 further increases due to breakage of the main rope 10 and the rotational speed of the governor sheave 13 reaches the second set overspeed, the governor rope 16 is gripped by the governor body 12. Is done. Thereby, the movement of the governor rope 16 is stopped and the emergency stop device 15 is operated. Thereby, the movement of the car 3 is forcibly stopped.

  Next, the operation when the car 3 vibrates in the vertical direction will be described. FIG. 5 is a block diagram showing a state when the car 3 oscillating in the vertical direction is displaced to the lowest amplitude point in the elevator of FIG. FIG. 6 is a configuration diagram showing a state when the car 3 oscillating in the vertical direction is displaced to the highest amplitude point in the elevator of FIG. As shown in the figure, for example, when the car 3 is vibrated up and down due to the movement of passengers 35 in the car 3, the governor rope 16 repeatedly moves up and down in accordance with the vibration of the car 3. Is done. At this time, the rotational directions of the governor sheave 13 and the tension wheel 23 are also repeatedly reversed as the governor rope 16 moves in the vertical direction.

  When the car 3 is displaced toward the lowest amplitude point, the magnitude of tension applied to the portion of the main rope 10 between the car 3 and the drive sheave 9 increases. At this time, since the operating lever 17 is displaced downward together with the car 3, the tension applied to the portion between the lower portion of the operating lever 17 of the governor rope 16 and the tensioning wheel 23 is reduced. However, since the tension wheel 23 is urged downward by the tension wheel device 18, the magnitude of the tension applied to the governor rope 16 is prevented from rapidly decreasing.

  When the car 3 is displaced toward the highest amplitude point, the magnitude of tension applied to the portion of the main rope 10 between the car 3 and the drive sheave 9 is reduced. As a result, the main rope 10 rolls. At this time, since the operating lever 17 is displaced upward together with the car 3, the tension applied to the portion between the upper portion of the operating lever 17 of the governor rope 16 and the governor sheave 13 is reduced. However, since the wedge 29 is pushed between the projecting pin 27 and the arm 22, the upward displacement of the tensioning wheel 23 is prevented, so that the tensioning wheel 23 does not float upward, and the governor rope It is possible to prevent the magnitude of the tension applied to 16 from rapidly decreasing.

  In such a tension vehicle device 18, the tension wheel 23 suspended from the governor rope 16 is provided on the support plate 19 and the arm 22 that is rotated with respect to the support plate 19 by the vertical displacement. A wedge 29 is inserted between the projecting pin 27 and the distance between the arm 22 and the arm 22 is reduced by the upward displacement of the tensioning wheel 23, and the wedge 29 is pushed in a direction to expand the distance between the arm 22 and the projecting pin 27. Is biased by the tension spring 34, the tension wheel 23 can be constantly biased downward. Further, since the wedge 29 is pushed between the arm 22 and the protruding pin 27, the arm 22 can be prevented from rotating in a direction approaching the protruding pin 27. Thereby, it is possible to prevent the tension wheel 23 from being displaced upward, and it is possible to prevent a rapid decrease in the magnitude of the tension applied to the governor rope 16. Accordingly, even when the car 3 vibrates in the vertical direction, the rolling of the governor rope 16 can be prevented, and the ascending / descending speed of the car 3 can be accurately determined by the rotational speed of the governor sheave 13. It can be detected well. Further, for example, malfunction of the emergency stop device 15 and catching of the governor rope 16 on other devices can be prevented.

  Further, since the protruding pin 27 is disposed above the arm 22, the protruding pin 27 can be disposed between the support shaft 21 and the tensioning wheel 23 in the horizontal direction, and the length of the arm 22 is shortened. can do. Thereby, reduction of material cost and space saving can be achieved.

  In the above example, the protruding pin 27 is disposed above the arm 22, but the protruding pin 27 may be disposed below the arm 22. In this case, the protruding pin 27 is disposed on the side farther from the tensioning wheel 23 than the support shaft 21 in the horizontal direction. Even in this case, when the arm 22 is rotated in the direction in which the tension wheel 23 is displaced upward, the interval between the protruding pin 27 and the arm 22 can be reduced. By pushing the wedge 29 between the arm 27 and the arm 22, the upward displacement of the tension wheel 23 can be prevented.

In addition, the wedge 29 and the tension spring 34 increase in size because the displacement of the wedge 29 increases as the distance in the horizontal direction between the protruding pin 27 and the support shaft 21 increases. Therefore, in order to reduce the size, it is desirable to reduce the distance in the horizontal direction between the protruding pin 27 and the support shaft 21.

Claims (2)

A tension wheel wrapped around a governor rope that is moved with the car and suspended from the governor rope,
The support member provided in the hoistway is rotatably provided, and the tension wheel is rotatably provided, and is rotated with respect to the support member by the vertical displacement of the tension wheel. Rotating member,
A regulating member which is provided on the support member, and the interval between the turning member is reduced by turning the turning member in a direction in which the tension wheel is displaced upward;
A first abutting surface that abuts on the rotating member and a second abutting surface that is inclined with respect to the first abutting surface and abuts on the regulating member are provided, A wedge inserted between the regulating member and displaceable with respect to the pivoting member and the regulating member; and the wedge in a direction in which the wedge pushes a gap between the pivoting member and the regulating member. There is provided a biasing member for biasing the elevator governor rope tensioner device. The tensioning device for a governor rope for an elevator according to claim 1, wherein the regulating member is disposed above the rotating member.

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