JP4607214B2 - Elevator system - Google Patents

Description

  The present invention relates to an elevator system, and more particularly to an elevator system including an emergency stop device that generates a braking force by pressing a wedge against a guide rail.

  A normal elevator car or counterweight is equipped with a device that detects the abnormal operation and operates the safety when the car or counterweight rises or descends at an abnormally high speed for some reason. (See Patent Document 1 and Patent Document 2). There are two safetys corresponding to the two guide rails, and each safety has two wedges for obtaining a braking force between the guide rails. Due to the abnormally high speed movement of the governor rope, the safety link is pulled up via the governor rope hitch, whereby the wedge is pulled up and pressed so that the wedge sandwiches the guide rail.

In this case, when the safety link is pulled up via the governor rope hitch, the two safetys are operated simultaneously to pull up each wedge at the same time, and the wedges are adjusted to be pressed against the guide rail at the same time in a short time. It is necessary to keep it. Therefore, it is necessary to adjust the length of the safety link rod so that the clearance between the wedge and the guide rail is adjusted to be small, and at that time, it is necessary to check the wedge attachment positions of the safety on both sides.
JP 2001-122551 A JP 2007-238226 A

  In the conventional elevator, in the clearance adjustment between the wedge and the guide rail, it is difficult to access the adjustment portion and the workability is poor.

  The present invention addresses such problems and aims to facilitate adjustment of the clearance between the wedge and the guide rail of the emergency stop device of an elevator system.

In order to achieve the above object, one aspect of an elevator system according to the present invention includes a guide rail extending in the vertical direction in a hoistway, and a car and a counterweight that move up and down along the guide rail in the hoistway. A governor attached to the hoistway, a governor rope suspended from the governor, a governor rope hitch coupled to the governor rope, a frame fixed to at least one of the car and the counterweight, and the frame On the other hand, a shaft that can be rotated around a horizontal axis and interlocked with the governor rope hitch, a bar that is fixed to the shaft and that extends in a direction perpendicular to the rotation axis of the shaft, and a pull-out attached to the bar Stop and have a lift rod through hole, the bar penetrates the lift rod through hole and engages with the bar Engagement is maintained by a slip-off prevention, and a lift rod driven up and down with respect to the frame by rotation of the bar, and driven by the lift rod, the governor rope is driven at a speed higher than a predetermined speed. A wedge that generates a braking force when driven up or down relative to the frame and is pressed against the guide rail to generate braking force, and the bar penetrates the lift rod through hole. And two rollers having roller through-holes through which the bar passes, and a spring that presses the two rollers against the lift rod .
Another aspect of the elevator system according to the present invention includes a guide rail extending in the vertical direction in the hoistway, a car and a counterweight moving up and down along the guide rail in the hoistway, and the hoistway. An attached governor, a governor rope suspended from the governor, a governor rope hitch coupled to the governor rope, a frame fixed to at least one of the car and the counterweight, and about a horizontal axis with respect to the frame A shaft that is rotatable and interlocked with the governor rope hitch, a bar that is fixed to the shaft and extends in a direction perpendicular to the rotation axis of the shaft, a retaining member attached to the bar, and a lift rod penetrating The bar passes through the lift rod through hole and engages with the bar to engage with the bar. And a lift rod driven in the vertical direction with respect to the frame by the rotation of the bar, and driven by the lift rod, the governor rope is raised or lowered at a speed higher than a predetermined speed. A wedge that is driven relative to the frame in either one of the upper and lower directions and pressed against the guide rail to generate a braking force, and the side surface of the shaft and the side surface of the lift rod are directly It is comprised so that it may contact.

  ADVANTAGE OF THE INVENTION According to this invention, the clearance adjustment between the wedge and guide rail of the emergency stop apparatus of an elevator system becomes easy.

  Embodiments of an elevator system according to the present invention will be described below with reference to the drawings. Here, the same or similar parts are denoted by common reference numerals, and redundant description is omitted.

[First Embodiment]
A first embodiment of an elevator system according to the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is an elevation view showing a main part of the emergency stop device of the first embodiment of the elevator system according to the present invention, and FIG. 2 is an emergency stop device of the first embodiment of the elevator system according to the present invention. FIG. 3 is a schematic side sectional view of the emergency stop device of the first embodiment of the elevator system according to the present invention.

  As shown in FIG. 2, along the wall of the hoistway 1, a first guide rail 2 and a second guide rail 102 are arranged so as to extend vertically at positions where the car 3 is sandwiched. The car 3 can be moved up and down by being guided by the first guide rail 2 and the second guide rail 102 via the first guide device 4 and the second guide device 104, respectively. The car 3 has a structure in which a car room 3b is installed on a floor receiving frame 3a, and a first safety 5 and a second safety 105 are provided on a lower beam (frame) 3c below the floor receiving frame 3a. It has been.

  The safetys 5 and 105 are for stopping the car in an emergency, and in order to operate the safetys 5 and 105 simultaneously, a rotatable safety link 6 is provided. One end of the safety link 6 is connected to a governor rope 8 through a governor rope hitch 7 including a lifting force transmission lever 7a and a connecting portion 7b. The governor rope 8 is stretched over a governor 9 provided at the upper part of the hoistway 1 and a governor tensioner 9b provided near the lower pit. Since the governor rope hitch 7 and the safety link 6 are connected to the car 3, the governor rope 8 moves up and down in conjunction with the raising and lowering of the car 3.

  FIG. 2 shows a state where the car 3 is lowered to the height position of the governor tensioner 9b near the pit.

  As shown in FIGS. 1 to 3, the safety link 6 is attached to the lower beam 3 c of the car 3 and is connected to the pulling transmission lever 7 a of the governor rope hitch 7. The first safety 5 and the second safety 105 are disposed near both ends of the lower portion of the lower beam 3c.

  The first safety 5 and the second safety 105 are connected by a safety link rod 20 of the safety link 6 so as to be interlocked with each other. Since the structures of the first safety 5 and the second safety 105 are basically the same, only the first safety 5 will be described here.

  The shaft 11 extends in the horizontal direction and is rotatably attached to the lower beam 3c. The lifting force transmission lever 7 a is fixed to the shaft 11 perpendicularly.

  Further, a pair (two) of lift rod levers 13 which are parallel to each other are fixed to the shaft 11.

  Further, a safety link lever 40 extending perpendicularly to the direction of the shaft 11 in a direction perpendicular to the lift rod lever 13 is fixed to the shaft 11, and the safety link rod 20 is attached to the tip of the safety link lever 40. Is pivotally mounted. The safety link rod 20 is pushed by the rotation of the shaft 11, whereby the second safety 105 is driven.

  At the tip ends of the pair of lift rod levers 13, the vicinity of the upper end of the lift rod 10 is rotatably engaged. This engagement will be described later. Each lift rod 10 extends in the vertical direction and is movable in the vertical direction, and a wedge 14 is attached to a lower portion thereof via a stop pin 60. The wedges 14 are widened downward, and a pair of wedges 14 are arranged with the guide rail 2 interposed therebetween. A spring 25 that pushes each wedge 14 in the horizontal direction is arranged. The spring 25 is configured to urge the wedge 14 in the horizontal direction toward the guide rail 2 when the wedge 14 is pulled up.

  Here, the engaging portion between the lift rod lever 13 and the lift rod 10 will be described. Near the tip of the lift rod lever 13, a bar mounting plate 30 is fixed perpendicularly to the surface on which the lift rod lever 13 extends, and the bar 15 is mounted on the bar mounting plate 30. The bar 15 extends substantially parallel to the lift rod lever 13, protrudes from the lift rod lever 13, and passes through a long hole (lift rod through hole) 31 near the upper end of the lift rod 10. The long hole 31 extends in the vertical direction, and can slide up and down with the bar 15 penetrating therethrough.

  A stopper 32 is attached to the tip of the bar 15. Two rollers 17a and 17b are arranged with a portion where the bar 15 penetrates the long hole 31 interposed therebetween. The rollers 17a and 17b have through holes, and the bars 15 pass through these through holes. First and second springs 16a and 16b are disposed between the bar mounting plate 30 and the first roller 17a and between the retaining member 32 and the second roller 17b, respectively. 17 a and 17 b are pressed against the lift rod 10 from both sides of the long hole 31 of the lift rod 10. The upper part of the lift rod 10 protrudes laterally from below the lower beam 3c.

  When the car 3 moves up or down at a high speed due to some abnormality, the governor rope 8 moves at a high speed accordingly, and the governor 9 detects the abnormality based on the rotation and operates the governor rope gripping portion 9a. . Thereby, the movement of the governor rope 8 is suppressed. At this time, since the car 3 continues to rise or fall, the governor rope hitch 7 is pulled up with respect to the car 3 by the relative movement. At this time, since the lifting force transmission lever 7a is pulled up, the shaft 11 rotates counterclockwise in FIG. 1, and accordingly, the two lift rod levers 13 also rotate counterclockwise. Thereby, the two lift rods 10 are pulled up, and thereby the two wedges 14 are pulled up. At this time, the spring 25 works and the two wedges 14 are pressed from both sides of the first guide rail 2 to generate a braking force.

  At this time, the lift rod lever 13 of the first safety 5 rotates counterclockwise in FIG. 1, so that the safety link rod 20 connected thereto is pushed in the direction of the arrow 61, and the second The safety 105 operates in the same manner as the first safety 5, and a pair of wedges (not shown) of the second safety 105 are pressed from both sides of the second guide rail 102 to generate a braking force. As a result, the car 3 is stopped.

  In the abnormal stop operation, in FIG. 1, when the lift rod lever 13 rotates counterclockwise about the shaft 11 as a rotation axis, the rollers 17 a and 17 b are pushed upward by the bar 15. At this time, since the lift rod 10 can move only in the vertical direction, the first spring 16a is contracted and the second spring 16b is expanded, so that the rollers 17a and 17b and the lift rod 10 do not move relatively. The rod 10 is pulled up.

  When adjusting the gap between the wedge 14 and the guide rail 2 during inspection and adjustment of the elevator, for example, the two springs 16a and 16b are pressed and contracted by an external force and then sandwiched by the two rollers 17a and 17b. The vertical position of each lift rod 10 with respect to each lift rod lever 13 can be easily adjusted by moving the position in the long hole 31 of the lift rod 10 up and down. In particular, the workability is good because the tip of the bar 15 protrudes to the side of the lower frame 3c.

[Second Embodiment]
A second embodiment of the elevator system according to the present invention will be described with reference to FIG. FIG. 4 is an elevational view showing a main part of the emergency stop device of the second embodiment of the elevator system according to the present invention. Portions that are the same as or similar to those in the first embodiment are denoted by common reference numerals, and redundant description is omitted.

  In this embodiment, a bar 15 extending outward in the radial direction is directly attached to the shaft 11 in the first embodiment. In the example of FIG. 4, only one roller 17 and one spring 16 are attached to the bar 15, and the outer periphery of the shaft 11 is in contact with the inner surface near the upper end of the lift rod 10. The bar 15 passes through the long hole 31 of the lift rod 10, the roller 17 is in contact with the outside of the lift rod 10 penetrating portion, the spring 16 is further outside, and the retaining member 32 is further outside.

  Even in such a configuration, as in the first embodiment, when the shaft 11 rotates counterclockwise, the bar 15 rotates in the same direction, and the retaining portion 32 extends in the upper right direction of FIG. Move. At this time, the extension of the spring 16 raises the lift rod 10 while maintaining the contact between the roller 17 and the outer surface of the lift rod 10.

  Moreover, since the upper part of the lift rod 10, the roller 17, and the retaining member 32 protrude laterally from the lower frame 3c, the height adjustment operation of the wedge can be easily performed. Further, according to this embodiment, since the lever 13 is not required as compared with the first embodiment, the number of components can be reduced, and a smaller safety driving device can be configured.

[Third Embodiment]
A third embodiment of the elevator system according to the present invention will be described with reference to FIG. FIG. 5 is an elevation view showing a main part of the emergency stop device of the third embodiment of the elevator system according to the present invention. Portions that are the same as or similar to those in the second embodiment are denoted by common reference numerals, and redundant description is omitted.

  This embodiment is a modification of the second embodiment, in which gears 18 and 19 are formed on the outer periphery of the shaft 11 and the contact portion of the lift rod 10 to form a rack and pinion mechanism.

  According to this embodiment, the same effect as the effect of the second embodiment can be obtained, and the slip between the outer periphery of the shaft 11 and the lift rod 10 can be reduced as compared with the second embodiment, and the lift rod 10 can be more firmly held.

[Fourth Embodiment]
A fourth embodiment of the elevator system according to the present invention will be described with reference to FIG. FIG. 6 is an elevational view showing the main part of the emergency stop device of the fourth embodiment of the elevator system according to the present invention. Portions that are the same as or similar to those in the third embodiment are denoted by common reference numerals, and redundant description is omitted.

  This embodiment is a modification of the third embodiment. The lift rod 10 is divided into an upper lift rod first member 10a and a lower lift rod second member 10b, which are lift rod connecting springs. 51 are connected. A long hole 31 through which the bar 15 passes is formed in the lift rod first member 10a. A wedge 14 is attached to the lifted rod second member 10b.

  In the conventional emergency stop device, when the wedge 14 is pulled up and comes into contact with the guide rail 2, the wedge 14 is pulled up by the guide rail 2 with a large force due to the contact, and if the operation of the shaft 11 is insufficient at this time, the lift rod There was also a possibility that 10 was damaged. However, according to this embodiment, when the wedge 14 is pulled up by the guide rail 2 with a large force after the wedge 14 and the guide rail 2 come into contact, even if the shaft 11 does not rotate sufficiently, the lift rod connection When the spring 51 contracts, the rising amount of the wedge 14 is absorbed, and the lift rod 10 can be prevented from being damaged. Further, the same effect as that of the third embodiment can be obtained.

[Fifth Embodiment]
A fifth embodiment of the elevator system according to the present invention will be described with reference to FIG. FIG. 7 is an elevation view showing a main part of the emergency stop device of the fifth embodiment of the elevator system according to the present invention. Portions that are the same as or similar to those in the fourth embodiment are denoted by common reference numerals, and redundant description is omitted.

  This embodiment is a modification of the fourth embodiment, and an electric motor 80 is arranged on the lower beam 3 c so that the shaft 11 can be driven by the belt 52.

  According to this embodiment, in addition to the same effect as that of the fourth embodiment, the shaft 11 is rotated by the electric motor 80, the lift rod 10 is pulled up, the wedge 14 is pulled up, and the safety is operated. Is possible.

[Other Embodiments]
Each embodiment described above is merely an example, and the present invention is not limited thereto.

  For example, in the above-described embodiment, an example in which the safety is arranged on the lower beam 3c of the car is shown. However, the safety can be arranged on the car, or can be attached to a counterweight.

  The features of the above embodiments can be combined in various ways. For example, the shaft 11 driving mechanism by the electric motor 80 and the belt 52 of the fifth embodiment is shown as a modification of the fourth embodiment, but the shaft driving mechanism by the electric motor and the belt is added to the first to third embodiments. It may be added. Further, the shaft driving mechanism by the electric motor is not limited to the belt transmission, and a gear, a chain, or the like can be used, or direct driving can be performed by directly connecting the rotating shaft.

The elevation view which shows the principal part of the emergency stop apparatus of 1st Embodiment of the elevator system which concerns on this invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an elevational view showing an emergency stop device and its surroundings according to a first embodiment of an elevator system according to the present invention. The typical sectional side view of the safety device of 1st Embodiment of the elevator system which concerns on this invention. The elevation view which shows the principal part of the emergency stop apparatus of 2nd Embodiment of the elevator system which concerns on this invention. The elevation view which shows the principal part of the emergency stop apparatus of 3rd Embodiment of the elevator system which concerns on this invention. The elevation view which shows the principal part of the emergency stop apparatus of 4th Embodiment of the elevator system which concerns on this invention. The elevation view which shows the principal part of the emergency stop apparatus of 5th Embodiment of the elevator system which concerns on this invention.

Explanation of symbols

1: Hoistway 2, 102: Guide rail 3: Car 3a: Floor support frame 3b: Car room 3c: Lower beam (frame)
4, 104: Guide device 5, 105: Safety 6: Safety link 7: Governor rope hitch 7a: Lifting force transmission lever 7b: Connection portion 8: Governor rope 9: Governor 9a: Governor rope grip portion 9b: Governor tensioner 10: Lift rod 10a : Lift rod first member 10b: Lift rod second member 11: Shaft 13: Lift rod lever 14: Wedge 15: Bars 16a and 16b: Spring 17a and 17b: Roller 20: Safety link rod 25: Spring 30: Bar attachment Plate 31: Long hole (lift rod through hole)
32: Stopper 40: Safety link lever 51: Lift rod coupling spring 52: Belt 60: Stop pin 80: Electric motor

Claims (8)

A guide rail extending vertically in the hoistway;
A car and a counterweight that move up and down along the guide rail in the hoistway;
A governor attached to the hoistway;
A governor rope hanging from the governor;
A governor rope hitch coupled to the governor rope;
A frame fixed to at least one of the car and the counterweight;
A shaft that is rotatable about a horizontal axis with respect to the frame and interlocked with the governor rope hitch;
A bar fixed to the shaft and extending in a direction perpendicular to the rotation axis of the shaft;
A retainer attached to the bar;
It has a lift rod through hole, the bar passes through the lift rod through hole and engages with the bar, and the engagement is maintained by the retaining member, and the bar is rotated to move up and down with respect to the frame. A lift rod driven by
It is driven by said lift rods, when the governor rope is raised or lowered at a rate greater than a predetermined speed, relatively upper and lower driven in either direction relative to the frame pressed against the guide rail A wedge that generates a braking force,
Two rollers having a roller through-hole through which the bar penetrates the portion where the bar penetrates the lift rod through-hole,
A spring pressing these two rollers against the lift rod;
An elevator system characterized by comprising: A lift rod lever fixed to the shaft;
The elevator system according to claim 1, wherein the bar is fixed to the lift rod lever . A guide rail extending vertically in the hoistway;
A car and a counterweight that move up and down along the guide rail in the hoistway;
A governor attached to the hoistway;
A governor rope hanging from the governor;
A governor rope hitch coupled to the governor rope;
A frame fixed to at least one of the car and the counterweight;
A shaft that is rotatable about a horizontal axis with respect to the frame and interlocked with the governor rope hitch;
A bar fixed to the shaft and extending in a direction perpendicular to the rotation axis of the shaft;
A retainer attached to the bar;
It has a lift rod through hole, the bar passes through the lift rod through hole and engages with the bar, and the engagement is maintained by the retaining member, and the bar is rotated to move up and down with respect to the frame. A lift rod driven by
Driven by the lift rod, when the governor rope is raised or lowered at a speed larger than a predetermined speed, it is driven in either the up or down direction relative to the frame and pressed against the guide rail. A wedge that generates braking force,
Have
The elevator system is configured such that a side surface of the shaft and a side surface of the lift rod are in direct contact with each other . The elevator system according to claim 3 , wherein unevenness that meshes with each other is formed in a contact portion between the shaft and the shaft . A roller having a roller through-hole through which the bar passes and a spring for pressing the roller against the lift rod between the portion through which the bar passes through the lift rod through-hole and the retainer are further provided. The elevator system according to claim 3 or 4 . The elevator system according to any one of claims 1 to 5, wherein the lift rod through hole is a long hole extending in a vertical direction . The lift rod includes a lift rod first member having the lift rod through-hole formed therein, a lift rod second member engaged with the wedge, and the lift rod first member and the lift rod second member. The elevator system according to any one of claims 1 to 6, further comprising a lift rod spring to be connected . An electric motor fixed to the frame;
The elevator system according to any one of claims 1 to 7, wherein the shaft is configured to be rotatable by the electric motor .

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