JP7107129B2 - Elevator sill device and method for replacing elevator sill - Google Patents

Description

The present invention relates to an elevator sill device, a method for replacing an elevator sill and a method for installing an elevator sill.

Patent Document 1 describes an example of an elevator threshold device. In the sill device, the upper and lower positions of the sill are adjusted by vertically extending slots through which bolts and nuts are passed.

JP 2013-245038 A

However, in the sill device described in Patent Document 1, the sill interferes with the door shoe when the sill is replaced. Therefore, the sill device requires removal of the door shoes when the sill is replaced. Therefore, the sill system requires installation of the door shoe and realignment of the door after replacement of the sill.

The present invention was made to solve such problems. SUMMARY OF THE INVENTION It is an object of the present invention to provide an elevator sill device, a method for replacing an elevator sill and a method for installing an elevator sill that does not require door readjustment after sill replacement.

An elevator sill device according to the present invention comprises a sill having a guide groove for guiding a door shoe provided at the lower end of an elevator door; a jack unit that raises and lowers a position supporting the threshold in a range up to a second position where the upper surface of the door shoe is lower than the lower end of the door shoe while the door shoe is attached.

A method for replacing an elevator sill according to the present invention includes a sill having a guide groove for guiding a door shoe provided at the lower end of an elevator door. A jack-down process of lowering the threshold from a higher first position to a second position where the upper surface of the threshold is lower than the lower end of the door shoe with the door shoe attached, and lowering the threshold at the second position with the door shoe attached. and a jack-up step of raising the replaced sill from the second position to the first position with the door shoe attached by a jack unit.

According to these inventions, the threshold has a guide groove for guiding the door shoe provided at the lower end of the elevator door. The jack unit supports the threshold from below so as to be movable in the range from the first position to the second position in a state where the door shoe is attached. In the first position, the upper surface of the threshold is higher than the lower edge of the door shoe. In the second position, the upper surface of the threshold is lower than the lower edge of the door shoe. The threshold is replaced at the second position. This replaces the sill without requiring readjustment of the door.

1 is a configuration diagram of an elevator provided with a threshold device according to Embodiment 1; FIG. 1 is a front view of a threshold device according to Embodiment 1. FIG. 1 is a side view of a threshold device according to Embodiment 1. FIG. 1 is a side view of a threshold device according to Embodiment 1. FIG.

A mode for carrying out the present invention will be described with reference to the accompanying drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and overlapping descriptions are appropriately simplified or omitted.

Embodiment 1.
FIG. 1 is a configuration diagram of an elevator provided with a threshold device according to Embodiment 1. FIG.

An elevator 1 is provided in a building 2 . The building 2 comprises multiple floors. In the elevator 1, a hoistway 3 passes through multiple floors. The elevator 1 includes a hoisting machine 4, a counterweight 5, and a car 6. The hoist 4 is, for example, a device that generates a driving force using a motor. The hoist 4 is provided in the hoistway 3, for example. The counterweight 5 is a device that travels up and down inside the hoistway 3 by the driving force generated by the motor of the hoisting machine 4 . The car 6 is a device that transports users between a plurality of floors by traveling up and down inside the hoistway 3 with the driving force generated by the motor of the hoisting machine 4 . The car 6 has a car door 7 . A car door 7 is provided on a side surface of the car 6 . The car door 7 is a device that opens and closes so that a user can get on and off the car 6 when the car 6 is stopped at one of a plurality of floors. The car door 7 is, for example, a double door. Car door 7 is an example of a door of elevator 1 .

In the elevator 1 , a landing 8 is provided on each floor of the building 2 . The landing 8 is connected to the hoistway 3 by a landing doorway. The landing doorway is an opening that connects the landing 8 and the hoistway 3 . The elevator 1 includes a landing door 9, a door hanger 10 and a threshold device 11. - 特許庁The landing door 9 is provided at the landing doorway of each floor. The landing door 9 is a device that opens and closes following the car door 7 so that the user can get on and off the car 6 . The landing door 9 is, for example, a double door. The landing door 9 is an example of a door of the elevator 1 . The door hanger 10 is a part that supports the upper end of the hall door 9 so as to be movable in the opening/closing direction. The opening/closing direction is the horizontal direction. The door hanger 10 is provided on the hoistway 3 side of the landing doorway. The door hanger 10 is provided above the landing doorway. The threshold device 11 is a device that guides the opening and closing of the landing door 9 . The threshold device 11 is provided on the side of the hoistway 3 from the entrance/exit of the landing. The threshold device 11 is provided below the entrance/exit of the landing.

2 is a front view of the threshold device according to Embodiment 1. FIG.

The landing door 9 has a door shoe 12. - 特許庁A door shoe 12 is provided at the lower end of the landing door 9 . The door shoe 12 is a member guided by the threshold device 11 when the landing door 9 is opened and closed.

The sill device 11 includes a sill 13 , a support unit 14 , a jack unit 15 and a pair of stiffeners 16 .

The threshold 13 is a plate extending in the opening/closing direction of the landing door 9 . The threshold 13 has a guide groove 17 . The guide groove 17 is a groove that guides the door shoe 12 when the landing door 9 is opened and closed. The width of the guide groove 17 is wider than the width of the door shoe 12. - 特許庁The guide groove 17 extends in the opening/closing direction of the landing door 9 . The direction in which the guide groove 17 extends is parallel to the direction in which the threshold 13 extends.

The support unit 14 is fixed to the inner wall of the hoistway 3 below the landing doorway. Support unit 14 comprises a plurality of supports 18 . Each of the multiple supports 18 includes a bracket 19 and an anchor bolt 20. As shown in FIG. The bracket 19 is, for example, an L-shaped angle member. Bracket 19 has a vertical surface 21 and a horizontal surface 22 . The vertical surface 21 faces the inner wall of the hoistway 3 . The horizontal plane 22 is a plane perpendicular to the vertical plane 21 . Bracket 19 has a through hole in vertical surface 21 . Bracket 19 has a through hole in horizontal plane 22 . The bracket 19 may have a reinforced portion spanning the vertical plane 21 and the horizontal plane 22 . The anchor bolt 20 is a member that fixes the bracket 19 to the inner wall of the hoistway 3 . Anchor bolts 20 are passed through through-holes in vertical surface 21 of bracket 19 . Anchor bolts 20 are driven into the inner wall of the hoistway 3 .

The jack unit 15 includes multiple jacks 23 . Each of the plurality of jacks 23 is a device that supports the threshold 13 from below. Each of the plurality of jacks 23 is supported from below by each of the plurality of supports 18 . Each of the multiple jacks 23 includes a seat 24 , a jack bolt 25 and a nut 26 . The seat 24 is a flat member. The upper surface of the seat 24 faces the lower surface of the threshold 13 . The seat 24 is a portion of the threshold 13 that receives the load. A seat 24 is provided at the upper end of the jack 23 . The jack bolts 25 are oriented vertically. A jack bolt 25 is passed through a through hole in the horizontal surface 22 of the bracket 19 . The upper end of the jack bolt 25 is provided on the lower surface of the receiving seat 24 . The nut 26 is a member that adjusts the vertical position of the seat 24 . The nut 26 is passed through the jack bolt 25 . A nut 26 is provided above the horizontal surface 22 of the bracket 19 . The vertical position of each seat 24 of the plurality of jacks 23 is independently moved up and down.

The jack unit 15 includes an odd number of jacks 23, for example. At this time, the support unit 14 includes the same number of supports 18 as the jacks 23 included in the jack unit 15 . One of the odd number of jacks 23 supports below the center of gravity G of the threshold 13 . The jack 23 is an example of a first jack. The center of gravity G of the threshold 13 is, for example, the center in the horizontal direction. The rest of the odd number of jacks 23 are provided at symmetrical positions with respect to the center of the threshold 13, for example. Any of the remaining jacks 23 is an example of a second jack.

Each of the pair of reinforcements 16 is a member that reinforces the threshold 13 . Each of the pair of reinforcements 16 is provided at each of the lateral ends of the threshold 13 . Each of the pair of reinforcements 16 includes a fixing bracket 27 , a fixing bolt 28 and a movable plate 29 . The fixture 27 is, for example, an L-shaped angle member. The fixture 27 has an attachment surface 30 and an adjustment surface 31 . The mounting surface 30 faces the inner wall of the hoistway 3 . The adjustment surface 31 is a surface perpendicular to the mounting surface 30 . The normal line of the adjustment surface 31 faces the left-right direction. The fixing bracket 27 has a through hole in the mounting surface 30 . The fixing bracket 27 has an elongated hole in the adjusting surface 31 . The long hole extends vertically. The fixing bolt 28 is a member that fixes the fixing bracket 27 to the inner wall of the hoistway 3 . The fixing bolt 28 is passed through the through hole of the mounting surface 30 of the fixing bracket 27 . A fixing bolt 28 is driven into the inner wall of the hoistway 3 . The movable plate 29 is a plate-like member. The movable plate 29 has two through holes. The two through holes are arranged vertically. The lower through-hole of the movable plate 29 is aligned with the elongated hole of the adjustment surface 31 of the fixture 27 . The movable plate 29 is fixed to the fixture 27 by, for example, bolts and nuts. The position of the movable plate 29 is adjusted by the elongated hole of the fixture 27 . The upper through-hole of the movable plate 29 is aligned with the height of the lateral end of the threshold 13 . The movable plate 29 fixes the lateral ends of the threshold 13 with, for example, bolts.

Next, a method for replacing the threshold 13 will be described with reference to FIGS. 3 and 4. FIG.
3 and 4 are side views of the threshold device according to Embodiment 1. FIG. 3 and 4, the pair of stiffeners 16 are not shown.

A worker replaces the threshold 13 from above the car 6 of the hoistway 3, for example. In the replacement work of the threshold 13 , the door shoe 12 is in a state of being attached to the landing door 9 .

In FIG. 3 the threshold 13 is shown in the first position. The first position is a position where the upper surface of the threshold 13 is higher than the height of the lower end of the door shoe 12 in the attached state. That is, the upper surface of the threshold 13 is higher than the lower end of the door shoe 12 in the first position. Here, when a plurality of door shoes 12 are provided in the landing door 9, the first position is such that the upper surface of the threshold 13 is higher than any of the heights of the lower ends of the plurality of door shoes 12 in the attached state, for example. position.

First, the worker performs the work of the release process. In the releasing process, the worker removes the fixing of the pair of reinforcing members 16 by, for example, removing the bolts fixing the movable plates 29 of the pair of reinforcing members 16 to the left and right ends of the threshold 13 . Release.

Next, the worker performs the work of the jack-down process. In the jack-down process, the worker lowers the threshold 13 from the first position to the second position by using the jacks 23 .

In FIG. 4 the threshold 13 is shown in the second position. The second position is a position where the upper surface of the threshold 13 is lower than the height of the lower end of the door shoe 12 in the attached state. That is, the upper surface of the threshold 13 is lower than the lower end of the door shoe 12 in the second position. Here, when a plurality of door shoes 12 are provided in the landing door 9, the second position is such that the upper surface of the threshold 13 is lower than the height of the lower end of each of the plurality of door shoes 12 in the attached state, for example. position.

In the jack-down process, the worker moves each of the plurality of jacks 23 upward by rotating the nut 26 . Each of the multiple jacks 23 is lowered until the nut 26 hits the horizontal surface 22 of the bracket 19 . Nuts 26 are moved independently for each of the plurality of jacks 23 . That is, the vertical position of each seat 24 of the plurality of jacks 23 is adjusted independently. When any one of the plurality of jacks 23 supports the lower part of the center of gravity G of the threshold 13 , the worker lowers the jack 23 after the other jacks 23 . The operator may lower the position of each of the receiving seats 24 of the plurality of jacks 23 in the vertical direction little by little so that the threshold 13 does not tilt.

Next, the worker performs the work of the replacement process. In the replacement process, the worker replaces the threshold 13, for example, as follows. The worker pulls the threshold 13 at the second position toward the center of the hoistway 3 and removes it from the seats 24 of the jacks 23 . A worker puts a new threshold 13 on the abutments 24 of a plurality of jacks 23. - 特許庁

Next, the worker performs the work of the jack-up process. In the jack-up process, the worker raises the threshold 13 from the second position to the first position by using the jacks 23 . In the jack-up process, the worker moves each of the plurality of jacks 23 downward by rotating the nut 26 . Each of the plurality of jacks 23 is lifted by the nut 26 hitting the horizontal surface 22 of the bracket 19 . A worker raises the jack 23 before the other jacks 23 when any one of the plurality of jacks 23 supports the lower part of the center of gravity G of the threshold 13 . The operator may gradually raise the positions of the receiving seats 24 of the plurality of jacks 23 in the vertical direction so that the threshold 13 does not tilt. In the jack-up process, the worker performs the work while adjusting the horizontal position of the threshold 13 so that the door shoe 12 enters the guide groove 17 .

Next, the worker performs the work of the restoration process. In the restoration process, the worker fixes the pair of reinforcing members 16 by, for example, attaching bolts that fix the movable plates 29 of the pair of reinforcing members 16 to the left and right ends of the threshold 13 . .

Next, a method for installing the threshold 13 will be described.

A worker installs the threshold 13 from above the car 6 of the hoistway 3, for example. In the installation work, the door shoe 12 is in a state of being attached to the hall door 9, for example.

First, the worker performs the fixing process. In the fixing step, the worker fixes the support unit 14 to the inner wall of the hoistway 3 below the landing doorway. The support unit 14 is fixed by, for example, driving an anchor bolt 20 into each of the plurality of supports 18 .

Next, the worker performs the work of the adjustment process. In the adjustment process, the worker adjusts the vertical position of the threshold 13 by moving the threshold 13 up and down in a range including the first position to the second position using the plurality of jacks 23 . The sill 13 rests on a seat 24. - 特許庁The position of the threshold 13 is adjusted from below the first position, for example. The position of the threshold 13 is adjusted based on, for example, reference marks marked on the inner wall of the hoistway 3 . The position of the threshold 13 is adjusted, for example, based on a plumb bob lowered from the upper portion of the hoistway 3 . In the adjustment process, the worker continuously adjusts the position of the threshold 13 by using the jack bolts 25 of each of the plurality of jacks 23 . A worker raises the jack 23 before the other jacks 23 when any one of the plurality of jacks 23 supports the lower part of the center of gravity G of the threshold 13 . The operator may gradually raise the positions of the receiving seats 24 of the plurality of jacks 23 in the vertical direction so that the threshold 13 does not tilt.

Next, the worker performs the work of the reinforcement process. In the reinforcing process, the worker fixes the pair of reinforcing members 16 by, for example, attaching bolts that fix the movable plates 29 of the pair of reinforcing members 16 to the left and right ends of the threshold 13 . .

As described above, the threshold device 11 according to Embodiment 1 includes the threshold 13 and the jack unit 15 . The threshold 13 has a guide groove 17 . The guide groove 17 guides the door shoe 12 . A door shoe 12 is provided at the lower end of the landing door 9 . The jack unit 15 supports the threshold 13 from below. The jack unit 15 raises and lowers the position for supporting the threshold 13 in the range from the first position to the second position with the door shoe 12 attached. In the first position, the top surface of the threshold 13 is higher than the bottom edge of the door shoe 12 . In the second position, the upper surface of the threshold 13 is lower than the lower edge of the door shoe 12 .

Moreover, the replacement method of the threshold 13 according to Embodiment 1 includes a jack-down process, a replacement process, and a jack-up process. In the jack-down process, the threshold 13 is lowered from the first position to the second position by the jack unit 15 while the door shoe 12 is attached. In the replacement step, the threshold 13 at the second position is replaced with the door shoe 12 attached. In the jack-up process, the replaced threshold 13 is raised from the second position to the first position by the jack unit 15 while the door shoe 12 is attached.

Moreover, the installation method of the threshold 13 according to Embodiment 1 includes a fixing step and an adjusting step. In the fixing step, the support unit 14 is fixed to the inner wall of the hoistway 3 below the landing doorway of the elevator 1 . The support unit 14 receives the load of the threshold 13 below the threshold 13 . In the adjustment process, the position of the threshold 13 is adjusted by moving the threshold 13 up and down in a range including from the first position to the second position using the jack unit 15 . The first position is a position where the upper surface of the threshold 13 is higher than the height of the lower end of the door shoe 12 in the attached state. The second position is a position where the upper surface of the threshold 13 is lower than the height of the lower end of the door shoe 12 in the attached state.

The jack unit 15 supports the threshold 13 from below so as to be movable in the range from the first position to the second position in a state where the door shoe 12 is attached. In the first position, the top surface of the threshold 13 is higher than the bottom edge of the door shoe 12 . In the second position, the upper surface of the threshold 13 is lower than the lower edge of the door shoe 12 . The threshold 13 is replaced in the second position. Therefore, the worker can replace the threshold 13 without removing the door shoe 12. - 特許庁This allows the threshold 13 to be replaced without requiring readjustment of the landing door 9 . Therefore, the work burden on the worker due to the replacement of the threshold 13 is reduced.

The operator can continuously adjust the position of the threshold 13 by means of the jack unit 15 . The jack unit 15 raises and lowers the position supporting the threshold 13 while supporting the threshold 13. - 特許庁Therefore, the worker does not need parts such as spacers to adjust the position of the threshold 13 . Therefore, it is possible to prevent parts such as spacers from being dropped on the hoistway 3, for example.

The threshold device 11 also comprises a support unit 14 . The support unit 14 is fixed to the inner wall of the hoistway 3 below the landing doorway of the elevator 1 . The support unit 14 supports the jack unit 15 from below.

A landing door 9 is provided on each floor of the building 2 . That is, in the elevator 1 , the hall doors 9 are provided by the number of floors of the building 2 . For this reason, the work load on the worker due to the replacement of the threshold 13 is reduced by the number of floors of the building 2 .

The support unit 14 supports the jack unit 15 from below. The support unit 14 receives the load of the sill 13 below the sill 13 through the jack unit 15 . Therefore, the position of the threshold 13 is less likely to shift than when the jack unit 15 is supported by friction between the vertical surfaces 21 . Therefore, it becomes easier to adjust the position of the threshold 13 .

Also, the jack unit 15 raises and lowers the position where the threshold 13 is supported by the jack bolts 25 .

The jack unit 15 is realized with a simple structure. As a result, the maintenance and inspection of the threshold device 11 itself is not complicated.

The threshold device 11 also includes a reinforcing member 16 . The reinforcing member 16 fixes the lateral ends of the threshold 13 from the lateral direction.

Moreover, the method for replacing the threshold 13 includes a releasing process and a restoring process. In the releasing process, the fixation of the reinforcing member 16 is released before the jacking down process. In the restoration process, the lateral ends of the threshold 13 are fixed to the reinforcements 16 after the jack-up process.

Moreover, the installation method of the threshold 13 is provided with a reinforcement process. In the reinforcement process, the lateral ends of the threshold 13 are fixed to the reinforcements 16 after the adjustment process.

As a result, even when the elevator 1 is used, the position of the threshold 13 is less likely to shift. Further, when the fixing of the reinforcing member 16 is released, the threshold 13 is not interfered with by the reinforcing member 16 during vertical movement. As a result, the vertical movement of the threshold 13 during replacement, installation and adjustment of the threshold 13 is facilitated.

Also, the jack unit 15 includes a first jack and a second jack. The first jack supports the sill 13 below the center of gravity G. The second jack supports the lower part of the threshold 13 and moves up and down independently of the first jack.

Also, in the jack-down process, the first jack is lowered after the second jack. In the jack-up process, the first jack is raised before the second jack.

Also, in the adjustment process, the first jack is raised before the second jack.

The seat 24 of the first jack is at a higher position than the seat 24 of the second jack. Therefore, the sill 13 moves up and down while the center of gravity G is supported by the first jack 23 . This makes it difficult for the threshold 13 to tilt when moving up and down. The vertical movement of the threshold 13 during replacement, installation and adjustment of the threshold 13 is facilitated.

The threshold device 11 may be a device that guides the car door 7 of the elevator 1 . The support unit 14 may for example be fixed to the lower beam of the car 6 of the elevator 1 .

Also, the jack unit 15 may include an even number of jacks 23, for example. At this time, the support unit 14 includes the same number of supports 18 as the jacks 23 included in the jack unit 15 . The jack unit 15 may have only one jack 23 . At this time, the support unit 14 has only one support 18 .

Also, the jack unit 15 may include, for example, a pantograph jack. The jack unit 15 may comprise a telescoping pipe support whose length is fixed by pins, for example.

The sill 13 may also be fixed to the seats 24 of a plurality of jacks 23, for example by bolts and nuts. The underside of sill 13 and seat 24 may have, for example, through holes, slots, notches or slots for the passage of bolts and nuts. In this case, for example, in the replacement process, the worker removes and attaches the bolts and nuts that secure the threshold 13 to the seats 24 of the jacks 23 .

The car door 7 and the landing door 9 may be single-opening doors, for example. The threshold 13 may have a plurality of guide grooves 17 .

In addition, the door shoe 12 or the landing door 9 may not be attached in the installation work of the threshold 13 . In the fixing process, the support unit 14 may be fixed with the jack unit 15 and the threshold 13 attached.

Moreover, the replacement work of the threshold 13 or the installation work of the threshold 13 may be performed from inside the landing 8 or the car 6 .

1 elevator 2 building 3 hoistway 4 hoisting machine 5 counterweight 6 car 7 car door 8 landing 9 landing door 10 door hanger 11 threshold device 12 door shoe 13 threshold 14 Support unit 15 Jack unit 16 Reinforcement 17 Guide groove 18 Support 19 Bracket 20 Anchor bolt 21 Vertical surface 22 Horizontal surface 23 Jack 24 Catch 25 Jack bolt 26 Nut 27 Fixing Bracket 28 Fixing bolt 29 Movable plate 30 Mounting surface 31 Adjusting surface

Claims (8)

a threshold having a guide groove for guiding a door shoe provided at the lower end of an elevator door;
The door shoe supports the threshold from below and supports the threshold in a range from a first position where the upper surface of the threshold is higher than the lower end of the door shoe to a second position where the upper surface of the threshold is lower than the lower end of the door shoe. A jack unit that moves up and down in a state where is attached,
An elevator sill device comprising: The elevator threshold device according to claim 1, further comprising: a support unit fixed to an inner wall of a hoistway below a landing doorway of the elevator and supporting the jack unit from below. 3. The elevator threshold device according to claim 1, wherein said jack unit raises and lowers a position supporting said threshold with a jack bolt. The elevator threshold device according to any one of claims 1 to 3, further comprising a reinforcing member that fixes the lateral end of the threshold from the lateral direction. The jack unit comprises a first jack that supports a lower portion of the center of gravity of the threshold, and a second jack that supports a lower portion of the threshold and moves up and down independently of the first jack. An elevator threshold device according to any one of the preceding claims. A sill having a guide groove for guiding a door shoe provided at the lower end of an elevator door is lifted from a first position where the upper surface of the sill is higher than the lower end of the door shoe by a jack unit that supports the sill from below. a jack-down step in which the door shoe is lowered to a second position lower than the lower end of the door shoe;
a replacement step of replacing the threshold at the second position with the door shoe attached;
a jack-up step of raising the replaced threshold from the second position to the first position by the jack unit with the door shoe attached;
A method for replacing an elevator threshold comprising: A release step of releasing the fixation of the reinforcing member fixing the lateral end portion of the threshold from the lateral direction before the jacking down step;
After the jack-up step, a restoration step of fixing the left and right ends of the threshold to the reinforcing tool;
7. The method of replacing an elevator threshold according to claim 6, comprising: In the jack-down step, the first jack of the jack unit that supports the lower part of the center of gravity of the threshold is lowered after the second jack of the jack unit that supports the lower part of the threshold and moves up and down independently of the first jack. let
8. The method of replacing a threshold of an elevator according to claim 6 or 7, wherein in said jack-up step, said first jack is raised before said second jack.

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