JP2006206272A - Pit access device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pit access device for an elevator allowing an operator to get in and out to/from the pit of an elevator simply without complicated procedures. <P>SOLUTION: A scaffold 7 has two footboards 8 and 9, and in a position mating with a gateway at an elevator hall 4, is installed in the pit 3 alongside the side wall on the hall side of the pit 3, where stairs are formed consisting of a landing floor surface 4a, the footboards 8 and 9, and a pit floor surface 3a. A pair of cuts are formed on both sides about the width direction of a toe protecting plate 5 in such a way as extending plumb upward from the bottom of the toe protecting plate 5. A thin and long opening 10 is formed in the footboard 8 close to the side wall on the hall 4 side of the pit 3 so as to admit insertion of the part pinched by the cuts of the toe protecting plate 5 when an elevator car 1 lands on the undermost hall 4 and so that the outside part in longitudinal direction of the opening 10 is inserted into the cuts. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pit entry / exit device that allows maintenance personnel to enter and exit during maintenance inspection work in an elevator pit.

In a conventional elevator pit exit / entry device, a ladder is installed in a substantially vertical state in the vicinity of a side wall portion on the landing side of the pit, and a gripping member is attached to the rear surface on the pit side of the landing door (for example, Patent Document 1). reference).
Then, the maintenance person opens the landing door to form an entrance / exit opening, and from the entrance / exit opening, uses the gripping member as a clue to step on the ladder and descends into the pit. Therefore, the maintenance staff performs maintenance and inspection of each device installed in the pit.
However, the ladder is attached in a substantially vertical state in the vicinity of the side wall on the landing side of the pit in order to avoid interference with the toe protection plate installed in a suspended state from the sill of the car. Therefore, the maintenance staff gets down in the vertical posture with the holding member as a clue in a posture facing backwards, that is, with the back facing the pit side, so it gets down into the maintenance staff's pit. Operation becomes unstable.

  In view of this situation, the sliding ladder is retracted and attached to the pit landing side wall near the side wall so as to be detachable and attached to the vertical position. There has been proposed a maintenance inspection method for an elevator that extends and leans between the platform sill and the pit floor surface, and a maintenance worker uses the ladder to descend into the pitch (for example, see Patent Document 2). .

Japanese Utility Model Publication No. 6-37261 JP 2002-293486 A

In conventional pit entry / exit devices, maintenance personnel get off the ladder installed in a vertical state with the holding member as a clue in a backward-facing posture, so the operation of getting down into the pit of the maintenance personnel is unstable. There was a problem of becoming something.
Also, with the conventional elevator maintenance inspection method, the ladder is lifted from the pit to the landing at the start of the maintenance inspection, and the ladder is extended and leaned between the landing sill and the pit floor, and at the end of the maintenance inspection. There is a problem that an extremely complicated work of lifting and shrinking the existing ladder to the landing site and attaching it to the side wall of the pit from the landing site is required for every maintenance inspection.

  This invention was made to solve the above-mentioned problem, and a toe protection plate and a footrest, which are installed in a pit in a pit with a foothold with a footboard assembled in a staircase shape, It is an object of the present invention to obtain an elevator pit entry / exit device that allows maintenance personnel to easily enter and exit the pit without complicated work.

  The elevator pit exit / entry device according to the present invention has at least one footboard, and is installed in the pit along the side wall on the landing side of the pit at a position corresponding to the entrance of the landing on the lowest floor, A platform that forms a staircase composed of the landing floor of the lowest floor, the footboard and the pit floor, and a toe protection plate attached in a suspended state to a car sill, a pair of notches, The toe protection plate is extended vertically upward from the lower end of the toe protection plate at both side positions in the width direction of the toe protection plate, and the elongated opening portion is provided when the car is landed on the landing on the lowest floor. The tread board close to the side wall on the landing side of the pit so that a portion sandwiched between the pair of notches is inserted and a portion outside the opening in the longitudinal direction is inserted into the notch Is perforated It is intended.

  According to the present invention, since the interference (collision) between the toe protection plate and the footboard during normal operation of the elevator is avoided, the scaffolding can be permanently installed in the pit. At the time of maintenance inspection, maintenance personnel can easily enter and exit the pit without complicated work by using the staircase composed of the landing floor surface, the footboard and the pit floor surface of the lowest floor.

Embodiments of the present application will be described below with reference to the drawings.
FIG. 1 is a cross-sectional view schematically showing a state in which a car in an elevator to which an apparatus for entering and exiting a pit according to one embodiment of the present invention is applied is landed on the lowest floor, and FIG. 2 is a pit according to one embodiment of the present invention. It is a perspective view which shows the structure of the apparatus for entering / exiting typically.

  In each figure, a car 1 is disposed in a hoistway so that it can be raised and lowered, and a shock absorber 2 is installed on the floor of a pit 3 that is the bottom of the hoistway. The toe protection plate 5 is installed in a suspended state from the sill of the car 1, and a scaffolding platform 7 for maintenance personnel to enter and exit the pit 3 is installed in the pit 3. Here, the toe protection plate 5 and the scaffolding stand 7 constitute a pit entry / exit device.

The toe protection plate 5 is formed in a rectangular flat plate shape made of, for example, a steel plate, is suspended from the sill of the car 1, and is opposed to the side wall surface on the landing 4 side of the hoistway. A pair of cutouts 6 extend vertically upward from the lower end of the toe protection plate 5 at a predetermined distance in the width direction of the toe protection plate 5. Thereby, the lower end side of the toe protection plate 5 is divided into three parts: a tongue piece 5 a sandwiched between a pair of notches 6 and an outer side piece 5 b of each notch 6.
The scaffold base 7 is configured by assembling first and second tread plates 8 and 9 made of, for example, a steel plate in a staircase shape using a pedestal 11. The scaffold base 7 is fixedly attached to the floor surface of the pit 3 with the first footboard 8 in a position corresponding to the entrance / exit of the landing 4 and close to the side wall of the pit 3 on the landing 4 side. Thereby, a stair that gradually shifts to the center side of the pit 3 from the floor surface 4a of the landing 4 on the lowest floor to the first footboard 8, the second footboard 9 and the floor surface 3a of the pit 3 is formed. An elongated opening 10 is formed in the first tread plate 8 so that the longitudinal direction of the opening coincides with the width direction of the entrance / exit of the landing 4.

  Here, since the toe protection plate 5 generally has a hanging length of about 0.8 m, the first step plate 8 of the scaffolding platform 7 located on the wall surface side of the landing 4 side of the pit 3 is a car. When 1 is landed on the lowest floor, it is located where it collides with the toe protection plate 5. Therefore, the opening 10 is formed in a position and shape into which the tongue piece 5a of the toe protection plate 5 is inserted when the car 1 reaches the lowest floor. Further, the notch 6 is formed in a position and a shape in which portions on both sides of the opening 10 of the first step board 8 are inserted when the car 1 is landed on the lowest floor.

In the elevator to which the apparatus for entering and exiting a pit configured as described above is applied, when the car 1 is landed on the lowest floor, the tongue pieces 5a are inserted into the opening portion 10, and the both sides of the opening portion 10 of the first footboard 8 are inserted. A part is inserted into each notch 6, and the collision between the toe protection plate 5 and the scaffold base 7 during normal operation is avoided.
At the time of maintenance inspection, the car 1 is stopped away from the lowest floor. Then, the maintenance staff goes down the stairs composed of the floor surface 4a of the landing 4, the first footboard 8, the second footboard 9 and the floor surface 3a of the pit 3, enters the pit 3, and is installed in the pit 3. Maintenance and inspection can be performed. When the maintenance inspection is completed, the maintenance staff can climb from the pit 3 to the second tread board 9, the first tread board 8, and the landing 4 and exit from the pit 3.

Thus, according to the present invention, when the car 1 is landed on the lowest floor, the opening 10 into which the tongue piece 5a of the toe protection plate 5 is inserted is formed in the first step plate 8, and the first Since the notches 6 into which the portions on both sides of the opening 10 of the footboard 8 are inserted are formed in the toe protection plate 5, interference (collision) between the toe protection plate 5 and the first footboard 8 is avoided, and the first And the scaffold base 7 which assembled | attached the 2nd treads 8 and 9 stepwise using the pedestal 11 can be permanently installed in the pit 3. FIG. As a result, the maintenance staff goes down the stairs composed of the floor surface 4a of the landing 4, the first footboard 8, the second footboard 9 and the floor surface 3a of the pit 3 and enters the pit 3 during the maintenance inspection. When the maintenance inspection is completed, it is possible to go up from the pit 3 by climbing the stairs.
Therefore, at the time of maintenance inspection, the shrunk ladder is lifted from the pit 3 to the landing 4, the ladder is extended and leaned between the sill of the landing 4 and the floor surface 3 a of the pit 3, and further, the suspended ladder is The troublesome work of pulling up to the landing 4 and shrinking it and attaching it to the side wall of the pit 3 from the landing 4 is not necessary, and the workability of maintenance inspection is improved.
Further, in a posture that faces backward, that is, in a posture facing back to the pit 3 side, the holding member is a clue, and the pit 3 is not lowered from a ladder that is attached in a vertical state in the vicinity of the side wall of the pit 3. You can get inside.

  In the above embodiment, the scaffolding base is constructed by assembling two footboards in a staircase shape, but the number of footboards is not limited to two and is appropriately set according to the depth of the pit. do it. In other words, if the depth of the pit is 1.5 m, for example, a scaffold with a step height of 50 cm may be manufactured using two footboards. In addition, if the depth of the pit is 1.2 m, for example, a scaffolding platform having a step height of 40 cm may be manufactured using two footboards, or a step height using one footboard. A scaffold with a height of 60 cm may be produced.

It is sectional drawing which shows typically the state in which the cage | basket | car in the elevator to which the apparatus for pit entrance / exit which concerns on one Example of this invention was applied landed on the lowest floor. It is a perspective view which shows typically the structure of the apparatus for pit entrance / exit based on one Example of this invention.

Explanation of symbols

  1 car, 3 pits, 3a floor surface, 4 landing, 4a floor surface, toe protection plate, 5a tongue, 6 notch, 7 scaffolding base, 8 first foot plate, 9 second foot plate, 10 openings, 11 legs Pillar.

Claims (1)

It has at least one step board, is installed in the pit along the side wall on the landing side of the pit at a position corresponding to the entrance of the lowest floor landing, the floor floor of the lowest floor, the tread board And a scaffolding that constitutes a stairs composed of the pit floor,
A toe protection plate attached to the basket sill in a hanging state,
A pair of cutouts extend vertically upward from the lower end of the toe protection plate at both side positions in the width direction of the toe protection plate,
When the car is landed on the landing on the lowest floor, the elongated opening is inserted into the portion sandwiched between the pair of cutouts of the toe protection plate, and the outside of the opening in the longitudinal direction. An elevator pit entry / exit device characterized in that the part is inserted into the notch so as to be inserted into the notch, and is formed in the tread plate adjacent to the side wall on the landing side of the pit.

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