CN110446676A - Lift appliance - Google Patents

Abstract

In the elevator apparatus, at least a part of the hoistway equipment is provided in the hoistway within the vertical range of the landing entrance and exit of the lowest floor, and the hoistway equipment and the hoistway wall are spaced apart from each other and face each other. The pit ladder has a pair of posts and a plurality of rungs. Moreover, the pit ladder can be rotated between a storage position and a use position. In the storage position, the pit ladder is opposed to the hoistway wall at a position closer to the hoistway wall side than the hoistway equipment. In this use position, the pit ladder is opposite to the hoistway wall. Inclined on the well wall. When viewing the pit ladder from the front, the hoistway equipment is disposed between a pair of pillars. The steps are arranged only outside the range where the pit ladder interferes with the hoistway equipment when the pit ladder is rotated between the storage position and the use position.

Description

Elevator device

technical field

The invention relates to an elevator device, wherein a pit ladder used by operators to enter and exit the pit of the hoistway is arranged in the hoistway.

Background technique

In the conventional elevator pit ladder holding device, the arm member is horizontally fixed to the guide rail. The arm member is provided with a hook member on which the steps of the pit ladder are hooked. Furthermore, a detection switch for detecting attachment or detachment of the pit ladder is provided on the arm member (for example, refer to Patent Document 1).

Furthermore, the pit ladder of the conventional elevator apparatus has a fixed-side pillar, a movable-side pillar, and a plurality of steps. The fixed side pillar is fixed to the car guide rail. The movable side pillar can move horizontally relative to the fixed side pillar between the storage position and the use position. Each step is horizontally installed between the fixed side pillar and the movable side pillar. Furthermore, each step is slidable with respect to the fixed-side strut by the movement of the movable-side strut. Furthermore, when the movable side strut is located at the storage position, a part of each step is arranged on the back of the car guide rail (for example, refer to Patent Document 2).

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2005-263387

Patent Document 2: Japanese Patent Laid-Open No. 2013-220913

Contents of the invention

The problem to be solved by the invention

For example, in machine-room-less elevators, many devices are installed in the hoistway, but it is also required to reduce the planar space of the hoistway as much as possible. Therefore, as shown in Patent Documents 1 and 2, even if it is intended to permanently install a pit ladder in the hoistway, it sometimes interferes with hoistway equipment fixed near the bottom floor, such as an end switch unit, making it difficult to permanently install a pit ladder in the hoistway. ladder.

On the other hand, when storing the pit ladder outside the hoistway, storage space is required, and it takes time and effort to transport the pit ladder during use.

The present invention was made to solve the above-mentioned problems, and an object of the present invention is to obtain an elevator apparatus in which a pit ladder can be permanently installed in the hoistway by efficiently utilizing the space in the hoistway.

means to solve the problem

The elevator apparatus of the present invention includes: a car that moves up and down in the hoistway; and hoistway equipment at least a part of which is installed in the hoistway within the range of the upper and lower direction of the entrance and exit of the landing on the lowest floor, and the hoistway equipment and the hoistway wall are spaced apart from each other. and a pit ladder, which has a pair of pillars and a plurality of steps arranged between the pillars, and is arranged in the hoistway, the pit ladder can be rotated between a storage position and a use position, and in the storage position, the pit The ladder faces the well wall at a position closer to the well wall than the well equipment. In this use position, the pit ladder is inclined relative to the well wall. When the pit ladder is viewed from the front, the well equipment is arranged between a pair of pillars. , the steps are arranged only outside the range where the pit ladder interferes with the hoistway equipment when the pit ladder is rotated between the storage position and the use position.

And, the elevator apparatus of the present invention is provided with: car, and it has operating member, and moves up and down in hoistway; End switch unit, it has the bar-shaped switch supporting member that is arranged along the up and down direction, and is arranged on the switch supporting member and is controlled by the operating member. The end switch of the operation, and the end switch unit is arranged near the bottom layer in the hoistway; Compared with the position, in the use position, the inclination angle of the pit ladder relative to the hoistway wall is relatively large, and a detection switch is provided on the switch supporting part, and the detection switch detects whether the pit ladder is in the storage position.

Invention effect

The elevator device of the present invention can efficiently utilize the space in the hoistway, so that the pit ladder is permanently installed in the hoistway.

Description of drawings

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

Fig. 2 is a side view schematically showing the end switch unit and the pit ladder of Fig. 1 .

Fig. 3 is a front view schematically showing the end switch unit and the pit ladder of Fig. 1 .

Fig. 4 is a side view showing a state in which the pit ladder of Fig. 2 is moved to a use position.

Fig. 5 is a front view schematically showing an end switch unit and a pit ladder of an elevator apparatus according to Embodiment 2 of the present invention.

Detailed ways

Hereinafter, modes for implementing the present invention will be described with reference to the drawings.

Embodiment 1

Fig. 1 is a plan view showing an elevator apparatus according to Embodiment 1 of the present invention, showing a machine-room-less elevator. In the drawing, a car 2 and a counterweight 3 are installed in a hoistway 1 . The car 2 and the counterweight 3 are suspended in the hoistway 1 through the suspension body 21 . The suspension body 21 adopts a plurality of ropes or a plurality of strips.

A traction machine (not shown) is installed on the upper portion of the hoistway 1 . The traction machine has a drive sheave, a motor that rotates the drive sheave, and a brake that brakes the rotation of the drive sheave. A suspension body 21 is hung around the driving sheave. The car 2 and the counterweight 3 move up and down in the hoistway 1 by rotating the drive sheave.

The car 2 has a front surface 2a located on the hall side, a rear surface 2b opposing the front surface 2a, a first side surface 2c, and a second side surface 2d opposing the first side surface 2c. A car doorway 2e is provided on the front surface 2a.

In the hoistway 1, first and second car guide rails 4a, 4b for guiding the lifting and lowering of the car 2, and first and second counterweight guide rails 5a, 5b for guiding the lifting and lowering of the counterweight 3 are provided.

The first car guide rail 4a faces the first side surface 2c. The second car guide rail 4b faces the second side surface 2d. That is, the car 2 is arranged between the first and second car guide rails 4a, 4b. Moreover, the first and second car guide rails 4a, 4b are spaced apart from each other in the width direction of the car 2 (left-right direction in FIG. 1 ) at the same position in the front-rear direction of the car 2 (the up-down direction in FIG. Configured at intervals.

The first and second counterweight guide rails 5a, 5b are arranged at a distance from each other in the width direction of the counterweight 3 (vertical direction in FIG. 1 ). The counterweight 3 is disposed between the first and second counterweight guide rails 5a, 5b. Furthermore, the counterweight 3 is disposed on the side of the lift area of the car 2 so as to face the second side surface 2d when the counterweight 3 is at the same height as the car 2 .

At the lower part of the car 2, first and second car suspending sheaves 6a, 6b are provided. A counterweight suspension wheel 7 is provided on the top of the counterweight 3 . The suspension body 21 has first and second end portions connected to the upper portion inside the hoistway 1 .

Further, the suspension body 21 is wound around the first car suspension sheave 6a, the second car suspension sheave 6b, the driving sheave, and the counterweight suspension sheave 7 in this order from the first end side. That is, the elevator apparatus of FIG. 1 is a 2:1 roping type elevator.

In the vicinity of the lowest floor in the hoistway 1, an end point switch unit 8 as hoistway equipment is provided. The end switch unit 8 is fixed to the second car guide rail 4 b via a support arm 9 . The car 2 is provided with a cam 10 as an operating member for operating the end switch unit 8 .

A pit ladder 11 is provided in the hoistway 1 . The pit ladder 11 is used when a worker enters and exits the hoistway pit 1a from the landing entrance 20 on the lowest floor. Furthermore, the pit ladder 11 is connected to the hoistway wall 1b facing the second side surface 2d via the gangway bracket 12 .

FIG. 2 is a side view schematically showing the end point switch unit 8 and the pit ladder 11 in FIG. 1 , and is a view viewed in the direction of arrow II in FIG. 1 . Moreover, in FIG. 2, the state which the car 2 stopped at the lowest floor is shown.

FIG. 3 is a front view schematically showing the end switch unit 8 and the pit ladder 11 in FIG. 1 , and is a front view viewed in the direction of arrow III in FIG. 1 .

At least a part of the destination switch unit 8 is installed within the range h ( FIG. 2 ) of the vertical direction of the landing entrance 20 on the lowest floor. Furthermore, the end point switch unit 8 is opposed to the hoistway wall 1b with a gap therebetween.

Furthermore, the end switch unit 8 has a rod-shaped switch support member 13 and a plurality of (in this example, three) end switches 14 a , 14 b , and 14 c provided on the switch support member 13 .

The switch supporting member 13 is arranged in the vertical direction. The end switches 14a, 14b, and 14c are arranged at intervals from each other in the vertical direction. Furthermore, when the car 2 reaches the vicinity of the lowest portion of the hoistway 1 , the end switches 14 a , 14 b , and 14 c are operated by the cam 10 .

The pit ladder 11 has a pair of pillars 15a, 15b and a plurality of steps 16 provided between the pillars 15a, 15b. The steps 16 are arranged horizontally at intervals in the vertical direction.

Furthermore, a horizontal shaft 17 is fixed between the upper ends of the pillars 15a, 15b. The ramp bracket 12 is provided with a long hole 12 a through which the shaft 17 passes. The shaft 17 can move up and down along the long hole 12a.

The pit ladder 11 can rotate around the shaft 17 between the storage position ( FIG. 2 ) and the use position ( FIG. 4 ). Opposite the hoistway wall 1b, in this use position the pit ladder 11 is inclined relative to the hoistway wall 1b.

The inclination angle of the pit ladder 11 relative to the hoistway wall 1b when the pit ladder 11 is in the use position is larger than the inclination angle of the pit ladder 11 relative to the hoistway wall 1b when the pit ladder 11 is in the storage position. In this example, when the pit ladder 11 is located at the storage position, the pillars 15a and 15b are vertical and parallel to the hoistway wall 1b.

The lower end portion of the pit ladder 11 is farther away from the hoistway wall 1b when the pit ladder 11 is in the use position than when the pit ladder 11 is in the storage position. The inclination angle of the pit ladder 11 relative to the hoistway wall 1b will not be greater than the inclination angle when the pit ladder 11 is in the use position.

Moreover, in FIG. 3 , the shaft 17 is not connected to the gangway bracket 12 but is connected to the support arm 9 . In this way, the pit ladder 11 may be attached to the support arm 9 shared with the end switch unit 8 instead of the dedicated gangway bracket 12 .

As shown in FIG. 3 , when the pit ladder 11 is viewed from the front, the end switch unit 8 is arranged between a pair of pillars 15a, 15b. Furthermore, the step 16 is arranged only outside the range where it interferes with the end switch unit 8 when the pit ladder 11 is rotated between the storage position and the use position.

That is, the step 16 is arranged only at a position lower than the lower end of the end switch unit 8 . In this example, the lower end of the end switch unit 8 is located near the floor level FL of the lowest floor, and the steps 16 are arranged only below the floor level FL of the lowest floor.

When the pit ladder 11 is in the use position, the upper ends of the pillars 15a, 15b are located above the floor height FL of the lowest floor by 0.6m or more. Furthermore, when the pit ladder 11 is in the use position, all the steps 16 are further away from the hoistway wall 1 b than the end switch unit 8 . That is, when the pit ladder 11 is in the use position, all the steps 16 are located on the car 2 side with respect to the end switch unit 8 when viewed from directly above.

The switch support member 13 is provided with a detection switch 18 for detecting whether or not the pit ladder 11 is located at the storage position. When the pit ladder 11 is stored in the storage position, the contact of the detection switch 18 is closed. Accordingly, the elevator control device (not shown) determines that the pit ladder 11 is located at the storage position.

When the pit ladder 11 moves away from the storage position, the contact of the detection switch 18 is opened. Accordingly, the elevator control device determines that the pit ladder 11 is not located at the storage position, and prohibits normal operation of the car 2 , that is, automatic operation.

Furthermore, in FIGS. 2 to 4 , the positions and directions of the end switches 14 a , 14 b , and 14 c and the detection switch 18 with respect to the switch supporting member 13 are different. However, in reality, the end switches 14 a , 14 b , and 14 c are arranged vertically at positions where the cam 10 can be operated. And the detection switch 18 is arrange|positioned at the position which does not interfere with the cam 10, but contacts the pit ladder 11 which exists in a storage position.

When the worker enters the hoistway pit 1a, the landing doorway 20 on the lowest floor is manually opened while the car 2 is stopped at a position above the lowest floor. Then, the hand is stretched into the hoistway 1 from the landing entrance 20, so that the pit ladder 11 is moved to the use position.

Then, grasp the part of at least one of the pillars 15a, 15b that is higher than the floor level FL, put your feet on the step 16, and transfer to the pit ladder 11. Then, use the pit ladder 11 to go down to the hoistway pit 1a.

When the worker returns from the hoistway pit 1a to the landing on the lowermost floor, the above-described sequence is reversed. After the operator returns to the lowest landing, he extends his hand from the landing into the hoistway 1 to return the pit ladder 11 to the storage position.

In such an elevator apparatus, even if the pit ladder 11 is overlapped with the end switch unit 8 when viewed from the front, the steps 16 are not provided in a range that interferes with the end switch unit 8, so that the pit ladder 11 can be stored in the same position. Rotate between position and use position.

Furthermore, the pillars 15a, 15b are arranged at a position higher than the floor height FL of the lowest floor, and the steps 16 are provided at appropriate intervals in a range where they do not interfere with the end switch unit 8, so that the operator can use the pit ladder 11 to enter and exit the hoistway. Pit 1a.

Therefore, the space in the hoistway 1 can be efficiently used, and the pit ladder 11 can be permanently installed in the hoistway 1 . Furthermore, the degree of freedom of installation of the pit ladder 11 can be improved.

Furthermore, since the steps 16 are arranged only below the floor height FL of the lowest floor, interference between the pit ladder 11 and the end switch unit 8 can be avoided, and workers can easily enter and exit the hoistway pit using the pit ladder 11. 1a.

Furthermore, the lower end of the end switch unit 8 is positioned near the floor level FL of the lowest floor. Furthermore, when the pit ladder 11 is viewed from the front, the end switch unit 8 is easily disposed between the pillars 15a, 15b. Therefore, by selecting the end point switch unit 8 as the hoistway equipment arranged at the same position as the pit ladder 11, the space in the hoistway 1 can be used more efficiently.

Furthermore, since the detection switch 18 is provided on the switch supporting member 13 , the detection switch 18 and its leads can be efficiently arranged by the end point switch unit 8 , and the pit ladder 11 can be permanently installed in the hoistway 1 . Furthermore, the storage detection system of the pit ladder 11 can be simplified.

In addition, in the above example, the pit ladder 11 at the storage position is parallel to the hoistway wall 1b, but it may be inclined to a certain extent as long as it does not interfere with the car 2 and other equipment.

Moreover, in the above example, the end point switch unit 8 was shown as hoistway equipment, but it is not limited thereto. For example, when a switch such as an end switch is mounted on the car, and an operating member for operating the switch is provided on the hoistway side, the hoistway equipment may be an operating member such as a cam. Furthermore, the hoistway equipment may also be a pit switch as required by EN81-205.2.1.5.1, for example.

Furthermore, in the above example, the steps 16 are arranged only below the floor height FL of the lowest floor, but the steps may be arranged above the floor height of the lowest floor as long as they do not interfere with hoistway equipment. For example, when the lower end of the hoistway equipment is positioned slightly higher than the floor height, the uppermost step may be arranged slightly higher than the floor height.

Embodiment 2

Next, FIG. 5 is a front view schematically showing the end switch unit 8 and the pit ladder 11 of the elevator apparatus according to Embodiment 2 of the present invention. In Embodiment 2, when the pit ladder 11 is seen from the front, the pit ladder 11 and the end switch unit 8 are arranged in parallel. That is, the end switch unit 8 is arranged outside the pit ladder 11 in the width direction of the pit ladder 11 and is arranged between the pillar 15a and the car guide rail 4b.

The step 16 is arrange|positioned at both the position below and the position above the floor height FL of the lowest floor. That is, the steps 16 are provided at equal intervals over the entire pillars 15a, 15b, like a normal ladder. Other structures are the same as those in Embodiment 1.

In this way, there is a margin in the planar space of the hoistway 1, so even if the pit ladder 11 and the end switch unit 8 do not overlap, by providing the detection switch 18 on the switch supporting member 13, the end switch unit 8 can be efficiently arranged. Detect switch 18 and lead wire thereof, thereby can permanently set up pit ladder 11 in hoistway 1. Furthermore, the storage detection system of the pit ladder 11 can be simplified.

Also, the arrangement of the equipment of the elevator installation is not limited to FIG. 1 . For example, the counterweight may be arranged behind the lift area of the car so that it faces the back of the car when it is at the same height as the car.

Furthermore, the present invention can be applied to various types of elevator devices in which a pit ladder 11 is provided in the hoistway 1, such as an elevator with a machine room, an elevator with a 1:1 roping method, and a double-deck elevator.

Label description

1: shaft; 1a: shaft pit; 1b: shaft wall; 2: car; 8: terminal switch unit (well equipment); 10: cam (operating part); 11: pit ladder; 13: switch supporting part; 14a, 14b, 14c: end switches; 15a, 15b: pillars; 16: steps; 18: detection switches; 20: landing entrances and exits.

Claims (6)

1. a kind of lift appliance, has:

Carriage is gone up and down in hoistway；

Hoistway equipment, at least part are set to the hoistway within the scope of the up and down direction of undermost landing doorway It is interior, and the hoistway equipment is opposed at spaced intervals with well enclosure；And

Pit ladder, with a pair of posts and the multiple steps being set between the pillar, and is set to the hoistway It is interior,

The pit ladder can be rotated in reception position and using between position, and in the reception position, the pit ladder is than institute It is opposed with the well enclosure at the position of the well enclosure side to state hoistway equipment, uses position at this, the pit ladder is opposite It is tilted in the well enclosure,

When being observed from the front the pit ladder, the hoistway equipment is configured between the pair of pillar,

The step is only configured at when rotating the pit ladder between the reception position and the use position and institute It states outside the range that hoistway equipment interferes.

2. lift appliance according to claim 1, wherein

The step is only configured at the lower end position on the lower than the hoistway equipment.

3. lift appliance according to claim 1 or 2, wherein

The step is only configured at the position than the undermost floor level on the lower.

4. lift appliance according to any one of claims 1 to 3, wherein

The hoistway equipment is limit switches unit, which includes rodlike switch support component, vertically Direction configuration；And limit switches, it is set to the switch support component, and the operating member by being set to the carriage is grasped Make.

5. lift appliance according to claim 4, wherein

The switch support component is provided with detection switch, which detects whether the pit ladder is located at the storage Position.

6. a kind of lift appliance, has:

Carriage is gone up and down with operating member, and in hoistway；

Limit switches unit has the rodlike switch support component configured along the vertical direction and is set to the switch Bearing part and the limit switches operated by the operating member, and the limit switches unit is set in the hoistway Near lowest level；And

Pit ladder, is juxtaposed in the hoistway with the limit switches unit,

The pit ladder can be rotated in reception position and using between position, compared with the reception position, in the use Position, the pit ladder is larger relative to the tilt angle of well enclosure,

The switch support component is provided with detection switch, which detects whether the pit ladder is located at the storage Position.