CN1974362B - Elevator without machine room - Google Patents

Abstract

The elevator without a machine room of the present invention comprises: a hoistway; a guide rail for a car and a guide rail for a balance weight arranged in the hoistway; ; the balance weight that is guided by the guide rail of the balance weight and lifts in the elevator passage; the equipment that is arranged on the top of the elevator passage and drives the car; and the equipment that is arranged on the top and has an operator A workbench device as a workbench on which to stand when performing maintenance and repair of the above-mentioned equipment. This workbench device uses a workbench shifting device to form a space for an operator to perform maintenance on the workbench during maintenance, and the workbench is displaced to the ceiling surface side when the maintenance is not performed. The present invention is an elevator device capable of improving maintenance and repair workability of hoisting machines and the like.

Description

Elevator without machine room

This application is a divisional application of the Chinese patent invention application with the application date of June 6, 2003, the application number 03805056.X (PCT/JP2003/007212), and the name "elevator without mechanical room".

technical field

The invention relates to an elevator without a machine room, which is equipped with hoisting machine and control equipment on the top of the lifting passage.

Background technique

As a conventional elevator without a machine room, there is known a machine room-less elevator of the following structure, comprising: a hoistway; a guide rail for a car and a guide rail for a counterweight disposed in the hoistway; 1. A car that is lifted and lowered in the lift passage; a balance weight that is guided by the guide rail for the balance weight and that lifts in the lift passage; and is arranged on the top of the lift passage to drive the car hoist.

In the above-mentioned elevator without a machine room, when the hoist machine installed on the top of the hoistway is maintained and repaired, the operator climbs on the ceiling of the car from the floor of the uppermost floor to perform maintenance and repairs (for example, refer to Japanese Patent Laying-Open No. 2002-173277 [0005], Fig. 1).

However, there is a problem that when the elevator without a machine room breaks down and the car stops, the stop position is stopped at the place where the operator cannot simply climb on the ceiling of the car from the floor surface of the uppermost floor. , It is necessary to carry out a troublesome car position inspection operation, that is, it is necessary to use the brake operating device to release the brake of the hoist, so that the car lighter than the balance weight is lifted until the operator can board from the floor of the uppermost floor. s position.

Contents of the invention

The present invention aims at solving the above-mentioned problems, and an object of the present invention is to provide a machine room-less elevator capable of improving the maintenance and repair workability of hoisting machines and the like on the ceiling in the hoistway.

The elevator without a machine room of the present invention comprises: a hoistway; a guide rail for a car and a guide rail for a balance weight arranged in the hoistway; ; the balance weight that is guided by the guide rail of the balance weight and lifts in the elevator passage; the equipment that is arranged on the top of the elevator passage and drives the car; and the equipment that is arranged on the top and has an operator A workbench device as a workbench on which to stand when performing maintenance and repair of the equipment, the workbench device including a workbench displacement device, which is separated from the ceiling surface side of the elevator passage during the maintenance and repair, A space is formed for an operator to perform maintenance and repair on the workbench, and the workbench is displaced to the ceiling surface side when the maintenance and repair are not performed. The workbench shifting device has: one end connected to the workbench and the other end connected to a reel to suspend the workbench; a shaft passing through the reel; passing through the shaft and a winding rope whose one end is connected to the winding piece and whose other end is led out to the entrance of the uppermost floor. By pulling the winding rope, the workbench is displaced to the Ceiling side.

Description of drawings

Fig. 1 is a side sectional view of main parts of an elevator without a machine room according to Embodiment 1 of the present invention.

FIG. 2 is an overall perspective view of the workbench device in FIG. 1 .

FIG. 3 is a top sectional view of FIG. 1 .

Fig. 4 is a perspective view of a working platform device of an elevator without a machine room according to Embodiment 2 of the present invention.

Detailed ways

Embodiments applicable to the present invention will be described below with reference to the drawings. In each embodiment, the same symbols are attached to the same or equivalent components or positions for description.

[Example 1]

1 is a side sectional view of main components of an elevator without a machine room according to Embodiment 1 of the present invention, FIG. 2 is an overall perspective view of the working platform device 50 of FIG. 1 , and FIG. 3 is a top sectional view of FIG. 1 .

The elevator without a machine room includes: a plurality of brackets 14 fixed on the two side walls of the elevator passage 1 along the vertical direction and at intervals; Guide rail 7 is used; the car 5 guided by the guide rail 7 for the car is lifted; The support platform 9 arranged on the top of the lifting passage 1 and fixed on the guide rail 8 for the balance weight; the support platform 9 is arranged on the support platform 9 as a device composed of a sheave 11 and a motor 12, that is, a hoist 10; fixed on the lifting passage The inner wall surface of the top of 1, as the device that controls the driving of the winch 10, that is, the control device 13; the main rope 16 connected with the car 5 and the balance weight through the sheave 11; and the top that is arranged on the lifting passage 1, can Telescoping workbench device 50 .

Workbench device 50 has: a workbench 30 with a U-shaped cross-section for the operator to perform maintenance and repair operations; a pair of holders 38 with an L-shaped cross-section fixed to the top ceiling surface of the elevator passage 1; The zoom mechanism, that is, the hanger 31, which is set on the holder 38 and the other end is rotatably set on a pair of upright pieces 30a of the workbench 30; it is fixed to the middle part of the upright piece 30a and slides along the guide rail 7 for the car A free guide member 33; and a pair of U-shaped armrests 32 that can be undulatingly provided at both ends of the upright piece 30a.

The workbench device 50 also has: a stopper 34 fixed on the top of the bracket 14 and forming an inclined surface (not shown) inclined to the workbench 30 side on the upper end surface; 30a applies force to the stopper 34 side and can be inserted into the stopper pin 35 in the locking hole 34a of the stopper 34; it is fixed to the stopper 34 and abuts against the front end surface of the stopper pin 35 passing through the locking hole 34a. Connect and operate the switch 36; stretch between the holder 38 and the upright piece 30a of the workbench 30, four springs 51 that apply force to the holder 38 side to the workbench 30; and one end and one side of the holder 38 is connected to the end of the uppermost floor entrance 2 side, and a rope-like puller 37 is suspended downward.

The hanger 31 rotatably connects the long side part 31a and the short side part 31b by the pin 31c, and the long side part 31a and the short side part 31b rotate around the pin 31c respectively, and the workbench 30 moves relative to the holder 38. Parallel up and down movement.

In addition, a workbench displacement device is constituted by a zoom mechanism, that is, a spreader 31 and a spring 51 stretched between the holder 38 and the workbench 30 and biasing the workbench 30 toward the holder 38 side.

Next, the maintenance and repair work sequence of the hoist 10, the control device 13, etc. installed at the top of the hoistway 1 in the elevator without a machine room of the above-mentioned structure will be described.

When maintenance and repair are not normally performed, the workbench device 50 supports the spreader 31 in a folded state at a position offset from the ceiling side of the hoistway 1 by the elastic force of the spring 51 .

During maintenance and repair, the operator uses the puller 37 to overcome the elastic force of the spring 51 to pull the workbench 30 down from the floor surface 4 of the uppermost floor. At the time of this pulling down, since the guide member 33 slides along the guide rail 7 for a car, the workbench 30 is separated from the holder 38 while maintaining parallelism.

Then, the operator pulls down the puller 37 to lower the workbench 30, and at the same time, the stopper pin 35 protruding from the upright piece 30a and applying force to the stopper 34 side by the elastic force of the spring 35a is placed on the stopper 34 side. The front end surface is inserted into the locking hole 34a of the stopper 34 while pressing the inclined surface, and as a result, the workbench 30 is stopped.

At this time, the stopper pin 35 penetrates the locking hole 34 a, and the front end portion of the stopper pin 35 comes into contact with the switch 36 . As a result, the switch 36 is actuated, and the elevator is switched to the maintenance mode in which the car 5 does not rise above the working platform 30, that is, no collision occurs.

Then, the operator boards the workbench 30 from the floor surface 4 of the uppermost floor, pulls up the handrail 32 in the fallen state, and performs maintenance and repair operations on the winch 10 and control equipment 13 etc. arranged on the top of the hoistway 1 .

After the maintenance and repair work is completed, the operator moves from the workbench 30 to the uppermost landing floor surface 4 .

Next, the operator pulls the return rope 52 connected at one end to the end of the stopper pin 35 on the workbench 30 side, and pulls the stopper pin 35 out of the locking hole 34a, whereby the pair of stopper pins 35 can be released. Locking of the locking hole 34a. As a result, the workbench 30 folds the hanger 31 by the elastic force of the spring 51, biases it on the ceiling side of the hoistway 1, and returns to the normal state where maintenance and repair are not performed.

Adopt this elevator without machine room, for example, cause car 5 to stop in the occasion that can't simply get on from floor surface 4 of uppermost floor because of failure, the brake of winch 10 is released by brake operating device, does not need Carry out the troublesome position adjustment work of the car 5 that must be raised from the uppermost floor landing floor 4 to a position where it can be boarded. The simple work of lowering the floor surface 4 can secure a foothold for work.

In addition, the workbench shifting device is separated from the ceiling surface side of the lifting passage 1 during maintenance and repair, forming a space for the operator to perform maintenance and repair on the workbench 30. When not performing maintenance and repair, it can be used The workbench 30 is displaced to the ceiling surface side. This workbench displacement device is composed of simple components such as the hanger 31 and the spring 51 .

Furthermore, since the workbench 30 is provided with a guide member 33 that is slidable up and down along the guide rail 7 for the car, the workbench 30 can be smoothly raised and lowered along the guide rail 7 for the car.

Also, on the workbench 30, a stop pin 35 protruding forward and backward facing the inner wall of the lift passage 1 is provided, and a stopper 34 having a locking hole 34a that can insert the stop pin 35 is provided on the inner wall side of the lift passage 1, The workbench 30 can be easily positioned by inserting the stopper pin 35 into the locking hole 34a.

Moreover, on the stopper 34, since the switch 36 is provided to abut against the front end surface of the stopper pin 35 passing through the locking hole 34a to control the lifting of the car 5, for example, when the operator is working on the workbench 30 When carrying out work on it, it is possible to prevent the car 5 from colliding with the work platform 30.

Moreover, the handrail 32 that can rise and fall is provided on the peripheral edge of the workbench 30, which can improve the workability of the operator on the workbench 30, and, in the normal state of not performing maintenance and repairs, the handrail 32 is biased to the ceiling of the elevator passage 1. The workbench device 50 on the surface side is compact in size, and the space used for the workbench device 50 at the top of the lift passage 1 can be reduced.

In the above-mentioned embodiment, the hanger 31 has a telescoping mechanism, but a telescoping mechanism in which a small-diameter cylinder slides on the inner wall surface of a large-diameter cylinder along the axial direction can also be used to move the workbench 30 up and down.

[Example 2]

Fig. 4 is a perspective view of main parts of an elevator without a machine room according to Embodiment 2 of the present invention.

This workbench device 60 has: a workbench 30 for the operator to perform maintenance and repair work; a guide member 33 fixed on both sides of the workbench 30 and slidable along the guide rail 7 for the car; U-shaped handrails 32 around the four sides of the platform 30; a pair of ropes 39 that are connected to the workbench 30 at one end and suspend the workbench 30; Drum 41; a shaft 40 that penetrates through a pair of reels 41 and is rotatably supported by support members 53 fixed on the inner wall surface of the lifting passage 1 at both ends; is fixed to the shaft 41 between the pair of reels 41 And the front end portion is connected with this winding member 42, and the other end portion is led out to the winding rope 43 of the uppermost floor entrance 2.

This elevator without a machine room also has: a stopper 34 fixed to the bracket 14 and forming an inclined surface (not shown) inclined toward the workbench 30 side on the upper end surface; The elastic force of 35a applies force to the stopper 34, the stopper pin 35 that can be inserted in the locking hole 34a of the stopper 34; The surface abuts against the switch 36 for actuation. In addition, the structure of the stopper 34, the spring 35a, and the switch 36 is the same as that of Embodiment 1, and is not shown in FIG. 4 .

Next, the maintenance and repair work of the hoisting machine 10, the control device 13, etc. installed on the top of the hoistway 1 in the elevator without a machine room of the above-mentioned structure will be described.

When maintenance and repair are not normally performed, the other end of the winding rope 43 is locked to the uppermost landing 2 , and the workbench 30 is supported at a position offset from the ceiling side of the hoistway 1 .

When performing maintenance and repairs, the operator at the entrance 2 on the uppermost floor releases the locking of the winding rope 43, and then utilizes the self-weight of the workbench 30 while holding the winding rope 43 with his hand, so that the winding member 42, the reel 41 descends rotationally. During this pull-down, since the guide member 33 slides along the guide rail 7 for the car, the work platform 30 is separated from the ceiling of the hoistway while maintaining parallelism.

The workbench 30 descends, and at the same time, the stopper pin 35 protruding from the workbench 30 and applying force to the stopper 34 side by the elastic force of the spring 35a is inserted into the stopper while the front end thereof pushes the inclined surface. 34 in the locking hole 34a, as a result, the workbench 30 is stopped.

At this time, the stopper pin 35 penetrates the locking hole 34 a, and the front end portion of the stopper pin 35 comes into contact with the switch 36 . As a result, the switch 36 is actuated, and the elevator is switched to the maintenance mode in which the car 5 does not rise above the working platform 30, that is, no collision occurs.

Then, the operator boards the workbench 30 from the uppermost floor entrance 4, pulls up the four-sided handrail 32 in the fallen state, and performs maintenance and repair operations on the winch 10, control equipment 13, etc. that are arranged on the top of the hoistway 1 .

After the maintenance and repair work is completed, the operator puts down the handrail 32 and moves from the workbench 30 to the uppermost landing floor surface 4 .

Next, the operator pulls the return rope 52 connected at one end to the end of the stopper pin 35 on the workbench 30 side, and pulls the stopper pin 35 out of the locking hole 34a, whereby the pair of stopper pins 35 can be released. Locking of the locking hole 34a. Next, the operator pulls the winding rope 43 to the front, and by rotating the winding member 42 and the reel 41, the workbench 30 is biased to the ceiling surface side of the elevator passage 1, and finally the other end of the winding rope 43 is connected to the uppermost The locking part (not shown) of the upper floor entrance 2 is locked, and the state of not performing maintenance and repair is restored.

Adopting the elevator without a machine room, the working platform shifting device has: one end is connected with the working platform 30 and the other end is connected with the reel 41, and the suspension rope 39 for suspending the working platform 30; penetrates through the reel 41 A shaft 40; a winding piece 42 passing through the shaft 40; and a winding rope 43 whose end is connected to the winding piece 42 and whose other end is exported to the uppermost floor entrance, the working platform 30 can be made to work with a simple structure. lift.

To sum up, the present invention is applicable to elevators without a machine room that need to maintain and repair the hoist and control equipment at the top of the hoistway.

Claims (5)

1. A machine room-free elevator, characterized in that, comprising: elevator passage; The guide rails for the car and the guide rails for the balance weight arranged in the hoistway; a car that is guided by the guide rail for the car and lifts up and down in the hoistway; A balance weight that is guided by the guide rail for the balance weight and lifts up and down in the lifting channel; The equipment installed on the top of the lifting passage to drive the car; a workbench device provided on the top and having a workbench as a foothold for the operator to perform maintenance and repair of the equipment, The workbench device includes a workbench shifting device, which is separated from the ceiling surface side of the lifting passage during the maintenance and repair, forming a space for the operator to perform maintenance and repair on the workbench, displacing the workbench to the ceiling surface side when the maintenance and repair are not being performed, The workbench shifting device has: one end connected to the workbench and the other end connected to a reel to suspend the workbench; a shaft passing through the reel; passing through the shaft and a winding rope whose one end is connected to the winding piece and whose other end is led out to the entrance of the uppermost floor. By pulling the winding rope, the workbench is displaced to the Ceiling side. 2. The elevator without a machine room according to claim 1, wherein a guide member that is vertically slidable along the guide rail for the car is provided on the work platform. 3. The elevator without a machine room as claimed in claim 1, characterized in that, on the working table, a stop pin protruding toward the inner wall of the lifting passage that can advance and retreat is set, and on the inner wall side of the lifting passage A stopper having a locking hole into which a stop pin can be inserted is provided, and the workbench can be fixed at a maintenance work position by inserting the stop pin into the locking hole. 4. The elevator without a machine room according to claim 3, wherein the stopper is provided with a stopper that abuts against the front end surface of the stopper pin penetrating through the locking hole and faces the car. The switch that controls the lifting of the car. 5. The elevator without a machine room according to claim 1, wherein a handrail capable of rising and falling is provided on a peripheral portion of the work platform.

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