WO2007080626A1

WO2007080626A1 - Elevator device

Info

Publication number: WO2007080626A1
Application number: PCT/JP2006/300141
Authority: WO
Inventors: Akinari Kajita
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2006-01-10
Filing date: 2006-01-10
Publication date: 2007-07-19
Also published as: EP1972593A1; CN101102955A; JPWO2007080626A1; JP4888389B2; CN101102955B; EP1972593A4

Abstract

An elevator device that can cope with a change in the distance between guide rails, in which ride comfort and safety of an elevator car are improved and in which workability in installation of the guide rails is enhanced. The elevator device has the car vertically moving in an elevator hoistway; the pair of guide rails arranged in the hoistway and whose relative distance is partially varied; a cage guide device capable of advancing to and retreating from a desired position in the horizontal direction relative to the car and constantly in contact with the guide rails while following the variation in the relative distance of the guide rails; and an emergency stop device provided at the car, capable of advancing to and retreating from a desired position in the horizontal direction relative to the car, facing the guide rails with a constant distance from the rails while following the variation in the relative distance between the guide rails, and holding the guide rails when the car falls at overspeed, making an emergency stop of the car.

Description

Specification

Elevator equipment

Technical field

TECHNICAL FIELD [0001] The present invention relates to an elevator car guide device and an elevator device equipped with an emergency stop device according to changes in the distance between guide rails.

Background art

In a conventional elevator apparatus, a guide rail is installed in a hoistway, and a car is guided up and down in the hoistway by the guide rail, and a pair of emergency stop devices are opposed to the guide rail in the car. There is something that is mounted.

Further, a conventional elevator apparatus has a self-propelled elevator force S that moves through a plurality of hoistways (see, for example, Patent Documents 1 and 2).

Patent Document 1: Japanese Unexamined Patent Publication No. 2000-185885

Patent Document 2: Japanese Unexamined Patent Publication No. 6-156939

Disclosure of the invention

Problems to be solved by the invention

[0004] In the conventional elevator apparatus, the guide rail that is installed on the wall surface of the hoistway to guide the raising and lowering of the car has to have a constant distance between the upper and lower sides. In general, however, the wall of the hoistway is inaccurate in the straightness in the vertical direction, and the width is not uniform in the vertical direction. Therefore, the guide rail mounting dimensions of the hoistway wall force are adjusted so that the distance between the guide rails is fixed accurately. The adjustment of the guide rail mounting dimension is performed by adjusting the wall surface of the support member that supports the guide rail from the wall surface or the mounting surface position of the guide rail surface, and there is a problem that much installation time is required.

In addition, in the self-propelled elevator of the conventional elevator apparatus shown in Patent Document 2, the guide rails provided in each of the plurality of hoistways correspond to all the cars, so the distance between the guide rails is the same in all the hoistways. It is necessary to. Therefore, if the width of multiple hoistways is not the same due to circumstances on the building side, etc., it is necessary to increase the position of some hoistways from the guide rail wall in order to keep the distance between the guide rails constant. There I got it. At this time, there was a problem that the support member from the wall side of the guide rail had to be strengthened to support the load applied to the guide rail.

Means for solving the problem

[0005] An elevator apparatus according to the present invention is provided on a pair of guide rails that are provided on an elevator hoistway and the distance between them is partially changed, and on a car, A car guide device that can be moved back and forth in any horizontal position with respect to the car and that always follows the guide rails following changes in the distance between the guide rails. It is possible to move forward and backward at any position of the guide rail, following the change in the mutual distance between the guide rails, always facing the guide rail at the same distance, and when the car is dropped at an excessive speed, it is an emergency stop that stops the car only by gripping the guide rail Device.

[0006] Further, the elevator apparatus according to the present invention measures a distance between a pair of guide rails provided in the elevator hoistway and the distance between the guide rails being partially changed, as well as raising and lowering the elevator hoistway. A measuring device, a car guide device that is provided in the car, can move forward and backward in any position in the horizontal direction with respect to the car, and constantly contacts the guide rail following changes in the distance between the guide rails. It is installed and can move forward and backward to any position in the horizontal direction with respect to the force.It follows the change in the distance between the guide rails and always faces the guide rail at the same distance. An emergency stop device for emergency stop of the holding cage and a control device for determining the amount of movement of the car guide device and the emergency stop device based on the measurement result of the measurement device.

[0007] In the elevator apparatus according to the present invention, the car guide device and the emergency stop device are displaced by an actuator.

[0008] Further, in the elevator apparatus according to the present invention, the elevator hoistway is composed of a plurality of hoistways with different distances between the guide rails, the car is self-propelled, and moves up and down the plurality of elevator hoistways. is there

[0009] Further, the elevator apparatus according to the present invention includes a wedge that grips the guide rail and brakes the brake by moving the emergency stop device upward, and fixes the wedge downward when the car normally travels, and a car overspeed. And an actuator section for moving the wedge upward when dropped. The invention's effect

[0010] According to the present invention, it is possible to cope with a change in the distance between the guide rails, so that the riding comfort and safety of the elevator are improved, and the installation workability of the guide rails is improved.

Brief Description of Drawings

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

[FIG. 2] FIG. 2 is an equivalent view of FIG. 1 showing the elevator apparatus in which the distance between the guide rails is changed.

[FIG. 3] FIG. 3 is a view corresponding to FIG. 2 and showing a state where the car is approaching the place where the distance between the guide rails is changed.

FIG. 4 is a front view showing an elevator apparatus in which the distance between the guide rails in Example 1 of the present invention is changed in a complicated manner.

FIG. 5 is a front view showing an emergency stop device provided in the elevator apparatus according to Embodiment 1 of the present invention.

[Fig. 6] Fig. 6 is a view corresponding to Fig. 1 and showing when the safety device is activated.

FIG. 7 is a cross-sectional view of a hoistway of an elevator apparatus according to Embodiment 3 of the present invention. Explanation of symbols

[0012] 1 hoistway

lb communication passage

2 Guide rail

3 baskets

4 Car guide device

5 Emergency stop device

5a Support member for emergency stop device

5b wedge

5c Braking surface

5d wedge guide

5e Actuator section 5h spring

6 Measuring equipment

7 Actuator

8 Control unit

BEST MODE FOR CARRYING OUT THE INVENTION

Example 1

1 is a front view showing an elevator apparatus according to Embodiment 1 of the present invention, FIG. 2 is an equivalent view of FIG. 1 showing an elevator apparatus in which the distance between the guide rails is partially changed, and FIG. 3 is a place where the distance between the guide rails is changed. FIG. 2 is a front view showing the elevator apparatus in which the distance between the guide rails in the first embodiment of the present invention is changed in a complicated manner, and FIG. 5 is a first embodiment of the present invention. FIG. 6 is a front view showing an emergency stop device provided in the elevator apparatus in FIG. 6, and FIG. 6 is a view corresponding to FIG.

In the figure, 1 is an elevator hoistway, 2 is a pair of left and right guide rails installed on both side walls of the elevator hoistway via support members (not shown), and the distance between them changes partially. Yes. Reference numeral 3 denotes a force lever which is provided between the pair of left and right guide rails 2 and moves up and down in the elevator hoistway 1. 4 is a force guide device that protrudes in the left and right directions at the upper and lower portions of the force cage 3 and guides the ascending and descending of the cage 3 in contact with the pair of left and right guide rails 2 respectively. 5 is an emergency stop device that protrudes in the left and right directions at the bottom of the force cage 3 and faces the pair of left and right guide rails 2 respectively. Then, emergency stop 3 6 is a measuring device provided in the upper and lower parts of the car 3 and measures the distance between the guide rails 2 at the upper and lower parts of the cage as needed. Reference numeral 7 denotes an actuator that is provided in each of the car guide device 4 and the emergency stop device 5 and allows the car guide device 4 and the emergency stop device 5 to be moved back and forth in the left-right direction. 8 is a control device connected to the measuring device 6 and each actuator 7 by a control cable, and the amount of movement to the actuator 7 based on the measurement result of the distance between the guide rails of the measuring device 6 and the input data such as the speed of the car 3. Instruct. In other words, the control device 8 always keeps each force guide device 4 even when the car 3 passes through a place where the distance between the guide rails 2 changes. The amount of movement of each actuator 7 is instructed so as to abut against the pair of left and right guide rails 2, and each car guide device 4 is moved back and forth in the left-right direction. This also prevents the car 3 from being shaken in the horizontal direction and the posture from being lost. Similarly, the safety device 5 is always opposed to the pair of left and right guide rails 2 at the same interval.

[0014] An operation example of the elevator apparatus configured as described above will be described with reference to FIG. 2 and FIG. 2 and 3, the car 3 is rising, and a widened portion 2 a is provided on the upper right side of the guide rail 2 above the car 3.

First, when the car 3 is squeezed into the area 2a where the right side of the pair of left and right guide rails 2 expands, the upper right side of the measuring device 6 detects the expansion of the area 2a and measures the distance between the guide rails as needed. To do. The measurement result is sent to the control device 8. Next, the control device 8 determines the moving distance and timing of the car guide device 4 and the emergency stop device 5 in consideration of other data such as the speed of the car 3. Next, the controller 8 instructs the actuator 7 at any time on the moving distance. By this instruction, as shown in FIG. 3, first, the upper right side of the force guide device 5 is moved to an arbitrary position at any time, and similarly, the right side of the emergency stop device 5 and the lower right side of the car guide device 4 are arbitrarily set. Move to position.

[0015] According to the elevator apparatus configured as described above, the car guide apparatus 4 is always constant even when the car 3 passes through a place where the distance between the pair of left and right guide rails 2 changes. Since the car 3 can be brought into contact with the guide rail 2 with the pressure of, the car 3 can be moved up and down at a predetermined position without being shaken in the horizontal direction and without changing its posture. Further, the emergency stop device 5 can always be opposed to the pair of left and right guide rails 2 at a certain distance, so that it can be a safe elevator device.

Similarly, according to this elevator apparatus, even if the distance between the pair of left and right guide rails 2 changes, it is possible to cope with a change in the vertical linearity of the hoistway wall surface. In the case where the guide rail 2 is not uniform, it is not necessary to adjust the guide rail 2 mounting dimension from the hoistway wall surface and to install the guide rail 2 at a constant and accurate distance. That is, the wall force of the support member that supports the guide rail 2 or the adjustment of the mounting surface position of the two surfaces of the guide rail 2 can be eliminated, and the installation workability of the guide rail 2 is improved.

By the way, if the elevator apparatus of the present embodiment is used, a pair of left and right as shown in FIG. Needless to say, even if the distance between the guide rails 2 changes in a complicated manner, it can be handled.

Next, the configuration of the pair of left and right safety devices 5 will be described with reference to FIGS. 5 and 6. FIG. The configuration of the safety device 5 is the same as that described in the first embodiment of the patent document WO2004Z083090A1.

5a is a support member fixed to the car 3 side, 5b is provided above the support member 5a, and is a pair of left and right symmetrical wedges in which the guide rail 2 is positioned between them, and is movable in the vertical direction. Each of the pair of wedges 5b includes an inner side surface composed of a braking surface 5c facing both side surfaces of the guide rail 2, and an outer side surface inclined so that the thickness of the inner side surface decreases toward the upper side. Reference numeral 5d designates a pair of symmetrical wedge guides that are erected on the support member 5a and in which a pair of wedges 5b are positioned between each other, and are provided with inclined surfaces that face each other in parallel with the outer side surface of the wedge 5b. As a result, when the pair of wedges 5b moves upward, the outer side surfaces move in directions closer to each other by sliding with the inclined surfaces of the wedge guide portions 5d, and the braking surfaces 5c grip the guide rails 2.

Reference numeral 5e denotes a pair of actuator portions provided between the pair of wedges 5b and the support member 5a. Here, the pair of wedges 5b includes a magnet 5f at the lower end, and the pair of actuator portions 5e includes an electromagnet 5g opposed to the magnet 5f and an urging panel 5h.

The operation of the safety device 5 configured as described above will be described.

During normal traveling of the car 3, the electromagnets 5g of the pair of actuator parts 5e are energized and excited, and the magnets 5f of the pair of wedges 5b are attracted and the urging springs 5h are compressed and fixed to the support member 5a side. RU At this time, the braking surfaces 5c of the pair of wedges 5b are separated from the guide rail 2! /.

When the force 3 drops at a speed equal to or higher than a predetermined speed, the electromagnet 5g is turned off by the electric signal notifying it and loses the magnetic force, and the pair of wedges 5b are moved upward by the biasing spring 5h. As a result, the braking surfaces 5c of the pair of wedges 5b grip both side surfaces of the guide rail 2 and brake braking is performed.

[0020] In the emergency stop device 5 configured as described above, a connecting mechanism (such as a lifting bar) with a speed governor is not required unlike the conventional emergency stop device, and the device can be simplified.

In addition, since the emergency stop device 5 operates in response to an electrical signal command, the conventional emergency stop device Compared to, the speed abnormality of the car 3 is detected, and the car 3 can be braked in a short time and the braking distance can be shortened. In addition, the pair of left and right emergency stop devices can be easily operated synchronously, and the force 3 can be braked stably. In addition, malfunction due to shaking of the force 3 can be prevented. Further, since the pair of wedges 5b can force the upward force even with the frictional force with the guide rail 2 during braking, the braking surface 5c is more strongly pressed against the guide rail, and the braking force can be reliably increased.

Incidentally, it goes without saying that the elevator apparatus according to the present embodiment can also be implemented by using an emergency stop device equipped with a mechanism (such as a lifting rod) connected to a speed governor as in the prior art.

[0022] Example 2

In Example 1, the force provided with the measuring device 6 In Example 2, this is unnecessary.

In the second embodiment, information such as the distance between the pair of left and right guide rails 2 in the hoistway and the distance between the guide rails 2 is memorized by the controller 8. Each actuator 7 is operated based on this information. This eliminates the need for a measuring device and simplifies the structure and control of the elevator apparatus.

[0023] Example 3

FIG. 7 is a cross-sectional view of a hoistway of an elevator apparatus according to Embodiment 3 of the present invention.

In the figure, 3a is a self-propelled elevator car. la is an elevator hoistway composed of two self-propelled elevators, and the distance between the guide rails is different, and the car 3a moves back and forth between them. lb is a connecting passage connecting the two elevator hoistways la, and is a connecting means for moving the force 3a horizontally to move between the two elevator hoistways la. Here, the safety device 5 has the structure described in the first embodiment.

[0024] According to the emergency stop device 5 provided in the elevator apparatus configured as described above, the same effect as that of Example 1 can be obtained, and the speed governor required in the conventional emergency stop device can be obtained. This eliminates the need for a connecting mechanism (such as a lifting rod), so that a complicated structure is added, such as allowing the connecting mechanism to move because the force 3a moves back and forth between the elevator hoistways la. There is no need to do.

[0025] In the configuration in which the car guide device 4 and the emergency stop device 5 are advanced and retracted to arbitrary positions in the left-right direction by the measuring device 6 and the control device 8, the guide rail as described in the first embodiment is used. Not only a single hoistway elevator device whose distance between the two has changed, but also a self-propelled car 3a as described in the present embodiment moves back and forth between a plurality of elevator hoistways la having different distances between the guide rails. Needless to say, it is also effective for self-propelled elevator equipment. As a result, it is not necessary to unify all the distances between the guide rails of the plurality of hoistways la, and the guide rail installation workability is improved.

[0026] Needless to say, the measuring apparatus 6 can also be dispensed with in the elevator apparatus of the present embodiment. In this case, the control device 8 is caused to recognize the distance between the guide rails 2 of the elevator hoistway la to be moved in the communication passage lb, and the car guide device 4 and the emergency stop device 5 are placed in arbitrary positions in the communication passage lb. What is necessary is just to add the structure to move. Thereby, the structure and control of an elevator apparatus can be simplified.

Industrial applicability

[0027] The guide rail that guides a traveling object can be used in a case where the distance between the guide rails may change.

Claims

The scope of the claims

Whether to go up and down the elevator hoistway,

A pair of guide rails provided in the elevator hoistway and the distance between the guide rails partially changed, and provided in the car, and can be moved back and forth to any position in the horizontal direction with respect to the car. Whether the guide rail always contacts with the change of the guide device,

The car is provided in the car and can be moved forward and backward in any position in the horizontal direction with respect to the car, following the change in the distance between the guide rails, always facing the guide rail at the same distance, and the car overspeed An emergency stop device that grips the guide rail when it falls and stops the car in an emergency,

An elevator apparatus comprising:

Whether to go up and down the elevator hoistway,

A pair of guide rails provided in the elevator hoistway, the distance between them partially changing;

A measuring device for measuring the distance between the guide rails;

A car guide device that is provided in the car and is capable of moving forward and backward to any position in the horizontal direction with respect to the car, and that constantly contacts the guide rail following the change in the distance between the guide rails;

A control device for determining the amount of movement of the car guide device and the safety device according to the measurement result of the measuring device;

An elevator apparatus comprising:

3. The elevator apparatus according to claim 1, wherein the car guide device and the emergency stop device are displaced by an actuator. [4] The elevator hoistway has a plurality of hoistway forces with different distances between the guide rails, the car is self-propelled, and moves up and down the plurality of elevator hoistways. The elevator apparatus according to claim 3.

[5] The emergency stop device moves upward and grips the guide rail to brake and brakes,

5. An actuator section that fixes the wedge downward during normal force travel and moves the wedge upward when the car falls at an excessive speed. Elevator equipment.