JPH04164797A - Elevator - Google Patents

Abstract

PURPOSE:To easily restrain the vertical motion of a cage at the time of stopping by causing contact and engagement between a cage door and a hall door via a member having a high friction factor during open and close operation. CONSTITUTION:When a cage 1 arrives at a destination floor and a door open instruction is issued, a motor 16 starts and a door link 21 is turned via a drive lever 19 and a connection rod 21. Furthermore, a small link 23 is turned and a cage door 15 is opened or closed via a shaft 26. In this case, the cam 28 of an engagement device 27 is turned in the same direction, due to the turn of the small link 23, and a cam follower 30 is pushed, thereby turning an engagement lever 31. As a result, the friction plate 34 of the engagement device 27 is clamped with an engagement plate on a hall door, in cooperation with the friction plate 35. It follows, therefore, that the cage door 15 is opened while holding the hall door. The vertical motion of the hall door is restricted and, therefore, the cage 1 becomes as if integral with the vertically restricted hall door, when the cage door 15 is opened or closed. The vertical oscillation of the cage 1 is thereby restrained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to an elevator, and particularly to a structure that suppresses vertical vibrations generated in a car by a rope when the car lands on the floor.

(Prior Art) In general, as shown in FIGS. 4 and 5, elevators that are suspended at a point other than the center of gravity of the car 1, such as point A, have a large eccentric load, such as indirect hydraulic elevators. In an elevator, a large load P in the horizontal direction is constantly applied to the elevator guide devices 2 arranged on the upper, lower, left and right sides.

In such a case, if a guide shoe is used as the elevator guide device 2, each guide shoe will be subjected to an uneven load of several hundred kilograms, which will cause vibrations during travel, resulting in poor riding comfort. Therefore, in order to improve this, two guide rollers 3 each are installed as shown in the elevator guide device 2 shown in the figure.
Those using A and 3B are generally adopted.

In other words, in this type of elevator guide device 2, the - side guide roller 3A is pivotally supported in a state in which it rolls into contact with the guide rail 4 in a direction opposed to the above-mentioned unbalanced load P, and the other guide roller 3
B is pivotally supported in a state perpendicular to the unbalanced load P and in rolling contact with the guide rail 4. However, in such an elevator guide device 2, only rolling friction acts between the guide rollers 3A, 3B and the guide rail 4. For this reason, the frictional resistance becomes too small, and when the car 1 starts running, stops, or when a user gets on and off, the spring action of the rope 5 suspending the car 1 causes vertical vibrations in the car 1. The vibration continues repeatedly for a long period of time as shown by the vibration characteristic curve shown by the broken line in FIG. 6, which adversely affects the riding comfort. Therefore, as a countermeasure to this problem, as shown in FIG.
Some devices are equipped with a vibration isolation mechanism 7 that suppresses vertical vibrations.

This vibration isolation mechanism 7 includes a guide roller 3A disposed facing the unbalanced load P described above, a shoe 8 disposed facing each other with the guide rail 4 in between, and a direction in which the shoe 8 comes into contact with or separates from the guide rail 4. A guide rod 9 and a guide frame 10 that guide and support the guide rod 9, a press spring 11 that presses the shoe 8 against the guide rail 4 via the guide rod 9, and a press spring 11 that separates the shoe 8 from the guide rail 4 against the pressing force of the press spring. It consists of a solenoid 12 and a control device (a travel command circuit, a relay output for solenoid excitation, etc.) that excites the solenoid j2 only when the elevator is traveling.

In this vibration isolation mechanism 7, when the elevator is running, the solenoid I2 is energized by an output signal from the control device and the shoe 8 is separated from the guide rail 4, but when the elevator stops at a predetermined floor, the solenoid 12 is de-energized. The force of the spring 11 presses the shoe 8 against the guide rail 4. At this time, vertical vibration of the car 1 is suppressed by the contact friction force between the shoe 8 and the guide rail 4.

(Problem to be Solved by the Invention) However, in an elevator equipped with a vibration isolation mechanism having the above-mentioned configuration, the solenoid 12 must be kept energized at all times while the elevator is running. It is necessary to install a control device to judge the stoppage and open/close the power to the solenoid 12, and to install mutual wiring equipment.
The structure was complicated, and there were problems in terms of performance and cost for practical use.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a DC power supply device for exciting a solenoid, a control device for opening and closing the power supply of the solenoid,
To provide an elevator that does not require electrical equipment such as mutual wiring equipment, has a simple structure, facilitates maintenance and inspection, and reduces manufacturing costs.

[Structure of the Invention (Means for Solving the Problems) The present invention provides a car which is suspended from a rope and moves up and down a hoistway, and which is provided with a car door that opens and closes at an entrance and exit, and which is connected to a landing via a car door. An elevator equipped with a hall door that opens and closes is provided with an engagement device that grips the car door and the hall door through a member having a large coefficient of friction when the car door and the hall door are opened and closed.

(Function) When the car lands on the destination floor, the car door performs an opening action to open the landing door, and after a predetermined period of time, the car door performs a closing action to close the landing door. The member with a large coefficient of friction grips the engagement member of the landing door. However, since the landing door opens and closes while its vertical movement is restricted, the vertical vibration of the car caused by the rope when the car lands on the floor can be suppressed through the landing side structure.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing essential parts of an embodiment of the present invention;
FIG. 2 is an enlarged view of section "A" in FIG.

In FIGS. 1 and 2, 1 is a car, and a pair of car doors 15, 15 are provided at the entrance and exit so that they can be opened and closed in the left and right directions. The car door drive motor 16 is provided above the entrance/exit of the car 1 via a speed reduction device 17.
A drive lever 19 is fixed to the output shaft 18 of 7. One end of each of a pair of connecting rods 20, 20 extending left and right is rotatably connected to both ends of the drive lever I9. Note that although the configuration after the connecting rod 20 is opposite in terms of arrangement and direction of operation, since they are functionally similar, only one side will be described.

The door link 21 whose one end is connected to the connecting rod 20 is
The car door 15 is centered around the shaft 22 provided at the top of the car 1.
The lower end is rotatably connected to one end of a small door drive ring 23 via a pin 24. The door drive errand link 23 is rotatably connected to a shaft 26 whose other end is fixed to a base 25 attached to the car door 15. An engagement device 27, which will be described below, is connected to this door drive errand link 23.

The engagement device 27 has a shaft 2 at the end of the door drive errand link 23.
6, and a cam follower 3, which is rotatably provided at one end on a shaft 29 fixed to the base 25 and engages with the cam 28 in the middle.
0, a friction plate 34 provided on a guide 32 provided at the other end of this engagement lever 31 and movable in the axial direction via a slide shaft 33, and this friction plate 34. and a friction plate 35 provided on the base 25 opposite to the friction plate 35. The friction plates 34 and 35 are made of a resin material, an oil-impregnated sintered metal material, or the like, which has excellent friction resistance against the metal engagement plate of the landing door, which will be described later. Further, the friction plate 34 is constantly pushed toward the friction plate 35 side by the spring 36.
The extrusion size is regulated by a nut 37. Further, the engagement lever 31 is tilted toward the cam 28 by a spring (not shown) while the car 1 is running.

The engagement device attached to the other car door 15 is
The engagement device 27 has a configuration opposite to that of the engagement device 27 .

FIG. 3 is a front view showing the hall device. Reference numeral 38 denotes a frame fixed to the hoistway wall, with a rail 39 provided at the upper part and a sill 40 provided at the lower part. A pair of landing doors 41.
41 is suspended from the rail 39 and guided by the sill 40, and is provided so as to be openable and closable from side to side.

An engagement plate 43 is attached to each landing door 41 via a mounting bracket 42.
is provided so as to protrude toward the car door 15 side.

Here, the engagement plate 43 is connected to the friction plates 34 and 3 of the engagement device 27.
5 and close to the friction plate 35 side.

Next, the operation of the embodiment configured as above will be explained. While the car 1 is running, the friction plates 34 and 35 of the engagement device 27 provided on the car 1 do not come into contact with the engagement plate 43 provided on the door panel 41 of the landing. Car 1 can pass without any problem. However,
When car 1 reaches the destination floor, the car drive motor 16 is activated by an opening command from a control device (not shown).
Rotate the drive lever 19 counterclockwise and connect the connecting rod 21.
The door link 21 is rotated counterclockwise via. Due to this rotation of the door link 21, the door driving errand link 2
3 rotates clockwise while the car door 1 is rotated through the shaft 26.
Move 5 to the right. Further, when the door driving errand link 23 rotates, the cam 28 of the engagement device 27 rotates in the same direction to push out the cam follower 30, and the engagement lever 31
Rotate counterclockwise. As a result, the engagement device 27
The friction plate 34 moves to the engagement plate 43 side of the landing door 41,
The engagement plate 43 is sandwiched in cooperation with the friction plate 35. Therefore, when the car door 15 is opened, the passenger holds the hall door 41 while opening it. Further, when a predetermined period of time has elapsed after the car door 15 is fully opened, the car drive motor 16 is activated in the reverse direction, and the car door 15 opens while grasping the hall door 41. However, the landing door 41 is guided by the door rail 39 to open and close, and movement in the vertical direction is restricted. Other car door 1
The landing door 41 also opens and closes in the same manner. Therefore, the car 1 is integrated with the landing door 41 whose opening/closing and vertical movement of the car door 15 is regulated, and the vertical vibration generated by the rope when the car 1 lands on the floor and the vertical vibration generated when the user gets on and off the car 1. It is possible to suppress the vibration as shown by the solid line in FIG.

In addition, although the friction body is provided on the car door side in the above description, the same effect can be obtained even if it is provided on the engagement plate 43 on the hall door side.

[Effects of the Invention] As explained above, according to the present invention, the car door is provided with an engagement device that grips the engagement member of the landing door with a member having a large coefficient of friction during the opening and closing operations. , the vertical vibration generated by the rope when the car lands on the floor can be suppressed via the landing side structure, and the configuration is simple, eliminating the need for conventional power supplies, control devices, and associated wiring equipment. It is possible to provide an elevator that operates reliably and is easy to maintain and inspect.

[Brief explanation of the drawing]

FIG. 1 is a front view showing essential parts of an embodiment of the present invention, and FIG.
The figure is an enlarged view of the "A" part in Figure 1, Figure 3 is a front view showing the main parts of an embodiment of the present invention that is different from Figure 1, and Figure 4 is a side view showing the main parts of a conventional elevator. , FIG. 5 is a top view of FIG. 4, FIG. 6 is a diagram showing temporal changes in vertical vibration of the elevator car in the conventional elevator car and an embodiment of the present invention, and FIG. 7 is a diagram showing the vertical vibration of the elevator car in the conventional elevator. It is a front view showing a guide device. 1... Car 5... Rope 15... Car door 16... Car drive motor 21...
Door link 23...Small ring for door drive 27.
...Engagement device 28...Cam 30...Cam follower 34.35...Friction plate 38...Frame body
39... Rail 41... Landing door
43... Engagement plate (8733) Agent Patent attorney Yoshiaki Inomata (and 1 other person) Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] In an elevator that is suspended from a rope and moves up and down a hoistway, and is provided with a car door that opens and closes at an entrance and exit, and a landing door that is provided with a landing door that opens and closes via the car door,
An elevator characterized in that an engagement device is provided for gripping the car door and the landing door through a member having a large friction coefficient during opening and closing operations.